Liquid Crystal Diffraction Element Patents (Class 349/201)
  • Patent number: 10416518
    Abstract: The invention provides a light modulation element comprising a flexoelectric polarisable liquid-crystalline medium, characterized in that the switching from a boundary state A to a boundary state B comprises a combination of a distinct flexoelectric switching regime and a distinct dielectric switching regime upon application of an electric field. Furthermore, the present invention relates to the use of such a light modulation element in an electro-optical device, i.e. an LCD display device, and electrooptical devices comprising the light modulation element according to the present invention. Moreover, the invention relates to a method of production of the light modulation element according to the present invention.
    Type: Grant
    Filed: November 28, 2014
    Date of Patent: September 17, 2019
    Assignee: MERCK PATENT GMBH
    Inventors: Rachel Tuffin, Rebecca Proctor, Simon Siemianowski, Karl Skjonnemand, Owain Llyr Parri, Geoffrey Luckhurst
  • Patent number: 10359641
    Abstract: 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.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: July 23, 2019
    Assignees: DigiLens Inc., Rockwell Collins, Inc.
    Inventors: Milan Momcilo Popovich, Jonathan David Waldern
  • Patent number: 10261224
    Abstract: An optical element includes a transmission diffraction portion, which reflective portions and transmissive portions. The reflective portions are arranged at equal intervals along a given axis. Each reflective portion reflects light included in the visible light. The light reflected by the reflective portions forms a reflection image. The transmissive portions transmit the visible light. Each transmissive portion is sandwiched by two corresponding reflective portions that are adjacent to each other along the given axis. At least part of each reflective portion forms the reflection image by rendering a reflection angle of the light reflected by the reflective portions different from an angle of light incident on the reflective portions. The transmission diffraction portion forms diffracted images having different colors with diffracted light that is produced by diffracting light transmitted through the transmissive portions in a predetermined direction.
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: April 16, 2019
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Kazuhiro Yashiki, Akira Kubo, Chikara Sawamura, Haruna Ooki
  • Patent number: 10254551
    Abstract: A virtual image display device includes a light source unit, a polarization switching unit, an image generation unit, an optical path unit and a projection unit. The polarization switching unit switches a polarization direction of a light beam emitted from the light source unit. The optical path unit includes a first optical path through which the light beam having the first polarization direction travels and a second optical path through which the light beam having the second polarization direction travels. A first virtual image is displayed at a first distance with the light beam that has traveled through the first optical path. A second virtual image is displayed at a second distance farther than the first distance with the light beam that has traveled through the second optical path.
    Type: Grant
    Filed: March 26, 2015
    Date of Patent: April 9, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Tomo Kishigami, Hironori Nakahara, Nozomi Nakagawa
  • Patent number: 10132685
    Abstract: A detection device for a microscope comprises a dispersive element in the beam path of light and a selection element. The selection element separates a beam path of a spectral portion of the light from the beam path of the light. The detector device furthermore comprises a focusing optical unit configured to focus the beam path of the spectral portion of the light onto a sensor. By way of example, the microscope may be a confocal microscope.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: November 20, 2018
    Assignee: Carl Zeiss Microscopy GmbH
    Inventors: David Shafer, Tiemo Anhut, Matthias Wald
  • Patent number: 9989692
    Abstract: Methods and apparatus for providing one or more components for a display system, particularly for producing diffused light.
    Type: Grant
    Filed: October 7, 2013
    Date of Patent: June 5, 2018
    Assignee: Corning Incorporated
    Inventors: Michael Etienne, Richard Curwood Peterson, Vasudha Ravichandran, Kathleen Ann Wexell
  • Patent number: 9891456
    Abstract: According to an aspect, a liquid crystal display device includes a first substrate; a second substrate arranged to be opposed to the first substrate; a liquid crystal layer arranged between the first substrate and the second substrate; a first electrode arranged for each of a plurality of pixels that are arranged in a matrix; a second electrode arranged at a position opposed to the first electrode; a plurality of first areas in which light transmission is suppressed between the first substrate and the second substrate, the first areas extending in at least one direction to traverse the pixels; and a second area in which liquid crystal molecules in the liquid crystal layer are rotated according to an electric field acting between the first electrode and the second electrode, the second area being sandwiched between the first areas.
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: February 13, 2018
    Assignee: Japan Display Inc.
    Inventor: Toshiharu Matsushima
  • Patent number: 9846266
    Abstract: Provided is a liquid crystalline polymer film where noise caused by diffraction light is removed. The liquid crystalline polymer film is configured to include a first liquid crystalline polymer film formed by simultaneously performing a bottom-up alignment method by a lower alignment film and a top-down alignment method by using a groove structure and a second liquid crystalline polymer film formed on an upper portion of the first liquid crystalline polymer film by overcoating. The second liquid crystalline polymer film is configured so as to satisfy a refractive index matching condition with respect to the first liquid crystalline polymer film, so that noise caused by undesired diffraction phenomenon generated by the groove structure on the upper surface of the first liquid crystalline polymer film is removed.
    Type: Grant
    Filed: November 4, 2014
    Date of Patent: December 19, 2017
    Assignee: KYUNGPOOK NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventor: Hak-Rin Kim
  • Patent number: 9817367
    Abstract: The invention relates to a method for authenticating a diffractive element, e.g., a hologram, on an object or document (2), wherein at least two images of the diffractive element are recorded by means of a portable device (1). The recordings are taken in different spatial orientations of the portable device in relation to the diffractive element. Recording data are created from the images and the associated spatial orientations. The recording data are electronically compared with reference data. The comparison can be performed locally or in a server-based manner.
    Type: Grant
    Filed: July 7, 2014
    Date of Patent: November 14, 2017
    Assignee: U-NICA Technology AG
    Inventor: Jonas Reinhardt
  • Patent number: 9728567
    Abstract: A semiconductor sensor device is disclosed. The semiconductor sensor device includes a plurality of pixels and a phase grating structure. The phase grating structure has periodically arranged patterns and is disposed on the pixels.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: August 8, 2017
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: Jian-Bin Shiu, Wen-Zheng Yu
  • Patent number: 9638941
    Abstract: A photonic crystal type light modulator is provided. The photonic crystal type light modulator includes: a substrate; a first electrode disposed on the substrate; an active layer disposed on the first electrode, where an optical characteristic of the active layer changes according to application of an electric field; a second electrode disposed on the active layer; and a photonic crystal layer disposed on the second electrode and comprising a 2D grating.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: May 2, 2017
    Assignees: SAMSUNG ELECTRONICS CO., LTD., INHA Industry Partnership Institute
    Inventors: Jang-woo You, Yong-hwa Park, Yong-ho Lee, Chang-kwon Hwangbo, Jin-joo Kim
  • Patent number: 9551653
    Abstract: The inventive concept provides apparatuses and methods for monitoring semiconductor fabrication processes in real time using polarized light. In some embodiments, the apparatus comprises a light source configured to generate light, a beam splitter configured to reflect the light toward the wafer being processed, an objective polarizer configured to polarize the light reflected toward the wafer and to allow light reflected by the wafer to pass therethrough, a blaze grating configured to separate light reflected by the wafer according to wavelength, an array detector configured to detect the separated light and an analyzer to analyze the three-dimensional profile of the structure/pattern being formed in the wafer.
    Type: Grant
    Filed: March 23, 2016
    Date of Patent: January 24, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Woong-Kyu Son, Kwang-Hoon Kim, Deok-Yong Kim, Sung-Soo Moon, Jung-Hoon Byun, Ji-Hye Lee, Choon-Shik Leem, Soo-Bok Chin
  • Patent number: 9529430
    Abstract: The invention relates to a display, in particular an autostereoscopic or holographic display, for representing preferably three-dimensional information, wherein the stereo views or the reconstructions of the holographically encoded objects can be tracked to the movements of the associated eyes of one or more observers in a finely stepped manner within a plurality of zones of the movement region. In this case, the zones are selected by the activation of switchable polarization gratings.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: December 27, 2016
    Assignee: SEEREAL TECHNOLOGIES S.A.
    Inventor: Norbert Leister
  • Patent number: 9519089
    Abstract: Provided in one embodiment is an apparatus, comprising: an optical substrate configured to manipulate light received from a light source; and at least one diffractive element in one layer in the optical substrate, each diffractive element comprising: a plurality of sub-substrate structures separated from one another by a plurality of valleys, the sub-substrate structures comprising a material having a first refractive index; and a filler material filling at least partially at least some of the plurality of valleys, the filler material having a second refractive index that is unequal to the first refractive index.
    Type: Grant
    Filed: January 30, 2014
    Date of Patent: December 13, 2016
    Assignee: Rockwell Collins, Inc.
    Inventors: Robert D. Brown, James H. Stanley
  • Patent number: 9464779
    Abstract: There is provided a color sequential illumination device comprising in series: first and second light sources; a condenser lens; and a grating device. The grating device comprises at least one Bragg grating. The condenser lens directs light from the first and second sources into the grating device at first and second incidence angles respectively. The grating device diffracts light from the first and second sources into a common direction. Desirably, the Bragg gratings are Electrically Switchable Bragg Gratings. In one embodiment of the invention the light sources are Light Emitting Diodes. Alternatively lasers may be used.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: October 11, 2016
    Assignee: DIGILENS, INC.
    Inventors: Milan Momcilo Popovich, Jonathan David Waldern
  • Patent number: 9389430
    Abstract: A light deflection element is capable of deflecting incident light so as to follow a position of an observer and suppressing reduction in intensity of light that reaches eyes of the observer regardless of their position. The light deflection element includes: a first optical element configured to deflect incident light; a second optical element configured to change a deflection direction of emitted light by changing a refractive index thereof according to a voltage applied thereto; a third optical element; and a control section configured to control the voltage applied to the second optical element. At least one of interfaces between the first and second optical elements and the second and third optical elements is an aspheric surface. The aspheric surface has an optical power that compensates enlargement of the emitted light which is caused by refractive index distribution caused when a voltage is applied to the second optical element.
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: July 12, 2016
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Kouki Ichihashi, Masahiro Kasano, Yasuhiro Tanaka, Katsuhiko Hayashi
  • Patent number: 9322771
    Abstract: The inventive concept provides apparatuses and methods for monitoring semiconductor fabrication processes in real time using polarized light. In some embodiments, the apparatus comprises a light source configured to generate light, a beam splitter configured to reflect the light toward the wafer being processed, an objective polarizer configured to polarize the light reflected toward the wafer and to allow light reflected by the wafer to pass therethrough, a blaze grating configured to separate light reflected by the wafer according to wavelength, an array detector configured to detect the separated light and an analyzer to analyze the three-dimensional profile of the structure/pattern being formed in the wafer.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: April 26, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Woong-Kyu Son, Kwang-Hoon Kim, Deok-Yong Kim, Sung-Soo Moon, Jung-Hoon Byun, Ji-Hye Lee, Choon-Shik Leem, Soo-Bok Chin
  • Patent number: 9285639
    Abstract: A slit electrode, an array substrate and a display device are provided to improve the brightness uniformity of the display image and reduce the color shift, thereby improving the image quality. The slit electrode comprises at least one slit electrode unit including a plurality of first groups of slits arranged in a first direction and a plurality of second groups of slits arranged in a second direction, wherein each of the first groups of slits include at least one first slit arranged in the first direction, and each of the second groups of slits include at least one second slit arranged in the second direction, and wherein the first and the second groups of slits are arranged alternately.
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: March 15, 2016
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Yujuan Zhan, Park Ku Hyun
  • Patent number: 9179134
    Abstract: A multi-planar plenoptic display assembly with multiple spatially-varying light emitting and modulating planes. The display assembly includes at least one light emitting device and may include a modulating device used in conjunction according to display methods taught herein to display light field data. A display assembly controller may be used to render a light field with depth into a multi-planar plenoptic display assembly by assigning decomposed portions of the light field to the display assembly for display or presentation by differing ones of the emitting elements and by operating a modulating device to provide a parallax barrier. In one embodiment, a projector is used with bi-state screens. In another embodiment, two automultiscopic displays (either parallax barrier or lenticular lenses) are overlaid with a beam splitter. In a further embodiment, an oscillating mirror is used to temporally and optically move one automultiscopic layer (either parallax barrier or lenses) through space.
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: November 3, 2015
    Assignee: DISNEY ENTERPRISES, INC.
    Inventors: Nicola V. Ranieri, Simon Heinzle, Quinn Smithwick, Markus Gross, Wojciech Matusik, Lanny Smoot, Daniel Reetz
  • Patent number: 9063360
    Abstract: A two-dimensional/three-dimensional switchable display apparatus includes: a display panel; a first substrate disposed on the display panel; a first electrode layer disposed on the first substrate and including a plurality of first electrodes; a second substrate disposed on the first substrate; a second electrode layer disposed on the second substrate and including a plurality of second electrodes; and a liquid crystal layer disposed between the first and second substrates. A plurality of lens units are formed in association with a first position of the liquid crystal layer when a lens forming voltage profile is applied to the first electrodes and a common voltage is applied to the second electrodes. When the common voltage is applied to the first electrodes and the lens forming voltage is applied to the second electrodes, the plurality of lens units are formed in association with a second position spaced apart from the first position.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: June 23, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kyung-Ho Jung, Ji-Woong Jeong, Hae-Young Yun, Seung-Jun Jeong, Joo-Young Kim, Cheol-Woo Park, Il-Yong Yoon, Seung-Hoon Lee, Jin-Hwan Kim, Il-Joo Kim, Jung-Hwan Yi
  • Patent number: 9057914
    Abstract: A distribution-type compensator has an in-plane retardation of 18 nm±5 nm in a rectangular effective region with a long side and a short side. The slow axis direction of the distribution-type compensator changes continuously in a plane of the effective region and an angle difference between slow axis directions at any two positions in the effective region has a maximum value in a range of 10 degrees to 30 degrees. The distribution-type compensator is mounted to a projection-type display apparatus.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: June 16, 2015
    Assignee: JVC KENWOOD CORPORATION
    Inventor: Kazutaka Aboshi
  • Patent number: 9055248
    Abstract: A lens unit (120) shows longitudinal chromatic aberration and focuses an imaged scene into a first image for the infrared range in a first focal plane and into a second image for the visible range in a second focal plane. An optical element (150) manipulates the modulation transfer function assigned to the first and second images to extend the depth of field. An image processing unit (200) may amplify a modulation transfer function contrast in the first and second images. A focal shift between the focal planes may be compensated for. While in conventional approaches for RGBIR sensors contemporaneously providing both a conventional and an infrared image of the same scene the infrared image is severely out of focus, the present approach provides extended depth of field imaging to rectify the problem of out-of-focus blur for infrared radiation. An imaging system can be realized without any apochromatic lens.
    Type: Grant
    Filed: April 24, 2012
    Date of Patent: June 9, 2015
    Assignee: SONY Corporation
    Inventors: Muhammad Atif, Muhammad Siddiqui, Christian Unruh, Markus Kamm
  • Patent number: 8988649
    Abstract: The present invention relates to an image display device using a diffractive lens. An image display device according to an exemplary embodiment of the present invention includes a display panel displaying an image, and a diffractive lens for the image of the display panel to be recognized as a two-dimensional (2D) image or a three-dimensional (3D) image, wherein the diffractive lens modifies a path of light by using an optical principle of a Fresnel zone plate.
    Type: Grant
    Filed: October 13, 2010
    Date of Patent: March 24, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seung Jun Jeong, Kyung-Ho Jung, Seung-Hoon Lee, Hee-Seop Kim, Hae-Young Yun, Hwi Kim, Il-Joo Kim, Kyung-Bae Kim, Jung-Hwan Yi
  • Patent number: 8934078
    Abstract: A multiple glazing with variable scattering by liquid crystals includes first and second flat float glass sheets sealed on the edge of their internal faces by a sealing joint, in particular made of a given sealing material, in particular essentially organic, first and second electrodes, and a layer of liquid crystals with an average thickness E between 15 and 60 ?m inclusive of these values and incorporating spacers. The thickness A of each of the first and second glass sheets is less than or equal to 5.5 mm, and each of the internal faces coated with the first and second electrodes has a dioptric defect score, expressed in millidioptres, of less than 12E/15 where the thickness E of the liquid crystals is in ?m.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: January 13, 2015
    Assignee: Cardinal IG Company
    Inventors: Patrick Gayout, René Poix, Elodie Bouny, Jingwei Zhang
  • Patent number: 8902380
    Abstract: A grating sheet, a LCD device and methods for manufacturing the grating sheet and a liquid crystal display panel are provided. The grating sheet comprises a plurality of primary color gratings in parallel, each of which comprises a red R sub-grating, a green G sub-grating and a blue B sub-grating in parallel, and each sub-grating comprises an opening area and a reflective region disposed around the opening area and corresponds to a pixel unit on a sub-array substrate. The grating sheet, the liquid crystal display panel and methods for manufacturing the grating sheet and a liquid crystal display panel may be applicable to a system with a liquid crystal display.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: December 2, 2014
    Assignee: Beijing Boe Optoelectronics Technology Co., Ltd.
    Inventor: Linlin Lu
  • Patent number: 8873019
    Abstract: The present disclosure provides a detecting device of a birefringent lens grating. The detecting device includes a projection pattern disposed adjacent to the birefringent lens grating; an illuminating light source for projecting light onto the projection pattern and the birefringent lens grating; an image capturing device for capturing the light out from the birefringent lens grating and obtaining a projection pattern image of the projection pattern; and a controller for comparing the projection pattern image with a reference to determine a refractive index matching degree of the birefringent lens grating. The present disclosure further provides a detecting method, a manufacture method and a manufacture device of the birefringent lens grating.
    Type: Grant
    Filed: October 15, 2010
    Date of Patent: October 28, 2014
    Assignee: Superd Co. Ltd.
    Inventor: Bin Yu
  • Patent number: 8865275
    Abstract: A light absorption anisotropic film, wherein content of a liquid crystalline non-colorable low molecular weight compound is 30% by mass or less; and which is obtained by fixing the alignment of a dichroic dye composition comprising at least one type of azo-based dichroic dye having nematic liquid crystallinity; and shows a diffraction peak derived from a periodic structure in a direction parallel to the alignment axis on measurement of X-ray diffraction. The light absorption anisotropic film is high in dichroism.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: October 21, 2014
    Assignee: Fujifilm Corporation
    Inventors: Shinichi Morishima, Nobutaka Iwahashi
  • Patent number: 8854596
    Abstract: An active optical device includes a substrate; a plurality of refractive index variable regions formed on the substrate; and a voltage applier which applies an electric field to the plurality of refractive index variable regions.
    Type: Grant
    Filed: September 13, 2011
    Date of Patent: October 7, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sun-il Kim, Jun-hee Choi
  • Patent number: 8827464
    Abstract: A projection display device includes: a light source unit including light sources emitting light in a plurality of colors, condenser lenses and a color combining optical element; a total reflection prism that totally reflects a combined light flux from the color combining optical element so as to be guided to an image forming unit; and a projection lens. At least one of; an entry surface of the color combining optical element through which substantially parallel light fluxes from the condenser lenses enter, an exit surface of the color combining optical element through which the combined light flux exists, and an entry surface of the total reflection prism through which the combined light flux enters, is formed as a free curved surface where a shape of a section of the combined light flux is altered so as to be matched with a shape of an outline of the display area.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: September 9, 2014
    Assignee: Nikon Corporation
    Inventor: Aiko Namikawa
  • Patent number: 8817208
    Abstract: A display apparatus and a liquid crystal display device are provided. The display apparatus comprises a display device for displaying an image and a diffractive optical element. The diffractive optical element comprises pixel unit regions. Each of the pixel unit regions has a long pixel side and a short pixel side adjacent to each other. The diffractive optical element is disposed on a light emitting side of the display device and comprises first grating regions and second grating regions. The first grating regions have a first diffraction grating. The second grating regions have a second diffraction grating. An azimuth angle of the first diffraction grating is different from an azimuth angle of the second diffraction grating.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: August 26, 2014
    Assignee: Chi Mei Materials Technology Corporation
    Inventors: Wang-Yang Li, Ting-I Wu
  • Publication number: 20140211145
    Abstract: A cycloidal diffractive waveplate (50) comprising first and second substrate layers (52, 54), a liquid crystal layer (60C, 60H) provided between the first and second substrate layers, and transparent positive electrodes (56) and transparent negative electrodes (58) provided on the first substrate layer. The liquid crystal layer has a diffractive state (60C) in which the optical axes of the liquid crystal molecules are periodically rotated across a plane of the waveplate and a non-diffractive state (60H) in which the optical axes of the liquid crystal molecules are all orientated in the same direction in the plane of the waveplate. The electrodes (56, 58) are arranged in an alternating series, such that when an electric voltage is applied to the electrodes an electric field is produced in the plane of the waveplate and the liquid crystal layer is switched from the diffractive state to the non-diffractive state. A method of manufacturing the cycloidal diffractive waveplate is also provided.
    Type: Application
    Filed: January 28, 2014
    Publication date: July 31, 2014
    Applicant: U.S. Government as Represented by the Secretary of the Army
    Inventors: Nelson V. Tabirian, Sarik R. Nersisyan, Brian R. Kimball, Diane M. Steeves
  • Patent number: 8755024
    Abstract: The present invention relates to an image display device using a diffractive lens. An image display device according to an exemplary embodiment of the present invention includes a display panel displaying an image, and a diffractive lens for the image of the display panel to be recognized as a two-dimensional (2D) image or a three-dimensional (3D) image, wherein the diffractive lens modifies a path of light by using an optical principle of a Fresnel zone plate.
    Type: Grant
    Filed: October 13, 2010
    Date of Patent: June 17, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seung Jun Jeong, Kyung-Ho Jung, Seung-Hoon Lee, Hee-Seop Kim, Hae-Young Yun, Hwi Kim, Il-Joo Kim, Kyung-Bae Kim, Jung-Hwan Yi
  • Patent number: 8698982
    Abstract: A liquid crystal device includes a first substrate and a second substrate that are arranged so as to face each other, a liquid crystal layer that is pinched between the first substrate and the second substrate, one pair of polarizers that are arranged on both outer sides of the first substrate and the second substrate, a first optical element having a polarization separation function that is disposed in at least one spot of the first substrate, and a display area that contributes to display. The first optical element is arranged outside the display area.
    Type: Grant
    Filed: August 24, 2009
    Date of Patent: April 15, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Yutaka Tsuchiya, Takumi Seki
  • Patent number: 8686994
    Abstract: A full-screen 3D image display device provides a dynamic liquid crystal parallax barrier device for solving a 3D image resolution deterioration problem caused by view separation of a multi-view 3D image displayed by a conventional parallax barrier, and achieves the purpose of displaying a multi-view 3D image with a full-screen image resolution through a multi-view image dynamic combination and display procedure and a barrier electrode dynamic driving procedure.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: April 1, 2014
    Assignee: Unique Instruments Co., Ltd
    Inventor: Ming-Yen Lin
  • Patent number: 8681184
    Abstract: A display unit for binocular representation of a multicolor image including a control unit triggering an imaging element such that the imaging element generates in a temporal successive manner the image to be displayed for a first beam path and a second beam path as a first image and second image, respectively. The images are generated in a pre-distorted manner, opposite of the chromatic aberration of the respective beam path, such that the chromatic aberration generated in the respective beam path is compensated when the first and second image is displayed. The display unit includes a switching module which operates in temporal synchrony with the first and second image being generated, such that a user can see the first image only via the first beam path and the second image only via the second beam path.
    Type: Grant
    Filed: March 7, 2008
    Date of Patent: March 25, 2014
    Assignee: Carl Zeiss AG
    Inventors: Markus Seesselberg, Johannes Ruoff
  • Patent number: 8681423
    Abstract: A light modulator includes a light guide to guide light, a diffraction grating at a surface of the light guide, and a fluid having a refractive index substantially matched to a refractive index of the diffraction grating. The diffraction grating is to couple out a portion of guided light from the light guide using diffractive coupling. The index-matched fluid is to be selectively moved both into contact with the diffractive grating to defeat the diffractive coupling and out of contact with the diffraction grating to facilitate the diffractive coupling to modulate the coupled out guided light.
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: March 25, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Gary Gibson, David A Fattal
  • Publication number: 20140071394
    Abstract: Provided is an optical diffraction element that restricts overall thickness of the element while maintaining strength. The optical diffraction element comprises a substrate; an orientation layer that is formed on one surface of the substrate and includes anisotropic polymers that are oriented perpendicular to or inclined relative to a surface of the substrate in at least a partial region of the orientation layer; and a liquid crystal layer formed on the orientation layer. The liquid crystal layer includes a plurality of orientation patterns that are formed periodically and include liquid crystal molecules having different orientation directions, and the orientation direction for at least some of the orientation patterns is perpendicular to or inclined relative to the surface of the substrate, as a result of aligning with the orientation of the orientation layer formed on a bottom surface of the orientation patterns.
    Type: Application
    Filed: November 15, 2013
    Publication date: March 13, 2014
    Applicant: ARISAWA MFG. CO., LTD.
    Inventors: Yasuaki UMEZAWA, Kenichi WATABE
  • Publication number: 20140016081
    Abstract: A light diffraction element comprising a transparent substrate and a first orientation layer that is formed on one surface of the substrate and includes anisotropic polymers and a first pattern of an orientation direction arranged periodically in a first direction along the primary plane of the substrate. The first pattern includes three or more small regions that are arranged in the first direction and in which the orientation direction of the polymers included in the first orientation layer are different from each other, and generates diffracted light as a result of interference between light passed respectively through the three or more small regions.
    Type: Application
    Filed: September 20, 2013
    Publication date: January 16, 2014
    Applicant: ARISAWA MFG. CO., LTD.
    Inventors: Yuichi KAKUBARI, Yasuaki UMEZAWA, Kenichi WATABE
  • Patent number: 8587734
    Abstract: An adaptive liquid crystal lens system comprising a first substrate assembly, a second substrate assembly having a continuous phase profile, and a liquid crystal layer disposed between the first and second substrate assemblies. The first substrate assembly includes a first transparent substrate, an alignment layer, and a first conductive layer. The first conductive layer is disposed on the bottom surface of the first transparent substrate and adjacent to the top surface of the alignment layer. The second substrate assembly includes a second transparent substrate, a lens having a grooved surface, and a second conductive layer. The second conductive layer is a continuous layer adjacent to the lens. The liquid crystal layer is received in the grooves of the lens, and is adjacent to the bottom surface of the alignment layer. The alignment layer causes the liquid crystal material in the liquid crystal layer to be in a homeotropic state.
    Type: Grant
    Filed: March 8, 2010
    Date of Patent: November 19, 2013
    Assignee: The Curators of the University of Missouri
    Inventor: Guoqiang Li
  • Publication number: 20130300997
    Abstract: There is provided a device for reducing laser speckle comprising: a first transparent substrate; a second transparent substrate; an SBG sandwiched between said substrates; and transparent electrodes applied to said substrates. The first substrate is optically coupled to a laser source. The face of the second substrate in contact with the SBG is configured as an array of prismatic elements.
    Type: Application
    Filed: May 9, 2012
    Publication date: November 14, 2013
    Inventors: Milan Momcilo Popovich, Jonathan David Waldern
  • Patent number: 8564756
    Abstract: An optical system includes at least one lens and a liquid crystal optical element. The liquid crystal optical element is constructed so that a first liquid crystal lens and a second liquid crystal lens are oppositely arranged so that orientation directions cross at right angles with each other in a plane perpendicular to the optical axis, a voltage applied to the liquid crystal optical element is controlled and a shift of a focal position relative to incident light from a different object point is corrected, and when the liquid crystal optical element does not have a ray deflecting action, a far object point is brought into focus, while when the liquid crystal optical element has the ray deflecting action, a near object point is brought into focus.
    Type: Grant
    Filed: June 9, 2008
    Date of Patent: October 22, 2013
    Assignee: Olympus Corporation
    Inventor: Keiichi Kuba
  • Patent number: 8553197
    Abstract: A variable optical device for controlling the propagation of light has a liquid crystal layer (1), electrodes (4) arranged to generate an electric field acting on the liquid crystal layer, and an electric field modulation layer (3,71) arranged between the electrodes and adjacent the liquid crystal layer for spatially modulating said electric field in a manner to control the propagation of light passing through said optical device. The electric field modulation layer has either an optical index of refraction that is essentially spatially uniform, or a polar liquid or gel, or a very high low frequency dielectric constant material having a dielectric constant greater than 20, and preferably greater than 1000.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: October 8, 2013
    Assignee: Universite Laval
    Inventors: Tigran Galstian, Vladimir Presniakov, Karen Asatryan
  • Patent number: 8537310
    Abstract: A liquid crystal device includes a first polarization grating (101), a second polarization grating (102), and a liquid crystal layer (103). The first polarization grating (101) is configured to polarize and diffract incident light (190) into first and second beams (195,196) having different polarizations and different directions of propagation relative to that of the incident light (190). The liquid crystal layer (103) is configured to receive the first and second beams (195,196) from the first polarization grating (101). The liquid crystal layer (103) is configured to be switched between a first state that does not substantially affect respective polarizations of the first and second beams (195,196) traveling therethrough, and a second state that alters the respective polarizations of the first and second beams (195,196) traveling therethrough.
    Type: Grant
    Filed: October 9, 2008
    Date of Patent: September 17, 2013
    Assignee: North Carolina State University
    Inventors: Michael James Escuti, Chulwoo Oh, Ravi Komanduri, Brandon L. Conover, Jihwan Kim
  • Patent number: 8523354
    Abstract: Aspects of the present invention provide an electro-active lens and method for manufacturing the same that encapsulates liquid crystal using solid transparent optical material using an improved liquid crystal seal feature. The seal feature greatly reduces the visibility of the liquid crystal seal feature in an assembled electro-active lens. The seal feature is also structurally robust such that the electro-active lens can be processed to fit a spectacle frame without disturbing containment of the liquid crystal and without disrupting electrical connectivity to the lens used to alter the refractive index of the liquid crystal, thereby ensuring fabrication of a commercially viable electro-active lens.
    Type: Grant
    Filed: March 23, 2009
    Date of Patent: September 3, 2013
    Assignee: PixelOptics Inc.
    Inventors: Joshua N. Haddock, William Kokonaski, Roger Clarke, Philip Rawlins, Peter Crossley, James John
  • Publication number: 20130201094
    Abstract: This document describes various apparatuses embodying, and techniques for implementing, a virtual image device. The virtual image device includes a projector and a lens configured to generate a virtual image as well as two diffraction gratings, substantially orthogonally-oriented to each other, that act to increase a field-of-view of the virtual image. The virtual image device can be implemented as a pair of eyeglasses and controlled to generate the virtual image in front of lenses of the eyeglasses so that a wearer of the eyeglasses, looking through the lenses of the eyeglasses, sees the virtual image.
    Type: Application
    Filed: February 7, 2012
    Publication date: August 8, 2013
    Applicant: Microsoft Corporation
    Inventors: Adrian Travis, Jaron Z. Lanier, Joel S. Kollin
  • Patent number: 8488098
    Abstract: A phase-type diffraction device includes a substrate having a front surface and a solidified liquid crystal layer formed on the front surface of the substrate and constituted by a continuous film containing at least a liquid crystal compound. The solidified liquid crystal layer is constituted by first, second and third regions arranged periodically, the third region being interposed between the first region and the second region. The first region is optically anisotropic and the second region is optically isotropic, the third region is not optically isotropic, a degree of orientation of mesogens of the liquid crystal compound being lower than that of the first region. An in-plane average refractive index ni of the second region is different from an in-plane average refractive index na of the first region and an in-plane average refractive index nm of the third region is between ni and na.
    Type: Grant
    Filed: August 18, 2011
    Date of Patent: July 16, 2013
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Sosuke Akao, Takeshi Itoi
  • Patent number: 8488090
    Abstract: A backlight unit including a light source; and a liquid crystal panel. The liquid crystal panel includes a first substrate which guides light incident from the light source disposed at at least one side of the first substrate; a transparent electrode disposed on a surface of the first substrate; a second substrate; a reflective electrode disposed on a surface of the second substrate facing the transparent electrode; a liquid crystal layer disposed between the transparent electrode and the reflective electrodes; and a transparent film disposed between the transparent electrode and the reflective electrodes, the transparent film including a surface contacting the liquid crystal layer and patterned with grooves or ribs , and having a refractive index corresponding to at least one of an ordinary refractive index and an extraordinary refractive index of liquid crystals of the liquid crystal layer.
    Type: Grant
    Filed: October 13, 2011
    Date of Patent: July 16, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sergey Shestak, Kyung-hoon Cha
  • Patent number: 8441726
    Abstract: Light from an optical fiber is incident on a frequency dispersion element. The frequency dispersion element disperses the incident light into light beams in different directions according to their frequencies and directs the dispersed light beams to a lens. The lens develops the incident light beams over an xy plane according to their frequencies in a strip-like form. A frequency selective element has pixels arranged in a frequency dispersion direction and brings pixels located at positions corresponding to the frequency to be selected into a reflective state. A light beam selected by the frequency selective element is emitted from an optical fiber through the same path. By changing reflection characteristics of the frequency selective element according to each pixel, optical filter characteristics can be desirably changed so as to achieve change of passband width and frequency shift.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: May 14, 2013
    Assignee: Santec Corporation
    Inventor: Yasuki Sakurai
  • Patent number: 8436976
    Abstract: To provide a small-size display device of a simple structure which can perform both of superimpose display and finder field-of-view control.
    Type: Grant
    Filed: February 26, 2008
    Date of Patent: May 7, 2013
    Assignee: Nikon Corporation
    Inventor: Hiroyuki Koishi
  • Publication number: 20130107195
    Abstract: A light absorption anisotropic film, wherein content of a liquid crystalline non-colorable low molecular weight compound is 30% by mass or less; and which is obtained by fixing the alignment of a dichroic dye composition comprising at least one type of azo-based dichroic dye having nematic liquid crystallinity; and shows a diffraction peak derived from a periodic structure in a direction parallel to the alignment axis on measurement of X-ray diffraction. The light absorption anisotropic film is high in dichroism.
    Type: Application
    Filed: March 28, 2011
    Publication date: May 2, 2013
    Applicant: Fujifilm Corporation
    Inventors: Shinichi Morishima, Nobutaka Iwahashi