Plural Projection Paths With Single Light Source Patents (Class 353/34)
  • Patent number: 10655955
    Abstract: The present disclosure provides a time-space coding method and apparatus for generating a structured light coded pattern. Different coded patterns are outputted in time division by driving different light-emitting points based on a regular light-emitting lattice so as to time-space label a target object or a projection space. This method effectively overcomes the limitations of the fact that in the prior art, a plurality of projectors is needed to project different patterns in time division when it is required to project time-space labels of a plurality of patterns. According to the present method, by driving different light-emitting elements on the light-emitting substrate, different coded patterns are formed, and by using a time-division output technology, time-space labeling of an object may be finalized with only one projector. Moreover, this method may significantly improve the accuracy and robustness of three-dimensional depth measurement through time-space coding with a depth decoding algorithm.
    Type: Grant
    Filed: August 13, 2018
    Date of Patent: May 19, 2020
    Assignee: NINGBO YINGXIN INFORMATION TECHNOLOGY CO., LTD.
    Inventors: Chenyang Ge, Huimin Yao, Yanhui Zhou
  • Patent number: 10652445
    Abstract: A light generator system may include: a light source providing a diverging light beam, a first lens element having a first surface and a second surface, the first surface of the first lens element having a positive optical power in a first cross section, a second lens element having a first surface and a second surface, the first surface of the second lens element having a negative optical power in a second cross section different from the first cross section, and a multiplication function on at least one of the second surface of the first lens element, the first surface of the second lens elements, or the second surface of the second lens element, in the first cross section.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: May 12, 2020
    Assignee: Facebook Technologies, LLC
    Inventor: Nadav Grossinger
  • Patent number: 10471351
    Abstract: Techniques for distributed determination of scene information are described herein. Scene information may include, for example, information associated with geometries, lighting, colors, texture, shading, shadows, audio, camera attributes, and other information associated with a scene. A first portion of scene information may, for example, be determined by one or more first components, while a second portion of scene information may, for example, be determined by one or more second components. In some cases, at least part of the first portion of scene information may be provided from the one or more first components to the one or more second components. The one or more second components may use the at least part of the first portion of scene information in combination with at least part of the second portion of scene information to generate at least part of a resulting image and/or resulting audio associated with the scene.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: November 12, 2019
    Assignee: Amazon Technologies, Inc.
    Inventor: Juan Pablo Ferreyra
  • Patent number: 10244217
    Abstract: A projection display unit includes a projection optical system, a polarization separation device, and a detection optical system. The projection optical system includes an illuminator, a projection lens, and a light valve. The light valve modulates illumination light supplied from the illuminator on a basis of an image signal, and outputs the modulated illumination light toward the projection lens. The polarization separation device is disposed between the light valve and the projection lens. The polarization separation device separates entering light into a first polarized component and a second polarized component, and outputs the first polarized component and the second polarized component in respective directions that are different from each other. The detection optical system includes an imaging device.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: March 26, 2019
    Assignee: Sony Corporation
    Inventors: Kazumasa Kaneda, Toshio Mamiya
  • Patent number: 10222683
    Abstract: A pixel displacing correction section performs a pixel displacing correction adapted to shift a position of the sub-pixel in the display target image on the image signal of the sub-pixel supplied to at least one of the light modulators to thereby compensate position shifts of the display positions of the sub-pixels constituting the images of the respective color components to be displayed on the display surface with respect to a reference position. A boundary correction section decreases the luminance of the image signal of a sub-pixel of another color component than that of the sub-pixel at roughly the same decreasing rate of the display luminance due to the pixel displacing correction of the sub-pixel caused in the pixel, to which the sub-pixel belongs, with respect to the sub-pixel, a part or the whole of which is placed outside the effective display range due to the pixel displacing correction.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: March 5, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Taku Kitagawa
  • Patent number: 10146118
    Abstract: A first illumination device includes a light source that emits light having directivity, and a uniform illumination optical system including a first fly-eye lens that includes a plurality of lenses two-dimensionally arranged and allows light based on emitted light from the light source to pass through the first fly-eye lens. An illumination target region has a planar shape having a side extending along a direction substantially parallel to a long-axis direction or a short-axis direction of an intensity distribution shape of emitted light from the light source, and a periodic direction of an array of the lenses in the first fly-eye lens is inclined with respect to the long-axis direction or the short-axis direction.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: December 4, 2018
    Assignee: Sony Corporation
    Inventor: Koji Miura
  • Patent number: 10061186
    Abstract: A mounting system is provided. The mounting system includes a plurality of image modules that project an image. A rotation bracket is disposed adjacent to each of the plurality of image modules. The rotation bracket is fixed to a base bracket. The base bracket is configured such that the plurality of image modules is coupled to a control unit and an image drive board. A mounting bracket is disposed adjacent to a position between the rotation bracket and the base bracket. A first reflective mirror is disposed adjacent to each of the image modules and fixed to the rotation bracket. A second reflective mirror is disposed on a lower surface of the base bracket at a position corresponding to the first reflective mirror. The base bracket is configured to be movable upwards or downwards in a height direction to adjust a height of the projected image.
    Type: Grant
    Filed: April 10, 2017
    Date of Patent: August 28, 2018
    Assignee: HYUNDAI MOTOR COMPANY
    Inventors: Nak Kyoung Kong, Jong Min Park, Joong Ryoul Lee, Ki Hong Lee, Kap Je Sung, Jin Ho Hwang, Keon Soo Jin, Jae Wook Lee, Chang Joon Seok
  • Patent number: 10045012
    Abstract: A display apparatus and a method of controlling a screen thereof are provided. The method includes displaying a rectangular screen including a digital image in a display area, receiving information to modify a shape of the rectangular screen, and modifying and displaying the shape of the rectangular screen based on a coordinate value of a horizontal axis of the display area, and the received information. A height of the modified screen decreases as the height is closer to the coordinate value, and the digital image decreases in size as the digital image is closer to the coordinate value to correspond to the height.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: August 7, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ji-gwang Kim, Joon-soo Kim
  • Patent number: 9946089
    Abstract: A coded pattern projector apparatus comprises a surface-emitting array of emitters comprising a plurality of emitters where each of the plurality of emitters generates one of a plurality of optical beams in response to an electrical drive signal applied to a respective electrical input of each of the plurality of emitters. A first optical element projects each the plurality of optical beams generated by the surface-emitting array of emitters. A second optical element collimates the plurality of optical beams in a first dimension and diverges the plurality of optical beams in a second dimension such that the plurality of optical beams form at least one stripe patterns. A controller has electrical outputs, each of the electrical outputs is connected to a respective electrical input of each of the plurality of emitters. The controller generates electrical drive signals that produce a coded stripe pattern.
    Type: Grant
    Filed: October 7, 2016
    Date of Patent: April 17, 2018
    Assignee: Princeton Optronics, Inc.
    Inventors: Tong Chen, Chuni Ghosh, Laurence Watkins
  • Patent number: 9942530
    Abstract: The present disclosure provides a projection system and a light screen generating device thereof. The light screen generating device includes a movable carrier module, a first light-emitting module, and a second light-emitting module. The first light-emitting module includes a plurality of first light-emitting structures disposed on the movable carrier module. Each of the first light-emitting structures generates an invisible light screen, and the invisible light screens respectively generated by the first light-emitting structures are mated with each other to form a spliced invisible light screen for increasing light emission uniformity. The second light-emitting module includes a second light-emitting structure that is disposed on the movable carrier module and that generates a visible light screen parallel to and overlapping the spliced invisible light screen.
    Type: Grant
    Filed: May 5, 2017
    Date of Patent: April 10, 2018
    Assignees: EVEREST DISPLAY INC., SEAN & STEPHEN CORPORATION
    Inventors: Hei-Tai Hong, Yueh-Hong Shih, Chi-Jung Chen, Gang-Liang Wey, Hsin-Chin Chen
  • Patent number: 9921353
    Abstract: A light emitting device (1) comprising a light source (2) adapted for, in operation, emitting light (13) with a first spectral distribution, a first light guide (3) comprising a first light input surface (31) and a first light exit surface (32) arranged opposite to one another, and further comprising an end surface (35) extending perpendicular with respect to the first light input surface (31), and a second light guide (4) comprising a second light input surface (41) and a second light exit surface (42) extending perpendicular with respect to one another.
    Type: Grant
    Filed: June 5, 2014
    Date of Patent: March 20, 2018
    Assignee: PHILIPS LIGHTING HOLDING B.V.
    Inventors: Rifat Ata Mustafa Hikmet, Dirk Kornelis Gerhardus De Boer, Ties Van Bommel, Wilhelmina Maria Hardeman, Marcus Antonius Verschuuren
  • Patent number: 9658461
    Abstract: In various embodiments, wavelength beam combining laser systems incorporate fast-axis collimation lenses and slow-axis collimation lenses (either separately or as portions of a single hybrid lens) optically upstream of an optical rotation system to thereby reduce or minimize cross-talk in the combined output beam.
    Type: Grant
    Filed: June 10, 2015
    Date of Patent: May 23, 2017
    Assignee: TERADIODE, INC.
    Inventors: James Zambuto, Parviz Tayebati, Bien Chann, Michael Deutsch, Daqing Wang, Bryan Lochman
  • Patent number: 9218061
    Abstract: A method of audio and video synchronization may include capturing an image by each of a plurality of cameras. The images and audio may be compared with each other for synchronization.
    Type: Grant
    Filed: June 20, 2012
    Date of Patent: December 22, 2015
    Assignee: The Regents of the University of California
    Inventors: Aditi Majumder, Fadi Kurdahi, Kiarash Amiri, Magda El Zarki, Shih-Hsien Yang
  • Patent number: 9201294
    Abstract: 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: Grant
    Filed: December 5, 2013
    Date of Patent: December 1, 2015
    Assignee: ROBERT BOSCH GMBH
    Inventor: Gael Pilard
  • Publication number: 20150116603
    Abstract: A system and apparatus for dynamically distributing light are provided. The apparatus includes a source conduit configured to collect light from a light source and transmit the collected light for emission towards an optical switch. The optical switch is moveable between several discrete resting positions, each corresponding to a different one of a plurality of projector conduits. In each resting position, the optical switch directs light from the source conduit to a corresponding projector conduit. Each projector conduit receives the directed light from the optical switch and transmits the light to a corresponding one of a plurality of projectors. The optical switch is also configured to rest at each of the resting positions for respective portions of a given period of time, to regulate what amount of the light emitted by the source conduit during the period of time is received by each projector conduit.
    Type: Application
    Filed: October 31, 2013
    Publication date: April 30, 2015
    Applicant: CHRISTIE DIGITAL SYSTEMS CANADA INC.
    Inventor: Simon GUTHRIE
  • Patent number: 9010938
    Abstract: A projector according to an embodiment of the invention includes: an illumination device adapted to generate an illumination light; and a light modulation device adapted to modulate the illumination light in accordance with image information, wherein the illumination device includes a first illumination device including a fluorescence generation section adapted to generate a fluorescence from an excitation light generated by a first solid-state light source, and a second illumination device including a rod integrator optical system adapted to equalize an in-plane light intensity distribution of a colored light generated by a second solid-state light source.
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: April 21, 2015
    Assignee: Seiko Epson Corporation
    Inventor: Koichi Akiyama
  • Patent number: 8982265
    Abstract: The image projection and capture apparatus for projecting an image beam to display an image on a screen and sensing a sensing beam from the image on the screen, the image projection and capture apparatus includes a light source, a light valve, a projection lens, an image capture lens, a dichroic unit, and an image sensor. The light source provides an illumination beam. The light valve is capable of converting the illumination beam to the image beam. The projection lens has a first optical axis. The image capture lens has a second optical axis. The first optical axis and the second optical axis are collinear. The dichroic unit is disposed between the projection lens and the image capture lens. The image sensor is disposed on a light path of the sensing beam.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: March 17, 2015
    Assignee: Young Optics Inc.
    Inventors: Zhan-Yu Liu, Yi-Hsueh Chen, Hsin-Hung Lin, Ya-Ling Hsu, Chao-Shun Chen
  • Patent number: 8979274
    Abstract: A display device includes: a light source section; an optical modulator modulating light from the light source section based on a picture signal, to emit modulated light as picture light; a direct-view display section performing direct-view display based on the picture light; a projection optical system performing projection display on a projection screen based on the picture light; an optical member allowing the picture light from the optical modulator to travel toward at least one of the direct-view display section and the projection optical system; and a switching section performing control of traveling direction of the picture light on the optical member, to switch between two or more display modes which are selected, to include a two-way display mode, from a group consisting of a direct-view display mode, a projection display mode, and the two-way display mode.
    Type: Grant
    Filed: September 13, 2011
    Date of Patent: March 17, 2015
    Assignee: Sony Corporation
    Inventor: Takakiyo Kanazawa
  • Patent number: 8960915
    Abstract: Optical element 10 according to the present invention comprises light guide body 11, surface plasmon excitation means 14 that is provided on the interface with light guide body 11 and that allows surface plasmon to be excited by a specific polarization component of light whose polarization direction is orthogonal to the first direction y in the surface of light guide body 11, from among light entering from light guide body 11, and a light generation means that includes metal layer 12 and cover layer 13, and that generates light having the same polarization component as the specific polarization component of light, from surface plasmon produced in the interface between metal layer 12 and cover layer 13 in response to surface plasmon excited by the specific polarization component in surface plasmon excitation means 14.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: February 24, 2015
    Assignee: NEC Corporation
    Inventors: Shin Tominaga, Masao Imai, Goroh Saitoh, Masanao Natsumeda
  • Patent number: 8955977
    Abstract: A projection-type image display apparatus includes a color separation element including a color separation surface, a light modulation element configured to receive the light divided by the color separation element, a polarizing beam splitter disposed between the color separation element and a projection optical system to separate a light path of a light modulated by the light modulation element according to a polarization direction and guide the resulting light to the projection optical system, and a phase difference plate disposed between the color separation element and the light modulation element. An optic axis of the phase difference plate and the normal of the color separation surface are substantially parallel or perpendicular to each other, in a cross section parallel to a normal of the color separation surface and a normal of the light modulation element.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: February 17, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yutaka Yamaguchi, Takehito Kawasumi
  • Patent number: 8950874
    Abstract: A projection optical system for use in an image display apparatus having an illumination optical system applying light from a light source, and an image display device receiving the light from the illumination optical system to form a projection image includes a projector lens composed of plural lenses, a first mirror, and a second mirror formed of a concave mirror. The projection optical system is configured to project the projection image onto a projection surface. A projection luminous flux passing through the projector lens to be incident on the first mirror is a luminous flux exhibiting divergence. The projection luminous flux reflected off the second mirror after having reflected off the first mirror is converged once, and the once converged projection luminous flux is projected onto the projection surface. A lens surface of a lens located closest to the first mirror among the lenses of the projector lens is convex.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: February 10, 2015
    Assignee: Ricoh Company, Ltd.
    Inventor: Hibiki Tatsuno
  • Patent number: 8902485
    Abstract: A contrast enhancing system is provided comprising: a digital micromirror device (DMD); a light source; a first integrator that receives light from the light source, comprising lateral long and short dimensions, the lateral short dimension at a non-zero angle to the DMD tilt axis; a second integrator that receives and shapes light from the first integrator; a telecentric lens about midway between the integrators that generates fast and slow f-number directions of the light in angle space, respectively corresponding to the lateral long and short dimensions of the first integrator, the slow f-number direction correspondingly at the non-zero angle to the DMD tilt axis, thereby increasing dead-zones between adjacent ones of a DMD illumination path and DMD reflection paths for each of the on, flat and off-state positions; and, at least one optical component that focuses the light along the illumination path from the second integrator onto the DMD.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: December 2, 2014
    Assignee: Christie Digital Systems USA, Inc.
    Inventors: Mark Bird, John Domm
  • Patent number: 8894213
    Abstract: A solid-state light source unit emits excitation light. Fluorescent material layer is formed on each side of a glass substrate of a fluorescent plate so as to interpose a reflective film therebetween. The first optical system optically guides, to a rod integrator, red and blue LED light, and green fluorescence that is generated by excitation occurring when blue laser light emitted from the solid-state light source unit is applied to the fluorescent material layer on one surface of the fluorescent plate, and that is emitted in the ?X direction. The second optical system optically guides, to the rod integrator, red and blue LED light, and green fluorescence that is generated by excitation occurring when blue laser light emitted from the solid-state light source unit is applied to the fluorescent material layer on the other surface of the fluorescent plate, and that is emitted in the +X direction.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: November 25, 2014
    Assignee: Panasonic Corporation
    Inventors: Hiroki Sugiyama, Hiroshi Kitano
  • Patent number: 8888291
    Abstract: A polarization optical apparatus including a reflection-type polarization element for transmitting a predetermined polarization component light. A slidably supported reflection-type optical modulation element is held by a holding member that includes a sliding support surface for slidably supporting the reflection-type polarization element. The reflection-type polarization element is urged toward the sliding support surface while the reflection-type polarization element is enabled to be slid along the sliding support surface.
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: November 18, 2014
    Assignee: Sony Corporation
    Inventor: Yoshihisa Aikoh
  • Patent number: 8888290
    Abstract: A polarization beam splitter includes at least six prisms assembled together to form a single solid components. At least one diagonal interface is formed by a combination of two or more prism surfaces. The solid polarization beam splitter component has at least four light entrance/exit surfaces with at least one of the light entrance/exit surfaces including a step. At least one of the prisms has a non-triangular cross-sectional shape. At least one surface of a prism that forms a portion of the diagonal interface has a polarization beam splitting material disposed thereon resulting in a diagonal interface that includes a polarization beam splitting material. The polarization beam splitter can be incorporated into various image projection apparatus including 2D, multiple image, and 3D projection apparatuses.
    Type: Grant
    Filed: April 11, 2012
    Date of Patent: November 18, 2014
    Assignee: Hong Kong Applied Science and Technology Research Institute Company Limited
    Inventor: Ying Liu
  • Patent number: 8872985
    Abstract: Some embodiments provide for a modular video projector system having a light engine module and an optical engine module. The light engine module can provide narrow-band laser light to the optical engine module which modulates the laser light according to video signals received from a video processing engine. Some embodiments provide for an optical engine module having a sub-pixel generator configured to display video or images at a resolution of at least four times greater than a resolution of modulating elements within the optical engine module. Systems and methods for reducing speckle are presented in conjunction with the modular video projector system.
    Type: Grant
    Filed: April 11, 2013
    Date of Patent: October 28, 2014
    Assignee: RED.COM, Inc.
    Inventors: James H. Jannard, Stuart J. English, Gregory Alan Prior, Edmund Sandberg, Ryan Newham
  • Patent number: 8870383
    Abstract: An optical member includes: a total reflection mirror including a reflection surface for reflecting a laser beam; a filter including a partially transmissive surface for passing therethrough a part of the laser beam and reflecting the remaining part of the laser beam, the partially transmissive surface being located so as to be opposed to the reflection surface ; and a diffraction grating into which the laser beam enters, for diffracting the incident laser beam to enter the total reflection mirror or the partially transmissive filter.
    Type: Grant
    Filed: April 2, 2012
    Date of Patent: October 28, 2014
    Assignee: Panasonic Corporation
    Inventor: Tsuguhiro Korenaga
  • Patent number: 8794770
    Abstract: A projection display includes at least one light source, at least one reflective image generator configured to represent frames in a two-dimensional distribution of subareas of same, a projection optics arrangement having a two-dimensional arrangement of optical projection elements and being configured to image an associated subarea of the at least one image generator onto an image plane in each case, so that images of the frames superimpose within the image plane to form an overall picture, and at least one beam splitter arranged within an optical path between the at least one reflective image generator and the two-dimensional arrangement of optical projection elements, on the one hand, and the optical path between the at least one light source and the at least one reflective image generator, on the other hand.
    Type: Grant
    Filed: March 18, 2011
    Date of Patent: August 5, 2014
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Marcel Sieler, Peter Schreiber, Erik Foerster
  • Publication number: 20140211171
    Abstract: The invention provides a projection apparatus having an image source, a projection lens, and a beam-splitting module. The image source provides an image beam, and the image beam includes a first sub image beam and at least one second sub image beam. The projection lens is disposed on a transmission path of the image beam. The beam-splitting module projects the first sub image beam passing through the beam-splitting module onto a first imaging plane, and projects the second sub image beam reflected by the beam-splitting module onto at least one second imaging plane. The first imaging plane is not coplanar with the at least one second imaging plane. The projection lens is disposed on the transmission path of the image beam between the beam-splitting module and the image source.
    Type: Application
    Filed: December 30, 2013
    Publication date: July 31, 2014
    Applicant: YOUNG OPTICS INC.
    Inventors: Wei-Hao Huang, Chao-Shun Chen, Haw-Woei Pan
  • Patent number: 8783878
    Abstract: An optical system (100) comprises a coherent light source (101) and optical elements for directing light from the source to a target (1001). The optical elements include at least one diffusing element (141, 161) arranged to reduce a coherence volume of light from the source and a variable optical property element (151). A control system (1021) controls the variable optical property element such that different speckle patterns are formed over time at the target (1001) with a temporal frequency greater than a temporal resolution of an illumination sensor or an eye (1011) of an observer so that speckle contrast ratio in the observed illumination is reduced. The variable optical property element (151) may be a deformable mirror with a vibrating thin plate or film.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: July 22, 2014
    Assignee: Optyka Limited
    Inventors: Fergal Patrick Shevlin, Omar Sqalli, Nicolas Descharmes
  • Publication number: 20140198302
    Abstract: An image rearranging lens and a projection apparatus are provided. The image rearranging lens is used to rearrange a plurality of sub images provided by an image source and arranged along an arranging direction. The image rearranging lens includes a plurality of lens groups arranged along the arranging direction. Each of the sub images is imaged on a corresponding lens group. Optical axes of the lens groups are not aligned to each other along the arranging direction. The optical axis of each of the lens groups and the optical axis of the neighboring lens groups have an offset along a direction perpendicular to the arranging direction.
    Type: Application
    Filed: December 25, 2013
    Publication date: July 17, 2014
    Applicant: YOUNG OPTICS INC.
    Inventors: Chih-Hsien Tsai, Wei-Hung Tsai, Hung-Chih Chou
  • Patent number: 8746891
    Abstract: An illumination device a first light source array a first light source. The first light source can generate a first light beam having a first spectral distribution. The first light beam can propagate primarily in a first direction along an optical axis. A second light source array can be included, having a second light source that generates a second light beam having a second spectral distribution. Also included can be a first dichroic reflector positioned partially in the first and the second light beams. The first dichroic reflector can transmit a part of the first and the second light beams. The second light beam can propagate in a second direction towards a part of the first light source array and opposite the first direction. Further, a part of the second light beam can propagate primarily in first direction after being reflected by the first dichroic reflector.
    Type: Grant
    Filed: April 19, 2010
    Date of Patent: June 10, 2014
    Assignee: Martin Professional A/S
    Inventor: Dennis Thykjær Jørgensen
  • Patent number: 8746890
    Abstract: The polarization beam splitting element includes a one-dimensional grating structure having a grating period smaller than a wavelength of an entering beam and including a metal grating portion, and two light-transmissive members each having a refractive index higher than that of air. The one-dimensional grating structure is disposed between the two light-transmissive members. The grating period of the one-dimensional grating structure is 120 nm or less, a thickness of the one-dimensional grating structure is 100 nm or less and an inter-grating portion of the one-dimensional grating structure is formed as a vacuum space or formed of air or a dielectric material. The grating period ? [nm], a filling factor FF that is a ratio w/? of a width w [nm] of the grating portion to the grating period, a refractive index na of the inter-grating portion and a wavelength ?g of 550 [nm] satisfy (1.4na?2.9)?/?g?0.57na+1.32?FF?(1.4na?2.9)?/?g?0.57na+1.39 and 0.152np?1.375(?/?g)+0.5?FF?0.152np?1.375(?/?g)+0.6.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: June 10, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Rie Ishimatsu
  • Patent number: 8740388
    Abstract: A light source apparatus includes: a light source that emits blue component light; a polarization adjuster that adjusts a polarization state of the blue component light emitted from the light source; a separation optical element that separates the blue component light emitted from the light source into a first optical path and a second optical path according to the polarization state adjusted by the polarization adjuster, the first optical path being for using the blue component light as excitation light, the second optical path being for using the blue component light as reference image light; a luminous body provided on the first optical path and that emits reference image light in response to the excitation light; and a combine optical element that combines the first optical path and the second optical path into a single optical path.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: June 3, 2014
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Michihiro Okuda, Shinya Matsumoto
  • Patent number: 8736775
    Abstract: A cooling device for use in an electronic apparatus is capable of achieving a sufficient cooling capability with an effective replacement method in a narrow flow path. The cooling device for the electronic apparatus, which includes a plurality of members juxtaposed such that surfaces thereof confront each other, at least one of the members including a heat radiating surface, includes a first air-cooling member which includes a first outlet port that creates a first air stream, and a second air-cooling member which includes a second outlet port that creates a second air stream to flow in a direction different from the first air stream. The first and second outlet ports have different opening widths, respectively.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: May 27, 2014
    Assignee: NEC Display Solutions, Ltd.
    Inventor: Motoyasu Utsunomiya
  • Patent number: 8721089
    Abstract: The image projection apparatus is disclosed to which plural interchangeable optical units are selectively attachable. The apparatus includes a shift mechanism moving an attached optical unit, which is one of the plural interchangeable optical units that is attached to the apparatus, with respect to a light modulation element in a direction orthogonal to an optical axis, an actuator driving the shift mechanism, and a controller controlling drive of the actuator using a control parameter for moving the attached optical unit by a specific movement amount via the shift mechanism. The controller acquires information on at least one of a weight and an optical characteristic of the attached optical unit from a memory provided in one of the apparatus and the attached optical unit, and to change the control parameter using the acquired information.
    Type: Grant
    Filed: February 22, 2012
    Date of Patent: May 13, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Junichi Hatakeyama, Azusa Sugawara
  • Patent number: 8721087
    Abstract: A light source device includes: light sources arranged in a plane; collimator lenses disposed in the vicinities of corresponding each of the light sources, each of the collimator lenses collimating a light beam emitted from the corresponding light source, and a holder that holds the light sources and the collimator lenses. The holder holds the light sources and the collimator lenses so that optical axes of the collimator lenses are respectively shifted parallel to optical axes of the light sources by shift lengths that are set so that light beams emitted from the light sources via the collimator lenses are focused on a certain region of an illumination subject body. The light beams emitted from the light sources are refracted by the collimator lenses and focused on the certain region.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: May 13, 2014
    Assignee: Casio Computer Co., Ltd.
    Inventor: Hideyuki Kurosaki
  • Patent number: 8714748
    Abstract: A light source system for a projection device and a projection device comprising the same are provided. The light source system comprises an optical component assembly and a first light source module. The first light source module has a first light emitting diode (LED) and a first reflection cover. The first LED is configured to generate beams. The first reflection cover has a curved surface to reflect and collect the beams from the first LED into the optical component assembly.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: May 6, 2014
    Assignee: Delta Electronics, Inc.
    Inventor: Hung-Ying Lin
  • Publication number: 20140118701
    Abstract: A projection apparatus for projecting a first image and a second image is disclosed. The projection apparatus has a casing, a light source module providing an illumination beam, a light valve device, a first prism, a second prism, a third prism, a fourth prism, a first projection lens, and a second projection lens. The illumination beam enters the first prism, the second prism, the third prism, the fourth prism, and the light valve device. The illumination beam is reflected and converted into a first image beam and a second image beam. The first image beam enters the first prism and is totally reflected to the first projection lens to form the first image. The second image beam enters the third prism and is totally reflected to the second projection lens to form the second image.
    Type: Application
    Filed: October 29, 2012
    Publication date: May 1, 2014
    Inventors: Kuei-Yu Lee, Chao-Shun Chen, Haw-Woei Pan
  • Patent number: 8708500
    Abstract: A projection device capable of effectively performing the light utilization is disclosed, particularly comprising polarized beam components and reflective components regarded for controlling polarizing of light, reducing light missing during light transferring from a light source to a projection lens set, increase light utilization efficiency, wherein the polarizing beam components are regarded for separating the light into two orthogonal polarization waves; the present invention further comprises two modulated diaphragms regarded for controlling the strength of said two orthogonal polarization waves, equaling brightness of the polarization waves at final vision, keeping a good quality in final vision.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: April 29, 2014
    Assignee: National Tsing Hua University
    Inventors: Cheng-Huan Chen, Sheng-Hsun Hsieh
  • Publication number: 20140104577
    Abstract: Provided is a display apparatus including: a first display unit including a first screen on which a first image is imaged and that is capable of displaying the first image in a first direction and a first optical member capable of reflecting and displaying the first image in at least one second direction crossing the first direction; a second display unit that includes a second screen on which a second image is imaged and that is capable of displaying the second image in the second direction; and a light source configured to project first image light forming the first image onto the first screen and project second image light forming the second image onto the second screen.
    Type: Application
    Filed: October 4, 2013
    Publication date: April 17, 2014
    Applicant: Sony Corporation
    Inventor: Kazumasa Kaneda
  • Patent number: 8693767
    Abstract: Image data, in particular a three-dimensional image master, is generated for stereoscopic playback via an auto-stereoscopic playback device. Image data are generated for playback that evokes a three-dimensional visual impression in a human observer by: receiving and/or importing 2D image data of an original view, deriving a plurality of further partial views that represent the information shown in the original view from different viewing angles. For each pixel of the 2D image data of the original view, color values are determined and a control value dependent on the color values is automatically assigned to each of the pixels.
    Type: Grant
    Filed: August 27, 2010
    Date of Patent: April 8, 2014
    Assignee: Natural View Systems GmbH
    Inventor: Michael Steglich
  • Patent number: 8690341
    Abstract: An image display device having an RGB illuminating module that includes a diffractive beam combiner. The diffractive beam combiner includes a first light source arranged to provide a first light beam having red color and a second light source arranged to provide a second light beam having green color. A centerline of the first light beam and a centerline of the second light beam are arranged to intersect at an intersection point. A diffractive output grating is located in the vicinity of the intersection point. The diffractive output grating is arranged to form an output light beam by diffracting light of the first light beam and light of the second light beam substantially in the same direction.
    Type: Grant
    Filed: February 18, 2010
    Date of Patent: April 8, 2014
    Assignee: EpiCrystals Oy
    Inventor: Tuomas Vallius
  • Patent number: 8681224
    Abstract: The present application relates to a high precision method for calibrating and removing distortion from a lens, and more particularly, a method for calibrating and removing distortion by arranging sensor readings to compensate for its presence and simultaneously optimize the resulting image magnification for best image quality.
    Type: Grant
    Filed: June 26, 2008
    Date of Patent: March 25, 2014
    Assignee: Dublin City University
    Inventors: John Mallon, Paul F. Whelan
  • 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: 8651669
    Abstract: A projection apparatus that provides flicker reduction according to the cause of flicker, to thereby properly reduce flicker without unnecessarily bringing about characteristic degradation is disclosed. Light for projecting a projection image onto a projection surface is output from a light source, and separated into light beams of a plurality of colors. Images corresponding to the light beams of the plurality of colors are formed on display units. The light beams of the plurality of colors having passed through the display units are synthesized and projected onto the projection surface. Fluctuations in the light quantity of the light beams of the plurality of colors having passed through the display units and yet to be input to the color synthesis unit are detected. Detection results are analyzed, and it is determined whether flicker caused by the display units or flicker caused by the light source is occurring in the projection image.
    Type: Grant
    Filed: May 23, 2011
    Date of Patent: February 18, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Masaya Yagi
  • Patent number: 8636365
    Abstract: A projection display device includes first to third display panels configured to realize first to third color images and a fourth display panel configured to realize a white image. The first to third color images and the white image may be combined and projected.
    Type: Grant
    Filed: March 27, 2009
    Date of Patent: January 28, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chan-Young Park, Hye-Dong Kim
  • Publication number: 20140022510
    Abstract: An image engine and a projection system with two discrete format channels are described. The engine comprises a spatial light modulating system in each channel and a combining layer. A specific arrangement of the modulators of the two spatial light modulating systems relative to the combining layer makes it possible that one modulating system generates a landscape format image while the second modulating system generates a portrait format image in a common output path. In the projection system, a control logic addresses either the landscape channel or the portrait format channel or both channels, depending either on the format of the incoming image data, or on external controls.
    Type: Application
    Filed: July 18, 2012
    Publication date: January 23, 2014
    Inventors: Bernhard Rudolf Bausenwein, Max Mayer
  • Patent number: 8608317
    Abstract: According to an embodiment of the present invention a projection facility for projecting image contents onto an inside wall in an open cabin of a transport means, with which any given image contents can be projected onto a curved inside wall in a large-scale manner. The projection facility may comprise, apart from several projectors, several mirrors for deflecting the image contents. This allows image quality to be improved.
    Type: Grant
    Filed: May 9, 2008
    Date of Patent: December 17, 2013
    Assignee: Airbus S.A.S.
    Inventors: Ulrich Babst, Torsten Jaunich, Daniel Dreyer, Hans Lobentanzer, Marc S. Velten, Holger Schmidt
  • Patent number: RE45504
    Abstract: Micro-electromechanical display device (“MDD”)-based multimedia projectors (90, 120) of this invention employ an arc lamp (32), a color modulator (42), and anamorphic illumination systems (94, 121) for optimally illuminating a MDD (50, 76) to improve projected image brightness. MDDs employ off-axis illumination wherein incident and reflected light bundles are angularly separated about a hinge axis (78, 110) and the MDD is illuminated by the anamorphic illumination systems of this invention having a slow f/# parallel to the hinge axis and a faster f/# perpendicular to the hinge axis. The resulting anamorphic light bundles (86, 88, 112, 114) illuminate and reflect more light into and off the MDD and through a fast f/# projection lens.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: May 5, 2015
    Assignee: Seiko Epson Corporation
    Inventor: Mark Peterson