Reflector Between Lamp And Screen Patents (Class 353/37)
  • Patent number: 9958676
    Abstract: A projector device is provided. The projector device includes a projector unit, an optical beam splitting module and a first image forming element. The projector unit forms a beam projecting image. The horizontal projection width of the beam projecting image is smaller than the vertical projection width of the beam projecting image. The optical beam splitting module projects one or multiple projection sub-images according to the beam projecting image. The projection sub-images are projected to the first image forming element to form one or multiple projection images. Thus, the projector device obtains multiple projection images from a single image source, and the placement of the image forming elements in the projector unit may be adjusted to obtain the projection images with the best image ratios and the best resolutions. The projector device may be suitable for a head up display.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: May 1, 2018
    Assignee: Industrial Technology Research Institute
    Inventors: Ming-Chieh Chou, Kuo-Chih Wang, Han-Wei Su, Yao-Hui Lee, Yi-Cheng Chen
  • Patent number: 9910346
    Abstract: An illumination system including a first laser light source, a diffusion sheet and a light integration rod is provided. The first laser light source is configured to generate a first laser beam. The diffusion sheet is located on a transmission path of the first laser beam. The light integration rod has a light entering surface and a light exiting surface. The diffusion sheet is located between the first laser light source and the light integration rod. The first laser beam from the diffusion sheet enters the light integration rod through the light entering surface and exits the light integration rod through the light exiting surface. The light integration rod is adapted to convert the first laser beam to an illumination beam. The area of the light entering surface is larger than the area of the light exiting surface. A projection apparatus is also provided.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: March 6, 2018
    Assignee: Coretronic Corporation
    Inventors: Kuan-Ta Huang, Ming-Tsung Weng, Chien-Chung Liao
  • Patent number: 9869925
    Abstract: A light source device includes: a plurality of light-emitting elements including a first light-emitting element and a second light-emitting element each of which emits light in a first direction; and a base material including a base portion that extends in a second direction inclined with respect to the first direction. The plurality of light-emitting elements are disposed along the second direction on one side of the base portion.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: January 16, 2018
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Chigusa Takagi
  • Patent number: 9374566
    Abstract: An optical micro-projection system comprising the following components: at least one laser light source (200, 400, 402, 600); at least one movable mirror (102, 103, 203) for deviating light from said light source to allow generation of images on a projection surface (104, 301, 303, 306, 603); a self mixing module for measurement of the distance (604) between the projection source and a projection surface, said self mixing module comprising:—at least one photodiode (401, 601) for monitoring the light emission power of the laser light source;—an optical power variation counter for counting optical power variations (605); successive displacements of said mirror allowing the self mixing module providing successive projection distance measurements of a plurality of points of said projection surface. A projection method for optical micro-projection system and a distance measurement method are also provided.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: June 21, 2016
    Assignee: INTEL CORPORATION
    Inventors: Lucio Kilcher, Faouzi Khechana
  • Patent number: 9069238
    Abstract: Disclosed is an image displaying apparatus including an image displaying element configured to form an image to be projected and a projection optical system having a positive refractive power and configured to project the image to be projected onto a screen, wherein the projection optical system includes a lens optical system and a mirror optical system, the lens optical system including plural lens groups, the mirror optical system including a first mirror and a second mirror, the second mirror being a concave mirror, wherein an intermediate image of a pixel of the image displaying element is formed between the image displaying element and the second mirror, and wherein the first mirror is held to be capable of adjusting a position thereof.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: June 30, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Kiichiro Nishina, Makoto Hirakawa, Hibiki Tatsuno, Yasuyuki Shibayama, Takanobu Osaka
  • Patent number: 9046750
    Abstract: A light source apparatus includes excitation light sources, a phosphor unit, a dichroic mirror that reflects excitation light supplied from the excitation light sources toward the phosphor unit and that transmits fluorescent light emitted from the phosphor unit, and a collimator lens that is provided between the dichroic mirror and the phosphor unit and whose focal distance varies according to the wavelength. The phosphor unit is arranged at a position determined by the focal distance of the collimator lens for the fluorescent wavelength. The collimator lens includes low-dispersion lenses and a high-dispersion lens.
    Type: Grant
    Filed: November 17, 2010
    Date of Patent: June 2, 2015
    Assignee: NEC Display Solutions, Ltd.
    Inventor: Masateru Matsubara
  • Publication number: 20150146173
    Abstract: A light source system includes a laser module and at least one light coupling module. The laser module includes a plurality of laser sources, each of which provides a light beam. The light coupling module has a light incident surface, a plurality of total reflection surfaces and a light output surface. The light incident surface includes a plurality of light incident zones, and the light incident zones are disposed corresponding to the laser sources, respectively. The total reflection surfaces are disposed corresponding to the light incident zones, respectively. The projected areas of the total reflection surfaces on the light output surface have no overlap with each other.
    Type: Application
    Filed: May 7, 2014
    Publication date: May 28, 2015
    Applicant: DELTA ELECTRONICS, INC.
    Inventor: June-Jei HUANG
  • Patent number: 9039185
    Abstract: A LCOS projection system includes an illumination device, a LCOS microdisplay element, a polarization beam splitter, an optical projection lens, and a beam recycling module. A first portion of the lighting beams provided by the illumination device are transmissible through the polarization beam splitter and directed to the LCOS microdisplay element. A second portion of the lighting beams provided by the illumination device and from the polarization beam splitter are introduced into the beam recycling module. By the beam recycling module, a polarization state of the second portion of the lighting beams is converted. Consequently, the second portion of the lighting beams in the converted polarization state can also be projected onto the LCOS microdisplay element. The beam recycling module includes a total internal reflection prism, which is arranged in a transmission path of the first portion and the second portion of the lighting beams.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: May 26, 2015
    Assignee: MIN AIK TECHNOLOGY CO., LTD.
    Inventors: Shi-Hwa Huang, Mao-Sheng Hsu, Ming-Hsien Tsai, Chi-Wei Chen
  • Patent number: 9028074
    Abstract: An image display system includes a screen capable of switching a state thereof between a scatter state in which the screen scatters light and a transmission state in which the screen transmits light by changing the magnitude of a voltage applied to the screen, a projector that projects video image light modulated in accordance with an image signal on the screen to display an image on the screen, and a controller that controls operation of driving the screen and the projector, wherein the controller instructs the projector to project the video image light on the screen that operates in the scatter state and instructs the screen to change the degree of light scattering in the scatter state in accordance with a luminance level of the image displayed on the screen.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: May 12, 2015
    Assignee: Seiko Epson Corporation
    Inventor: Taisuke Yamauchi
  • Publication number: 20150124226
    Abstract: A projection system includes a projection lens, an image modulation device, a light-guiding rod and two light sources. The light-guiding rod is defined with an axial direction and has a first end and a second end. The first end has a transmission surface and a reflection surface. The ratios of the widths of the transmission and reflection surfaces to the panel width of the image modulation device are 0.13˜0.35. The lights of the first and second light sources are incident into the light-guiding rod through the transmission surface and onto a first side surface and reflected into the light-guiding rod through the first reflection surface, respectively. The light-guiding rod homogenizes the incident lights and transmits the homogenized light to the image modulation device through the second end thereby forming an image light. The projection lens projects the image light.
    Type: Application
    Filed: October 30, 2014
    Publication date: May 7, 2015
    Inventors: MING-KUEN LIN, TSUNG-HSUN WU
  • Patent number: 9010943
    Abstract: A display device includes: a display portion having a screen that can display an image; and an image forming substrate formed into a plate, wherein the image forming substrate are configured to be switchable between a first state where the screen is arranged to be inclined with respect to the first main surface such that light from the screen enters the image forming substrate from the first main surface side and forms the image on the second main surface side and a second state where the display portion and the image forming substrate are aligned in the thickness direction and are arranged along each other.
    Type: Grant
    Filed: June 15, 2011
    Date of Patent: April 21, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takafumi Shimatani, Kentarou Imamura, Shigeto Yoshida
  • 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: 9004701
    Abstract: A light source unit may include a cooling device; a luminescent substance; an excitation radiation source having a laser source; and an optical element arranged between the radiation source and the substance; wherein the cooling device constitutes a heat sink, wherein the substance is linked thermally to the heat sink; and wherein the optical element is designed as an integrating optical element and is coupled between the radiation source and the substance in such a manner that a part of the radiation emitted by the radiation source, entering in an acceptance angle range of the integrating optical element, is subjected to an internal reflection in the optical element before it exits the optical element and strikes the substance, and that a part of the radiation emitted by the substance enters the optical element and exits the optical element as effective radiation.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: April 14, 2015
    Assignee: Osram AG
    Inventors: Dirk Berben, Mathias Bruemmer, Ulrich Hartwig, Nico Morgenbrod, Matthias Morkel
  • Patent number: 8998421
    Abstract: A projector includes a solid-state light source that emits linearly polarized light, a birefringence element that converts the linearly polarized light emitted from the solid-state light source into circularly or elliptically polarized light, a diffusion element that diffuses the light having exited from the birefringence element, and a polarization conversion element that separates the diffused light having exited from the diffusion element into first polarized light polarized in a first polarization direction and second polarized light polarized in a second polarization direction, converts the polarization direction of the first polarized light into the second polarization direction, and outputs the resultant first and second polarized light.
    Type: Grant
    Filed: February 25, 2013
    Date of Patent: April 7, 2015
    Assignee: Seiko Epson Corporation
    Inventors: Koichi Akiyama, Takayuki Matsubara
  • Patent number: 8985788
    Abstract: A support stand made of sheet metal is cooperated with an optical module and a reflective module. The support stand includes a base and a back frame. The optical module is disposed on the base. To enhance its structural rigidity, the base substantially has a “” or inverted “U” shape as viewed from an optical axis. The back frame is connected with the base, and the reflective module is disposed on the back frame. An optical apparatus with the above support stand is also disclosed.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: March 24, 2015
    Assignee: Delta Electronics, Inc.
    Inventors: Zhong-Ren Zhu, Mao-Shan Hsu
  • 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: 8979283
    Abstract: An optical apparatus includes a support stand, an optical module, a reflective module, at least a first adjusting unit and at least a second adjusting unit. The support stand has a base and a back frame. The back frame is connected with the base and formed an inclination angle with the base. The optical module is disposed on the base. The reflective module is disposed on the back frame. The first adjusting unit is connected with the back frame and the base. The first adjusting unit moves the back frame so as to adjust the inclination angle. The second adjusting unit is disposed at the back frame and contacts against the reflective module. The second adjusting unit moves the reflective module so as to adjust a swinging angle of the reflective module.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: March 17, 2015
    Assignee: Delta Electronics, Inc.
    Inventors: Zhong-Ren Zhu, Mao-Shan Hsu
  • Patent number: 8967812
    Abstract: A projection optical system substantially consists of a first optical system composed of a plurality of lenses and a second optical system composed of one reflection mirror having a convex aspherical surface arranged in this order from the reduction side and is configured, when an air space between the first optical system and the second optical system is taken as T12 and a displacement in a direction of the optical axial from a position of maximum effective height on the magnification side lens surface of the lens disposed on the most magnification side in the first optical system to the vertex of the lens surface is taken as Zf, to satisfy a conditional expression (1): 0.1<Zf/T12<1.0, in which an image formed on a conjugate plane on the reduction side is magnified and projected onto a conjugate plane on the magnification side.
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: March 3, 2015
    Assignee: FUJIFILM Corporation
    Inventor: Masaru Amano
  • Patent number: 8970655
    Abstract: A videoconferencing unit for enhancing direct eye-contact between participants can include a curved fully reflective mirror to reflect the image of the near end to a camera. The curved mirror can be placed in front of the display screen near a location where images of faces/eyes of far end participants are to appear. In another example, the videoconferencing unit can include a disintegrated camera configuration that provides an air gap between a front lens element and a rear lens element. The front lens element can be located behind an aperture within the display screen. The air gap can provide an unobstructed path to light from projectors and therefore avoid any undesirable shadows from appearing on the display screen. In another example, the videoconferencing unit can include a combination of the disintegrated camera configuration and mirrors for providing direct eye contact videoconferencing.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: March 3, 2015
    Assignee: Polycom, Inc.
    Inventors: Gopal Paripally, Craig Clapp, Tony Pham
  • Patent number: 8960918
    Abstract: A light source system for a stereoscopic projection apparatus is provided. The light source system has a light source module, a first lens unit, a light splitting element, a color wheel module and a light integration element. The light source module provides a light beam, which is transferred by the first lens unit to the light splitting element. Then, the light beam is split by the light splitting element into a first light beam with a first bandwidth and a second light beam with a second bandwidth. The first and the second light beams are then received and transformed by the color wheel into a third light beam and a fourth light beam which are then transmitted to the light integration element. With the above arrangement, the light source system can be applied on a projection apparatus to provide a stereoscopic image.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: February 24, 2015
    Assignee: Delta Electronics, Inc.
    Inventor: Junejei Huang
  • Publication number: 20150049310
    Abstract: The invention pertains to a projector comprising an optical engine, a projection lens, a means for light deviation, and an afocal lens system, wherein the projector has a total throw ratio between 0.7 and 0.8. Such a projector can be used to build a very compact and cost-effective back-projection system. The invention also pertains to a projection assembly comprising such a projector, followed by a means for light gradation and a front-surface mirror. The invention also pertains to a display system comprising at least one such projection and a display screen.
    Type: Application
    Filed: August 13, 2014
    Publication date: February 19, 2015
    Inventors: Koenraad VERMEIRSCH, Rik DEFEVER, Peter GERETS
  • 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: 8950868
    Abstract: The head-up display device sequentially displays a virtual image (51V) of a guide light from one end of a reflector (30) side, in the back inside of a virtual image (83V) of an opening bezel formed into a square frame displayed along an outer edge of a projection area (71) of a window shield, and further displays a virtual image (20V) of display information in the back thereof. The amount of travel of the virtual images (51V) of the guide light when the reflector provided in the head-up display device rotates is smaller than the amount of travel of the virtual image (20V) of the display information. Therefore, even if the virtual image (20V) of the display information falls outside the projection area, the virtual images (51V) of the guide light remain in the projection area, and are displayed.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: February 10, 2015
    Assignee: Yazaki Corporation
    Inventors: Kunimitsu Aoki, Nobuyuki Takahashi
  • Patent number: 8931906
    Abstract: A light emitting unit array including a plurality of micro-light emitting diodes (?-LEDs) is provided. The micro-light emitting diodes are arranged in an array on a substrate, and each of the micro-light emitting diodes includes a reflection layer, a light emitting structure, and a light collimation structure. The light emitting structure is disposed on the reflection layer, and includes a first type doped semiconductor layer, an active layer, and a second type doped semiconductor layer that are stacked sequentially. At least a portion of the first type doped semiconductor layer, the active layer, and the second type doped semiconductor layer are sandwiched between the reflection layer and the light collimation structure.
    Type: Grant
    Filed: August 26, 2011
    Date of Patent: January 13, 2015
    Assignee: Industrial Technology Research Institute
    Inventors: Chen-Yang Huang, Chia-Hsin Chao, Wen-Yung Yeh
  • Patent number: 8919968
    Abstract: The invention provides a light uniform device and a digital light processing (DLP) projection system applying the said light uniform device. The light uniform device comprises a light incident surface, a light emergent surface and a light uniform portion defined therebetween. The light incident surface and the light emergent surface have a first contour and a second contour, respectively. And a first projection image of the second contour that is projected onto a projection plane forms a rotational angle about a longitudinal axial direction corresponding to a second projection image of the first contour projected onto the projection plane. Thereby, the light sources may simply be disposed in the projection system to provide uniform light beams that entirely cover the DMD (digital micromirror device) after being uniformed by the light uniform device. Neither of the light sources need to be inclined following with the DMD, nor is additional relay lens needed in imaging.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: December 30, 2014
    Assignee: Delta Electronics, Inc.
    Inventors: Ching-Wen Chou, Douglas M. Boudon, Tom Haven, Rolf Vatne
  • Patent number: 8905555
    Abstract: An image projection apparatus is provided, which includes an illumination unit which generates illumination light, a first prism which receives the illumination light from the illumination unit and performs total reflection of the illumination light, a reflection mirror which receives the illumination light from the first prism and reflects the illumination light, an image forming unit which forms an image from the illumination light that is reflected from the reflection mirror, and a second prism which performs total reflection of the image that is formed by the image forming unit toward a screen.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: December 9, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Wook-jae Jeon, Jong-hoi Kim
  • Patent number: 8905548
    Abstract: An image projector includes a light source for displaying light and a diffusing screen coupled to an in-plane vibrator. The diffusing screen is positioned to receive the display light from the light source and generate phase-modulated display light. The image projector also includes a collimating element positioned to receive the phase-modulated display light. The image projector further includes a display panel positioned to receive the phase-modulated display light after being collimated by the collimating element. The display panel is configured to generate a projectable image using the phase-modulated display light.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: December 9, 2014
    Assignee: OmniVision Technologies, Inc.
    Inventor: Chun-Sheng Fan
  • 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: 8882275
    Abstract: In a light source device, in each division of an image frame, two or more of the color lights X, Y and Z (e.g., red, green and blue) can be projected simultaneously. Each of the color lights X, Y and Z is divided into two in terms of time so that synthesized light of one group of division color lights enters a first spatial modulation element. Synthesized light of another group of division color lights enters a second spatial modulation element, whereby gradation of each color light in each of the first and second spatial modulation elements is controlled.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: November 11, 2014
    Assignee: Ushio Denki Kabushiki Kaisha
    Inventors: Akihiko Sugitani, Kiyoyuki Kabuki, Yoshihiro Horikawa, Yoshio Okazaki
  • 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: 8870390
    Abstract: A low Z-height projection system includes a display panel for displaying a grating pattern that has gratings extended in a first direction. A projection lens system is also included and projects the grating pattern displayed on the display panel onto a surface. The projection lens system is a truncated circular lens system that has a first lens width in the first direction and a second lens width in a second direction. The first lens width is less than the second lens width. The first and second directions are orthogonal.
    Type: Grant
    Filed: September 11, 2012
    Date of Patent: October 28, 2014
    Assignee: OmniVision Technologies, Inc.
    Inventor: Iain Davidson
  • Patent number: 8864317
    Abstract: A projection display satisfies formulas {(4FR?)/(W?TphR)}?0.015 and W??0.5, where: F is an F-number of a projection lens; W? is a diagonal size (inch number) of a light modulation element; ph is a pixel count in one side direction of the light modulation element; T is a throw ratio of the projection display (=a projection distance s/a distance L in the one side direction of a projected image on a projection plane); R is a radius of an exit pupil of the projection lens; I is an integrated light quantity obtained by, in a light quantity distribution in the exit pupil, radially integrating the light quantity up to the radius R; and I?(=I/2) is an integrated light quantity obtained by, in the light quantity distribution in the exit pupil, radially integrating the light quantity up to a predetermined radius R? about barycenter of the light quantity distribution.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: October 21, 2014
    Assignee: Sony Corporation
    Inventor: Toshifumi Yasui
  • Patent number: 8866875
    Abstract: Embodiments of the present invention disclose a method and an apparatus for controlling a conference place environment in video communication, in which, the method for controlling a video communication conference place environment includes: generating illumination feedback information indicating an illumination effect of a video communication conference place, in which the illumination feedback information comprises: a parameter indicating an illumination flaw or a parameter indicating correction of the illumination flaw; and outputting the illumination feedback information, so that a lighting controlling device in the video communication conference place controls lighting in the video communication conference place according to the illumination feedback information. By use of technical solutions provided by the embodiments of the present invention, a conference place environment in video communication is able to be remotely controlled.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: October 21, 2014
    Assignee: Huawei Device Co., Ltd.
    Inventor: Haiyao Yang
  • Patent number: 8864319
    Abstract: An imaging optical system includes a lens unit that includes a plurality of optical elements, and an optical path combining portion that includes a flat plate disposed so as to be inclined with respect to an optical axis of the lens unit, and the lens unit includes a correction portion that has a shape asymmetric with respect to the optical axis in a cross section that is parallel to both a normal of the flat plate and the optical axis.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: October 21, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kazuhiro Inoko
  • Patent number: 8840255
    Abstract: A scanning laser projector includes a scanning mirror that moves in a sinusoidal motion on at least one axis. Pixels are displayed by modulating a laser beam that is reflected by the scanning mirror. Pixels are generated using light pulses of different duty cycles based on the position and/or angular velocity of the laser beam.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: September 23, 2014
    Assignee: Microvision, Inc.
    Inventor: Robert James Jackson
  • Patent number: 8827464
    Abstract: A projection display device includes: a light source unit including light sources emitting light in a plurality of colors, condenser lenses and a color combining optical element; a total reflection prism that totally reflects a combined light flux from the color combining optical element so as to be guided to an image forming unit; and a projection lens. At least one of; an entry surface of the color combining optical element through which substantially parallel light fluxes from the condenser lenses enter, an exit surface of the color combining optical element through which the combined light flux exists, and an entry surface of the total reflection prism through which the combined light flux enters, is formed as a free curved surface where a shape of a section of the combined light flux is altered so as to be matched with a shape of an outline of the display area.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: September 9, 2014
    Assignee: Nikon Corporation
    Inventor: Aiko Namikawa
  • Patent number: 8820944
    Abstract: A portable image projection device has a housing with first and second members pivotable between device folded and unfolded positions. First lens optics mounted within the first member are configured for projecting light modulated by a spatial light modulator along an optical axis through a first aperture with a first throw ratio with the device in the folded position. A second lens optics element movably mounted within the first member is configured for selective movement between positions of non-intersection and intersection with the optical axis. The second lens optics element is configured for cooperating with at least part of the first lens optics for projecting the light modulated by the spatial light modulator along the optical axis through a second aperture with a second throw ratio less than the first throw ratio with the device in the unfolded position.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: September 2, 2014
    Assignee: Texas Instruments Incorporated
    Inventor: Jose S. Vasquez
  • Patent number: 8820946
    Abstract: A projection optical system substantially consists of a first optical system composed of a plurality of lens groups and a second optical system composed of one reflection mirror having a convex aspherical surface arranged in this order from the reduction side, in which all optical surfaces constituting the first and second optical systems are formed so as to have rotationally symmetrical shapes around one common axis, the projection optical system is configured such that focus adjustment is performed by individually moving two lens groups in the first optical system along the common axis, and the lens disposed on the most magnification side in the reduction side lens group of the two lens groups is a lens having a convex surface on the magnification side, thereby magnifying and projecting an image formed on a conjugate plane on the reduction side to a conjugate plane on the magnification side.
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: September 2, 2014
    Assignee: Fujifilm Corporation
    Inventor: Masaru Amano
  • Patent number: 8794764
    Abstract: Projection systems and methods for providing stereoscopic images viewed through passive polarizing eyewear. The systems relate to projectors that create left and right eye images simultaneously and often as side-by-side images on the image modulator. The systems act to superimpose the spatially separated images on a projection screen with alternate polarization states. The embodiments are best suited to liquid crystal polarization based projection systems and use advanced polarization control.
    Type: Grant
    Filed: March 25, 2013
    Date of Patent: August 5, 2014
    Assignee: RealD Inc.
    Inventors: Miller H. Schuck, Michael G. Robinson, Douglas J. McKnight, Gary D. Sharp
  • Patent number: 8794772
    Abstract: A proximity projection-type projector includes a housing; a dust-proof cover arranged on a top portion of the housing; and a projection unit arranged within the housing. The projection unit projects projection light though the dust-proof cover on the housing toward a screen disposed outside the housing. An anti-reflection film forms a light incident surface of the dust-proof cover.
    Type: Grant
    Filed: April 8, 2013
    Date of Patent: August 5, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Eiji Morikuni, Nobutaka Minefuji
  • Patent number: 8757809
    Abstract: An illumination device comprising a first light source generating first light beam having a first spectral distribution and a second light source generating a second light beam having a second spectral distribution. A first dichroic reflector is positioned in the first light beam and transmits a part of the first light beam and reflects a part of the second light beam. The first and second light beam propagates initially primarily in a first direction along an optical axis and reflecting means reflects the second light beam towards the dichroic reflector. The light sources, the dichroic reflector and reflecting means are mutually arranged such that the second light beam propagates primarily in a second direction substantially opposite the first direction and towards the first light source after being reflected by the reflecting means and such that the second light beam propagates substantial in the first direction after being reflected by the dichroic reflector.
    Type: Grant
    Filed: July 5, 2010
    Date of Patent: June 24, 2014
    Assignee: Martin Professional A/S
    Inventor: Dennis Thykjær Jørgensen
  • 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: 8746892
    Abstract: An illuminating optical system includes: a substantially rectangular-shaped light source that includes a light emitting surface with a split pattern formed thereat by a splitting line, the splitting line extending along a predetermined direction and splitting the light emitting surface into a plurality of separate areas; an illumination-target member that includes a rectangular radiation-target area; and an optical member in that condenses light departing the light emitting surface and radiates the condensed light toward the radiation-target area, wherein: an extent of uneven illumination attributable to an image of the split pattern at the light emitting surface of the light source, formed at the illumination-target member, is reduced.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: June 10, 2014
    Assignee: Nikon Corporation
    Inventor: Takao Goto
  • 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: 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: 8721091
    Abstract: An optical system having a plane anisotropic retroreflector portion which specularly reflects radiation components in a first plane of incidence, but retroreflects radiation components in a second plane of incidence, a first imaging portion which produces on the retroreflector portion a line-shaped intermediate image of an object point in an object plane in a specified position relative to the system, the image extending along a line in the second plane of incidence, and a second imaging portion by means of which the line-shaped intermediate image is imaged into an image point.
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: May 13, 2014
    Assignee: Giesecke & Devrient GmbH
    Inventor: Bernd Wunderer
  • Publication number: 20140125957
    Abstract: A light field display apparatus includes a plurality of projectors to emit rays, and a screen to display the rays emitted by the plurality of projectors. Positions of the plurality of projectors may be controlled so that intervals or angles between the rays displayed on the screen are substantially the same.
    Type: Application
    Filed: April 5, 2013
    Publication date: May 8, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin Ho LEE, Ju Yong PARK, Dong-Kyung NAM, Seo Young CHOI
  • 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