УСТРОЙСТВО ДЛЯ БИОЛОГИЧЕСКИХ НАБЛЮДЕНИЙ

Изобретение относится к медицинской технике, а именно к устройствам для наблюдения биологических объектов. Устройство содержит осветительную секцию и секцию управления обработкой сигналов, которая управляет операциями секции съемки изображения и выдает снятый сигнал изображения в устройство отображения, фотоэлектрически преобразует свет, отраженный от живого организма, на основании облучающего света и формирует снятый сигнал изображения. Устройство также содержит секцию вычисления, которая формирует спектральный сигнал, соответствующий оптическому изображению в узкой полосе длин волн, исходя из снятого сигнала изображения, посредством обработки сигналов, секцию регулировки цвета, которая, при выдаче спектрального сигнала в устройство отображения, регулирует отличающийся цветовой тон для каждой из множества полос, формирующих спектральный сигнал, и секцию коррекции качества изображения, которая корректирует качество изображения в сигнале, подлежащем выдаче в устройство отображения. Для первого ...

УСТРОЙСТВО ДЛЯ БИОЛОГИЧЕСКИХ НАБЛЮДЕНИЙ

... 1. Устройство для наблюдения биологических объектов, содержащее: ! осветительную секцию, которая излучает свет на живой организм, который является объектом, подлежащим исследованию; ! секцию съемки изображения, которая фотоэлектрически преобразует свет, отраженный от живого организма, на основании излучаемого света и формирует снятый сигнал изображения; и ! секцию управления обработкой сигналов, которая управляет операциями осветительной секции и/или секции съемки изображения и выдает снятый сигнал изображения в устройство отображения, при этом секция управления обработкой сигналов содержит: ! секцию формирования спектрального сигнала, которая формирует спектральный сигнал, соответствующий оптическому изображению в узкой полосе длин волн, исходя из снятого сигнала изображения, посредством обработки сигналов; ! секцию регулировки цвета, которая при выдаче спектрального сигнала в устройство отображения назначает отличающийся цветовой тон для каждой из множества полос, формирующих спектральный ...

ДАТЧИК ЦВЕТА С ВЫСОКИМ СПЕКТРАЛЬНЫМ РАЗРЕШЕНИЕМ, ИСПОЛЬЗУЮЩИЙ НЕРАССЕИВАЮЩИЕ ЭЛЕМЕНТЫ

... 1. Датчик (1) света, содержащий- компоновку (11) фильтров, причем компоновка (11) фильтров содержит множество спектральных фильтров (F, F, ..., F) для фильтрации падающего света (L), в которой каждый спектральный фильтр (F, F, ..., F) реализован с возможностью пропуска отдельной составляющей падающего света (L);- компоновку (12) апертур, содержащую множество апертур для впускания части падающего света (L);- компоновку (13) датчика, реализованную с возможностью сбора впущенного отфильтрованного света (L'), причем компоновка (13) датчика содержит матрицу чувствительных элементов (130) для генерации относящихся к изображению сигналов (S, S, S, ..., S), и причем чувствительная матрица подразделена на множество областей (R, R, ..., R), в которой каждая область (R, R, ..., R) чувствительной матрицы содержит множество чувствительных элементов и отведена для апертуры из упомянутого множества апертур и соответствующего спектрального фильтра (F, F, ..., F) из упомянутого множества фильтров так, что ...

Оптический фильтр, оптическая фильтровая система, спектрометр и способ изготовления оптического фильтра

Spektrometervorrichtung und ein entsprechendes Verfahren zum Betreiben einer Spektrometervorrichtung

Die Erfindung schafft eine Spektrometervorrichtung (10) mit zumindest einer Lichtquelle (11) zum Bestrahlen einer Probe (18) mit Licht, einer optischen Erfassungseinrichtung (12) zum Erfassen des von der Probe (18) gestreuten Lichts, mindestens einer optischen Filtereinrichtung (13), welche vor und/oder hinter der Probe (18) angeordnet ist, einer Kontaktsensoreinrichtung (15,16) zum Ermitteln eines Kontakts (19) zwischen der Probe und der Spektrometervorrichtung (10) und zum Ausgeben eines entsprechenden Ausgangssignals, einer Steuereinrichtung (17) zum Steuern der Lichtquelle (11) und der Erfassungseinrichtung (12) ansprechend auf das Ausgangssignal, wobei die Steuereinrichtung (17) derart gestaltet ist, dass sie zumindest einen Betriebsparameter der Lichtquelle (11) und der Erfassungseinrichtung (12) ändert, wenn das Ausgangssignal den Kontakt (19) zwischen der Probe und der Spektrometervorrichtung (10) anzeigt. Die Erfindung schafft außerdem ein Verfahren zum Betreiben einer Spektrometervorrichtung ...

Interferometereinrichtung und Verfahren zum Herstellen einer Interferometereinrichtung

Die vorliegende Erfindung schafft eine Interferometereinrichtung (10) umfassend eine Interferometereinheit (1) mit einem Basissubstrat (2), einer Fabry-Perot-Einheit (FPI), und mit einer Detektoreinrichtung (3), und einem Gehäuse (G) welches eine Bodenplatte (BP) und eine Deckelstruktur (4) umfasst, wobei die Deckelstruktur (4) auf der Bodenplatte (BP) angeordnet ist und eine zweite Kavität (K2) zwischen Deckelstruktur (4) und Bodenplatte (BP) einschließt, wobei die Bodenplatte (BP) oder die Deckelstruktur (4) eine Öffnung (5) umfasst, welche von Seitenwänden (5a) umgeben ist, die sich zu einer Oberfläche der Bodenplatte (BP) oder der Deckelstruktur (4) senkrecht erstrecken; und wobei die Interferometereinheit (1) in der zweiten Kavität (K2) und in einer Lichteinfallsrichtung (L) durch die Öffnung (5) angeordnet ist, so dass die Interferometereinheit (1) mit der Fabry-Perot-Einheit (FPI) der Öffnung (5) zugewandt ist.

MULTIPLE WAVELENGTH SPECTROMETER

Multi-spectral imaging

In-situ infra-red & ultra-violet photometer

A photometer 30 for analysing the composition of a sample gas. The photometer comprises an infra-red (IR) source 20 which directs a first plurality of IR pulses through the gas sample to an IR detector 26. At least two of the pulses may be of different wavelengths. The photometer further comprises an ultraviolet (UV) source 32 configured to send a second plurality of pulses of UV radiation for conveyance to a UV detector 36. At least two of the pulses may be of different wavelengths. A path selection arrangement is configured to selectively convey different UV pulses to either the sample gas or UV detector. Processing circuitry selects the wavelength of a given UV pulse, receives detection signals from the two detectors, and determines the concentration of components in the gas sample. The path selection arrangement may include a rotating member with inner and outer annular slots and may comprise a filter wheel 22. The path selection member may comprise light paths, which may be light guides ...

Color measurement engine with uv filtered illumination

A color measurement instrument includes a housing and illuminators, a two-dimensional photodetector array, and an optics system within the housing. A UV filter wheel closes the housing to prevent contaminants from entering the housing. The filter wheel supports UV filters and non-UV glass that can be selectively aligned with the illuminators. The photodetectors can be read in parallel, and each photodetector includes a unique spectral filter. The optics system delivers light from the sample target area equally to each of the photodetectors.

Manufacturing process for integrated computational elements

Analyte Detection apparatus and method of detecting an analyte

An analyte detection apparatus comprises a radiation source (8, fig 2) for irradiating a sample such as the skin (11, fig 2); and a receiver 10, to receive an optical Raman spectrum of radiation transmitted back from the sample (11, fig 2) in response to the received radiation from the source (8, fig 2). The receiver 10 comprises a plurality of different types of analysis device 181-4 each arranged to receive a selected part of the received optical spectrum transmitted back from the sample (11, fig 2). There may be filtration elements 141-4 to split the energy in dependence on frequency or wavelength and direct selected parts of the spectrum 161-4 to the desired analysis device 18, such that more data may be derived from the most important parts of the spectrum. The analysis devices 18 may include CCD-based and CMOS-based spectrometers, and may have different levels of resolution or signal-to-noise ratio. The apparatus may be used to determine the concentration of an analyte in the blood ...

Color Measurement engine with parallel detectors

SPECTROMETER WITH SWIVELLING FLEXIBLE FILTER

Methods for optically determining a characteristic of a substance

Optical computing devices are disclosed. One exemplary optical computing device (300) includes an electromagnetic radiation source (308) configured to optically interact with a sample (306) and at least two integrated computational elements (302, 304). The at least two integrated computational elements are configured to produce optically interacted light (314) and further configured to be associated with a characteristic of the sample. The optical computing device further includes a first detector (316) arranged to receive the optically interacted light from the at least two integrated computational elements and thereby generate a first signal corresponding to the characteristic of the sample.

Handheld characteristic analyzer

Disclosed is a portable handheld characteristic analyzer (300) used to analyze chemical compositions in or near real-time. The analyzer (300) may include a portable housing (304), at least one optical computing device (312) arranged within the portable housing (304) for monitoring a sample (310), the at least one optical computing device (312) having at least one integrated computational element configured to optically interact with the sample (310) and thereby generate optically interacted light, at least one detector (212, 216; 420) arranged to receive the optically interacted light and generate an output signal corresponding to a characteristic of the sample (310), and a signal processor (314) communicably coupled to the at least one detector (212, 216; 420) for receiving the output signal, the signal processor (314) being configured to determine the characteristic of the sample (310) and provide a resulting output signal indicative of the characteristic of the sample (310).

Systems and methods for monitoring the quality of a fluid

Systems and methods for monitoring a fluid having one or more adulterants therein. One method of monitoring the fluid includes containing the fluid within a flow path, the fluid including at least one adulterant present therein, optically interacting at least one integrated computational element with the fluid, thereby generating optically interacted light, receiving with at least one detector the optically interacted light, and generating with the at least one detector an output signal corresponding to a characteristic of the at least one adulterant in the fluid.

Systems and methods for producing objects incorporating selectably active electromagnetic energy filtering layers

A system and method are provided for forming energy filters layers or shutter components, including energy/light directing/scattering layers that are actively electrically switchable. The energy filters or shutter components are operable between at least a first mode in which the layers, and thus the presentation of the shutter components, appear substantially transparent when viewed from an energy/light incident side, and a second mode in which the layers, and thus the presentation of the energy filters or shutter components, appear opaque to the incident energy impinging on the energy incident side. The differing modes are selectable by electrically energizing, differentially energizing and/or de-energizing electric fields in a vicinity of the energy scattering layers, including electric fields generated between a pair of transparent electrodes sandwiching an energy scattering layer. Refractive indices of transparent particles, and the transparent matrices in which the particles are fixed ...

Optical devices and systems using them

Certain examples described herein are directed to optical devices and systems that include first and second optical elements. In some examples, the first optical element may be configured to pass light received from an excitation source, and the second optical element may be optically coupled to the first optical element and may be configured to reflect incident light from the first optical element back to the first optical element and configured to pass the light reflected from the first optical element. Methods using the devices and systems are also described.

Systems and methods for producing scattering selected wavelengths of electromagnetic energy

A system and method are provided for forming electromagnetic energy transmissive layers, which are particularly configured to selectively scatter specific and selectable wavelengths of electromagnetic energy, while allowing remaining wavelengths to pass therethrough. Processes are provided by which to form, or otherwise incorporate, one or more energy scattering layers, including uniquely implementing optical light scattering techniques in such energy scattering layers, and to objects, object portions, wall plates, lenses, filters, screens and the like that are formed of, or that otherwise incorporate, such transmissive energy-scattering layers. Refractive indices of particles fixed in a matrix are tunable in order that the finished layers provide an opaque appearance when viewed from an energy- incident excited by light in the visible spectrum. A color, pattern, texture or image of the scattering layer may be rendered according to an individual user's desires, the layers being substantially-transparent ...

Optical filtering device for detecting gas

The invention relates to an optical filtering device (10), in particular for detecting gas remotely, comprising a member (22, 24, 26) including a tubular passage housing a plurality of reflecting structures (34a, 34b, 34c, 34d) that are able to reflect infrared wavelengths, said structures (34a, 34b, 34c, 34d) being elongate along the axis of the tubular passage and placed about this axis. According to the invention, the reflective structures (34a, 34b, 34c, 34d) comprise means for filtering by absorption different wavelength bands located in the infrared spectral band.

OPTICAL COLOUR-SPLITTER ARRANGEMENT

COMPACT OPTICAL WAVELENGTH DISCRIMINATOR RADIOMETER

A wavelength discriminator designed to collect broadband, multiple wavelength input energy, to isolate specific narrow bands of interest, and to image such narrow bands of interest upon closely spaced, separate detectors. This discriminator comprises optical devices (22, 18) for directing incoming radiant energy of a certain quality and involving a wide range of wavelengths through first (26a) and second (26b) wavelength selective reflectors separated by a medium that transmits the wavelengths of interest. The wavelength selective reflectors in accordance with this invention are in a non-parallel configuration and disposed in a double pass geometrical arrangement wherein energy of a certain wavelength reflected from the second wavelength 9 elective reflector (26b) passes back through the first wavelength selective reflector (26a), with the energy from the first and second wavelength reflectors thereafter being directed onto respective detectors (32a and 32b). An embodiment involving a third ...

BIOLOGICAL OBSERVATION APPARATUS

A biometric instrument comprises an illuminating unit for illuminating an organism, i.e., a subject, an imaging unit for photoelectrically converting the light of the illuminating light reflected from the organism and generating an imaging signal, and a signal processing control unit for controlling the operation of the imaging section and outputting the imaging signal to a display. The biometric instrument is characterized in that the signal processing control unit includes a spectral signal generating section for generating a spectral signal corresponding to an image in an optical wavelength narrow band from the imaging signal by signal processing, a color adjusting section for assigning color tones different with the bands where the spectral signal is formed when the spectral signal is outputted to the display, and an image quality adjusting section for adjusting the image quality of the signal outputted to the display, or the other signal processing sections than at least the spectral ...

OPTICAL FILTERS

An optical filter may include a monolithic substrate. The optical filter may include a first component filter disposed onto a first region of the monolithic substrate. The first component filter may be a near infrared (NIR) bandpass filter. The optical filter may include a second component filter disposed onto a second region of the monolithic substrate. The second component filter may include a red-green-blue (RGB) bandpass filter. A separation between the first component filter and the second component filter may be less than approximately 50 micrometers (µm).

OPTICAL MEASUREMENT METHOD AND SYSTEM

An optical measurement method and system. The system includes, and method applies, a light source, a beamsplitter, at least one filter, a output photodetector for acquiring data of a sample, and a correction photodetector for correcting and maintaining output intensity from the light source. The filter is located between the light source and the correction photodetector for normalizing the spectrum of the input light being applied to input light correction. The filter may be incorporated into the beamsplitter and may be tuned to filter light from the light source for providing non-zero transmission of light with a near-zero gradient for wavelengths in a portion of the spectrum of the input light being applied to the sample and read by the output photodetector. The filter may also or alternatively be located downstream of the beamsplitter to correct for wavelength sensitivity of the correction photodetector.

MICRO-STRUCTURED SPECTRAL FILTER AND IMAGE SENSOR

The invention relates to a spectral filter (100) comprising at least one metal layer (101) structured by a grating of traversing slots (102a to 102e, 103a to 103h). The grating consists of at least two subgratings of traversing slots (102a to 102e, 103a to 103h) intercepting one another perpendicularly.

COMPACT LIGHT SENSOR

Provided are methods and systems for concurrent imaging at multiple wavelengths. In one aspect, a hyperspectral/multispectral imaging device includes a lens configured to receive light backscattered by an object, a plurality of photo-sensors, a plurality of bandpass filters covering respective photo-sensors, where each bandpass filter is configured to allow a different respective spectral band to pass through the filter, and a plurality of beam splitters in optical communication with the lens and the photo-sensors, where each beam splitter splits the light received by the lens into a plurality of optical paths, each path configured to direct light to a corresponding photo-sensor through the bandpass filter corresponding to the respective photo-sensor.

OPTICAL COMPUTATION FLUID ANALYSIS SYSTEM AND METHOD

Methods and apparatus for determining at least one property of fluids related to oilfield operations may include an optical calculation device for measuring light having interacted with the fluid (e.g., flowing fluids and flames). The flame may be fueled, at least in part, by the stream of fluid from the subsurface well. Methods may include directing interacted light that comprises light having passed through a fluid relating to an oilfield operation to an iris; performing a regression calculation on the interacted light with an optical calculation device responsive to the interacted light incident thereon to produce at least one output light signal; and determining at least one property of the fluid from the at least one output light signal.

Spectrometer with Monochromator and Order-sorting-filter.

Ein erfindungsgemässes Spektrometer (1) umfasst eine Lichtquelle (2), einen Monochromator (3) mit mindestens einem Beugungsgitter (4), ein Monochromator-Gehäuse (5) und eine Steuerung (6). Das Spektrometer (1) umfasst zudem einen Order-Sorting-Filter (7), der dem Beugungsgitter (4) des Monochromators (3) vorgeschaltet oder nachgeschaltet ist, wobei der Order-Sorting-Filter (7) und das Beugungsgitter (4) des Monochromators (3) je einen Antrieb (4´, 7´) umfassen, die mit der Steuerung (6) wirkverbunden sind, so dass der Order-Sorting-Filter (7) und das Beugungsgitter (4) des Monochromators (3) kontinuierlich und synchron zueinander beweglich sind. Der Order-Sorting-Filter (7) umfasst ein Substrat (23), eine erste optische Dünnschicht (24) und eine zweite optische Dünnschicht (25), wobei die erste optische Dünnschicht (24) auf einer ersten Oberfläche und die zweite optische Dünnschicht (25) auf einer zweiten Oberfläche des Substrats (23) angeordnet sind. In einem Raster-Verfahren zum Erfassen ...

Infrared filter disk fur passive infrared penetration detectors.

The optical field imaging system, and method of adjusting all-optical imaging system

SPECTRAL SEPARATION COMPONENT WITHOUT APPARENT STRAY IMAGE

OBSERVATION INSTRUMENT HAVING A STATIC INTERFEROMETRIC HOPPED ON DIFFERENCES

Optical system for multi-channel fluorescence measurement of microfluidic chip and multi-channel fluorescence sample analyzer

SOLID-STATE IMAGING ELEMENT AND IMAGING SYSTEM

Wafer inspection method and wafer

A wafer comprises a substrate layer, a first mirror layer having a plurality of two-dimensionally arranged first mirror parts, and a second mirror layer having a plurality of two-dimensionally arranged second mirror parts. A gap is formed between the first mirror parts and the second mirror parts to thereby constitute a plurality of Fabry-Perot interference filter parts. A wafer inspection method according to an embodiment includes a step of determining the quality of each of the plurality of Fabry-Perot interference filter parts, and a step of applying ink to at least a part of the portion of the second mirror layer in the Fabry-Perot interference filter part determined to be defective that overlaps the gap as seen from the direction opposite the second mirror layer.

Spectral gradient filter production using surface applied array optimized 3D shadow masks

A method of producing spectral gradient filters using surface applied array optimized 3D shadow masks by placing the shadow mask on the surface of the wafer substrate using a technique such as 3D printing, and by also using spatial algorithms to shape each mask aperture individually is disclosed.

SENSOR UTILIZING BAND PASS FILTERS

The invention relates to a sensor having a filter arrangement, downstream of which there is arranged a detector arrangement, and an evaluating device which is connected to the detector arrangement, the filter arrangement has at least a first filter, the suspect filter, which is configured as a band pass filter allowing the passage of a first predetermined band, the suspect band (58), at least one second filter, the reference filter(s), which is configured as a band pass filter allowing the passage of a second predetermined band(s), the reference band(s) (RBl and RB2), and where the detector arrangement has at least one detector associated with at least one of the filters. The band passes reference filters are distributed above and below the band pass of the suspect filter. The sensor with advantage could be utilized within the IR band, and could advantageously be used to detect CO.

FILTER ASSEMBLY AND METHOD OF FILTERING ELECTROMAGNETIC RADIATION

A filter assembly and a method for filtering electromagnetic radiation are provided. The filter assembly includes a dielectric layer having a first side and a second side. The filter assembly further includes a first conductive layer disposed on the first side of the dielectric layer. The filter assembly further includes a second conductive layer disposed on the second side of the dielectric layer. The filter assembly further includes a voltage source electrically coupled to the first and second conductive layers. The voltage source is configured to generate a first voltage signal that adjusts a dielectric constant value of the dielectric layer to a first desired dielectric constant value to filter electromagnetic radiation impinging on the first conductive layer. The voltage source is further configured to generate a second voltage signal that adjusts the dielectric constant value of the dielectric layer to a second desired dielectric constant value to filter electromagnetic radiation ...

SPECTRA SHAPING SCHEME FOR CHIRPED PLUSE AMPLICATION

A spectra shaping scheme for chirped pulse amplification (CPA), uses a CTSI spectral decomposition system (6, 2, 3, 4, 10), a CTSI spectral synthesizing system (4′, 3′, 2′, 6′), and a spectral modulating system (10, 5), wherein the CTSI spectral decomposition system (6, 2, 3, 4, 10) and CTSI spectral synthesizing system (4′, 3′, 2′, 6′) are symmetrical to each other. The scheme includes the following steps: totally and truly expanding the laser chirped pulse to the spectral plane by the CTSI spectral decomposition system (6, 2, 3, 4, 10), performing the spectral modulation on the image plane by the spectral modulating system (10, 5), and reverting the modulated spectra into the chirped pulse without distortion by the CTSI spectral synthesizing system (4′, 3′, 2′, 6′), thereby realizing the spectra shaping.

SYSTEM AND METHOD FOR HIGH RESOLUTION, INSTANTANEOUS WIDE DYNAMIC RANGE, MULTI-COLOUR LUMINESCENCE DETECTION OF BIOLOGICAL SAMPLES IN A MICROFLUIDIC SYSTEM

The invention provides a high resolution, wide dynamic range, multi-colour detection platform for microfluidic analysers/instruments and methods. The detection platform uses multiple high gain semiconductor optical sensors for the detection of luminescence from cellular or biological samples. The digitized outputs from these sensors are combined and weighted in a signal processing unit, using pre-determined algorithms for each colour, which optimise the resolution in each of these high gain semiconductor optical sensors while extending the dynamic range of the detection platform.

SYSTEM AND METHODS FOR USE IN DETECTING HARMFUL AEROSOL PARTICLES

A multi-spectral aerosol particle measurement system (100) including a long wavelength (e g, UV light, 340 nm) emitter (102) and a short wavelength (e g, UV light, 280 nm) emitter (108), an emitter reflector (114) such as a dichroic filter, that is transparent to long wavelength radiation (104) and reflective to short wavelength radiation (110), a flowing fluid (116) that contains particles (118) that may intersect first direction (106) such that they are sequentially exposed, producing elastic and inelastic emission wavelengths, including fluorescence, a collimating lens (122), and a detector reflector (124) to reflect short wavelength radiation and pass fluorescent radiation through one of a plurality of filters (126a-d) placed in the optical path of a detector (128) The detector reflector (124) reflects light having a wavelength shorter than 300 nm, so elastic scatter is detected by the light scatter detector (190).

METHODS FOR OPTICALLY DETERMINING A CHARACTERISTIC OF A SUBSTANCE

Optical computing devices are disclosed. One exemplary optical computing device (300) includes an electromagnetic radiation source (308) configured to optically interact with a sample (306) and at least two integrated computational elements (302, 304). The at least two integrated computational elements are configured to produce optically interacted light (314), and at least one of the at least two integrated computational elements is configured to be disassociated with a characteristic of the sample. The optical computing device further includes a first detector (316) arranged to receive the optically interacted light from the at least two integrated computational elements and thereby generate a first signal corresponding to the characteristic of the sample.

TUNABLE SPECTRAL IMAGING FILTER CONFIGURED FOR UV SPECTRAL RANGES

A wavelength bandpass filter for chemical imaging and similar uses is configured to minimize absorption in ultraviolet wavelengths and arranged in a Solc, Lyot or similar arrangement of stacked controllable birefringent cells. A number of tunable liquid crystal cells are placed successively in a stack along an optical path, each of the cells having an electrically tunable birefringent element, wherein the cells are dimensioned and arranged at respective angular orientations for passing a tuned bandpass wavelength. A polarizer is arranged at least at an output end for controlling a polarization orientation of light. The liquid crystal cells each comprise at least one supporting plate, an alignment layer and birefringent layer, and wherein the liquid crystal cells are at least 90% transmissive over a UV wavelength tuning range between 280 and 400ηm or larger.

Multispectral Imager

A multispectral imager includes processing circuitry, an illumination assembly, a detector assembly, and a focusing assembly. The illumination assembly includes an array of illumination elements controlled by the processing circuitry to illuminate a scene. The detector assembly includes a detector array controlled by the processing circuitry to capture images from the scene at different wavelengths. The focusing assembly includes a lens and is controlled by the processing circuitry to adjust a focal point for the detector array. The processing circuitry generates and processes the images from the scene, taken at different wavelengths and focal points, combines the images to form a multispectral image cube for the scene, and determines a composition of an object within the scene based on a spectral profile of the multispectral image cube.

CHEMICAL IMAGING FIBERSCOPE

A fiberscope device is disclosed which is suitable for video imaging, laser Raman spectroscopy and laser Raman spectroscopic (i.e. chemical) imaging. The fiberscope design minimizes fiber background interference arising from the laser delivery fiber optic and the coherent fiber optic light gathering bundle while maintaining high light throughput efficiency through the use of integrated spectral filters. In the fiberscope design, the laser delivery fiber optic is offset from the coherent fiber optic light gathering bundle. The laser delivery field is captured entirely by the light gathering field of view of the coherent fiber bundle. The fiberscope incorporates spectral filter optical elements that provide environmental insensitivity, particularly to temperature and moisture. The fiberscope is suited to the analysis of a wide range of condensed phase materials (solids and liquids), including the analysis of biological materials such as breast tissue lesions and arterial plaques, in such ...

Spectrophotometer

A spectrophotometer including: a) a light source switching mechanism for switching a plurality of light sources by swinging a light source mirror; b) a filter selecting mechanism; c) a diffraction grating rotating mechanism; and d) a controller for determining the operation origins of the three driving mechanisms using a rough origin sensor provided for the diffraction grating rotating mechanism and a photometer. The operation of the controller is to: i) determine an origin of the movement of the filter by making an end of the filter frame to touch a stopper; ii) determine a rough origin of the diffraction grating using the rough origin sensor; and iii) determine an origin of the movement of the light source mirror and a precise origin of the movement of the diffraction grating by detecting the position at which the photometer detects the maximum intensity of light.

Optical filter including plates for filtering light and optical measuring device employing optical filter

Provided are an optical filter and an optical measuring device employing the optical filter. The optical filter comprises at least one pixel. The at least one pixel comprises a first reflective plate that is configured to receive the incident light and have a plurality of first holes formed therein; and a second reflective plate that is configured to transmit particular wavelength or range of wavelengths of the light transmitted through the first reflective plate, faces the first reflective plate with a gap between the first reflective plate and the second reflective plate, and has a plurality of second holes formed therein.

METHOD AND APPARATUS FOR DETERMINING INTENSITIES AND PEAK WAVELENGTHS OF LIGHT

The present invention provides a method and apparatus for determining intensities and peak wavelengths of light. The apparatus comprises one or more pairs of sensing units for sensing the light, a first sensing unit of a pair configured to sense a first intensity of the light in a first predetermined wavelength range with a first predetermined spectral responsivity and a second sensing unit of a pair configured to sense a second intensity of the light in the first predetermined wavelength range with a second predetermined spectral responsivity. The apparatus further comprises a processing system operatively connected to the one or more pairs of sensing units; the processing system configured to determine the intensity and peak wavelength for each of the one or more predetermined wavelength ranges of the light according to one or more predetermined functional relationships between each of the first intensity and second integral.

OPTICAL APPARATUS USING REFLECTION GEOMETRY

Provided is an optical apparatus using reflection geometry. The optical apparatus includes a lens element disposed to face an object to be measured, a light source generating an incident beam that passes through the lens element to be incident on the object, and a photodetector receiving light that is scattered by the object. The incident beam is obliquely incident on the object off an optical center axis of the lens element, without passing through the optical center axis. The scattered light is transmitted to the photodetector by passing through the optical center axis of the focusing lens element and a region therearound. 1. A reflective optical apparatus comprising:a lens element disposed to face an object to be measured;a light source configured to generate an incident beam that passes through the lens element to be incident on the object; anda photodetector configured to receive scattered light that is scattered by the object;wherein the incident beam is obliquely incident on the object off an optical center axis of the lens element, without passing through the optical center axis, andwherein the scattered light is transmitted to the photodetector by passing through the optical center axis of the lens element and a region around the optical center axis.2. The reflective optical apparatus of claim 1 , wherein a ray of the incident beam is incident on the object by passing through a first region of the lens element claim 1 , the first region being located between the optical center axis and an edge of the lens element claim 1 , without passing through the optical center axis of the lens element.3. The reflective optical apparatus of claim 2 , wherein the first region is closer to the edge of the lens element than to the optical center axis of the lens element.4. The reflective optical apparatus of claim 1 , wherein reflected light of the incident beam that is directly reflected by the object travels off the optical center axis claim 1 , without passing through ...

System for outputting a spectrum of light of a scene having optical detectors to receive light of different spectral transmittance from respective filters

Technologies pertaining to a compressive sensing snapshot spectrometer are described herein. Light is focused through an array of filters onto an array of optical detectors by way of an optical objective. Each detector in the array receives light from a single respective filter in the filters. Each filter in the filters has a spectral transmittance function that overlaps a spectral transmittance function of at least one other filter. A compressive sensing algorithm is executed over outputs of the detectors based upon the known spectral transmittance functions of the filters. Based upon the execution of the compressive sensing algorithm, intensity values of the light are identified for a number of spectral bins that is greater than a number of detectors in the array.

Signal processing device for biological observation apparatus

Tissue information of a desired deep portion of a biological tissue based on a spectral image obtained from signal processing is adjusted to image information in a color tone suitable for observation. Outputs of a matrix computing section 436 are respectively connected to integrating sections 438a to 438c, and after integrating computation is performed for them, color conversion computation is performed for respective spectral image signals F1 to F3 in a color adjusting section 440, spectral color channel image signals Rch, Gch and Bch are created from the spectral image signals F1 to F3, and images of the spectral color channel images Rch, Gch and Bch are sent to a display monitor 106 via a switching section 439.

SYSTEMS AND METHODS FOR IMPLEMENTING SELECTIVE ELECTROMAGNETIC ENERGY FILTERING OBJECTS AND COATINGS USING SELECTABLY TRANSMISSIVE ENERGY SCATTERING LAYERS

A system and method are provided for forming energy filter layers or shutter components, including energy scattering layers that are actively electrically switchable. The energy filters or shutter components are operable between at least a first mode in which the layers, and thus the presentation of the shutter components, appear substantially transparent when viewed from an energy/light incident side, and a second mode in which the layers, and thus the presentation of the energy filters or shutter components, appear opaque to the incident energy impinging on the energy incident side. The differing modes are selectable by electrically energizing, differentially energizing and/or de-energizing electric fields in a vicinity of the energy scattering layers. Refractive indices of transparent particles, and the transparent matrices in which the particles are fixed, are tunable according to the applied electric fields. The energy scattering layers may conceal a sensor such as a camera or photovoltaic ...

PULSED ILLUMINATION IN A HYPERSPECTRAL, FLUORESCENCE, AND LASER MAPPING IMAGING SYSTEM

Pulsed hyperspectral, fluorescence, and laser mapping imaging in a light deficient environment is disclosed. A system includes an emitter for emitting pulses of electromagnetic radiation and an image sensor comprising a pixel array for sensing reflected electromagnetic radiation. The system includes a controller configured to synchronize timing of the emitter and the image sensor. The system is such that at least a portion of the pulses of electromagnetic radiation emitted by the emitter comprises one or more of a hyperspectral emission, a fluorescence emission, or a laser mapping pattern.

Thin-film filter based hyperspectral imager spanning an octave of long wavelength infrared regime

A hyperspectral imager (HSI) includes a first thin film filter, the first thin film filter including a first quarter wave mirror, a second quarter wave mirror, and a low-refractive-index wedge between the first quarter wave mirror and the second quarter wave mirror. The low-refractive-index wedge has a height dimension such that a distance between the first quarter wave mirror and the second quarter wave mirror increases linearly along a length of the low-refractive-index wedge.

Producing Filters with Combined Transmission and/or Reflection Functions

A transmissive and/or reflective optical filter can receive input light, which can emanate from objects traveling along paths past the filter, e.g. from biological cells, viruses, colored spots or other markings on documents, and so forth. In response, the filter can provide output light in accordance with a combined transmission function that is approximately equal to a superposition or scaled superposition of a set of simpler transmission functions. The set can include two or more non-uniform transmission functions, a subset of which can be different from each other and positioned relative to each other so that the output light has time variation in accordance with each of the functions in the subset. The subset could include, for example, a random function and a periodic function, a chirp function and a periodic function, or any other suitable combination of two or more simpler functions.

AN INTEGRATED CYTOMETRIC SENSOR SYSTEM AND METHOD

HYPERSPECTRAL ELEMENT, HYPERSPECTRAL SENSOR INCLUDING THE SAME, AND HYPERSPECTRAL IMAGE GENERATING APPARATUS

A hyperspectral element includes (1) a multi filter including: a first sub filter through which first wavelength light having a first wavelength passes; and a second sub filter through which second wavelength light having a second wavelength passes, the second wavelength being different from the first wavelength; and (2) a multi detector configured to detect the first wavelength light and the second wavelength light, wherein the first sub filter and the second sub filter may be arranged in series in an optical path of incident light which is incident onto the multi filter.

МНОГОКАНАЛЬНЫЙ ДАТЧИК ПЫЛИ

УСТРОЙСТВО ДЛЯ НАБЛЮДЕНИЯ БИОЛОГИЧЕСКИХ ОБЪЕКТОВ

... 1. Устройство для наблюдения биологических объектов, содержащее: ! секцию формирования цветового сигнала изображения, которая выполняет обработку сигналов либо над первым снятым сигналом изображения, для которого объект, подлежащий исследованию, подсвечиваемый белым подсвечивающим светом, снимают первым устройством съемки изображения, снабженным цветным светофильтром, обладающим характеристикой пропускания множества длин волн в широком диапазоне, либо над вторым снятым сигналом изображения, для которого объект, подлежащий исследованию, подсвечиваемый множеством взаимно отличающихся подсвечивающих световых потоков с чередованием кадров в широком диапазоне длин волн, который охватывает видимый диапазон спектра, снимают вторым устройством съемки изображения, и формирует цветовой сигнал изображения для отображения в виде цветного изображения на устройстве отображения; ! секцию формирования спектрального сигнала изображения, которая формирует, исходя из первого снятого сигнала изображения или ...

ТВЕРДОТЕЛЬНЫЙ ДАТЧИК ИЗОБРАЖЕНИЯ И СИСТЕМА ФОРМИРОВАНИЯ ИЗОБРАЖЕНИЯ

... 1. Твердотельный датчик изображения, содержащий:двухмерную матрицу пикселей, в которой пиксели, каждый из которых включает в себя устройство фотоэлектрического преобразования, размещены в виде матрицы; имножество типов фильтров, размещенных перед пиксельной областью двухмерной матрицы пикселей, причем каждый из фильтров включает в себя спектральную функцию и периодическую тонкую структуру, более короткую, чем подлежащая обнаружению длина волны,при этом каждый из фильтров образует блок, размеры которого превышают размеры устройства фотоэлектрического преобразования каждого пикселя в двухмерной матрице пикселей, причем один тип фильтра размещен для множества соседних групп устройств фотоэлектрического преобразования,множество типов фильтров размещено для соседних групп блоков с образованием гребенки фильтров,гребенки фильтров размещены в блоке размером N×M, где N и М - целые числа, большие или равные единице, перед пиксельной областью двухмерного массива пикселей.2. Твердотельный датчик изображения ...

Verfahren und Vorrichtung zur Raman-Spektroskopie

Verfahren zur Aufnahme eines Raman-Spektrums, folgende Verfahrensschritte umfassend:- Einstrahlen von Anregungsstrahlung (12, R1,R2) auf eine zu untersuchende Probe (20), wobei die zu untersuchende Probe (20) mindestens mit einer ersten Anregungsstrahlung (R1) einer ersten Anregungswellenlänge (λ1) und einer zweiten Anregungsstrahlung (R2) einer zweiten Anregungswellenlänge (λ2) bestrahlt wird, wobei sich mindestens die erste Anregungswellenlänge (λ1) von der zweiten Anregungswellenlänge (λ2) unterscheidet,- wellenlängenselektive Filterung der von der Probe (20) gestreuten ersten Anregungsstrahlung (R1') mittels eines passiven Filterelements (30), wobei sich eine transmittierte Filterwellenlänge (λF) des Filterelements (30) von mindestens der ersten Anregungswellenlänge (λ1) und der zweiten Anregungswellenlänge (λ2) unterscheidet, und wobei durch einen der Filterwellenlänge (λF) zugeordneten Einkanaldetektor (40) aus der von der Probe (20) gestreuten und gefilterten ersten Anregungsstrahlung ...

Lase scanning microscope

A device for coupling a short pulse laser into a microscope includes a dispersion element 1 for spatially separating the spectral components of the laser beam. Following dispersion the laser beam is manipulated by a spatial light modulator (SLM) 2 and then passed through a second dispersion element 3 to cancel the spatial separation. The SLM is preferably a nematic liquid crystal device and can adjust the transmission or phase shift of a spectral component. Each of the dispersion elements 1, 3 may be a prism or grating and has an associated lens L1, L2 to create a Fourier plane.

An optical testing system

OPTICAL BANDPASS FILTER

... 1454800 Monchromators NORTHROP CORP 13 Aug 1974 [13 Aug 1973] 35592/74 Heading G2J Apparatus for removing selected lines from a collimater input beam comprises a prism P-1 for dispersing the beam, a prism P-2 for collimating the beam to a wider spread than the input beam, stop means S to intercept and thereby remove selected lines a prism P-3 to bring the remaining lines to the same separation as the beam imping- ing on the prism P-2 and a prism P-4 for collimating the beam as on output beam collinear with the input beam. Prisms P-1, P-4 and P-2, P-3 are matched optical pairs. The stop means may be a single or a plurality of apertures or a rotating slitted disc. The rotation of the latter maybe synchronized with detector means placed to receive the output beam to thereby form a scanning spectrophotometer.

Biometric instrument

Biometric instrument

Container holder reflectance flag

Systems and methods for producing objects incorporating selectably active electromagnetic energy filtering layers

A system and method are provided for forming energy filters layers or shutter components, including energy/light directing/scattering layers that are actively electrically switchable. The energy filters or shutter components are operable between at least a first mode in which the layers, and thus the presentation of the shutter components, appear substantially transparent when viewed from an energy/light incident side, and a second mode in which the layers, and thus the presentation of the energy filters or shutter components, appear opaque to the incident energy impinging on the energy incident side. The differing modes are selectable by electrically energizing, differentially energizing and/or de-energizing electric fields in a vicinity of the energy scattering layers, including electric fields generated between a pair of transparent electrodes sandwiching an energy scattering layer. Refractive indices of transparent particles, and the transparent matrices in which the particles are fixed ...

Compact light sensor

Provided are methods and systems for concurrent imaging at multiple wavelengths. In one aspect, a hyperspectral/multispectral imaging device includes a lens configured to receive light backscattered by an object, a plurality of photo-sensors, a plurality of bandpass filters covering respective photo-sensors, where each bandpass filter is configured to allow a different respective spectral band to pass through the filter, and a plurality of beam splitters in optical communication with the lens and the photo-sensors, where each beam splitter splits the light received by the lens into a plurality of optical paths, each path configured to direct light to a corresponding photo-sensor through the bandpass filter corresponding to the respective photo-sensor.

SYSTEMS AND METHODS FOR PRODUCING SCATTERING SELECTED WAVELENGTHS OF ELECTROMAGNETIC ENERGY

A system and method are provided forforming electromagnetic energy transmissive layers, which are particularly configured to selectively scatter specific and selectable wavelengths of electromagnetic energy, while allowing remaining wavelengths to pass therethrough. Processes are provided by which to form, or otherwise incorporate, one or more energy scattering layers, including uniquely implementing optical light scattering techniques in such energy scattering layers, and to objects, object portions, wall plates, lenses, filters, screens and the like that are formed of, or that otherwise incorporate, such transmissive energy scattering layers. Refractive indices of particles fixed in a matrix are tunable in order that the finished layers provide an opaque appearance when viewed from an energy- incident excited by light in the visible spectrum. A color, pattern, texture or image of the scattering layer may be rendered according to an individual user's desires, the layers being substantially-transparent ...

OPTICAL FILTER AND SPECTROMETER

OPTICAL DEVICES AND SYSTEMS USING THEM

Certain examples described herein are directed to optical devices and systems that include first and second optical elements. In some examples, the first optical element may be configured to pass light received from an excitation source, and the second optical element may be optically coupled to the first optical element and may be configured to reflect incident light from the first optical element back to the first optical element and configured to pass the light reflected from the first optical element. Methods using the devices and systems are also described.

FILTER WHEEL SOURCE ASSEMBLY FOR DOWNHOLE SPECTROSCOPY

A downhole fluid analysis tool has a tool housing and a fluid analysis device. The tool housing is deployable downhole and has at least one flow passage for a fluid sample. The fluid analysis device is disposed in the tool housing relative to the flow passage. Inside the device, one or more sources generate a combined input electromagnetic signal across a spectrum of wavelengths, and a routing assembly routes generated signals into the reference and measurement signals. At least one wheel having a plurality of filters is rotated to selectively interpose one or more of the filters in the paths of the reference and measurement signals.

FLUORESCENCE FILTERING SYSTEM AND METHOD FOR MOLECULAR IMAGING

An optical system is disclosed that can be used for fluorescence filtering for molecular imaging. In one preferred embodiment, a source subsystem is disclosed comprising a light source and a first set of filters designed to pass wavelengths of light in an absorption band of a fluorescent material. A detector subsystem is also disclosed comprising a light detector, imaging optics, a second set of filters designed to pass wavelengths of light in an emission band of the fluorescent material, and an aperture located at a front focal plane of the imaging optics. A telecentric space is created between the light detector and the imaging optics, such that axial rays from a plurality of field points emerge from the imaging optics parallel to each other and perpendicular to the second set of filters ...

FILTER WHEEL SOURCE ASSEMBLY FOR DOWNHOLE SPECTROSCOPY

A downhole fluid analysis tool has a tool housing and a fluid analysis device. The tool housing is deployable downhole and has at least one flow passage for a fluid sample. The fluid analysis device is disposed in the tool housing relative to the flow passage. Inside the device, one or more sources generate a combined input electromagnetic signal across a spectrum of wavelengths, and a routing assembly routes generated signals into the reference and measurement signals. At least one wheel having a plurality of filters is rotated to selectively interpose one or more of the filters in the paths of the reference and measurement signals.

DIGITAL MULTI-SPECTRAL CAMERA SYSTEM HAVING AT LEAST TWO INDEPENDENT DIGITAL CAMERAS

The invention relates to a digital camera system (2) having at least two independent digital cameras (3.1-3.4), which capture irnage signals in different narrow-band spectral ranges, wherein each of the at least two independent digital cameras (3.1-3.4) comprises at least one separate two-dimensional digital image sensor (6), preferably a CCD sensor or a CMOS sensor, and at least one filter element (7.1-7.4) corresponding to the particular narrow-band spectral range connected upstream of the at least one two-dimensional digital image sensor (6) and having at least one filter region (7a.1-7a.4). The at least one colour filter element (7.1-7.4) additionally comprises at least one neutral region (7b), which is translucent in a spectral range that includes at least the different narrow-band spectral ranges of the at least two independent digital cameras (3.1-3.4), in particular in a panchromatic spectral range, and which is assigned to at least one specific neutral, in particular unused, pixel ...

MULTI-CHANNEL MULTI-WAVELENGTH DETECTION SYSTEM

A radiation aperture system where two sets of apertures are distributed in ring sections of like radius on two parallel rings. As one ring is rotated with respect to its counterpart, one aperture of each ring will align to pass a radiation beam through both apertures. Only a single aperture pair is formed at each unique time, allowing sequential measurements of all combinations of both aperture openings during rotation without halting the rotation. MS-1642 ...

СПОСОБ И УСТРОЙСТВО СКВАЖИННОЙ СПЕКТРОМЕТРИИ С ИСПОЛЬЗОВАНИЕМ ПЕРЕСТРАИВАЕМЫХ ОПТИЧЕСКИХ ФИЛЬТРОВ

Изобретение относится к устройству и способу для получения скважинных спектроскопических данных пробы. Устройство содержит скважинный прибор, включающий эмиттер для испускания широкополосного светового излучения, проходящего по световому пути, пересекающему пробоотборную камеру, принимающую пробу; термически перестраиваемый оптический фильтр для фильтрации испускаемого эмиттером светового излучения, проходящего через пробу с возможностью получения спектроскопических данных, соответствующих воспринимаемому детектором световому излучению, на множестве полос пропускания длин волн светового излучения, причем детектор и термически перестраиваемый оптический фильтр установлены на световом пути. Анализ может быть выполнен в удаленном месте (вне скважины), в скважине (в процессе бурения или на другом этапе) или как часть иного процесса, такого как распределение флюида, транспортировка и обработка.

СПОСОБ И УСТРОЙСТВО СКВАЖИННОЙ СПЕКТРОМЕТРИИ С ИСПОЛЬЗОВАНИЕМ ПЕРЕСТРАИВАЕМЫХ ОПТИЧЕСКИХ ФИЛЬТРОВ

В заявке описано использование в пробоотборниках термически перестраиваемых оптических датчиков для анализа проб, полученных в скважине. Термически перестраиваемые оптические датчики испускают последовательность узкополосных излучений и регистрируют ослабление сигнала от них. Зарегистрированное ослабление обрабатывают и используют для определения параметров проб. Анализ может быть выполнен в удаленном месте (вне скважины), в скважине (в процессе бурения или на другом этапе) или как часть иного процесса, такого как распределение флюида, транспортировка и обработка.

Optical filter, filter system, spectrometer and manufacturing method thereof

SPECTRAL FILTER MICROSTRUCTURE AND SENSOR Of IMAGES

SYSTEM AND METHOD FOR ACQUIRING HYPERSPECTRAL IMAGES

OPTICAL BANDPASS FILTER

COMPONENT FOR DETECTION OF ELECTROMAGNETIC RADIATION IN A WAVELENGTH RANGE AND METHOD OF MANUFACTURING SUCH A COMPONENT

L'invention concerne un composant (1) destiné à la détection et/ou la mesure d'un rayonnement électromagnétique dans une première gamme de longueurs d'onde. Le composant (1) comporte un support (10) comportant au moins une première structure (111, 112) et une face de réception (121) pour recevoir le rayonnement électromagnétique ; un filtre optique (20) du type passe bande dans la première gamme de longueurs d'onde disposé sur la face de réception (121) du support (10). Le filtre optique (20) comporte une zone d'adaptation (220) recouvrant la face de réception (121) du support (10) et d'indice de réfraction inférieur à 2 ; une première couche métallique (230) recouvrant la zone d'adaptation (220) et comprenant des trous traversants (231) régulièrement répartis. Chacun des trous traversants (231) contient un matériau de remplissage (232). Le filtre optique (20) comprend en outre une deuxième couche métallique (260), ladite deuxième couche métallique (260) comprenant des deuxièmes trous traversants ...

AN OPTICAL FILTER DEVICE FOR GAS DETECTION

BIOMETRIC INSTRUMENT

SPECTROMETRIC SENSOR, MANUFACTURING METHOD THEREOF AND SPECTROMETRIC DEVICE USING SAME

The present invention provides a spectrometric sensor which forms a plurality of light transmitting layers having different transmission spectra on a light sensing part as a base material and restores a light spectrum signal of light passing through the light transmitting layer, a manufacturing method thereof and a spectrometric device using the same. To this end, the spectrometric sensor comprises: the light sensing part absorbing the incident light, and generating current; and a light transmitting part integrally forming detection regions of a multi-layer thin film structure having different light transmission spectra on the light sensing part in a matrix array. Therefore, the present invention forms the plurality of light transmitting layers having different transmission spectra on the light sensing part as the base material, thereby significantly increasing the number of individual regions composing a two-dimensional array in comparison with a conventional technique composed as a metallic ...

BIOMETRIC INSTRUMENT

A biometric instrument comprises an illuminating unit for illuminating an organism, i.e., a subject, an imaging unit for photoelectrically converting the light of the illuminating light reflected from the organism and generating an imaging signal, and a signal processing control unit for controlling the operation of the imaging section and outputting the imaging signal to a display. The biometric instrument is characterized in that the signal processing control unit includes a spectral signal generating section for generating a spectral signal corresponding to an image in an optical wavelength narrow band from the imaging signal by signal processing, a color adjusting section for assigning color tones different with the bands where the spectral signal is formed when the spectral signal is outputted to the display, and an image quality adjusting section for adjusting the image quality of the signal outputted to the display, or the other signal processing sections than at least the spectral ...

공간적으로 변하는 미세복제된 층을 갖는 광학 필터

... 일례에서, 예시적인 물품은 파장 선택적 필터에 광학적으로 결합되는 공간적으로 변하는 미세복제된 층을 포함할 수 있다. 파장 선택적 필터는 광 입사각-의존적 광학 대역을 가질 수 있다. 공간적으로 변하는 미세복제된 층은 파장 선택적 필터의 제1 광학 영역으로 제1 미리결정된 입사각으로 그리고 파장 선택적 필터의 제2 광학 영역으로 제2 미리결정된 입사각으로 광을 투과시키도록 구성될 수 있다.

Method for non-invasive monitoring of fluorescent tracer agent with diffuse reflection corrections

METHODS AND DEVICES FOR DETERMINING A CHARACTERISTIC OF A SUBSTANCE OPTICALLY

Se revelan dispositivos informáticos ópticos. Un dispositivo informático óptico ejemplar incluye una fuente de radiación electromagnética configurada para interactuar ópticamente con una muestra y por lo menos dos elementos informáticos integrados. Por lo menos los dos elementos informáticos integrados están configurados para producir luz de interacción óptica y además están configurados para ser asociados con una característica de la muestra. El dispositivo informático óptico además incluye un primer detector dispuesto para recibir la luz de interacción óptica de por lo menos dos elementos informáticos integrados y así generar una primera señal que corresponde a la característica de la muestra.

METHOD FOR NON-INVASIVE MONITORING OF FLUORESCENT TRACER AGENT WITH DIFFUSE REFLECTION CORRECTIONS

PREPROCESSING SUBUNIT POST-AGENT ADMINISTRATION SELECTION SUBUNIT RDTC CALCULATION FAULT DETECTION SUBUNIT SUBUNIT PROCESSING UNIT 1308 ) 1304 ) 1306 ) BACKGROUND SUBTRACTION SUBUNIT BACKGROUND CORRECTION SUBUNIT 1310 ) 1312.. (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 02 August 2018 (02.08.2018) WIP0 I PCT onion °nolo olomoiloimoinomo oimIE (10) International Publication Number WO 2018/140978 Al • (57) : A method of monitoring a time-varying fluorescence signal emitted from a fluorescent agent from within a medium GC with time-varying optical properties is provided that includes providing a measurement data set that includes a plurality of measure- ment entries that include at least two measurements obtained from a patient before and after administration of the fluorescent agent. © The measurements may include one or more of: a DR ex signal detected ...

DIGITAL LIGHT PROCESSING HYPERSPECTRAL IMAGING APPARATUS

A hyperspectral imaging system having an optical path. The system including an illumination source adapted to output a light beam, the light beam illuminating a target, a dispersing element arranged in the optical path and adapted to separate the light beam into a plurality of wavelengths, a digital micromirror array adapted to tune the plurality of wavelengths into a spectrum, an optical device having a detector and adapted to collect the spectrum reflected from the target and arranged in the optical path and a processor operatively connected to and adapted to control at least one of: the illumination source; the dispersing element; the digital micromirror array; the optical device; and, the detector, the processor further adapted to output a hyperspectral image of the target. The dispersing element is arranged between the illumination source and the digital micromirror array, the digital micromirror array is arranged to transmit the spectrum to the target and the optical device is arranged ...

SURFACE PLASMON-ENHANCED NANO-OPTIC DEVICES AND METHODS OF MAKING SAME

A nanostructured optical device includes a metal film or a plurality of metal islands having an array of a plurality of openings having a width that is less than at least one first predetermined wavelength of incident radiation to be provided onto the film or the islands. The metal film or islands are configured such that the incident radiation is resonant with at least one plasmon mode on the metal film or metal islands.

Systems and methods for multispectral imaging

A system ( 10 ) for multispectral imaging includes a first optical filter ( 24, 20 ) having at least two passbands disposed in different spatial positions on the first optical filter, a second optical filter ( 20, 24 ) having another at least two passbands, and processor ( 32 ) adapted to identify an intensity of light in the at least two passband of the second optical filter

Optically variable filter apparatus and filter characteristic control method thereof

Light from an optical fiber is incident on a frequency dispersion element. The frequency dispersion element disperses the incident light into light beams in different directions according to their frequencies and directs the dispersed light beams to a lens. The lens develops the incident light beams over an xy plane according to their frequencies in a strip-like form. A frequency selective element has pixels arranged in a frequency dispersion direction and brings pixels located at positions corresponding to the frequency to be selected into a reflective state. A light beam selected by the frequency selective element is emitted from an optical fiber through the same path. By changing reflection characteristics of the frequency selective element according to each pixel, optical filter characteristics can be desirably changed so as to achieve change of passband width and frequency shift.

Spectrum measuring apparatus for mover

Disclosed is a mover spectrum measuring apparatus, which is able to discriminate an object being measured more reliably by relieving the influences of an environmental light on photographic data by a spectrum sensor mounted on a mover such as a vehicle. A spectrum sensor capable of measuring wavelength information and optical intensity information is mounted on a vehicle, so that an object being measured around the vehicle is discriminated on the basis of the spectrum data relating to the observation light detected by the spectrum sensor. The mover spectrum measuring apparatus comprises an illumination device for making variable the featuring quantity of at least either the wavelength range of the observation light or the optical intensity of each wavelength, and controls the featuring quantity varying mode by the illumination device through an illumination controller on the basis of the control value according to an environmental element.

Optical fiber measurement device and measurement method using same

Disclosed is a highly reliable optical fiber measurement device and measurement method having a simple and compact structure. The device includes a planar liquid holder having a plurality of liquid holding portions arranged along a flat face; a plurality of light receiving optical fibers for transmitting fluorescence generated in the liquid holding portions; a plurality of light emitting optical fibers for transmitting excitation light into the liquid holding portions; a measurement head capable of being positioned in the each liquid holding portion while supporting a plurality of measurement ends having a bundle of one light receiving end of the light receiving optical fibers and one light emitting end of light emitting optical fibers; a light reception selecting element that, by sequentially selecting one by one from plural the light receiving optical fibers and sequentially selecting one by one from plural kinds of wavelength or wavelength bands, sequentially guides the light of the selected wavelength or wavelength band of the fluorescence received by the selected light receiving optical fibers to one photoelectric element; and a photoelectric element for sequentially conducting photoelectric conversion on the guided fluorescence.

Optical sensor and electronic apparatus

An optical sensor includes a light receiving element (for example a photodiode) and an angle limiting filter that limits the incidence angle of incidence light with respect to the light receiving area of the light receiving element. When a wavelength of the incidence light is denoted by λ, a height of the angle limiting filter is denoted by R, and a width of an opening of the angle limiting filter is denoted by d, “d 2 /λR≧2” is satisfied.

Signal processing for optical computing system

The present subject matter relates to an apparatus and related method of high-speed analysis of product samples during production of the product. Light is directed to a portion of a product under analysis and reflected from or transmitted through the product toward optical detectors. Signals from the optical detectors are compared to determine characteristics of the product under analysis. Temperature within the monitoring system may be monitored in order to provide compensation for the signals produced by the optical detectors. The products under analysis may be stationary, moved by an inspection point by conveyor or other means, or may be contained within a container, the container including a window portion through which the product illuminating light may pass.

Optical system enabling low power excitation and high sensitivity detection of near infrared to visible upconversion phoshors

A simple yet high performance optical system is described which is tailored to enabling efficient detection of the luminescence emissions of near infrared-to-visible upconverting phosphors. The system is comprised of simple and relatively low cost optical components and is designed to telecentrically enable low optical power NIR excitation and high sensitivity VIS and NIR detection of the upconverting phosphor (UCPs), particularly the lanthanide doped UCP nanocrystals which show great promise for utility as molecular taggants in many applications of biomedicine, security and environmental monitoring. The overall system is designed to facilitate compact spectrophotometric instrument manufacture and is adaptable to multiple liquid or solid sample types and formats.

System and Method for Correcting Spectral Response Using a Radiometric Correction Filter

The present disclosure provides for a correction filter that may be configured to comprise a predetermined arrangement of thin film layers. This arrangement of thin film layers may be such that it effectively enables a correction filter to generate a predetermined spectral response, wherein said predetermined spectral response is substantially the same as a determined instrument response correction associated with an instrument. The invention of the present disclosure therefore provides for effectively compensating for transmission inefficiencies associated with an instrument without the need for separate reference measurements to determine and correct for instrument response.

Integrating sphere photometer and measuring method of the same

Provided are an integrating sphere photometer and a measuring method of the same. The integrating sphere photometer includes a plurality of photodetectors, an integrating sphere having through-holes formed to correspond to the photodetectors, baffles disposed inside the integrating sphere in front of the photodetectors to be spaced apart from the photodetectors, a photometer disposed at a through-hole, and an adjustment unit adjusting output signals of the photodetectors to have the same output signal with respect to light illuminated from a point-like standard light source disposed at a center region in the integrating sphere.

Multiband camera, and multiband image capturing method

A multiband camera comprises: a band-pass filter having four or more optical filters; a microlens array having arrayed microlenses; a photoelectric conversion element including a plurality of pixels; and a measurement unit for measuring spectral intensity. The multiband camera satisfies the expression below, where Pl is a pitch between the microlenses, Ps is a pitch between the pixels, n is a number of pixels corresponding to one microlens, u is an effective dimension in a prescribed direction of the pixels, t is a dimension in the prescribed direction of a real image that the band-pass filter forms on a plurality of two-dimensionally arrayed pixels, Na is a number of microlenses arrayed in the prescribed direction, L is a distance from an exit pupil to the microlens, and f is a focal length of the microlens. [ Expression   14 ] ( 1 - f L )  n   Ps - 3  Ps - u - t Na ≤ Pl ≤ ( 1 - f L )  nPs + 3  Ps - u - t Na

System, method and computer software product for detection of ground anomalies using dual-filter infrared imaging

A system including a sensor to receive scattered light from a scene in a thermal infrared spectral region, a Modified Integrated Thermal (MIT) band filter to acquire MIT band data within a thermal detection bandwidth, a sub-band filter to acquire a first sub-band data within a first sub-band bandwidth which is within the thermal detection bandwidth. The sub-band filter is a Reference band filter to capture Reference band data or a Reststrahlen band filter to capture Reststrahlen band data. The system also includes one or more processors configured to perform differencing of the MIT band data and the first sub-band data to compute a second sub-band data. The computed second sub-band data is Reference band data when the sub-band filter is the Reststrahlen band filter or the computed second sub-band data is Reststrahlen band data when the sub-band filter is the Reference band filter. A method and a computer software product are also disclosed.

Spectrometer Apparatus and a Corresponding Method for Operating a Spectrometer Apparatus

A spectrometer apparatus is disclosed that includes at least one light source for irradiating a sample with light, an optical detection device for detecting light scattered by the sample, at least one optical filter device, which is arranged in front of and/or behind the sample, a contact sensor device for determining a contact between the sample and the spectrometer apparatus and for outputting a corresponding output signal, a control device for controlling the light source and the detection device in response to the output signal. The control device is designed such that the control device modifies at least one operating parameter of the light source and the detection device, when the output signal indicates the contact between the sample and the spectrometer apparatus. A method for operating a spectrometer apparatus is disclosed as well. 1. A spectrometer apparatus comprising:at least one light source configured to irradiate a sample with light;an optical detection device configured to detect the light scattered by the sample;at least one optical filter device arranged in front of and/or behind the sample,a contact sensor device configured to determine a contact between the sample and the spectrometer apparatus and to output a corresponding output signal;a control device to control the light source and the detection device in response to the output signal;wherein the control device is designed such that it changes at least one operating parameter of the light source and of the detection device if the output signal indicates the contact between the sample and the spectrometer apparatus.2. The spectrometer apparatus as claimed in claim 1 , wherein the control device is designed such that the detection of the spectrum is activated only in the case where contact between the spectrometer apparatus and the sample is present.3. The spectrometer apparatus as claimed in claim 1 , wherein the control device is designed such that the detection of the spectrum is activated ...

SCANNING PROBE HAVING MICRO-TIP, METHOD AND APPARATUS FOR MANUFACTURING THE SAME

The present disclosure provides a scanning probe, a method and an apparatus for manufacturing the scanning probe. The scanning probe includes a base and a micro-tip disposed on an end of the base, wherein at least a section of the micro-tip comprises a lateral surface with a concavely curved generatrix. In the method, an end of a probe precursor is immersed in a corrosive solution by having a length direction of the probe precursor inclined with a liquid surface of the corrosive solution. The probe precursor is corroded by the corrosive solution while a corrosion current of the corroding is monitored. The probe precursor is moved away from the corrosive solution after a magnitude of the corrosion current has a plunge. The apparatus includes a container containing the corrosive solution, and a driving device configured to move the probe precursor in the container through a fastener. 1. A scanning probe comprising:a base; anda micro-tip disposed on an end of the base,wherein at least a section of the micro-tip comprises a lateral surface with a concavely curved generatrix; and the micro-tip comprises diameter-changing sections, and the micro-tip comprises a converged lateral tip, a converged lateral edge, or a combination thereof disposed between the diameter-changing sections.2. The scanning probe of claim 1 , wherein the diameter-changing sections comprises a first diameter-changing section claim 1 , a second diameter-changing section claim 1 , and a distal section.3. The scanning probe of claim 2 , wherein two opposite ends of the second diameter-changing section respectively connect the first diameter-changing section and the distal section.4. The scanning probe of claim 3 , wherein the first diameter-changing section is adjacent to the base claim 3 , and the second diameter-changing section is adjacent to the distal section.5. The scanning probe of claim 2 , wherein the distal section has a ball shape or an ellipsoid shape.6. The scanning probe of claim 1 , ...

SELECTIVE WAVELENGTH IMAGING SYSTEMS AND METHODS

The present disclosure provides wavelength discriminating imaging systems and methods that spatially separate (over different depths) the wavelength constituents of an image using a dispersive element or lens, such that this spectral information may be exploited and used. The wavelength constituents of an image are deconstructed and identified over different depths using the dispersive element or lens. 1. A spectral imaging system , comprising:a dispersive element operable for separating wavelengths associated with an image by distance; anda sensor operable for determining a given wavelength from the separated wavelengths using the distance.2. The spectral imaging system of claim 1 , wherein the dispersive element comprises a lens and a dispersive medium.3. The spectral imaging system of claim 2 , wherein the dispersive medium comprises a dispersive lens.4. The spectral imaging system of claim 1 , wherein the dispersive element comprises a plurality of lenses separated by a dispersive medium.5. The spectral imaging system of claim 1 , further comprising one of a camera and a light field camera.6. The spectral imaging system of claim 1 , further comprising an imaging system.7. The spectral imaging system of claim 1 , further comprising a confocal system.8. The spectral imaging system of claim 1 , further comprising a microlens array.9. The spectral imaging system of claim 1 , further comprising a lens array having varying focal lengths.10. The spectral imaging system of claim 1 , further comprising a lens array having varying displacements with respect to a lens array plane.11. The spectral imaging system of claim 1 , further comprising a lens and one or more beamsplitters operable for dividing a beam from the lens into a plurality of beams.12. The spectral imaging system of claim 1 , further comprising one or more filters operable for separating wavelengths.13. The spectral imaging system of claim 1 , further comprising a profilometry algorithm operable for ...

OPTICAL FILTER AND SPECTROMETER

An optical assembly is disclosed including two laterally variable bandpass optical filters slacked at a fixed distance from each other, so that the upstream filter functions as a spatial filler for the downstream filter. The lateral displacement may cause a suppression of the oblique beam when transmission passbands at impinging locations of the oblique beam onto the upstream and downstream filters do not overlap. A photodetector array may be disposed downstream of the downstream filter. The optical assembly may be coupled via a variety of optical conduits or optical fibers for spectroscopic measurements of a flowing sample. 132-. (canceled)33. An optical assembly comprising: the two-dimensional array of bandpass optical filter segments including two or more one-dimensional arrays arranged side by side in a first direction, and', 'each of the two or more one-dimensional arrays being arranged side by side in a second, different direction and having a transmission center wavelength that is unique to the two-dimensional array., 'a filter comprising a two-dimensional array of bandpass optical filter segments,'}34. The optical assembly of claim 33 , further comprising: 'the first end being configured for contacting or inserting into a sample, thereby collecting signal light that emanates from the sample.', 'a relay lightpipe that extends between a first end and a second end,'}35. The optical assembly of claim 34 , wherein the relay lightpipe is further configured for unconstrained propagation of the signal light from the first end to the second end.36. The optical assembly of claim 34 , wherein the relay lightpipe comprises mirrored internal walls.37. The optical assembly of claim 34 , wherein the first end comprises a slanted optical surface.38. The optical assembly of claim 33 , further comprising:a different filter comprising a different two-dimensional array of bandpass optical filter segments.39. The optical assembly of claim 33 , further comprising:a grid that ...

Signal collection spectrometer

A spectrometer for studying a sample comprises a light guide for receiving light from the sample. The received light is emitted by the light guide through an exit surface that is on a side of the light guide and extending in a longitudinal direction of the light guide. The light emitted through the exit surface is filtered by a linear variable filter having an array of bandpass filters extending alongside and adjacent the exit surface. The filtered light is detected by the photodetectors of a detector array disposed parallel to the linear variable filter, and signals of the photodetectors are analyzed to obtain a spectral distribution of the light from the sample.

WAFER LEVEL SPECTROMETER

A sensor apparatus has a substrate and a spectrally selective detection system, and a cover. The spectrally sensitive detection system is sandwiched between the substrate and the cover. The spectrally selective detection system includes a generally laminar array of wavelength selectors optically coupled to a corresponding array of optical detectors located within the substrate. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 1. A sensor apparatus , comprising:a) a substrate;b) a spectrally selective detection system that includes a generally laminar array of optical wavelength selectors optically coupled to a corresponding array of optical detectors located within the substrate;c) a cover, wherein the spectrally sensitive detection system is sandwiched between the substrate and the cover.2. The sensor apparatus of further comprising an optical element formed within the cover claim 1 , wherein the optical element is optically coupled to the spectrally selective detection system.3. The sensor apparatus of further comprising anoptical element formed as part of the cover, wherein the optical element is optically coupled to the spectrally selective detection system.4. The sensor apparatus of claim 1 , wherein the wavelength selective detection system includes a photonic crystal spectrometer comprising an array of photonic crystal patterns nanofabricated and coupled to a corresponding photodiode array.5. The sensor apparatus of claim 1 , wherein the wavelength selective detection system includes one or more thin film interference filters.6. The sensor apparatus of claim 29 , wherein the one or more thin film interference filters is integral to the array of optical detectors.7. The sensor ...

TUNABLE FILTERS FOR SPECTRAL SENSING

A spectroscopic analysis device for analysis of a sample comprising: a photonic integrated circuit (PIC) comprising: an input (DEF) for receiving light from the sample; and a demultiplexer (DEMUX) arranged to distribute the received light into at least a first optical chain (C) and a second optical chain (C); wherein each optical chain (C C) of the photonic integrated circuit C(PIC) further comprises a tunable bandpass filter (TBF TBF) and a variable attenuator (ATT ATT) and a photodetector (PD PD) arranged respectively to filter and to attenuate and to detect the light distributed into its corresponding optical chain (C C). 1. A spectroscopic analysis device for analysis of a sample of a substrate , the device comprising:a photonic integrated circuit (PIC) comprising:an input (DEF) for receiving light from the sample;a demultiplexer (DEMUX),{'b': 1', '2, 'at least a first optical chain (C) and a second optical chain (C),'}{'b': 1', '2, 'wherein the demultiplexer (DEMUX) is arranged to distribute the received light into the first optical chain (C) and a second optical chain (C);'}{'b': 1', '2', '1', '2', '1', '2', '1', '2', '1', '2, 'wherein each optical chain (C, C) of the photonic integrated circuit (PIC) further comprises a tunable bandpass filter (TBF, TBF) and a variable attenuator (ATT, ATT) and a photodetector (PD, PD) arranged respectively to filter and to attenuate and to detect the light distributed into its corresponding optical chain (C, C),'}wherein the spectroscope analysis device further comprises: [{'b': 1', '2, 'to control the two or more tunable bandpass filters (TFB, TFB),'}, {'b': 1', '2, 'to control the two or more variable attenuators (ATT, ATT),'}, {'b': 1', '2, 'to receive photodetector results obtained from the two or more photodetectors (PD, PD), and'}, 'to provide spectroscope analysis results based on the received photodetector results,, 'a controller (MC) arranged,'}{'b': 1', '2', '1', '2', '1', '2', '1', '2', '1', '2, 'wherein the ...

FTIR Spectrometer with Optical Filter for Low Level Gas Detection such as Formaldehyde and Ethylene Oxide

A gas analysis system with an FTIR spectrometer preferably utilizes a long path gas cell, a narrow band detector, and an optical filter that narrows the detection region. The interferograms are further prevent baseline drift and analyze the resultant spectra. 1. A Fourier transform infrared spectrometry system , comprising:a source for generating light;an interferometer for receiving the light;a sample cell containing a gas sample;a narrowband detector for detecting the light after passing through the sample gas; anda bandpass filter for filtering light prior to being detected the detector, with the interferometer providing resolution within a bandpass of the bandpass filter.2. The system of claim 1 , wherein the detector is a MCT detector.3. The system of claim 1 , wherein the detector has at least an 8 μm cutoff.4. The system of claim 1 , wherein the detector has at least a 5 μm cutoff.5. The system of claim 1 , wherein the optical filter has a bandpass of less than 450 cm.6. The system of claim 1 , wherein the optical filter has a bandpass of less than 300 cm.7. The system of claim 1 , wherein peak detectivity “D*” of the detector is higher than 1×10.8. The system of claim 1 , further comprising a controller detecting an output of the detector as the interferometer is scanned and processing interferograms within the bandpass of the bandpass filter at two resolutions and using the interferograms processed at a lower resolution as a background for interferograms processed at a higher resolution.9. The system of claim 8 , wherein the controller employs cosine apodization.10. The system of claim 8 , wherein the controller adds a filter spectrum of the filter into a regression analysis.11. A spectrometry method claim 8 , comprising:analyzing a gas sample with a Fourier transform infrared spectrometer;detecting the light after passing through the sample gas; andfiltering light prior to being detected.12. The method of claim 11 , wherein the light is detected with a MCT ...

System for matching coarseness appearance of coatings

Systems and method for matching appearance of a target coating on a substrate is provided herein. The system includes a coating chip including a chip coating layer. The chip coating layer has a chip coarseness. The system further includes an illumination component configured to illuminate the chip coating layer with a light having an illumination color. The chip coating layer exhibits the chip coarseness and the illumination color in the presence of the light having the illumination color. The chip coating layer exhibiting the chip coarseness and the illumination color is utilized for matching the appearance of the target coating.

Sensor with ultra-narrow bandpass

An optical system with ultra-narrow optical band-pass comprising an objective lens group, and a relay group, having a collimating system, the relay group being in optical communication with the objective lens group.

Light detection device and electronic apparatus

A light detection device includes a semiconductor substrate, a signal detection light receiving portion that is formed in the semiconductor substrate, an infrared light receiving portion that is formed in the semiconductor substrate, a first color filter that covers the signal detection light receiving portion and that has a first spectral characteristic such that the first color filter passes therethrough light in a first wavelength range within the wavelength range of visible light and in the wavelength range of infrared light, a second color filter that covers the infrared light receiving portion and that has a second spectral characteristic such that the second color filter passes therethrough light in a second wavelength range within the wavelength range of visible light and in the wavelength range of infrared light, a third color filter that covers the infrared light receiving portion and that has a third spectral characteristic such that the third color filter passes therethrough light in a third wavelength range different from the second wavelength range within the wavelength range of visible light and in the wavelength range of infrared light, and an infrared cut filter that covers the signal detection light receiving portion and that has an opening in a region opposite to the infrared light receiving portion.

Near-infrared time-of-flight imaging using laser diodes with bragg reflectors

A remote sensing system includes an array of laser diodes configured to generate light. One or more scanners are configured to receive a portion of the light from the array of laser diodes and to direct the portion of the light from the array of laser diodes to an object. A detection system is configured to receive at least a portion of light reflected from the object and is configured to be synchronized to the at least a portion of the array of laser diodes comprising Bragg reflectors. The remote sensing system is configured to generate a two-dimensional or three-dimensional mapping using at least a portion of a time-of-flight measurement. The remote sensing system is adapted to be mounted on a vehicle and communicate with a cloud. The at least a portion of the two-dimensional or three-dimensional mapping is combined with global positioning system information.

TECHNIQUE FOR DETERMINING PRESENCE OF A SPECIES IN A SAMPLE

A technique of determining the presence of a species in a sample may include passing light through an optical filter. In an example, the optical filter may include a spatially variant microreplicated layer optically coupled to a wavelength selective filter. The wavelength selective filter may have a light incidence angle-dependent optical band. The spatially variant microreplicated layer may be configured to transmit light to a first optical region of the wavelength selective filter at a first predetermined incidence angle and to a second optical region of the wavelength selective filter at a second predetermined incidence angle. 1. A technique comprising:illuminating a sample with a light source to obtain a characteristic light;passing the characteristic light through a spatially variant microreplicated layer optically coupled to a wavelength selective filter to transmit filtered characteristic light to each region of a plurality of regions of the wavelength selective filter at a respective incidence angle of a plurality of incidence angles, each respective incidence angle associated with a known narrow band of a plurality of narrow bands;sensing a respective intensity of the filtered characteristic light transmitted by each respective region of the wavelength selective filter at a respective sensor element of a plurality of sensor elements;comparing a filtered characteristic spectrum sensed by the plurality of sensor elements with a known reference spectrum associated with a species by curve fitting each sensed respective intensity against the known reference spectrum, wherein the curve fitting comprises matching each sensed respective intensity with a respective expected intensity associated with the respective narrow band associated with the respective region that transmitted the respective intensity of the filtered characteristic light; anddetermining the presence of the species in the sample based on the comparison.2. The technique of claim 1 , wherein the ...

Overlay Metrology Using Multiple Parameter Configurations

An overlay metrology system includes an overlay metrology tool configurable to generate overlay signals with a plurality of recipes and further directs an illumination beam to an overlay target and collects radiation emanating from the overlay target in response to the at least a portion of the illumination beam to generate the overlay signal with the particular recipe. The overlay metrology system further acquires two or more overlay signals for a first overlay target using two or more unique recipes, subsequently acquires two or more overlay signals for a second overlay target using the two or more unique recipes, determines candidate overlays for the first and second overlay targets based on the two or more overlay signals for each target, and determines output overlays for the first and second overlay targets based on the two or more candidate overlays for each target.

Method For Fabrication Of A Multivariate Optical Element

A method for fabricating an optical element including selecting a lamp spectrum and bandpass filter spectrum, obtaining a spectral characteristics vector to quantify the concentration of a component in a sample and obtaining a target spectrum from the lamp spectrum, the bandpass filter spectrum, and the spectral characteristics vector, is provided. Further including selecting a number of layers less than a maximum value, and performing an optimization routine using the index of refraction and thickness of each of the number of layers until an error between a model spectrum and the target spectrum is less than a tolerance value, or a number of iterations is exceeded. And reducing the number of layers if the error is less than a tolerance and stopping the procedure if the number of iterations is exceeded. A device using an optical element for optically-based chemometrics applications fabricated using the method above is also provided. 114-. (canceled)15. A device using a plurality of optical elements for optically-based applications comprising:a multivariate optical element having a number of thin film layers formed on a single face thereof;wherein the number of thin film layers is less than a maximum number of layers, the maximum number selected according to a first tolerance; andwherein the number of thin film layers is obtained by an optimization routine comprising the step of reducing the number of layers if an error between a model spectrum and a target spectrum is less than a second tolerance, the optimization routine applying a first detector proportionality constant.16. The device of claim 15 , wherein the plurality of optical elements comprises an absorption element.17. The device of claim 15 , wherein the plurality of optical elements comprises a holographic element.18. The device of claim 15 , wherein the plurality of optical elements comprises an optical fiber.19. The device of claim 15 , wherein the plurality of optical elements are multiplexed in time. ...

Methods and apparatus for coaxial imaging of multiple wavelengths

A hyperspectral/multispectral imager comprising a housing is provided. At least one light source is attached to the housing. An objective lens, in an optical communication path comprising originating and terminating ends, is further attached to the housing and causes light to (i) be backscattered by the tissue of a subject at the originating end and then (ii) pass through the objective lens to a beam steering element at the terminating end of the communication path inside the housing. The beam steering element has a plurality of operating modes each of which causes the element to be in optical communication with a different optical detector in a plurality of optical detectors offset from the optical communication path. Each respective detector filter in a plurality of detector filters covers a corresponding optical detector in the plurality of optical detectors thereby filtering light received by the corresponding detector from the beam steering element.

Dmd based uv absorption detector for liquid chromatography

A detector for use in liquid chromatography is provided. The detector includes a light delivery system comprising a light source that emits one or more spectral lines of light of a light spectrum. The detector has an entrance slit configured to receive the one or more spectral lines of light and a wavelength selection module comprising a digital micro-mirror device. The digital micro-mirror device is configured to redirect the one or more spectral lines of light to a flow cell. The flow cell is optically connected to the wavelength selection module.

System and Method for Generating Multi-Channel Tunable Illumination from a Broadband Source

A metrology system includes an illumination source to generate an illumination beam, a multi-channel spectral filter, a focusing element to direct illumination from the single optical column to a sample, and at least one detector to capture the illumination collected from the sample. The multi-channel spectral filter includes two or more filtering channels having two or more channel beam paths. The two or more filtering channels filter illumination propagating along the two or more channel beam paths based on two or more spectral transmissivity distributions. The multi-channel spectral filter further includes a channel selector to direct at least a portion of the illumination beam into at least one selected filtering channel to filter the illumination beam. The multi-channel spectral filter further includes at least one beam combiner to combine illumination from the two or more filtering channels to a single optical column. 1. A metrology system , comprising:an illumination source configured to generate an illumination beam; two or more filtering channels including two or more channel beam paths, wherein the two or more filtering channels are configured to filter illumination propagating along the two or more channel beam paths based on two or more spectral transmissivity distributions; and', 'a channel selector configured to direct at least a portion of the illumination beam into at least one selected filtering channel of the two or more filtering channels to filter the at least a portion of the illumination beam based on a selected spectral transmissivity distribution of the two or more spectral transmissivity distributions;, 'a multi-channel spectral filter, comprisingat least one beam combiner to combine illumination from the two or more filtering channels to a single optical column;a focusing element to direct illumination from the single optical column to a sample; andat least one detector to capture radiation from the sample.2. The metrology system of claim 1 ...

SPECTROSCOPIC SENSOR DEVICE AND METHOD FOR OPERATING A SPECTROSCOPIC SENSOR DEVICE

A spectroscopic sensor device comprising an absorption path for receiving at least one fluid medium that is to be analyzed, an infrared radiation source for sending out infrared radiation into the absorption path, an infrared sensor array that has a multiplicity of pixels that can be individually evaluated, which are fashioned to detect the infrared radiation propagated from the infrared radiation source through the fluid medium as individual pixel measurement signals, and comprising an evaluation device that is fashioned to combine a multiplicity of pixel measurement signals of the pixels and to output them via an individual measurement channel. Furthermore, a method for operating a spectroscopic sensor device is also described. 111-. (canceled)12. A spectroscopic sensor device , comprising:an absorption path for receiving at least one fluid medium that is to be analyzed;an infrared radiation source for sending out infrared radiation into the absorption path;an infrared sensor array that has a multiplicity of pixels that can be individually evaluated, which are fashioned to detect the infrared radiation propagated from the infrared radiation source through the fluid medium as individual pixel measurement signals, the pixels of one or more pixel regions of the infrared sensor array being provided at least partly with a respective optical filter for the wavelength-selective transmission of the infrared radiation; andan evaluation device that is fashioned to combine a multiplicity of pixel measurement signals of the pixels and to output them via an individual measurement channel, the evaluation device being fashioned to determine the position of the optical filter or filters.13. The spectroscopic sensor device as recited in claim 12 , wherein at least two pixels of the infrared sensor array are fashioned to detect a first gas claim 12 , and being provided with a first optical filter for the wavelength-selective transmission of the infrared radiation.14. The ...

COMPACT LIGHT SENSOR

Provided are methods and systems for concurrent imaging at multiple wavelengths. In one aspect, a hyperspectral/multispectral imaging device includes a lens configured to receive light backscattered by an object, a plurality of photo-sensors, a plurality of bandpass filters covering respective photo-sensors, where each bandpass filter is configured to allow a different respective spectral band to pass through the filter, and a plurality of beam splitters in optical communication with the lens and the photo-sensors, where each beam splitter splits the light received by the lens into a plurality of optical paths, each path configured to direct light to a corresponding photo-sensor through the bandpass filter corresponding to the respective photo-sensor. 130.-. (canceled)31. An imaging device , comprising:a lens disposed along an optical axis and configured to receive light, wherein the lens has a fixed focal distance;one or more photo-sensors;an optical path assembly in optical communication with the lens and the one or more photo-sensors; and when the surface is located at the fixed focal distance from the lens along the optical axis, the composite image forms a first pattern of light onto the surface, and', 'when the surface is located at a distance other than the fixed focal distance from the lens along the optical axis, the composite image forms a pattern of light that is different than the first pattern of light onto the surface., 'at least two projectors, wherein the at least two projectors are configured to project a composite image onto a surface positioned in front of the lens, wherein32. The imaging device of claim 31 , wherein each of the at least two projectors are configured to project a same respective individual pattern of light such that:when the surface is located at the fixed focal distance from the lens along the optical axis, the respective individual pattern of light projected from each of the at least two projectors converge on the surface, ...

TECHNIQUE AND APPARATUS FOR SPECTROPHOTOMETRY USING BROADBAND FILTERS

A spectrophotometer is provided, which comprises a receiving part diffusing an incident light, a first broadband filter group, and a detector detecting the light having passed through the first broadband filter group, in order to easily select and detect a plurality of lights having specific wavelengths, wherein the first broadband filter group comprises a first broadband filter arranged to have a first angle with respect to an incident direction of light to enable the incident light to pass through a first wavelength band, a second broadband filter arranged to have a second angle, which is different from the first angle, with respect to an incident direction of light to enable the light having passed through the first broadband filter to pass through a second wavelength band, and a first path compensation means for adjusting a path of the light having passed through the second broadband filter to be identical to a path of the light having passed through the first broadband filter, wherein the first broadband filter, the second broadband filter and the first path compensation means are arranged in series with respect to the incident direction of light. Accordingly, it is possible to increase the efficiency of the outputted light compared to the incident light, and to detect a plurality of lights having the desired specific wavelengths at the same time. 1. A spectrophotometer for analyzing a light having a specific wavelength band from an incident light , the spectrophotometer comprising:a receiving part diffusing an incident light from one side at the other side, wherein the receiving part is configured of one of an optical fiber, a rod and a concave lens, which can diffuse an incident light;a first broadband filter group; anda detector detecting the light having passed through the first broadband filter group,wherein the first broadband filter group comprises a first broadband filter arranged to have a first angle with respect to an incident direction of light to ...

EXPLOSIVE SPARK ESTIMATION SYSTEM AND EXPLOSIVE SPARK ESTIMATION METHOD

According to one implementation, an explosive spark estimation system includes an explosive spark estimation system includes a measuring system and a processing system. The measuring system is adapted to measure intensity of light, included in a spark occurred from an object to be tested. The light is within at least one specific wavelength band. The processing system is adapted to determine whether the spark is explosiveness based on the intensity of the light. Further, according to one implementation, an explosive spark estimation method includes: measuring intensity of light, included in a spark occurred from an object to be tested, within at least one specific wavelength band; and determining whether the spark is explosive, based on the intensity of the light. 1. An explosive spark estimation system comprising:a measuring system that is adapted to measure intensity of light, included in a spark occurred from an object to be tested, using a photodetector, the light being within at least one specific wavelength band; andprocessing circuitry that is adapted to determine whether the spark is explosiveness based on the intensity of the light.2. The explosive spark estimation system according to claim 1 ,wherein the processing circuitry is adapted to determine that the spark is explosive when a peak has been detected in a wavelength spectrum of the light in the at least one specific wavelength band.3. The explosive spark estimation system according to claim 1 ,wherein the processing circuitry is adapted to determine whether the spark is explosive, based on an amount of deviation between a wavelength spectrum of the light in the at least one specific wavelength band and a reference wavelength spectrum of light.4. The explosive spark estimation system according to claim 1 ,wherein the at least one specific wavelength band comprises at least one of a first wavelength band within not less than 588 nm and not more than 591 nm, a second wavelength band within not less than ...

Multi-spectral method for detection of anomalies during powder bed fusion additive manufacturing

Embodiments of the systems can be configured to receive electromagnetic emissions of a substrate (e.g., a build material of a part being made via additive manufacturing) by a detector (e.g., a multi-spectral sensor) and generate a ratio of the electromagnetic emissions to perform spectral analysis with a reduced dependence on location and orientation of a surface of the substrate relative to the multi-spectral sensor. The additive manufacturing process can involve use of a laser to generate a laser beam for fusion of the build material into the part. The system can be configured to set the multi-spectral sensor off-axis with respect to the laser (e.g., an optical path of the multi-spectral sensor is at an angle that is different than the angle of incidence of the laser beam). This can allow the multi-spectral sensor to collect spectral data simultaneously as the laser is used to build the part.

SPECTRAL IMAGING SYSTEM FOR REMOTE AND NONINVASIVE DETECTION OF TARGET SUBSTANCES USING SPECTRAL FILTER ARRAYS AND IMAGE CAPTURE ARRAYS

An approach to noninvasively and remotely detect the presence, location, and/or quantity of a target substance in a scene via a spectral imaging system comprising a spectral filter array and image capture array. For a chosen target substance, a spectral filter array is provided that is sensitive to selected wavelengths characterizing the electromagnetic spectrum of the target substance. Elements of the image capture array are optically aligned with elements of the spectral filter array to simultaneously capture spectrally filtered images. These filtered images identify the spectrum of the target substance. Program instructions analyze the acquired images to compute information about the target substance throughout the scene. A color-coded output image may be displayed on a smartphone or computing device to indicate spatial and quantitative information about the detected target substance. The system desirably includes a library of interchangeable spectral filter arrays, each sensitive to one or more target substances. 1. A spectral imaging system for remotely and noninvasively detecting the presence and location of one or more target substances in a scene , said system comprising:a) an image capture array comprising a plurality of image capturing elements; (i) each spectral filter array is pre-associated with at least one corresponding target substance;', '(ii) each spectral filter array includes a plurality of spectral filtering elements, wherein each spectral filtering element of said plurality of spectral filtering elements selectively passes a pre-selected bandwidth portion of the electromagnetic spectrum that is pre-associated with a spectral characteristic of the corresponding target substance;', '(iii) each of the plurality of spectral filter arrays is selectable and positionable on demand to be aligned with the image capture array such that each of at least two or more of the image capturing elements is optically aligned with at least one corresponding ...

FLUORESCENCE MICROSCOPE LIGHT SOURCE APPARATUS AND FLUORESCENCE MICROSCOPE

Disclosed are a fluorescence microscope light source apparatus and a fluorescence microscope capable of obtaining high-luminance light in a wavelength of 500 to 550 nm and having reduced background noise when a sample is observed. The fluorescence microscope light source apparatus to be installed in a fluorescence microscope including an illumination light bandpass filter includes: a laser diode that emits blue light as excitation light; a phosphor that converts the excitation light from the laser diode into illumination fluorescence with a wavelength region of 500 to 550 nm; an optical system that extracts the illumination fluorescence from the phosphor; a first condenser lens that condenses the excitation light onto the phosphor; a light guide body having one end face on which the illumination fluorescence is incident and the other end face from which the illumination fluorescence exits; and a second condenser lens that condenses the illumination fluorescence onto the one end face of the light guide body. A band-elimination filter that blocks or attenuates light, out of the illumination fluorescence, in a wavelength region including a transmission maximum wavelength and including no transmission minimum wavelength in the illumination light bandpass filter is provided on a light path of the illumination fluorescence. 1. A fluorescence microscope light source apparatus to be installed in a fluorescence microscope which includes an illumination light bandpass filter and in which a sample is illuminated with light with a wavelength of 500 to 550 nm having transmitted through the illumination light bandpass filter , the fluorescence microscope light source apparatus comprising:a laser diode configured to emit blue light as excitation light;a phosphor configured to convert the excitation light emitted by the laser diode into illumination fluorescence with a wavelength region of 500 to 550 nm;an optical system configured to extract the illumination fluorescence emitted ...

SPECTROMETER

A spectrometer includes a light conduit configured to align scattered light scattered in a target by light output from a light source into a collimated beam, and a beam block configured to restrict an angle of the scattered light and detect the scattered light via the light conduit or the beam block through a filter array and a detector, thereby achieving miniaturization in a pen type or a flat plate shape while maintaining a spectral characteristic. 1. A spectrometer comprising:a light source;a beam block configured to restrict an angle of a light scattered by a target;a filter array comprising filters configured to transmit a predetermined wavelength band of the light restricted by the beam block; anda detector array comprising detector cells configured to detect the light transmitted through the filter.2. The spectrometer of claim 1 ,wherein the light source is disposed on a back surface of the detector array, andwherein each of the detector cells and the filters comprises a through hole through which the light emitted from the light source passes.3. The spectrometer of claim 1 , wherein the beam block comprises a block end configured to define openings and a support configured to support the block end.4. The spectrometer of claim 3 , wherein a restriction angle θc restricted by the beam block satisfies a following condition:{'br': None, 'i': bh=w−a', 'c, '*tan θ'}wherein bh is a width of the block end, w is a width of the detector cell, and a is distance between the beam block and the target.5. The spectrometer of claim 3 , wherein the openings correspond to the filters with one-to-one correspondence.6. The spectrometer of claim 3 , wherein each of the openings is smaller than an area of the filter.7. The spectrometer of claim 3 , wherein the support has a barrier rib structure that prevents the light scattered by the target from being incident onto a neighboring cell that is disposed adjacent to the detector cells.8. The spectrometer of claim 1 , wherein the ...

Systems for Detecting Vascular and Arterial Disease in Asymptomatic Patients and Related Methods

Multispectral imaging systems are provided including an illumination control module configured to image a sample and provide an imaging output sequence including images and data; a multi-spectral physiologic visualization (MSPV) module, a peripheral oxygen saturation (SpO) module and a physiologic status parameters (PSP) module configured to receive the imaging output sequence of the illumination control module simultaneously. The MSPV module is configured to provide real-time blood flow distribution visualization of a field of view (FOV) responsive to the received imaging output sequence. The SpOmodule is configured to provide real-time SpOinformation at a tissue surface level for the FOV responsive to the received imaging and output sequence. The PSP module is configured to derive status parameters in real-time from metadata associated with the received imaging and output sequence of the FOV. The system further includes a processing engine configured to integrate and analyze the real-time blood flow distribution visualization, SpOinformation and derived status parameters. 1. A multispectral imaging system comprising:an illumination control module configured to image a sample and provide an imaging output sequence including images and data;{'sub': '2', 'a multi-spectral physiologic visualization (MSPV) module, a peripheral oxygen saturation (SpO) module and a physiologic status parameters (PSP) module configured to receive the imaging output sequence of the illumination control module simultaneously,'}wherein the MSPV module is configured to provide real-time blood flow distribution visualization of a field of view (FOV) responsive to the received imaging output sequence;{'sub': 2', '2, 'wherein the SpOmodule is configured to provide real-time SpOinformation at a tissue surface level for the FOV responsive to the received imaging and output sequence; and'}wherein the PSP module is configured to derive status parameters in real-time from metadata associated with the ...

MANUFACTORING PROCESS FOR INTEGRATED COMPUTATIONAL ELEMENTS

Disclosed are methods of fabricating an integrated computational element for use in an optical computing device. One method includes providing a substrate that has a first surface and a second surface substantially opposite the first surface, depositing multiple optical thin films on the first and second surfaces of the substrate via a thin film deposition process, and thereby generating a multilayer film stack device, cleaving the substrate to produce at least two optical thin film stacks, and securing one or more of the at least two optical thin film stacks to a secondary optical element for use as an integrated computational element (ICE). 1. A method , comprising:providing a substrate;depositing multiple optical thin films on a surface of the substrate via a thin film deposition process and thereby generating an optical thin film stack;removing at least a portion of the substrate from the optical thin film stack; andsecuring the optical thin film stack to a secondary optical element for use as an integrated computational element (ICE).2. The method of claim 1 , wherein the substrate is planar.3. The method of claim 2 , wherein the substrate is at least one of mica claim 2 , pyrolitic carbon claim 2 , graphite claim 2 , and graphene.4. The method of claim 1 , wherein depositing the multiple optical thin films on the substrate is preceded by preparing the surface of the substrate either chemically or mechanically.5. The method of claim 1 , wherein securing the optical thin film stack to the secondary optical element is preceded by subdividing the optical thin film stack into multiple optical thin film stacks.6. The method of claim 1 , wherein removing the at least a portion of the substrate from the optical thin film stack is preceded by securing the optical thin film stack to the secondary optical element.7. The method of claim 6 , further comprising chemically reacting the substrate and thereby melting a target surface of the secondary optical element to bond ...

Self-calibration method for tuneable fabry-perot cavity and spectrum acquisition device having self-calibration function

A filter is irradiated with incident light, and calibrated light with a fixed wavelength is obtained after the incident light is transmitted through a calibration filter film on the filter; the calibrated light is selected and transmitted via the Fabry-Perot cavity, and selected light is obtained after the calibrated light is transmitted through the Fabry-Perot cavity; an image chip is irradiated with the selected light for imaging, and an output signal is obtained. When the selected wavelength of the tuneable Fabry-Perot cavity matches the wavelength of the calibrated light transmitted by the calibration filter film at a certain position, light at the position is selected and reaches the imaging chip, and the output signal of the imaging chip at the corresponding position can be used as a detection signal for self-calibration, which does not affect normal imaging at other positions on the filter besides the calibration filter film.

SPECTRAL IMAGING SYSTEM FOR REMOTE AND NONINVASIVE DETECTION OF TARGET SUBSTANCES USING SPECTRAL FILTER ARRAYS AND IMAGE CAPTURE ARRAYS

An approach to noninvasively and remotely detect the presence, location, and/or quantity of a target substance in a scene via a spectral imaging system comprising a spectral filter array and image capture array. For a chosen target substance, a spectral filter array is provided that is sensitive to selected wavelengths characterizing the electromagnetic spectrum of the target substance. Elements of the image capture array are optically aligned with elements of the spectral filter array to simultaneously capture spectrally filtered images. These filtered images identify the spectrum of the target substance. Program instructions analyze the acquired images to compute information about the target substance throughout the scene. A color-coded output image may be displayed on a smartphone or computing device to indicate spatial and quantitative information about the detected target substance. The system desirably includes a library of interchangeable spectral filter arrays, each sensitive to one or more target substances. 15-. (canceled)6. A method of providing an imaging system for detecting a target substance in a scene , comprising the steps of:a) providing spectral information for a target substance;b) using the spectral information to associate a plurality of specific bandwidth portions of the electromagnetic spectrum with spectral characteristics of the target substance; i) an image capture array comprising at least two image capturing elements, each image capturing element capable of independently capturing an image of the scene;', 'ii) a filter array comprising a plurality of filter elements, each sensitive to a pre-determined specific bandwidth portion, and wherein the filter elements are each aligned with a corresponding camera element of the image capture array in a manner such that the image capture array captures image information for a plurality of independent spectrally filtered images;', 'iii) program instructions that use the captured image information ...

Optical measurement method and system

An optical measurement method and system. The system includes, and method applies, a light source, a beamsplitter, at least one filter, a output photodetector for acquiring data of a sample, and a correction photodetector for correcting and maintaining output intensity from the light source. The filter is located between the light source and the correction photodetector for normalizing the spectrum of the input light being applied to input light correction. The filter may be incorporated into the beamsplitter and may be tuned to filter light from the light source for providing non-zero transmission of light with a near-zero gradient for wavelengths in a portion of the spectrum of the input light being applied to the sample and read by the output photodetector. The filter may also or alternatively be located downstream of the beamsplitter to correct for wavelength sensitivity of the correction photodetector.

Hybrid spectral imager

The invention discloses a hybrid and scanning/snapshot spectral imager operating in both staring-spectral scanning and video snapshot spectral imaging modes. Snapshot spectral imaging operation at a set of selectable critical spectral bands comprise the basis for a machine learning-based estimation and video-rate display of a full hyperspectral cube, without compromising spatial resolution. Operating in the staring-type scanning mode, the disclosed hybrid spectral imager acquires sets of narrow band images at a given tuning step and for a plurality of tuning steps until completing a hyperspectral cube sampling. Scanning operation may be used for optimally configuring snapshot operation, such that redundant information present in the collected spectra is discarded. The disclosed hybrid spectral imager includes embodiments susceptible for miniaturization and low power operation, allowing for their integration into mobile phone and computer platforms. The invention is intended to address applications comprising, at least in part, nondestructive testing, real-time spectral and chemical mapping, noninvasive diagnosis and spectral photography.

OPTICAL FILTER AND SPECTROMETER

An optical assembly is disclosed including two laterally variable bandpass optical filters stacked at a fixed distance from each other, so that the upstream filter functions as a spatial filter for the downstream filter. The lateral displacement may cause a suppression of the Oblique beam when transmission passbands at impinging locations of the oblique beam onto the upstream and downstream filters do not overlap. A photodetector array may be disposed downstream of the downstream filter. The optical assembly may be coupled via a variety of optical conduits or optical fibers for spectroscopic measurements of a flowing sample. 132-. (canceled)33. An assembly comprising:a light source configured to provide illuminating light;a cell comprising a cavity configured to receive and contain a sample in fluid form while transmitting the illuminating light through the cell;an optical assembly that includes an optical filter; and 'wherein the signal light is emitted by the sample in fluid form while the sample in fluid form is in the cavity.', 'a sensor, coupled to the optical filter, configured to selectively detect signal light propagated through the optical filter,'}34. The assembly of claim 33 , wherein the cell is an elongated optical cell.35. The assembly of claim 33 , wherein the cell is a cuvette.36. The assembly of claim 33 , wherein the cell extends parallel to a direction that is transversal to an optical path of the illuminating light.37. The assembly of claim 33 , wherein the cell further comprises an inlet configured to receive the sample in fluid form claim 33 , andwherein the cavity is in fluid communication with the inlet.38. The assembly of claim 33 , wherein the cavity is defined by a substantially transparent sidewall.39. The assembly of claim 38 , wherein the illuminating light is transmitted through the substantially transparent sidewall.40. The assembly of claim 38 , wherein the signal light is transmitted through the substantially transparent sidewall.41 ...

TIP-ENHANCED RAMAN SPECTROSCOPE SYSTEM

The present disclosure provides a tip-enhanced Raman spectroscope system. The system includes a laser emitting unit, a laser excitation unit, a first dichroic beam splitter, a first Raman spectrometer, and a confocal detecting unit. The laser excitation unit includes a sample stage and a first scanning probe. The sample stage is configured to have a sample disposed thereon such that a first incident laser beam emitted from the laser emitting unit is transmitted to the sample to excite first scattered light. The first dichroic beam splitter is configured to split a first Raman scattered light from the first Rayleigh scattered light. The first Raman spectrometer is disposed on a first Raman optical path of the first Raman scattered light. The confocal detecting unit is disposed on a first Rayleigh optical path of the first Rayleigh scattered light to image the sample. 1. A tip-enhanced Raman spectroscope system comprising:a laser emitting unit; a sample stage configured to have a sample disposed thereon such that a first incident laser beam emitted from the laser emitting unit is transmitted to the sample to excite first scattered light, comprising both first Raman scattered light and first Rayleigh scattered light, from the sample; and', 'a first scanning probe comprising a first apex positioned at a first focus center of the first incident laser beam to enhance the first Raman scattered light;, 'a laser excitation unit comprisinga first dichroic beam splitter configured to split the first Raman scattered light from the first Rayleigh scattered light;a first Raman spectrometer disposed on a first Raman optical path of the first Raman scattered light split by the first dichroic beam splitter; anda confocal detecting unit disposed on a first Rayleigh optical path of the first Rayleigh scattered light split by the first dichroic beam splitter to image the sample.2. The system of claim 1 , further comprising:a first prism disposed on an optical path of a laser beam ...

LUMINESCENCE BASED FIBER OPTIC PROBE FOR THE DETECTION OF RARE EARTH ELEMENTS

The disclosure relates to an apparatus, method and process for detecting rare earth elements. The system includes an LED powered by a first power source and a focusing lens in optical communication with the LED. A shortpass filter is in optical communication with the focusing lens; and a fiber bifurcated cable in optical communication with the shortpass filter. The system includes a probe tip in optical communication with the fiber bifurcated cable and a sample; a first aspheric lens in optical communication with the fiber bifurcated cable. A longpass filter is in optical communication with the first aspheric lens and a second aspheric lens in optical communication with the longpass filter. The system includes a spectrometer connected to a power source, where the spectrometer is in optical communication with the second aspheric lens. 1. An apparatus for detection of rare earth elements comprising:A light source providing one or more luminescent signals;a shortpass filter that reduces low energy emissions from the light source, the shortpass filter in optical communication with at least the light source;a fiber bifurcated cable in optical communication with at least the shortpass filter and a sample, the fiber bifurcated cable providing and receiving one or more luminescent signals;a longpass filter in optical communication with the fiber bifurcated cable receiving the one or more luminescent signals; anda longpass filter is in optical communication with a spectrometer which analyzes the one or more luminescent signals.2. (canceled)3. The apparatus of the light source is an LED light source having a wavelength of about 400 nm or shorter.4. The apparatus of wherein the LED light source has a wavelength of about 365 nm and an output between about 1.15 W and about 1.4 W.5. The apparatus of further comprising a focusing lens in optical communication with the light source and the shortpass filter.6. The apparatus of wherein the shortpass filter comprises a shortpass ...

Non-dispersive multi-channel sensor assembly having refractive and/or diffractive beamsplitter

A non-dispersive multi-channel radiation sensor assembly includes a beamsplitter assembly, a first band-pass filter, which has a predefined first bandwidth and has a transmission maximum at a predefined first useful-signal wavelength, a first measurement-radiation useful-signal sensor, which is arranged downstream of the first band-pass filter in the beam path, a second band-pass filter, which has a transmission maximum at a predefined first reference-signal wavelength, a first measurement-radiation reference-signal sensor, which is arranged downstream of the second band-pass filter in the beam path. The beamsplitter assembly has a first irradiation region and a second irradiation region, in which irradiation regions the beamsplitter assembly is irradiated with measurement radiation. The irradiation regions are optically designed in such a way that the beamsplitter assembly deflects, in the first irradiation region, a first part of the measurement radiation onto the first band-pass filter and a second part of the measurement radiation onto the second band-pass filter.

Spectral camera control device, spectral camera control program, spectral camera control system, aircraft equipped with said system, and spectral image capturing method

This spectral camera control device is installed together with a spectral camera 3 provided with a liquid crystal tunable filter 33 in an aircraft 1 capable of stationary flight, and causes the spectral camera 3 to capture an image in a snapshot mode each time the transmission wavelength of the liquid crystal tunable filter 33 is switched while the aircraft 1 is in stationary flight.

FTIR Spectrometer with Optical Filter for Low Level Gas Detection such as Formaldehyde and Ethylene Oxide

A gas analysis system with an FTIR spectrometer preferably utilizes a long path gas cell, a narrow band detector, and an optical filter that narrows the detection region. The interferograms are further prevent baseline drift and analyze the resultant spectra. 1. A Fourier transform infrared spectrometry system , comprising:a source for generating light;an interferometer for receiving the light;a sample cell containing a gas sample;a narrowband detector for detecting the light after passing through the sample gas; anda bandpass filter for filtering light prior to being detected the detector, with the interferometer providing resolution within a bandpass of the bandpass filter.2. The system of claim 1 , wherein the detector is a MCT detector.3. The system of claim 1 , wherein the detector has at least an 8 μm cutoff.4. The system of claim 1 , wherein the detector has at least a 5 μm cutoff.5. The system of claim 1 , wherein the optical filter has a bandpass of less than 450 cm.6. The system of claim 1 , wherein the optical filter has a bandpass of less than 300 cm.7. The system of claim 1 , wherein peak detectivity “D*” of the detector is higher than 1×10.8. The system of claim 1 , further comprising a controller detecting an output of the detector as the interferometer is scanned and processing interferograms within the bandpass of the bandpass filter at two resolutions and using the interferograms processed at a lower resolution as a background for interferograms processed at a higher resolution.9. The system of claim 8 , wherein the controller employs cosine apodization.10. The system of claim 8 , wherein the controller adds a filter spectrum of the filter into a regression analysis.11. A spectrometry method claim 8 , comprising:analyzing a gas sample with a Fourier transform infrared spectrometer;detecting the light after passing through the sample gas; andfiltering light prior to being detected.12. The method of claim 11 , wherein the light is detected with a MCT ...

SYSTEMS, DEVICES, AND METHODS FOR TIME-RESOLVED FLUORESCENT SPECTROSCOPY

Provided herein are devices, systems, and methods for characterizing a biological sample in vivo or ex vivo in real-time using time-resolved spectroscopy. A light source generates a light pulse or continuous light wave and excites the biological sample, inducing a responsive fluorescent signal. A demultiplexer splits the signal into spectral bands and a time delay is applied to the spectral bands so as to capture data with a detector from multiple spectral bands from a single excitation pulse. The biological sample is characterized by analyzing the fluorescence intensity magnitude and/or decay of the spectral bands. The sample may comprise one or more exogenous or endogenous fluorophore. The device may be a two-piece probe with a detachable, disposable distal end. The systems may combine fluorescence spectroscopy with other optical spectroscopy or imaging modalities. The light pulse may be focused at a single focal point or scanned or patterned across an area. 113.-. (canceled)14. A system for classifying or characterizing a biological sample , the system comprising:(a) a first transmission element configured to convey optical excitation signals;(b) a second transmission element configured to receive the optical excitation signals from the first transmission element and convey the optical excitation signals to the biological sample, wherein the biological sample generates responsive optical signals in response to the optical excitation signals and the responsive optical signals are received by the second transmission element;(c) a signal collection element coupled to the second transmission element, wherein the signal collection element comprises a single pixel detector and a filter wheel comprising a plurality of spectral filters, wherein the signal collection element is configured to receive the responsive optical signals from the second transmission element and temporally split the responsive optical signals into a plurality of temporally distinct spectral bands ...

APERTURELESS SPECTROMETER

A hard apertureless spectrometer includes a housing, a collimator configured to collimate light provided from a soft aperture of a target, a diffraction grating configured to spectroscopically analyze the collimated light, a condenser configured to condense the spectroscopically analyzed light, and a photodetector configured to receive the condensed light output from the condenser and detect a target characteristic. 1. A hard apertureless spectrometer comprising:a housing;a collimator configured to collimate light provided from a soft aperture of a target;a diffraction grating configured to spectroscopically analyze the collimated light;a condenser configured to condense the spectroscopically analyzed light; anda photodetector configured to receive the condensed light output from the condenser and detect a target characteristic.2. The hard apertureless spectrometer of claim 1 , wherein the soft aperture is formed by providing excitation light to the target.3. The hard apertureless spectrometer of claim 1 , further comprising a light source configured to provide excitation light to the target to form the soft aperture.4. The hard apertureless spectrometer of claim 3 , wherein the light source is located outside the hard apertureless spectrometer.5. The hard apertureless spectrometer of claim 1 , wherein the collimator claim 1 , the diffraction grating claim 1 , the condenser claim 1 , and the photodetector are housed in the housing.6. The hard apertureless spectrometer of claim 1 , wherein the collimator is located outside the housing.7. The hard apertureless spectrometer of claim 1 , further comprising a beam delivery device which is configured to provide light provided from the soft aperture of the target to the collimator and includes a plurality of lenses.8. The hard apertureless spectrometer of claim 1 , wherein:the light source is located inside the hard apertureless spectrometer;the hard apertureless spectrometer further includes a dichroic mirror; andthe ...

Device for conducting radiation, a photodetector arrangement, and a method for spatially resolved spectral analysis

The invention relates to a device for conducting radiation, a photodetector arrangement, and a method for spatially resolved spectral analysis.

SYSTEM AND METHOD FOR DETECTING TARGET MATERIALS USING A VIS-NIR DETECTOR

The present disclosure provides systems and methods for determining the presence of a target material in a sample. In general terms, the system and method disclosed herein provide collecting interacted photons from a sample having a target material. The interacted photons are passed through a tunable filter to a VIS-NIR detector where the VIS-NIR detector generates a VIS-NIR hyperspectral image representative of the filtered interacted photons. The hyperspectral image of the filtered interacted photons is analyzed by comparing the hyperspectral image of the filtered interacted photons to known hyperspectral images to identify the presence of a target material in a sample. The systems and methods disclosed herein provide easy identification of the presence of a target material in a sample. 1. A system for identifying a target material in a sample , the system comprising:a first collection optic configured to collect a plurality of interacted photons that have interacted with the sample;a tunable filter configured to filter a first plurality of interacted photons collected from the first collection optic into a plurality of wavelengths to generate filtered interacted photons;a VIS-NIR detector configured to detect the filtered interacted photons, wherein the VIS-NIR detector generates a VIS-NIR hyperspectral image representation of the filtered interacted photons; anda processor configured to analyze the VIS-NIR hyperspectral image of the filtered interacted photons by comparing the VIS-NIR hyperspectral image of the filtered interacted photons to a database of known VIS-NIR hyperspectral images in order to identify the presence of the target material.2. The system of claim 1 , further comprising:a second collection optic configured to collect a second plurality of interacted photons; anda RGB detector configured to detect the second plurality of interacted photons collected from the second collection optic, wherein the RGB detector is configured to generate a RGB ...

System and method for detecting target materials using a vis-nir detector

The present disclosure provides systems and methods for determining the presence of a target material in a sample. In general terms, the system and method disclosed herein provide collecting interacted photons from a sample having a target material. The interacted photons are passed through a tunable filter to a VIS-NIR detector where the VIS-NIR detector generates a VIS-NIR hyperspectral image representative of the filtered interacted photons. The hyperspectral image of the filtered interacted photons is analyzed by comparing the hyperspectral image of the filtered interacted phtons to known hyperspectral images to identify the presence of a target material in a sample. The systems and methods disclosed herein provide easy identification of the presence of a target material in a sample.

Compact spectrometer system for non-invasive measurement of absorption and transmission spectra in biological tissue samples

A spectrometer includes an illuminating section; a receiving section configured to detect radiation reflected from an object including an optically inhomogeneous scattering medium; a hardware section configured to obtain a solution of an inverse problem to reconstruct an absorption spectrum of the optically inhomogeneous scattering medium, wherein the illuminating section includes at least one light-emitting diode source, a radiation spectral curve of which is divided, by at least two spectral filters having different spectral transmission curves, into at least two spectral regions, to form an equivalent radiation spectrum from at least two spectral sources, and wherein the hardware section applies the solution of the inverse problem based on information about a spectral content of the radiation of the illuminating section, a signal obtained in a form of a response from the optically inhomogeneous scattering medium, and a spectral sensitivity curve of the receiving section.

Multispectral camera using zero-mode channel

A multispectral imaging system and method in which the zero-mode channel is used to provide imaging of any of a variety of optical properties. In one example an imaging method includes spectrally dispersing received electromagnetic radiation into its spectral components with a dispersive element to produce spectrally dispersed electromagnetic radiation, transmitting the electromagnetic radiation through the dispersive element to produce non-dispersed electromagnetic radiation corresponding to a zero order diffraction mode of the dispersive element, imaging the non-dispersed electromagnetic radiation to produce a zero-mode image, and simultaneously imaging the spectrally dispersed electromagnetic radiation to produce a spectral image.

VIEWING AND PROCESSING MULTISPECTRAL IMAGES

Multispectral images, including ultraviolet light and its interactions with ultraviolet light-interactive compounds, can be captured, processed, and represented to a user. Ultraviolet-light related information can be conveniently provided to a user to allow the user to have awareness of UV characteristics and the user's risk to UV exposure. 1. A mobile device comprising:a camera sensor system capable of capturing a multispectral image, comprising representations of wavelengths of light in an infrared spectrum, a visible spectrum and an ultraviolet spectrum, at approximately the same time;a computer system coupled to the camera sensor and configured to process the multispectral image to identify an area of interest by detecting the presence of skin in the representations of infrared light or visible light in the multispectral image and further configured to process the multispectral image to identify a subset of the area of interest by comparing the representations of ultraviolet light in the portion of the multispectral image in the area of interest to a predetermined-ultraviolet-light threshold;wherein the computer system is further configured to render a display image for display from the multispectral image;wherein the rendering indicates whether the subset of the area of interest lacks ultraviolet protection by identifying the subset of the area of interest with a false color on top of the representation of wavelengths of light in the visible spectrum; anda display coupled to the computer system processor and operable to display the rendered display image at approximately the same time the multispectral image is captured.21. The mobile device of , wherein the predetermined-ultraviolet-light threshold is based on a ultraviolet reflectivity of a topical compound comprising sunscreen.31. The mobile device of , wherein the predetermined-ultraviolet-light threshold is based on a ultraviolet reflectivity of a topical compound or a relative-ultraviolet-light threshold ...

Gas imaging system

A spectral imaging system configured to obtain spectral measurements in a plurality of spectral regions is described herein. The spectral imaging system comprises at least one optical detecting unit having a spectral response corresponding to a plurality of absorption peaks of a target chemical species. In an embodiment, the optical detecting unit may comprise an optical detector array, and one or more optical filters configured to selectively pass light in a spectral range, wherein a convolution of the responsivity of the optical detector array and the transmission spectrum of the one or more optical filters has a first peak in mid-wave infrared spectral region between 3-4 microns corresponding to a first absorption peak of methane and a second peak in a long-wave infrared spectral region between 6-8 microns corresponding to a second absorption peak of methane.

COMPACT LIGHT SENSOR

Provided are methods and systems for concurrent imaging at multiple wavelengths. In one aspect, a hyperspectral/multispectral imaging device includes a lens configured to receive light backscattered by an object, a plurality of photo-sensors, a plurality of bandpass filters covering respective photo-sensors, where each bandpass filter is configured to allow a different respective spectral band to pass through the filter, and a plurality of beam splitters in optical communication with the lens and the photo-sensors, where each beam splitter splits the light received by the lens into a plurality of optical paths, each path configured to direct light to a corresponding photo-sensor through the bandpass filter corresponding to the respective photo-sensor. 1. An imaging device , comprising:a lens disposed along an optical axis and configured to receive light;a plurality of photo-sensors;an optical path assembly comprising a plurality of beam splitters in optical communication with the lens and the plurality of photo-sensors; and each respective beam splitter in the plurality of beam splitters is configured to split the light received by the lens into at least two optical paths,', 'a first beam splitter in the plurality of beam splitters is in direct optical communication with the lens and a second beam splitter in the plurality of beam splitters is in indirect optical communication with the lens through the first beam splitter, and', 'the plurality of beam splitters collectively split light received by the lens into a plurality of optical paths, wherein each respective optical path in the plurality of optical paths is configured to direct light to a corresponding photo-sensor in the plurality of photo-sensors through the respective multi-bandpass filter covering the corresponding photo-sensor., 'a plurality of multi-bandpass filters, wherein each respective multi-bandpass filter in the plurality of multi-bandpass filters covers a corresponding photo-sensor in the ...

Optical spectrometer configuration including spatially variable filter (svf)

A system comprising a light source configured to illuminate a sample under measurement. The system includes a detector configured to receive reflected light from the sample, and the detector generates a signal representing the reflected light. A spatially variable filter (SVF) is positioned in the optical path. The SVF is configured to have spectral properties that vary as a function of illuminated position on the SVF.

A MULTI-ORDER DIFFRACTIVE FRESNEL LENS (MOD-DFL) AND SYSTEMS THAT INCORPORATE THE MOD-DFL

A multi-order diffractive Fresnel lens (MOD-DFL) that is suitable for use in a space telescope for studying transiting earth-like planets of distant stars is provided. The MOD-DFL may comprise a MOD-DFL array comprising a plurality of MOD-DFL segments that are secured to a mounting surface of a deployment device, such as a balloon, for example, in a preselected arrangement to form the MOD-DFL. An array telescope may be formed of an array of deployment devices, such as an array of balloons, for example, each having a MOD-DFL secured to a mounting surface of the respective deployment device, an optics system disposed inside of the respective deployment device, and a camera disposed inside of the respective deployment device. Each MOD-DFL comprises a plurality of MOD-DFL segments arranged in a preselected arrangement to form the respective MOD-DFL. 1. A multi-order diffractive Fresnel lens (MOD-DFL) comprising:an optical substrate having a bottom surface and a top surface; anda surface profile formed in the top surface, the surface profile being radially symmetric relative to a center axis of the MOD DFL, the surface profile comprising N transitions in the top surface at N radial positions, respectively, from the center axis, where N is a positive integer that is greater than or equal to 2, each of the transitions occurring at a respective zone boundary and having a step height in a direction parallel to the center axis.2. The MOD-DFL of claim 1 , wherein the surface profile is a continuous curve from the center axis to a closest of the N transitions to the center axis.3. The MOD-DFL of claim 2 , wherein the continuous curve is aspherical in shape.4. The MOD-DFL of claim 1 , wherein the MOD-DFL is an Morder MOD-DFL claim 1 , where M is a positive integer that is greater than or equal to 250.5. The MOD-DFL of claim 1 , wherein the step height is the same for all of the transitions and is greater than or equal to 0.25 millimeters (mm).6. The MOD-DFL of claim 1 , wherein ...

Hand-held micro-raman based detection instrument and method of detection

A Raman spectroscopy based system and method for examination and interrogation provides a method for rapid and cost effective screening of various protein-based compounds such as bacteria, virus, drugs, and tissue abnormalities. A hand-held spectroscope includes a laser and optical train for generating a Raman-shifting sample signal, signal processing and identification algorithms for signal conditioning and target detection with combinations of ultra-high resolution micro-filters and an imaging detector array to provide specific analysis of target spectral peaks within discrete spectral bands associated with a target pathogen.

SPECTROMETER MODULE

A spectrometer module comprising a plurality of separate electronic circuit modules is disclosed. Each separate electronic module comprises an integrated sensor circuit including a light sensitive area occupying part of an area of the integrated sensor circuit, the integrated sensor circuit being arranged to detect incident light. In one aspect, the plurality of separate electronic circuit modules includes a group of adjacent electronic circuit modules. The light sensitive areas of the electronic circuit modules in the group are so arranged on the respective integrated sensor circuits that the group of adjacent electronic circuit modules is mounted so that the light sensitive areas thereof are arranged in vicinity to each other. The spectrometer module includes an optical module, which is common to said plurality of separate electronic circuit modules and arranged to direct incident light towards the light sensitive areas of each of said electronic circuit modules. 1. A spectrometer module , comprising:a plurality of separate electronic circuit modules, each of the electronic circuit modules comprising an integrated sensor circuit including a light sensitive area occupying part of an area of the integrated sensor circuit, the integrated sensor circuit being arranged to detect incident light within a set wavelength interval, wherein the plurality of separate electronic circuit modules include a group of adjacent electronic circuit modules and the light sensitive areas of the electronic circuit modules in the group are so arranged on the respective integrated sensor circuits that the group of adjacent electronic circuit modules is mounted so that the light sensitive areas thereof are arranged in vicinity to each other; andan optical module, which is common to the plurality of separate electronic circuit modules and arranged to direct incident light towards the light sensitive areas of each of the electronic circuit modules.2. The spectrometer module according to claim ...

LIGHT FILTER AND SPECTROMETER INCLUDING THE LIGHT FILTER

A light filter includes a plurality of spectrum modulation portions, each having a different thicknesses or a different mixing ratio of materials thereof. Each of the plurality of spectrum modulation portions has a different transmittance spectrum. 1. A light filter comprising:a plurality of spectrum modulation portions,wherein each of the plurality of spectrum modulation portions has a transmittance spectrum different from a transmittance spectrum of each other of the plurality of spectrum modulation portions; andat least one of a thickness and a material composition of each of the plurality of spectrum modulation portions is different from the at least one of the thickness and the material composition of each other of the plurality of spectrum modulation portions.2. The light filter of claim 1 , wherein:the thickness of each of the plurality of spectrum modulation portions is different than the thickness of each other of the plurality of spectrum modulation portions; ora ratio of a first material to a second material present in each of the plurality of spectrum modulation portions is different than a ratio of the first material to the second material present in each other of the plurality of spectrum modulation portions.3. The light filter of claim 1 , wherein the plurality of spectrum modulation portions are arranged in an array form.4. The light filter of claim 1 , wherein the transmittance spectrum of each of the plurality of spectrum modulation portions is non-linear with respect to the transmittance spectrum of each other of the plurality of spectrum modulation portions.5. The light filter of claim 1 , wherein the transmittance spectrum of each of the plurality of spectrum modulation portions is not parallel to the transmittance spectrum of each other of the plurality of spectrum modulation portions.6. The light filter of claim 1 , wherein the transmittance spectrum of each of the plurality of spectrum modulation portions does not intersect with the ...

Mobile-based spectrum imaging device and method for controlling same

The present invention provides a mobile-based spectrum imaging device and a method for controlling the same. A mobile-based spectrum imaging device according to an embodiment of the present invention may comprise: an optical fiber for emitting, in a beam form, light which has been collected from a light source; a linear filter which is movably installed, divides the light emitted from the optical fiber into particular wavelength bands, and makes the divided light have a wavelength band changing according to the incidence location of the light; and a control unit for controlling the location of the linear filter such that the location of incident light is changed on the linear filter.

SPECTRAL IMAGING DEVICE

The present invention provides a spectral imaging device characterized in that N images are captured with ambient light, and spectra can be obtained from the captured N images for spectral analysis. In particular, a filter device is employed to divide a spectral range of the ambient light into N spectral bands, and each capture corresponds to one spectral band. 1. A spectral imaging device , comprising:a light source;an object;an image sensor for capturing images of the object; anda filter device being disposed between the object and the image sensor, the object reflecting the light source to pass through the filter device and to irradiate the image sensor, wherein the filter device comprises:a first filter having a plurality of first filter structures; anda second filter having a plurality of second filter structures;wherein during a period of time the image sensor continuously captures N images of the object over a spectral range that is divided into N spectral bands, and each captured image corresponds to one of the spectral bands; andwherein during the period of time the plurality of first filter structures and/or the plurality of second filter structures are moved, so that each of the plurality of spectral bands is an intersection of a passband of one of the first filter structures and a passband of one of the second filter structures.2. The spectral imaging device as recited in claim 1 , wherein the light source is an ambient light.3. The spectral imaging device as recited in claim 1 , further comprising a lens module disposed between the object and the filter device.4. The spectral imaging device as recited in claim 1 , further comprising a lens module disposed between the filter device and the image sensor.5. The spectral imaging device as recited in claim 1 , wherein the plurality of first filter structures are a plurality of first filter coatings claim 1 , and the plurality of second filter structures are a plurality of second filter coatings.6. The ...

Hyperspectral imaging in a light deficient environment

An endoscopic imaging system for use in a light deficient environment includes an imaging device having a tube, one or more image sensors, and a lens assembly including at least one optical elements that corresponds to the one or more image sensors. The endoscopic system includes a display for a user to visualize a scene and an image signal processing controller. The endoscopic system includes a light engine having an illumination source generating one or more pulses of electromagnetic radiation and a lumen transmitting one or more pulses of electromagnetic radiation to a distal tip of an endoscope.

Compact Optical Spectrometer

A spectrometer employs multiple filters having complex filter spectra that can be generated robustly from received light over short optical path lengths. The complex filter spectra provide data that can be converted to a spectrum of the received light using compressed sensing techniques. The result is a more compact, easily manufactured spectrometer.

Hyperspectral imaging with tool tracking in a light deficient environment

An endoscopic imaging system for use in a light deficient environment includes an imaging device having a tube, one or more image sensors, and a lens assembly including at least one optical elements that corresponds to the one or more image sensors. The endoscopic system includes a display for a user to visualize a scene and an image signal processing controller. The endoscopic system includes a light engine having an illumination source generating one or more pulses of electromagnetic radiation and a lumen transmitting one or more pulses of electromagnetic radiation to a distal tip of an endoscope.

Sloped structure, method for manufacturing sloped structure, and spectrum sensor

A method for manufacturing a sloped structure is disclosed. The method includes the steps of: (a) forming a sacrificial film above a substrate; (b) forming a first film above the sacrificial film, the first film having a first portion connected to the substrate, a second portion located above the sacrificial film, a third portion located between the first portion and the second portion, and a thin region in a portion of the third portion or in a boundary section between the second portion and the third portion and having a thickness smaller than the first portion; (c) removing the sacrificial film; and (d) bending the first film in the thin region, after the step (c), thereby sloping the second portion of the first film with respect to the substrate.

OPTICAL FILTER AND SPECTROMETER

An optical filter is disclosed including two laterally variable bandpass filters stacked at a fixed distance from each other, so that the upstream filter functions as a spatial filter for the downstream filter. This happens because an oblique beam transmitted by the upstream filter is displaced laterally when impinging on the downstream filter. The lateral displacement causes a suppression of the oblique beam when transmission passbands at impinging locations of the oblique beam onto the upstream and downstream filters do not overlap. 1. An optical filter , comprising:an upstream laterally variable bandpass optical filter; anda downstream laterally variable bandpass optical filter;wherein the downstream laterally variable bandpass optical filter is sequentially disposed downstream of the upstream variable bandpass optical filter and separated by a distance L along an optical path of an optical beam,wherein the upstream and downstream laterally variable bandpass optical filters each have a bandpass center wavelength that gradually varies in a mutually coordinated fashion along a common first direction transversal to the optical path, andwherein a dependence of spectral selectivity of the optical filter on a degree of collimation of the optical beam is less than a corresponding dependence of spectral selectivity of the downstream laterally variable bandpass optical filter on the degree of collimation of the optical beam.2. The optical filter of claim 1 , wherein the center wavelengths of the upstream and downstream filters are monotonically increasing in the first direction.3. The optical filter of claim 2 , wherein the center wavelengths of the upstream and downstream filters are non-linearly increasing in the first direction.4. The optical filter of claim 2 , wherein the center wavelengths of the upstream and downstream filters have a substantially identical dependence of the bandpass center wavelength on an x-coordinate along the first direction.5. The optical ...

Spectral separation component without a visible ghost image

A spectral splitting component is provided, having two faces, a planar front face comprising a dichroic treatment and a back face. It is intended to be placed downstream of a convergent objective. The back face is convex and forms a cylindrical surface defined by a generatrix of fixed direction moving perpendicularly along a circular arc comprising two ends, the plane passing through these two ends and parallel to the generatrix of the cylindrical surface forming a dihedral with the plane of the front face, the generatrix of the cylindrical surface being parallel to the edge of the dihedral.

Method for observing a sample in two spectral bands, and at two magnifications

Device for observing a sample, comprising: a light source configured to emit an incident light wave in a first spectral band and in a second spectral band, the first spectral band being different from the second spectral band; an image sensor comprising a first group of pixels, which are sensitive to the first spectral band, and a second group of pixels, which are sensitive to the second spectral band; a holder configured to hold the sample in a holder plane, the holder plane lying between the light source and the image sensor, such that when the sample is held by the holder, under the effect of its illumination by the incident light wave, a light wave of interest propagates to the image sensor; the device being configured to direct, to the image sensor, a first component of the light wave of interest, in the first spectral band, and a second component of the light wave of interest, in the second spectral band.

Tunable Spectral Slicer And Methods Of Use

Systems and methods for filtering an optical beam are described. In one implementation, a system for filtering an input optical beam includes a first beamsplitter, a first spectral slicing module, a second spectral slicing module, and a second beamsplitter. The first beamsplitter is configured to split the input optical beam into a first optical beam and a second optical beam. The first spectral slicing module has a first passband and is configured to filter the first optical beam. The second spectral slicing module has a second passband and is configured to filter the second optical beam. The second beamsplitter is configured to combine the first optical beam and the second optical beam into an output optical beam. The first and second spectral slicing modules may each comprise a longpass filter and a shortpass filter aligned along its optical axis, and the longpass filter and/or the shortpass filter are rotatable relative to the optical axis. Advantageously, the optical system allows for tunable spectral filtering of the input optical beam suitable for 2-D imaging systems. 120-: (canceled)21. An optical system for filtering an input optical beam , comprising:a first beamsplitter configured to split the input optical beam into a first optical beam and a second optical beam;a first spectral slicing module having a first passband and configured to filter the first optical beam, wherein the first spectral slicing module comprises a first longpass filter and a first shortpass filter aligned along a first optical axis, wherein at least one of the first longpass filter or the first shortpass filter is movable relative to the first optical axis;a second spectral slicing module having a second passband and configured to filter the second optical beam, wherein the second spectral slicing module comprises a second longpass filter and a second shortpass filter aligned along a second optical axis, wherein at least one of the second longpass filter or the second shortpass ...

COMPACT SPECTROMETER SYSTEM FOR NON-INVASIVE MEASUREMENT OF ABSORPTION AND TRANSMISSION SPECTRA IN BIOLOGICAL TISSUE SAMPLES

A spectrometer includes an illuminating section; a receiving section configured to detect radiation reflected from an object including an optically inhomogeneous scattering medium; a hardware section configured to obtain a solution of an inverse problem to reconstruct an absorption spectrum of the optically inhomogeneous scattering medium, wherein the illuminating section includes at least one light-emitting diode source, a radiation spectral curve of which is divided, by at least two spectral filters having different spectral transmission curves, into at least two spectral regions, to form an equivalent radiation spectrum from at least two spectral sources, and wherein the hardware section applies the solution of the inverse problem based on information about a spectral content of the radiation of the illuminating section, a signal obtained in a form of a response from the optically inhomogeneous scattering medium, and a spectral sensitivity curve of the receiving section. 1. A spectrometer comprising:at least one light-emitting diode source configured to emit radiation having a spectral characteristic to an optically inhomogeneous scattering medium;a radiation receiver configured to detect a scattered radiation from the optically inhomogeneous scattering medium;a processor configured to reconstruct an absorption spectrum of the optically inhomogeneous scattering medium, based on information about the spectral characteristic of the radiation emitted by the at least one light-emitting diode source, and a signal obtained from the radiation receiver in response to detection of the scattered radiation.2. The spectrometer of claim 1 , wherein the processor is further configured to reconstruct the absorption spectrum based on a result of calibration of at least one of the spectral characteristic and the signal obtained from the radiation receiver.3. The spectrometer of claim 2 , wherein the result of calibration comprises at least one of a result of calibration of the ...

ELECTRONIC APPARATUS AND CONTROL METHOD OF ELECTRONIC APPARATUS

A spectrometry device includes a wavelength variable interference filter, a filter driving unit, an imaging element which obtains color images corresponding to light with a red wavelength, light with a green wavelength, and light with a blue wavelength, respectively, and a composition unit which generates a composite image in which the red image, the green image, and the blue image are composited, the filter driving unit causes the wavelength variable filter to change the red wavelength every time when the red image is obtained, causes the wavelength variable filter to change the green wavelength every time when the green image is obtained, and causes the wavelength variable filter to change the blue wavelength every time when the blue image is obtained. 1. An electronic apparatus comprising:a spectral filter which selectively outputs light with a predetermined wavelength from input light, and is capable of changing the wavelength of the output light;a filter driving unit which causes the spectral filter to sequentially output light with a predetermined red wavelength which is included in a red wavelength range, light with a predetermined green wavelength which is included in a green wavelength range, and light with a predetermined blue wavelength which is included in a blue wavelength range by controlling the spectral filter;an imaging element which receives the light output from the spectral filter, and obtains a red image corresponding to the light with the red wavelength, a green image corresponding to the light with the green wavelength, and a blue image corresponding to the light with the blue wavelength; anda composition unit which generates a composite image in which the red image, the green image, and the blue image are composited,wherein the filter driving unit causes the spectral filter to change the red wavelength in the red wavelength range every time when the red image is obtained by the imaging element, causes the spectral filter to change the green ...

Spectral sensors

The present invention relates to a spectral sensor. The spectral sensor comprising: a light detecting element; a microlens; and an interference filter arranged between the light detecting element and the microlens, and configured to transmit light in one or more spectral bands; wherein the microlens has an effective focal length (F) exceeding a distance (D) between the microlens and the light detecting element. The microlens may be configured such that light refracted by the microlens, to be transmitted through the interference filter, converges towards a position (P) behind the light detecting element. The present invention further relates to an image sensor comprising a plurality of spectral sensors.

SPECTRUM-INSPECTION DEVICE

A spectrum-inspection device includes: a sensor unit array including a first sensor unit and a second sensor unit; a dual-band pass filter disposed on the sensor unit array to cover the first sensor unit and the second sensor unit, wherein the dual-band pass filter allows a first waveband and a second waveband of a light beam to pass through; and a filter disposed on the dual-band pass filter to cover the second sensor unit, wherein the filter allows wavelengths of a light beam longer than a first wavelength to pass through, wherein the first wavelength is longer than a peak wavelength of the first waveband and shorter than a peak wavelength of the second waveband. 1. A spectrum-inspection device , comprising:a sensor unit array comprising a first sensor unit and a second sensor unit;a dual-band pass filter disposed on the sensor unit array to cover the first sensor unit and the second sensor unit, wherein the dual-band pass filter allows a first waveband and a second waveband of a light beam to pass through;a filter disposed on the dual-band pass filter to cover the second sensor unit, wherein the filter allows wavelengths of a light beam longer than a first wavelength to pass through;a second dual-band pass filter disposed on the sensor unit array; anda second filter disposed on the second dual-band pass filter,wherein the first wavelength is longer than a peak wavelength of the first waveband and shorter than a peak wavelength of the second waveband,the sensor unit array comprises a third sensor unit and a fourth sensor unit,the second dual-band pass filter covers the third sensor unit and the fourth sensor unit and allows a third waveband and a fourth waveband of a light beam to pass through,the second filter covers the fourth sensor unit and allows wavelengths of a light beam longer than a second wavelength to pass through, andthe second wavelength is longer than a peak wavelength of the third waveband and shorter than a peak wavelength of the fourth waveband, ...

SPECTROSCOPIC MEASUREMENT DEVICE

A spectroscopic measurement device includes a dark filter that is arranged on an optical path between an imaging optical system and a light detection unit and includes a plurality of regions having different transmittances, the filter being configured such that a fixed reflected measurement light and a movable reflected measurement light that are guided to a same point by the imaging optical system and form interference light are transmitted through a same region; and an arithmetic processing unit that obtains an interferogram of the measurement light at a transmittance corresponding to each of two or more regions from a detection signal of each pixel of a light detection unit when a movable reflection unit is moved, and obtains a spectrum of the measurement light based on the interferogram. 1. A spectroscopic measurement device comprising:a) a fixed reflection unit;b) a movable reflection unit that has a reflection surface parallel to a reflection surface of the fixed reflection unit and is movable in a direction perpendicular to the reflection surface of the fixed reflection unit;c) an incident optical system that causes measurement light emitted from each of a plurality of measurement points inside of an object to be measured to enter the reflection surface of the fixed reflection unit and the reflection surface of the movable reflection unit;d) an imaging optical system that introduces fixed reflected measurement light reflected by the reflection surface of the fixed reflection unit and movable reflected measurement light reflected by the reflection surface of the movable reflection unit to the same point and forms interference light of the two reflected measurement lights;e) a light detection unit including a plurality of pixels for detecting an intensity of the interference lights each of which is generated from the measurement light emitted from each of the plurality of the measurement points;f) a dark filter that is arranged on an optical path between the ...

SPECTRAL IMAGING SYSTEM FOR REMOTE AND NONINVASIVE DETECTION OF TARGET SUBSTANCES USING SPECTRAL FILTER ARRAYS AND IMAGE CAPTURE ARRAYS

An approach to noninvasively and remotely detect the presence, location, and/or quantity of a target substance in a scene via a spectral imaging system comprising a spectral filter array and image capture array. For a chosen target substance, a spectral filter array is provided that is sensitive to selected wavelengths characterizing the electromagnetic spectrum of the target substance. Elements of the image capture array are optically aligned with elements of the spectral filter array to simultaneously capture spectrally filtered images. These filtered images identify the spectrum of the target substance. Program instructions analyze the acquired images to compute information about the target substance throughout the scene. A color-coded output image may be displayed on a smartphone or computing device to indicate spatial and quantitative information about the detected target substance. The system desirably includes a library of interchangeable spectral filter arrays, each sensitive to one or more target substances. 137-. (canceled)38. A spectral imaging system for remotely and noninvasively imaging a lymphatic system of a human or animal subject , in a scene , said spectral imaging system comprising:a) an image capture array comprising a plurality of image capturing elements, wherein each image capturing element independently captures an image of the scene; i. the spectral filter array is pre-associated with a fluorescently labeled lymphatic system;', 'ii. the spectral filter array includes a plurality of spectral filtering elements, wherein each spectral filtering element selectively passes a pre-selected bandwidth portion of the electromagnetic spectrum that is pre-associated with a spectral characteristic of the fluorescently labeled lymphatic system;', 'iii. the image capture array is optically aligned with the spectral filter array in a manner effective to capture spectrally filtered image information for a plurality of independent, spectrally filtered images ...

Wavelength filter and light receiving element

A wavelength filter of an embodiment includes: a first layer having a plurality of first regions containing a first material and a plurality of second regions containing a second material having a refractive index higher than that of the first material, each of the second regions provided between each of the first regions; a second layer provided on the first layer and containing the first material; and a third layer having a plurality of third regions containing the first material, each of the third regions provided on the second layer above each of the first regions, and a plurality of fourth regions containing the second material, each of the fourth regions provided between each of the third regions.

OPTICAL MEASUREMENT METHOD AND SYSTEM

An optical measurement method and system. The system includes, and method applies, a light source, a beamsplitter, at least one filter, a output photodetector for acquiring data of a sample, and a correction photodetector for correcting and maintaining output intensity from the light source. The filter is located between the light source and the correction photodetector for normalizing the spectrum of the input light being applied to input light correction. The filter may be incorporated into the beamsplitter and may be tuned to filter light from the light source for providing non-zero transmission of light with a near-zero gradient for wavelengths in a portion of the spectrum of the input light being applied to the sample and read by the output photodetector. The filter may also or alternatively be located downstream of the beamsplitter to correct for wavelength sensitivity of the correction photodetector. 131-. (canceled)32. A method of optical measurement comprising:providing a sample in a sample holder;providing a light source for generating input light;splitting the input light into first light and second light with a beamsplitter;applying the first light to the sample, resulting in output light;applying the output light to a output photodetector, for measuring the output light;filtering the second light with a flattening filter, resulting in filtered light;measuring the filtered light in a correction photodetector, resulting in correction data; andcorrecting the intensity of the input light based on the correction data;wherein the beamsplitter is not dichroic;the correction photodetector has a sensitivity function that varies with wavelength; andthe flattening filter has a transmission function adapted for normalizing the spectrum of the transmitted light with respect to the sensitivity function to mitigate wavelength-dependent photosensitivity of the photodiode.33. The method of claim 32 , wherein the light source is configured for a spectroscopy technique ...

Viewing and Processing Multispectral Images

Multispectral images, including ultraviolet light and its interactions with ultraviolet light-interactive compounds, can be captured, processed, and represented to a user. Ultraviolet-light related information can be conveniently provided to a user to allow the user to have awareness of UV characteristics and the user's risk to UV exposure. 1. A mobile device comprising:a camera sensor system capable of capturing a multispectral image comprising representations of wavelengths of light in a visible spectrum and an ultraviolet spectrum;a computer system coupled to the camera sensor system and configured to process the multispectral image to detect and identify an area representing a user in the multispectral image;the computer system is further configured to identify one or more areas of interest of the area representing the user by comparing the area representing the user with a predetermined-ultraviolet-light threshold;the computer system is further configured to render a display image for display from the multispectral image;wherein the rendering indicates the identified one or more areas of interest by giving the identified one or more areas of interest a false color on top of the representation of wavelengths of light in the visible spectrum; anda display coupled to the computer system and operable to display the rendered display image at approximately the same time the multispectral image is captured.2. The mobile device of claim 1 , wherein the predetermined-ultraviolet-light threshold is based on an ultraviolet reflectivity of a topical compound comprising sunscreen.3. The mobile device of claim 1 , wherein the predetermined-ultraviolet-light threshold is based on an ultraviolet reflectivity of a portion of the area representing a user n the multispectral images to (i) another portion of the portion of the area representing a user in the multispectral images or (ii) an area outside the portion of the area representing a user in the multispectral images.4. The ...

Raman spectrum plane imaging device

Aspects of Raman spectrum plane imaging device(s), belonging to the technical field of Raman spectra, are disclosed. In one example, a Raman spectrum plane imaging device may comprise a laser generation apparatus capable of adjusting an output wavelength, a light filtering apparatus, and a planar array detector. Laser light beams emitted by such laser generation apparatus may irradiate on a surface of a sample in a planar illuminating manner. According to systems herein, Raman scattered light generated by the sample under the excitation of the laser light beams is incident on the light filtering apparatus and is imaged on the planar array detector after selectively passing through the light filtering apparatus, to be received by the planar array detector. In some implementations, the light filtering apparatus may comprise an F-P interference device and a band-pass light filter.

Optical sensor and filter assembly with epoxy mounting structure and method of assembly

A mounting structure between the spectral filter and optical sensor includes one or more beads of epoxy that are bonded to the face of the sensor at locations adjacent and bonded to the edge of the spectral filter around its perimeter. Placement of the epoxy so that it bonds to the edge of the spectral filter improves the robustness of the package to sheer stresses. Placement of the epoxy at the edge, suitably in discrete spot bonds, also avoids putting epoxy in the optical path, contaminating the optically active area or using epoxy to control the gap height. Alignment of the spectral filter in the plane (x,y) may be achieved using fiducial marks on the sensor and filter. Alignment of the spectral filter out of the plane (z) may be achieved using incompressible spacer balls that set the gap height precisely to the diameter of the ball. Alternately, the spectral filter may be placed in direct contact with the optically active area of the sensor.

Adjustable Multi-Wavelength Lamp

An adjustable multi-wavelength lamp is described. The lamp can include a plurality of emitters. The emitters can include at least one ultraviolet emitter, at least one visible light emitter, and at least one infrared emitter. The lamp can include a control system for controlling operation of the plurality of emitters. The control system can be configured to selectively deliver power to any combination of one or more of the plurality of emitters to generate light approximating a target spectral distribution of intensity. 1. An adjustable multi-wavelength lamp comprising:a plurality of emitters, the plurality of emitters including at least one ultraviolet emitter, at least one visible light emitter, and at least one infrared emitter; anda control system for controlling operation of the plurality of emitters, wherein the control system is configured to selectively deliver power to any combination of one or more of the plurality of emitters to generate light approximating a target spectral distribution of intensity.2. The lamp of claim 1 , wherein the target spectral distribution of intensity corresponds to one of: an absorption claim 1 , a fluorescence claim 1 , or a reflection spectrum claim 1 , of a medium.3. The lamp of claim 1 , further comprising a set of optical elements for adjusting at least one of: a spectral distribution of intensity or a spatial distribution claim 1 , of light emitted by at least one of the plurality of emitters.4. The lamp of claim 3 , wherein the control system is further configured to operate at least one of the set of optical elements to selectively adjust the at least one of: the spectral distribution of intensity or the spatial distribution.5. The lamp of claim 3 , wherein the set of optical elements includes at least one optical element for focusing light emitted by the at least one of the plurality of emitters.6. The lamp of claim 1 , wherein the control system is configured to selectively operate at least one of the plurality of ...

SYSTEMS AND METHODS FOR MULTISPECTRAL IMAGING AND GAS DETECTION USING A SCANNING ILLUMINATOR AND OPTICAL SENSOR

Presented herein are systems and methods directed to a multispectral absorption-based imaging approach that provides for rapid and accurate detection, localization, and quantification of gas leaks. The imaging technology described herein utilizes a scanning optical sensor in combination with structured and scannable illumination to detect and image spectral signatures produced by absorption of light by leaking gas in a quantitative manner over wide areas, at distance, and in the presence of background such as ambient gas and vapor. Moreover, the specifically structured and scannable illumination source of the systems and methods described herein provides a consistent source of illumination for the scanning optical sensor, allowing imaging to be performed even in the absence of sufficient natural light, such as sunlight. The imaging approaches described herein can, accordingly, be used for a variety of gas leak detection, emissions monitoring, and safety applications. 1. A system for obtaining a multispectral absorption image of a scene using a structured illumination beam that is scanned in a synchronized fashion with an instantaneous field of view (ifov) of an optical sensor , the system comprising:(a) an illumination source aligned and operable to produce the structured illumination beam and direct the structured illumination beam towards a target surface within the scene, thereby illuminating an illumination spot corresponding to a projection of the structured illumination beam onto the target surface, the illumination spot having a length and a width, wherein the length is greater than or equal to the width;(b) a beam scanner operable to scan the illumination spot in a beam scan direction that is substantially parallel to the width of the illumination spot;(c) an optical sensor comprising one or more spectral detectors, each aligned and operable to detect light having wavelengths within a particular associated spectral band, wherein the optical sensor is aligned ...

Viewing and Processing Multispectral Images

Multispectral images, including ultraviolet light and its interactions with ultraviolet light-interactive compounds, can be captured, processed, and represented to a user. Ultraviolet-light related information can be conveniently provided to a user to allow the user to have awareness of UV characteristics and the user's risk to UV exposure.

Focus plane equalizer apparatus with prismatic focus corrector

Systems and methods for hyperspectral and multispectral imaging are disclosed. A system includes a lens and an imaging device having a plurality of pixel sensors. A focus corrector is located within the optical path to refract at least a portion of the incoming light and change the focusing distance of specific wavelengths of light to converge at a focal plane. The focal corrector is selected based upon the imaging system to reduce an overall measure of deviation between a focal length curve for the lens and a focus position curve for pixel sensors to produce focused imaging data for a broad spectrum of light, including beyond the visible range.

Systems and methods for implementing selective electromagnetic energy filtering objects and coatings using selectably transmissive energy scattering layers

A system and method are provided for forming energy filter layers or shutter components, including energy/light directing/scattering layers that are actively electrically switchable. The energy filters or shutter components are operable between at least a first mode in which the layers, and thus the presentation of the shutter components, appear substantially transparent when viewed from an energy/light incident side, and a second mode in which the layers, and thus the presentation of the energy filters or shutter components, appear opaque to the incident energy impinging on the energy incident side. The differing modes are selectable by electrically energizing, differentially energizing and/or de-energizing electric fields in a vicinity of the energy scattering layers, including electric fields generated between a pair of transparent electrodes sandwiching an energy scattering layer. Refractive indices of transparent particles, and the transparent matrices in which the particles are fixed, are tunable according to the applied electric fields.

Systems and methods for producing objects incorporating selectably active electromagnetic energy filtering layers and coatings

A system and method are provided for forming body structures including energy filters/shutter components, including energy/light directing/scattering layers that are actively electrically switchable. The filters or components are operable between at least a first mode in which the layers, and thus the presentation of the shutter components, appear substantially transparent when viewed from an energy/light incident side, and a second mode in which the layers, and thus the presentation of the energy filters or shutter components, appear opaque to the incident energy impinging on the energy incident side. The differing modes are selectable by electrically energizing, differentially energizing and/or de-energizing electric fields in a vicinity of the energy scattering layers, including electric fields generated between a pair of transparent electrodes sandwiching an energy scattering layer. Refractive indices of transparent particles, and the transparent matrices in which the particles are fixed, are tunable according to the applied electric fields.

Optical filters having spatially variant microreplicated layers

In an example, an example article may include a spatially variant microreplicated layer optically coupled to a wavelength selective filter. The wavelength selective filter may have a light incidence angle-dependent optical band. The spatially variant microreplicated layer may be configured to transmit light to a first optical region of the wavelength selective filter at a first predetermined incidence angle and to a second optical region of the wavelength selective filter at a second predetermined incidence angle.

VIEWING AND PROCESSING MULTISPECTRAL IMAGES

Multispectral images, including ultraviolet light and its interactions with ultraviolet light-interactive compounds, can be captured, processed, and represented to a user. Ultraviolet-light related information can be conveniently provided to a user to allow the user to have awareness of UV characteristics and the user's risk to UV exposure. 1. A mobile device comprising:a camera sensor system capable of capturing a multispectral image at approximately the same time, the multispectral image comprising representations of wavelengths of light in a visible spectrum and an ultraviolet spectrum;a computer system coupled to the camera sensor and configured to process the multispectral image to identify an area of interest by comparing the intensity of ultraviolet light in the multispectral image to a predetermined-ultraviolet-light threshold;wherein the computer system is further configured to render a display image for display from the multispectral;wherein the rendering indicates whether the area of interest lacks ultraviolet protection by identifying the portion of the area of interest with a false color on top of the representation of wavelengths of light in the visible spectrum; anda display coupled to the computer system processor and operable to display the rendered display image at approximately the same time the multispectral image is captured.2. The mobile device of 1 , wherein the predetermined-ultraviolet-light threshold is based on a ultraviolet reflectivity of a topical compound comprising sunscreen.3. The mobile device of 1 , wherein the predetermined-ultraviolet-light threshold is based on a ultraviolet reflectivity of a topical compound or a relative-ultraviolet-light threshold based on the reflectivity of a portion of the area of interest in the multispectral images to (i) another portion of the area of interest in the multispectral images or (ii) the surrounding environment outside the area of interest in the multispectral images.4. The mobile device of ...

OPTOELECTRICAL CHIP

The invention relates to an optoelectronic chip comprising the following elements: a light inlet; a wavelength-sensitive optical filter; a first photoelectric element for measuring a first light intensity, particularly a first photodiode, the first photoelectric element being arranged such that light penetrating the optoelectronic chip via the light inlet, transmitted by the filter, hits the first photoelectric element; and a second photoelectric element for measuring a second light intensity, particularly a second photodiode, the second photoelectric element being arranged such that the light penetrating the optoelectronic chip via the light inlet, which is reflected by the filter, hits the second photoelectric element. 1. An optoelectrical chip , comprising:a light inlet opening;a wavelength-sensitive optical filter;a first photoelectric element for measuring a first light intensity, the first photoelectric element being arranged such that light entering into the optoelectrical chip via the light inlet opening, which is transmitted by the filter, hits the first photoelectric element;a second photoelectric element, for measuring a second light intensity, the second photoelectric element being arranged such that light entering into the optoelectrical chip via the light inlet opening, which is reflected at the filter, hits the second photoelectric element.2. The optoelectrical chip according to claim 1 , wherein the optical filter is a wavelength-sensitive transmission filter or edge filter.3. The optoelectrical chip according to claim 1 , wherein a reflection surface of the optical filter is inclined relative to the propagation direction of the light entering into the optoelectrical chip via the light inlet opening.4. The optoelectrical chip according to claim 1 , wherein the light path from the light inlet opening to the filter claim 1 , the light path from the filter to the first photoelectric element claim 1 , and the light path from the filter to the second ...

Optical sensing device employing light intensity detectors integrated with nanostructures

Optical sensing devices employing light intensity detectors integrated with nanostructures. In some embodiments, the nanostructures are 3D nanostructures having feature sizes in all three dimensions comparable to a wavelength range of the incident light, and are used for hyperspectral sensing. In some other embodiments, the nanostructures are simultaneous sensitive to both the spectrum and one or more of polarization, angle and phase information of the incident light field, to provide multi-modal optical sensing devices. In some other embodiments, each spatial pixel of an image sensor includes a group of sampling pixels configured for hyperspectral sensing and another group of sampling pixels configured for sensing polarization, angle or phase of the incident light.

OPTICAL SPLITTER

An optical splitter includes a housing, a diffraction grating, and an optical filter. An incidence unit and an emission unit are provided in the housing. The optical filter is disposed between the emission unit and the diffraction grating in the housing. An anti-reflection coating is formed on a surface of a filter main body of the optical filter on the emission unit side. Therefore, from light dispersed by the diffraction grating and having passed through the optical filter, light reflected at a back surface of the emission unit passes through the optical filter without being reflected by a back surface of the optical filter and is directed toward the inside of the housing. As a result, light having passed through the optical filter and having a wavelength other than a target wavelength is inhibited from being emitted from an emission slit of the emission unit. 1. An optical splitter comprising:a housing into which light is incident and which emits the incident light from an emission slit;a diffraction grating provided in the housing and configured to disperse the light incident into the housing into light by wavelength; andan optical filter provided between the diffraction grating and the emission slit and configured to transmit only light of a selected wavelength to emit the light from the emission slit, whereinan anti-reflection coating is formed on a surface of the optical filter at least on the emission slit side.2. The optical splitter according to claim 1 , further comprising:a filter switching mechanism which switches between a plurality of optical filters to dispose any one of the optical filters between the diffraction grating and the emission slit, whereinthe anti-reflection coating is formed on a surface of each of the optical filters at least on the emission slit side. This application claims the priority of Japan patent application serial no. 2018-059657, filed on Mar. 27, 2018. The entirety of the above-mentioned patent application is hereby ...

TUNABLE FILTERS FOR SPECTRAL SENSING

A spectroscopic analysis device for analysis of a sample comprises an input for receiving light from the sample and a photonic integrated circuit. This photonic optical filter comprises one or more tunable bandpass filters arranged to filter the received light. Furthermore, the device comprises a controller that is arranged—to control the one or more tunable bandpass filters, to receive filter results obtained from the one or more tunable bandpass filters, and to provide spectroscopic analysis results based on the received filter results. 1. A spectroscopic analysis device for analysis of a sample of a substance based on a classification algorithm having a plurality of spectral coefficients that each correspond to a contribution to the classification algorithm from a wavelength interval , the device comprising:an input for receiving light from the sample, one or more tunable bandpass filters arranged to filter the received light, and', 'one or more photodetectors;', 'wherein each of the photodetectors is operatively connected to a respective one of each of the one or more tunable bandpass filters; and', 'wherein each photodetector further comprises an integrator that is configured to integrate an electrical output of the corresponding photodetector, and, 'a photonic integrated circuit comprising to control the one or more tunable bandpass filters,', 'to control the one or more integrators;', 'to receive, from each integrator, filter results obtained from the one or more tunable bandpass filters,', 'wherein the controller is further arranged to provide spectroscopic analysis results of the sample based on the filter results received from each integrator and based on the classification algorithm by either i) attenuating the filtered received light detected by the one or more photodetectors in accordance with the plurality of spectral coefficients by controlling the time during which each tunable bandpass filter filters each wavelength interval and/or ii) attenuating ...

SYSTEMS, DEVICES, AND METHODS FOR TIME-RESOLVED FLUORESCENT SPECTROSCOPY

Provided herein are devices, systems, and methods for characterizing a biological sample in vivo or ex vivo in real-time using time-resolved spectroscopy. A light source generates a light pulse or continuous light wave and excites the biological sample, inducing a responsive fluorescent signal. A demultiplexer splits the signal into spectral bands and a time delay is applied to the spectral bands so as to capture data with a detector from multiple spectral bands from a single excitation pulse. The biological sample is characterized by analyzing the fluorescence intensity magnitude and/or decay of the spectral bands. The sample may comprise one or more exogenous or endogenous fluorophore. The device may be a two-piece probe with a detachable, disposable distal end. The systems may combine fluorescence spectroscopy with other optical spectroscopy or imaging modalities. The light pulse may be focused at a single focal point or scanned or patterned across an area. 1. A method for classifying or characterizing a sample , the method comprising:radiating a sample with at least one light pulse at a predetermined wavelength to cause the sample to produce a responsive optical signal;collecting the responsive optical signal from the sample; andsplitting the responsive optical signal at pre-determined wavelength ranges with a filter wheel comprising a plurality of spectral filters to obtain a plurality of temporally distinct spectral bands corresponding to the plurality of spectral filters,characterizing, in near real-time or real-time, the sample based on the plurality of temporally distinct spectral bands using time-resolved fluorescence spectroscopy.2. The method of claim 1 , wherein each of the temporally distinct spectral bands is time delayed with respect to another.3. The method of claim 1 , wherein the responsive optical signal comprises one or more of a fluorescence spectrum claim 1 , a Raman spectrum claim 1 , an ultraviolet-visible spectrum claim 1 , or an infrared ...

SYSTEMS AND METHODS FOR IMPLEMENTING SELECTIVE ELECTROMAGNETIC ENERGY FILTERING OBJECTS AND COATINGS USING SELECTABLY TRANSMISSIVE ENERGY SCATTERING LAYERS

A system and method are provided for forming energy filter layers or shutter components, including energy/light directing/scattering layers that are actively electrically switchable. The energy filters or shutter components are operable between at least a first mode in which the layers, and thus the presentation of the shutter components, appear substantially transparent when viewed from an energy/light incident side, and a second mode in which the layers, and thus the presentation of the energy filters or shutter components, appear opaque to the incident energy impinging on the energy incident side. The differing modes are selectable by electrically energizing, differentially energizing and/or de-energizing electric fields in a vicinity of the energy scattering layers, including electric fields generated between a pair of transparent electrodes sandwiching an energy scattering layer. Refractive indices of transparent particles, and the transparent matrices in which the particles are fixed, are tunable according to the applied electric fields. 1. An electromagnetic energy filtering structure , comprising: a plurality of substantially-transparent particles; and', 'a substantially-transparent matrix material that fixes the particles in a layer arrangement to form the energy scattering layer, the energy scattering layer having an energy-incident surface and an opposite surface;, 'an energy scattering layer, comprising'}at least one transparent electrode positioned adjacent to one of the energy-incident surface or the opposite surface of the energy scattering layer; anda power source that generates an electrical field via the at least one transparent electrode,portions of the energy scattering layer exhibiting a first refractive index in a first mode, and a second refractive index different from the first refractive index in a second mode when subjected to effects from the generated electrical field, andrefractive indices of at least some of the plurality of ...