Plural Light Path Projectors Patents (Class 349/8)
  • Patent number: 11468805
    Abstract: A liquid crystal projector includes a red liquid crystal panel, a green liquid crystal panel, a blue liquid crystal panel, a green liquid crystal panel, an optical shift element configured to shift an emission optical path of a synthesized image of each liquid crystal panel, and a control circuit configured to control these. The control circuit controls the optical shift element to set a projection position to a projection position (A) in a subframe f1 and to a projection position (B) in a subframe f2. The control circuit causes a resolution of the liquid crystal panel expressed in the subframes f1 and f2 to be lower than the resolution of the liquid crystal panel expressed in the subframes f1 and f2.
    Type: Grant
    Filed: November 15, 2021
    Date of Patent: October 11, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Toru Aoki
  • Patent number: 11448909
    Abstract: A display device includes a substrate, at least three light emitting elements and a light adjusting layer. The light adjusting layer includes at least one light adjusting structure and is disposed on the light emitting elements. One light adjusting structure is corresponding to the light emitting elements. The display device provides a sum of viewing-angles of a first number of the light emitting elements when the first number of the light emitting elements is turned on, and the display device provides a sum of viewing-angles of a second number of the light emitting elements when the second number of the light emitting elements is turned on. The first number is less than the second number, and the sum of viewing-angles of the first number of the light emitting elements is less than the sum of viewing-angles of the second number of the light emitting elements.
    Type: Grant
    Filed: October 1, 2021
    Date of Patent: September 20, 2022
    Assignee: InnoLux Corporation
    Inventors: Hao-Yu Liou, Chih-Yung Hsieh, Toshihiko Araki, Chung-Kuang Wei, Li-Wei Sung
  • Patent number: 11330234
    Abstract: An electronic device includes a first duct for guiding the air blown out from blowers for cooling a liquid crystal panel mounted on an illumination optical system to the liquid crystal panel, a second duct for guiding the air passing through the liquid crystal panel in the opposite direction of the air blown out from the blowers, a heat sink for removing heat from the air passing through the second duct and a blower holding unit for holding the blowers are provided in a dust-proof case, and the top surface of the blower holding unit, the blower holding unit forms a third duct for guiding the air from which heat has been removed by the heat sink to the air inlet of the blowers that is a space formed along the top surface of the dust-proof case.
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: May 10, 2022
    Assignee: SHARP NEC DISPLAY SOLUTIONS, LTD.
    Inventor: Ryosuke Kawase
  • Patent number: 11320725
    Abstract: A projection type display apparatus which includes an optical system having an adjuster configured to adjust a field curvature of an in-focus plane of a projection image includes at least one processor or circuit configured to execute a plurality of tasks including an acquisition task configured to acquire position information of a predetermined position in an imaging area of an image generator and an optical axis of the optical system, and a control task configured to acquire an adjusting amount of a tilt unit configured to tilt the in-focus plane, using information from the acquisition task, a field curvature amount of the in-focus plane based on a position of the adjuster, and information on a projection target.
    Type: Grant
    Filed: November 10, 2020
    Date of Patent: May 3, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Junichi Tanaka
  • Patent number: 11287736
    Abstract: A compound eye illumination system for an LCD projector includes: an LED light source, an LED collector, a fly-eye lens, an overlapping lens, a focusing lens, an LCD light valve, a field lens, and a projection lens, which are arranged in sequence according to a light travelling direction. The compound eye illumination system further includes: a quarter wave plate and a brightness-enhancing polarizer, which are sequentially arranged between the LED collector and the fly-eye lens according to the light travelling direction. According to the present invention, a polarized light passes through the quarter wave plate twice to complete polarization conversion. As a result, lighting efficiency of the projector is significantly improved and power consumption is saved, which greatly improves the product competitiveness. Moreover, the overall structure is simple, the volume is relatively small, the production is easy, and the price is low.
    Type: Grant
    Filed: December 21, 2020
    Date of Patent: March 29, 2022
    Assignee: NANHUA INTELLIGENT PRECISION MACHINE (SHENZHEN) CO., LTD
    Inventor: Hanwen Guo
  • Patent number: 11169432
    Abstract: An LCD projector optical system includes: an LED light source, a transflective plate, a condensing device, a first focusing lens, a polarization modulation plate, a brightness-increasing polarizing plate, an LCD light valve, a field lens, a reflector, and a projection lens, which are all arranged sequentially along a light travel direction; wherein the transflective plate has a light-transmitting portion and a reflecting portion. Light from the LED light source enters the condensing device from the light-transmitting portion, and then transmitted light and reflected light in illumination light are separated by the brightness-increasing polarizing plate.
    Type: Grant
    Filed: July 13, 2020
    Date of Patent: November 9, 2021
    Assignee: NANHUA INTELLIGENT PRECISION MACHINE (SHENZHEN) CO., LTD.
    Inventor: Hanwen Guo
  • Patent number: 11124121
    Abstract: A vision system for a vehicle includes a forward-viewing camera located behind and viewing through a vehicle windshield, a rearward-viewing camera located at a rear of the vehicle, and a common image processor operable for processing captured image data. A video display screen is located within the interior cabin of the vehicle viewable by a driver of the vehicle. The common image processor utilizes object detection software at least during processing of first image data captured by the forward-viewing camera to detect at least one vehicle present exterior the equipped vehicle. Responsive to the vehicle being shifted into a reverse gear and while the driver is executing a reversing maneuver, video images derived from image data captured by at least the rearward-viewing camera are displayed on the video display screen.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: September 21, 2021
    Assignee: MAGNA ELECTRONICS INC.
    Inventors: Andrew D. Weller, Mark L. Larson, Ian A. McCabe, Niall R. Lynam, Rodney K. Blank, Joseph P. McCaw, John T. Uken
  • Patent number: 11095861
    Abstract: A projector and a method for projecting an image light beam according to an image signal are provided. The method includes: receiving the image signal; decoding the image signal to obtain a metadata of the image signal; determining whether the image signal is a HLG-HDR signal according to the metadata; converting a color space of the image signal from a wider color gamut to a narrower color gamut in response to the image signal is the HLG-HDR signal so as to generate a converted image signal; performing a gamma correction on the converted image signal according to the metadata to generate a corrected image signal; transferring the corrected image signal into an optical signal; providing a light beam; respectively modulating the light beam and a illumination beam according to the optical signal to form an image light beam; and projecting the image light beam.
    Type: Grant
    Filed: April 29, 2020
    Date of Patent: August 17, 2021
    Assignee: Coretronic Corporation
    Inventors: Chih-Ming Wang, Ming-Cheng Lin
  • Patent number: 10986320
    Abstract: A projector and a method for projecting an image light beam according to an image signal are provided. The method includes: receiving the image signal; decoding the image signal to obtain a metadata of the image signal; converting a color space of the image signal from a wider color gamut to a narrower color gamut according to the metadata so as to generate a converted image signal; performing a gamma correction on the converted image signal according to the metadata to generate a corrected image signal; transferring the corrected image signal into an optical signal; providing a light beam; respectively modulating the light beam and a illumination beam according to the optical signal to form an image light beam; and projecting the image light beam.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: April 20, 2021
    Assignee: Coretronic Corporation
    Inventors: Chih-Ming Wang, Ming-Cheng Lin
  • Patent number: 10798346
    Abstract: In described examples, a method includes: receiving an array of image data pixels for display by a spatial light modulator; dividing the array of image data pixels into a plurality of blocks. For the blocks of the plurality of blocks, the method includes: computing a mean value for pixels in the block; computing a variance for pixels in the block; and, in response to the mean value and the variance, retrieving an indicator of a likelihood of a visible artifact for the block; and in response to the retrieved indicator, outputting a signal to selectively increase or reduce a load time of the spatial light modulator for displaying the array of image data pixels.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: October 6, 2020
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Dan Morgan, Jeffrey Matthew Kempf
  • Patent number: 10747043
    Abstract: Projector including a light source device, an image forming device, and a cooling device, image forming device includes a light modulation device having a liquid crystal panel, incident side polarization plate and attachment member, a liquid crystal panel includes a panel main body having a modulation area having a rectangular shape, and a frame, cooling device includes a first circulation device that makes a liquid refrigerant flow through a first flow channel included in frame along one of long sides and short sides in modulation area, the incident side polarization plate has a polarization plate main body and a light transmissive substrate, attachment member includes clamp-holding members adapted to clamp-hold the incident side polarization plate, and a support member, clamp-holding members are disposed at positions corresponding respectively to the long sides, and the support member is connected to the areas respectively along the short sides on the frame surface.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: August 18, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Toshizo Nishi, Tomoaki Miyashita
  • Patent number: 10682824
    Abstract: The wafer-level method for applying N?2 first elements to a first side of a substrate, wherein the substrate has at the first side a first surface including the steps of providing the substrate, wherein at least N barrier members are present at the first side, and wherein each barrier member is associated with one of the first elements. For each of the first elements, the method includes bringing a first amount of a hardenable material in a flowable state in contact with the first surface, the first amount of hardenable material being associated with the first element; controlling a flow of the first amount of hardenable material on the first surface with the associated barrier member; and hardening the first amount of hardenable material to interconnect the first surface and the respective element.
    Type: Grant
    Filed: May 14, 2015
    Date of Patent: June 16, 2020
    Assignee: ams Sensors Singapore Pte. Ltd.
    Inventors: Alexander Bietsch, Michel Barge
  • Patent number: 10663735
    Abstract: A head-mounted display including a transparent display, a main liquid crystal lens and a first liquid crystal lens is provided. The transparent display is configured to emit an image light beam. The main liquid crystal lens is disposed near the transparent display. The transparent display is disposed between the main liquid crystal lens and the first liquid crystal lens. The first liquid crystal lens is configured to receive an ambient light beam. The head-mounted display allows at least a part of the image light beam emitted from the transparent display passing through a pupil by phase modulating of at least a part of the main liquid crystal lens.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: May 26, 2020
    Assignee: Coretronic Corporation
    Inventors: Chih-Hsien Tsai, Chi-Tang Hsieh, Haw-Woei Pan
  • Patent number: 10656508
    Abstract: A projector includes a light source, a light modulation device configured to modulate a light output from the light source, a projection optical device configured to project the light modulated by the light modulation device, a casing containing at least a part of the light modulation device and having an interior filled with a cooling liquid, a circulating device configured to circulate the cooling liquid at least to a light exiting side of a modulation part in the light modulation device, and a control device configured to control an operation of the circulating device. The control device changes an operation level of the circulating device.
    Type: Grant
    Filed: January 29, 2019
    Date of Patent: May 19, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Yoshiyuki Yanagisawa
  • Patent number: 10534112
    Abstract: A microlens array includes N lenses ranging from a 1st lens to an Nth lens and a lens arrangement area. N is a positive integer. The lens arrangement area has the N lenses arranged in array. The lens arrangement area receives light emitted from a light source. An ith (i being 1st to Nth) lens satisfies a conditional expression below: ?20°???20° where ? denotes an angle formed by a main-axis orientation of double refraction and a reference orientation.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: January 14, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Kohji Sakai, Miho Higuchi, Jun Watanabe
  • Patent number: 10488688
    Abstract: A display device includes a liquid crystal display element, a light shielding member, and a heat sink. The liquid crystal display element has a display pixel region. The light shielding member shields regions other than the display pixel region. The liquid crystal display element and the light shielding member are fixed to the heat sink. The light shielding member includes a frame part, an inclined part, and an opening. The frame part is disposed outside the display pixel region. The inclined part is inclined from the frame part toward an outer peripheral portion of the display pixel region. The opening is formed by an end portion of the inclined part on a side of the display pixel region, and formed in a shape corresponding to the display pixel region.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: November 26, 2019
    Assignee: JVC KENWOOD CORPORATION
    Inventor: Tadashi Aizawa
  • Patent number: 10429650
    Abstract: A head-mounted display including a transparent display, a liquid crystal lens and a first Fresnel lens is provided. The transparent display is configured to emit an image light beam. The liquid crystal lens is disposed near the transparent display. The transparent display is disposed between the liquid crystal lens and the first Fresnel lens. The first Fresnel lens is configured to receive an ambient light beam. The head-mounted display allows at least a part of the image light beam emitted from the transparent display passing through a pupil by phase modulating of at least a part of the liquid crystal lens.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: October 1, 2019
    Assignee: Coretronic Corporation
    Inventors: Chih-Hsien Tsai, Chi-Tang Hsieh, Haw-Woei Pan
  • Patent number: 10386654
    Abstract: An ophthalmic lens incorporating an array of microlenses.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: August 20, 2019
    Assignee: Vision Ease, LP
    Inventors: Michael Marshall, José A. Orozco Rodriguez, Richard Blacker
  • Patent number: 10033975
    Abstract: A scanning projector and a method for operating a scanning projector including a light source module including a plurality of color light sources including at least one color light source provided in a plurality, and a scanner configured to execute scanning in the horizontal direction and the vertical direction using light beams emitted from the light source module. Light beams emitted from the plurality of same color light sources are projected on different positions on a screen within one frame and, thus, more rapid and effective scanning may be executed and a high-quality image may be formed.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: July 24, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Jaehyuk Lim, Jaewook Kwon, Woojae Park
  • Patent number: 9979953
    Abstract: The depth of one or more objects within a scene may be determined utilizing system that includes a single light source, a reflector (e.g., an ellipsoidal reflector), a shutter mechanism associated with the light source, and a camera. More particularly, the light source may output light that is directed towards the scene (a first set of light beams) and towards the reflector (a second set of light beams) utilizing the shutter mechanism. The reflector may reflect the second set of light beams towards the scene. The camera may then capture a first image that corresponds to the first set of light beams and a second image that corresponds to the second set of light beams. The depth of a particular one of the objects within the scene may be determined based at least in part on the first image and the second image.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: May 22, 2018
    Assignee: Amazon Technologies, Inc.
    Inventors: Eric G. Marason, Christopher D. Coley, William Thomas Weatherford
  • Patent number: 9933553
    Abstract: Provided are an optical element and an optical device using the optical element to which a manufacturing process for manufacturing a wire-grid structure can be basically applied, and besides, in which a higher polarization contrast ratio than that of a wire-grid element can be obtained. A wobbled wire element in an embodiment has a feature that a periodic structure having a period equal to or larger than a wavelength of an incident light wave is formed in a y direction. In this manner, in a wobbled wire element in a first embodiment, a polarization contrast ratio can be significantly improved.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: April 3, 2018
    Assignee: HITACHI MAXELL, LTD.
    Inventors: Koji Hirata, Hiroyuki Minemura, Yumiko Anzai, Tetsuya Nishida, Jiro Yamamoto, Naoyuki Kofuji, Hidehiro Ikeda, Nobuyuki Kimura
  • Patent number: 9930303
    Abstract: In described examples, a method includes: receiving an array of image data pixels for display by a spatial light modulator; dividing the array of image data pixels into a plurality of blocks. For the blocks of the plurality of blocks, the method includes: computing a mean value for pixels in the block; computing a variance for pixels in the block; and, in response to the mean value and the variance, retrieving an indicator of a likelihood of a visible artifact for the block; and in response to the retrieved indicator, outputting a signal to selectively increase or reduce a load time of the spatial light modulator for displaying the array of image data pixels.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: March 27, 2018
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Dan Morgan, Jeffrey Matthew Kempf
  • Patent number: 9784985
    Abstract: The disclosure generally relates to beamsplitters useful in color combiners, and in particular color combiners useful in small size format projectors such as pocket projectors. The disclosed beamsplitters and color combiners include a tilted dichroic reflective polarizer plate having at least two dichroic reflective polarizers tilted at different angles relative to incident light beams, with light collection optics to combine at least two colors of light.
    Type: Grant
    Filed: October 23, 2012
    Date of Patent: October 10, 2017
    Assignee: 3M Innovative Properties Company
    Inventors: Yarn Chee Poon, Andrew J. Ouderkirk, Philip E. Watson, Xiaohui Cheng, Kim Leong Tan, Stephen J. Willett
  • Patent number: 9772519
    Abstract: A touching display panel and a display device using the same are provided. The touching display panel includes a liquid crystal layer, a first substrate having a hard surface structure, a second substrate, a touch sensor layer, a thin-film transistor layer, and a color filter layer. The first and second substrates are respectively disposed at two sides of the liquid crystal layer. The touch sensor layer is disposed between the first substrate and the liquid crystal layer, and is formed on the first substrate. The thin-film transistor layer and the color filter layer are both disposed between the first substrate and the second substrate. At least one of the thin-film transistor layer and the color filter layer is formed on the first substrate.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: September 26, 2017
    Assignees: INNOCOM TECHNOLOGY (SHENZHEN) CO., LTD., INNOLUX CORPORATION
    Inventors: Chao-Liang Lu, Hsin-Li Chen, Jian-Jhong Fu, Hao-Ching Chien, Tsau-Hua Hsieh, Hung-Yu Chen, Chiu-Lien Yang, Jia-Pang Pang
  • Patent number: 9651417
    Abstract: Mapping apparatus includes a transmitter, which emits a beam comprising pulses of light, and a scanner, which is configured to scan the beam, within a predefined scan range, over a scene. A receiver receives the light reflected from the scene and to generate an output indicative of a time of flight of the pulses to and from points in the scene. A processor is coupled to control the scanner so as to cause the beam to scan over a selected window within the scan range and to process the output of the receiver so as to generate a 3D map of a part of the scene that is within the selected window.
    Type: Grant
    Filed: February 14, 2013
    Date of Patent: May 16, 2017
    Assignee: APPLE INC.
    Inventors: Alexander Shpunt, Raviv Erlich
  • Patent number: 9369658
    Abstract: A method can include determining characteristics of a surface; determining a point of view for an object with respect to the surface; and projecting an adjusted image onto the surface, the adjusted image being adjusted based at least in part on the characteristics of the surface and the point of view for the object with respect to the surface. Various other methods, apparatuses, systems, etc., are also disclosed.
    Type: Grant
    Filed: January 20, 2014
    Date of Patent: June 14, 2016
    Assignee: Lenovo (Singapore) Pte. Ltd.
    Inventors: Aaron Michael Stewart, Howard J. Locker, John Weldon Nicholson, Michaela Rose Case
  • Patent number: 9268073
    Abstract: The present invention provides a counter electrode (13) and an alignment controlling electrode opening (14) directly on a color filter colored layer (12) to produce a liquid crystal display device (1) of a vertical alignment (VA) display mode. The present invention includes no overcoat layer for the color filter colored layer (12), and adjusts the thickness, pigment concentrations and the like for the color filter colored layer (12) to achieve a wide color reproduction range and high alignment stability.
    Type: Grant
    Filed: December 24, 2010
    Date of Patent: February 23, 2016
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Katsuhiro Kikuchi, Takashi Ochi
  • Patent number: 9250468
    Abstract: A display panel and a display unit are provided that allow a high-contrast and a bright image to be obtained. A display panel is composed of a light modulation device. The light modulation device includes: an electrode capable of generating a main electric field in a direction parallel to a plane intersecting with a normal line of a transparent substrate; and a light modulation layer including a bulk and a particulate each having an optical anisotropy. Optical axes AX1 and AX2 of the bulk and the particulate are parallel or substantially parallel to a top surface of the transparent substrate, and may be faced in different directions from each other and may be faced in same or substantially same directions with each other within the plane parallel or substantially parallel to the top surface of the transparent substrate depending on a magnitude of the electric field generated by the electrode.
    Type: Grant
    Filed: October 17, 2011
    Date of Patent: February 2, 2016
    Assignee: Sony Corporation
    Inventors: Shogo Shinkai, Kentaro Okuyama, Tomoaki Suzuki, Akira Ebisui, Yuji Takahashi, Taizo Nishimura
  • Patent number: 9250477
    Abstract: An embodiment of the present disclosure provides an array substrate, and the array substrate including: at least a data line and at least a gate line; and a plurality of pixel units defined by the data line and the gate line. Each of the plurality of pixel units includes a thin film transistor, a first electrode and a second electrode, and the first electrode and the second electrode overlap each other and are insulated from each other and the second electrode is positioned above the first electrode. An alignment film is formed on a surface of the array substrate, a direction of the second electrode and one side of the array substrate form a predetermined angle and a rubbing direction of the alignment film is parallel to the one side of the array substrate.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: February 2, 2016
    Assignee: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Dong Chen, Xue Dong, Cheng Li
  • Patent number: 9201170
    Abstract: A method for producing a polarizing element includes: forming particulate materials containing a metal halide on a glass substrate; forming a protective film that covers the particulate materials in a plasma environment while reducing the metal halide constituting the particulate materials; and stretching the particulate materials by stretching the glass substrate and the protective film at a temperature at which the glass substrate is softened.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: December 1, 2015
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Yoshitomo Kumai
  • Patent number: 9196184
    Abstract: Provided is a method of driving a display panel, including: outputting first data voltages representing a left-eye image or a right-eye image to first signal lines among a plurality of signal lines of the display panel during a first period of a frame for rendering the left-eye or right-eye image of a three-dimensional (3D) image; outputting second data voltages representing the left-eye image or right-eye image for second signals among the plurality of signal lines of the display panel during a second period of the frame for rendering the left-eye or right-eye image of the 3D image; and stopping the data voltages from being outputted to the display panel during a third period of the frame.
    Type: Grant
    Filed: May 17, 2012
    Date of Patent: November 24, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Gyeong-Ub Moon, Hyun-Seok Ko, Jung-Hwan Cho
  • Patent number: 9081242
    Abstract: In one embodiment, a liquid crystal display device includes a first substrate and a second substrate. The first substrate includes a first gate line and a second gate line extending in a first direction, respectively. A first source line and a second source line extend in a second direction orthogonally crossing the first direction. A pixel electrode includes a first main pixel electrode in the shape of a belt located on an edge of the first source line and extending in the second direction, and a second main pixel electrode in the shape of a belt located on an edge of the second source line and extending in the second direction. A second substrate includes a main common electrode located between the first main pixel electrode and the second main pixel electrode and extending in the second direction.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: July 14, 2015
    Assignee: JAPAN DISPLAY INC.
    Inventors: Arihiro Takeda, Jin Hirosawa
  • Patent number: 9041868
    Abstract: The purpose of the present invention is to provide a projection image display device in which all of the multiple light sources to be used are positioned optimally, regardless of the mode of installation of the device. This projection image display device has two illumination optical systems (1, 2) that are each provided with a light source (111, 211), a color separator for separating into three colors of light, a liquid crystal panel (150, 250) for forming an optical image, and a color synthesis prism (160, 260) for color-synthesizing. A polarization beam splitter (3) for synthesis synthesizes an optical image formed by the illumination optical system (1, 2), and projects the same from a projection lens (4). The optical axis (101, 201) of each light source (111, 211) is positioned within the same plane as the optical axis (401) of the projection lens (4), and so as to orthogonally intersect the optical axis (401) of the projection lens.
    Type: Grant
    Filed: February 24, 2012
    Date of Patent: May 26, 2015
    Assignee: HITACHI MAXELL, LTD.
    Inventors: Koji Hirata, Takashi Kakuda, Nobuyuki Kimura
  • Publication number: 20150109538
    Abstract: Since a relay optical system includes double gauss lenses and pairs of meniscus lenses disposed so as to be convex toward the double gauss lenses, it is possible to sufficiently minimize the occurrence of aberration from dimming light valves to color modulation light valves, to maintain an image formation state with high performance, and further to form a favorable image.
    Type: Application
    Filed: October 15, 2014
    Publication date: April 23, 2015
    Inventor: Makoto OTANI
  • Patent number: 9001279
    Abstract: A polarization separation device includes a transmissive substrate formed of crystalline material having a birefringent property and an optical rotatory property, and a polarization separation portion that is provided on an incidence-side surface of the transmissive substrate and transmits P-polarized light and reflects S-polarized light. A reflective element, which reflects the S-polarized light reflected by the polarization separation portion, is disposed substantially in parallel with the transmissive substrate. A phase difference plate is disposed at an emission-side of the transmissive substrate.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: April 7, 2015
    Assignee: Seiko Epson Corporation
    Inventors: Shuho Kobayashi, Mitsuru Miyabara, Makoto Sakurai
  • Patent number: 8982289
    Abstract: A projection display device includes a first display panel (23a), a second display panel (23b), a PBS (Polarization Beam Splitter) (22) with a first surface (22a) and a second surface (22b) opposite each other, a light recycling device (25a, 25b and 23b), and a projection lens (24). The PBS (22) transmits a first type parallel polarized light and reflects a second type parallel polarized light. The light recycling device (25a, 25b and 23b) transforms the first type parallel polarized light transmitted by the PBS (22) into the second type parallel polarized light which carries a second image information, then reversely transmits the second type parallel polarized light to the second surface (22b) of the PBS (22). The projection display device improves the light utilization efficiency and can be used for 3D display.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: March 17, 2015
    Assignee: Lexvu Opto Microelectronics Technology (Shanghai) Ltd
    Inventors: Cheng Huang, Lei Zhang, Deming Tang
  • Patent number: 8950869
    Abstract: A method for projecting a three-dimensional image, that includes providing a first light source and a second light source. A polarizing beam splitter (PBS) is disposed adjacent the first light source and the second light source. An imaging device is adjacent the PBS. A polarization flipping element is disposed adjacent the PBS opposite the imaging device, and a mirror is disposed adjacent the polarization flipping element. A first light is emitted from the first light source. The first light is polarized such that it reflects through the PBS to a polarization flipping element. The first light passes through the polarization flipping element twice such that it will reach the surface of the imaging device. The second light is emitted from the second light source after the first light is emitted. The second light is polarized such that the light passes through the PBS to the imaging device.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: February 10, 2015
    Assignee: International Business Machines Corporation
    Inventor: Casimer M. DeCusatis
  • Patent number: 8953103
    Abstract: The device comprises a projection display module is coupled to the control IC for the data projection. The projection display module includes three liquid crystal panels that perform image displays in red, green, and blue, respectively; light emitting sources are employed and positioned in correspondence with the liquid crystal panels, respectively. A prism is used for each display color combination, wherein the liquid crystal panels and the light emitting sources are positioned on the light-incidence side of the side surfaces of the prism. A projection lens is provided on the light emission side of the prism.
    Type: Grant
    Filed: January 31, 2007
    Date of Patent: February 10, 2015
    Assignee: Bascule Development AG LLC
    Inventors: Kuo-Ching Chiang, Chi Wen Liu, Ching Yu Chang
  • Patent number: 8922722
    Abstract: A projection apparatus for providing multiple viewing angle images is disclosed. The projection apparatus includes a light source module, a polarizing light splitting element, a first and a second reflective light valve and a light combining element. The polarizing light splitting element has a light incident surface, a first light exiting surface and a second light exiting surface. The light incident surface optically couples with the light source module, while the first and the second light exiting surfaces optically couple with the first and the second reflective light valves respectively. The light combining element optically couples to the reflective light valves. Further, the light source module sequentially provides a first light beam and a second light beam. The light beams are transferred via the polarizing light splitting element, the reflective light valves and the light combining element to provide at least four viewing angle images to the viewers.
    Type: Grant
    Filed: August 16, 2012
    Date of Patent: December 30, 2014
    Assignee: Delta Electronics, Inc.
    Inventor: Junejei Huang
  • Patent number: 8917361
    Abstract: A touching display panel and a display device using the same are provided. The touching display panel includes a liquid crystal layer, a first substrate having a hard surface structure, a second substrate, a touch sensor layer, a thin-film transistor layer, and a color filter layer. The first and second substrates are respectively disposed at two sides of the liquid crystal layer. The touch sensor layer is disposed between the first substrate and the liquid crystal layer, and is formed on the first substrate. The thin-film transistor layer and the color filter layer are both disposed between the first substrate and the second substrate. At least one of the thin-film transistor layer and the color filter layer is formed on the first substrate.
    Type: Grant
    Filed: April 15, 2014
    Date of Patent: December 23, 2014
    Assignee: Innolux Corporation
    Inventors: Chao-Liang Lu, Hsin-Li Chen, Jian-Jhong Fu, Hao-Ching Chien, Tsau-Hua Hsieh, Hung-Yu Chien, Chiu-Lien Yang, Jia-Pang Pang
  • 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: 8827457
    Abstract: A projector includes: a plurality of reflection-type light modulation device which modulate a plurality of color light fluxes according to image information; a plurality of reflection-type polarizing plate; a color combining device; a projection lens that projects the combined color light from the color combining device; and a light-transmissive member that transmits a color light flux incident thereon, wherein the light-transmissive member is disposed only in an optical path between a first reflection-type polarizing plate, which is one of the plurality of reflection-type polarizing plate, and the color combining device.
    Type: Grant
    Filed: January 19, 2011
    Date of Patent: September 9, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Eiji Yokoyama, Shinichi Wakabayashi
  • Patent number: 8827459
    Abstract: An optical unit includes a light source that emits light to be projected onto a screen, one or a plurality of optical elements that controls a spread of a beam of light from the light source to the screen, a combining element that combines the light emitted from the light source, and a scanning element. The light source outputs an optical beam that will generate an elliptically shaped beam spot on the screen, the beam spot having a major axis substantially perpendicular to a scanning direction, and the light source is driven with pulse width modulation (PWM) so that one driven pulse corresponds to one beam spot on the screen.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: September 9, 2014
    Assignee: Hitachi Consumer Electronics Co., Ltd.
    Inventors: Mayumi Nagayoshi, Satoshi Ouchi, Tadayoshi Kosaka, Tomoki Kobori, Yoshiho Seo
  • Patent number: 8820937
    Abstract: An optical polarization state modulator assembly for use in a stereoscopic three-dimensional image projection system includes a spatial light modulator, a light source emitting multiple wavelength components of light for incidence on the spatial light modulator, and a projection lens. A polarization converter system cooperates with the spatial light modulator to produce in alternating sequence polarized light carrying first and second perspective view images of a scene in different ones of first and second subframes. A polarization modulator, in response to first and second drive signals, imparts to, respectively, the image-carrying polarized light a first output polarization state during the first subframe and to the image-carrying polarized light a second output polarization state during the second subframe. The image-carrying polarized light in the first and second output polarization states propagates through the projection lens for transmission to an observer.
    Type: Grant
    Filed: February 23, 2012
    Date of Patent: September 2, 2014
    Assignee: LC-TEC Displays AB
    Inventors: Jesper Osterman, Terry J. Scheffer
  • Patent number: 8823885
    Abstract: A projector includes: an illuminator that outputs illumination light; a light modulator including a liquid crystal panel and a structural birefringent polarization separation element having a polarization separation surface inclined away from a central axis of the illumination light, the light modulator modulating the illumination light from the illuminator; and a projection system that projects the light modulated by the light modulator, wherein the illumination light outputted from the illuminator has an angular distribution in a first direction, which is perpendicular to the central axis of the illumination light, smaller than the angular distribution in a second direction, which is perpendicular to the first direction and the central axis of the illumination light, and the polarization separation surface of the structural birefringent polarization separation element has a structure that is not periodic along the first direction but is periodic along the second direction.
    Type: Grant
    Filed: March 4, 2011
    Date of Patent: September 2, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Tomoharu Masuda, Takashi Endo
  • Patent number: 8823886
    Abstract: A lighting device includes a first light source, a second light source of a light-emitting surface area larger than that of the first light source, first light-converging optics configured to converge light from the first light source into a first light beam, second light-converging optics configured to converge light from the second light source into a second light beam, and an illumination optical system configured to make the first light beam and the second light beam into illumination light, with a f-number of the illumination optical system for the second light beam being lower than a f-number of the illumination optical system for the first light beam.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: September 2, 2014
    Assignee: Panasonic Corporation
    Inventor: Takaaki Tanaka
  • Patent number: 8810740
    Abstract: An illumination optical system includes a two-dimensional laser-array light source including a plurality of laser light sources arranged in a two-dimensional array on a plane; an integrator optical system configured to superpose incident light and emit the light to an irradiated surface; a plurality of first lenses disposed parallel to the plane and configured to superpose beams from the two-dimensional laser-array light source in a first axis direction and emit the beams to the integrator optical system while limiting a divergence angle in the first axis direction of the two-dimensional array; and a plurality of second lenses disposed rearward of the first lenses and configured to superpose the beams from the two-dimensional laser-array light source in a second axis direction orthogonal to the first axis direction and emit the beams to the integrator optical system while limiting a divergence angle in the second axis direction.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: August 19, 2014
    Assignee: Sony Corporation
    Inventors: Iori Taketsu, Koji Kita, Tomoki Ono, Tetsuya Kita
  • Patent number: 8757806
    Abstract: Proposed are various embodiments of projection systems that generally provide stereoscopic images. The projection systems act to split a spatially separated image in a stereoscopic image frame and superimpose the left- and right-eye images on a projection screen with orthogonal polarization states. The embodiments are generally well suited to liquid crystal polarization based projection systems and may use advanced polarization control.
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: June 24, 2014
    Assignee: RealD Inc.
    Inventors: Miller H. Schuck, Michael G. Robinson, Douglas J. McKnight, Gary D. Sharp
  • Patent number: 8749721
    Abstract: A touching display panel and a display device using the same are provided. The touching display panel includes a liquid crystal layer, a first substrate having a hard surface structure, a second substrate, a touch sensor layer, a thin-film transistor layer, and a color filter layer. The first and second substrates are respectively disposed at two sides of the liquid crystal layer. The touch sensor layer is disposed between the first substrate and the liquid crystal layer, and is formed on the first substrate. The thin-film transistor layer and the color filter layer are both disposed between the first substrate and the second substrate. At least one of the thin-film transistor layer and the color filter layer is formed on the first substrate.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: June 10, 2014
    Assignees: Innocom Technology (Shenzhen) Co., Ltd., Chimei Innolux Corporation
    Inventors: Chao-Liang Lu, Hsin-Li Chen, Jian-Jhong Fu, Hao-Ching Chien, Tsau-Hua Hsieh, Hung-Yu Chen, Chiu-Lien Yang, Jia-Pang Pang
  • Publication number: 20140152908
    Abstract: A microlens array substrate is provided on which a plurality of microlenses is arranged, and the collection efficiency of a first microlens is lower than the collection efficiency of a second microlens positioned further to the outside edge sides than the first microlens.
    Type: Application
    Filed: November 15, 2013
    Publication date: June 5, 2014
    Applicant: Seiko Epson Corporation
    Inventor: Toru Nimura