Prism Patents (Class 359/489.09)
  • Patent number: 10762612
    Abstract: There are several types of plenoptic devices and camera arrays available on the market, and all these light field acquisition devices have their proprietary file format. However, there is no standard supporting the acquisition and transmission of multi-dimensional information. It is interesting to obtain information related to a correspondence between pixels of a sensor of said optical acquisition system and an object space of said optical acquisition system. Indeed, knowing which portion of the object space of an optical acquisition system a pixel belonging to the sensor of said optical acquisition system is sensing enables the improvement of signal processing operations. The notion of pixel beam, which represents a volume occupied by a set of rays of light in an object space of an optical system of a camera along with a compact format for storing such information is thus introduce.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: September 1, 2020
    Assignee: INTERDIGITAL CE PATENT HOLDINGS
    Inventors: Laurent Blonde, Valter Drazic, Mozhdeh Seifi
  • Patent number: 10551575
    Abstract: An optical coupling device can couple incident light from a fiber into waveguides, but can reduce the coupling of return light from the waveguides into the fiber. A Faraday rotator layer can rotate by forty-five degrees, with a first handedness, respective planes of polarization of incident beams, and can rotate by forty-five degrees, with a second handedness opposite the first handedness, respective planes of polarization of return beams. A redirection layer can include at least one grating coupler that can redirect an incident beam of one polarization so that the redirected path extends within the redirection layer toward a first waveguide, and can redirect an incident beam of an opposite polarization so that the redirected path extends within the redirection layer toward a second waveguide. An optional birefringent layer can spatially separate incident beam having different polarizations, so that two single-polarization grating couplers can be used.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: February 4, 2020
    Assignee: Juniper Networks, Inc.
    Inventors: Jonathan Edgar Roth, Jared Bauters, Gregory Alan Fish
  • Patent number: 10267967
    Abstract: Provided is an optical component including: a pair of substrate bodies each having a refractive index of not lower than 2 with respect to infrared laser light, and having an incident surface or an emitting surface and an inclined surface inclined with respect to this surface at ?i; and an antireflective film which prevents reflection of normal incident infrared laser light, wherein ?i is not smaller than a complementary angle ?tB of a Brewster's angle ?B of infrared laser light incident on a plate member and smaller than a critical angle ?c, the inclined surfaces are opposed to each other via a gap, and the incident surface and the emitting surface are arranged in parallel to each other.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: April 23, 2019
    Assignees: Sumitomo Electric Industries, Ltd., Sumitomo Electric Hardmetal Corp.
    Inventors: Hiromi Iwamoto, Kunimitsu Yajima
  • Patent number: 10018790
    Abstract: A combined-wave (multiplexing) laser source of the present invention has an optical fiber; a plurality of laser sources 1a-1c that are in-place in a preset interval with regard to each other and which respectively emit laser light, a birefringent element 3 that separates spatially an incident laser light to an ordinary ray and an extraordinary ray and outputs separated rays every respective laser lights, and a convergence lens 4 that collects the ordinary ray and the extraordinary ray separated by said birefringent element relative to the respective laser lights and converges the rays to the optical fiber.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: July 10, 2018
    Assignee: SHIMADZU CORPORATION
    Inventors: Jiro Saikawa, Junki Sakamoto
  • Patent number: 9478930
    Abstract: Method and apparatus for beam coupling.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: October 25, 2016
    Assignee: RAYTHEON COMPANY
    Inventors: Robert Stultz, Brian Boland
  • Patent number: 9453952
    Abstract: A polarizing plate includes an outer protective film and a polarizer. The sum S of the product of the modulus of elasticity and the cube of the thickness in each layer is up to 150,000 Pa·mm3, and the value obtained by dividing the sum S by the Knoop hardness k of the outer protective film is 200 or more but up to 450. The polarizing plate is excellent in surface pencil hardness even when its thickness is reduced.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: September 27, 2016
    Assignee: FUJIFILM CORPORATION
    Inventors: Takahiro Ohno, Tatsuya Oba, Yoshitaka Maeda, Xiao Ling, Shun Inoue, Megumi Sekiguchi, Yohei Takahashi
  • Patent number: 9335492
    Abstract: A lens component of the present invention has an identification mark that can be formed without impairing the lens surface profile. The lens component includes: at least one set of lenses including, an element-side lens provided facing to a light emitting and receiving element; and a fiber-side lens provided facing to a transmitting and receiving optical fiber; an element-side lens forming surface formed on the element-side lens; and an identification mark provided on the element-side lens forming surface. The element-side lens and the identification mark are separated from each other by a distance that is at least the radius of the element-side lens.
    Type: Grant
    Filed: May 8, 2014
    Date of Patent: May 10, 2016
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Michiko Harumoto, Takayuki Shimazu, Masaki Oyagi
  • Patent number: 9335556
    Abstract: A backlight unit includes a waveguide assembly having a first wedge and a birefringent wedge disposed adjacent to, and arranged nose-to-tail with, the first wedge, to define an interface of the waveguide assembly. The birefringent wedge has different indices of refraction for light propagating through the waveguide assembly in first and second polarization states. The first wedge is configured to propagate the light in the second polarization state at a different speed than the birefringent wedge. A liquid crystal layer is configured to selectively switch the light between the first and second polarization states. An extraction grating is configured to extract the light from the waveguide assembly at an emission angle established in accordance with an angle of incidence of the light on the extraction grating determined by an extent to which the light encountered the interface while propagating through the waveguide assembly in the second polarization state.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: May 10, 2016
    Assignee: Microsoft Technology Licensing, LLC
    Inventor: Adrian Travis
  • Patent number: 9235012
    Abstract: An optical communication module includes an optical transmitter, an optical coupling lens, and an optical fiber. The optical coupling lens includes a first surface, a second surface, a reflection surface, a first lens unit, and a second lens unit. An included angle between the first surface and the second surface is 82 degrees. An included angle between the first surface and the reflection surface is 45 degrees. The first lens unit is positioned on the first surface. The second lens unit is positioned on the second surface. The optical transmitter is positioned towards the first surface and aligned with the first lens unit. An optical fiber is positioned towards the second surface and aligned with the second lens unit.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: January 12, 2016
    Assignee: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Yi Hung, I-Thun Lin
  • Patent number: 9151961
    Abstract: An optical component including: a first substrate body which is made of a platy member allowing infrared laser beam to be transmitted therethrough and having a refractive index of 2 to 4 with respect to the infrared laser beam, and which has an input surface where the infrared laser beam is incident, and an inclined surface inclined to the input surface at an angle of inclination, calculated in accordance with Formula (I): n(?)×sin ?(?)=1×sin(x)??(I) and formed with a transmitting phase retarding film that shifts a phase of the infrared laser beam; and a second substrate body which is made of the platy member and which has an output surface from which the infrared laser beam is emitted, and an inclined surface inclined at the angle of inclination to the output surface and formed with the transmitting phase retarding film. The inclined surfaces of both substrate bodies are arranged as opposed to each other so as to have a space therebetween.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: October 6, 2015
    Assignees: Sumitomo Electric Hardmetal Corp., Sumitomo Electric Industries, Ltd.
    Inventors: Hiromi Iwamoto, Kunimitsu Yajima
  • Patent number: 8964294
    Abstract: Speckle effect in scanning display systems that employs polarized phase-coherent light is reduced by depolarizing the phase-coherent light using a depolarizer and scanning the depolarized light for producing desired images.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: February 24, 2015
    Assignee: Texas Instruments Incorporated
    Inventor: Regis Grasser
  • Publication number: 20150036215
    Abstract: To provide a thin optical sheet having improved efficiency for light utilization, an optical sheet (5) of one mode of the present invention includes, in sequence from a light entry side to a light emission side, a plurality of first prisms (13), a ¼ wavelength plate (11), and a polarized-light separating element (12), the plurality of first prisms (13) each having (i) a first surface (13a) through which light enters the first prism and (ii) a second surface (13b) that reflects the light, having entered the first prism, toward the light emission side, the optical film further including, between the plurality of first prisms in an in-plane direction of the optical film, a second prism (14) that reflects light.
    Type: Application
    Filed: February 15, 2013
    Publication date: February 5, 2015
    Inventors: Tatsuo Uchida, Yoshito Suzuki, Tohru Kawakami, Kazuo Sekiya, Masahiro Nishizawa, Takahiro Ishinabe, Katsunori Ehara, Yoshihiro Hashimoto, Yasuhisa Itoh, Yoshitaka Yamamoto, Yutaka Ishii
  • Patent number: 8937768
    Abstract: 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: Grant
    Filed: May 4, 2011
    Date of Patent: January 20, 2015
    Assignee: Viscore Technologies Inc.
    Inventors: Wenlu Wang, Kinwai Leong, Yunqu Liu
  • Patent number: 8902503
    Abstract: 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: Grant
    Filed: January 7, 2014
    Date of Patent: December 2, 2014
    Assignee: Lumus Ltd.
    Inventors: Yaakov Amitai, Naamah Levin, Mali Mansharof
  • Patent number: 8830581
    Abstract: A polarization switching apparatus has a first birefringent polarizer formed as a composite prism and disposed to direct incident light of a first polarization along a first optical path and light of a second polarization along a second optical path, wherein the second optical path is oblique to the first optical path. A beam redirector is disposed to redirect the first optical path from the first birefringent polarizer toward an input face of a second birefringent polarizer; wherein the second birefringent polarizer is also formed as a composite prism and is disposed to combine incident light of the first and second polarizations onto a common output path. A shutter apparatus is actuable to selectively block light of the first polarization or light of the second polarization from the input face of the second birefringent polarizer.
    Type: Grant
    Filed: May 2, 2012
    Date of Patent: September 9, 2014
    Assignee: Corning Incorporated
    Inventors: Paul G Dewa, Michael M Dunn, Stephen K Mack, Brian Monroe McMaster, Robert L Michaels, Paul Francis Michaloski
  • Publication number: 20140204459
    Abstract: A high efficiency light combination module of projection system includes a cubic polarizing beam splitter prism serving as a main body around which four lens arrays, three retarders, and three optical plates are arranged, which is used in combination with coatings that enables transmission or reflection of specific lights to allow different color lights incident from different directions to be combined as a single illumination light beam and to allow the single illumination light beam so combined to be uniform by the lens arrays to facilitate light collection and projection by a panel and a projection lens arranged behind. A polarization conversion film is set at light outgoing port to transfer the polarization states of the combined single illumination light beam into a specific polarized light for a liquid crystal projection system.
    Type: Application
    Filed: January 22, 2013
    Publication date: July 24, 2014
    Applicants: CYNOSURE PHOTONICS CORP.
    Inventor: Ho Lu
  • Publication number: 20140176818
    Abstract: Polarizing beam splitters and systems incorporating such beam splitters are described. More specifically, hybrid polarizing beam splitters and systems with such beam splitters that incorporate polymeric reflective polarizers aligned with MacNeille or wire grid reflective polarizers are described.
    Type: Application
    Filed: December 20, 2013
    Publication date: June 26, 2014
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Philip E. Watson, Yarn Chee Poon, Andrew J. Ouderkirk
  • Publication number: 20140168772
    Abstract: An apparatus for simultaneously measuring linear and circular polarization components of light is provided, and contains no moving parts. The apparatus may include a prism assembly configured to receive collimated light and splits the light into different directions according to its polarization state. The apparatus may also include lenses configured to collimate light from an image plane to be analyzed by the prism assembly, or direct the light that is split by the prism assembly to different detectors or locations on an image plane.
    Type: Application
    Filed: December 19, 2012
    Publication date: June 19, 2014
    Applicant: THE AEROSPACE CORPORATION
    Inventor: John D. Perreault
  • Patent number: 8749886
    Abstract: A beamsplitter that includes a first prism including an input face, an output face and an oblique face and a second prism including an output face and an oblique face, the oblique face of the second prism being coupled to the oblique face of the first prism. A polarizing coating is sandwiched between the oblique face of the first prism and the oblique face of the second prism, and a linear polarizer coupled to at least one of the output face of the first prism and the output face of the second prism.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: June 10, 2014
    Assignee: Google Inc.
    Inventor: Anurag Gupta
  • Publication number: 20140071531
    Abstract: An embodiment of the invention relates to an optical component (10, 300) for processing optical signals comprising a rhombic prism (20) having a first surface (SF1), a second surface (SF2) that is parallel to the first surface (SF1), a third surface (SF3) that is angled relative to the first and second surfaces (SF1, SF2) and connects the first and second surfaces (SF1, SF2), and a fourth surface (SF4) that is parallel to the third surface (SF3) and connects the first and second surfaces (SF1, SF2), wherein the third surface (SF3) is covered by a polarization dependent layer (PDL) capable of transmitting radiation having a first polarization and capable of reflecting radiation having a second polarization, said first and second polarizations being perpendicular to each other.
    Type: Application
    Filed: September 12, 2013
    Publication date: March 13, 2014
    Applicant: u2t Photonics AG
    Inventors: Andreas MATISS, Jens Stephan, Andreas Fischer, Benjamin Völker
  • Patent number: 8657448
    Abstract: 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: Grant
    Filed: May 29, 2012
    Date of Patent: February 25, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Shuho Kobayashi, Mitsuru Miyabara, Makoto Sakurai
  • Patent number: 8643948
    Abstract: 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: Grant
    Filed: April 17, 2008
    Date of Patent: February 4, 2014
    Assignee: Lumus Ltd.
    Inventors: Yaakov Amitai, Mali Hadad, Naamah Friedmann
  • Patent number: 8611008
    Abstract: An optical system capable of enhancing a specific polarization state of light beam comprises a polarization beam splitter and a polarization state converter. The polarization beam splitter separates an input light beam into a first light beam of first polarization state and a second light beam of second polarization state. The first polarization state is different from the second polarization state. The second light beam is input into the polarization state converter and converted to a third light beam having significantly much more components of first polarization state. The polarization state converter has a configuration providing total reflection or high reflection function. The configuration includes at least one anisotropic optical thin film that is disposed between an incident medium of high refractive index and a medium of low refractive index.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: December 17, 2013
    Assignee: National Taipei University of Technology
    Inventor: Yi-Jun Jen
  • Publication number: 20130250415
    Abstract: A beamsplitter that includes a first prism including an input face, an output face and an oblique face and a second prism including an output face and an oblique face, the oblique face of the second prism being coupled to the oblique face of the first prism. A polarizing coating is sandwiched between the oblique face of the first prism and the oblique face of the second prism, and a linear polarizer coupled to at least one of the output face of the first prism and the output face of the second prism.
    Type: Application
    Filed: March 21, 2012
    Publication date: September 26, 2013
    Applicant: GOOGLE INC.
    Inventor: Anurag Gupta
  • Patent number: 8540372
    Abstract: Three dimensional projection systems may be single projector or multiple projector systems. These 3D projection systems may include a one or more polarization conversion systems (PCS). Each PCS may be designed for relatively small throw ratios and thus, may be designed to accommodate the small throw ratios. Each PCS may include a polarizing beam splitter, a first optical stack, a reflector and a second quarter wave retarder. The first optical stack may include a rotator, a polarizer, a polarization switch and a first quarter wave retarder. Each PCS may receive light from a respective projector, and the PBS in each PCS may direct the light toward the first optical stacks. The light may be converted to a different polarization state as it passes through the first optical stack. The converted light may then be re-directed by a reflecting element to a second quarter wave retarder. The second quarter wave retarder may convert linearly polarized light to circularly polarized light.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: September 24, 2013
    Assignee: RealD Inc.
    Inventors: David A. Coleman, Miller H. Schuck, Gary D. Sharp
  • Patent number: 8531766
    Abstract: A polarization-separation device includes: a beam splitter that includes a beam-separating surface, on which a light beam that contains a first light beam and a second light beam impinges, wherein polarization direction of the first light beam and polarization direction of the second light beam are perpendicular to each other, and incident angle of the first light beam and incident angle of the second beam vary independently while incident into the beam-separating surface; a first polarizer arranged in an optical path of light beams having transmitted through the beam splitter, and allows the first light beam to transmit therethrough; and a second polarizer arranged in an optical path of light beams reflected from the beam splitter, and allows the second light beam to transmit therethrough.
    Type: Grant
    Filed: June 29, 2010
    Date of Patent: September 10, 2013
    Assignee: Ricoh Company, Limited
    Inventors: Toshiaki Tokita, Nobuaki Kubo, Kenichiro Saisho
  • Patent number: 8467128
    Abstract: A polarizing cube includes a pair of identical and symmetric triangular prisms which sandwich a thin optical composite plate containing a planner array of reflective straight wires spaced apart in parallel as a built-in wire grid polarizer. All of its subcomponents and the polarizing cube itself are physically and optically symmetrical to one of its diagonal planes so as to provide improved integration and robustness for projection display application. The cubic configuration of the disclosed polarizer can be readily produced through common means and sequences typically used in semiconductor wafer fabrication processes, including photolithographic patterning, gap dielectric filling and planarization, and wafer thinning, bonding and cutting among others.
    Type: Grant
    Filed: November 19, 2009
    Date of Patent: June 18, 2013
    Assignee: Shanghai Lexvu Opto Microelectronics Technology Co., Ltd.
    Inventor: Herb He Huang
  • Publication number: 20130070331
    Abstract: A polarization switching apparatus has a first birefringent polarizer formed as a composite prism and disposed to direct incident light of a first polarization along a first optical path and light of a second polarization along a second optical path, wherein the second optical path is oblique to the first optical path. A beam redirector is disposed to redirect the first optical path from the first birefringent polarizer toward an input face of a second birefringent polarizer; wherein the second birefringent polarizer is also formed as a composite prism and is disposed to combine incident light of the first and second polarizations onto a common output path. A shutter apparatus is actuable to selectively block light of the first polarization or light of the second polarization from the input face of the second birefringent polarizer.
    Type: Application
    Filed: May 2, 2012
    Publication date: March 21, 2013
    Inventors: Paul G. Dewa, Michael M. Dunn, Stephen K. Mack, Brian Monroe McMaster, Robert L. Michaels, Paul Francis Michaloski
  • Patent number: 8400713
    Abstract: Speckle effect in scanning display systems that employs polarized phase-coherent light is reduced by depolarizing the phase-coherent light using a depolarizer and scanning the depolarized light for producing desired images.
    Type: Grant
    Filed: July 29, 2008
    Date of Patent: March 19, 2013
    Assignee: Texas Instruments Incorporated
    Inventor: Regis Grasser
  • Publication number: 20130063819
    Abstract: Methods and apparatus for polarizing un-polarized laser light by passing a beam of un-polarized laser light through an isotropic, right-angle prism having a dielectric coating on its hypotenuse incident upon the coated hypotenuse at an angle of incidence less than the critical angle wherein the net-refractive index of the coating and angle of incidence on the hypotenuse are mutually selected to achieve maximum separation of the S and P constituents of the beam with a maximum percent of the S-constituent internally reflected and a maximum percent of the P-constituent transmitted through the coated hypotenuse.
    Type: Application
    Filed: September 13, 2011
    Publication date: March 14, 2013
    Inventor: Donald K. Wilson
  • Patent number: 8393737
    Abstract: A light engine combines light of first, second, and third color ranges using three pentagonal prism elements. Each prism has first and second diagonal surfaces. Each first diagonal surface has a first dichroic treatment and each second diagonal surface has a second dichroic treatment. The prisms are arranged with the first diagonal surface of the first prism juxtaposed with one diagonal surface of the third prism and with the second diagonal surface of the second prism juxtaposed with the other diagonal surface of the third prism. A first light beam of the first color is reflected at a right angle by the first diagonal surfaces, and a second light beam is reflected at a right angle by the second diagonal surfaces. A third light beam of the third color passes unreflected through the surfaces to produce a combined light beam or common output light path.
    Type: Grant
    Filed: March 3, 2011
    Date of Patent: March 12, 2013
    Assignee: Ford Global Technologies, LLC
    Inventors: Mahendra S. Dassanayake, Donald P. Bilger
  • Patent number: 8388150
    Abstract: An image forming system is described that includes a light source that provides a light beam and an anamorphic refractive optical element. A first outer surface of the anamorphic element faces the light source and includes a toric surface. The light beam is incident upon the first outer face and then an incident surface of the anamorphic element. The anamorphic element directs the light beam to an image forming device. An illumination system is also described where an anamorphic element includes a toric surface and a facet surface.
    Type: Grant
    Filed: February 15, 2012
    Date of Patent: March 5, 2013
    Assignee: 3M Innovative Properties Company
    Inventor: William E. Phillips, III
  • Publication number: 20120134022
    Abstract: In accordance with one embodiment of the present disclosure, an optical signal bidirectional transmission system comprises a bi-directional port configured to receive and output optical beams, an input port configured to receive beams and an output port configured to output beams, and only one birefringent crystal. A first beam manipulation system configured to adjust polarization of the beams, and direct the beams from the bi-directional port to the birefringent crystal. A second beam manipulation system configured to adjust polarization of the beams, and direct the beams from the input port to the birefringent crystal. The birefringent crystal is configured to direct the beams received from the first beam manipulation system such that the beams may exit the second beam manipulation system through the output port and direct the beams received from the second beam manipulation system such that the beams may exit the first beam manipulation system through the bi-directional port.
    Type: Application
    Filed: November 30, 2010
    Publication date: May 31, 2012
    Applicant: FUJITSU LIMITED
    Inventors: Alexander Umnov, Takao Naito
  • Patent number: 8164620
    Abstract: A stereo projection optical system includes an image engine configured for providing light superimposed spatial information, a color selector positioned to receive a light output of the image engine, a transmission-type light modulator positioned to receive an emergent light of the color selector. The color selector is configured for selectively modifying the polarization of the light output according to the wavelength of the light output. The transmission-type light modulator alternates between a dark state and a bright state. From the foregoing, it will be apparent that the stereo projection optical system according to the present invention provides advantages in that its structure can be simplified with the reduction of its size by synthesizing lift and right image signals by displaying the stereoscopic image signal using a single projector.
    Type: Grant
    Filed: December 7, 2007
    Date of Patent: April 24, 2012
    Assignee: Hon Hai Precision Idnustry Co., Ltd.
    Inventors: Chien-Wen Hsu, Chia-Hung Kao, Huan-Liang Lo, Sheng-Chung Huang
  • Patent number: 8136947
    Abstract: An image forming system is described that includes a light source that provides a light beam and an anamorphic refractive optical element. A first outer surface of the anamorphic element faces the light source and includes a toric surface. The light beam is incident upon the first outer face and then an incident surface of the anamorphic element. The anamorphic element directs the light beam to an image forming device. An illumination system is also described where an anamorphic element includes a toric surface and a facet surface.
    Type: Grant
    Filed: November 24, 2008
    Date of Patent: March 20, 2012
    Assignee: 3M Innovative Properties Company
    Inventor: William E. Phillips, III
  • Publication number: 20120044502
    Abstract: An optical probe for splitting a beam of light into multiple beams. The optical probe may comprise a first polarizing beam splitter having a first polarization axis, a second polarizing beam splitter having a second polarization axis orthogonal to the first polarization axis, a first half wave plate and a second half wave plate, and optionally a first birefringent phase plate, and a second birefringent phase plate. The first half wave plate may be located before first polarizing beam splitter, and the second half wave plate may be located after the first polarizing beam splitter, relative to the propagation of the light beam. The optical probe may further include a lens for collimating the four light beams. A profilometer includes the optical probe for splitting a beam of light into four light beams, and a scanner for traversing the optical probe over a surface of an element to be measured.
    Type: Application
    Filed: March 20, 2010
    Publication date: February 23, 2012
    Applicant: ASE OPTICS INC.
    Inventors: Damon W. Diehl, Christopher T. Cotton
  • Patent number: 8094374
    Abstract: A beam shaping module capable of receiving a polarized beam from a light source is disclosed including a beam splitter for splitting the polarized beam into a first beam and a second beam wherein the polarization directions of the first beam and the second beam are perpendicular to each other, and a beam combiner for shaping and combining the first beam and the second beam, where the beam combiner is configured to reverse the energy distribution pattern of one of the first beam and the second beam.
    Type: Grant
    Filed: March 18, 2008
    Date of Patent: January 10, 2012
    Assignee: Industrial Technology Research Institute
    Inventors: Chia-Hsu Chen, Yu-Sheng Liu
  • Patent number: 8081381
    Abstract: The present invention is a time division multiplexed beam combination for laser signal generation. In one aspect, the time division multiplexed beam combination employs a mechanical implementation. In a second aspect, the time division multiplexed beam combination employ a polarization interlacing.
    Type: Grant
    Filed: July 22, 2008
    Date of Patent: December 20, 2011
    Assignee: Lockhead Martin Corporation
    Inventor: Nicholas J. Krasutsky
  • Publication number: 20110273772
    Abstract: An optical component is disclosed having 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.
    Type: Application
    Filed: May 4, 2011
    Publication date: November 10, 2011
    Applicant: VISCORE TECHNOLOGIES INC.
    Inventors: Wenlu Wang, Kinwai Leong, Yunqu Liu
  • Patent number: 7982954
    Abstract: Disclosed herein are light collectors for use in projection applications. The light collectors gather light from surface emitting sources (e.g., LEDs) of differing color (or same color in some embodiments) using input lightpipes. A light collection system splits the light into orthogonal linear polarization states and efficiently propagates the light by use of a polarizing beamsplitter (PBS) and a reflecting element. Further, the light collection system may efficiently homogenize the light using an output lightpipe in a lightpath from the output of the PBS and the reflecting element. In addition, the light collection system may present a single, linear polarization at the output through the use of a half-wave switch (LC cell) in some embodiments or ColorSelect filter in other embodiments. The light collection system may be integrated into a single, monolithic glass, plastic or combination glass/plastic assembly.
    Type: Grant
    Filed: July 18, 2007
    Date of Patent: July 19, 2011
    Assignee: RealD Inc.
    Inventors: Miller H. Schuck, Michael G. Robinson
  • Publication number: 20110141765
    Abstract: A planar light source module including a light guide plate (LGP), a light source, an optical film, and a reflector is provided. The light source for emitting a light beam is disposed adjacent to the side light-incident surface, wherein the light beam enters the LGP from a side light-incident surface and leaves the LGP from a light-emergence surface in an emergence angle ?1, ?1?70 degrees. The optical film is disposed above the LGP to collimate the light beam from the LGP. The optical film includes a prism layer module and a bonding layer module stacked alternately. The prism layer module comprises prism layers and each prism layer includes micro-prisms. The bonding layer module comprises at least one bonding layer bonded with two prism layers adjacent thereto. The refraction index of the prism layers is greater than that of the bonding layer. The reflector is disposed under the bottom surface.
    Type: Application
    Filed: December 2, 2010
    Publication date: June 16, 2011
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Yem-Yeu Chang, Chia-Jen Ting