Rear Projection Screen Patents (Class 359/456)
  • Patent number: 11010003
    Abstract: A touch sensor module includes a touch sensor layer including sensing electrodes and traces extending from the sensing electrodes, an optical layer on the touch sensor layer to cover the sensing electrodes, a circuit connection structure spaced apart from the optical layer and electrically connected to the traces on an end portion of the touch senor layer, and a colored resin pattern filling a gap between the optical layer and the circuit connection structure. An optical disturbance at the gap is prevented by the colored resin pattern.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: May 18, 2021
    Assignee: DONGWOO FINE-CHEM CO., LTD.
    Inventors: Chang Jun Maeng, Heon Kim, Hyun Min Shin
  • Patent number: 10956700
    Abstract: The disclosure relates to a display device including: an organic light-emitting diode display panel, a fingerprint recognition layer located below the organic light-emitting diode display panel, and a light filtering layer located between the organic light-emitting diode display panel and the fingerprint recognition layer, where the light filtering layer is configured to filter out light rays with an incidence angle greater than a filter angle among light rays carrying fingerprint line information, and to transmit light rays with an incidence angle smaller than or equal to the filter angle, where the incidence angle is the angle between the light rays carrying fingerprint line information, and the direction perpendicular to the fingerprint recognition layer.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: March 23, 2021
    Assignees: Beijing BOE Display Tchnology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Ying Zhao, Shipei Li, Qingping Yin, Tao Li, Huili Wu, Chunming Cui, Zihao Zhao, Jie Jin, Weimeng Zhang
  • Patent number: 10852181
    Abstract: An optical light diffusing system is provided that includes an optical diffuser that coverts incoming light into diffused light. To prevents mixing light from undesired directions in the diffuser, light form undesired direction is baffled before it reaches the diffuser. Baffling is performed with an array of micro lenses located in the optical path to the diffuser. An array of apertures is located between the array of micro lenses and the optical diffuser. Each micro lens is aligned with a corresponding aperture. The apertures are located substantially in a focal surface of the array of micro lenses. Optical baffles located between the array of micro lenses and the array of apertures, separates optically transparent volumes between different ones of the micro lenses and their corresponding apertures.
    Type: Grant
    Filed: March 6, 2017
    Date of Patent: December 1, 2020
    Assignee: Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO
    Inventor: Gerard Christiaan Jurjen Otter
  • Patent number: 10845697
    Abstract: A transparent film is used with a projector which emits a projected light. The transparent film includes a transparent substrate; a light-scattering layer disposed at an upstream position of the transparent substrate with respect to the projected light, and including a plurality of microstructures configured to scatter the projected light; and a light-blocking layer disposed at an upstream position of the light-scattering layer with respect to the projected light, and including a plurality of separate light-blocking units, which are configured to partially block the projected light and partially allow the projected light to reach the light-scattering layer.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: November 24, 2020
    Assignee: BJ TEK CORPORATION
    Inventors: He-Yuan Jiang, Hsiu-Cheng Chang, Ching-Han Chang
  • Patent number: 10347862
    Abstract: An organic EL display device (1) includes: a plurality of organic EL elements (30) each including a lower electrode (31), an EL layer (32), and an upper portion (33); and a sealing layer (40) covering the plurality of organic EL elements (30), the organic EL display device (1) having, in a non-light-emitting portion (5) of a display region (2), at least one contact hole (34) extending through at least the upper electrode (33) and the EL layer (32) and allowing the sealing layer (40) to be in contact with a surface of a layer below the organic EL layer (32).
    Type: Grant
    Filed: April 5, 2016
    Date of Patent: July 9, 2019
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Tohru Sonoda, Takeshi Hirase, Tetsuya Okamoto, Tohru Senoo, Mamoru Ishida
  • Patent number: 10317765
    Abstract: A method for removing a material from a surface includes passing a laser through a lens such that the laser impinges on the material. The surface from which the material is removed has an array of artifacts thereon with a spacing between the artifacts and a pitch between lines of the artifacts. At least the spacing between the artifacts is varied.
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: June 11, 2019
    Assignee: GENTEX CORPORATION
    Inventors: Henry A. Luten, Donald L. Bareman, Thomas J. Scott, Kurtis L. Geerlings, William L. Tonar, Niels A. Olesen
  • Patent number: 10288484
    Abstract: A metrology system is used for measuring a spectral feature of a pulsed light beam. The metrology system includes: a beam homogenizer in the path of the pulsed light beam, the beam homogenizer having an array of wavefront modification cells, with each cell having a surface area that matches a size of at least one of the spatial modes of the light beam; an optical frequency separation apparatus in the path of the pulsed light beam exiting the beam homogenizer, wherein the optical frequency separation apparatus is configured to interact with the pulsed light beam and to output a plurality of spatial components that correspond to the spectral components of the pulsed light beam; and at least one sensor that receives and senses the output spatial components.
    Type: Grant
    Filed: June 11, 2018
    Date of Patent: May 14, 2019
    Assignee: Cymer, LLC
    Inventors: Zhongquan Zhao, Brian Edward King, Thomas Patrick Duffey
  • Patent number: 10288232
    Abstract: The present disclosure provides a backlight module, a method for operating the same and a display device including the backlight module. The backlight module comprises a light guide plate, a collimated light source and a shading plate between the light guide plate and the collimated light source. The light guide plate comprises a transparent main body and a plurality of diffusion dots formed on the transparent main body. The shading plate comprises a plurality of shading regions corresponding to the plurality of diffusion dots of the light guide plate. The collimated light source generates collimated light vertically irradiating on the shading plate.
    Type: Grant
    Filed: May 24, 2017
    Date of Patent: May 14, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xin Wang, Jianhua Du
  • Patent number: 10088609
    Abstract: There is provided a light diffuser which can alleviate glare of light emitted from a light source while preventing a decrease in brightness of the emitted light despite the presence of the light diffuser. The light diffuser, contains a thermoplastic resin and transparent particles added thereto. The light diffuser has a total light transmittance in a range of 50 to 85%, and a wavelength selectivity in a rectilinear light ratio in a range of 1.5 to 5.0, as obtained by following formulas (1)-(3): (wavelength selectivity in rectilinear light ratio)=(rectilinear light ratio of 550-nm light)/(rectilinear light ratio of 450-nm light)??(1) (rectilinear light ratio of 550-nm light)=(rectilinear light transmittance for 550-nm light)/(total transmittance for 550-nm light)??(2) (rectilinear light ratio of 450-nm light)=(rectilinear light transmittance for 450-nm light)/(total transmittance for 450-nm light)??(3).
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: October 2, 2018
    Assignee: SEKISUI PLASTICS CO., LTD.
    Inventors: Fumitaka Ishimori, Kazuki Machida
  • Patent number: 10050235
    Abstract: An optical film includes: a high refractive index pattern layer including a material having a refractive index greater than about 1, where a plurality of grooves, each having a curved groove surface and a depth greater than a width thereof, is defined on a first surface of the high refractive index pattern layer, the plurality of grooves defines a pattern, the plurality of grooves are two-dimensionally arranged in a first direction and a second direction, and a first distance between adjacent grooves in the first direction and a second distance between adjacent grooves in the second direction are different from each other; and a low refractive index pattern layer including a material having a refractive index less than the refractive index of the high refractive index pattern layer and further including a plurality of fillers which fills the plurality of grooves, respectively.
    Type: Grant
    Filed: October 9, 2014
    Date of Patent: August 14, 2018
    Assignees: SAMSUNG ELECTRONICS CO., LTD, CORNING PRECISION MATERIALS CO., LTD., CHEIL INDUSTRIES INC.
    Inventors: Youmin Shin, Hyunmin Kim, Hongshik Shim, Young Oh, Chulho Jeong, Eunyoung Cho
  • Patent number: 10050234
    Abstract: An optical film includes a high refractive index pattern layer including a material having a refractive index greater than about 1, wherein a groove pattern defined by grooves, each of which has a curved groove surface and a depth greater than a width, is defined on a first surface of the high refractive index pattern, the grooves are two-dimensionally arranged in a first direction and a second direction, and a cross-sectional shape of each of the grooves has an anisotropic shape, in which a length in a first axial direction and a length in a second axial direction, which is perpendicular to the first axial direction, are different from each other, and a low refractive index pattern layer including a material having a refractive less than the refractive index of the high refractive index pattern layer and further including fillers corresponding to the grooves.
    Type: Grant
    Filed: October 9, 2014
    Date of Patent: August 14, 2018
    Assignees: SAMSUNG ELECTRONICS CO., LTD, CORNING PRECISION MATERIALS CO., LTD., CHEIL INDUSTRIES INC.
    Inventors: Hyunmin Kim, Youmin Shin, Hongshik Shim, Young Oh, Chulho Jeong, Eunyoung Cho
  • Patent number: 10018903
    Abstract: A stereoscopic device light recycling device and method of construction thereof is provided. A beam splitter is constructed of substantially orthogonally polarizing material on which image light is received. At least one support member is affixed to the beam splitter and is configured to hold the beam splitter at an angle. A phase shifting optic includes a reflective surface coated by a phase shifting film and is positioned at an angle non-perpendicular to at least a portion of the image light from the beam splitter. The angle of the beam splitter is dependent on the angle of the phase shifting optic.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: July 10, 2018
    Assignee: Lightspeed Design, Inc.
    Inventors: Chris Ward, Robert Mueller, Kirk Melby
  • Patent number: 10012544
    Abstract: A metrology system is used for measuring a spectral feature of a pulsed light beam. The metrology system includes: a beam homogenizer in the path of the pulsed light beam, the beam homogenizer having an array of wavefront modification cells, with each cell having a surface area that matches a size of at least one of the spatial modes of the light beam; an optical frequency separation apparatus in the path of the pulsed light beam exiting the beam homogenizer, wherein the optical frequency separation apparatus is configured to interact with the pulsed light beam and to output a plurality of spatial components that correspond to the spectral components of the pulsed light beam; and at least one sensor that receives and senses the output spatial components.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: July 3, 2018
    Assignee: Cymer, LLC
    Inventors: Zhongquan Zhao, Brian Edward King, Thomas Patrick Duffey
  • Patent number: 9829782
    Abstract: An image light projection screen has a plurality of aperiodic lens array units on a main surface. The aperiodic lens array units are arrayed two-dimensionally regularly and without any gap at least in an image display region. Each aperiodic lens array unit includes at least four apexes of micro-lenses each having a curved surface shape and arranged without any gap and non-periodically, and has symmetry keeping continuity of the curved surface shapes of the micro-lenses located in a boundary portion.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: November 28, 2017
    Assignee: ASAHI GLASS COMPANY, LIMITED
    Inventors: Atsushi Koyanagi, Takuji Nomura, Koji Miyasaka
  • Patent number: 9658465
    Abstract: This projector includes a laser light generation portion, a projection portion scanning laser light, and a projection screen. The projection screen includes a lens member including a plurality of lens portions splitting the laser light and a diffusion member arranged to be opposed to the lens member, having an incident surface and a diffusion portion. The diffusion portion of the diffusion member is arranged at a position apart by a distance larger than the focal length of the lens member along an optical axis with respect to the optical principal surface of the lens member.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: May 23, 2017
    Assignee: Funai Electric Co., Ltd.
    Inventors: Hiroki Matsubara, Kenji Nagashima
  • Patent number: 9557597
    Abstract: In a liquid crystal display device including a light control film utilizing total reflection, a liquid crystal panel, and a directional backlight, the light control film includes a transparent base material, a light blocking layer, and a light diffusing portion. The light diffusing portion has a light output end surface on side closer to the transparent base material and a light input end surface on side opposite to the transparent base material, the light input end surface having a larger area than the light output end surface. A film thickness of the light diffusing portion is larger than a thickness of the light blocking layer. A material having a smaller refractive index than the light diffusing portion is present in a cavity defined by the light diffusing portion, and the film anisotropically diffuses light.
    Type: Grant
    Filed: December 25, 2012
    Date of Patent: January 31, 2017
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Toru Kanno, Emi Yamamoto, Tsuyoshi Maeda
  • Patent number: 9494825
    Abstract: A condensing sheet includes a light output unit that has a plurality of lenses, and a light input unit that faces the light output unit and includes a light penetration unit and a light reflection unit. The light reflect ion unit has a structure including a recess sinking toward the light output unit and a reflector received in the recess.
    Type: Grant
    Filed: September 6, 2007
    Date of Patent: November 15, 2016
    Assignee: LG Chem, Ltd.
    Inventors: Hang-Suk Choi, Hoon-Seon Lee, Pyung-Gun Jun, Won-Bong Kwak, Dong-Cheol Choi, Jin-Kyu Kim
  • Patent number: 9411898
    Abstract: Generating and storing, for a multitude of polygonal areas, spatial coordinates of a multitude of piecewise-linear spatial boundary segments. The polygonal boundary of each area comprises boundary segments; each boundary segment forms a portion of the polygonal boundary of at most two adjacent spatial areas. Can further include one or both of (i) an indicator, for each spatial boundary segment, of the at most two corresponding adjacent spatial areas that are separated by that boundary segment or (ii) an indicator, for each spatial area, of one or more boundary segments that together form the entire polygonal boundary of that spatial area. The electronic indicia of the second dataset can be used, inter alia, (i) to determine in which of a multitude of at least partly contiguous spatial areas is located a given spatial point, or (ii) to graphically render the polygonal borders of the areas.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: August 9, 2016
    Assignee: MOONSHADOW MOBILE, INC.
    Inventor: Roy W. Ward
  • Patent number: 9326688
    Abstract: The present invention employs an object information acquiring apparatus that includes a light source, a holding plate configured to hold an object, a supporting unit configured to support the holding plate, and a probe configured to receive, via the holding plate, an acoustic wave generated from the object on which light is irradiated from the light source. A light reflecting member is provided between the supporting unit and the holding plate.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: May 3, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Hiroshi Yamamoto, Yukio Furukawa, Hiroshi Nishihara
  • Patent number: 9250508
    Abstract: A rear projection screen includes an array of pin-hole apertures to pass display light incident from a first side of the rear projection screen through to a viewing side of the rear projection screen opposite the first side. An array of concentrator structures surrounds the pin-hole apertures and defines concentrating optical pathways. The concentrating optical pathways each have an input aperture for collecting the display light and an output defined by a corresponding one of the pin-hole apertures to emit the display light. The input apertures are larger than the pin-hole apertures.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: February 2, 2016
    Assignee: Google Inc.
    Inventors: Belle Fu, Serge J. Bierhuizen, Mary Lou Jepsen, Andrei S. Kazmierski, Adam E. Norton, Nicholas C. Loomis, Philip E. Watson
  • Patent number: 9013790
    Abstract: A projection screen includes a transparent substrate having a front side and a backside, a dark film disposed across the front side of the transparent substrate, an array of holes disposed through the dark film, a diffusing layer disposed between the transparent substrate and the dark film, and an array of lenses disposed across the backside of the transparent substrate. The array of lenses are aligned to focus display light incident through the array of lenses towards the array of holes and the diffusing layer diffuses the display light for emission out the array of holes as diffuse display light.
    Type: Grant
    Filed: June 12, 2014
    Date of Patent: April 21, 2015
    Assignee: Google Inc.
    Inventors: Andrei S. Kazmierski, Mary Lou Jepsen, Belle Fu
  • Patent number: 8988774
    Abstract: This projector includes a laser light generation portion, a projection portion scanning laser light, and a projection screen. The projection screen includes a lens member including a plurality of lens portions splitting the laser light and a diffusion member arranged to be opposed to the lens member, having an incident surface and a diffusion portion. The diffusion portion of the diffusion member is arranged at a position apart by a distance larger than the focal length of the lens member along an optical axis with respect to the optical principal surface of the lens member.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: March 24, 2015
    Assignee: Funai Electric Co., Ltd.
    Inventors: Hiroki Matsubara, Kenji Nagashima
  • Patent number: 8643792
    Abstract: A rear projection imaging system with an image warping distortion correction system using a camera and processing unit to generate a warping map that corrects for image distortion. The warping map is generated in an iterative process by displaying a known pattern on a viewing screen and, through the use of a camera, having a microprocessor determine the location and shape of the pattern on the screen. The microprocessor then compares the displayed image to the original reference image, calculates the distortion effects present in the projection optics, and generates a warping map.
    Type: Grant
    Filed: July 24, 2012
    Date of Patent: February 4, 2014
    Assignee: Fakespace Labs, Inc.
    Inventors: Ian E. McDowall, Mark T. Bolas
  • Patent number: 8540375
    Abstract: A system and method for correcting optical distortion in an off-axis system is provided. The offset between the center of a display plane and the optical axis of the projection lens system is configured such that the offset is greater than half the vertical dimension of the display plane. In this manner, the distortion, such as a pincushion-type or barrel-type of distortion, is not symmetrical about the horizontal axis. In this scenario, the display plane, the projection lens system, a folding mirror, and/or the spatial light modulator may be tilted such that a keystone effect is induced. This keystone effect may be used to offset the distortion, particularly the pincushion-type or barrel-type of distortions.
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: September 24, 2013
    Assignee: Texas Instruments Incorporated
    Inventor: Patrick Rene Destain
  • Patent number: 8493496
    Abstract: Apparatus for mapping an object includes an illumination assembly (30, 50), which includes a single transparency (36) containing a fixed pattern (60, 70, 80) of spots. A light source (34, 52) transilluminates the single transparency with optical radiation so as to project the pattern onto the object (28). An image capture assembly (32) captures an image of the pattern that is projected onto the object using the single transparency. A processor (24) processes the image captured by the image capture assembly so as to reconstruct a three-dimensional (3D) map of the object.
    Type: Grant
    Filed: April 2, 2008
    Date of Patent: July 23, 2013
    Assignee: Primesense Ltd.
    Inventors: Barak Freedman, Alexander Shpunt, Meir Machline, Yoel Arieli
  • Patent number: 8388146
    Abstract: An anamorphic projection device is described. In one aspect, the device includes at least one camera and a projector such as a pico projector. The device receives information from the camera to sense position and orientation of a projection surface independent of the device. Based on this received information, the device renders an anamorphic image for perspective viewing on the sensed projection surface. In one implementation, the device receives the image wirelessly, for example, from a website. In one aspect, the device includes a user interface or UI. The UI allows a device user to navigate a projected image (e.g., use a cursor control or other means to navigate a webpage), present/download a new projected image, lock a projected image to a coordinate space on the projection surface to reduce or eliminate movement of the projected image responsive to user or device movement, etc.
    Type: Grant
    Filed: August 1, 2010
    Date of Patent: March 5, 2013
    Assignee: T-Mobile USA, Inc.
    Inventor: Charles Goran
  • Patent number: 8384995
    Abstract: A rear-type projection board apparatus (rear-surface projection-type video display apparatus), of new structure, having no necessity of a housing, being superior in portability, cheaply producible, comprises a transmission-type screen, being disposed within an interior space, under a condition of exposing both surfaces thereof in the space, and for transmitting a visual light projected onto a rear surface therethrough, so as to display it on a video display surface on a front surface, and a video projection apparatus (projector), being disposed at a predetermined position on a rear surface side of the transmission-type screen, and for projecting the visual light from a rear surface of the transmission-type screen, enlargedly, wherein the transmission-type screen has a Fresnel lens having Fresnel lens surfaces, covering over an entire light receiving surface for receiving the visual light, which is enlargedly projected from the video projection apparatus, whereby guiding the visual light received from the vide
    Type: Grant
    Filed: April 21, 2011
    Date of Patent: February 26, 2013
    Assignee: Hitachi Consumer Electronics Co., Ltd.
    Inventors: Koji Hirata, Hidehiro Ikeda, Toshihiko Matsuzawa, Tadashi Sato
  • Patent number: 8371697
    Abstract: A method for image projection on a screen, including providing an image to be projected on the screen, determining excitation light representing the image, and illuminating with the excitation light at least one light excitable layer disposed on the screen, wherein the light excitable layer is configured to be stimulated for the emission of visible light based on the excitation light.
    Type: Grant
    Filed: March 5, 2008
    Date of Patent: February 12, 2013
    Assignee: Sony Deutschland GmbH
    Inventors: Thomas Kemp, Markus Kamm
  • Patent number: 8356906
    Abstract: A screen unit includes an upper horizontal rim, lateral vertical rims, and a lower horizontal rim U-shaped in cross section that cover four side outer peripheries of a laminated body including a thin sheet glass, a Fresnel lens sheet that is a part of a cylindrical surface with an axis line extending in a first direction parallel to the thin sheet glass and is warped in a shape convex toward a side of the thin sheet glass, and a lenticular lens sheet that is a part of a cylindrical surface with an axis line extending in a direction parallel to the thin sheet glass and perpendicular to the first direction, is warped in a shape convex toward a side of the thin sheet glass, and sandwiches the thin sheet glass with the Fresnel lens sheet.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: January 22, 2013
    Assignee: Mitsubishi Electric Corp.
    Inventor: Tomomi Matsui
  • Patent number: 8310762
    Abstract: A lens array includes a plurality of lenses having respective optical axes that are approximately parallel to each other, wherein the plurality of lenses are configured in a direction approximately perpendicular to the optical axes and are formed integrally with each other, and a maximum inclination angle of a lens surface on each of a predetermined number of the plurality of lenses is less than or equal 50.8 degrees or less, the maximum inclination angle being defined as a maximum value of an angle formed by an optical axis and a normal line of a lens surface of one of the predetermined number of the plurality of lenses.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: November 13, 2012
    Assignee: Oki Data Corporation
    Inventor: Akihiro Yamamura
  • Patent number: 8284452
    Abstract: A method is disclosed for screening color separations of a lenticular image with a lenticular frequency of the lenticular lenses needed for viewing the lenticular image. An amplitude-modulated halftone image is calculated for each of the color separations at a screen angle and at a screen frequency, the tangent of the screen angle being a rational number. For a specific color separation, a screen angle relating to the direction perpendicular to the image strips of the lenticular image is defined, a pair of whole numbers whose ratio is equal to the tangent of the screen angle is determined, and the screen frequency of the color separation is calculated as the product of the lenticular frequency and the square root of the sum of the squares of the two whole numbers.
    Type: Grant
    Filed: May 19, 2009
    Date of Patent: October 9, 2012
    Assignee: Heidelberger Druckmaschinen AG
    Inventor: Dietrich Blum
  • Patent number: 8228445
    Abstract: A rear projection imaging system with an image warping distortion correction system using a camera and processing unit to generate a warping map that corrects for image distortion. The warping map is generated in an iterative process by displaying a known pattern on a viewing screen and, through the use of a camera, having a microprocessor determine the location and shape of the pattern on the screen. The microprocessor then compares the displayed image to the original reference image, calculates the distortion effects present in the projection optics, and generates a warping map.
    Type: Grant
    Filed: January 25, 2011
    Date of Patent: July 24, 2012
    Assignee: Fakespace Labs, Inc.
    Inventors: Ian E. McDowall, Mark T. Bolas
  • Patent number: 8203786
    Abstract: Methods and apparatus for a display system include a frame and one or more screen panels. Each panel has an inwardly disposed face and an outwardly disposed face. An adhesive layer couples to respective portions of each inwardly disposed face. At least one of the adhesive layers couples the one or more screen panels to the frame.
    Type: Grant
    Filed: December 28, 2006
    Date of Patent: June 19, 2012
    Assignee: Texas Instruments Incorporated
    Inventor: Matthew G. Hine
  • Patent number: 8134781
    Abstract: There is provided an optical film for backlight units or illuminators. The optical film comprises a light-incident portion and a light exit portion. Here, the optical film is characterized in that it comprises a plurality of protrusions formed on at least one of the light-incident portion and the light exit portion, wherein a plurality of the protrusions satisfies the requirements of the following Equation: 80×H1/3?P?200×H1/3 and 0.I×D?H?D, provided that a mean diameter of protrusions is represented by ‘D’, a mean height of protrusions is represented by 1H?, and a mean distance between adjacent protrusions is represented by ‘P’. Therefore, the optical film may be useful to suppress blocking between films and the formation of surface defects, which are caused by the Moire, Newton ring and wet-out phenomena, without degrading the brightness.
    Type: Grant
    Filed: March 3, 2009
    Date of Patent: March 13, 2012
    Assignee: LG Chem, Ltd.
    Inventors: Sang-Choll Han, Kwang-Seung Park, Kyung-Mo Kim, Won-Young Jo, Jin-Hyun Kim
  • Patent number: 8134660
    Abstract: The present invention provides an optical diffusion device, which can exhibit discontinuously different optical properties only in desired regions without creating any difference in grades and/or breaks, facilitate control of the optical diffusion properties, and prevent the occurrence of the stray light, as well as provides a projection screen and a design member, both using the optical diffusion device. An exemplary optical diffusion device according to this invention includes a base, and a cholesteric liquid crystal polymer layer provided on the base and composed of a plurality of diffusion regions arranged on a plane. A diffusion angle of one of the diffusion regions (e.g., first diffusion regions) of the cholesteric liquid crystal polymer layer is different from a diffusion angle of another of the diffusion regions (e.g., second diffusion regions).
    Type: Grant
    Filed: March 13, 2007
    Date of Patent: March 13, 2012
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Masanori Umeya, Masachika Watanabe, Minoru Azakami
  • Patent number: 8071672
    Abstract: To provide a lenticular lens sheet having a fine light shielding pattern that has high color reproducibility. [MEANS FOR SOLVING PROBLEMS] The above problem can be solved by a lenticular lens sheet, in which the average primary particle diameter of carbon black contained in a light shielding layer is not less than 10 nm and not more than 50 nm and, preferably, in an image of the cross-section of the light shielding layer under scanning electron microscopic observation, the area ratio of carbon black to the whole image is not less than 60% and not more than 95%, and a process for producing the lenticular lens sheet.
    Type: Grant
    Filed: March 14, 2006
    Date of Patent: December 6, 2011
    Assignee: Kuraray Co., Ltd.
    Inventors: Takahiro Kitano, Masayasu Ogushi
  • Patent number: 8061845
    Abstract: A viewing angle can be broadened without causing degradation in resolution of a three-dimensional image by a retinal scanning display. An image display system includes a projector which displays an image in a first region by projecting an image onto a screen, and a retinal scanning display which displays an image in a second region provided in the first region by projecting the image onto a pupil of a user. A position for displaying a three-dimensional content out of the image to be displayed in the first region is determined. The three-dimensional content is displayed on the retinal scanning display when the position falls within the second region, while the three-dimensional content is displayed on the projector when the position falls outside the second region.
    Type: Grant
    Filed: June 18, 2008
    Date of Patent: November 22, 2011
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Haruhisa Takayama
  • Publication number: 20110273673
    Abstract: Various embodiments related to a rear projection display screen configured to reduce an intensity of light at a viewing angle at which the light is less likely to be viewed by a user are disclosed. One disclosed embodiment provides a diffusing screen comprising a sheet-like structure transparent to one or more wavelengths of light. The sheet-like structure has a viewing surface and comprises a diffusing pattern configured to create destructive interference of a selected wavelength of light traveling in a direction normal to a plane of the viewing surface of the screen.
    Type: Application
    Filed: July 21, 2011
    Publication date: November 10, 2011
    Applicant: MICROSOFT CORPORATION
    Inventor: Prafulla Masalkar
  • Patent number: 8023185
    Abstract: A transmission type screen for stereoscopic images having a transmission layer includes an incident surface having a gloss surface, a transmission layer having a refractive index less than 1.55, a transmissivity more than 60%, and an imaging surface having surface particle sizes of 40 to 400 mesh that avoids a hot spot. The imaging surface is formed on the final surface through which images are transmitted, so that the components operate in an organic fashion with respect to each other. The polarization degree of stereoscopic images is maximized thereby increasing the three-dimensional effect and the transmissivity, and enables viewers to view images clearly several times better than with a conventional screen.
    Type: Grant
    Filed: September 23, 2009
    Date of Patent: September 20, 2011
    Inventor: Hae-Yong Choi
  • Patent number: 8009361
    Abstract: A lens array includes: a lens array substrate having a light transmissive property; a first lens disposed on the lens array substrate; and a second lens disposed on the lens array substrate in a first direction from the first lens and different from the first lens in peripheral shape.
    Type: Grant
    Filed: August 19, 2009
    Date of Patent: August 30, 2011
    Assignee: Seiko Epson Corporation
    Inventors: Yujiro Nomura, Ken Ikuma
  • Patent number: 8002482
    Abstract: A transparent screen is constructed in such a way that a plurality of Fresnel prisms 12d each of which is smaller than a plurality of Fresnel prisms 12a and has a shape approximately similar to that of each of the plurality of Fresnel prisms 12a are arranged in a sawtooth shape on a non-light incidence surface portion of a Fresnel lens 12 on a light incidence side to which any image light PB applied from a projector 1 is not applied directly because blocked by a Fresnel prism 12a placed frontwardly.
    Type: Grant
    Filed: April 7, 2009
    Date of Patent: August 23, 2011
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takao Endo, Yuzo Nakano, Hayato Takeuchi
  • Patent number: 8004760
    Abstract: Various embodiments related to rear-projection image display are disclosed. For example, one disclosed embodiment provides a projector for projecting an image and a screen configured to display the image. The screen comprises a filter layer having a light reception side and an image display side. The filter layer includes an array of trapezoidal transmissive elements and an array of trapezoidal absorption elements, where a wider base of each of the trapezoidal transmissive elements faces the light reception side of the filter layer, and where a wider base of each of the trapezoidal absorption elements faces the image display side of the filer layer.
    Type: Grant
    Filed: October 28, 2009
    Date of Patent: August 23, 2011
    Assignee: Microsoft Corporation
    Inventors: Zhiqiang Liu, Prafulla Masalkar, Karlton Powell
  • Publication number: 20110188009
    Abstract: A screen unit includes an upper horizontal rim, lateral vertical rims, and a lower horizontal rim U-shaped in cross section that cover four side outer peripheries of a laminated body including a thin sheet glass, a Fresnel lens sheet that is a part of a cylindrical surface with an axis line extending in a first direction parallel to the thin sheet glass and is warped in a shape convex toward a side of the thin sheet glass, and a lenticular lens sheet that is a part of a cylindrical surface with an axis line extending in a direction parallel to the thin sheet glass and perpendicular to the first direction, is warped in a shape convex toward a side of the thin sheet glass, and sandwiches the thin sheet glass with the Fresnel lens sheet.
    Type: Application
    Filed: January 31, 2011
    Publication date: August 4, 2011
    Inventor: Tomomi MATSUI
  • Patent number: 7931377
    Abstract: A screen including a first plane and a second plane opposite to the first plane, at least one of which is illuminated with light, includes a reflective portion that reflects the light incident on the first plane, a transmissive portion that transmits the light incident on the second plane toward the first plane, and an optical element that focuses the light incident on the second plane such that the focused light is incident on the transmissive portion.
    Type: Grant
    Filed: April 15, 2008
    Date of Patent: April 26, 2011
    Assignee: Seiko Epson Corporation
    Inventors: Junichiro Shinozaki, Takashi Nagate, Seiichi Taniguchi
  • Patent number: 7876384
    Abstract: A rear projection imaging system with an image warping distortion correction system using a camera and processing unit to generate a warping map that corrects for image distortion. The warping map is generated in an iterative process by displaying a known pattern on a viewing screen and, through the use of a camera, having a microprocessor determine the location and shape of the pattern on the screen. The microprocessor then compares the displayed image to the original reference image, calculates the distortion effects present in the projection optics, and generates a warping map.
    Type: Grant
    Filed: August 28, 2007
    Date of Patent: January 25, 2011
    Assignee: Fakespace Labs, Inc.
    Inventors: Ian E. McDowall, Mark T. Bolas
  • Patent number: 7835079
    Abstract: The viewing angle brightness sensitivity typically encountered in tiled rear projection display systems cannot be solely overcome by edge blending and calibration techniques. The rear projection array display-screen system of this invention, being comprised of a micro-structure array screen combined with a conventional diffusion screen, overcomes this viewing angle brightness sensitivity in both linear as well as matrix tiled rear projection display systems including those that use wide field-of-view projectors. The latter capability enables low form-factor and compact packaging of tiled rear projection display systems.
    Type: Grant
    Filed: April 10, 2007
    Date of Patent: November 16, 2010
    Assignee: Ostendo Technologies, Inc.
    Inventors: Hussein S. El-Ghoroury, Dale A. McNeill, Jingbo Cai
  • Publication number: 20100220391
    Abstract: A lenticular lens sheet including: rows of cylindrical lenses on an incident surface side; protrusions on sections of the lens rows where light is not condensed; and light absorption layers on the protrusions. The pitch of the lens rows is smaller than 0.5 mm, the angle between the lowermost section of the protrusion and a sheet main surface is equal to or greater than 45° and is greater than the angle formed between the vertex of the protrusion and the sheet main surface, and the width of the protrusion measured at a position 10 ?m away in the sheet thickness direction from the vertex of the protrusion is equal to or smaller than 150 ?m. A light shielding layer thick enough formed on the protrusion of a lenticular lens can be easily and uniformly formed even if the pitch of the lenticular lens rows is small, and thereby contrast of external light can be enhanced.
    Type: Application
    Filed: July 31, 2006
    Publication date: September 2, 2010
    Applicant: Kuraray Co., Ltd.
    Inventors: Yoshio Abe, Youji Ono
  • Patent number: 7754781
    Abstract: An active energy beam-curable composition is provided, which is excellent in coatability to films and safety, and particularly suitable for use in a light diffusion film since a light diffusion film made of a cured product of the composition is excellent in both haze and total light transmittance. The active energy beam-curable composition comprises an ethylenically unsaturated group-containing compound (A) that contains, as an essential component thereof, a compound having an ethylenically unsaturated group and an aromatic group, and a granular substance (B) that is insoluble in the component (A), in which the subtraction of the refractive index of the component (B) from the refractive index of a cured product of the component (A) alone is not less than 0.03 and not more than 0.18.
    Type: Grant
    Filed: February 27, 2006
    Date of Patent: July 13, 2010
    Assignees: Toagosei Co., Ltd., Kuraray Co., Ltd.
    Inventors: Yasyuki Sanai, Atsushi Nagasawa
  • Patent number: 7727626
    Abstract: A light diffusion plate has a substrate and a light diffusion layer formed on the substrate. The light diffusion layer is composed of at least two layers: a first light diffusion layer containing a first matrix and a first light diffusion agent having a refractive index difference ?n1 of 0.04??n1?0.2 with the first matrix, and a second light diffusion layer containing a second matrix and a second light diffusion agent having a refractive index difference ?n2 of 0.005??n2?0.01 with the second matrix. The volume fraction of the first light diffusion agent in the first light diffusion layer is less than 40%, the volume fraction of the second light diffusion agent in the second light diffusion layer is at least 40% and the total thickness of the light diffusion layers is from 5 to 200 ?m after curing.
    Type: Grant
    Filed: December 4, 2007
    Date of Patent: June 1, 2010
    Assignee: Asahi Glass Company, Limited
    Inventors: Hisao Inokuma, Toshihiko Higuchi, Akira Mitsui
  • Patent number: 7686463
    Abstract: A view angle control sheet which can suppress a decrease in screen brightness is provided. Lens portions having trapezoidal shapes in cross section are arranged at predetermined intervals, and a wedge-shaped portion between the lens portions adjacent to each other is filled with the same material as the lens portion or with a material different from the lens portion. In the wedge-shaped portion, a bottom surface is provided on a screen image side while a leading edge is provided on an observer side, and at least a slope portion of the wedge-shaped portion is made of a material having a refractive index lower than that of a lens portion material.
    Type: Grant
    Filed: April 26, 2005
    Date of Patent: March 30, 2010
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventor: Masahiro Goto