Plural Patents (Class 353/78)
  • Patent number: 10261399
    Abstract: A projection system relates to the field of display technologies, and includes a projection unit, a screen unit, an outer frame, and a support structure component. The support structure component is configured to securely connect the screen unit to the outer frame. The support structure component is located on a light incident side of the screen unit. The support structure component includes a light transmission part and at least one connecting part. The light transmission part is securely connected to the screen unit. The light transmission part is configured to enable light rays emitted by the projection unit and irradiating the light transmission part to pass through. The at least one connecting part is located out of propagation paths of light rays emitted by the projection unit. The at least one connecting part is configured to securely connect the light transmission part to the outer frame.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: April 16, 2019
    Assignees: Huawei Technologies Co., Ltd., Cambridge Enterprise Limited
    Inventors: Zhi Huang, Brian Robertson, Daping Chu
  • Patent number: 10185132
    Abstract: A floating image display device includes an image display for displaying a display image; a beam splitter for splitting light emitted from the display image into first light and second light; and a curved retroreflective sheet for retroreflecting the first light to display a floating image based on the display image at a space in air so that the floating image is seen from a predetermined reference position, wherein the image display, the beam splitter and the curved retroreflective sheet are arranged so that the first light traveling from the beam splitter to the curved retroreflective sheet is retroreflected and specularly reflected, a retroreflected light based on the first light travels from the curved retroreflective sheet via the beam splitter to the reference area and a specularly-reflected light based on the first light travels from the curved retroreflective sheet toward outside of the reference area.
    Type: Grant
    Filed: January 30, 2017
    Date of Patent: January 22, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Hidetsugu Suginohara
  • Patent number: 10031324
    Abstract: A projection optical system is constituted by, in order from the reduction side, a first optical system for forming an image displayed by image display elements as an intermediate image, and a second optical system for forming the intermediate image on a magnification side conjugate plane. The second optical system is constituted by, in order from the reduction side, a first lens group having a positive refractive power, a first optical path bending means that bends an optical path with a reflective surface, a second lens group having a positive refractive power, a second optical path bending means that bends an optical path with a reflective surface, and a third lens group having a negative refractive power. Conditional Formulae (1) and (2) below are satisfied. 0.05<|f23|/D223<0.50??(1) 5.0<D212/|f|<20.0??(2).
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: July 24, 2018
    Assignee: FUJIFILM Corporation
    Inventor: Masaru Amano
  • Patent number: 9039196
    Abstract: An image displaying apparatus including a light source, an image displaying element configured to control exiting of incident light to display an image, an illumination optical system configured to illuminate the image displaying element with light exiting from the light source, and a projection optical system configured to project an image displayed on a display surface of the image displaying element, to provide an enlarged display. The projection optical system includes a lens optical system, a first mirror configured to reflect light transmitted through the lens optical system, and a second mirror configured to reflect light reflected from the first mirror toward the surface to be projected onto, and one of the mirrors is arranged at a position conjugate to the image displaying element, and wherein an optical surface of the one mirror is arranged to face vertically downward.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: May 26, 2015
    Assignee: RICOH COMPANY, LTD.
    Inventors: Makoto Hirakawa, Hibiki Tatsuno, Takanobu Osaka, Yasuyuki Shibayama, Kiichiro Nishina
  • Patent number: 9004699
    Abstract: A light source system for use in a projector is provided. The light source system comprises a main optical axis, a first sub-optical axis, a second sub-optical axis, at least one first optical module, at least one second optical module and a third optical module. The at least one first optical module comprises a first light source array and a second light source array for emitting a plurality of first beams and a plurality of second beams respectively. The at least one second optical module comprises a third light source array for emitting a plurality of third beams. The third optical module integrates the first beams, the second beams and the third beams into a main beam for projection along the main optical axis.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: April 14, 2015
    Assignee: Delta Electronics, Inc.
    Inventor: June-Jei Huang
  • Patent number: 8992025
    Abstract: The invention relates to a rear project device, comprising a screen, projection optics, and an image module for generating an image, which is projected from the rear onto the screen by means of the projection optics, so that an observer located in front of the screen can perceive the image projected onto the screen. Furthermore, a method for such a rear projection apparatus is described. To this end, a Fresnel mirror, or an aspherical mirror, is used.
    Type: Grant
    Filed: January 25, 2008
    Date of Patent: March 31, 2015
    Assignee: Young Optics Inc.
    Inventors: Eberhard Piehler, Gudrun Schroeter, Guenther Benedix, Gertrud Blei, Thomas Maack
  • Patent number: 8905550
    Abstract: A disclosed projection optical system projects images on a surface to be projected on. The projection optical system includes a first optical system including at least one refraction optical system and having positive power as a whole, a folding mirror, and a second optical system including at least one reflection surface having power and having positive power as a whole. Further the folding mirror folds a light path from the first optical system to the second optical system, and in a plane including an optical axis of the first optical system and a normal line of the surface to be projected on, the following conditional expressions (1) through (3) are satisfied (1) 0.43?d1, (2) 0.43?d2, and (3) 0.7?d2/d1?2.0.
    Type: Grant
    Filed: May 9, 2011
    Date of Patent: December 9, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Tatsuya Takahashi, Kazuhiro Fujita, Issei Abe
  • Patent number: 8777421
    Abstract: A projection optical system includes first and second optical systems. The first optical system includes a transmissive-refractive element and the second optical system includes a reflective-refractive element. An image formed by a spatial light modulator is projected by the projection optical system on a projection surface. A light beam that travels along an optical path that leads from the second optical system to the projection surface in an optical path between a center of the image formed by the spatial light modulator and the projection surface is projected at an angle with respect to a normal to the projection surface. An optical axis of the first optical system is folded to a folded position by an optical path deflecting unit in an area of the first optical system where the light beam entering the optical path deflecting unit is a converging light beam or a substantially parallel light beam.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: July 15, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Atsushi Takaura, Kazuhiro Fujita, Issei Abe, Akihiro Yamakage, Osamu Nagase, Yoshitsugu Kohno
  • Patent number: 8573787
    Abstract: In a projection type display apparatus for enabling to display an image, by projecting an image on an image display element(s), enlargedly, upon a nearly horizontal surface, such as, a table, a reflection mirror for reflecting a light from a light source is so disposed that an optical axis of the light source is nearly perpendicular to an optical axis of a lens group having a plural number of lens elements, which are disposed symmetric with respect to the optical axis.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: November 5, 2013
    Assignee: Hitachi Consumer Electronics Co., Ltd.
    Inventors: Koji Hirata, Masahiko Yatsu, Takanori Hisada
  • Patent number: 8529070
    Abstract: A projection optical apparatus capable of providing high image quality and having a reduced size is disclosed. The projection optical apparatus includes a light valve and a projection optical system including a first optical system having a transmissive-refractive element and a second optical system having a reflective-refractive element. An image formed on the light valve is projected by the projection optical system on a projection surface. The optical axis in the first optical system is folded both vertically and horizontally. The first group of the first optical system is contained in a space (dead space) whose lower limit is defined by a lower edge of the second optical system, thereby reducing the depth of the apparatus.
    Type: Grant
    Filed: September 2, 2008
    Date of Patent: September 10, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Atsushi Takaura, Kazuhiro Fujita, Issei Abe, Akihiro Yamakage, Osamu Nagase, Yoshitsugu Kohno
  • Publication number: 20130215398
    Abstract: A video projection device includes an optical engine, a projection lens, a reflection mirror, a non-spherical mirror, a screen, and a cabinet which covers the lower surface and the back surface of the screen. The projection lens and the non-spherical mirror are placed at an approximate center in the leftward and rightward directions of the screen and at a back portion within the cabinet. The reflection mirror is placed at an approximate center in the leftward and rightward directions of the screen and at a front portion within the cabinet. The video projection device further includes projection-unit structural members for integrally coupling the projection lens, the reflection mirror and the non-spherical mirror to each other, thereby forming a projection unit.
    Type: Application
    Filed: September 4, 2012
    Publication date: August 22, 2013
    Inventors: Kenichiro OKURA, Haruhiko MATOBA, Kohei ETO
  • Patent number: 8511837
    Abstract: A projection optical system configured to project an image onto a projection surface includes a first optical system including at least one dioptric system and having positive power as a whole; a second optical system including a reflection region and a transmission region; and a third optical system including at least one reflecting surface having power, and having positive power as a whole, wherein light entering the projection optical system passes through the first optical system to have a path thereof bent by the reflection region of the second optical system to be incident on the third optical system, and the light incident on the third optical system has the path thereof bent by the third optical system to pass through the transmission region of the second optical system to be incident on the projection surface.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: August 20, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Tatsuya Takahashi, Kazuhiro Fujita, Issei Abe
  • Patent number: 8474984
    Abstract: A projection display device includes a light source, an optical intensity-equalizing element, an optical modulating element, an optical diffusion element, a relay optical system that is configured such that an output end of the optical intensity-equalizing element and a display element plane of the optical modulating element are optically conjugate, and a projection optical system. The relay optical system includes a first lens unit that condenses a light from the optical intensity-equalizing element and a second lens unit that further condenses a light from the first lens unit. The optical diffusion element is arranged between an light incident side of the first lens unit and the optical intensity-equalizing element. An optical axis of the second lens unit and a center of the output end of the optical intensity-equalizing element are shifted in a same direction from an optical axis of the first lens unit.
    Type: Grant
    Filed: January 26, 2011
    Date of Patent: July 2, 2013
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shinji Yagyu, Koji Nakanishi
  • Patent number: 8459798
    Abstract: An illumination apparatus includes a light source, a polarization splitter disposed facing the light source at about 45 degrees with respect to its light emission direction, a first reflector reflecting and condensing one of the polarization light components polarized and split by the polarization splitter, a quarter wave plate disposed between the polarization splitter and the first reflector, a second reflector reflecting and condensing the other of the polarization light components polarized and split by the polarization splitter, a third reflector disposed around the light source and reflecting the other polarization light reflected by the second reflector and the polarization splitter and proceeding in the light source direction, and a quarter wave plate disposed between the polarization splitter and the third reflector and around the light source, the light reflected at the first reflector and reflected at the polarization splitter being used to illuminate a predetermined surface.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: June 11, 2013
    Assignee: Nikon Corporation
    Inventor: Nobuhiro Fujinawa
  • Patent number: 8439506
    Abstract: A reflector mounting structure includes a reflector and a fixing member. The reflector includes: a reflecting surface; a reflector body having the reflecting surface formed thereon; a pair of first connecting units provided respectively at an end face of the reflector body and having a substantially spherical first protrusion at an end thereof; and a second connecting unit provided at an end face of the reflector body. The fixing member which supports the reflector includes a pair of first supporting units respectively having a planar contact portion and bringing the contact portion into contact with an end of the first protrusion, and a second supporting unit. A contact-portion vertical distance is set such that the first protrusion moves while rolling with respect to a contact portion when the reflector deforms.
    Type: Grant
    Filed: June 24, 2010
    Date of Patent: May 14, 2013
    Assignee: Mitsubishi Electric Corporation
    Inventors: Satoru Okagaki, Norihiro Watanabe, Atsushi Michimori
  • Patent number: 8403502
    Abstract: A front-projection display system having a screen with improved brightness and/or resolution of an image displayed on outer portions thereof. The screen has a display surface that is generally a convex shape having a curvature of the display surface in the vertical direction of an image projected thereon that is less than a curvature of the display surface in the horizontal direction.
    Type: Grant
    Filed: November 18, 2008
    Date of Patent: March 26, 2013
    Assignee: Barco N.V.
    Inventor: Moshe Oren
  • Patent number: 8403504
    Abstract: In a projection type display apparatus for enabling to display an image, by projecting an image on an image display element(s), enlargedly, upon a nearly horizontal surface, such as, a table, a reflection mirror for reflecting a light from a light source is so disposed that an optical axis of the light source is nearly perpendicular to an optical axis of a lens group having a plural number of lens elements, which are disposed symmetric with respect to the optical axis.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: March 26, 2013
    Assignee: Hitachi, Ltd.
    Inventors: Koji Hirata, Masahiko Yatsu, Takanori Hisada
  • Patent number: 8388148
    Abstract: An optical system is provided which includes an illumination system with a light source, a lens member which guides light from the light source, and a mirror member; an image unit on which an image is formed and on which light from the illumination system is incident; a projection system which magnifies and projects the image formed on the image unit; and a blocking unit which is mounted to the mirror member of the illumination system and partially blocks light from the light source that is directed to the mirror member.
    Type: Grant
    Filed: May 3, 2010
    Date of Patent: March 5, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kee-uk Jeon, Sang-ik Kim, Kyoung-choul Jang, Boing-jo Kang, Wook-jae Jeon
  • Patent number: 8342691
    Abstract: An information technology system includes a micro projector display for displaying status, operating, troubleshooting, and location information. An image output from the micro projector display is viewable from outside the enclosure, for example on a cabinet door, an optional retractable projection screen included with the enclosure, or a floor, wall, or ceiling of a room, or other external surface. In some embodiments of the invention, a micro display projector is adapted for removable electrical and mechanical connection to one or more docking ports on the information technology system. In some embodiments of the invention, a projection direction for the micro projector display is selectable.
    Type: Grant
    Filed: February 3, 2010
    Date of Patent: January 1, 2013
    Assignee: International Business Machines Corporation
    Inventors: Aaron R. Cox, Michael A. Curnalia, Christina M. Kokini, Leslie A. Velasco
  • Patent number: 8240857
    Abstract: An expanding chassis for an imaging unit is provided, the expanding chassis for use in imaging systems having a plurality of imaging units arranged in an array. The expanding chassis comprises a rigid frame for housing a light engine and related circuitry, and for mounting a screen on a front surface of the rigid frame for use with the light engine. The expanding chassis further comprises at least one expandable interface pad on at least one side of the rigid frame. The rigid frame and the expandable interface pad have a combined thermal expansion characteristic that provides an overall expansion in the expanding chassis that substantially matches the expansion of the screen.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: August 14, 2012
    Assignee: Christie Digital Systems USA, Inc.
    Inventors: Bryan Hemphill, Les Hirst, Dan Adema
  • Patent number: 8220931
    Abstract: A stereoscopic digital image projecting system has a light source system energizable to provide polarized illumination having a first polarization state and a beam splitting system alternately generating first and second light beams having different polarization states from the polarized illumination. A combining system has a polarization beam combiner that combines the first and second light beams into a combined light beam. A spatial light modulator is used to modulate the combined light beam in a manner consistent with stereoscopic image data to form a first modulated image from illumination in the combined light beam having the first polarization state and to form a second modulated image from illumination in the combined light beam having the second polarization state. Projection optics are configured to project the first and second modulated images onto a display surface.
    Type: Grant
    Filed: July 7, 2009
    Date of Patent: July 17, 2012
    Assignee: Eastman Kodak Company
    Inventors: Barry D. Silverstein, James R. Kircher, Joseph R. Bietry
  • Patent number: 8210693
    Abstract: A projection type image display apparatus includes: a light source; an illumination optical system that uniformly illuminates beams, which are emitted from the light source, on a surface of an image modulation element as a primary image plane; and a projection optical system that projects image information of the primary image plane modulated by the image modulation element on a screen as a secondary image plane in an enlarged manner. The projection optical system includes a first optical system having a positive refractive power and including a plurality of transmissive surfaces, and a second optical system having a positive refractive power and including a concave reflective surface. The first optical system has a first reflective surface disposed between any surfaces of the plurality of transmissive surfaces, and a second reflective surface disposed between the first optical system and second optical system.
    Type: Grant
    Filed: March 18, 2010
    Date of Patent: July 3, 2012
    Assignee: Sony Corporation
    Inventor: Jun Nishikawa
  • Patent number: 8167436
    Abstract: A display shelf system includes a display shelf, which includes a plurality of placing tables which are adapted to have an article placed thereon. A plurality of transmission-type screens are arranged with the placing tables, respectively. A projector projects a projector image, and a light guide of the display shelf leads the projector image onto the rear sides of the transmission-type screens. The transmission-type screens have curved surfaces which are inclined to face toward a lateral direction with respect to a front of the display shelf, so that the transmission-type screens are easily viewable by viewers who are in the lateral directions of the display shelf.
    Type: Grant
    Filed: April 26, 2011
    Date of Patent: May 1, 2012
    Assignee: Toshiba Tec Kabushiki Kaisha
    Inventors: Yoshihiko Ikeda, Hiroki Mochizuki
  • Patent number: 8157386
    Abstract: In a projection optical system comprising: two lens groups, and a curved plane mirror, wherein the projection optical system including two story structure, and having bend means for bending at least two times the light incident from an electro-optic modulator.
    Type: Grant
    Filed: September 8, 2011
    Date of Patent: April 17, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Satoru Nagarekawa, Eiji Morikuni, Nobutaka Minefuji, Masayuki Okoshi
  • Patent number: 8128234
    Abstract: A position adjustment device for an integration rod includes a fixed plate, two resilient members, and two adjusting screws. The first resilient member is positioned between the fixed plate and the rod for exerting an elastic force on the rod in a first direction, and the second resilient member is positioned between the fixed plate and the rod for exerting an elastic force on the rod in a second direction different from the first direction. The first adjusting screw is inserted through the part of the housing and has a first end surface that presses against one side surface of the rod opposite the first resilient member. The second adjusting screw is inserted through the part of the housing and has a second end surface that presses against one side surface of the rod opposite the second resilient member. The first and the second end surface are arc surfaces.
    Type: Grant
    Filed: May 1, 2009
    Date of Patent: March 6, 2012
    Assignee: Coretronic Corporation
    Inventors: Chien-Chang Huang, Yung-Chuan Tseng
  • Patent number: 8113664
    Abstract: In a projection optical system comprising: two lens groups, and a curved plane mirror, wherein the projection optical system including two story structure, and having bend means for bending at least two times the light incident from an electro-optic modulator.
    Type: Grant
    Filed: November 18, 2008
    Date of Patent: February 14, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Satoru Nagarekawa, Eiji Morikuni, Nobutaka Minefuji, Masayuki Okoshi
  • Patent number: 8113667
    Abstract: A projection optical system satisfies a conditional formula: 0.01<{(tan ?f1?tan ?f2)?(tan ?n1?tan ?n2)}ยท(?2/?1)<0.
    Type: Grant
    Filed: February 25, 2008
    Date of Patent: February 14, 2012
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Keiko Yamada, Kohtaro Hayashi, Soh Ohzawa, Masayuki Imaoka
  • Patent number: 8100539
    Abstract: A system for photographing an object and generating a three-dimensional display of the object without the need for the observer to wear special glasses employs a camera having an electronically tunable liquid crystal lens in which the focal plane of the lens may be adjusted by controlling the voltage on the lens. An operator of the camera focuses the camera on the scene to be imaged and the camera records a series of images at closely spaced focal lengths by varying the voltage applied to the lens between the images. The digitally recorded images are then used to generate a display on a multilayer transparent display substrate with pixel addressing capabilities. Each of the recorded images at the differing focal lengths are displayed on one of the layers of the display screen, with the closest focal length recorded being displayed on the top screen, the one most proximate to the observer, and with successive images on other screens. A three-dimensional image is produced.
    Type: Grant
    Filed: April 10, 2008
    Date of Patent: January 24, 2012
    Assignee: Tunable Optix Corporation
    Inventors: Ling-Yuan Tseng, Cheng-Hsing Liao
  • Patent number: 8052283
    Abstract: An oblique projection optical system enlarges an image formed on a display device surface, and obliquely projects the enlarged image on a screen surface. The oblique projection optical system has, in the order from a reduction side: a refraction optical portion having a positive optical power, a concave reflection surface having a positive optical power, and a convex reflection surface having a negative optical power. The refraction optical portion includes a rotationally symmetric coaxial refraction group. An intermediate image of the image formed on the display device surface is formed between the refraction optical portion and the concave reflection surface. An aperture stop image is formed between the concave reflection surface and the convex reflection surface. The concave reflection surface and the convex reflection surface fulfill prescribed conditional formulae.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: November 8, 2011
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Masayuki Imaoka, Keiko Yamada
  • Patent number: 8029145
    Abstract: A peripheral projection, display screen system including (a) a display screen having a rear side and a diagonal dimension, (b) an image-projection source coupled to a peripheral of the system and disposed at a defined, image-projection system depth rearwardly of the screen's rear side, (c) an optical path structure operatively interposed and optically coupling the source and the rear side of the screen, coupling the image from the source to the screen's rear side, and within the mentioned, defined image-projection system depth, a displayable image projected by the source, and (d) system geometry structure organizing the screen, the source, and the optical path structure, whereby the depth ratio of the diagonal dimension of the screen to the image-projection depth is equal to or more than 10:1.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: October 4, 2011
    Assignee: Rossella Limited
    Inventor: Edmund Sandberg
  • Patent number: 8021000
    Abstract: A flat projection television comprising an imagine engine mounted adjacent a top of an enclosure and optically coupled to a collimator mirror, a flat mirror, a mirror assembly comprising a plurality of cylindrical mirrors, and a diffuser screen. The image engine includes a cylindrical lens which expands an outgoing image horizontally. The image engine projects the image downward from the top of the enclosure toward the bottom of the enclosure where the horizontally expanding image encounters the collimator mirror which collimates the expanding beam bringing the horizontal lines back into parallel with one another. The collimator mirror also reflects the collimated image towards the front of the enclosure where it encounters the flat mirror oriented to deflect the image upward into the mirror box location of the enclosure at an appropriate angle.
    Type: Grant
    Filed: May 11, 2009
    Date of Patent: September 20, 2011
    Assignee: Mitsubishi Digital Electronics America, Inc.
    Inventor: Jerry B. Lowe
  • Patent number: 8007109
    Abstract: A three-dimensional display device includes a display panel displaying first to nth partial images along a circumference; and an n-gonal pyramid mirror including first to nth mirrors at n side surfaces, respectively, of the n-gonal pyramid mirror, wherein the first to nth mirrors reflect the first to nth partial images, respectively, and wherein each of the first to nth mirrors substantially makes a 45 degree angle with the display panel.
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: August 30, 2011
    Assignee: LG Display Co. Ltd.
    Inventor: Hyung-Ki Hong
  • Publication number: 20110205500
    Abstract: Transmission-type screens are placed corresponding to a display board at a front area of the display board, on which an article is placed. Each of the screens transmits and projects a projector image luminous flux projected from a backside of the screens to a front side of the screens. When the projector image luminous flux is projected from the backside of the screens, each of inner circumferences which defines a space including an image projecting space for leading the projector image luminous flux to the backside of the screens without obstruction. A display shelf might have a projector and a computer. The projector projects the projector image luminous flux. The display shelf might have a reflecting mirror which lead the projector image flux to the screens.
    Type: Application
    Filed: May 3, 2011
    Publication date: August 25, 2011
    Applicant: Toshiba Tec Kabushiki Kaisha
    Inventors: Yoshihiko Ikeda, Hiroki Mochizuki, Masanori Takeuchi, Makoto Nozawa, Yun Wang
  • Publication number: 20110199585
    Abstract: A display shelf system includes a display shelf, which includes a plurality of placing tables which are adapted to have an article placed thereon. A plurality of transmission-type screens are arranged with the placing tables, respectively. A projector projects a projector image, and a light guide of the display shelf leads the projector image onto the rear sides of the transmission-type screens. The transmission-type screens have curved surfaces which are inclined to face toward a lateral direction with respect to a front of the display shelf, so that the transmission-type screens are easily viewable by viewers who are in the lateral directions of the display shelf.
    Type: Application
    Filed: April 26, 2011
    Publication date: August 18, 2011
    Applicant: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Yoshihiko IKEDA, Hiroki Mochizuki
  • Patent number: 7997734
    Abstract: An image display controller for a display shelf generates image data for a projector image which is projected by a projector arranged in the display shelf to be displayed on a transmission-type screen of the display shelf. The image display controller includes a monitor, an input device, a data communicator, a memory, and a controller. The controller obtains an editing background image from the memory and displays the editing background image on the monitor, and generates contents of a display image. Moreover, the controller sets a position of the generated display image in a desired position of a display area of the editing background image in response to an instruction inputted via the input device, and generates the projector image by combining the generated display image into the editing background image at the set position.
    Type: Grant
    Filed: December 18, 2007
    Date of Patent: August 16, 2011
    Assignee: Toshiba Tec Kabushiki Kaisha
    Inventors: Hiroki Mochizuki, Yoshihiko Ikeda, Yun Wang
  • Patent number: 7972004
    Abstract: A system and method for uniform light generation in projection display systems. An illumination source comprises a light source to produce colored light, and a scrolling optics unit optically coupled to the light source, the scrolling optics unit configured to create lines of colored light from the colored light, and to scroll the lines of colored light along a direction orthogonal to a light path of the illumination source. The scrolling optics unit comprises a single light shaping diffuser to transform the colored light into the lines of colored light, an optical filter positioned in the light path after the light shaping diffuser, and a scrolling optics element positioned in the light path after the optical filter. The single light shaping diffuser is capable of simultaneously transforming colored light into lines of colored light having substantially uniform intensity to provide uniform illumination.
    Type: Grant
    Filed: April 18, 2008
    Date of Patent: July 5, 2011
    Assignee: Texas Instruments Incorporated
    Inventors: Terry Alan Bartlett, Paul L. Rancuret
  • Patent number: 7967448
    Abstract: A micro-mirror based projection display system in an enclosure with minimum chin and depth measurements is disclosed. A light source, such as a solid state laser light source, generates light of multiple primary colors that is modulated by a digital micro-mirror device. The projection optics of the system include a telecentric rear group of glass lenses with spherical surfaces, followed by a pair of aspheric lenses formed of plastic. A folding mirror, such as a single-piece or multi-piece angular mirror, is disposed between the aspheric lenses, to reduce the depth of the enclosure, and an aspheric mirror projects the image onto a TIR Fresnel projection screen. The aspheric lenses are magnifying to reduce the magnification required of the aspheric mirror, and the aspheric lenses and mirror are clipped to reduce enclosure volume. A folding mirror may be used after the aspheric mirror to further reduce the depth of the enclosure.
    Type: Grant
    Filed: December 18, 2007
    Date of Patent: June 28, 2011
    Assignee: Texas Instruments Incorporated
    Inventor: Patrick Rene Destain
  • Patent number: 7959300
    Abstract: A projection image display device including a display plane for displaying an image, a projection mechanism projecting an image on the display plane, and an imaging mechanism arranged on the same side of the display plane as the projection mechanism for imaging the display plane. The imaging mechanism is arranged at a position where a position symmetric with respect to the display plane of the projection mechanism is out of the range of the field angle of the imaging mechanism. By arranging the imaging mechanism at a position where no direct reflecting light of the light source of the projection mechanism comes, it is possible to prevent generation of a hot spot.
    Type: Grant
    Filed: June 29, 2006
    Date of Patent: June 14, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Keiichiroh Hirahara, Akira Sakurai
  • Patent number: 7954959
    Abstract: Transmission-type screens are placed corresponding to a display board at a front area of the display board, on which an article is placed. Each of the screens transmits and projects a projector image luminous flux projected from a backside of the screens to a front side of the screens. When the projector image luminous flux is projected from the backside of the screens, each of inner circumferences which defines a space including an image projecting space for leading the projector image luminous flux to the backside of the screens without obstruction. A display shelf might have a projector and a computer. The projector projects the projector image luminous flux. The display shelf might have a reflecting mirror which lead the projector image flux to the screens.
    Type: Grant
    Filed: September 2, 2010
    Date of Patent: June 7, 2011
    Assignee: Toshiba Tec Kabushiki Kaisha
    Inventors: Yoshihiko Ikeda, Hiroki Mochizuki, Masanori Takeuchi, Makoto Nozawa, Yun Wang
  • Patent number: 7954958
    Abstract: A display shelf system includes a display shelf, which includes a plurality of placing tables which are adapted to have an article placed thereon. A plurality of transmission-type screens are arranged with the placing tables, respectively. A projector projects a projector image, and a light guide of the display shelf leads the projector image onto the rear sides of the transmission-type screens. The transmission-type screens have curved surfaces which are inclined to face toward a lateral direction with respect to a front of the display shelf, so that the transmission-type screens are easily viewable by viewers who are in the lateral directions of the display shelf.
    Type: Grant
    Filed: February 20, 2008
    Date of Patent: June 7, 2011
    Assignee: Toshiba Tec Kabushiki Kaisha
    Inventors: Yoshihiko Ikeda, Hiroki Mochizuki
  • Patent number: 7946713
    Abstract: A display apparatus, comprises a filter unit 33 attached on an air inlet opening 28a, having such a filter 36 that a suction negative load generating at the air inlet opening 28a formed in an upper cabinet 3 comes to be smaller than the suction load generating at gaps 29a and 30a defined in the upper cabinet 3, when driving a cooling unit 18, for sucking an air from the upper cabinet 3 and discharging the air used for cooling into the upper cabinet 3, when cooling down optical parts, such as, display devices 15R, etc., and a polarizing plate 16R, etc., of an optic unit 9.
    Type: Grant
    Filed: March 15, 2007
    Date of Patent: May 24, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Yuji Kishi, Nobuyuki Kaku
  • Patent number: 7946717
    Abstract: A projection optical system including a first optical system configured to form a second image conjugate to a first image and a second optical system configured to include a reflective optical element which reflects light from the second image and to project a third image conjugate to the second image onto a projection surface is provided, wherein the first optical system has a Petzval sum with a sign opposite to a sign of a Petzval sum of the second optical system.
    Type: Grant
    Filed: September 13, 2007
    Date of Patent: May 24, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Issei Abe, Kazuhiro Fujita, Atsushi Takaura
  • Patent number: 7938545
    Abstract: A projection optical system for use in an image projection apparatus illuminating a lightbulb forming an image in accordance with a modulating signal with illumination light from a light source is disclosed. The projection optical system includes first and second optical systems arranged along an optical path defining an upstream-downstream direction in the order described from upstream to downstream on the downstream side of the lightbulb. The first optical system includes at least one dioptric system and has positive power. The second optical system includes at least one reflecting surface having power and has positive power. The image formed by the lightbulb is formed as an intermediate image in the optical path, and the intermediate image is magnified and projected.
    Type: Grant
    Filed: October 21, 2010
    Date of Patent: May 10, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Atsushi Takaura, Kazuhiro Fujita, Nobuo Sakuma
  • Publication number: 20110102750
    Abstract: Screens are positioned at front areas of respective placing tables which form placing spaces for placing an article. Each of the screens is a transmission-type screen capable of transmitting projection image light projected on a back side of the screen. A first optical system and a second optical system are arranged inside the display shelf. The first optical system leads first partial image light, which is included in projection image light projected from a projector in the display shelf, to the back sides of the screens. And the second optical system leads second partial image light, which is included in the projection image light, to at least one of the placing spaces.
    Type: Application
    Filed: November 4, 2010
    Publication date: May 5, 2011
    Applicant: Toshiba Tec Kabushiki Kaisha
    Inventors: Yoshihiko IKEDA, Hiroki Mochizuki
  • Patent number: 7926952
    Abstract: A rear projection display device (1) includes a screen (10), a projection engine (11) for producing an image light beam, a projection lens (12), and reflectors (13, 14) for projecting the image light beam onto the screen. The projection engine and the projection lens are positioned in rear of the screen within a substantially central portion of the display device. The reflectors are composed of two symmetrically arranged groups of first and second reflectors. The first and second reflectors in each group form a certain angle with each other. The first reflectors divide the image light beam from the projection lens into two image sub-beams, and then reflect them onto the respective second reflectors. The second reflectors reflect the two image sub-beams onto the screen for display a combined single image. By means of the image light beam division and two times of reflection by the reflectors, the depth of the display device is significantly reduced.
    Type: Grant
    Filed: June 13, 2007
    Date of Patent: April 19, 2011
    Assignee: Asia Optical Co., Inc
    Inventor: Hong Wan
  • Patent number: 7922336
    Abstract: A light source device for a display device for projecting an image on a screen is provided, the light source device for display device including a light source unit operable to output light; an image outputting unit operable to output an image by giving an image signal to the light; and a control circuit operable to switch the image output from the image outputting unit between a normal image and a mirror reversed image formed by reversing the normal image right and left by controlling the image signal, such that outputting type is switched between a front projection in which the image is projected onto the screen from a front on the same side as the viewing side, and a rear projection in which the image is projected onto the screen from a rear plane on the opposite side to the viewing side.
    Type: Grant
    Filed: February 28, 2006
    Date of Patent: April 12, 2011
    Assignee: Panasonic Corporation
    Inventors: Toshifumi Yokoyama, Ken'ichi Kasazumi
  • Patent number: 7918565
    Abstract: An expanding chassis for an imaging unit is provided, the expanding chassis for use in imaging systems having a plurality of imaging units arranged in an array. The expanding chassis comprises a rigid frame for housing a light engine and related circuitry, and for mounting a screen on a front surface of the rigid frame for use with the light engine. The expanding chassis further comprises at least one expandable interface pad on at least one side of the rigid frame. The rigid frame and the expandable interface pad have a combined thermal expansion characteristic that provides an overall expansion in the expanding chassis that substantially matches the expansion of the screen.
    Type: Grant
    Filed: July 31, 2008
    Date of Patent: April 5, 2011
    Assignee: Christie Digital Systems USA, Inc.
    Inventors: Bryan Hemphill, Les Hirst, Dan Adema
  • Patent number: 7909471
    Abstract: A rear projection type display apparatus, comprises an output unit that modulates a light from a light source to output a projection light; an image formation unit that has one or more optical elements, and that subjects the projection light that is output from the output unit to form an image; a Fresnel screen that displays the projection light that is subjected to form an image; a light detection unit that is disposed at a position on which a reflected light from the Fresnel screen focuses, and that detects rays; and a control unit that controls an output of the projection light by the output unit based on the rays that are detected at the light detection unit.
    Type: Grant
    Filed: May 4, 2007
    Date of Patent: March 22, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventor: Minoru Noji
  • Patent number: 7896504
    Abstract: A projection module intended to project an image on a screen defining a specified projection plane is disclosed. The module includes an objective, for emitting an imaging beam; a curved mirror; and at least two deflection surfaces for deflecting the imaging beam, the deflection surfaces being placed in the path of the imaging beam between the objective and the curved mirror.
    Type: Grant
    Filed: March 30, 2005
    Date of Patent: March 1, 2011
    Assignee: Thomson Licensing
    Inventors: Jean-Jacques Sacre, Pascal Benoit
  • Patent number: 7883219
    Abstract: System and method for thin projection display systems. An embodiment comprises a light source, an array of light modulators optically coupled to the light source, a lensed mirror optically coupled to the array, and a controller electronically coupled to the array and to the light source. The array produces images on a display plane by modulating light from the light source based on image data and the controller provides light commands to the light source and load image data into the array. The lensed mirror reflects modulated light from the array onto the display plane, the lensed mirror comprising a refractive portion and a reflective portion. The refractive portion of the lensed mirror helps to increase the light bending capability to help reduce the overall thickness of a projection display system.
    Type: Grant
    Filed: December 27, 2006
    Date of Patent: February 8, 2011
    Assignee: Texas Instruments Incorporated
    Inventors: John David Jackson, Steven Edward Smith, Duane Scott Dewald