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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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05-01-2012 дата публикации

Optical single-sideband transmitter

Номер: US20120002978A1

Автор: David William Smith, Graeme Douglas Maxwell, Peter Healey

Принадлежит: Centre for Integrated Photonics Ltd

A method for generating an optical single sideband signal comprising the steps of splitting an optical field into two parts and introducing a relative phase delay of +/−π/4 radians in each direction of transmission to one of the parts, intensity reflection-modulating each part with electrical signals having a relative phase delay of +/−π/2 radians and then recombining the reflection-modulated signals.

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Номер записи: 1

26-01-2012 дата публикации

Contact structure for a tunable liquid crystal optical device

Номер: US20120019761A1

Автор: Amir Tork, Aram BAGRAMYAN, Michael J. Nystrom, Rubin Ma, Viktor Konovalov, Vladimir Presniakov

Принадлежит: Lensvector Inc

A tunable liquid crystal optical device defining an optical aperture and having a layered structure. The device includes a film electrode formed on a surface of a first substrate and covered by a second substrate, and a contact structure filling a volume within the layered structure and contacting the film electrode. The contact structure is located outside of the optical aperture and provides an electrical connection surface much larger than a thickness of the film electrode, such that reliable electrical connections may be made to the electrode, particularly in the context of wafer scale manufacturing of such a device.

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Номер записи: 2

09-02-2012 дата публикации

Method and apparatus for detecting multiple optical wave lengths

Номер: US20120033217A1

Автор: Daniel Levner, Jingming Xu, Martin F. Fay

Принадлежит: Brown University Research Foundation Inc

Optical gratings that perform a number of functions at various wavelengths are formed by various methods that preserve spectral information within a wavelength band, the functions including: coupling radiation from one waveguide ( 7 a 3 ) to another ( 7 a 2 ), controllable gratings that operate on different wavelengths in response to external control signals.

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Номер записи: 3

23-02-2012 дата публикации

Optical circuit apparatus, method, and application

Номер: US20120045163A1

Автор: Hui Wu, Shang Wang

Принадлежит: UNIVERSITY OF ROCHESTER

A new photonic integrated circuit in the form of an optical pulse-train generator utilizes a time-interleaved architecture. The circuit can generate multiple optical pulses sequentially from a single trigger pulse, with the timing and amplitude of each pulse determined by circuit design. The circuit has application in optical arbitrary waveform generation and ultrafast electro-optic modulation.

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Номер записи: 4

15-03-2012 дата публикации

Manufacturing method for electrooptic element and optical deflector including electrooptic element

Номер: US20120063715A1

Автор: Jun Nakagawa, Koichiro Nakamura, Shuichi Suzuki

Принадлежит: Ricoh Co Ltd

An electrooptic element includes an optical waveguide layer made from a ferroelectric material and having a polarization inverted region of a predetermined shape having an optical incidence face and an optical exit face, and an upper electrode layer and a lower electrode layer formed on a top face and a bottom face of the optical waveguide layer, respectively, in which the ferroelectric material is magnesium-oxide-doped lithium niobate, and at least one of the optical incidence face and the optical exit face of the optical waveguide layer is formed in parallel with a crystal face of the ferroelectric material.

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Номер записи: 5

05-04-2012 дата публикации

Optical device, a method of manufacturing optical device, and exposure apparatus

Номер: US20120081772A1

Автор: Masahide Okazaki, Toshiaki Suhara

Принадлежит: Dainippon Screen Manufacturing Co Ltd

The ferroelectric substrate 11 of ferroelectric crystals, while being supported by the support plate 14 which is thicker than the ferroelectric substrate 11 , is integrated with the support plate 14 by letting the junction 13 mediate between one major surface S 1 A of the ferroelectric substrate 11 and one major surface S 1 B of the support plate 14 , and therefore, it is possible through the flat surface polishing to perform thinning of the ferroelectric substrate 11 , namely, the ferroelectric crystals, and as a result, it is possible to obtain the thin periodically poled structure. By the voltage application method, the domain inverted region is formed in the ferroelectric substrate 11 which is made thin.

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Номер записи: 6

26-04-2012 дата публикации

Method and device for providing electronic circuitry on a backplate

Номер: US20120099179A1

Автор: Karen Tyger

Принадлежит: Qualcomm Mems Technologies Inc

A MEMS-based display device is described, wherein an array of interferometric modulators are configured to reflect light through a transparent substrate. The transparent substrate is sealed to a backplate and the backplate may contain electronic circuitry fabricated on the backplane. The electronic circuitry is placed in electrical communication with the array of interferometric modulators and is configured to control the state of the array of interferometric modulators.

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Номер записи: 7

03-05-2012 дата публикации

Display Device

Номер: US20120105311A1

Автор: Benoit Bataillou, David Van Steenwinckel, Pascal Bancken, Radu Surdeanu, Viet Nguyen Hoang

Принадлежит: NXP BV

A display device comprises a substrate which carries an array of pixels. Each pixel comprises an array of apertures in the substrate, each aperture of the array having a maximum opening dimension less than the wavelength of the light to be transmitted through the aperture. The effective dielectric constant of the aperture and/or the dielectric constant of the substrate is varied, thereby to vary the light transmission characteristics of the pixel between transmission of at least one frequency in the visible spectrum and transmission of substantially no frequency in the visible spectrum.

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Номер записи: 8

03-05-2012 дата публикации

Liquid crystal lens array device, driving method thereof and image display device

Номер: US20120105753A1

Автор: Chiaki Kanai, Kenichi Takahashi, Sho Sakamoto, Yoshihisa Sato

Принадлежит: Sony Corp

A liquid crystal lens array device includes: a first electrode; a plurality of second electrodes arranged to face the first electrode, to which drive voltages having waveforms with phase differences therebetween are applied; and a liquid crystal layer arranged between the first electrode and the plural second electrodes, generating lens effects in accordance with potential differences between the drive voltage applied to the first electrode and drive voltages applied to the plural second electrodes.

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Номер записи: 9

24-05-2012 дата публикации

Balanced bypass circulators and folded universally-balanced interferometers

Номер: US20120128350A1

Автор: Milos Popovic

Принадлежит: Massachusetts Institute of Technology

The invention generally relates, in one aspect, to an interferometer system. The interferometer system includes a splitter/combiner element (SCE), a first bi-directional optical path, and a second bi-directional optical path.

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Номер записи: 10

07-06-2012 дата публикации

Optical 90-degree hybrid circuit

Номер: US20120141067A1

Автор: Hiroshi Takahashi, Kuninori Hattori, Toshikazu Hashimoto, Yohei Sakamaki, Yusuke Nasu

Принадлежит: Nippon Telegraph and Telephone Corp

The present invention provides an optical 90-degree hybrid circuit for reducing wavelength dependency of an IQ phase difference. An optical 90-degree hybrid circuit according to the present invention comprises a first demultiplexing optical coupler including a first and second input port, a second demultiplexing optical coupler including a third and fourth input port, first and second arm waveguides connected to the first and second input port, each having the same length, a third and fourth arm waveguides connected to the third and fourth input port, each having the same length, a 90-degree phase shift section installed in one of the first to fourth arm waveguides, a first optical coupler connected to the first and third arm waveguide, and a second optical coupler connected to the second and fourth arm waveguide, the light is inputted into the first and fourth input port or into the second and third input port.

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Номер записи: 11

21-06-2012 дата публикации

Stereoscopic Image Display and Method for Driving the Same

Номер: US20120154556A1

Автор: Cheunghwan An, Hyejin Kim, Jaewoo Lee

Принадлежит: LG Display Co Ltd

A stereoscopic image display includes a display panel, which displays first to nth view images produced by separating cameras from one another by a general distance between both eyes and photographing images of an object, where n is a natural number, a liquid crystal (LC) lens cell, which moves LC molecules existing in an LC layer between a lower substrate and an upper substrate of the display panel based on a voltage difference between a common electrode and each of electrodes to form an LC lens, an LC lens cell controller controlling a voltage supplied to each of the common electrode and the electrodes, and an LC lens cell driver supplying the voltage to each of the common electrode and the electrodes.

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Номер записи: 12

28-06-2012 дата публикации

Gradient refractive index liquid crystal optical apparatus and image display apparatus

Номер: US20120162592A1

Автор: Ayako Takagi, Shinichi Uehara

Принадлежит: Individual

A gradient index liquid crystal optical apparatus according to an embodiment includes: a first substrate having a first face; a second substrate having a second face opposed to the first face of the first substrate; a liquid crystal layer sandwiched between the first substrate and the second substrate; a plurality of first electrodes provided on the first face of the first substrate, and arranged along a first direction; a plurality of second electrodes provided on the first face of the first substrate to correspond to the first electrodes, the plurality of second electrodes being arranged along the first direction; a plurality of third electrodes provided on the first face of the first substrate and arranged along the first direction; and a fourth electrode provided on the second face of the second substrate.

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Номер записи: 13

19-07-2012 дата публикации

Semiconductor optical modulator and semiconductor mach-zehnder optical modulator

Номер: US20120183249A1

Автор: Kenji Sato, Tomoaki Kato

Принадлежит: NEC Corp

Provided are a semiconductor optical modulator and a semiconductor Mach-Zehnder optical modulator of high efficiency and high reliability. The semiconductor optical modulator 10 of the present invention includes a substrate 11; a first n-type cladding layer 12; a semiconductor optical modulation layer 13; a p-type cladding layer 14; a second n-type cladding layer 15; a passivation film 19; and an electric field-relaxing layer 16, wherein the first n-type cladding layer 12, the semiconductor optical modulation layer 13, the p-type cladding layer 14, and the second n-type cladding layer 15 are laminated on the substrate 11 in this order to form a waveguide structure, the passivation film 19 is arranged at the side surfaces of the waveguide structure, the electric field-relaxing layer 16 is interposed between the p-type cladding layer 14 and the second n-type cladding layer 15, and an impurity concentration of the electric field-relaxing layer 16 is lower than that of the p-type cladding layer 14 and that of the second n-type cladding layer 15

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Номер записи: 14

20-09-2012 дата публикации

Multi Color Display Panel and Method for Manufacturing the Same

Номер: US20120236391A1

Автор: Fumihiko Nakatsu, Ryuji Doi, Takashi Miyamoto, Tomoyuki Syukunami

Принадлежит: Toppan Printing Co Ltd

One embodiment of the present invention is a multi-color display panel, including: a transparent substrate, a color filter layer, a transparent electrode layer, a microcapsule layer, an adhesive layer, a rear electrode plate, wherein the transparent substrate, the color filter layer, the transparent electrode layer, the microcapsule layer the adhesive layer and the rear electrode plate are arranged in this order, the microcapsule layer is directly formed on the transparent electrode layer, the microcapsule layer has a structure in which microcapsules are dispersed in a binder resin, a dispersion liquid in which an electrophoresis particle is dispersed in a transparent dispersion medium is enclosed in the microcapsule, and an optical reflection property of the microcapsule changes according to a change of electric field by application of a voltage, and wherein the electrode plate has a rear substrate with a pixel electrode.

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Номер записи: 15

20-09-2012 дата публикации

Enhanced Low Inductance Interconnections Between Electronic and Opto-Electronic Integrated Circuits

Номер: US20120237160A1

Автор: Bipin Dama, David Piede, Kalpendu Shastri, Mark Webster

Принадлежит: LIGHTWIRE LLC

A configuration for routing electrical signals between a conventional electronic integrated circuit (IC) and an opto-electronic subassembly is formed as an array of signal paths carrying oppositely-signed signals on adjacent paths to lower the inductance associated with the connection between the IC and the opto-electronic subassembly. The array of signal paths can take the form of an array of wirebonds between the IC and the subassembly, an array of conductive traces formed on the opto-electronic subassembly, or both.

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Номер записи: 16

11-10-2012 дата публикации

Liquid crystal display device

Номер: US20120257127A1

Автор: Miyuki Sugita, Shinichiro Oka, Tatsuya Sugita, Terunori Saitou, Toshio Miyazawa

Принадлежит: Individual

In a liquid crystal display device, a first substrate adjacent to a liquid crystal display panel is subjected to rubbing in a first direction that is the same as a polarization axis direction of light emitted from the liquid crystal display panel, and a second substrate that interposes a liquid crystal layer with the first substrate is subjected to rubbing in a second direction at a right angle with the first direction. The second direction is made the same as the polarization axis direction of polarized sunglasses to allow visual recognition of the image using the polarized sunglasses. Electrode patterns formed by alternately providing narrow and wide electrodes are arranged on the upper and lower substrates in a direction at a right angle with each other so that the rubbing directions on the upper and lower substrates form a right angle to ensure stable 3D display.

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Номер записи: 17

11-10-2012 дата публикации

Tunable Wavelength Filter

Номер: US20120257130A1

Автор: Edwin Jan Klein, Rene Gerrit Heideman

Принадлежит: OCTROLIX BV

A wavelength filter based on a symmetric PLC circuit comprising an MZ filter-based demultiplexer, a waveguide resonator, and an MZ filter-based multiplexer is presented. The wavelength filter is tuned using pulse width modulated drive signals that enable fine wavelength control resolution. Embodiments in accordance with the present invention attain narrow spectral filtering capability over a wide wavelength tuning range. Further, embodiments in accordance with the present invention mitigate chromatic dispersion.

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Номер записи: 18

25-10-2012 дата публикации

Tri wavelength diffraction modulator and a method for modulation

Номер: US20120268805A1

Автор: Herb He Huang

Принадлежит: Lexvu Opto Microelectronics Technology Shanghai Co Ltd

The present invention relates to a tri wavelength diffraction modulator (TWDM) and a method of tri wavelength diffraction modulation. The tri wavelength diffraction modulator includes: a stationary substrate with a bottom electrode plate formed on top of the stationary substrate; a first electrode plate comprising a first suspended beam suspended in parallel above the stationary substrate and a first connection anchored onto the stationary substrate; and a second electrode plate comprising a second suspended beam suspended in parallel above the first electrode plate and a second connection anchored onto the stationary substrate. The diffraction modulator and the method for diffraction modulation are suitable to projection system.

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Номер записи: 19

25-10-2012 дата публикации

Spectrum filtering for visual displays and imaging having minimal angle dependence

Номер: US20120268809A1

Автор: Lingjie Jay Guo, Ting Xu

Принадлежит: University of Michigan

An optical spectrum filtering device, e.g., color filter, having reduced angle dependence is provided that comprises an interference filter assembly comprising a high refractive index dielectric material, such as a Fabry-Perot based resonator structure. The filter assembly is capable of transmitting a portion of an electromagnetic spectrum into the dielectric material to generate a filtered output with a predetermined range of wavelengths that displays minimal angle dependence, when viewed from a range of incidence angles ranging from normal (0°) to 90°. Methods of making minimal angle dependent optical spectrum filters and reducing angle dependence for such devices are also provided.

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Номер записи: 20

29-11-2012 дата публикации

Lens module and display apparatus having the same

Номер: US20120300042A1

Автор: Hae-Young Yun, Jin-Hwan Kim, Kyoung-Ju Shin, Kyung-Ho Jung, Seung-Hoon Lee, Seung-Jun Jeong, Ung-Gyu Min

Принадлежит: Samsung Display Co Ltd

A lens module includes a lens panel and a lens driving part. The lens panel includes a first substrate, a second substrate and a liquid crystal layer. The first substrate includes first electrodes and second electrodes alternately disposed thereon that partially overlap each other and are electrically insulated from each other. The second substrate is opposite to the first substrate. The liquid crystal layer is disposed between the first substrate and the second substrate. The lens driving part provides a substantially equal voltage to both ends of each of the first and second electrodes.

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Номер записи: 21

13-12-2012 дата публикации

Optical device, modulator module, and method for manufacturing the optical device

Номер: US20120314725A1

Автор: Akira Nakanishi, Hideo Arimoto, Hiroaki Hayashi, Kazunori Shinoda, Shigeki Makino

Принадлежит: Opnext Japan Inc

An optical device includes a ridge-like optical waveguide portion, a mesa protector portion that is arranged in parallel to the optical waveguide portion, a resin portion that covers upper parts of the mesa protector portion and is disposed at both sides of the mesa protector portion, an electrode that is disposed on the optical waveguide portion, an electrode pad that is disposed on the resin portion located at an opposite side to the optical waveguide portion with respect to the mesa protector portion, and a connection portion that is disposed on the resin portion and electrically connects the electrode to the electrode pad.

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Номер записи: 22

20-12-2012 дата публикации

Liquid crystal lens and display including the same

Номер: US20120320288A1

Автор: Jong-In Baek, Won-Sang Park

Принадлежит: Samsung Mobile Display Co Ltd

A liquid crystal lens which controls an optical path and a display which includes the liquid crystal lens. The liquid crystal lens includes a first electrode and a second electrode facing each other, a liquid crystal layer interposed between the first electrode and the second electrode and having flat top and bottom surfaces, and a dielectric layer interposed between the second electrode and the liquid crystal layer. The dielectric layer includes a section in which capacitance between top and bottom surfaces of the dielectric layer changes along a horizontal direction.

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Номер записи: 23

03-01-2013 дата публикации

Display apparatus and variable lens array

Номер: US20130002995A1

Автор: Daisuke Takama, Tsuyoshi Ohyama

Принадлежит: Sony Corp

A display apparatus includes: a display unit that displays a two-dimensional image; and a variable lens array disposed to face the display unit, wherein the variable lens array includes a variable phase difference layer that receives incident linearly polarized light polarized in a first direction and allows the linearly polarized light polarized in the same direction to exit or allows linearly polarized light polarized in a second direction switched from the first direction and different therefrom to exit, and an optically anisotropic layer that receives the light having exited out of the variable phase difference layer and works as a lens array for one of the light polarized in the first direction and the light polarized in the second direction whereas working as a transparent layer for the other light.

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Номер записи: 24

10-01-2013 дата публикации

Optical modulator

Номер: US20130011093A1

Автор: Hiroshi Yamazaki, Takashi Goh, Takashi Yamada, Yoshiyuki Doi

Принадлежит: Nippon Telegraph and Telephone Corp

Disclosed is an optical modulator which substantially lowers loss and has little attenuation in the intensity of an optical signal after modulation. The optical modulator includes a 1×2 RZ pulse carver wherein optical phase shifters used for modulation are arranged along two arm waveguides held between a 1×2 coupler and a 2×2 coupler, two interferometric modulators connected respectively to two output ports of the 2×2 coupler, and a 2×1 coupler for combining the outputs of the interferometric modulators.

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Номер записи: 25

17-01-2013 дата публикации

Method and Apparatus for Determining Bias Point of Modulator

Номер: US20130016418A1

Автор: Hong Yi, Jianhua Chen

Принадлежит: ZTE Corp

The disclosure discloses a method and an apparatus for determining a bias point of a modulator, wherein the method includes: adding pilot signals to the bias voltages of the modulator; adjusting the bias point of the modulator at a predetermined step and acquiring a first harmonic amplitude value corresponding to each bias point in a backlight detection current signal output by the modulator; and determining a bias point corresponding to the maximum value of the first harmonic amplitude values associated with multiple bias points as the bias point of the modulator. By virtue of the disclosure, the detection of a difference frequency signal can be eliminated, thereby reducing the complexity and cost of a periphery control circuit while ensuring the control accuracy, effectively improving the stability and reliability of the control process, and improving the modulation and transmission performance of optical signals in the whole system.

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Номер записи: 26

14-02-2013 дата публикации

Electronic eyeglass and liquid crystal lens production methods

Номер: US20130037202A1

Автор: Ayano Tanabe, Kenji Matsumoto, Tomohiro Ando

Принадлежит: Citizen Holdings Co Ltd

An object of the present invention is to provide electronic eyeglass and liquid crystal lens production methods that eliminate the need for forming a liquid crystal injection path in the liquid crystal lens, while making provisions so as to be able to sufficiently maintain a prescribed gap between substrates. The electronic eyeglass and liquid crystal lens production methods includes the steps of placing a sealing agent so as to form a closed planar region on at least one of first and second transparent substrates, dropping a liquid crystal material into an inside space enclosed by the sealing agent, bonding the other of the transparent substrates onto the one transparent substrate on which the liquid crystal material has been dripped, and filling a resin into a space created outside the sealing agent.

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Номер записи: 27

28-02-2013 дата публикации

Liquid Crystal Lens and 3D Display Device

Номер: US20130050595A1

Автор: Chihtsung Kang

Принадлежит: Shenzhen China Star Optoelectronics Technology Co Ltd

The present invention discloses a liquid crystal lens and a 3D display device thereof, said liquid crystal lens comprises a lower layer basal plate provided with an electrode and an upper layer basal plate provided with a counter electrode, the lower layer basal plate and the upper layer basal plate are mutually and oppositely arranged, and said electrode and the counter electrode are mutually insulated to form an electric field; and a liquid crystal layer arranged between said lower layer basal plate and the upper layer basal plate; the liquid crystals are vertical negative nematic LCs; the electrode of said lower layer basal plate or the counter electrode of said upper layer basal plate is provided with concave curved structures which make the distance between the electrode and the counter electrode smaller. Because the liquid crystal lens is provided with concave curved structures which can make the distance between the electrode and the counter electrode smaller, the field intensity in the electric field has gradience variation and the tilting angle of the liquid crystal molecules in the liquid crystal layer is also in gradience variation under the action of the electric field; therefore, the liquid crystal layer produces the refractive index in gradience variation; and the liquid crystal lens of which the refractive index is in gradience variation is formed and applied to the LCD to achieve the 3D display effect.

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Номер записи: 28

14-03-2013 дата публикации

Encapsulation of a temperature compensationing structure within an optical circuit package enclosure

Номер: US20130064494A1

Автор: Cristian Bolle, Mark Earnshaw

Принадлежит: Alcatel Lucent SAS

An optical circuit package comprising a substrate having a planar surface and an interferometric planar lightwave circuit located on the planar surface of the substrate. A refractive-index-compensation material is incorporated into a portion of the planar lightwave circuit such that an optical path through the planar lightwave circuit passes through the refractive-index-compensation material. The package also comprises a moisture or organic vapor sensitive electro-optic device located on the substrate. An inner hermetic can is located on the substrate, wherein the inner hermetic can encapsulates the portion of the planar lightwave circuit incorporating the refractive-index-compensation material. An outer hermetic can is located on or around the substrate, wherein the outer hermetic can encloses the planar lightwave circuit, the moisture or organic vapor sensitive electro-optic device and the inner hermetic can.

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Номер записи: 29

21-03-2013 дата публикации

Light control element

Номер: US20130071059A1

Автор: Hiroshi Murata, Junichiro Ichikawa, Masayuki MOTOYA

Принадлежит: SUMITOMO OSAKA CEMENT CO LTD

Provided is a light control element wherein stable operation at low driving voltage is possible. A light control element comprises a substrate ( 1 ) having an electro-optic effect, a plurality of optical waveguides ( 2 ) formed on said substrate ( 1 ), and a control electrode ( 3 ) which is formed on said substrate and controls the phase of the light that propagates through the optical waveguides ( 2 ), wherein the control electrode is provided with at least two resonance type electrodes ( 31, 32 ) having the same resonant frequencies, and power supply electrodes ( 41, 42 ) which supply a control signal to each resonance type electrode ( 31, 32 ); and the shape and forming position of each resonance type electrode ( 31, 32 ), and the supply position to each resonance type electrode ( 31, 32 ) according to the power supply electrode ( 41, 42 ) are set so as to allow odd mode coupling with respect to each other; and a control signal having the same phase or a prescribed phase difference is supplied to each resonance type electrode ( 31, 32 ) by the power supply electrode ( 41, 42 ).

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Номер записи: 30

28-03-2013 дата публикации

Optical deflector, optical deflection apparatus, and liquid crystal display apparatus using the optical deflector and the optical deflection apparatus

Номер: US20130077024A1

Автор: Katsuhiko Hayashi, Keiji Sugiyama, Shinichi Shikii

Принадлежит: Panasonic Corp

An optical deflector which deflects incident light, includes an optical deflection element which deflects the incident light when a distribution of internal refraction indexes of the optical deflection element is modulated. The light incident on the optical deflection element is emitted from the optical deflection element after passing through the optical deflection element a plurality of times.

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Номер записи: 31

28-03-2013 дата публикации

Method for producing a partially coherent beam with fast pattern update rates

Номер: US20130077147A1

Автор: Anatoly V. Efimov

Принадлежит: Los Alamos National Security LLC

A method and an apparatus for producing a partially coherent optical beam with a fast update rate are based on scanning a focused input beam across the input end of a multimode optical waveguide. The update rate of the partially coherent optical beam produced at the output of the multimode optical waveguide is increased with respect of the input beam scanning rate by a factor approximately equal to the ratio of the core size of the multimode optical waveguide to the focal spot diameter of the input optical beam. The apparatus may include an angular optical beam deflector based on an electrooptic material such as potassium tantalate niobate (KTN) crystal.

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Номер записи: 32

18-04-2013 дата публикации

Light deflector and liquid crystal display device using the same

Номер: US20130093663A1

Автор: Katsuhiko Hayashi, Motonobu Yoshikawa, Shinichi Shikii

Принадлежит: Panasonic Corp

A light deflector capable of deflecting light in a predetermined deflection direction and modulating the angle of deflection of light includes a plurality of liquid crystal deflection elements arranged in the predetermined deflection direction. In at least one pair of adjacent liquid crystal deflection elements, the dimension of one of the liquid crystal deflection elements in the predetermined deflection direction is different from the dimension of the other liquid crystal deflection element in the predetermined deflection direction.

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Номер записи: 33

18-04-2013 дата публикации

Optical Transmitter With Tunable Chirp

Номер: US20130094797A1

Автор: Kevin McCallion, Michael Deutsch, Xueyan Zheng

Принадлежит: Finisar Corp

An optical transmitter with chirp control includes an input polarizer having an input that receives an optical signal. The input polarizer polarizes the optical signal along an input polarization axis. A Mach-Zehnder modulator includes an optical input that is coupled to an output of the input polarizer and an electrical input that receives a modulation signal. The Mach-Zehnder modulator modulates the optical signal with the modulation signal. The input polarization axis of the input polarizer is chosen to achieve a desired chirp of the modulated optical signal. An output polarizer is coupled to the output of the Mach-Zehnder modulator. The output polarizer polarizes the modulated optical signal along a desired output polarization axis that combines TE and TM mode polarizations.

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Номер записи: 34

02-05-2013 дата публикации

Self-focusing liquid crystal cell and corresponding lcd

Номер: US20130107177A1

Автор: Chihtsung Kang

Принадлежит: Shenzhen China Star Optoelectronics Technology Co Ltd

The present invention provides a self-focusing liquid crystal cell includes a first glass substrate, a upper transparent electrode, a liquid crystal layer, a lower transparent electrode and a second glass substrate. The upper transparent electrode is shaped as a semi-sphere, while the lower transparent electrode is a planar electrode. A distance between a center of the upper transparent electrode and the lower transparent electrode is smaller than that between periphery of the upper transparent electrode and the lower transparent electrode is greater; the liquid crystal layer is stuffed with negative nematic liquid crystals. The present invention also provides a liquid crystal display. The self-focusing liquid crystal cell and the liquid crystal display equipped with the liquid crystal lens controlled by applied voltage dynamically adjusts the focal length of the liquid crystal lens so as to provide the consistent variation of the gradient refractive index from all angles of view.

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Номер записи: 35

16-05-2013 дата публикации

HIGH SPEED SOLID STATE OPTICAL SWITCHING SYSTEM USING BICONTINUOUS STRUCTURES

Номер: US20130120829A1

Автор: Corkery Robert William

Принадлежит: Technology Innovations, LLC

A bicontinuous optical switching structure includes a predetermined number of tunnels coated with a reflective material or a very smooth. The tunnels provide pathways from one side of bicontinuous optical switching structure to another. Each tunnel represents an entry point having a multitude of entry angles. Since the angle of entry dictates the exit point, a single tunnel can represent multiple entry/exit point pairs. A three-dimensional circuit may include a hyperbolic bicontinuous structure forming a substrate; circuits formed on a first surface of the hyperbolic bicontinuous structure; and electrically conductive traces formed between the circuits. The electrically conductive traces are formed two-dimensionally on the first surface of the hyperbolic bicontinuous structure. The electrically conductive traces are effectively three-dimensional traces between the circuits. 1. An optical switch comprising a plurality of bicontinuous structures , each bicontinuous structure having multiple potential optical entry points and each potential optical entry point having a corresponding optical exit point.2. The optical switch as claimed in claim 1 , wherein each bicontinuous structure is coated with an electro-optic coating.3. The optical switch as claimed in claim 1 , wherein each bicontinuous structure is coated with an electro-optic coating having reflective properties that change in response to certain light characteristics.4. The optical switch as claimed in claim 1 , wherein each bicontinuous structure is hyperbolic.5. The optical switch as claimed in claim 1 , wherein said bicontinuous structures form mutually interpenetrating labyrinths and contain a hyperbolically curved interface.6. The optical switch as claimed in claim 1 , wherein each potential optical entry point is a physical location on said bicontinuous structure.7. The optical switch as claimed in claim 1 , wherein each potential optical entry point corresponds to a different angle of incidence at a ...

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Номер записи: 36

23-05-2013 дата публикации

PHOTOREFRACTIVE COMPOSITION RESPONSIVE TO MULTIPLE LASER WAVELENGTHS ACROSS THE VISIBLE LIGHT SPECTRUM

Номер: US20130128339A1

Автор: Bogumila Rachwal, Flores Donald, Gu Tao, Jiang Zongcheng, Kathaperumal Mohanalingam, Lin Weiping, Siddiqui Ozair, Tillema Joshua, WANG Peng, Yamamoto Michiharu, Zheng Shijun

Принадлежит: NITTO DENKO CORPORATION

Described herein are compositions that are photorefractive upon irradiation by multiple laser wavelengths across the visible light spectrum. Embodiments of the photorefractive composition comprise a polymer, a chromophore, and a sensitizer, wherein the polymer comprises a repeating unit including at least a moiety selected from the group consisting of the formulae (Ia), (Ib) and (Ic), as defined herein. The photorefractive composition can be used in optical devices. 2. The composition of claim 1 , further comprising a sensitizer.4. The composition of claim 2 , wherein the sensitizer comprises a fullerene.5. The composition of claim 4 , wherein the fullerene is selected from the group consisting of optionally substituted C claim 4 , optionally substituted C claim 4 , optionally substituted C claim 4 , optionally substituted single-wall carbon nanotube claim 4 , and optionally substituted multi-wall carbon nanotube.6. The composition of claim 5 , wherein the fullerene is selected from the group consisting of [6 claim 5 ,6]-phenyl-C-butyricacid-methylester claim 5 , [6 claim 5 ,6]-phenyl-C-butyricacid-methylester claim 5 , and [6 claim 5 ,6]-phenyl-C-butyricacid-methylester.7. The composition of claim 2 , wherein the sensitizer is selected from the group consisting of optionally substituted phthalocyanine claim 2 , optionally substituted perylene claim 2 , optionally substituted porphyrin claim 2 , and optionally substituted terrylene.8. The composition of claim 1 , further comprising a combination of sensitizers claim 1 , wherein the combination of sensitizers is selected from the group consisting of optionally substituted fullerenes claim 1 , optionally substituted phthalocyanines claim 1 , optionally substituted perylenes claim 1 , optionally substituted porphyrins claim 1 , and optionally substituted terrylenes.9. The composition of claim 2 , wherein the composition comprises the sensitizer in an amount in the range of about 0.01% to about 5% claim 2 , by weight ...

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Номер записи: 37

23-05-2013 дата публикации

Laser oscillation apparatus

Номер: US20130128906A1

Автор: Junji Urakawa, Yosuke Honda

Принадлежит: Inter University Research Institute Corp High Energy Accelerator Research Organization

Provided is a laser oscillation apparatus capable of stabilizing resonance even when finesse of an optical resonator is increased and generating stronger laser light than that of a traditional apparatus by accumulating laser light in the optical resonator. The laser oscillation apparatus includes a laser light source which generates laser light for excitation, a fiber amplifier which generates laser light with a desired wavelength when the laser light generated at the laser light source for excitation is supplied, an optical resonator, an optical isolator which is interposed between the optical resonator and the fiber amplifier and which guides the laser light from the fiber amplifier to one side of the optical resonator while blocking laser light in the opposite direction, a circulation optical path which accelerates resonance as introducing laser light emitted from the other side of the optical resonator and returning the laser light to the optical resonator via the fiber amplifier and the optical isolator, and a modulator which performs amplitude modulation on the laser light in the circulation optical path.

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Номер записи: 38

30-05-2013 дата публикации

Compensation method, optical modulation system, and optical demodulation system

Номер: US20130135704A1

Автор: Yoshiharu Fujisaku

Принадлежит: Fujikura Ltd

An optical modulation system has a function to compensate an operating point drift, which occurs in an MZ optical modulator, by carrying out feedback control with use of a low frequency signal. A judgment section judges stability of feedback control. In a case where the feedback control is determined to be unstable, a low frequency signal generating section switches a frequency of the low frequency signal from a first frequency to a second frequency.

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Номер записи: 39

30-05-2013 дата публикации

NON-PLANAR RING RESONATOR FOR PREVENTING EXCITATION OF BACKWARD WAVE IN A PASSIVE TRAVELING WAVE OPTICAL RESONATOR

Номер: US20130135708A1

Автор: Richman Bruce A.

Принадлежит:

An optical traveling-wave resonator that includes a magneto-optically active member through which an optical beam propagates on a non-planar optical propagation path circuit. The resonator further includes at least one mirror in the optical propagation path circuit and a magnetic field generator for applying a magnetic field to the magneto-optically active member such that resonant optical frequencies of normal modes corresponding to traveling waves in opposite directions are substantially different. 1. An optical traveling-wave resonator comprising:a magneto-optically active member through which an optical beam propagates on a non-planar optical propagation path circuit;at least one mirror in the optical propagation path circuit; anda magnetic field generator for applying a magnetic field to the magneto-optically active member such that resonant optical frequencies of normal modes corresponding to traveling waves in opposite directions are substantially different.2. The resonator according to further comprising:means for coupling a fraction of the optical beam traveling in at least one direction into and out of the resonator.3. The resonator according to claim 1 , wherein the magnetic field generator is capable of varying the magnetic field applied to the magneto-optically active member.4. The resonator according to claim 1 , wherein at least a portion of optical beam reflections within the magneto-optically active member are total internal reflections.5. The resonator according to claim 2 , wherein the means for coupling a fraction of the optical beam traveling in at least one direction into and out of the resonator involves frustrated total internal reflection.6. The resonator according to claim 1 , wherein the at least one mirror is an external mirror claim 1 , and wherein a surface of magneto-optically active member through which the optical beam passes along its path to and/or from the external mirror is at or nearly at Brewster's angle given the polarization ...

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Номер записи: 40

06-06-2013 дата публикации

Sensitivity Improvement of Mach-Zehnder Modulator Bias Control

Номер: US20130141772A1

Автор: Zhiping Jiang

Принадлежит: FutureWei Technologies Inc

An apparatus comprising a circuit configured to couple to a nested Mach-Zehnder modulator (MZM), the circuit configured to receive a first signal proportional to a sum of an in-phase (I) component and a quadrature (Q) component, receive a second signal that is proportional to a difference between the I component and the Q component, and generate a difference signal as a difference in intensity between the first signal and the second signal, and a controller configured to provide a bias signal to the nested MZM to control a phase difference between the I component and the Q component, wherein the bias signal is based on the difference signal.

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Номер записи: 41

06-06-2013 дата публикации

Optical transmitter and optical transmission method

Номер: US20130142472A1

Автор: Toru Yamazaki

Принадлежит: Fujitsu Optical Components Ltd

An optical transmitter includes a first Mach-Zehnder, second Mach-Zehnders, a plurality of electrodes and a shift circuit. The first Mach-Zehnder is formed in an LN substrate. The second Mach-Zehnders are formed in branch waveguides of the first Mach-Zehnder. The plurality of electrodes are set in the second Mach-Zehnders and modulate lights input in the second Mach-Zehnders using an electric potential of the electrodes. The shift circuit causes a phase difference between the lights modulated in the above plurality of electrodes and output from the second Mach-Zehnders. The Mach-Zehnder synthesizes the above lights of different phases and generates an output signal.

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Номер записи: 42

13-06-2013 дата публикации

METHOD OF CREATING COLORED MATERIALS BY FIXING ORDERED STRUCTURES OF MAGNETITE NANOPARTICLES WITHIN A SOLID MEDIA

Номер: US20130146788A1

Автор: Ge Jianping, Kwon Sunghoon, Yin Yadong

Принадлежит: The Regents of the University of California

Compositions and methods wherein ordered structures of photonic nanocrystals are created in a liquid medium and then such structures are fixed by converting the liquid medium to a solid. In addition, compositions and methods of reversibly fixing such structures, so that ordered structures can be reversibly created in a liquid medium, converted to solid, and then converted back to liquid, wherein new ordered structures can be created and again fixed. 1. A method of creating colored materials , comprising:fixing ordered structures of magnetically responsive nanoparticles within a media, such that the ordered structures diffract light to create colors.2. The method of claim 1 , further comprising creating the ordered structures of magnetically responsive nanoparticles with an external magnetic field.3. The method of claim 2 , wherein the ordered structures of magnetically responsive nanoparticles are created in a liquid media and the ordered structures are fixed by converting the liquid media to a solid media.4. The method of claim 3 , wherein the liquid media is a photocurable solution.5. The method of claim 4 , further comprising fixing the ordered structures of magnetically responsive nanoparticles with an UV source having a wavelength of approximately 240 nm to approximately 365 nm.6. The method of claim 1 , wherein the ordered structures are created in a reversible media claim 1 , wherein the reversible media is reversible from a solid to a liquid claim 1 , such that the color can be changed.7. A method of generating multicolored patterns comprising:fixing a structural color from a superparamagnetic colloidal nanocrystal clusters (CNC); andintroducing a high resolution patterning of multiple structural colors using a single material.8. The method of claim 7 , further comprising repetitive tuning and fixing of the structural color from a mixture of superparamagnetic photonic crystals and photocurable resin.9. The method of claim 7 , wherein the superparamagnetic ...

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Номер записи: 43

13-06-2013 дата публикации

SURFACE PLASMON POLARITON MODULATOR

Номер: US20130148186A1

Автор: KIM Jineun, LEE Chang Won, PARK Yeonsang, SUH Hwansoo

Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

A surface plasmon polariton modulator capable of locally varying a physical property of a dielectric material to control a surface plasmon polariton. The surface plasmon polariton modulator includes a dielectric layer, including first and second dielectric portions, which is interposed between two metal layers. The second dielectric portion has a refractive index which varies with an electric field, a magnetic field, heat, a sound wave, or a chemical and/or biological operation applied thereto. The surface plasmon polariton modulator is configured to control one of an advancing direction, an intensity, a phase, or the like of a surface plasmon using an electric signal. The surface plasmon polariton modulator can operate as a surface plasmon polariton multiplexer or a surface plasmon polariton demultiplexer. 1. A surface plasmon polariton modulator comprising:a metal rod extending in a first direction;a first dielectric portion and a second dielectric portion which surround the metal rod, wherein the first and second dielectric portions alternate along the first direction; anda first electrode and a second electrode which are disposed on opposite sides of the second dielectric portion,wherein the first and the second dielectric portions are configured such that a surface plasmon incident on one of the first and the second dielectric portions travels along an interface between the first and the second dielectric portions and the metal rod.2. The surface plasmon polariton modulator of claim 1 , wherein the second dielectric portion has a surface which is inclined with respect to an initial traveling axis of the incident surface plasmon.3. The surface plasmon polariton modulator of claim 1 , wherein the second dielectric portion has a refractive index which varies with an electric field is applied to the second dielectric portion through the first and the second electrodes.4. The surface plasmon polariton modulator of claim 1 , configured to operate as one of:a scanner ...

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Номер записи: 44

20-06-2013 дата публикации

Signal Amplifier by Triple Mach-Zehnder Interferometers

Номер: US20130155411A1

Автор: Parks Allen D., Spence Scott E.

Принадлежит: United States Government as represented by the Secretary of the Navy

A signal amplifier is provided via a triple Mach-Zehnder interferometer (MZI) apparatus for determining intensity distribution at either a first port or a second port by a photon from a source. The first and second ports correspond to respective first and second directions. The MZI apparatus includes four beam-splitters disposed co-linearly in parallel between the source and the ports, six parallel mirrors, and first and second path projectors. Three of these mirrors are displaced along the first direction from the beam-splitters, while the remaining mirrors are displaced along the second direction. The path projectors conduct weak measurement of a photon occupation number and are disposed between the second beam-splitter and an adjacent downstream mirror. The output port is disposed beyond the fourth beam-splitter in the first direction. The intensity distribution at the output port is positive in response to one of the first measurement being positive and the second measurement being negative. 1. A signal amplifier via a triple Mach-Zehnder interferometer (MZI) apparatus for determining intensity distribution at an output port by a photon source , said MZI apparatus comprising:first, second, third and fourth beam-splitters disposed co-linearly in parallel between the source and first and second ports;first, second, third, fourth, fifth and sixth mirrors, said first, third and fifth mirrors disposed co-linearly in parallel and displaced along a first direction, said second, fourth and sixth mirrors disposed co-linearly in parallel and displaced along a second direction;a first path projector for conducting a first weak measurement of a first photon occupation number, said first path projector being disposed between said second beam-splitter and said third mirror effectively by displacing said third mirror; anda second path projector for conducting a second weak measurement of a second photon occupation number disposed between said second beam-splitter and said ...

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Номер записи: 45

04-07-2013 дата публикации

SWITCHABLE OPTICAL ELEMENTS

Номер: US20130170018A1

Автор: Domash Lawrence H.

Принадлежит: TRITON SYSTEMS, INC.

Optical filters capable of operating in the infra-red spectrum are disclosed. In one embodiment, a filter may be dynamically switched to provide one of two optical responses. One optical response may include the filter reflecting infra-red radiation across a range of wavelengths except at one or more wavelengths at which the filter absorbs the radiation. A second optical response may include the filter reflecting infra-red radiation across the entire range of wavelengths. In one embodiment, the switching may be caused by the physical displacement of a first filter component with respect to a second filter component. A method of switching the response of such a filter is also disclosed. Another embodiment of the filter may include one in which the optical response of the filter is effectively independent of either the incidence angle of the radiation impinging on it, or the polarization of the incident radiation. 1. A switchable optical element having an optical response to an incident radiation , the optical element comprising:a ground plane;a patterned nanostructure of metallic features disposed on a dielectric spacer layer electromagnetically coupled to the ground plane;a third component configured to be electromagnetically coupled to the patterned nanostructure; andone or more micromechanical actuator operably connecting the patterned nanostructure and the third component, the one or more micromechanical actuator being capable of providing vertical actuation of the third component relative to the patterned nanostructure,wherein the optical element optically responds in a first manner to the incident radiation when the third component is at a first vertical displacement from the patterned nanostructure, and optically responds in a second manner to the incident radiation when the third component is at a second vertical displacement from the patterned nanostructure.2. The optical element of claim 1 , wherein the incident radiation has at least one wavelength of ...

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Номер записи: 46

08-08-2013 дата публикации

Optical element with sub elements and an addressable mask

Номер: US20130201543A1

Автор: Roger Clarke

Принадлежит: Technology Partnership PLC

A light modulation device comprising an optical element and at least one addressable mask disposed adjacent to the optical element. The optical element comprises at least two sub-elements, each of the at least two sub-elements having at least one optical characteristic wherein at least one optical characteristic of one sub-element is discrete from at least one optical characteristic of another sub-element. The mask comprises at least two regions corresponding to the at least two sub-elements, each of the at least two regions being individually addressable to enable its corresponding sub-element to be light transmitting.

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Номер записи: 47

08-08-2013 дата публикации

OPTICAL ARRANGEMENT FOR CHANGING A MAGNIFICATION OR A REFRACTIVE POWER

Номер: US20130201551A1

Автор: Obrebski Andreas

Принадлежит:

Optical arrangement for varying a magnification or a refractive power in an optical path, wherein this optical arrangement as a whole encompasses at least two different possible magnifications or refractive powers, comprising a first optical element having a refractive power and a second optical element having a refractive power, characterized in that this optical arrangement comprises at least one optical switch, wherein the first optical element having a refractive power and the second optical element have a refractive power are spaced apart from one another. 1. An optical arrangement for varying a magnification or a total refractive power in an optical path , wherein this optical arrangement as a whole encompasses at least two different possible magnifications or total refractive powers , comprising a first optical element having a refractive power and a second optical element having a refractive power , characterized in that this optical arrangement comprises at least one optical switch , wherein the first optical element having a refractive power and the second optical element having a refractive power are spaced apart from one another.2. The optical arrangement according to claim 1 , characterized in that the first optical element having a refractive power or the first optical element having a refractive power and the second optical element having a refractive power are stationary.3. The optical arrangement according to claim 2 , characterized in that the stationary optical elements are immovable relative to the remainder of the arrangement.4. The optical arrangement according to claim 1 , characterized in that the first optical element having a refractive power and the second optical element having a refractive power can encompass at least two of the following three states as a function of the switching state of the at least one optical switch:(i) light from the optical path shines first through or at the first optical element having a refractive power and ...

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Номер записи: 48

08-08-2013 дата публикации

Electro-optic Devices

Номер: US20130202243A1

Автор: Marco Villa, Michele Belmonte, Stefano Balsamo

Принадлежит: OCLARO TECHNOLOGY LTD

An electro-optic device 200 comprising a substrate in which first and second waveguides 202, 203 are formed. The device also comprises first and second electrodes 204, 205 comprising an optically transparent conductive material and including primary portions 204 a, 205 a overlying the first and second waveguides 202, 203 for electrically biasing the first and second waveguides. The device is configured such that one of the first and second electrodes includes one other portion 204 b, 205 b arranged alongside the primary portion 204 a, 205 a of the other of the first and second electrodes. This arrangement improves the electro-optic efficiency of the device without the need for a buffer layer in the electrodes.

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Номер записи: 49

15-08-2013 дата публикации

Laser patterning of conductive films for electro-active lenses

Номер: US20130208347A1

Автор: Charles Willey, Joshua N. Haddock

Принадлежит: PixelOptics Inc

Systems and methods for manufacturing electro-active lenses including a peripheral edge, a discrete electro-active region, and at least two substrates. The at least two substrates include a layer of a transparent conductive material, that is laser cut to isolate regions required for establishing an electrical connection between the peripheral edge of the lens, from regions not required for establishing an electrical connection. Isolating the regions of the transparent conductive material required for establishing an electrical connection may include cutting patterns around an electrode of each of the substrates. The regions not required for establishing an electrical connection may be further cut into sections, which may be substantially band-shaped.

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Номер записи: 50

15-08-2013 дата публикации

Mach-zehnder optical modulator using a balanced coplanar stripline with lateral ground planes

Номер: US20130209023A1

Автор: Kelvin Prosyk

Принадлежит: Cogo Optronics Inc

A Mach-Zehnder optical modulator with a series push-pull traveling wave electrode uses a balanced coplanar stripline with lateral ground planes. Two signal electrodes extend along the center of the optical modulator adjacent and parallel to the optical waveguides in a series push-pull configuration. The ground planes run parallel to the signal electrodes, but are spaced laterally outward from the signal electrodes.

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Номер записи: 51

15-08-2013 дата публикации

Apparatus for ophthalmological, in particular refractive, laser surgery

Номер: US20130211387A1

Автор: Christof Donitzky, Peter Riedel

Принадлежит: WaveLight GmbH

In an apparatus for ophthalmological, in particular refractive, laser surgery a pachymetric measuring device based on an optical-coherence interferometric measuring process is controlled in such a way that the position of the measuring beam emitted by the measuring device follows movements of the eye to be treated. The eye movements are registered by means of a camera of an eye-tracker. For the purpose of changing the position of the measuring beam, a partially transmitting deflecting mirror, via which the measuring beam is routed onto the eye, is movably, in particular tiltably, arranged.

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Номер записи: 52

22-08-2013 дата публикации

DUAL POLARIZATION QUADRATURE PHASE SHIFT KEYING OPTICAL MODULATOR

Номер: US20130216175A1

Автор: ONISHI Yutaka

Принадлежит: Sumitomo Electric Industries, Ltd.

A DP QPSK optical modulator includes an input port; an optical branching unit; an optical modulation unit having first through fourth Mach-Zehnder interferometers; a first phase-change unit connected to the third Mach-Zehnder interferometer; a second phase-change unit connected to the fourth Mach-Zehnder interferometer; an optical multiplexer; and a multimode interference coupler including a multimode interference waveguide, first through third input ports, and an output port having a taper-shaped waveguide. The first Mach-Zehnder interferometer is connected to the first input port. One end of the optical multiplexer is connected to the second Mach-Zehnder interferometer and the third Mach-Zehnder interferometer via the first phase change unit. The other end of the optical multiplexer is connected to the second input port. The fourth Mach-Zehnder interferometer is connected to the third input port via the second phase-change unit. 1. A dual polarization quadrature phase shift keying (DP QPSK) optical modulator , comprising:an input port;an optical branching unit branching linearly-polarized light received from the input port into first through fourth linearly-polarized light components;an optical modulation unit connected to the optical branching unit, the optical modulation unit having first through fourth Mach-Zehnder interferometers that modulate the first through fourth linearly-polarized light components;a first phase-change unit connected to the third Mach-Zehnder interferometer, the first phase-change unit changing a phase of the third linearly-polarized light component;a second phase-change unit connected to the fourth Mach-Zehnder interferometer, the second phase-change unit changing a phase of the fourth linearly-polarized light component;an optical multiplexer coupling the second linearly-polarized light component and third linearly-polarized light component; anda multimode interference coupler including a multimode interference waveguide, first through ...

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Номер записи: 53

29-08-2013 дата публикации

Apparatus to manipulate colloidal particles in a bistable medium

Номер: US20130222889A1

Автор: Ben Shand Farber, Edmond Edward Routhier, M. Saif Islam, Pieter Stroeve

Принадлежит: Idea Zoo Inc

A device for manipulating colloidal particles in a bistable medium, the device includes a microcontroller, which stores a color and/or design scheme for a bistable medium, and a mechanism for changing the bistable medium from a first state to a second state.

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Номер записи: 54

19-09-2013 дата публикации

Transmitting Light with Lateral Variation

Номер: US20130240706A1

Автор: Kiesel Peter, Schmidt Oliver

Принадлежит:

Input light, such as from an optical sensor or stimulus-wavelength converter, includes one or more light or dark sub-bands. The input light is transmitted, such as through a transmissive layer or transmission component, to obtain effects due to transmission with lateral variation. A detector can, for example, obtain spectral information or other photon energy information about the sub-bands due to lateral variation. For each light or dark sub-band, a transmission component can, for example, provide a respective light or dark spot, and spot position can be used to obtain spectral information such as absolute wavelength or wavelength change. A photosensing component can sense or detect transmitted light or output photons, such as with a photosensor array or a position-sensitive detector. Circuitry can use photosensed quantities to obtain, e.g. a differential signal or information about time of wavelength change. 1. A detection system , comprising: a transmission component that includes at least one layer with laterally varying transmission properties, the transmission component configured to, when illuminated with input light, output one or more sub-bands of optical wavelengths at respective positions along an output surface of the transmission component, including at least a first sub-band output at a first position of the transmission component output surface and a second sub-band output at a second position of the transmission component output surface; and', 'a photosensing component configured to receive the one or more sub-bands of optical wavelengths output by the transmission component and to generate signals in response to the one or more sub-bands of optical wavelengths, including generating a first signal responsive to the first sub-band and the second sub-band; and, 'a detector comprising at least one layer, the detector includingcircuitry configured to determine changes in the first and second signals over time and to generate an output signal that ...

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Номер записи: 55

19-09-2013 дата публикации

LIGHTING OPTICAL SYSTEM AND PROJECTION DISPLAY DEVICE INCLUDING THE SAME

Номер: US20130242268A1

Автор: Saitou Hiroyuki

Принадлежит:

A lighting optical system includes a first light source for emitting first color light and second color light, and a second light source for emitting third color light. The first light source includes a semiconductor laser element that emits a linearly polarized laser beam, an excitation light generation unit for spatially and temporally separating the laser beam emitted from the semiconductor laser element to generate first excitation light and second excitation light, the excitation light generation unit including an active diffraction element that transmits the incident laser beam in two different directions to separate it into the first excitation light and the second excitation light having an output direction different from that of the first excitation light, a first phosphor that is excited by the first excitation light to emit first color light, and a second phosphor that is excited by the second excitation light to emit second color light. 1. A lighting optical system comprising:a first light source for emitting first color light and second color light; anda second light source for emitting third color light, a laser element that emits a linearly polarized laser beam;', 'an excitation light generation unit for spatially and temporally separating the laser beam emitted from the laser element to generate first excitation light and second excitation light;', 'a first phosphor that is excited by the first excitation light to emit the first color light; and', 'a second phosphor that is excited by the second excitation light to emit the second color light,', 'wherein the excitation light generation unit includes an active diffraction element that transmits the incident laser beam in two different directions to separate the laser beam into the first excitation light and the second excitation light having an output direction different from that of the first excitation light., 'wherein the first light source includes2. The lighting optical system according to claim ...

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Номер записи: 56

26-09-2013 дата публикации

DYNAMIC OPTICAL CROSSBAR ARRAY

Номер: US20130250420A1

Автор: Bratkovski Alexandre M., Fattal David A., Yang Jianhua, Zhang Minxian Max

Принадлежит:

A dynamic optical crossbar array includes a first set of parallel transparent electrode lines, a bottom set of parallel electrode lines that cross said transparent electrode lines, and an optically variable material disposed between said first set of transparent electrode lines and said bottom set of electrode lines. 1. A dynamic optical crossbar array comprising:a first set of parallel transparent electrode lines;a bottom set of parallel electrode lines that cross said transparent electrode lines; andan optically variable material disposed between said first set of transparent electrode lines and said bottom set of electrode lines.2. The optical crossbar array of claim 1 , in which said optically variable material comprises a Metal-Insulator Transition (MIT) material.3. The optical crossbar array of claim 2 , in which said MIT material comprises at least one of: a vanadium oxide material claim 2 , a niobium oxide material claim 2 , an iron oxide material claim 2 , a manganese oxide material claim 2 , and a titanium oxide material claim 2 , a tungsten oxide material and strontium titanate.4. The optical crossbar array of claim 1 , in which said optically variable material comprises a memristive material claim 1 , a semiconducting region of said memristive material being adjacent to said transparent electrode lines.5. The optical crossbar array of claim 1 , further comprising an electrical condition source to selectively apply an electrical condition between one of said transparent electrode lines and one of said bottom electrode lines.6. The optical crossbar array of claim 5 , in which said electrical condition is applied to crosspoints of said optical crossbar array such that a surface of said crossbar array forms an optical grating.7. The optical crossbar array of claim 5 , further comprising a control module to adjust optical properties of said optically variable material by adjusting said electrical condition applied at crosspoints within said optical crossbar ...

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Номер записи: 57

26-09-2013 дата публикации

Multi-port optical circulator system

Номер: US20130251299A1

Автор: Amit Mizrahi, Lina He

Принадлежит: Skorpios Technologies Inc

An optical circulator includes a first optical isolator including a first port and a second port and a plurality of optical isolators coupled to the second port of the first optical isolator. Each of the plurality of optical isolators comprise a first port and a second port.

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Номер записи: 58

03-10-2013 дата публикации

PHOTON SOURCE

Номер: US20130256504A1

Автор: Bennett Anthony John, Shields Andrew James, SKIBA-SZYMANSKA Joanna Krystyna, STEVENSON Richard Mark

Принадлежит:

An optical device comprising a quantum dot provided in a resonant confinement structure, an output from said confinement structure and a pulsed excitation source for said quantum dot, wherein the quantum dot is configured to allow the emission of photons having a first energy in response to a pulse from said excitation source, said resonant confinement structure providing optical confinement, the first energy being different to the resonant energy of the resonant confinement structure, the optical device further comprising a timing unit, said timing unit being configured to select photons which have been emitted from the quantum dot due to excitation by a pulse, the timing unit selecting photons emitted after the duration of the pulse which caused the emission of the photons. 1. An optical device comprising a quantum dot provided in a resonant confinement structure , an output from said confinement structure and a pulsed excitation source for said quantum dot , wherein the quantum dot is configured to allow the emission of photons having a first energy in response to a pulse from said excitation source , said resonant confinement structure providing optical confinement , the first energy being different to the resonant energy of the resonant confinement structure , the optical device further comprising a timing unit , said timing unit being configured to select photons which have been emitted from the quantum dot due to excitation by a pulse , the timing unit selecting photons emitted after the duration of the pulse which caused the emission of the photons.2. An optical device according to claim 1 , wherein the first energy is less than the energy of the resonant energy of the resonant confinement structure.3. An optical device according to claim 1 , wherein said resonant confinement structure is provided by a waveguide.4. An optical device according to claim 1 , wherein said resonant confinement structure comprises a cavity coupled to a quantum dot and said output ...

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Номер записи: 59

03-10-2013 дата публикации

LIGHT DEFLECTING ELEMENT

Номер: US20130258452A1

Автор: KAMIGUCHI Yuuzo, Kanamaru Masahiro, Sakurai Masatoshi, Sugawara Katsuya, Yusu Keiichiro

Принадлежит:

According to an embodiment, a light deflecting element includes a dielectric body, a first electrode, a second electrode, and a third electrode. Each of the second electrode and third electrode is configured to sandwich the dielectric body with the first electrode. The second electrode includes an electrode having a side that lies substantially orthogonal to an incident direction of a light beam, a side that is substantially parallel to the incident direction, and a side that intersects with the incident direction. The third electrode includes an electrode having a side that is aligned with the second electrode, a side that is substantially parallel to an incident direction of the light beam, and a side that intersects with the light beam, and that slopes in an opposite to that of the side of the second electrode that intersects with the light beam. 1. A light deflecting element comprising:a dielectric body having a first surface and a second surface facing each other, the dielectric body having an electro-optic effect;a first electrode disposed on the first surface; anda second electrode configured to sandwich the dielectric body with the first electrode so as to apply a voltage to the dielectric body, the second electrode being disposed on the second surface;a third electrode configured to sandwich the dielectric body with the first electrode so as to apply a voltage to the dielectric body, the third electrode being disposed on the second surface, wherein a side that is positioned on a light beam incident side of the dielectric body that allows the light beam to pass and that lies substantially orthogonal to an incident direction of the light beam,', 'a side that is substantially parallel to the incident direction of the light beam, and', 'a side that is positioned on the light beam outgoing side and that intersects with the light beam, and, 'the second electrode includes one or more electrodes each having'} a side that is aligned with the second electrode on the ...

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Номер записи: 60

03-10-2013 дата публикации

LIGHT DEFLECTING ELEMENT

Номер: US20130259417A1

Автор: KAMIGUCHI Yuuzo, Kanamaru Masahiro, Sakurai Masatoshi, Sugawara Katsuya, Yusu Keiichiro

Принадлежит:

According to an embodiment, a light deflecting element includes a dielectric body, a first electrode, and a second electrode. The second electrode is configured to sandwich the dielectric body with the first electrode so as to apply a voltage to the dielectric body. The second electrode includes orthogonal portions that are substantially orthogonal to an incident direction of a light beam passing through the dielectric body, parallel portions that are substantially parallel to the incident direction of the light beam. The orthogonal portions and the parallel portions are formed in an alternate manner on the light beam incident side of the dielectric body. The second electrode includes a linear sloping portion that slopes in a direction toward intersection with the incident direction of the light beam. The orthogonal portions, the parallel portions, and the linear sloping portion are formed integrally. 1. A light deflecting element comprising:a dielectric body having a first surface and a second surface facing each other, the dielectric body having an electro-optic effect;a first electrode disposed on the first surface; anda second electrode configured to sandwich the dielectric body with the first electrode so as to apply a voltage to the dielectric body, the second electrode being disposed on the second surface, wherein a plurality of orthogonal portions that are substantially orthogonal to an incident direction of a light beam passing through the dielectric body,', 'a plurality of parallel portions that are substantially parallel to the incident direction of the light beam, the orthogonal portions and the parallel portions being formed in an alternate manner on the light beam incident side of the dielectric body, and', 'a linear sloping portion that slopes in a direction toward intersection with the incident direction of the light beam, the linear sloping portion being provided on the light beam outgoing side of the dielectric body, and, 'the second electrode ...

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Номер записи: 61

17-10-2013 дата публикации

SYSTEMS AND APPARATUSES INCLUDING ALTERABLE CHARACTERISTICS AND METHODS OF ALTERING AND COORDINATING SUCH CHARACTERISTICS

Номер: US20130271809A1

Автор: Gerszberg Seth M.

Принадлежит: EMINVENT LLC

Systems, apparatuses, and methods are provided that include alterable characteristics and such alterable characteristics may be coordinated. Such systems, apparatuses, and methods may include wearable apparatuses and such alterable characteristics may relate to illumination conditions or coating colors. In one example, a wearable apparatus includes an output device such as an illumination device or coating that may be manually manipulated between two different conditions. In another example, two wearable apparatuses may each include an output device such as an illumination device or a coating, and operation of the two illumination devices or coatings may be coordinated. In a further example, operation of an apparatus may be controlled by a third party or venue. Still another exemplary system may include a capturing device for capturing a characteristic of an object and controlling an output device of an apparatus to operate with the same characteristic as the captured characteristic. 1. An apparatus comprising:an input device manually manipulatable to change the input device between a first input condition and a second input condition;a coating adapted to be a first color with the input device in the first input condition and a second color with the input device in the second input condition, wherein the first color is different than the second color; anda power source adapted to supply a first level of current to the coating with the input device in the first input condition and a second level of current to the coating with the input device in the second input condition, wherein the first level of current is different than the second level of current.2. The apparatus of claim 1 , wherein the input device is a mechanical actuator and is manually moveable between the first input condition and the second input condition.3. The apparatus of claim 1 , wherein the input device is one of a switch claim 1 , actuator claim 1 , dial claim 1 , and keypad manually ...

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Номер записи: 62

24-10-2013 дата публикации

Optical system and method

Номер: US20130278747A1

Автор: Dongmin Yang

Принадлежит: General Electric Co

An optical system in a video probe assembly includes a plurality of lenses configured to refract separate linearly polarized rays under different refractive indexes to form a plurality of different focal lengths. The optical system includes at least one light modulating element that modulates a polarization state of the linearly polarized rays passing through the at least one light modulating element in response to a control signal. The optical system includes a polarizer element that filters out some of the modulated linearly polarized rays passing through the polarizer element. A method of inspecting a target with an optical system of a video probe assembly is also provided.

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Номер записи: 63

31-10-2013 дата публикации

Voltage controlled microlens sheet

Номер: US20130286661A1

Автор: Matthew B. Sampsell, Robert L. Holman

Принадлежит: Qualcomm Mems Technologies Inc

This disclosure provides systems, methods and apparatus relating to implementations of an electrically controlled light conditioning sheet. In one aspect, the electrically controlled light conditioning sheet includes a planar electrode having a first conductor and a second conductor and a transmissive elastic layer. The transmissive elastic layer is configured to deform in response to a potential difference applied between the first and the second conductor and produce regions of optical refractive power. The angular spread and/or the radiation pattern of an incoming beam of light incident on the electrically controlled light conditioning sheet is altered by the action of the regions of optical refractive power produced by the applied potential difference.

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Номер записи: 64

21-11-2013 дата публикации

Assembly for Monitoring Output Characteristics of a Modulator

Номер: US20130306848A1

Автор: "DELLORTO Flavio", Balsamo Stefano, Cusmai Giuseppe, Villa Marco

Принадлежит: OCLARO TECHNOLOGY LIMITED

A photonic assembly is described. The assembly comprises a substrate. An optical modulator () in or on the substrate has an output port coupled to an output waveguide () mounted in or on the substrate. A spiller waveguide () is mounted in or on the substrate. The spiller waveguide () has an input end () physically separated from but proximate to the output waveguide () so as to collect light spilt from the output port or output waveguide (). The modulator () may be a MZI modulator. 1. A photonic assembly , comprising:a substrate;an optical amplitude modulator having at least two arms for transmitting light through an output combiner into an output port coupled to an output waveguide mounted in or on the substrate;two spiller waveguides mounted in or on the substrate, the spiller waveguides having input ends physically separated from but proximate to the output waveguide and located substantially equidistantly either side of the output waveguide so as to collect light spilt from the output port or output waveguide; anda photodetector coupled to both spiller waveguides so as to detect the total intensity of light passing along both spiller waveguides simultaneously.2. The assembly of claim 1 , wherein the input ends of the spiller waveguides are located proximate to the output port of the modulator claim 1 , the location being chosen so that claim 1 , when the modulator is configured such that light passing through the modulator interferes destructively and substantially no light is transmitted through the output port claim 1 , light radiated away from the output combiner through the substrate is coupled into the spiller waveguides.3. The assembly of claim 2 , wherein the location of the input ends of the spiller waveguides is optimised so that claim 2 , when the modulator is configured such that light passing through the modulator interferes constructively such that there is a maximum transmission through the output port claim 2 , substantially no light is coupled ...

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Номер записи: 65

21-11-2013 дата публикации

Integrated driver and related method

Номер: US20130308893A1

Автор: Angelo Contini, Massimo Pozzoni, Maurizio Zuffada

Принадлежит: STMICROELECTRONICS SRL

A driver circuit may include a first node (VA), and a first circuit to generate on the first node (VA) an inverted replica of an input signal (VIN) during driver switching between a first supply voltage (Vdd 1 ) and ground, the inverted replica having a threshold voltage value based upon a reference voltage (Vref) greater than the first supply voltage (Vdd 1 ). The driver circuit may include a cascode stage (M 3 ) to be controlled by the reference voltage (Vref) and to be coupled between a second supply voltage (Vdd 2 ) and the first node, a delay circuit (D) to generate a delayed replica of the input signal (VIN), an amplifier, and a switching network (M 5, M 6 ) to couple a control terminal of an active load transistor (M 9 ) either to one of the reference voltage (Vref) or to ground, based upon the input signal (VIN).

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Номер записи: 66

05-12-2013 дата публикации

PHOTOREFRACTIVE DEVICES HAVING SOL-GEL BUFFER LAYERS AND METHODS OF MANUFACTURING

Номер: US20130321897A1

Автор: Hsieh Wan-Yun, Lin Weiping, Simavoryan Sergey, WANG Peng, Yamamoto Michiharu

Принадлежит: NITTO DENKO CORPORATION

A photorefractive device () and methods of its manufacture are disclosed. The photorefractive device () comprises one or more transparent electrode layers (), one or more sol-gel buffer layers (), one or more polymer buffer layers (), and a photorefractive layer (). The one or more sol-gel buffer layer () is interposed between the one or more polymer buffer layer () and the one or more transparent electrode layer (). When a bias voltage is applied to the device (), the device () exhibits improvement in electric breakdown strength compared to a similar device without the one or more dielectric sol-gel buffer layers (). The device () can operate at high bias levels with quick rising and decay times and shows higher grating performance under single nanosecond pulse recording conditions. 1. A photorefractive device , which comprises:a transparent electrode layer;a sol-gel buffer layer;a polymer buffer layer; anda photorefractive layer;wherein the sol-gel buffer layer is interposed between the transparent electrode layer and the polymer buffer layer; andwherein the polymer buffer layer is interposed between the sol-gel buffer layer and the photorefractive layer.2. The photorefractive device of claim 1 , wherein the sol-gel buffer layer comprises a sol-gel material having a dielectric constant greater than about 5.0.3. The photorefractive device of claim 1 , or wherein the polymer buffer layer comprises a polymer selected from the group consisting of polymethyl methacrylate claim 1 , polyimide claim 1 , amorphous polycarbonate claim 1 , polyvinylcarbazole claim 1 , polyarylate and combinations thereof.4. The photorefractive device of claim 1 , wherein the refractive index of the polymer buffer layer is in the range of about 1.45 to about 1.7.5. The photorefractive device of claim 1 , wherein the thickness of the sol-gel buffer layer is in the range of about 0.1 μm to about 2 μm.6. The photorefractive device of claim 1 , wherein the thickness of the polymer buffer layer is ...

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Номер записи: 67

05-12-2013 дата публикации

Light modulation device for a display

Номер: US20130321899A1

Автор: Ralf Häussler

Принадлежит: SeeReal Technologies SA

A display comprising an observer window, which in 3D and/or 2D representation mode of a 3D scene can be adapted to changing eye positions. Several observers can use the display simultaneously. The display includes a light modulation device having an actuatable diffraction unit and a controllable spatial light modulator, in which a 3D scene is coded in an actuatable manner, and a control unit. An observer window can be generated using coherent light beams on alternating eye positions. The diffraction unit includes at least electrodes and a controllable material into which a prism and/or lens function and/or scatter function can be written as a diffraction grating with a phase progression in an at least one-dimensionally controllable manner.

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Номер записи: 68

19-12-2013 дата публикации

OPTICAL COMPONENT AND DISPLAY

Номер: US20130335649A1

Автор: Mather Jonathan, Smith Nathan James

Принадлежит: SHARP KABUSHIKI KAISHA

An optical component () is switchable between a directional mode and a 2-D mode. The optical component () comprising a lens array and an electro-optic layer, for example a liquid crystal layer, disposed in the path of light through the lens array. In the 2-D display mode the lens array has an optical effect on light passing through the component and the electro-optic layer at least partially nullifies the effect. For example the electro-optic layer may, in the 2-D display mode, scatter light or diverge light so as to nullify the focusing effect of the lens array. The optical component () may be disposed in the path of light through an image display panel () to form a display that may be switched between a directional display mode, eg a 3-D display mode, and a 2-D display mode by suitably switching the optical component (). 1. An optical component switchable between a directional mode and a substantially non-directional mode , the optical component comprising a lens array and an electro-optic layer disposed in the path of light through the lens array , wherein the electro-optic layer is disposed over a surface of the lens array and planarises , or substantially planarises , the surface of the lens array; and wherein in the non-directional mode the lens array and the electro-optic layer act such that the optical component has an optical effect on light passing through the component.2. An optical component as claimed in wherein claim 1 , in the non-directional mode claim 1 , the electro-optic layer is in a scattering mode.3. An optical component as claimed in wherein claim 1 , in the non-directional mode claim 1 , the electro-optic layer diverges light passing through it.4. An optical component as claimed in wherein claim 1 , in the non-directional mode claim 1 , the electro-optic layer has a refractive index that is greater than the refractive index of the lens array.5. An optical component as claimed in wherein the electro-optic layer is a liquid crystal layer.6. An ...

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Номер записи: 69

19-12-2013 дата публикации

LIGHT SOURCE APPARATUS AND PROJECTOR

Номер: US20130335710A1

Автор: MIURA Yuichi, OKAMOTO Masashi, SAMEJIMA Takanori, SHIMIZU Mikio

Принадлежит:

A coherent light source apparatus comprises a first optical system, which has a first light emission region formed by a coherent light source, and which projects light from the first light emission region to form a second light emission region, a light deflection unit which deflects light flux in connection with formation of the second light emission region; a second optical system, which forms a third light emission region in response to the light flux which has been deflected by the light deflection unit, a light mixing unit for mixing a component of an incident light angle and that of a position thereof, and a light deflection unit drive circuit for receiving a periodic optical deflection synchronization signal, thereby driving the light deflection unit, wherein the light deflection unit operates to continuously change a direction in which the light flux is deflected while synchronizing with the optical deflection synchronization signal. 2. The coherent light source apparatus according to claim 1 , wherein the light mixing unit (Fm) is an optical guide in which light is confined in a predetermined space and the light is repeatedly reflected therein so as to be guided.3. The coherent light source apparatus according to claim 1 , wherein the light mixing unit (Fm) is a fly eye integrator.4. The coherent light source apparatus according to claim 1 , wherein the second optical system (Ef) generates the third light emission region (Gf) which is conjugate to the second light emission region (Gu).5. The coherent light source apparatus according to claim 1 , wherein the second optical system (Ef) generates claim 1 , at a distance claim 1 , an image claim 1 , which is conjugate to the first light emission region (Gs) claim 1 , and generates a third light emission region (Gf) claim 1 , which is approximately conjugate to an exit pupil (Quo) of the first optical system (Eu) claim 1 , wherein the third light emission region (Gf) is continuously moved on the incident end (Pmi ...

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Номер записи: 70

26-12-2013 дата публикации

INSPECTION SYSTEM AND METHOD FOR FAST CHANGES OF FOCUS

Номер: US20130342893A1

Автор: Baer Adam, Feldman Haim, Morgenstein Boris, Naidis Roman

Принадлежит:

An inspection system includes a first focusing unit configured to perform fast focus changes to a first focusing function applied to an incident light beam. A traveling lens acousto-optic device is arranged to receive the light beam focused by the first focusing function and produce focused spots using a plurality of traveling lenses generated in response to radio frequency signals. The traveling lenses apply a second focusing function and the traveling lens acousto-optic device is arranged to alter the second focusing function at a fast rate. The inspection system also includes optics arranged to direct the focused spots onto an inspected object and to direct radiation from the inspected object to a sensor. 116.-. (canceled)17. A focusing unit , comprising:a core having multiple facets, wherein refractive indices of the core are responsive to an electric field applied on the core and the core is made of ultra violet durable material;a first set of electrodes coupled to a first facet of the core;a second set of electrodes coupled to a second facet of the core;wherein when the first and second set of electrodes induce an electrical field having a magnitude that has a substantially parabolic shape along a first direction, the core applies a first focusing function along the first direction on a first light beam that enters the core through an input facet of the core that differs from the first and second facets, the first direction being oriented along a propagation direction of the first light beam; andwherein fast changes in the electrical field result in fast changes in the first focusing function.18. The focusing unit according to claim 17 , wherein the core is made of one of: Potassium Di-deuterium Phosphate claim 17 , KHPO claim 17 , Ammonium Dihydrogen Phosphate and Silicone DiOxide.19. The focusing unit according to claim 17 , wherein a first one of the first and second sets of electrodes is arranged to induce an electrical field having a first magnitude that ...

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Номер записи: 71

09-01-2014 дата публикации

STEREOSCOPIC IMAGE CONTROL MODULE AND STEREOSCOPIC DISPLAY DEVICE

Номер: US20140009819A1

Автор: Kang Mu-Kai, Tseng Heng-Cheng, WANG I Fang, Wu Hsu-Ho, YU Chia Hua

Принадлежит:

A stereoscopic image control module that can be disposed on a display module to form a stereoscopic image display module is provided. The stereoscopic image control module includes a first substrate, a touch composite layer, and a grating composite layer. The first substrate has a first surface and a second surface opposite to the first surface, and the touch composite layer is disposed on at least one of the first surface and the second surface and includes a plurality of touch electrodes. The grating composite layer is disposed on the second surface and includes a plurality of grating control electrodes and a grating layer, wherein the grating control electrodes change a polarity of the grating layer to determine a display mode. 1. A stereoscopic image control module , comprising:a first substrate having a first surface and a second surface opposite to the first surface;a touch composite layer disposed on at least one of the first surface and the second surface, the touch composite layer comprising a plurality of touch electrodes; anda grating composite layer disposed on the second surface, the grating composite layer comprising a plurality of grating control electrodes and a grating layer.2. The stereoscopic image control module of claim 1 , wherein the touch composite layer further comprises:a first protection layer covering the touch electrodes disposed on the first surface.3. The stereoscopic image control module of claim 1 , wherein the touch electrodes are disposed on the first surface in a transverse direction and a longitudinal direction.4. The stereoscopic image control module of claim 1 , wherein some of the touch electrodes are disposed on the first surface claim 1 , and the rest of the touch electrodes are disposed on the second surface of the first substrate.5. The stereoscopic image control module of claim 4 , wherein an extending direction of the touch electrodes disposed on the first surface is perpendicular to an extending direction of the touch ...

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Номер записи: 72

09-01-2014 дата публикации

Optical transmitter, wavelength multiplexing transmission device and optical transmission method

Номер: US20140010530A1

Автор: Yuta Goebuchi

Принадлежит: NEC Corp

An optical transmitter includes: a modulator; an output light monitoring unit; and a control unit. The modulator includes a dividing unit dividing light inputted to the modulator into first and second branch lights; first and second modulation units performing phase modulation for the first and second branch lights, respectively; a rotator which rotates the polarization plane of one of the first and second modulated lights; and a polarization combining unit combining the first and second modulated lights. The output light monitoring unit monitors light intensity of the output of the polarization combining unit. The control unit controls at least one of the first and second modulation units, on the basis of a monitoring result by the output light monitoring unit. The control includes a light intensity control making the light intensity of the first and/or second modulated light smaller than a maximum value of a modulation curve light intensity.

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Номер записи: 73

16-01-2014 дата публикации

Slit Grating And Display Device

Номер: US20140016050A1

Автор: Huang Xiaomei, Li Fan

Принадлежит:

There are provided a slit grating and a display device. The passive slit grating according to embodiments of the invention comprises a plurality of grating structures. Each of the grating structures is symmetric about its axial line in a length direction, and an edge in the length direction for each of the grating structures has a non-linear shape. Among adjacent edges of any two of the grating structures that are adjacent, the position of a protrusion at one edge corresponds to the position of a recess at another edge. 1. A passive slit grating , comprising a plurality of grating structures ,wherein, each of the grating structures is symmetric about its axial line in a length direction, an edge in the length direction for each of the grating structures has a non-linear shape, and among adjacent edges of any two of the grating structures that are adjacent, a position of a protrusion at one edge corresponds to a position of a recess at another edge.2. The passive slit grating according to claim 1 , wherein claim 1 , the length direction of the grating structures is a first direction claim 1 , the plurality of grating structures are arranged at an interval along a second direction perpendicular to the first direction claim 1 , and respective axial lines in the length direction for the plurality of grating structures are parallel to each other.3. The passive slit grating according to claim 1 , wherein claim 1 , adjacent edges of any two of the grating structures that are adjacent in the passive slit grating have complementary shapes.4. The passive slit grating according to claim 1 , wherein claim 1 , each of the grating structures is symmetrical about its axial line along a width direction.5. The passive slit grating according to claim 4 , wherein claim 4 , the edge in the length direction for each of the grating structures has the shape of a polygonal line.6. The passive slit grating according to claim 5 , wherein claim 5 , the edge in the length direction for each of ...

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Номер записи: 74

16-01-2014 дата публикации

Wavelength selective optical switch

Номер: US20140016079A1

Автор: Yasuki Sakurai

Принадлежит: Santec Corp

A wavelength selective optical switch includes an incidence/emergence unit that includes an input port at which signal light made up of light of numerous wavelengths is incident and an output port at which light signals of selected wavelengths are emergent, a wavelength dispersion element that spatially disperses signal light according to a wavelength of the signal light, and synthesizes reflected light, a condenser element that condenses light dispersed by the wavelength dispersion element on a two-dimensional plane, a space phase modulator arranged so as to receive incident light deployed on an xy plane made up of an x-axis direction deployed according to wavelength and a y-axis direction orthogonal to the x-axis direction, and having numerous pixels arranged in a lattice on the xy plane, and a space phase modulator drive unit.

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Номер записи: 75

16-01-2014 дата публикации

Mach-Zehnder Modulator Drive Level Optimization

Номер: US20140016172A1

Автор: Lee DARDIS, Sunil Kumar Singh Khatana

Принадлежит: Oclaro Inc

A method for determining, by a modulator assembly, an optimal drive point for a Mach-Zehnder modulator (MZM). The modulator assembly applies an electrical modulation signal to the MZM to modulate an optical input signal and create a modulated optical output signal, the modulated optical output having a spectrum that includes a first and third harmonic. The modulator assembly measures the difference in magnitude between the first harmonic and the third harmonic as the amplitude of the electrical modulation signal is varied, and determines a value for the amplitude of the electrical modulation signal that corresponds to a maximum difference between the first harmonic and the third harmonic.

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Номер записи: 76

23-01-2014 дата публикации

Method for manufacturing optical semiconductor device

Номер: US20140021160A1

Автор: Hideki Yagi, Takamitsu Kitamura

Принадлежит: Sumitomo Electric Industries Ltd

A method for manufacturing an optical semiconductor device includes the steps of preparing a substrate product including a semiconductor layer, a mesa structure, and a protective layer; forming a buried layer composed of a resin on the substrate product; forming a first opening in the buried layer on the mesa structure; forming a second opening in the buried layer on the semiconductor layer; exposing the mesa structure and the semiconductor layer by etching the protective layer; forming a first electrode in the first opening; and forming a second electrode in the second opening. The step of forming the second opening includes a first etching step including etching the buried layer using a first resist mask for forming a recess and a second etching step including etching the buried layer using a second resist mask having an opening pattern which has an opening width not smaller than that of the recess.

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Номер записи: 77

23-01-2014 дата публикации

Observer tracking autostereoscopic display

Номер: US20140022619A1

Автор: Harrold Jonathan, Robinson Michael G., Woodgate Graham J.

Принадлежит:

A spatially multiplexed autostereoscopic display is arranged to provide landscape and portrait operation. Multiple optical windows may be provided by spatial and temporal multiplexing techniques. A fast response lens array pair is aligned with a fast response spatial light modulator, and synchronized to provide first and second sets of images with first and second respective directionalities to provide first and second sets of respective optical windows. The first and second sets of optical windows may each comprise two or more optical windows in each viewing lobe. The optical windows may be arranged with an inclination to the vertical of 25 degrees to 65 degrees. An observer tracking system may be arranged to direct left and right eye image data to the left and right eyes of an observer, respectively, for landscape and portrait orientations of the display. 1. A display device for an autostereoscopic display apparatus , the display device comprising:a spatial light modulator comprising an array of pixels;a first lens array and a second lens array, each aligned with the spatial light modulator and operable to direct light from spatially multiplexed sub-arrays of pixels into an array of at least three optical windows in a window plane, the optical windows of the first lens array being spatially offset from the optical windows of the second lens array; anda lens switching arrangement capable of causing the lens arrays to switch between operation in a first mode in which the first lens array operates and the second lens array has substantially no optical effect and a second mode in which the first lens array has substantially no optical effect and the second lens array operates.2. A display device according to claim 1 , wherein each array of optical windows comprises at least five optical windows.3. A display device according to claim 1 , wherein the optical windows of the first lens array have the same pitch as the optical windows of the second lens array and the ...

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Номер записи: 78

30-01-2014 дата публикации

Display Device Capable of Switching Between a Two-Dimensional Displaying Mode and Three-Dimensional Displaying Mode

Номер: US20140028932A1

Автор: Chia-Hua Yu, Chun-Chin Tseng, Dong Xian YU, Feng Wei KUO, I Fung WANG

Принадлежит: Hannstar Display Corp

A liquid crystal lens is disclosed, comprising a plurality of lens units, wherein each lens unit comprises a first substrate, a second substrate opposite to the first substrate, a liquid crystal layer disposed between the first substrate and the second substrate, an insulating layer disposed on the first substrate, and a first electrode and a first floating electrode disposed at opposite sides of the insulating layer, wherein the first electrode comprises a first portion neighboring a first side of the lens unit and a second portion neighboring a second side of the lens unit, and the first floating electrode comprises a first portion and a second portion, wherein the first portion of the first floating electrode is partially overlapped with the first portion of the first electrode, and the second portion of the first floating electrode is partially overlapped with the second portion of the first electrode

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Номер записи: 79

06-02-2014 дата публикации

Light Field Display Device and Method

Номер: US20140035959A1

Автор: Paul Lapstun

Принадлежит: Paul Lapstun

The present invention provides a light field display device ( 300 ) comprising an array of light field display elements ( 310 ) populating a display surface, each display element ( 310 ) comprising: a beam generator ( 522 ) for generating an output beam of light; a radiance modulator ( 524 ) for modulating the radiance of the beam over time; a focus modulator ( 530 ) for modulating the focus of the beam over time; and a scanner ( 504, 506 ) for scanning the beam across a two-dimensional angular field.

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Номер записи: 80

06-02-2014 дата публикации

Electro-Active Opthalmic Lens Having an Optical Power Blending Region

Номер: US20140036226A1

Автор: Ronald D. Blum, William Kokonaski

Принадлежит: E Vision Smart Optics Inc

A spectacle lens is disclosed. The disclosed lens provides a vision correcting area for the correction of a wearer's refractive error. The viewing correction area provides correction for non-conventional refractive error to provide at least a part of the wearer's vision correction. The lens has a prescription based on a wave front analysis of the wearer's eye and the lens can further be modified to fit within an eyeglass frame.

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Номер записи: 81

27-02-2014 дата публикации

Liquid-crystal-lens type light-modulating apparatus and liquid crystal display having the same

Номер: US20140055716A1

Автор: ZHOU Zhang

Принадлежит: BOE Technology Group Co Ltd

A liquid-crystal-lens type light-modulating apparatus and a liquid crystal display having the same are disclosed. The liquid-crystal-lens type light-modulating apparatus comprises: a first light-transmissive substrate, with a first electrode layer and a first alignment layer being provided sequentially on an upper surface thereof; a second light-transmissive substrate located over the first substrate, with a second electrode layer and a second alignment layer being provided sequentially on a lower surface thereof; and liquid crystal sandwiched between the first and second alignment layers, wherein at least one from the first and second electrode layers is formed as a patterned electrode, and the patterned electrode comprises: a plurality of electrode light-transmissive regions and a plurality of light-shielding regions, arranged at an interval therebetween; and the liquid-crystal-lens type light-modulating apparatus further comprises a shielding sheet provided above the second substrate, and the shielding sheet comprises: a plurality of shielding sheet light-transmissive regions and a plurality of shielding sheet light-shielding regions, arranged at an interval therebetween; and each of the shielding sheet light-shielding regions is located over one of the electrode regions in the patterned electrode, and has an area less than the area of an electrode region corresponding to it.

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Номер записи: 82

27-02-2014 дата публикации

Integrated Two-Dimensional Planar Optical Phased Array

Номер: US20140055832A1

Автор: Abiri Behrooz, AFLATOUNI Firooz, Hajimiri Seyed Ali

Принадлежит: California Institute of Technology

An optical phased array includes, in part, a multitude of optical signal emitters and a multitude of optical signal phase/delay elements each associated with and disposed between a different pair of the optical signal emitters. Each optical signal phase/delay element is adapted to cause a phase/delay shift between the optical signals emitted from its associated pair of optical signal emitters. Each optical signal phase/delay element is optically a ring resonator that includes a p-i-n junction. By varying the bias applied to the p-i-n junction, the phase/delay generated by the ring resonator is varied. Furthermore, each optical signal emitter is optionally an optical grating having a multitude of grooves. The groove lengths of the optical gratings are optionally selected so as to increase along the direction of travel of the input optical signal through the optical phase array. 1. An optical phased array comprising:a first array of N optical signal emitters, N being an integer greater than or equal to 2; anda first array of M optical signal delay elements, each optical signal delay element being associated with and disposed between a different pair of optical signal emitters and adapted to cause a phase/delay shift between optical signals emitted from its associated pair of optical signal emitters in response to a first input optical signal received by the optical phased array, wherein M is an integer greater than or equal to one.2. The optical phased array of wherein the phase/delay caused by each of the M optical signal delay elements is variable.3. The optical phased array of wherein the delays caused by at least a subset of the M optical signal phase/delay elements are varied so as to change an angle of an optical signal generated due to interference between one or more of N optical signals emitted by the N optical signal emitters.4. The optical phased array of wherein each of the M optical signal phase/delay elements is a ring resonator.5. The optical phased ...

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Номер записи: 83

06-03-2014 дата публикации

Wireless power receiver and transfer, wireless power transceiver system, and wireless power transceiver mobile device

Номер: US20140062214A1

Автор: Chongmin LEE, Chul Hun SEO

Принадлежит: FOUNDATION OF SOONGSIL UNIVERSITY INDUSTRY COOPERATION

A wireless power receiver includes a receiver resonator configured to be coupled to a source resonator to receive a power from the source resonator, the receiver resonator comprising: an inverted U-shaped dielectric layer whose distal ends are bent inward; an antenna patterned in the form of a loop in line with the shape of the dielectric layer; and a meta-structure arranged around the antenna on the dielectric layer, wherein the meta-structure is configured to reinforce at least one of the electric fields and magnetic fields that are formed in the receiver resonator.

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Номер записи: 84

06-03-2014 дата публикации

Time stretch enhanced recording scope

Номер: US20140067300A1

Автор: Ali Motafakker-Fard, Bahram Jalali, Shalabh Gupta

Принадлежит: UNIVERSITY OF CALIFORNIA

A time-stretched enhanced recording scope (TiSER) is described using time stretch analog-to-digital conversion in a real-time burst mode. A chirped optical signal is modulated in response to receiving segments of an input signal. The optical signal with its modulated input signal, is stretched through an optical medium and digitized to represent the waveform segment. TiSER provides ultra-fast real-time sampling within short segment bursts of the original input signal while providing an ability to detect non-repetitive events. Methods and apparatus are also described for providing real-time information about inter-symbol information (ISI), rapidly determining bit-error rates (BER), performing time-domain reflectometry (TDR), generating eye diagrams for serial data, facilitating digital correction of data, clock recovery, optical carrier phase recovery, and otherwise increasing the speed and/or accuracy of a diverse range of high-speed signal measurement and processing activities.

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Номер записи: 85

20-03-2014 дата публикации

FOCUSING ELECTROMAGNETIC RADIATION WITHIN A TURBID MEDIUM USING ULTRASONIC MODULATION

Номер: US20140081096A1

Автор: Baym Michael H., Hyde Roderick A., JR. Lowell L., Kare Jordin T., Wood

Принадлежит: ELWHA LLC

The present disclosure provides various systems and methods for focusing electromagnetic radiation (EMR) within a diffusion medium, such as a turbid medium. A diffusion medium is irradiated with EMR. The EMR may be modulated by an acoustical wave focused on a focus volume within the diffusion medium. The EMR may be modulated by a beat frequency or other function of multiple focused acoustical waves. The EMR may be modulated at a harmonic of a fundamental frequency of one or more acoustical waves. A filter may filter the emerging EMR to remove all but specifically modulated EMR scattered from the focus volume. The modulated EMR may be focused and/or used for various purposes, including imaging. In some embodiments, the modulated EMR may be reflected and/or amplified by a phase conjugating mirror. Furthermore, in some embodiments, acoustical phase conjugation may be used to focus an acoustical wave on a focus volume. 1. A method for spectroscopically encoding electromagnetic radiation along a scan line , comprising:{'sub': a', 'a+x', 'a+n, 'vibrating each of a plurality of focus volumes along a scan line within a diffusion medium at a unique acoustical frequency, f, f, . . . f, using a plurality of focused acoustical waves;'}{'sub': 'r', 'irradiating the diffusion medium with electromagnetic radiation at a radiation frequency, f; and'}{'sub': r', 'a', 'a+x', 'a+n, 'receiving diffused electromagnetic radiation scattered from the diffusion medium, including modulated electromagnetic radiation from each of the focus volumes at modulated frequencies, fshifted by a function of the acoustical frequencies, f, f, . . . f, respectively.'}2. The method of claim 1 , wherein each of the focus volumes is part of a continuum of focus volumes claim 1 , each of which are vibrated at the unique acoustical frequencies claim 1 , f claim 1 , f claim 1 , . . . f.3. The method of claim 1 , wherein the unique acoustical frequencies claim 1 , f claim 1 , f claim 1 , . . . f claim 1 , are ...

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Номер записи: 86

27-03-2014 дата публикации

Grayscale patterns from binary spatial light modulators

Номер: US20140085562A1

Автор: David M. Bloom, Matthew A. Leone

Принадлежит: Alces Technology Inc

Brightness-by-column grayscale and spatial Σ-Δ modulation grayscale allow grayscale patterns to be produced using a binary spatial light modulator as fast as the bright/dark switching speed.

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Номер записи: 87

10-04-2014 дата публикации

Optical waveguide device, optical interferometer and control method for optical waveguide device

Номер: US20140099053A1

Автор: Kenji Sato, Mineto Satoh

Принадлежит: NEC Corp

In order to independently perform control of a phase difference and a loss of light transmitting through an optical waveguide in a simple and easy configuration, an optical waveguide device includes an optical waveguide provided with two electrodes each supplied with a corresponding one of two signals; and a control unit for controlling the two signals so as to cause a phase variation and a loss variation which are caused in light transmitting through the optical waveguide by the two signals to each have a predetermined value.

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Номер записи: 88

10-04-2014 дата публикации

Coupled Plasmonic Waveguides and Associated Apparatuses and Methods

Номер: US20140099054A1

Автор: Bain James A., Black Eric J., Powell Stephen P., Schlesinger Tuviah E.

Принадлежит: CARNEGIE MELLON UNIVERSITY

An apparatus and corresponding method in which the apparatus includes a dielectric waveguide and a metallic waveguide. The dielectric waveguide has an effective mode index and a longitudinal dimension. The metallic waveguide has a longitudinal dimension and supports a surface plasmonic mode of propagation for a wavelength lambda. The metallic waveguide and the dielectric waveguide are adjacent to each other and overlap each other by a length along the longitudinal dimensions of both the dielectric waveguide and the metallic waveguide, wherein the length is greater than the wavelength lambda in the metallic waveguide. The metallic waveguide is coupled to the dielectric waveguide where the metallic waveguide and the dielectric waveguide overlap each other. 1. A method of fabricating a device for directing plasmonic energy to a spot on a target during operation of the device , the method comprising:providing a dielectric waveguide designed and configured to receive excitation energy that is subsequently coupled into the plasmonic energy during operation of the device; a longitudinal direction along which the plasmonic energy propagates during operation of the device; and', 'a cross-sectional shape transverse to the longitudinal direction; and', 'tuning the device so that, during operation of the device, the plasmonic energy is spacially located at a desired location on the cross-sectional shape., 'providing a metallic waveguide designed and configured in conjunction with the excitation energy to guide the plasmonic energy and to direct the plasmonic energy to the target so as to generate the spot during operation of the device, wherein the metallic waveguide has2. A method according to claim 1 , wherein the plasmonic energy contains a particular surface-plasmon mode and said tuning suppresses claim 1 , during operation of the device claim 1 , at least one surface-plasmon mode other than the particular surface-plasmon mode.3. A method according to claim 2 , wherein the ...

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Номер записи: 89

07-01-2016 дата публикации

LIQUID CRYSTAL OPTICAL DEVICE WITH ADVANCED ELECTRIC FIELD CONTROL CAPABILITY

Номер: US20160000557A1

Автор: ASATRYAN Karen, BAGRAMYAN Aram, Careau Simon, GALSTIAN Tigran, PRESNIAKOV Vladimir, TORK Amir, ZOHRABYAN Armen

Принадлежит: LENSVECTOR INC.

A liquid crystal optical device is provided, including a layered structure including at least two support substrates. An external hole patterned control electrode is provided on one of the substrates and has an aperture. An internal hole patterned control electrode is provided on one of the substrates within the aperture, the internal and outer control electrodes being separated by a gap, which forms part of the aperture. A weakly conductive material is provided on one of the substrates over the aperture. A planar transparent electrode is provided on another one of the substrates. An alignment surface is provided on the substrates over the electrodes. A layer of liquid crystal material is contained by the substrates and in contact with the alignment surface of the substrates. A floating transparent electrode is provided on a side of one of the substrates opposite the outer and the internal hole patterned electrode. 1. A liquid crystal gradient index optical device , the optical device comprising a first optical component having an aperture and an optical aberration near an external portion of the aperture , and a second optical component configured to correct the optical aberration , at least the second optical component comprising:at least two substrates;an internal tape hole patterned control electrode provided on one of said substrates within said aperture, said internal control electrode and said aperture being separated by a gap, said gap forming part of said aperture;a weakly conductive material provided in association with the internal hole patterned control electrode;a planar transparent electrode provided on another of said substrates; andan alignment surface provided on said substrates in contact with a layer of liquid crystal material between said substrates,wherein an electric field provided by the internal hole patterned control electrode and the planar transparent electrode allow for the liquid crystal material to correct said optical aberration.2. The ...

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Номер записи: 90

02-01-2020 дата публикации

PERIODONTAL POCKET EXAMINATION APPARATUS

Номер: US20200000568A1

Автор: SHINDO Mikio

Принадлежит:

An examination probe used in an apparatus for examining the depth of a periodontal pocket includes a light-emitting portion and a gripping portion. The light-emitting portion includes a crystal deflecting element, which deflects, in a specific direction, measuring light split off from low-interference light, and an f-θ lens for rendering parallel the measuring light that has been deflected. Measuring light that has been rendered parallel such as a measuring light beam is emitted from an opening of the light-emitting portion and irradiates a gum or tooth of a subject. An optical tomographic image of the gum or tooth is generated from interference signals obtained based on reflected light, allowing the depth of a periodontal pocket to be determined. The light-emitting portion protrudes further than the gripping portion does in the direction of emission of the measuring light such as the measuring light beam. 1. A periodontal pocket examination apparatus comprising:an optical divider for splitting low-interference light into measuring light and reference light;a crystal deflecting device on which the measuring light split off by said optical divider is incident for deflecting the incident measuring light in a specific direction in accordance with an applied voltage and for emitting the measuring light deflected;a parallelizing device for aligning into parallel light the measuring light emitted from said crystal deflecting device;a photodetector for detecting reflected light and outputting an interference signal, the reflected light being reflected measuring light which is reflected from a gum or tooth owing to irradiation of the gum or tooth with the measuring light aligned parallel by said parallelizing device and reflected reference light which is split off by said optical divider and reflected by a reference surface;periodontal pocket data generator for generating data regarding depth of a periodontal pocket based on the interference signal output from said ...

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Номер записи: 91

01-01-2015 дата публикации

Automatic Welding Filter With Tunable Spectral Transmission

Номер: US20150001378A1

Автор: Jarefors Kenneth, Magnusson Kristina M.

Принадлежит:

The present invention relates to an automatic welding filter that changes from a light transmission state to a dark transmission state in response to incident welding light and includes a colour-tunable filter whose spectral transmittance can be varied to optimise the visual appearance of a welding task. The colour-tunable filter comprises at least one low twist liquid crystal cell disposed between polarisation filters having substantially parallel polarisation directions. The user is able to adjust the colour of the automatic welding filter in the dark transmission state, independently of the shade, in response to a user selected colour signal which alters the birefringence properties of the low twist liquid crystal cell.

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Номер записи: 92

01-01-2015 дата публикации

NON-MOVING OPTICAL BEAM STEERING USING NON-PIXELATED LIQUID CRYSTAL OPTICAL PHASED ARRAYS

Номер: US20150002804A1

Автор: Khan Sajjad A.

Принадлежит:

A method for directing light beams includes generating a light beam along a light path. A voltage differential is created by generating a voltage in a first and second linear electrode contacts arranged such that the first and second linear electrical contacts alternate with each other. The light path is altered by passing the light beam through a liquid crystal device coupled to the first and second linear electrical contacts. 1. A device , comprising: a first substrate optically transmissive to light of the light path;', 'a second substrate substantially parallel to the first substrate;', {'b': 10', '000, 'a low impedance layer disposed between the first and second substrates, the low impedance layer having a sheet impedance of at most , Ohms per square;'}, {'b': '200', 'a high impedance layer disposed between the low impedance layer and the second substrate, the high impedance layer having a sheet impedance of at least Ohms per square and the high impedance layer comprising a plurality of electrode pairs, each electrode pair comprising first and second electrodes;'}, 'a liquid crystal layer disposed between the low impedance layer and the high impedance layer, the liquid crystal layer comprising a plurality of liquid crystal molecules oriented in a substantially similar orientation direction;', 'a mirror layer disposed between the high impedance layer and the second substrate; and', 'a voltage source configured to provide a first voltage to each of the first electrodes, a second voltage to each of the second electrodes, and a first reference voltage to the first low impedance layer., 'a first liquid crystal device in a light path, the first liquid crystal device comprising2. The device of claim 1 , further comprising a quarter-wave plate layer disposed between the high impedance layer and the mirror layer claim 1 , the quarter-wave plate layer having a slow axis oriented at approximately 45 degrees from the substantially similar orientation direction of the ...

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Номер записи: 93

05-01-2017 дата публикации

APPARATUS AND METHODS FOR AUGMENTED REALITY

Номер: US20170003507A1

Автор: Poulton Christopher V., Raval Manan, Sun Jie, Watts Michael R., Yaacobi Ami, Zhou Jerry

Принадлежит:

A display for augmented reality (AR) includes an array of optical phased arrays (OPAs) integrated into a transparent substrate. The array of OPAs emit light encoded with four dimensional (4D) light field including 2D spatial coordinates and 2D directional coordinates to create an image of a virtual object on a retina of a viewer. By adjusting the emission directions of light beam emitted by individual OPAs in the display, the depth perception can be adjusted accordingly. The array of OPAs can also be encoded with holographic information, including intensity and phase distribution, of a virtual object to create the image of the virtual object on the retina. The AR display can further incorporate liquid crystal (LC) into the OPAs for modulating the amplitudes and relative phases of light emitted by the OPAs. 1. a first display comprising: a first optical phased array (OPA) to emit a first beam at one of a first plurality of steering angles;', 'a second OPA to emit a second beam at one of a second plurality of steering angles; and}a controller, operably coupled to the first OPA and the second OPA, to steer the first beam through the first plurality of steering angles so as to change a first optical pattern created by the first beam and the second beam on a first retina of a viewer.2. The apparatus of claim 1 , wherein the apparatus comprises eyewear.3. The apparatus of claim 1 , wherein the first display is substantially transparent so as to allow the viewer to see through the first display.4. The apparatus of claim 1 , wherein the first plurality of steering angles comprises at least three different steering angles.5. The apparatus of claim 1 , wherein a difference between a first steering angle and a second steering angle in the first plurality of steering angles is about 1 degree to about 20 degrees.6. The apparatus of claim 1 , wherein a difference between a first steering angle and a second steering angle in the first plurality of steering angles is substantially ...

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Номер записи: 94

05-01-2017 дата публикации

INTEGRATED OPTICAL MODULATOR OF THE MACH-ZEHNDER TYPE

Номер: US20170003571A1

Автор: Carpentier Jean-Francois, LeMaitre Patrick, Pache Denis

Принадлежит:

An integrated modulator of the Mach-Zehnder type includes two optical arms containing waveguides with PN junctions and biasing circuits for reverse biasing the PN junctions in response to a control signal. The two optical arms are situated within a semiconductor substrate of a first element that also has an interconnection region. The biasing circuits are situated, in part, within a substrate of a second element that also contains an interconnection region. The first and second elements are rigidly attached to each other via their respective interconnection regions. 1. An integrated modulator of the Mach-Zehnder type , comprising:two optical arms containing waveguides with PN junctions; anda biasing circuit configured to bias the PN junctions in response to a control signal;wherein the two optical arms are situated within a semiconductor substrate of a first element having an interconnection region covering the semiconductor substrate;wherein the biasing circuit is situated, in part, within a substrate of a second element also having an interconnection region; andcircuit connections situated within the interconnection regions of the two elements;wherein the two elements are rigidly attached together through their respective interconnection regions.2. The modulator according to claim 1 , wherein the circuit connections comprise: the interconnection regions including metal bonding pads rigidly attached together in such a manner as to form electrically-conducting pillars.3. The modulator according to claim 2 , wherein the biasing circuit comprises control circuit components situated within the substrate of the second element.4. The modulator according to claim 3 , wherein the circuit connections comprise first electrically-conducting links situated within the interconnection region of the first element and coupled to the waveguides with PN junctions claim 3 , pillars coupled to the first electrically-conducting links and second electrically-conducting links situated ...

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Номер записи: 95

07-01-2016 дата публикации

WEARABLE DATA DISPLAY

Номер: US20160004090A1

Автор: Popovich Milan Momcilo, Waldern Jonathan David

Принадлежит:

A transparent wearable data display having a source of collimated light, a deflector for deflecting the collimated light into a scanned beam, and a first of switchable grating elements sandwiched between first and second parallel transparent substrates, which together functioning as a first light guide. A first coupling is provided for directing the scanned beam into a first total internal reflection (TIR) light path of the first light guide along the first array column. The grating elements having diffracting and non-diffracting states, in their diffracting state deflecting light out of said light guide. The grating elements are switchable into their diffracting states one group of elements at a time. 1. A transparent wearable data display comprising:a source of light;a means for forming said light into a scanned beam;a first multiplicity of switchable grating elements sandwiched between first and second parallel transparent substrates, said substrates together functioning as a first light guide;a first coupling means for directing said scanned beam into a first total internal reflection light path between the outer surfaces of said first light guide,each said grating element having diffracting and non-diffracting states,each said grating element in its diffracting state deflecting light out of said light guide,wherein said grating elements are switched into their diffracting states one group of elements at a time.2. The apparatus of wherein transparent electrodes are applied to said first and second substrates claim 1 , wherein said switchable grating elements each have a diffracting state when no electric field is applied across said electrodes and a non-diffracting state when a field is applied across said electrodes.3. The apparatus of further comprising a collimator.4. The apparatus of wherein said multiplicity of switchable grating elements is a two dimensional array and said group of elements comprises at least one column of grating elements.5. The apparatus ...

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Номер записи: 96

07-01-2016 дата публикации

SILICON OPTICAL MODULATOR USING ASYMMETRIC SHALLOW WAVEGUIDE AND THE METHOD TO MAKE THE SAME

Номер: US20160004104A1

Автор: Feng Ningning, Sun Xiaochen

Принадлежит: LAXENSE INC.

The invention provides methods of forming an optical device, in particular, a silicon optical modulator using shallow rib waveguide structure. According to the embodiments of the present invention, the silicon optical waveguide modulator includes a shallow rib waveguide with asymmetric shoulder heights disposed on a surface of a substrate; one side terminated by the waveguide edge and the other side terminated by a second laterally oriented PN junction, a first vertically oriented PN junction is positioned inside the light propagation region of the waveguide; and higher doping regions with the same type of doping type of the adjoining regions are positioned on the asymmetric shoulders outside the light propagation regions in electrical contact with metal contacts. 1. An optical device comprising:a substrate;an optical waveguide structure formed of an asymmetric rib structure, which includes a center region, and a higher slab region and a lower slab region at opposite sides of the rib structure, the higher slab region having a higher height than the lower slab region;a vertically-oriented PN diode formed inside the asymmetric rib structure of the optical waveguide structure, comprising a first doping layer and a second doping layer disposed on top of the first doping layer with opposite doping type, the first and second doping layers adjoining to form a vertical PN junction oriented substantially parallel to a top surface of the substrate, wherein the vertically-oriented PN junction is terminated on one side by an edge of the optical waveguide structure;a first higher doping region located in the lower slab region outside a light propagation region of the optical waveguide structure, the first higher doping region extending vertically to a surface of the substrate, the first higher doping region having a same doping type as and a higher doping concentration than the first doping layer;a second higher doping region located in the higher slab region outside the light ...

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Номер записи: 97

07-01-2016 дата публикации

Liquid crystal lens and three-dimensional display device

Номер: US20160004128A1

Автор: Kun Wu

Принадлежит: BOE Technology Group Co Ltd

A liquid crystal (LCD) lens and a three-dimensional (3D) display device, which can achieve the equality of signal delay and reduce or eliminate the Moire phenomenon. The LC lens includes: a first substrate and a second substrate arranged opposite to each other, a liquid crystal layer disposed between the first substrate and the second substrate, and a plurality of parallel strip electrodes disposed on one side, close to the liquid crystal layer, of at least one of the first substrate and the second substrate. At least one strip electrode includes a plurality of strip sub-electrodes in sequential end-to-end connection. A specific included angle (α) is formed between the extension direction of each strip sub-electrode and the extension direction of the strip electrode.

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Номер записи: 98

04-01-2018 дата публикации

Electro-optical modulator

Номер: US20180003893A1

Автор: Heinz-Gunter Bach

Принадлежит: Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV

An electro-optical modulator is provided. The modulator comprises a first and a second optical waveguide, at least one first capacitance, via which a voltage can be applied to a light-guiding region of the first optical waveguide, at least one second capacitance, via which a voltage can be applied to a light-guiding region of the second optical waveguide, an electrically conductive region, via which the first and second capacitances are electrically connected to one another, and a feed line to the electrically conductive region, via which feed line a DC voltage can be applied to the electrically conductive region, wherein the feed line is constituted such that it represents an electrical resistance connected in parallel with the second capacitance, and a compensation resistance connected in parallel with the first capacitance and serving for reducing transients in a voltage profile on the first and second capacitances during the operation of the modulator.

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Номер записи: 99

02-01-2020 дата публикации

OPTICAL SCANNING DEVICE, PHOTORECEIVER DEVICE, AND PHOTODETECTION SYSTEM

Номер: US20200003873A1

Автор: HASHIYA AKIRA, HIRASAWA TAKU, INADA YASUHISA, NAGAO Nobuaki, YAMAOKA YOSHIKAZU

Принадлежит:

An optical scanning device includes: first and second mirrors; an optical waveguide layer disposed between the first and second mirrors; a pair of electrodes sandwiching the optical waveguide layer; and a driving circuit that applies a voltage to the pair of electrodes. The first mirror has a higher light transmittance than the second mirror and emits part of light propagating through the optical waveguide layer to the outside. The optical waveguide layer contains a liquid crystal material or an electrooptical material. The alignment direction of the liquid crystal material or the direction of a polarization axis of the electrooptical material is parallel or perpendicular to the direction in which the optical waveguide layer extends. The driving circuit applies the voltage to the pair of electrodes to change the refractive index of the liquid crystal material or the electrooptical material to thereby change the light emission direction. 1. An optical scanning device comprising:a first mirror including a multilayer reflective film;a second mirror including a multilayer reflective film facing the multilayer reflective film of the first mirror;an optical waveguide layer that is disposed between the first mirror and the second mirror and that propagates inputted light as propagating light;a pair of electrodes sandwiching the optical waveguide layer; anda driving circuit that applies a voltage to the pair of electrodes,wherein the first mirror, the second mirror, and the optical waveguide layer have respective structures extending in a same direction,wherein the first mirror has a higher light transmittance than the second mirror and allows part of the propagating light propagating through the optical waveguide layer to pass through and be emitted to outside of the optical waveguide layer as emission light,wherein the optical waveguide layer contains a liquid crystal material or an electrooptical material,wherein, when the voltage is not applied to the pair of electrodes ...

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Номер записи: 100