Spectrometer Device and Method for Producing a Spectrometer Device

A spectrometer device includes an optical interference filter which is designed to filter specific wavelength ranges of an incident light beam on passage through the optical interference filter. The spectrometer device also includes a detector device which is designed to detect the filtered light beam. Further, the spectrometer device includes a focusing device with a reflective surface. The focusing device is designed to focus the filtered light beam onto the detector device by reflection on the surface.

Spectroscopic apparatus and spectroscopic light source

A spectroscopic apparatus includes an optical system configured to transmit output light from a sample irradiated with irradiation light from a light source, a two-dimensional array light detector configured to photograph light transmitted through the optical system, and a control unit. The optical system includes a first optical device disposed between the sample and the two-dimensional array light detector, a second optical device disposed between the two-dimensional array light detector and the first optical device, and a variable band-pass filter disposed in at least one of spaces between the first optical device and the sample and between the second optical device and the two-dimensional array light detector. The control unit changes a light transmission wavelength band of the variable band-pass filter in accordance with a photographing timing of the two-dimensional array light detector.

METHODS FOR SPECTRAL MAPPING

Methods use a tunable notch filter for constructing a spectral map of electromagnetic radiation in a selected spectral band that is incident on a notch filter for a plurality of time periods. Electromagnetic radiation is passed by an electronically tuned notch filter to a detector array for the plurality of selected time periods, and the detector response is determined. For at least a first selected time period the notch filter is tuned to selectively attenuate the passing of one or more selected sub-bands of electromagnetic radiation in the selected spectral band. Information about the selectively attenuated radiation is determined and used along with information about the radiation passed to the detector array for each time period to construct a spectral map. Electronically tunable notch filters may be made with metamaterials such as patterned graphene. 1. A method for analyzing electromagnetic radiation , the method comprising:for a plurality of selected time periods, passing electromagnetic radiation from an electronically tuned notch filter to a detector array, the electromagnetic radiation being incident on the notch filter and in a selected spectral band, and wherein the notch filter is tuned differently for each of the plurality of selected time periods and the electromagnetic radiation is passed by the notch filter;for at least a first selected time period in the plurality of selected time periods, selectively attenuating the passing of electromagnetic radiation that is incident on the notch filter and in a first set of one or more than one sub-bands in the selected spectral band;for each of the plurality of selected time periods, determining an electrical response of the detector array to the passed electromagnetic radiation and receiving at a data processor a data array representative of the determined electrical response of the detector array to the passed electromagnetic radiation;computationally comparing two or more of the received data arrays, the ...

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.

Wavelength selection module, illumination system and metrology system

Disclosed is a wavelength selection module for a metrology apparatus. The wavelength selection module comprises one or more filter elements being operable to receive an input radiation beam comprising multiple wavelengths to provide selective control of a wavelength characteristic of a corresponding output radiation beam. At least one of said one or more filter elements comprises at least two linear variable filters.

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.

OPTICAL MODULE AND ELECTRONIC APPARATUS

An optical module includes a first substrate including an optical filter device having a wavelength variable interference filter built therein, a second substrate including a light receiving element and a first supporter that mechanically or electrically joins the first substrate and the second substrate to each other, in which the wavelength variable interference filter and the light receiving element are disposed to face each other by the first supporter and the first substrate and the second substrate are joined to each other by the first supporter with a gap in which a circuit element is mountable. 1. An optical module comprising:a first substrate including an optical filter device having a wavelength variable interference filter built therein;a second substrate including a light receiving element; anda first supporter that mechanically or electrically joins the first substrate and the second substrate to each other, whereinthe wavelength variable interference filter and the light receiving element are disposed to face each other by the first supporter, andthe first substrate and the second substrate are joined to each other by the first supporter with a gap in which a circuit element is mountable.2. The optical module according to claim 1 , further comprising:a third substrate; anda second supporter that mechanically or electrically joins the second substrate and the third substrate to each other, whereinthe second substrate and the third substrate are joined to each other by the second supporter with a gap in which a circuit element is mountable.3. The optical module according to claim 1 , wherein the second substrate includes a capacitance voltage conversion circuit.4. An electronic apparatus comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the optical module according to ; and'}a control unit that controls the optical module. The present application is based on, and claims priority from JP Application Serial Number 2018-236086, filed Dec. 18, ...

SYSTEMS AND METHODS FOR CHEMICAL ANALYSIS USING FABRY-PEROT TUNABLE FILTER-ATTENUATED TOTAL REFLECTANCE (FPTF-ATR) SPECTROMETER

Disclosed is a combination of a Fabry-Perot Tunable Filter (FPTF) wavelength selector, an internal reflection element (IRE) capable of measuring Attenuated Total Reflectance (ATR) spectra, and a pressure application element for applying pressure to samples, if needed. The resultant portable and compact device is called an FPTF-ATR spectrometer. The device measures data that can be used to identify chemical species in samples, predict properties of samples, and quantify amounts of chemical species in samples. Also disclosed are methods for using the FPTF-ATR for analyzing samples, especially analyzing compounds containing , hops, and other chemical species where portable chemical analysis is important. 1. A chemical analysis device for analyzing a sample , comprising:a source of electromagnetic radiation optically coupled to a first set of transfer optics;an internal reflection element capable of forming an evanescent wave at one or more surfaces, said one or more surfaces adapted for being exposed to a liquid or solid sample comprising at least one sampling surface, the internal reflection element optically coupled to said first set of transfer optics;a second set of transfer optics optically coupled to said internal reflection element;a Fabry-Perot tunable filter wavelength selector optically coupled to said second set of transfer optics, said Fabry-Perot tunable filter comprising at least one mobile reflective surface for adjusting bandpass wavelengths;a detector element optically coupled to said Fabry-Perot tunable filter that turns electromagnetic radiation into a signal; anda communication element to send the signal to a control, display, and data analysis device.2. The device of claim 1 , further comprising:a reflective surface moving element for moving the mobile reflective surface of the Fabry-Perot tunable filter.3. The device of claim 2 , wherein the reflective surface moving element is voltage-activated and electrostatically actuated.4. The device of ...

Interferometer and Method for Producing an Interferometer

An interferometer includes a holding element having an actuation recess, a first mirror element arranged on the holding element opposite the actuation recess, and a second mirror element arranged opposite the first mirror element at a mirror distance, to form an optical slit. The first mirror element is arranged between the second mirror element and the holding element and the optical slit is spatially separated from the actuation recess by the first mirror element. The interferometer further includes an electrode pair including a first actuation electrode in one of the mirror elements and a second actuation electrode on a side of the actuation recess opposite the first actuation electrode. The mirror distance can be varied by applying an electrical voltage to the electrode pair. 1. An interferometer comprising:a holding element defining an actuation recess;a first mirror element arranged or arrangeable on the holding element opposite the actuation recess;a second mirror element arranged or arrangeable opposite the first mirror element at a mirror spacing in order to form an optical gap, the first mirror element being arranged or arrangeable between the second mirror element and the holding element, and the optical gap being spatially separated from the actuation recess by the first mirror element; andan electrode pair comprising a first actuation electrode defined, arranged, and/or arrangeable on or in one of the first and second mirror elements, and a second actuation electrode defined, arranged, and/or arrangeable on a side of the actuation recess opposite the first actuation electrode, the mirror spacing being changeable by applying an electrical voltage to the electrode pair.2. The interferometer as claimed in claim 1 , wherein the first actuation electrode is defined claim 1 , arranged claim 1 , and/or arrangeable on or in the first mirror element.3. The interferometer as claimed in claim 1 , wherein the holding element further comprises:a substrate and/or a ...

TUNABLE NOTCH FILTER

A tunable notch filter for operation in reflection mode comprises an antenna layer positioned on a transmissive substrate and a mirror layer positioned on a support substrate. The antenna layer and the mirror layer are positioned on opposite sides of a gap and facing each other, the gap having a gap distance. The notch filter is tuned by adjusting the gap distance between the antenna layer and the mirror layer. Tuning the notch filter to a selected state can cause the filter to selectively attenuate the reflection of at least some electromagnetic radiation that is incident on the transmissive substrate and enters the notch filter. 1. A tunable notch filter comprising:an antenna layer positioned on a transmissive substrate;a mirror layer positioned on a support substrate;wherein the antenna layer and the mirror layer are positioned on opposite sides of a gap and facing each other, the gap having a gap distance, andwherein the notch filter is tunable by adjusting the gap distance between the antenna layer and the mirror layer.2. The notch filter of claim 1 , wherein the gap is devoid of a structural element.3. The notch filter of claim 2 , wherein the transmissive substrate comprises at least one of ZnSe claim 2 , Si claim 2 , Ge claim 2 , or AlO.4. The notch filter of claim 2 , wherein the gap is a vacuum gap.5. The notch filter of claim 2 , wherein the gap is filled with a fluid.6. The notch filter of claim 5 , wherein the fluid is a liquid or a gas.7. The notch filter of claim 1 , configured for selectively attenuating the reflection of at least one wavelength of electromagnetic radiation that is incident on the notch filter.8. The notch filter of claim 1 , wherein the antenna layer and the mirror layer are configured for selectively attenuating the reflection of at least one wavelength of incident electromagnetic radiation having a selected polarization state.9. The notch filter of claim 1 , wherein the antenna layer and the mirror layer are configured for ...

Spectral imaging method and system

An imaging system and method are presents for use in reconstructing spectral data of an object. The imaging system comprises: an optical unit; a pixel array of a detector; and a data processor for receiving and processing image data indicative of light detected by the pixel array and generating reconstructed spectral data of the object being imaged. The optical unit is configured and operable for applying a predetermined coding to an input light field while creating an optical image thereof on a detection plane defined by the pixel array. Therefore, the image data is a function of the predetermined coding and a spectrum of the object to be determined.

MICROCAVITY ARRAY FOR SPECTRAL IMAGING

Tunable filter arrays include an array of liquid crystal (LC) tunable Fabry-Perot (FP) microcavities. The microcavities are defined by first and second reflectors and an LC layer situated between the reflectors. The tunable filter is secured to an image sensor array so that the LC tunable microcavities are coupled to respective photodetectors of the image sensor array. Patterned electrodes are situated about the LC layer to tune the microcavities. 1. An optical device , comprising:first and second reflectors;a liquid crystal layer situated between the first and second reflectors, the liquid crystal layer and the first and second reflectors defining an optical cavity;first and second conductive electrodes situated to define a plurality of electrically controllable microcavities in the optical cavity.2. The optical device of claim 1 , wherein at least one of the first and second conductive electrodes includes a plurality of microcavity electrodes that define the electrically controllable microcavities.3. The optical device of claim 1 , wherein at least one of the first and second conductive electrodes is situated external to the optical cavity.4. The optical device of claim 1 , further comprising:a first transparent substrate, wherein the first reflector is situated at a cavity-facing surface of the first transparent substrate; anda second transparent substrate, wherein the second reflector is situated at a cavity-facing surface of the second transparent substrate.5. The optical device of claim 4 , wherein the first and second conductor electrodes are arranged so as to form a microcavity electrode array claim 4 , and the cavity-facing surface of the first substrate includes a plurality of concave portions claim 4 , each concave portion corresponding to a respective microcavity.6. The optical device of claim 1 , wherein the first and second reflectors are dielectric reflectors having reflectivities of at least 90% in a selected spectral range.7. The optical device of ...

MULTICHROMATIC CALIBRATION METHOD AND DEVICE

A Multichromatic Calibration (MC) method of at least a spectral sensor which is one of a list comprising at least a spectrometer, a multispectral sensor, a hyperspectral sensor, a spectral camera, a color camera. The method comprises a. generating a plurality of different multichromatic spectra, wherein i. a spectrum from the plurality of different multichromatic spectra contains light intensity measurable by the at least one spectral sensor and by a reference spectral device, and ii. a spectrum from the plurality of different multichromatic spectra contains light centered around at least two different wavelengths and is configured to be integrated during an exposure time of a single measurement from any of the at least one spectral sensor or the reference spectral device; b. measuring each multichromatic spectrum of the plurality of different multichromatic spectra with the reference spectral device and the at least one spectral sensor; and from all data of the measured multichromatic spectra, compute a transfer function which relates a response of the at least one spectral sensor to a corresponding response of the reference spectral device, without measuring the spectral response of the at least one spectral sensor. 1. A Multichromatic Calibration (MC) method of at least a spectral sensor which is one of a list comprising at least a spectrometer , a multispectral sensor , a hyperspectral sensor , a spectral camera , a color camera , the method comprising i. a spectrum from the plurality of different multichromatic spectra contains light intensity measurable by the at least one spectral sensor and by a reference spectral device, and', 'ii. a spectrum from the plurality of different multichromatic spectra contains light centered around at least two different wavelengths and is configured to be integrated during an exposure time of a single measurement from any of the at least one spectral sensor or the reference spectral device;, 'a. generating a plurality of ...

HYDROGEN SULFIDE IMAGING SYSTEM

Various embodiments disclosed herein describe an infrared (IR) imaging system for detecting a gas. The imaging system can include an optical filter that selectively passes light having a wavelength in a range of 1585 nm to 1595 nm while attenuating light at wavelengths above 1600 nm and below 1580 nm. The system can include an optical detector array sensitive to light having a wavelength of 1590 that is positioned rear of the optical filter. 1105-. (canceled)106. An infrared (IR) imaging system for detecting carbon dioxide (CO) gas , the imaging system comprising:an optical detector array; andan optical filter that selectively transfers light within a band of IR wavelengths to the optical detector array,{'sub': 2', '2', '4', '2', '2, 'wherein, within the band of IR wavelengths, a convolution of the optical filter with an absorption spectrum of COgas is greater than a convolution of the optical filter with an absorption spectrum of hydrogen sulfide (HS), or methane (CH), or sulfur dioxide (SO), or water (HO).'}107. The system of claim 106 , wherein the convolution of the optical filter with the absorption spectrum of COgas is in a range of 50 to 10 claim 106 ,000 times greater than the convolution of the optical filter with the absorption spectrum of hydrogen sulfide (HS).108. The system of claim 106 , wherein the convolution of the optical filter with the absorption spectrum of COgas is in a range of 100 to 5 claim 106 ,000 times greater than the convolution of the optical filter with the absorption spectrum of hydrogen sulfide (HS).109. The system of claim 106 , wherein the convolution of the optical filter with the absorption spectrum of COgas is in a range of 500 to 5 claim 106 ,000 times greater than the convolution of the optical filter with the absorption spectrum of hydrogen sulfide (HS).110. The system of claim 106 , wherein the optical filter selectively passes light having a wavelength in a range of 1400 nm to 1500 nm while attenuating light at wavelengths ...

LIGHT MEASUREMENT DEVICE WITH IDENTIFIABLE DETECTION ELEMENTS

A light measurement device comprising an optical sensor that includes a tunable interference filter and a detecting section detecting light passed through the tunable filter, a storing section that stores a first correlation data and a second correlation data, and a CPU that obtains amount of the light by controlling the optical sensor based on the first correlation data and a second correlation data. 1. A measurement method for a light measurement device , the measurement method comprising:controlling a tunable interference filter based on a drive input, such that the tunable interference filter transmits a selected wavelength of a light;detecting light passed through the tunable interference filter via a plurality of detecting elements arranged in a two-dimensional array;identifying a subject detecting element from among the plurality of detecting elements based on a correlation data stored in a storing section, wherein the subject detecting element receives the light having the selected wavelength transmitted by the tunable interference filter, and the correlation data indicates a wavelength detected by each of the detecting elements for a given drive input; anddetermining an amount of the light detected by the subject detecting element.2. The measurement method of wherein the tunable interference filter includes a first reflection coating claim 1 , a second reflection coating claim 1 , and a gap variable section that changes a gap between the first reflection coating and the second reflection coating in response to the drive input.3. The measurement method of further comprising:controlling the tunable interference filter based on a first input value as the drive input;identifying a first detecting element as the subject detecting element based on the correlation data;determining a first amount of light detected by the first detecting element;controlling the tunable interference filter based on a second input value as the drive input, wherein the second input ...

Wavelength locker

Conventionally, wavelength locking and monitoring has been achieved used various components, including calibrated etalon filters, gratings, and arrays of color filters, which offer fairly bulky solutions that require complicated controls. An improved on-chip wavelength monitor comprises: a combination comb filter comprising a plurality of comb filters, each for receiving a test beams, and each comb filter including a substantially different FSR, e.g. 10× to 20× the next closest FSR. A controller dithers a phase tuning section of each comb filter to generate a maximum or minimum output in a corresponding photodetector indicative of the wavelength of the test signal.

Systems and Methods for 4-D Hyperspectral Imaging

Systems and methods for hyperspectral imaging are described. In one implementation, a hyperspectral imaging system includes a sample holder configured to hold a sample, an illumination system, and a detection system. The illumination system includes a light source configured to emit excitation light having one or more wavelengths and a diffractive element. The illumination system is configured to structure the excitation light into a predetermined two-dimensional pattern at a conjugate plane of a focal plane in the sample, spectrally disperse the structured excitation light in a first lateral direction, and illuminate the sample in an excitation pattern with the one or more wavelengths dispersed in the first lateral direction. 1. A hyperspectral imaging system comprising:a sample holder configured to hold a sample;a light source configured to emit excitation light having one or more wavelengths;a two-dimensional (2-D) imaging array; and a first element comprising a first dispersive element or a first diffractive element; and', 'a second element comprising a second dispersive element or a second diffractive element;, 'an optical system comprisingwherein the optical system is configured to (i) structure the excitation light, using the first element, into a spectrally dispersed two-dimensional excitation pattern at a focal plane in the sample or a conjugate plane of the focal plane; (ii) use the excitation pattern to illuminate the sample with the one or more wavelengths dispersed along a first direction within the focal plane; (iii) collect, from the sample, emission light; (iv) spectrally disperse, using the second element, the collected emission light; and (v) provide the collected emission light in-focus to the imaging array such that the collected emission light is spectrally dispersed along a second direction.2. The hyperspectral imaging system of claim 1 , wherein the first element is configured to modulate a phase of the excitation light.3. The hyperspectral ...

Optical device and system using same

在此描述的特定范例指向包括第一和第二光学元素的光学器件和系统。在一些范例中，第一光学元素可能配置成传递从激发源收到的光，而第二光学元素可能与第一光学元素光学耦合而且可能配置成把从第一光学元素入射的光反射回第一光学元素而且配置传递从第一光学元素反射的光。另外，描述了使用这些器件和系统的方法。

Tunable filter module

Cam filter wheel for tilting optical filters

ABSTRACT OF THE DISCLOSURE A cam filter wheel apparatus disclosed for tilting interference filters in order to achieve variation in the light wavelength transmitted by each filter. The wheel apparatus contains a number of filters each mounted so as to pivot and change its inclination with respect to an incident light beam as the filter wheel rotates each filter through the light path. The pivot motion is achieved by a cam follower associated with each filter which rides on a stationary cam track.

Optical communication systems using fabry-perot cavities

OPTICAL COMMUNICATION SYSTEMS USING FABRY-PEROT CAVITIES Abstract This invention is a new type of Fabry-Perot cavity, and an optical communication system using such a cavity. The inventive Fabry-Perot cavity comprises both a waveguiding portion and a nonwaveguiding portion. In this manner, tunable cavities of desirable mid-range length, necessary to obtain required free spectral ranges, may be fabricated with minimal diffraction lossesotherwise associated with cavities of such length. The cavity length may be varied using, for example, piezoelectric elements, and the various cavity elements may be aligned and connected, using fiber connector technology.

colorimetry method, colorimetry device, spectral measurement method, spectral measurement device and electronic apparatus

本发明提供一种能够维持明度的幅度而缩短测色所花费的时间的测色方法及装置、分光测定方法及装置、以及电子设备。拍摄装置(12)以规定的曝光时间进行拍摄，输出拍摄数据，明度判断部(36)判断拍摄数据的明度是否在规定范围。当拍摄数据的明度不在规定范围时，变更曝光时间进行再拍摄。当拍摄数据的明度不到判断值时，延长曝光时间进行再拍摄，当拍摄数据的明度饱和时，缩短曝光时间进行再拍摄。

Arrangement adapted for spectral analysis

An arrangement ("Al') adapted for a spectral analysis, having a light transmitting means (10, 2a), a delimited space (11) in the form of a cavity serving as a measuring cell and defining an optical measuring distance ("L"), a light sensing means (12) for detecting radiation (4) passing said optical measuring distance ("L") from said light transmitting means (10), and a unit (13), connected at least to said light sensing means (12) and performing the spectral analysis. Beams of radiation from the light transmitting means are made to pass through an optical band-pass filter (3f) at different angles of incidence. The filter is structured so as to pass a wavelength in dependence of the angle of incidence. A first chosen wavelength component is separated from a second wavelength component, each being received in its opto-electric means (3b, 3b') - Said unit is adapted for detecting and calculating an occurring radiation intensity for each such wavelength component.

Optical device for deflecting a light beam and inelastic scattering spectrometer comprising such a device

L’invention concerne un dispositif optique de déviation d’un faisceau lumineux (1) comprenant :- un premier élément réflectif (4) plan, disposé de manière à réfléchir un faisceau lumineux entrant (2) en un faisceau lumineux réfléchi (5), s’étendant dans un premier plan (11), ledit faisceau lumineux entrant et ledit faisceau lumineux réfléchi définissant un plan d’incidence ; et- un deuxième élément réflectif (6) plan, disposé pour réfléchir ledit faisceau lumineux réfléchi en un faisceau lumineux sortant (3),  s’étendant dans un deuxième plan (12) transverse au plan d’incidence ;ledit premier plan et ledit deuxième plan étant sécants selon une droite d’intersection (D) et formant entre eux un angle dièdre (BETA), ledit premier élément réflectif et ledit deuxième élément réflectif sont solidairement mobiles en rotation autour d’un axe de rotation (10) sensiblement confondu avec ladite droite d’intersection. Figure d’abrégé : figure 1. The invention relates to an optical device for deflecting a light beam (1) comprising:- a first planar reflective element (4), arranged so as to reflect an incoming light beam (2) into a reflected light beam (5), extending in a first plane (11), said incoming light beam and said reflected light beam defining a plane of incidence; and- a second planar reflective element (6), arranged to reflect said reflected light beam into an outgoing light beam (3), extending in a second plane (12) transverse to the plane of incidence;said first plane and said second plane being secant along a line of intersection (D) and forming between them a dihedral angle (BETA), said first reflective element and said second reflective element are integrally movable in rotation around an axis of rotation (10) substantially coinciding with said line of intersection. Abstract Figure: Figure 1.

Spectral imaging method and system

Method and control device for operating a microspectrometer and microspectrometer system

Die Erfindung betrifft ein Verfahren zum Betreiben eines Mikrospektrometers (102), wobei das Verfahren einen Schritt des Bestrahlens eines zu messenden Messobjekts (130) mit einer ersten spektralen Intensitätsverteilung (120) mit einer ersten Pulscharakteristik (118) und zumindest einer zweiten spektralen Intensitätsverteilung (124) mit einer zweiten Pulscharakteristik (122) unter Verwendung einer modulierbaren Emittereinrichtung (106) des Mikrospektrometers (102), einen Schritt des Durchlassens eines der ersten spektralen Intensitätsverteilung (120) zugeordneten ersten Wellenlängenbereichs (134) und eines der zweiten spektralen Intensitätsverteilung (124) zugeordneten zweiten Wellenlängenbereichs (136) aus einer von dem Messobjekt (130) reemittierten spektralen Reflexintensitätsverteilung (132) unter Verwendung einer durchstimmbaren Filtereinrichtung (108) des Mikrospektrometers (102), einen Schritt des Abbildens einer Strahlungsintensität des ersten Wellenlängenbereichs (134) und des zweiten Wellenlängenbereichs (136) in einem Detektorsignal (138) unter Verwendung einer Detektoreinrichtung (110) des Mikrospektrometers (102) und Demodulieren des Detektorsignals (138) unter Verwendung der ersten Pulscharakteristik (118) und der zweiten Pulscharakteristik (122), um einen dem ersten Wellenlängenbereich (134) zugeordneten ersten Intensitätswert (140) und einen dem zweiten Wellenlängenbereich (136) zugeordneten zweiten Intensitätswert (142) zu erhalten. The invention relates to a method for operating a microspectrometer (102), the method comprising a step of irradiating a measured object (130) to be measured with a first spectral intensity distribution (120) having a first pulse characteristic (118) and at least one second spectral intensity distribution (124 ) having a second pulse characteristic (122) using a modulatable emitter device (106) of the microspectrometer (102), a step of transmitting one of the first spectral intensity distribution (120) associated first ...

Apparatus for evaluating the quality of rice grains

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 1 ) and a second optical chain (C 2 ); wherein each optical chain (C 1 , C 2 ) of the photonic integrated circuit (PIC) further comprises a tunable bandpass filter (TBF 1 , TBF 2 ) and a variable attenuator (ATT 1 , ATT 2 ) and a photodetector (PD 1 , PD 2 ) arranged respectively to filter and to attenuate and to detect the light distributed into its corresponding optical chain (C 1 , C 2 ).

Optical devices and systems using them

Adaptive optical filter or spectrally adjustable light source

Die Erfindung ermöglicht die Realisierung zeitlich sehr schnell durchstimmbarer Lichtquellen bzw. sehr schnell durchstimmbarer Spektrometer mit den Techniken der Mikrosystemetechnik. Die technische Lösung beruht auf einer speziellen Technologie von optischen Filtern, die aus sogenannten Multilayer-Strukturen bestehen, und deren Integration zu einem Gesamtsystem zur Erreichung einer spektral einstellbaren Lichtquelle. Durch geeignete Wahl der Brechungsindizes der periodischen Layer konnte gezeigt werden, dass mit dieser optischen Plattform die optischen Eigenschaften von solchen Multilayer-Strukturen so gesteuert werden können, dass eine Vielzahl von optischen Spektren gezielt eingestellt werden können, so z. B. schmalbandige Rugate-Filter, bei denen sogenannte Seitenbanden in der Reflexion soweit unterdrückt werden können, dass solche auf Si-Chips erzeugte Multilayer-Strukturen zu nahezu monochromatischem Licht führen (wobei die jeweilige Wellenlänge durch die gewählte Multilayerstruktur festgelegt und zunächst nicht veränderbar ist). Je nach Typ des Spektrums arbeiten die Filter im Reflexions- oder im Transmissionsmode. Im Kern der Erfindung stehen Verfahren, wie aus solchen „passiven” Filterstrukturen durchstimmbare optische Filter entstehen, die um gewünschte zentrale Wellenlängen (MIR-UV) sehr schnell moduliert werden können. Dazu können zwei getrennte Möglichkeiten eingesetzt werden: a) hier werden die Filterstrukturen auf elektrostatisch auslenkbaren Kippspiegel angeordnet. Damit wird nach ersten Systemsimulationen und Messungen eine Verstimmbarkeit der Wellenlängen von ±70–100 nm mit Frequenzen im kHz-Bereich als erreicht. Der Verkippungswinkel wird dabei mit Hilfe von geeignet gewählten Gegenelektroden (der verkippte Spiegel fungiert als variable Elektrode), die ortsfest auf dem Substrat aufgebracht werden, und durch geeignete Aufhängung/Verbindung des Spiegels zum Substrat bestimmt. Die Vermessung des Kippwinkels erfolgt anhand von ebenfalls integrierten ...

Apparatus for evaluating the quality of rice grains

This invention relates to an apparatus for evaluating the quality of rice grains. The apparatus comprises a near infrared spectrometer having a band-pass filter and detectors for detecting the intensity of reflected light from the sample rice; a control device having a memory for storing various values and a calculator for performing various calculations; indicating device for displaying or printing the various calculated values; and a sample case for being filled with the sample rice and being disposed at the measuring portion within the near infrared spectrometer. The apparatus is capable of measuring the content percentages of pre-selected constituent or constituents, such as, of protein, either amylose or amylopectin and moisture of the rice grains, calculating a quality evaluation value of the sample rice based on the measured and calculated values and powers established for the preselected constituents, and displaying the calculated evaluation value of the sample rice.

Optical communication systems using fabry-perot cavities

This invention is a new type of Fabry-Perot cavity, and an optical communication system using such a cavity. The inventive Fabry-Perot cavity comprises both a waveguiding portion (43) and a nonwaveguiding portion (52,53). In this manner, tunable cavities of desirable mid-range length, necessary to obtain required free spectral ranges, may be fabricated with minimal diffraction losses otherwise associated with cavities of such length. The cavity length may be varied using, for example, piezoelectric elements, and the various cavity elements may be aligned and connected, using fiber connector technology.

Spectrometer and microspectroscopic system

Spectrum imaging method and system

本发明公开了一种用于重建对象的光谱数据的高光谱成像系统和方法。该系统包括：检测器的像素矩阵；像素矩阵前方的可调色散单元；和控制系统。该控制系统包括：控制器，所述控制器用于在n个图像采集过程调谐色散单元以提供色散单元的n个不同的、部分重叠的光谱透射轮廓；以及控制单元，所述控制单元与检测器进行数据通信、并配置为和可操作用于分别处理由n个图像采集过程中的像素矩阵生成的n个图像数据块，每个图像数据块指示由像素矩阵检测的光谱图像，并且对应于色散单元的不同光谱透射轮廓，所述控制单元并确定对象的重建光谱数据。

Variable monochromatic uniform calibration source

Systems for generating uniform monochromatic electromagnetic radiation that include an electromagnetic radiation source and a bandpass filter assembly to filter electromagnetic radiation emitted by the electromagnetic radiation source. The systems also include an optical integrating sphere to receive the filtered electromagnetic radiation and to uniformly scatter the filtered electromagnetic radiation within the optical integrating sphere, wherein the optical integrating sphere comprises an output to emit the uniformly scattered, filtered electromagnetic radiation.

Tunable variable bandpass optical filter

A variable bandwidth tunable optical filters comprised of two transparent optical substrates, upon each of which is deposited a linearly variable multilayer interference filter coating which varies in total thickness from end to end in a wedged fashion. This wedge imparts a corresponding variation of the center wavelength of the filter bandpass with respect to the linear position of the coated filter substrates. The variable bandpass tunable filter can be adjusted to a specific center wavelength by moving the filter pair together linearly through the incident beam. The bandwidth of the filter pair is maximized when the two filters are spectrally aligned, and is determined by the bandwidth of the individual filters. The variable bandwidth of the tunable filter can be adjusted by introducing a relative linear offset between the linearly variable filter pair.

Hyperspectral quantitative imaging cytometry system

本发明涉及发光的高光谱检测，具体地，涉及使用辐射源激发的固相样本的发光检测。

Raman Spectroscopy Based Assay For Both Low and High Abundant Biomolecules in a Biological Fluid Sample

A system and method for assaying high and low abundant biomolecules within a biological fluid sample is provided. The method includes: a) placing a biological fluid sample in contact with a first nanostructure surface; b) interrogating the sample with a light source, the sample in contact with the first nanostructure surface, the interrogation using a SERS technique; c) detecting an enhanced Raman scattering from at least one high abundant biomolecule type and producing first signals representative thereof; d) placing the sample in contact with a second nanostructure surface having a targeting agent that targets a low abundant biomolecule; e) interrogating the sample with the light source using the SERS technique; f) detecting the enhanced Raman scattering from the low abundant biomolecules and producing second signals representative thereof; and g) assaying the biological fluid sample using the first signals and the second signals.

Spectral information measuring device of body

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.

Device for examining the optical spectral properties of a substance

Methods and systems for chemical composition measurement and monitoring using a rotating filter spectrometer

The invention relates to methods and sys-tems for measuring and/or monitoring the chemical com-position of a sample (e.g., a process stream), and/or de-tecting specific substances or compounds in a sample, using light spectroscopy such as absorption, emission and fluorescence spectroscopy. In certain embodiments, the invention relates to spectrometers with rotating nar-row-band interference optical filter(s) to measure light intensity as a function of wavelength. More specifically, in certain embodiments, the invention relates to a spec-trometer system with a rotatable filter assembly with a position detector rigidly attached thereto, and, in certain embodiments, the further use of various oversampling methods and techniques described herein, made particu-larly useful in conjunction with the rotatable filter assem-bly. In preferred embodiments, the rotatable filter is tilted with respect to the rotation axis, thereby providing sur-prisingly improved measurement stability and signifi-cantly improved control of the wavelength coverage of the filter spectrometer.

Hyperspectral quantitative imaging cytometry system

The present invention relates to hyperspectral detection of luminescence and, in particular, to the detection of luminescence from solid phase samples which are stimulated with radiation sources.

Hybrid Spectral Imager

본 발명은 응시-스펙트럼 스캐닝 및 비디오 스냅샷 스펙트럼 이미징 모드들 둘 모두에서 동작하는 하이브리드 및 스캐닝/스냅샷 스펙트럼 이미저를 개시한다. 선택가능한 임계 스펙트럼 대역들의 세트에서의 스냅샷 스펙트럼 이미징 동작은 공간 해상도를 손상시키지 않으면서 머신 러닝-기반 추정 및 전체 초분광 큐브의 비디오-레이트 디스플레이에 대한 기반을 포함한다. 응시형 스캐닝 모드에서 동작할 시에, 개시된 하이브리드 스펙트럼 이미저는, 초분광 큐브 샘플링을 완료할 때까지, 주어진 튜닝 단계에서 그리고 복수의 튜닝 단계들에 대해 협대역 이미지들의 세트들을 획득한다. 스캐닝 동작은, 수집된 스펙트럼들에 존재하는 중복 정보가 폐기되도록 스냅샷 동작을 최적으로 구성하기 위해 사용될 수 있다. 개시된 하이브리드 스펙트럼 이미저는 소형화 및 저전력 동작에 민감한 실시예들을 포함하여, 모바일 폰 및 컴퓨터 플랫폼들로의 통합을 허용한다. 본 발명은 비파괴 테스팅, 실시간 스펙트럼 및 화학적 맵핑, 비침습적 진단 및 스펙트럼 사진을 적어도 부분적으로 포함하는 애플리케이션들을 다루도록 의도된다. The present invention discloses a hybrid and scanning/snapshot spectral imager that operates in both gaze-spectral scanning and video snapshot spectral imaging modes. The snapshot spectral imaging operation in a set of selectable critical spectral bands includes a basis for machine learning-based estimation and video-rate display of the entire hyperspectral cube without compromising spatial resolution. When operating in the gaze scanning mode, the disclosed hybrid spectral imager acquires sets of narrowband images at a given tuning step and for a plurality of tuning steps until it completes hyperspectral cube sampling. A scanning operation may be used to optimally configure a snapshot operation such that redundant information present in the collected spectra is discarded. The disclosed hybrid spectral imager allows for integration into mobile phone and computer platforms, including embodiments sensitive to miniaturization and low power operation. The present invention is intended to address applications comprising, at least in part, non-destructive testing, real-time spectral and chemical mapping, non-invasive diagnostics and spectral photography.

Spectral imaging method and system

本发明公开了一种用于重建对象的光谱数据的高光谱成像系统和方法。该系统包括：检测器的像素矩阵；像素矩阵前方的可调色散单元；和控制系统。该控制系统包括：控制器，所述控制器用于在n个图像采集过程调谐色散单元以提供色散单元的n个不同的、部分重叠的光谱透射轮廓；以及控制单元，所述控制单元与检测器进行数据通信、并配置为和可操作用于分别处理由n个图像采集过程中的像素矩阵生成的n个图像数据块，每个图像数据块指示由像素矩阵检测的光谱图像，并且对应于色散单元的不同光谱透射轮廓，所述控制单元并确定对象的重建光谱数据。

Multi-mode light field imaging system using exposure conditions and filter position

Light sensor with an adjustable spectral characteristic

A light sensor comprises optical filters, an interference filter and a photoelectric converting element which receives and photoelectrically converts light which has passed through the optical filters and the interference filter. An incident angle of the incident light on the interference filter can be changed so as to realize a desirable spectral sensitivity in a combination of the optical filters, the interference filter and the photoelectric converting element. The incident angle can be changed by a mounting structure that can rotate about an optical axis.

Device for evaluation of rice quality

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Spectrometer incorporating an electroactive polymer

A spectrometer comprises a spindle, a filter, an electrical source and an electroactive polymer in communication with the electrical source and in cooperation with the filter. The spectrometer is suitably a wavelength modulation spectrometer or a derivative spectrometer. The filter is suitably an oscillating interference filter or a reciprocating linear variable filter. Rotational motion of the filter upon the spindle is suitably provided by stimulation of the electroactive polymer. The spectrometer is suitably disposed in a downhole sonde.

Spectrum Image Processing Method, Spectrum Image Processing System and Control Unit

물체의 스펙트럼 데이터의 재구성에 사용하기 위한 하이퍼 스펙트럼 영상처리 시스템 및 방법이 제공된다. 상기 시스템은 검출기의 픽셀 매트릭스; 픽셀 매트릭스의 전방에 있는 동조 가능한 분산 유닛; 및 제어 시스템을 포함한다. 제어 시스템은, n회의 이미지 포착 세션들 동안 분산 유닛을 동조시켜, 분산 유닛의 n개의 상이한 부분적으로 중첩되는 스펙트럼 투과 프로파일들을 제공하기 위한 제어기; 및 검출기와 데이터 통신 상태에 있고, 상기 n회의 이미지 포착 세션들에서 각각 픽셀 매트릭스에 의해 생성된 n개의 이미지 데이터 부분들을 처리하도록 구성되어 동작 가능한 제어 유닛으로서, n개의 이미지 데이터 부분들의 각각은, 픽셀 매트릭스에 의해 검출되고 분산 유닛의 다른 스펙트럼 투과 프로파일에 대응하는 스펙트럼 이미지를 나타내고, 물체의 재구성된 스펙트럼 데이터를 결정하는, 제어 유닛을 포함한다. Provided are a hyperspectral image processing system and method for use in reconstruction of spectral data of an object. The system comprises a pixel matrix of detectors; A tunable dispersion unit in front of the pixel matrix; And a control system. The control system includes a controller for tuning the distribution unit during n image capture sessions to provide n different partially overlapping spectral transmission profiles of the distribution unit; And a control unit in data communication with a detector, the control unit being configured and operable to process the n image data portions generated by the pixel matrix in the n image capture sessions, each of the n image data portions being a pixel. A control unit, which is detected by the matrix and represents a spectral image corresponding to another spectral transmission profile of the dispersion unit, and determines the reconstructed spectral data of the object.

System and method for 4-D hyperspectral imaging

描述了用于高光谱成像的系统和方法。高光谱成像系统(300)包括：样本架(370)，被配置为保持样本；光源(3010)，被配置为发射具有一个或多个波长的激发光(402)；二维成像器件(380)；以及光学系统。该光学系统包括：第一空间光调制器(320a)；第一色散元件(340a)；以及第二色散元件(340b)。其中该光学系统被配置为：(i)使用第一空间光调制器(320a)将激发光(402)构造成在样本中的焦平面的共轭平面处的预定二维激发图案；(ii)使用第一色散元件(340a)光谱色散激发光(404)；(iii)使用激发图案(406)照射样本，在焦平面内用沿着第一横向方向色散的具有一个或多个波长的激发图案(406)来照射样本；(iv)从样本收集发射光(408)；(v)使用第二色散元件(340b)光谱色散所收集的发射光(408)；以及(vi)将所收集的发射光(410)聚焦提供给成像器件(380)，使得光谱色散的发射光(410)沿着第二横向方向光谱色散。

Optical filter, optical filter module, and photometric analyzer

本发明提供了一种滤光器、滤光器模块以及光分析装置，该滤光器具备：固定基板；可动基板，与固定基板相对；第一反射膜，设置在固定基板的与可动基板相对的面上；第二反射膜，设置在可动基板上，隔着间隙与第一反射膜相对；第一电极，覆盖所述第一反射膜，延伸至第一反射膜的外周的外侧的范围而形成；以及第二电极，设置在可动基板的与固定基板相对的面上，并与第一电极的一部分相对，其中，第一电极由透光性材料形成，第一电极与第二反射膜电连接，处于等电位。

Single-channel gas concentration measurement method and apparatus using a short-resonator Fabry-Perot interferometer

A single-channel gas concentration measurement method and apparatus. According to the method, a radiant source is employed to generate a measuring signal, the measuring signal is subsequently directed to a measurement object containing a gas mixture to be measured, the measuring signal is subsequently bandpass filtered using at least two passband wavelengths, and the filtered measuring signals are detected by a detector. According to the invention, the bandpass filtering step is implemented by a single electrostatically tunable, short-resonator Fabry-Perot interferometer.

Tunable filter with wavelength monitor

There is provided a tunable filter with a wavelength monitor, that comprises a wavelength selector 3, a separator for separating a part of a transmitted light beam or a reflected light beam when a wavelength is swept by the wavelength selector, and a monitor 6 for monitoring a part of the separated light beam.

Hybrid laser-induced breakdown spectroscopy system

A LIBS system to detect constituent elements of interest within a sample from plasma light resulting from irradiation of this sample is presented. The LIBS system has a hybrid configuration which provides both a low-resolution spectrum of the plasma light covering a broad spectral range, and a high-resolution spectrum of the same plasma light over a narrow spectral range centered on a spectral line or feature of a constituent element of interest of the sample. In some implementations, the LIBS system has a portable design and can perform onsite sample analyses.

Systems and methods for 4-D hyperspectral imaging

Systems and methods for hyperspectral imaging are described. In one implementation, a hyperspectral imaging system includes a sample holder configured to hold a sample, an illumination system, and a detection system. The illumination system includes a light source configured to emit excitation light having one or more wavelengths, and a first set of optical elements that include a first spatial light modulator (SLM), at least one lens, and at least one dispersive element. The illumination system is configured to structure the excitation light into a predetermined two-dimensional pattern at a conjugate plane of a focal plane in the sample, spectrally disperse the structured excitation light in a first lateral direction, and illuminate the sample in an excitation pattern with the one or more wavelengths dispersed in the first lateral direction.

spectral device

Die Aufgabe besteht darin, einen Änderungsbereich selektiver Wellenlängen einfach zu erweitern, ohne eine Vorrichtung zu vergrößern. Eine Spektralvorrichtung 1 der vorliegenden Erfindung enthält vier Bandpassfilter 11a bis 11d, durch die ein Licht L2 von einer Lichtquelle 3 entsprechend einem Einfallwinkel des Lichtes L2 in einem Wellenlängenbereich selektiv durchgelassen wird, sowie einen plattenförmigen Drehtisch 10, in dem die Bandpassfilter 11a bis 11d aufrechtstehend auf einer Hauptfläche 10a installiert sind, und der um einem Dreh-Mittelpunkt C1 entlang der Hauptfläche 10a gedreht werden kann, wobei die vier Bandpassfilter 11a bis 11d jeweils so angeordnet sind, dass Licht-Einfallebenen 12 oder Licht-Austrittsebenen 13 in Bezug auf Linien geneigt sind, die den Dreh-Mittelpunkt C1 auf der Hauptfläche 10a des Drehtischs 10 und Mittelpunkte 15a und 15d der Bandpassfilter 11a bis 11d verbinden. The task is to simply expand a range of changes in selective wavelengths without enlarging a device. A spectral device 1 of the present invention includes four bandpass filters 11a to 11d through which a light L2 from a light source 3 is selectively transmitted according to an angle of incidence of the light L2 in a wavelength range, and a plate-shaped turntable 10 in which the bandpass filters 11a to 11d stand upright a main surface 10a are installed and which can be rotated about a rotation center C1 along the main surface 10a, the four bandpass filters 11a to 11d each being arranged such that light incidence planes 12 or light exit planes 13 are inclined with respect to lines that connect the rotation center C1 on the main surface 10a of the turntable 10 and center points 15a and 15d of the bandpass filters 11a to 11d.

Fabry-Perot scanning and nutating imaging coherent radiometer

Spectral device

本发明的目的在于不会使装置大型化而且容易扩大选择波长的可变范围。本发明的分光装置（1）具备使来自光源（3）的光（L2）在对应于光（L2）的入射角的波长范围内选择性地透过的四个带通滤波器（11a～11d）、和在主面（10a）上立设有带通滤波器（11a～11d）且能够沿着主面（10a）在旋转中心（C 1 ）的周围旋转的平板状的旋转台（10），四个带通滤波器（11a～11d）分别配置成光入射面（12）或光射出面（13）相对于连结旋转台（10）的主面（10a）上的旋转中心（C 1 ）与主面（10a）上的该带通滤波器（11a～11d）的中心点（15a～15d）的线倾斜。

Hyperspectral imaging arrangement

An arrangement for hyperspectral imaging, comprising an imaging sensor (170,270); a band-pass filter element (130,230): at least one imaging optics element (120,160,220,260) configured to form an image on the imaging sensor (170,270); and a first adjustable multi passband filter (150a,255); wherein the first (150a,255) adjustable multi passband filter is configured to be adjusted by tilting.

Optical communication system with Fabry-Perot resonator.

Systems and methods for 4-d hyperspectrial imaging

Systems and methods for hyperspectral imaging are described. A hyperspectral imaging system comprises: a sample holder configured to hold a sample; a light source configured to emit excitation light having one or more wavelengths; a two-dimensional (2-D) imaging array; and an optical system comprising: a first element comprising a first dispersive element or a first diffractive element; and a second element comprising a second dispersive element or a second diffractive element; wherein the optical system is configured to (i) structure the excitation light, using the first element, into a spectrally dispersed two-dimensional excitation pattern at a focal plane in the sample or a conjugate plane of the focal plane; (ii) use the excitation pattern to illuminate the sample with the one or more wavelengths dispersed along a first direction within the focal plane; (iii) collect, from the sample, emission light; (iv) spectrally disperse, using the second element, the collected emission light; and (v) provide the collected emission light in-focus to the imaging array such that the collected emission light is spectrally dispersed along a second direction.

Hyperspektrikuvausjärjestely

Arrangement adapted for spectral analysis

An arrangement ("A1') adapted for a spectral analysis, having a light transmitting means (10, 2a), a delimited space (11) in the form of a cavity serving as a measuring cell and defining an optical measuring distance ("L"), a light sensing means (12) for detecting radiation (4) passing said optical measuring distance ("L") from said light transmitting means (10), and a unit (13), connected at least to said light sensing means (12) and performing the spectral analysis. Beams of radiation from the light transmitting means are made to pass through an optical band-pass filter (3f) at different angles of incidence. The filter is structured so as to pass a wavelength in dependence of the angle of incidence. A first chosen wavelength component is separated from a second wavelength component, each being received in its opto-electric means (3b, 3b') - Said unit is adapted for detecting and calculating n occurring radiation intensity for each such wavelength component.

Spectroscopic apparatus

A spectroscopic apparatus which is compact in size and performs high-precision light-splitting with a large angular dispersion. An optical input-processing section outputs a filtered transmitted light, using a bandpass filter that transmits only wavelength bands at one period of an input light, and collects the filtered transmitted light to generate a collected beam. An optic includes a first reflection surface and a second reflection surface which are high but asymmetric in reflectivity, and causes the collected beam incident thereon to undergo multiple reflections within an inner region between the first reflection surface and the second reflection surface, to thereby cause split beams to be emitted via the second reflection surface,. A received light-processing section performs received light processing of the beams emitted from the optic. A control section variably controls at least one of a filter characteristic of the bandpass filter and an optical length through the optic.

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.

Methods and systems for chemical composition measurement and monitoring using a rotating filter spectrometer

The invention relates to methods and systems for measuring and/or monitoring the chemical composition of a sample (e.g., a process stream), and/or detecting specific substances or compounds in a sample, using light spectroscopy such as absorption, emission and fluorescence spectroscopy. In certain embodiments, the invention relates to spectrometers with rotating narrow-band interference optical filter(s) to measure light intensity as a function of wavelength. More specifically, in certain embodiments, the invention relates to a spectrometer system with a rotatable filter assembly with a position detector rigidly attached thereto, and, in certain embodiments, the further use of various oversampling methods and techniques described herein, made particularly useful in conjunction with the rotatable filter assembly. In preferred embodiments, the rotatable filter is tilted with respect to the rotation axis, thereby providing surprisingly improved measurement stability and significantly improved control of the wavelength coverage of the filter spectrometer.

Optical device for deflecting a light beam and inelastic scattering spectrometer comprising such a device

L’invention concerne un dispositif optique de déviation d’un faisceau lumineux (1) comprenant :- un premier élément réflectif (4) plan, disposé de manière à réfléchir un faisceau lumineux entrant (2) en un faisceau lumineux réfléchi (5), s’étendant dans un premier plan (11), ledit faisceau lumineux entrant et ledit faisceau lumineux réfléchi définissant un plan d’incidence ; et- un deuxième élément réflectif (6) plan, disposé pour réfléchir ledit faisceau lumineux réfléchi en un faisceau lumineux sortant (3),  s’étendant dans un deuxième plan (12) transverse au plan d’incidence ;ledit premier plan et ledit deuxième plan étant sécants selon une droite d’intersection (D) et formant entre eux un angle dièdre (BETA), ledit premier élément réflectif et ledit deuxième élément réflectif sont solidairement mobiles en rotation autour d’un axe de rotation (10) sensiblement confondu avec ladite droite d’intersection. Figure d’abrégé : figure 1. The invention relates to an optical device for deflecting a light beam (1) comprising:- a first planar reflective element (4), arranged so as to reflect an incoming light beam (2) into a reflected light beam (5), extending in a first plane (11), said incoming light beam and said reflected light beam defining a plane of incidence; and- a second planar reflective element (6), arranged to reflect said reflected light beam into an outgoing light beam (3), extending in a second plane (12) transverse to the plane of incidence;said first plane and said second plane being secant along a line of intersection (D) and forming between them a dihedral angle (BETA), said first reflective element and said second reflective element are integrally movable in rotation around an axis of rotation (10) substantially coinciding with said line of intersection. Abstract Figure: Figure 1.

Detection device and method thereof

一種檢測裝置，包括發光元件、光檢測元件、至少一反射式光學薄膜元件以及控制單元。發光元件用以提供激發光束，其中主發光波長落於激發波段範圍內的部分激發光束在照射待測物後產生螢光光束。光檢測元件用以接收主發光波長落於檢測波段範圍內的部分螢光光束。控制單元與至少一反射式光學薄膜元件耦接。控制單元控制至少一反射式光學薄膜元件用以濾除入射光束的部分波段範圍，且入射光束為激發光束與螢光光束的至少其中一者。一種用於前述檢測裝置之檢測方法亦被提出。

Method and system for quantifying biomarker of a tissue

The present disclosure relates to a method and a system for quantifying a biomarker of a biological tissue. Two spectral sub-intervals are determined from a plurality of images of the tissue acquired at discrete wavelengths within a main wavelength interval using an imaging sensor in a manner such that the combination of the image data in the at least two spectral sub-intervals are correlated with a clinical variable of interest. The tissue is illuminated using one or more light sources with wavelengths within the at least two spectral sub-intervals. A measurement is of the light reflected by the tissue is acquired using an imaging sensor; and a measure of the biomarker of the tissue is calculated using the acquired measurement. The main wavelength interval is broader than each of the at least two spectral sub-intervals and at least one spectral confounder causing a spectral variability of the acquired image is present in the tissue.

Optical wavelength power meter

Provided is an optical wavelength power meter for simultaneously measuring an optical wavelength and optical power in an optical communication system or a mobile communication system. The optical wavelength power meter includes an optical input unit, an optical unit, a display unit, and a measurement circuit unit. The optical input unit receives a light with multi-wavelength from a measurement target. The optical unit filters a light with multi-wavelength input from the optical input unit into a light with a single-wavelength band in response to a control signal. The display unit displays the measured optical wavelength and optical power. The measurement circuit unit controls the optical unit, receives a light with each single-wavelength band filtered at the optical unit to calculate optical power for each wavelength band, and displays the optical power on the display unit. Therefore, the optical wavelength power meter can be conveniently used for measuring an optical wavelength and power in the installation and maintenence of an optical communication system, greatly reducing the operation time needed for optical measurement and remarkably improving the operation environment. In addition, the optical wavelength power meter requires a small number of optical components and is inexpensive. Furthermore, the optical wavelength power meter is adequate to the miniaturization because of the simplified structure, and has the good extensibility of an optical wavelength band and the good extensibility of multi-channel due to high density of wavelength multiplexing.

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.

Downhole uses of electroactive polymers

Hemispherical detector

A hemispherical detector comprising a plurality of photodetectors arranged in a substantially contiguous array, the array being substantially in the shape of a half-sphere, the half-sphere defining a closed end and an open end, the open end defining a substantially circular face. Also provided is a method for constructing a hemispherical detector comprising the steps of making a press mold of the desired shape of the hemispherical detector, pouring a material into the press mold to form a cast, finishing the cast to remove any defects, coating the cast with a coating material, and attaching a plurality of photodetectors to the cast.

Absorptiometers

Hybrid-imaging spectrometer

Downhole uses of electroactive polymers

A downhole actuator comprising a electroactive polymer, an advancement device, and an electrical source for stimulating the electroactive polymer. The advancement device is motivated by stimulation of the electroactive polymer. The electroactive polymer can be stimulated by the electrical source. The embodiments of the actuator can be utilized in subterranean downhole environments. Alternatively, the device can comprise a downhole acoustic source comprising an electroactive polymer.

Integrated computational element with multiple frequency selective surfaces.

Una herramienta de análisis óptico incluye un elemento computacional integrado (ICE). El ICE incluye múltiples capas apiladas a lo largo de un primer eje. Los materiales constitutivos de las capas son eléctricamente conductores y se encuentran diseñados con los patrones correspondientes. Un arreglo de los patrones, uno con respecto a los otros, se relaciona con una característica de una muestra.

Method and system for quantifying biomarker of a tissue

The present disclosure relates to a method and a system for quantifying a biomarker of a biological tissue. Two spectral sub-intervals are determined from a plurality of images of the tissue acquired at discrete wavelengths within a main wavelength interval using an imaging sensor in a manner such that the combination of the image data in the at least two spectral sub-intervals are correlated with a clinical variable of interest. The tissue is illuminated using one or more light sources with wavelengths within the at least two spectral sub-intervals. A measurement is of the light reflected by the tissue is acquired using an imaging sensor; and a measure of the biomarker of the tissue is calculated using the acquired measurement. The main wavelength interval is broader than each of the at least two spectral sub-intervals and at least one spectral confounder causing a spectral variability of the acquired image is present in the tissue.

Mirror arrangement for an interferometer arrangement, interferometer arrangement and method for producing a mirror arrangement

本发明提供了一种用于干涉仪装置（10）的反射镜装置（1），其包括：上下平行地并且彼此相距反射镜层间距（d23）地布置的第一反射镜层（2）和第二反射镜层（3），其中，所述反射镜层间距（d23）在第一和第二反射镜层（2、3）之间形成中间腔（5），其中，所述中间腔（5）包括气体或真空；至少一个至少部分地在第一和第二反射镜层（2、3）之间延伸的间隔结构（4），其中，所述间隔结构（4）包括与第一和/或第二反射镜层（2、3）相同或不同的材料。

Multichromatic calibration method and device

A Multichromatic Calibration (MC) method of at least a spectral sensor which is one of a list comprising at least a spectrometer, a multispectral sensor, a hyperspectral sensor, a spectral camera, a color camera. The method comprises a. generating a plurality of different multichromatic spectra, wherein i. a spectrum from the plurality of different multichromatic spectra contains light intensity measurable by the at least one spectral sensor and by a reference spectral device, and ii. a spectrum from the plurality of different multichromatic spectra contains light centered around at least two different wavelengths and is configured to be integrated during an exposure time of a single measurement from any of the at least one spectral sensor or the reference spectral device; b. measuring each multichromatic spectrum of the plurality of different multichromatic spectra with the reference spectral device and the at least one spectral sensor; and from all data of the measured multichromatic spectra, compute a transfer function which relates a response of the at least one spectral sensor to a corresponding response of the reference spectral device, without measuring the spectral response of the at least one spectral sensor.

使用窄带光学滤波器的高分辨率单光电二极管光谱仪

本申请涉及使用窄带光学滤波器的高分辨率单光电二极管光谱仪。光学设备可以包括窄带光学滤波器，该窄带光学滤波器用于接收在选定入射角下的光束，其中通过在光学设备中包括的转向元件来使该光束在选定入射角下由窄带光学滤波器接收；以及输出与光束相关联的经过滤的光束，其中经过滤的光束的波长取决于所述光束在窄带光学滤波器上的选定入射角。光学设备可以包括光电二极管以在经过滤的光束被窄带光学滤波器输出之后接收经过滤的光束的至少一部分。

Spectroscopic device, optical multiplex device and method, and optical add-drop multiplex apparatus

用于光谱仪系统的线性温度校准补偿

在示例方法中，向样本区域发射光，并且在干涉仪处接收样本光。样本光的子集从干涉仪被透射到检测器。透射样本光的子集包括确定参考温度和与样本光的子集的波长范围对应的参考电压。透射样本光的子集还包括确定环境温度，确定与参考温度和环境温度之间的差对应的偏置电压，以及向干涉仪施加与参考电压和偏置电压之和对应的输入电压。由检测器测量样本光的子集，并且基于测量结果确定光的光谱分布。

Spectroscopic analysis device with tunable filters for spectral sensing

Method and apparatus for producing calibrated spectral imaging devices

A method for calibrating a spectral imaging device (500) comprises: - providing first calibration light (LB1CAL1), which has first calibration spectrum (I_MPBF), which has a plurality of stable spectral peaks at known wavelengths (λ₀₁, λ₀₂, λ₀₃), - coupling the first calibration light (LB1CAL1) to the spectral imaging device (500), - obtaining a first measured profile (MSPEC1) of the first calibration light (LB1CAL1) by recording first detector pixel signals (S_R) during scanning a control parameter (V_d) of a Fabry-Perot interferometer (FPI1) of the spectral imaging device (500), - obtaining a second measured profile of the first calibration light (LB1CAL1) by recording second detector pixel signals (S_G) during scanning the control parameter (V_d), - determining a first simulated profile (SIMSPEC1) from the first calibration spectrum (I_MPBF) by using previously measured spectral quantum efficiency (Q_R) of first detector pixels (P0), by using previously measured spectral transmittance function (T_FP,PRE), and by using first calibration data (fₖ, gₖ, hₖ), - determining a second simulated profile from the first calibration spectrum (I_MPBF) by using previously measured spectral quantum efficiency (Q_R) of second detector pixels (P1), by using the previously measured spectral transmittance function (T_FP,PRE), and by using the first calibration data (fₖ, gₖ, hₖ), and - modifying the first calibration data (fₖ, gₖ, hₖ) until the simulated profiles (SIMSPEC1) match with the corresponding measured profiles (MSPEC1) according to one or more matching criteria.

Linear temperature calibration compensation for spectrometer systems

In an example method, light is emitted towards a sample region, and sample light is received at an interferometer. A subset of the sample light is transmitted from the interferometer to a detector. Transmitting the subset of the sample light includes determining a reference voltage corresponding to the range of wavelengths of the subset of sample light, and a reference temperature. Transmitting the subset of sample light also includes determining a temperature of an environment, determining a bias voltage corresponding to a difference between the reference temperature and the temperature of the environment, and applying, to the interferometer, an input voltage corresponding to the sum of the reference voltage and the bias voltage. The subset of the sample light is measured by the detector, and a spectral distribution of light is determined based on the measurements.

Spectrometer device and method for producing a spectrometer device

A spectrometer device includes an optical interference filter which is designed to filter specific wavelength ranges of an incident light beam on passage through the optical interference filter. The spectrometer device also includes a detector device which is designed to detect the filtered light beam. Further, the spectrometer device includes a focusing device with a reflective surface. The focusing device is designed to focus the filtered light beam onto the detector device by reflection on the surface.

Microcavity array for spectral imaging

Tunable filter arrays (100) include an array of liquid crystal (LC) tunable Fabry-Perot (FP) microcavities. The microcavities are defined by first and second reflectors (114,116) and an LC layer (115) situated between the reflectors. The tunable filter is secured to an image sensor array (120) so that the LC tunable microcavities are coupled to respective photodetectors of the image sensor array. Patterned electrodes (130) are situated about the LC layer to tune the microcavities.

Spectroscope

Proposed is a spectroscope including a disperser configured to disperse incident signal light, wherein the disperser includes a bandpass filter configured to spectroscopically process the signal light by pivoting according to a driving signal and a light-receiving element configured to receive the signal light spectroscopically processed by bands and outputs a corresponding electrical signal.

波長選擇模組、照明系統及度量衡系統

本發明揭示一種用於一度量衡裝置之波長選擇模組。該波長選擇模組包含一或多個濾光器元件，該一或多個濾光器元件可操作以接收包含多個波長之一輸入輻射光束以提供對一對應輸出輻射光束之一波長特性之選擇性控制。該一或多個濾光器元件中之至少一者包含至少兩個線性可變濾光器。

波长选择模块、照射系统和量测系统

描述了一种用于量测设备的波长选择模块。该波长选择模块包括：一个或多个滤波器元件，可操作为接收包括多个波长的输入辐射束，以提供对相应输出辐射束的波长特性的选择控制。所述一个或多个滤波器元件中的至少一个包括至少两个线性可变滤波器。

파장 선택 모듈, 조명 시스템 및 계측 시스템

계측 장치용 파장 선택 모듈이 개시된다. 대응하는 출력 방사선 빔의 파장 특성의 선택적 제어를 제공하게끔, 파장 선택 모듈은 다수의 파장을 포함하는 입력 방사선 빔을 수광하도록 동작가능한 하나 이상의 필터 요소를 포함한다. 상기 하나 이상의 필터 요소들 중 적어도 하나는 적어도 두 개의 선형 가변 필터를 포함한다.

Trace microanalysis microscope systems and methods

Thermal control in variable aperture mechanism for cryogenic environment

A shutter assembly (12) comprising a first planar member (70) and a second planar member (72) opposed from one another and forming a sleeve having a cavity (80) therebetween, the sleeve having a pair of side rails (78) adjacent the cavity along sides of the sleeve. A first shutter member (14) having a first end (92) is disposed in the cavity and slidingly disposed along one of the side rails, and a second shutter member (14) having a second end (92) is disposed in the cavity and slidingly disposed along the other side rail. The first end is opposed to the second end and is configured to be selectively advanced towards, and retracted from, the second end so as to define an aperture (15) therebetween having a first shape when disposed in a first position, and wherein the aperture has a second larger shape when the first end is disposed in a second position. The first shutter member and the second shutter member maintain a thermal contact with the side rails and the planar members in all positions. The shutter assembly is well suited to be used at a cryogenic temperature and in a high vacuum environment.

Electromagnetic radiation measurement device

A reconfigurable filter of an electromagnetic radiation sensor has a series of configurations. Each configuration allows transmission of a different wavelength band to the sensor. Adjacent configurations have overlapping wavelength bands defining differential sub-bands. Measurements made at each configuration are used to derive measurement values for the sub-bands, thereby increasing spectral resolution. A configuration 22 may additionally include a first differential sub-band 24 and optionally omit a second differential sub-band 26 compared to an adjacent configuration 20. A measurement value may be derived for the first differential sub-band from the difference between measurements made at the adjacent configurations, optionally adjusted for the second differential sub-band. A measurement made at a reference configuration in the series may relate only to a spectrally-invariant background signal, or be zero. The reconfigurable filter may be rotatable or slidable to vary an optical interference in a filter medium. The sensor may be an imaging sensor.

Wavelength selection module, illumination system and metrology system

Disclosed is a wavelength selection module for a metrology apparatus. The wavelength selection module comprises one or more filter elements being operable to receive an input radiation beam comprising multiple wavelengths to provide selective control of a wavelength characteristic of a corresponding output radiation beam. At least one of said one or more filter elements comprises at least two linear variable filters.

Spektrometervorrichtung und verfahren zum herstellen einer spektrometervorrichtung

Die Erfindung betrifft eine Spektrometervorrichtung (1a), mit: einem optischen Interferenzfilter (2), welches dazu ausgebildet ist, bestimmte Wellenlängenbereiche eines einfallenden Lichtstrahls (L) beim Durchgang durch das optische Interferenzfilter (2) zu filtern; einer Detektoreinrichtung (3), welche dazu ausgebildet ist, den gefilterten Lichtstrahl (L) zu detektieren; und einer Fokussiereinrichtung (4a) mit einer reflektierenden Oberfläche (5), wobei die Fokussiereinrichtung (4a) dazu ausgebildet ist, den gefilterten Lichtstrahl (L) durch Reflexion an der Oberfläche (5) auf die Detektoreinrichtung (3) zu fokussieren.

Vorrichtung und verfahren für eine fluoreszenzmessung für eine analyse einer biochemischen probe

Die Erfindung betrifft eine Vorrichtung (100) und ein Verfahren (600) für eine Fluoreszenzmessung bei einer Analyse einer biochemischen Probe (50), insbesondere bei einem Assay, wobei die Vorrichtung (100) mindestens einen verkippbaren Interferenzfilter (111, 112, 113, 114) umfasst, um eine Transmissionscharakteristik des Interferenzfilters (111, 112, 113, 114) auf die Probe (50) abzustimmen.

Hydrogen sulfide imaging system

Various embodiments disclosed herein describe an infrared (IR) imaging system for detecting a gas. The imaging system can include an optical filter that selectively passes light having a wavelength in a range of 1585 nm to 1595 nm while attenuating light at wavelengths above 1600 nm and below 1580 nm. The system can include an optical detector array sensitive to light having a wavelength of 1590 that is positioned rear of the optical filter.