Beam Deflector Or Splitter Patents (Class 359/489.08)
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Patent number: 11920922Abstract: A system for detecting an alignment of a relay lens assembly and a combiner of a head-up display is disclosed. The system includes an illuminated reticle spatially coupled to the relay lens assembly, an optical sensor spatially coupled to the combiner, and a control module configured to receive an input from the optical sensor, determine a position of the combiner relative to the relay lens assembly based on the received input; and generate an output based on a determined position of the combiner relative to the relay lens assembly. In another system, the illuminated reticle is spatially coupled to the combiner, and the optical sensor is spatially coupled to the relay lens assembly. The system may also participate in a feedback loop with the head-up display to reduce jitter in the head-up display.Type: GrantFiled: April 2, 2021Date of Patent: March 5, 2024Assignee: Rockwell Collins, Inc.Inventors: Eric P. Stratton, Ian M. Meyer
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Patent number: 11906780Abstract: An asymmetric adiabatic polarization beam splitter integrated with a waveband filtering splitter unit and a polarization filtering splitter unit is capable of being packaged to form an integrated optical waveguide filtering chip. The waveband filtering splitter unit utilizes an adiabatic optical waveguide structure and stimulated Raman adiabatic passage on an optical waveguide to split the energy of light sources of different bands to different spaces when the light energy is performed with an adiabatic process. The polarization filtering splitter unit utilizes the two orthogonal polarization modes of an optical waveguide with birefringence to achieve a polarization-dependent mode splitting effect based on an adiabatic theory. The asymmetric adiabatic polarization beam splitter realizes the characteristics of integration and high process tolerance, and improves the mass production feasibility.Type: GrantFiled: October 26, 2021Date of Patent: February 20, 2024Assignee: National Central UniversityInventors: Hung-Pin Chung, Kuang-Hsu Huang, Tsung-Yeh Ho, I-Ting Chung, Yen-Hung Chen
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Patent number: 11879853Abstract: An inspection system may include an illumination source to generate an illumination beam, illumination optics to direct the illumination beam to a sample at an off-axis angle along an illumination direction, and collection optics to collect scattered light from the sample in a dark-field mode, where the scattered light from the sample includes surface haze associated with light scattered from a surface of the sample, and where at least a at least a portion of the surface haze has elliptical polarizations. The system may further include pupil-plane optics to convert the polarizations of the surface haze across the pupil to linear polarization that is aligned parallel to a selected haze orientation direction. The system may include a linear polarizer to reject the surface haze aligned parallel to this haze orientation direction and a detector to generate a dark-field image of the sample based on light passed by the linear polarizer.Type: GrantFiled: February 16, 2022Date of Patent: January 23, 2024Assignee: KLA CorporationInventors: Xuefeng Liu, Jenn-Kuen Leong, Yung-Ho Alex Chuang, John Fielden
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Patent number: 11852819Abstract: An electronic device may include a display module that produces foveated images having high and low resolution regions. The module may include a reflective display panel that produces first reflected light during first time periods and second reflected light during second time periods. The first reflected light may reflect off of a beam splitter to form the low resolution region of the foveated image. The second reflected light may be transmitted by the beam splitter, de-magnified by a lens, and redirected by an optical steering element to produce the high resolution region at a desired, adjustable, location in the foveated image. The reflective display panel may be replaced by sets of emissive display panels that concurrently display the high and low resolution regions in the foveated image. The sets of emissive display panels may be replaced by front-lit reflective display panels.Type: GrantFiled: September 20, 2021Date of Patent: December 26, 2023Inventors: Graham B. Myhre, Guolin Peng, Hyungryul Choi, Scott M. DeLapp, Vikrant Bhakta
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Patent number: 11802757Abstract: Present disclosure relates to a heterodyne grating interferometric method and system for two-degree-of-freedom with high tolerance. The system comprises a separately modulated heterodyne laser (1), an optical prism (23) and a photoelectric detection and signal processing unit (4). The separately modulated heterodyne laser (1) simultaneously outputs two laser beams at different frequencies, which are incident in parallel to a first beamsplitting surface so as to be split, and then a part thereof is incident to a retro-reflector (233) to produce reference beams (53a, 53b), which are incident to a third beamsplitting surface, and the other part traverses a double-diffraction structure formed by a measured grating (3) and retro-reflectors (234a, 234b) to obtain two measured beams (59a, 59b), which are incident to a second beamsplitting surface and then are divided into two parts.Type: GrantFiled: April 18, 2019Date of Patent: October 31, 2023Assignee: Harbin Institute of TechnologyInventors: Pengcheng Hu, Di Chang, Jiubin Tan
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Patent number: 11789272Abstract: The disclosure discloses a near-to-eye display device, including: a first display screen, a first imaging lens, a second display screen, a second imaging lens and a waveguide. The first display screen provides a first image and the first image enters the waveguide through the first imaging lens. The second display screen provides a second image, the second image enters the waveguide through the second imaging lens. Imaging light rays from the first imaging lens and the second imaging lens can emit towards a light-emitting surface of the waveguide via a light taking part, and enter the human eyes.Type: GrantFiled: August 18, 2021Date of Patent: October 17, 2023Assignees: Beijing BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.Inventors: Na Han, Chenru Wang, Ruijun Dong, Yulong Wu, Ke Li, Jiarong Bai, Hao Zhang
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Patent number: 11789770Abstract: A system for creating surrogate models is provided. The system includes a user computing device including a user interface, a database, and a processor. The processor is configured to receive, from the user computing device, a workflow request, determine at least one application in the database required to complete the workflow request, retrieve, from the database, the at least one application and meta-data associated with the at least one application, and determine that a user has proper tenancies to use the at least one application. The processor is further configured to execute, using the at least one application on an external computing device, a workflow associated with the workflow request based at least in part on the meta-data, generate, based on execution of the workflow request, new meta-data associated with the at least one application, and transmit the new meta-data to the database.Type: GrantFiled: May 19, 2020Date of Patent: October 17, 2023Assignee: General Electric CompanyInventors: James Albert Tallman, Eric James Tucker, Vincent Michael Russo, Andrew Louis Gallo, Jr., Richard Brownell Arthur, Jeffrey Michael Iannotti, Peter Matthew Schmid, Adam Franklin Stevenson, David Charles Harry Ward, Douglas Evan King
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Patent number: 11768329Abstract: A device includes an integrated structure of an input fiber, a first output fiber, an input splitting/combining device, a first output splitting/combining device, an input rotation device, a first output rotation device, a first lens, an isolator core, a second lens, a second output rotation device, a second output splitting/combining device, and a second output fiber. With the integrated structure, the device integrates functions of an optical isolator and an optical splitter. As an optical splitter, input of an optical signal into the input fiber are distributed to the two output fibers for output. As an optical splitter, the device can isolate light in opposite directions and can reduce damage to a light source at the input. In a system, the device can replace two conventional optical isolators and optical splitters and effectively reduce space, simplify the assembly process, and facilitate miniaturization and integration for systems.Type: GrantFiled: January 14, 2021Date of Patent: September 26, 2023Assignee: II-VI DELAWARE, INCInventors: Yuping Wu, Peng Xiao, Danping We
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Patent number: 11764873Abstract: Disclosed is an electronic device (1) for converting a wireless signal (2) in the mm-wave or sub-THz range into at least one modulated optical signal (16). The electronic device (1) comprises an antenna element (11) for converting the wireless signal (2) into a guided electrical signal (12), wherein the antenna element (11) is arranged on a printed circuit board (10b?) or on a first integrated chip (10?). The electronic device (1) comprises an electrical signal converter (13) for converting the at least one guided electrical signal (12) into a conditioned electrical signal (14), wherein the electrical signal converter (13) is arranged on a second integrated chip (10?).Type: GrantFiled: December 17, 2019Date of Patent: September 19, 2023Assignee: ETH ZURICHInventors: Maurizio Burla, Juerg Leuthold
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Patent number: 11754768Abstract: An augmented reality display device, which is configured to provide an augmented reality image to an eye of a user, includes a display module and multiple mirror sets. The display module includes a projector and multiple switching elements. The projector provides an original image beam. The switching elements are deposed sequentially on a path of the original image beam. Each of the switching elements reflects or transmits the original image beam. Reflection paths of each ray of the original image beam on the switching elements intersect at one point to generate multiple image beams. The mirror sets are disposed on paths of the image beams. The image beams are reflected at different angles on the mirror sets, and the mirror sets reflect the image beams to the eye.Type: GrantFiled: August 29, 2022Date of Patent: September 12, 2023Assignee: Acer IncorporatedInventors: Tsung-Wei Tu, Yi-Jung Chiu, Shih-Ting Huang, Yen-Hsien Li
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Patent number: 11754841Abstract: An eyepiece waveguide for an augmented reality display system. The eyepiece waveguide can include an input coupling grating (ICG) region. The ICG region can couple an input beam into the substrate of the eyepiece waveguide as a guided beam. A first combined pupil expander-extractor (CPE) grating region can be formed on or in a surface of the substrate. The first CPE grating region can receive the guided beam, create a first plurality of diffracted beams at a plurality of distributed locations, and out-couple a first plurality of output beams. The eyepiece waveguide can also include a second CPE grating region formed on or in the opposite surface of the substrate. The second CPE grating region can receive the guided beam, create a second plurality of diffracted beams at a plurality of distributed locations, and out-couple a second plurality of output beams.Type: GrantFiled: January 14, 2022Date of Patent: September 12, 2023Assignee: Magic Leap, Inc.Inventors: Samarth Bhargava, Victor Kai Liu, Kevin Messer
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Patent number: 11700062Abstract: A simple, compact and low-cost passive optical transceiver device with four terminals may be used in an optical transmission system with polarization-diversity coherent detection scheme. The transceiver is composed of a first polarization splitter/combiner, a non-reciprocal polarization rotator and a second polarization splitter/combiner. The device simultaneously operates as a transmitter and a receiver with optical signals propagating along opposite directions wherein non-reciprocal polarization rotation leads to distinct effects. The received optical signal is thus split into two orthogonal polarization components directed towards two separate ports.Type: GrantFiled: December 12, 2021Date of Patent: July 11, 2023Assignee: Lightel Technologies, Inc.Inventors: Shyh-Chung Lin, Hongyu Hu
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Patent number: 11588290Abstract: A system includes a light transmitter configured to emit a first light beam. The first light beam includes a primary portion and an amplified spontaneous emission (ASE) portion. The system also includes a host material configured to receive the first light beam and emit a second light. The host material is configured to generate the second light by depopulation of chromophores of one or more dopants in the host material caused by energy of the primary portion of the first light beam. The second light is continuous wave and speckle free.Type: GrantFiled: April 8, 2020Date of Patent: February 21, 2023Assignee: Raytheon CompanyInventor: Holger M. Jaenisch
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Patent number: 11543571Abstract: A transmission filter apparatus is provided that includes: (i) a substrate to serve as a foundation for the apparatus; (ii) a layer containing resonant dielectric cavities separated by conductive regions. The dimensions and design of the dielectric cavities, thickness of the layer, and substrate, dielectric and conductive materials are chosen to achieve resonant transmission of selected wavelengths. In a particular one or more embodiments, the layer is one dimensional, i.e. you have dielectric cavities along one axis in the plane that are comparatively infinity long in the parallel plane. In a particular one or more embodiments, the layer is two dimensional, i.e. you have dielectric cavities along both axis in the plane. The dimensions in each plane may or may not be equal. In a specific one or more embodiments, the dielectric cavities are terminated on the top and/or bottom by thin metal films with small apertures or tapers.Type: GrantFiled: June 16, 2020Date of Patent: January 3, 2023Assignee: United States of America as represented by the Secretary of the Air ForceInventors: Justin W. Cleary, Evan M. Smith, Ricky D. Gibson, Jr., Shivashankar R. Vangala, Joshua Hendrickson, Ivan Avrutsky
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Patent number: 11526014Abstract: A near eye display apparatus includes: a lens having a viewing area, the lens comprising a waveguide having a waveguide input and a waveguide output optically coupled to the viewing area; an optical projector having a projector output, the optical projector comprising an illumination source optically coupled to the optical prism element and configured to provide illumination light into the optical prism element at a particular direction, a spatial light modulator optically coupled to the optical prism element and configured to receive the illumination light from the optical prism element and to reflect patterned light, the optical prism element configured to provide the patterned light to the projector output at the particular direction; and an optical folding element optically coupled between the projector output and the waveguide input, the optical folding element configured to fold an optical path of the patterned light in at least two different directions.Type: GrantFiled: July 15, 2020Date of Patent: December 13, 2022Assignee: TEXAS INSTRUMENTS INCORPORATEDInventor: Zhongyan Sheng
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Patent number: 11500187Abstract: Disclosed are systems, methods, and structures for broadband phase shifting for quantitative phase microscopy (QPI) that advantageously allows for a greater useable wavelength range for QPI wherein either/both illumination paths and/or scatter paths: 1) propagate through a reflective objective; 2) become quantifiably phase-shifted utilizing broadband mirror surfaces; 3) attenuate the relatively bright illumination paths to maximize contrast; and 4) recombine at a sensor plane for quantitative analysis.Type: GrantFiled: June 15, 2020Date of Patent: November 15, 2022Assignee: Massachussets Institute of TechnologyInventor: William Hubbard
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Patent number: 11493694Abstract: An electro-optic combiner includes a polarization splitter and rotator (PSR) that directs a portion of incoming light having a first polarization through a first optical waveguide (OW). The PSR rotates a portion of the incoming light having a second polarization to the first polarization to provide polarization-rotated light. The PSR directs the polarization-rotated light through a second OW. Each of the first and second OW's has a respective combiner section. The first and second OW combiner sections extend parallel to each other and have opposite light propagation directions. A plurality of ring resonators is disposed between the combiner sections of the first and second OW's and within an evanescent optically coupling distance of both the first and second OW's. Each of ring resonators operates at a respective resonant wavelength to optically couple light from the combiner section of the first OW into the combiner section of the second OW.Type: GrantFiled: June 21, 2021Date of Patent: November 8, 2022Assignee: Ayar Labs, Inc.Inventors: Pavan Bhargava, Derek Van Orden, Mark Wade, John Fini, Chen Sun, Milos Popovic, Anatol Khilo
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Patent number: 11467344Abstract: The present disclosure provides an optical circulator. The optical circulator includes a first integrated module, a second integrated module and a third integrated module which are sequentially connected from front to rear. The first integrated module includes a mating shell, an optical fiber ferrule received in the mating shell and a first birefringence crystal attached to a rear surface of the optical fiber ferrule; the second integrated module comprises a first tube fixed behind the mating shell, a magnetic ring received in the first tube, a Wollaston prism fixed in the magnetic ring, two Faraday rotators respectively provided to both sides of the Wollaston prism, and two collimating lenses respectively provided to both sides of the two Faraday rotators. The third integrated module includes a second tube fixed behind the first tube, a dual fiber pigtail received in the second tube, and a second birefringence crystal attached to a front surface of the dual fiber pigtail.Type: GrantFiled: June 23, 2020Date of Patent: October 11, 2022Assignee: Molex, LLCInventors: Hai-Feng Lv, Zhong-Sheng Wang
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Patent number: 11460614Abstract: The present invention provides a quantum dot composite brightness enhancement film and a method for manufacturing same, relating to the field of optical thin films. The quantum dot composite brightness enhancement film includes a quantum dot film layer formed by a back coating layer, a substrate layer, a first barrier layer, a quantum dot layer, and a second barrier layer which are sequentially attached, a composite brightness enhancement film layer formed by a diffusion layer, a core layer, and a prism layer which are sequentially attached, and an Optically Clear Adhesive (OCA) layer connecting the second barrier layer and the diffusion layer.Type: GrantFiled: June 16, 2020Date of Patent: October 4, 2022Assignee: NANJING BREADY ELECTRONICS CO., LTD.Inventors: Yong Liu, Binbin Xie
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Patent number: 11460699Abstract: An augmented reality device, an augmented reality system and an information prompt method thereof. The augmented reality device includes a micro display, an augmented reality element and an optical waveguide element. The micro display is configured to emit light carrying display content, the light includes a first light portion in a first polarization state and a second light portion in a second polarization state; the augmented reality element is configured to allow the first portion to convert from the first polarization state into the second polarization state, to allow the second light portion to convert from the second polarization state into the first polarization state, and to couple the first light portion in the second polarization state and the second light portion in the first polarization state to the optical waveguide element; the first polarization state is perpendicular to the second polarization state.Type: GrantFiled: September 25, 2018Date of Patent: October 4, 2022Assignee: Beijing BOE Technology Development Co., Ltd.Inventor: Tao Hong
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Patent number: 11415794Abstract: A beam scanner for a near-eye display includes a beam-folded pupil relay configured for receiving a light beam reflected from a tiltable reflector and relaying the light beam to an exit pupil while preserving the beam angle of the reflected beam. The beam-folding pupil relay includes a beamsplitter, e.g. a polarization beam splitter configured to redirect the beam to a curved reflector, which sends the beam towards the exit pupil. Polarization of the light beam reflected from the curved reflector may be changed to an orthogonal polarization by a waveplate disposed in an optical path of the light beam between the polarization beam splitter and the curved reflector, enabling the reflected light beam to propagate through the polarization beam splitter towards the exit pupil. A pupil-replicating waveguide may be disposed proximate the exit pupil. A 2D tiltable reflector or a pair of 1D tiltable reflectors may be used.Type: GrantFiled: October 3, 2019Date of Patent: August 16, 2022Assignee: META PLATFORMS TECHNOLOGIES, LLCInventors: Weichuan Gao, Brian Wheelwright, Babak Amirsolaimani
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Patent number: 11372256Abstract: Provided is an optical element including: a main body which is formed of a medium capable of transmitting first light and second light having a wavelength longer than that of the first light, in which the main body includes an incident region into which the first light and the second light are incident, in which a gap which is inclined with respect to the incident region and in which a medium having a refractive index with respect to the first light and the second light lower than that of the main body is disposed is provided inside the main body, and in which a gap width from an interface bordering the main body and the gap is larger than a penetration length of an evanescent wave of the first light at the interface and is smaller than a penetration length of an evanescent wave of the second light at the interface.Type: GrantFiled: February 4, 2020Date of Patent: June 28, 2022Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Atsushi Nakanishi, Hironori Takahashi
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Patent number: 11366271Abstract: An optical communication module separating the input and output of light signals by birefringence includes first and second planar optical waveguides with a birefringent crystal connected to both. An optical fiber is adjacent to the second planar optical waveguide. An output beam from a transmitter passes through the first planar optical waveguide, the birefringent crystal, and the second planar optical waveguide in sequence, and enters into the optical fiber. An incoming beam from the optical fiber passes through the second planar optical waveguide, the birefringent crystal, and the first planar optical waveguide in sequence, and then falls onto a receiver.Type: GrantFiled: December 9, 2020Date of Patent: June 21, 2022Assignee: SHUNYUN TECHNOLOGY (ZHONG SHAN) LIMITEDInventor: Chun-Feng Li
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Patent number: 11320664Abstract: An apparatus includes a beam combiner structured as a prism. The beam combiner includes a first side configured to transmit a first beam generated from a first beam generator into the prism. The beam combiner also includes a second side configured to internally reflect the first beam and transmit a second beam generated from a second beam generator into the prism. The beam combiner further includes a third side configured to transmit the first beam and the second beam as a combined beam to a beam receiver.Type: GrantFiled: May 12, 2020Date of Patent: May 3, 2022Assignee: Raytheon CompanyInventor: Ken A. Fetterhoff
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Patent number: 11226491Abstract: An integrated imaging display system is provided. The system includes: a display device, and a polarization converting element, an optical path folding element, and a micro-lens array provided on a light emitting side of the display device. The polarization converting element is configured to convert light emitted from the display device into first linearly polarized light in a first polarization state and second linearly polarized light in a second polarization state; and the micro-lens array is configured to form a first three-dimensional display image in a first depth-of-field range based on the first linearly polarized light and form a second three-dimensional display image in a second depth-of-field range based on the second linearly polarized light. Two depth-of-field ranges in the imaging space of the system may be formed, which enlarges the depth-of-field range of the imaging space.Type: GrantFiled: March 21, 2019Date of Patent: January 18, 2022Assignee: BOE Technology Group Co., Ltd.Inventor: Tao Hong
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Patent number: 10935399Abstract: An apparatus for sensing a value of a property includes: an optical sensor having a single mode optical fiber responsive to the property; an optical interrogator having a tunable laser to transmit polarized light to the optical sensor, a photo-detector to receive sensor light, and a controller configured to process the received light and output the value of the property; and a passive random depolarizer disposed between the tunable laser and the single mode optical fiber and having (i) a first polarization maintaining (PM) optical fiber of length L1 having a first fast optical axis and a first slow optical axis and (ii) a second PM optical fiber of length L2 having a second fast optical axis and a second slow optical axis rotationally spliced to the first PM optical fiber in which the second fast and slow optical axes are offset from the first fast and slow optical axes.Type: GrantFiled: October 23, 2019Date of Patent: March 2, 2021Assignee: BAKER HUGHES, A GE COMPANY, LLCInventor: Dan Raymond Provenzano
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Patent number: 10444328Abstract: A high-power laser (HPL) system and method for targeting an object and imaging/tracking the object with an integral track illuminator. The system includes a HPL optically coupled to an aperture sharing element (ASE) and configured to project high-power light at the object, and to switch off for prescribed time intervals to illuminate and track the object. At least one camera is optically coupled to and disposed with respect to the ASE to track the illuminated object over a shared optical path with the HPL when the HPL is switched off for a prescribed time interval.Type: GrantFiled: July 24, 2018Date of Patent: October 15, 2019Assignee: United States of America as Represented by the Secretary of the Air ForceInventor: Patrick D. Saunders
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Patent number: 10365777Abstract: A polarizer and a display device, which relates to a display technology is provided. The polarizer is divided into a plurality of pattern regions arranged in a two-dimensional direction. The polarizer includes a linear polarization pattern and a touch sensing electrode disposed in the pattern region. The touch sensing electrodes in the different pattern regions are not connected. Polarization pattern and touch sensing electrode are set in the same layer.Type: GrantFiled: July 21, 2017Date of Patent: July 30, 2019Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Rui Xu, Xue Dong, Jing Lv, Haisheng Wang, Chun-Wei Wu, Yingming Liu
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Publication number: 20150146295Abstract: A laser output apparatus is disclosed. The laser output apparatus includes a laser source providing a first laser light; a first attenuation element attenuating the first laser light to be a second laser light having a polarization direction and an energy; a polarization changing element changing the polarization direction; and a second attenuation element decreasing the energy.Type: ApplicationFiled: January 27, 2014Publication date: May 28, 2015Applicant: U&U Engineering Inc.Inventors: Wen-Chih Weng, Ming Chen, Hsiao Yen Chuang
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Patent number: 9041897Abstract: An optical switch for performing high extinction ratio switching of an optical signal includes a beam polarizing element and one or more optical elements. The optical elements are configured to direct an optical signal along a first or second optical path based on the polarization state of the optical signal as it passes through the optical elements. The optical switch performs high extinction ratio switching of the optical signal by preventing unwanted optical energy from entering an output port by using an absorptive or reflective optical element or by directing the unwanted optical energy along a different optical path.Type: GrantFiled: November 29, 2013Date of Patent: May 26, 2015Assignee: II-VI IncorporatedInventors: Haijun Yuan, Xuehua Wu, Christopher Lin, Giovanni Barbarossa
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Patent number: 8937768Abstract: An optical component has a lens including a further optical component therein. The further optical component acts upon light propagating within a portion of the lens but not on light propagating within a second other portion of the lens. A simple configuration involves a lens having a slot for having the optical component inserted therein. Optical components including the lens with further optical component include beam splitters and beam combiners.Type: GrantFiled: May 4, 2011Date of Patent: January 20, 2015Assignee: Viscore Technologies Inc.Inventors: Wenlu Wang, Kinwai Leong, Yunqu Liu
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Publication number: 20150015952Abstract: A high brightness, high power laser output is produced using a technique of splitting the outputs of multiple laser diode sources into two polarization states, wavelength combining the first polarization state from the multiple laser diodes, separately wavelength combining the second polarization state from the multiple laser diodes, and recombining the two polarized wavelength combined beams using a polarization combiner.Type: ApplicationFiled: July 11, 2013Publication date: January 15, 2015Inventor: Edmund L. Wolak
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Publication number: 20140376083Abstract: A polarization reducing apparatus includes a separating unit configured to separate input light into components having polarization directions orthogonal to each other; a winding waveguide of silicon formed on a silicon substrate in a winding manner, the winding waveguide transmitting a first component among the components separated by the separating unit; an optical path configured to have a shorter optical path length than the winding waveguide, the optical path transmitting a second component among the components separated by the separating unit; a combining unit configured to combine the first component and the second component; and an output unit configured to output light consisting of the first component and the second component combined by the combining unit.Type: ApplicationFiled: September 8, 2014Publication date: December 25, 2014Inventor: Miki ONAKA
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Patent number: 8867133Abstract: The present disclosure relates to a polarization converting device and a method for manufacturing the same, wherein the polarization converting device includes a polarization separation unit aligned with a plurality of unit blocks including an optical separator transmitting a first polarization between an upper surface and a lower surface and reflecting a second polarization, and a phase retarder aligned in correspondence to an upper surface of each unit block of the polarization separation unit where a first region and a second region are alternately formed, wherein any one of the first and second regions of the phase retarder converts the polarized light while the other region emits the polarized light as it is.Type: GrantFiled: July 6, 2010Date of Patent: October 21, 2014Assignee: LG Innotek Co., Ltd.Inventors: Eunsung Seo, Seungman Jeong, Hyunho Choi
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Patent number: 8861082Abstract: An apparatus for providing a light beam has a solid-state laser to emit a polarized input laser light beam that has a first aspect ratio of etendue R1. First and second cylindrical lenses collimate the light along orthogonal directions. An edge of a bisecting reflective surface splits the laser light beam into a first portion directed along a first beam path and a second portion along a second beam path, wherein the first and second beam paths each contain emitted light from the solid-state laser. One or more folding reflective surfaces are disposed along the first or second or both beam paths. A polarization rotator rotates polarization of the light along the second beam path. A polarization combiner combines light from the first and second beam paths to form an output beam, wherein the output beam has a second aspect ratio of etendue R2 not equal to R1.Type: GrantFiled: February 21, 2012Date of Patent: October 14, 2014Assignee: Corning IncorporatedInventor: Joshua Monroe Cobb
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Patent number: 8837870Abstract: A fiber laser device includes a laser source that can emit a source laser beam, a birefringent beam separator configured to receive the source laser beam and to split the source laser beam into an o ray and an e ray which have mutually orthogonal polarizations, and a polarization maintaining fiber comprising a fiber core characterized by a core diameter, wherein after the o ray and the e ray exit birefringent beam separator, the o ray and the e ray are separated by a distance that is larger than the fiber core of the polarization maintaining fiber. The polarization maintaining fiber is positioned to couple one of the o ray and the e ray into the fiber core. The one of the o ray and the e ray transmits through the polarization maintaining fiber to form an output laser beam.Type: GrantFiled: April 29, 2013Date of Patent: September 16, 2014Assignee: Photop Technologies, Inc.Inventors: Zhenyu Wang, Shaofeng Zhang, Dashan Li
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Publication number: 20140240831Abstract: A system and method for stabilizing WBC systems utilizing retro reflectors.Type: ApplicationFiled: November 29, 2013Publication date: August 28, 2014Applicant: TERADIODE, INC.Inventor: Bien Chann
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Publication number: 20140185139Abstract: An optical apparatus, comprising a polarization beam splitter (PBS) comprising a birefringent crystal having a front-end and a back-end, and an optical rotator positioned on the back-end of the birefringent crystal. Included is an optical apparatus comprising a PBS comprising a birefringent crystal and an optical rotator, wherein the PBS is configured to receive a multiplexed optical signal comprising a first polarized optical signal and a second polarized optical signal, wherein the second polarized optical signal is orthogonal to the first polarized optical signal, separate the first polarized optical signal from the second polarized optical signal using the birefringent crystal, and rotate the second polarized optical signal using the optical rotator such that the rotated second polarized optical signal is parallel to the first polarized optical signal. The PBS may further comprise only one lens, wherein the lens is positioned on the front-end of the birefringent crystal.Type: ApplicationFiled: December 28, 2012Publication date: July 3, 2014Applicant: Futurewei Technologies, Inc.Inventors: Rongsheng Miao, Tongqing Wang, Changzheng Su, Xueyan Zheng, Yu Sheng Bai
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Publication number: 20140152961Abstract: A laser module includes a first laser light source, a second laser light source, and a third laser light source. Laser beams of the laser light sources are combinable into an overall laser beam. The laser beam of the first laser light source and the laser beam of the second laser light source have a first polarization, and the laser beam of the third laser light source has a second polarization. The laser beams of the first and the third laser light sources are coupled into the overall laser beam with the aid of mirror devices. The laser beam of the second laser light source is split, the polarization of the laser beam of the second laser light source being changed from the first polarization to the second polarization in a splitting path.Type: ApplicationFiled: December 5, 2013Publication date: June 5, 2014Applicant: Robert Bosch GmbHInventor: Gael PILARD
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Patent number: 8736896Abstract: An optical scanning unit includes a light source including a plurality of light-emitting elements; a light detector to detect a light beam emitted from the light source; a light-flux splitter, angled to the optical axis of the light beam emitted from the light source, having an aperture, a portion of reduced thickness susceptible to warping, a concave face of the warped light-flux splitter as a reflecting face, and a convex face of the warped light-flux splitter opposite the concave face as a non-reflecting face; and a light-flux splitter pressing unit to press the light-flux splitter onto a light-flux splitter holding member without blocking the aperture. Light beam passed the aperture is used as a write-use light flux. The reflecting face reflects a light flux other than the write-use light flux as a monitor-use light flux. The light-flux splitter pressing unit presses a portion of maximum convexity of the non-reflecting face.Type: GrantFiled: May 23, 2011Date of Patent: May 27, 2014Assignee: Ricoh Company, Ltd.Inventor: Susumu Mikajiri
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Publication number: 20140126057Abstract: There is provided a light-guide, compact collimating optical device, including a light-guide having a light-waves entrance surface, a light-waves exit surface and a plurality of external surfaces, a light-waves reflecting surface carried by the light-guide at one of the external surfaces, two retardation plates carried by light-guides on a portion of the external surfaces, a light-waves polarizing beamsplitter disposed at an angle to one of the light-waves entrance or exit surfaces, and a light-waves collimating component covering a portion of one of the retardation plates. A system including the optical device and a substrate, is also provided.Type: ApplicationFiled: January 7, 2014Publication date: May 8, 2014Applicant: Lumus Ltd.Inventors: Yaakov Amitai, Mali Hadad, Naamah Friedmann
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Publication number: 20140118813Abstract: There is provided a light-guide, compact collimating optical device, including a light-guide having a light-waves entrance surface, a light-waves exit surface and a plurality of external surfaces, a light-waves reflecting surface carried by the light-guide at one of the external surfaces, two retardation plates carried by light-guides on a portion of the external surfaces, a light-waves polarizing beamsplitter disposed at an angle to one of the light-waves entrance or exit surfaces, and a light-waves collimating component covering a portion of one of the retardation plates. A system including the optical device and a substrate, is also provided.Type: ApplicationFiled: January 7, 2014Publication date: May 1, 2014Applicant: Lumus LtdInventors: Yaakov Amitai, Mali Hadad, Naamah Friedmann
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Patent number: 8696131Abstract: A polarization element includes: a substrate; and a plurality of grid sections arranged on the substrate, wherein the grid sections each have protruding sections and recessed sections alternately arranged in a longitudinal direction of the grid sections at a pitch shorter than a wavelength of incident light, in the plurality of grid sections, the arrangement pitch P of the protruding sections is the same, and a proportion (D=L/P) of a length L of the protruding section to the arrangement pitch P of the protruding sections is the same, and a height of the protruding sections is different between the grid sections adjacent to each other.Type: GrantFiled: January 12, 2011Date of Patent: April 15, 2014Assignee: Seiko Epson CorporationInventor: Daisuke Sawaki
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Publication number: 20140078511Abstract: An apparatus for separating polarization of light includes a rotatable beam splitter including an input for receiving light with a first polarization and an output for outputting light with a second polarization different from the first polarization. Rotation of the rotatable beam splitter changes the first polarization of the input light to the second polarization of the output light. An optical network and method are also set forth.Type: ApplicationFiled: May 21, 2012Publication date: March 20, 2014Applicant: LUNA INNOVATIONS INCORPORATEDInventors: Eric E. Sanborn, Mark E. Froggatt
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Patent number: 8657448Abstract: A polarization separating element is configured to include a translucent substrate formed of a crystal material having birefringent properties and optically rotatory power and a polarization separating portion formed on the incidence-side surface of the translucent substrate so as to transmit a P-polarized light beam and reflect an S-polarized light beam. A reflecting element that reflects the S-polarized light beam reflected by the polarization separating portion is disposed so as to be separated approximately in parallel to the translucent substrate. A predetermined function is set such that the P-polarized light beam having passed through the polarization separating portion and been incident to the translucent substrate is converted so as to be parallel to the polarization plane of the S-polarized light beam so that the P-polarized light beam is output as the S-polarized light beam.Type: GrantFiled: May 29, 2012Date of Patent: February 25, 2014Assignee: Seiko Epson CorporationInventors: Shuho Kobayashi, Mitsuru Miyabara, Makoto Sakurai
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Publication number: 20140036364Abstract: A regular pentagonal arrangement of multiple selectively transmitting interfaces provides a beam-splitter and beam combiner in a compact and cost-effective package. The selectively transmitting interfaces are either provided on transparent plates, or alternatively can be external surfaces of a solid transparent prism. One or more of the sides of the regular pentagonal arrangement includes a transparent or absent surface, so that for beam-splitter operation, the input light can be introduced, and for beam combiner operation, the combined light can be emitted. In beam-splitter operation, the input optical beam is introduced through the transparent side, and is sequentially reflected between the plurality of selectively transmitting interfaces, with beams containing the wavelengths corresponding to each of the selectively transmitting interfaces being emitted from the corresponding surface to the outside of the beam-splitter.Type: ApplicationFiled: July 31, 2013Publication date: February 6, 2014Applicant: Optomak, Inc.Inventor: Sead Doric
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Patent number: 8643949Abstract: Disclosed is a polarization conversion apparatus, the apparatus including a first optical device capable of angle-converting incident unpolarized light to allow a polarization direction to be emitted in mutually different first and second linear polarizations, an FEL (Fly Eye Lens) including first and second MLAs (Micro Lens Arrays) arrayed with first and second micro lenses, where first and second linear polarizations of the first optical device incident on the first micro lenses are divided and condensed on an upper side and a bottom side of the second micro lenses of the second MLA, and a second optical device converting the first and second linear polarizations condensed on the upper side or the bottom side of the second MLA at the FEL to any one polarization of the first and second linear polarizations and emitting the polarization.Type: GrantFiled: April 5, 2011Date of Patent: February 4, 2014Assignee: LG Innotek Co., Ltd.Inventors: Eunsung Seo, Seungman Jeong, Hyunho Choi, Sanghun Lee
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Publication number: 20140009829Abstract: A method and apparatus for decorrelating coherent light from a light source, such as a pulsed laser, in both time and space in an effort to provide intense and uniform illumination are provided. For some embodiments employing a pulsed light source, the output pulse may be stretched relative to the input pulse width. The methods and apparatus described herein may be incorporated into any application where intense, uniform illumination is desired, such as pulsed laser annealing, welding, ablating, and wafer stepper illuminating.Type: ApplicationFiled: September 13, 2013Publication date: January 9, 2014Applicant: Applied Materials, Inc.Inventors: Dean JENNINGS, Timothy N. THOMAS, Stephen MOFFATT, Jiping LI, Bruce E. ADAMS, Samuel C. HOWELLS
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Publication number: 20130342905Abstract: The optical projection system according to the invention for a display has an imaging display unit, which emits image information at least partly in the form of unpolarized light, and imaging optics, wherein the imaging optics are configured to present a virtual image of image information generated by the display unit in a display area, and wherein the imaging optics are further configured to split the light emitted by the display unit into two partial beam paths each having a different polarization, to rotate the polarization direction of at least one of the two partial beam paths and to subsequently superimpose the two partial beam paths and to present them as a virtual image display in the display area.Type: ApplicationFiled: June 26, 2013Publication date: December 26, 2013Inventor: Eberhard Piehler
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Publication number: 20130342769Abstract: Device for generating polarized electromagnetic radiation has a diffuser and a polarizer. The diffuser is arranged in a beam path of the electromagnetic radiation. The polarizer is arranged in the beam path of the electromagnetic radiation, to be precise downstream of the diffuser in the direction of propagation of the electromagnetic radiation. The polarizer has a reflective side facing the diffuser, said reflective side being at least partly reflective to the electromagnetic radiation. The polarizer transmits electromagnetic radiation having a predefined polarization and reflects electromagnetic radiation not having the predefined polarization back to the diffuser. The diffuser scatters, in a non-polarization-maintaining manner, at least one portion of the reflected-back electromagnetic radiation not having the predefined polarization.Type: ApplicationFiled: June 25, 2013Publication date: December 26, 2013Inventors: Christopher KOELPER, Reiner WINDISCH, Christopher WIESMANN, Julius MUSCHAWECK