With Polarizer Patents (Class 362/19)
  • Publication number: 20120249859
    Abstract: Through silicon imaging and probing. A light source provides unpolarized light to be projected on a device under test (DUT). Light reflected from the DUT may be captured by a camera or other image capture device. A pellicle is utilized to reflect light from the light source toward the DUT. The pellicle also passes light reflected by the DUT to the camera. One or more linear polarizers or half wave plates may be used to provide the desired light polarization. The ability to provide the desired polarization provides an improved image that can be captured by the camera.
    Type: Application
    Filed: March 29, 2011
    Publication date: October 4, 2012
    Inventors: Baohua Niu, Patrick M. Pardy, David L. Budka, Mitchell L. Sacks
  • Patent number: 8277106
    Abstract: The present invention provides a lighting device, comprising a first light guide adapted to guide light and output the light in a first direction; a second light guide adapted to guide light and output the light in another, second direction; a dividing structure adapted to receive light from a light source and guide the light into the first light guide and into the second light guide, wherein the dividing structure comprises controllable dividing means for guiding a first percentage of the light from the light source into the first light guide, and a second percentage of the light from the light source into the second light guide.
    Type: Grant
    Filed: May 8, 2008
    Date of Patent: October 2, 2012
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Ramon Pascal Van Gorkom, Lingli Wang, Marcellinus Petrus Carolus Michael Krijn
  • Patent number: 8277063
    Abstract: A general purpose energy saving light amplification unit suitable as a lantern, guide light, background light, safety light, ornament or decorative object, said unit adapted to harness external surrounding ambient light, or other remote energy sources from at least two directions, employing a plurality of reflector members to receive and concentrate energy in in order to luminesce or fluoresce an optimally placed mutually shared luminescent or fluorescent body member, lodged in a tapered or convergent section of a hyperbola or between at least two juxstaposed reflectors, stimulating photon and electron activity resulting in maximum amount of transmitted visible light from at least two directions, irrespective of receptive direction or angle of origin of light source.
    Type: Grant
    Filed: June 1, 2009
    Date of Patent: October 2, 2012
    Inventor: Leif eric tobias Levon
  • Patent number: 8279524
    Abstract: A polarization-modulating optical element formed of an optically active crystal material has a thickness profile where the thickness, as measured in the direction of the optical axis, varies over the area of the optical element. The polarization-modulating optical element has the effect that the plane of oscillation of a first linearly polarized light ray and the plane of oscillation of a second linearly polarized light ray are rotated, respectively, by a first angle of rotation and a second angle of rotation, with the first angle of rotation and the second angle of rotation being different from each other.
    Type: Grant
    Filed: January 14, 2005
    Date of Patent: October 2, 2012
    Assignee: Carl Zeiss SMT GmbH
    Inventors: Damian Fiolka, Markus Deguenther
  • Publication number: 20120243204
    Abstract: By introducing a stack of alternating high and low index dichroic material layers on the exit surface of a waveguide for a wedge type directional backlight, natural reflectivity differences between polarized components can be increased, effectively reflecting the vast proportion of S-polarized light rays, while at the same time transmitting the P-polarized light rays, of light impacting the exit surface of the waveguide at an angle sufficient to exit the waveguide. This recovers polarization in wedge type backlight systems, increasing illumination exiting the waveguide. Also, on the back reflecting surface of the waveguide, a birefringent material can be added to efficiently transform S-polarized reflected light from the dichroic stack, into returning P-polarized light.
    Type: Application
    Filed: May 12, 2012
    Publication date: September 27, 2012
    Applicant: RealD Inc.
    Inventor: Michael G. Robinson
  • Publication number: 20120242961
    Abstract: An illumination device includes: a first light source; a first beam spread angle changing element; an integrator; and a first small-amplitude oscillation element, in which the integrator is configured of a first fly-eye lens and a second fly-eye lens, optical magnification of an optical system configured of the first beam spread angle changing element and the first and second fly-eye lenses, and a shape of the first small-amplitude oscillation element are determined to allow a size of each light source image formed on the second fly-eye lens by each cell of the first fly-eye lens not to exceed a size of one cell of the second fly-eye lens, an amount of displacement of each light source image by oscillation amplitude of the first small-amplitude oscillation element is determined not to form the light source image over a plurality of cells of the second fly-eye lens.
    Type: Application
    Filed: March 8, 2012
    Publication date: September 27, 2012
    Applicant: SONY CORPORATION
    Inventor: Koji Miura
  • Publication number: 20120242912
    Abstract: A light source apparatus includes: an excitation light source including a laser light source; a first wheel that is controlled to rotate, and includes, in a part of a surface thereof to be illuminated by excitation light emitted from the excitation light source, a phosphor layer to be excited by the excitation light; a dichroic mirror that guides fluorescence emitted from the phosphor layer of the first wheel and the excitation light to an illumination optical system; and a second wheel that is controlled to rotate, and includes a dichroic filter that transmits light having a desired wavelength component of each of the fluorescence and the excitation light output from the dichroic mirror.
    Type: Application
    Filed: March 21, 2012
    Publication date: September 27, 2012
    Applicant: PANASONIC CORPORATION
    Inventor: Hiroshi KITANO
  • Publication number: 20120243202
    Abstract: A vehicle lamp is provided that includes a base plate 3, a light emitting element 5 mounted with a light output surface faced upward, a polarizing lens 7 formed to have a larger width in an “x” direction than that in a “y” direction. The vehicle lamp that can form a light illumination region that is in a rectangular shape and displaced to one side with respect to an axis vertical to a light output surface of a light emitting element, and also has a clear outline having no blur of the light.
    Type: Application
    Filed: February 27, 2012
    Publication date: September 27, 2012
    Inventor: Kenji MATSUOKA
  • Publication number: 20120243203
    Abstract: A vehicle light which uses a laser light source device and has a shorter dimension in an optical axis direction than conventional vehicle lights. The vehicle light comprises a laser light source device and an optical system configured so as to form a predetermined light distribution pattern. The laser light source device includes: a cylindrical light-guiding part having a diffusing surface set in a region other than a light-introducing surface; a phosphor arranged in a light-emitting region on an outer circumferential surface of the light-guiding part; a reflective film arranged in a region of the light-guiding part other than the light-introducing surface and the light-emitting region; and a laser light source that outputs a laser beam which is introduced into the light-guiding part from the light-introducing surface and enters the phosphor. The light-guiding part and the laser light source are arranged adjacent to each other.
    Type: Application
    Filed: March 21, 2012
    Publication date: September 27, 2012
    Applicant: Stanley Electric Co., Ltd.
    Inventors: Teruo KOIKE, Ji-Hao Liang
  • Publication number: 20120236530
    Abstract: A lighting assembly includes a light guide to propagate light by total internal reflection and having a light output region on a major surface thereof. The lighting assembly also includes an optical adjuster having a major surface juxtaposed with and conforming to the light guide's major surface. The optical adjuster has a first region and a second region, the first region having a light modifying characteristic. The optical adjuster and light output region are variably positionable relative to one another to selectively apportion light emitted from the light output region between the first region and the second region. In this way, light apportioned to the first region is modified by the light modifying characteristic so that light output from the lighting assembly is modified based on relative positioning of the optical adjuster and the light guide.
    Type: Application
    Filed: March 15, 2012
    Publication date: September 20, 2012
    Inventors: Jeffery R. Parker, Timothy A. McCollum, Fumitomo Hide, Alexey Titov, Ian Hardcastle
  • Publication number: 20120236285
    Abstract: An illumination optical system illuminates an irradiated surface with light supplied from a light source. The illumination optical system includes a diffractive optical element disposed in an optical path of linearly polarized light supplied from the light source. The diffractive optical element forms a multipole illumination field. including a plurality of illumination fields. The illumination optical system also includes an optical integrator that forms a multipole light source including a plurality of planar light sources with light that has passed through the multipole illumination field. The illumination optical system also includes a polarization optical member disposed in an illumination optical path and that sets a polarization direction of light that has passed through the multipole light source to a predetermined polarization direction.
    Type: Application
    Filed: May 29, 2012
    Publication date: September 20, 2012
    Applicant: NIKON CORPORATION
    Inventors: Osamu TANITSU, Hirohisa TANAKA, Kenichi MURAMATSU, Norio KOMINE, Hisashi NISHINAGA, Tomoyuki MATSUYAMA, Takehito KUDO
  • Publication number: 20120230006
    Abstract: Example embodiments relate to a lighting device comprising a shell, a plurality of white LEDs and at least one red LED. The white LEDs and red LED(s) are all positioned at the bottom of the shell. The white LEDs, which amount is in a range of 2M to 8M, and red LED, which amount is in a range of 1M to 4M, M represents a constant, are positioned to form an LED array. The light emitted by the white LEDs and red LED(s) forms a combined light to be emitted from the lighting device. The combined light shows the nature which falls within a closed region of CIE 1931 color space, where is defined by a plurality of line segments which intersect each other at points (0.36, 0.55), (0.45, 0.55), (0.55, 0.45), (0.4, 0.3), (0.3, 0.3), (0.32, 0.398), (0.36, 0.378), (0.421, 0.419), (0.431, 0.451) and (0.36, 0.482).
    Type: Application
    Filed: March 9, 2012
    Publication date: September 13, 2012
    Applicant: UPEC ELECTRONICS CORP.
    Inventor: Huang-Chen Guo
  • Publication number: 20120230008
    Abstract: An object is to implement a narrowed picture-frame while suppressing the occurrence of light leakage and a reduction in luminance in an edge-light type backlight device. A backlight device is composed of LEDs (40); a side chassis (51) supporting a board having the LEDs (40) mounted thereon; a light guide plate (20) for allowing light emitted from the LEDs (40) to exit toward a liquid crystal panel in a planar manner; a reflection sheet (30) for allowing light traveling toward a back surface side within the light guide plate (20) to be reflected thereby; optical sheets (10) including a reflection type polarizer (11), a prism sheet (12), and a diffuser (13); and a top chassis (52) disposed on top of the optical sheets (10). Black printing (60) is provided in a part of the region of the diffuser (13).
    Type: Application
    Filed: October 1, 2010
    Publication date: September 13, 2012
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Yuhsaku Ajichi, Tomohiko Yamamoto
  • Publication number: 20120230007
    Abstract: A semiconductor light source apparatus can emit various color lights having a substantially uniform color tone and high brightness. The semiconductor light source apparatus can include a radiating substrate, at least one phosphor layer disposed on the radiating substrate and a semiconductor light source emitting blue light. The at least one phosphor layer can be composed of at least one of a glass phosphor and a phosphor ceramic. The light source can be located adjacent the phosphor layer so that the blue light having high brightness can be efficiently reflected on the radiating substrate via the phosphor layer while preventing the blue light from a mirror reflection on the phosphor layer. Thus, the disclosed subject matter can provide a semiconductor light source apparatus that can emit various uniform color lights having high brightness and a lighting unit using the light source apparatus, which can be used for general lighting, vehicle lighting etc.
    Type: Application
    Filed: March 12, 2012
    Publication date: September 13, 2012
    Inventor: Yasuyuki Kawakami
  • Publication number: 20120229735
    Abstract: This invention relates to a transmissive liquid crystal display including a light source (BL), a reflective linearly-polarizing layer (Pr1), a birefringent layer (A) having specific optical properties and specific retardation properties, a light source-side absorptive linearly-polarizing layer (P1), a liquid crystal cell (LC), and a viewer-side linearly-polarizing layer (P2) which are arranged in this order. In the transmissive liquid crystal display of the invention, light leakage is suppressed in oblique directions so that black brightness can be reduced. A reduction in contrast in the normal direction can also be suppressed, which is caused by the distribution of light to the normal direction.
    Type: Application
    Filed: May 21, 2012
    Publication date: September 13, 2012
    Applicant: NITTO DENKO CORPORATION
    Inventors: Minoru Miyatake, Taku Yamada, Kuniaki Ishibashi
  • Publication number: 20120229772
    Abstract: An illumination apparatus includes multiple liquid crystal panels, a polarization-state adjusting element, and a cross dichroic prism. A green component light includes a central-wavelength component light, a short-wavelength component light, and a long-wavelength component light. The polarization-state adjusting element separately adjusts a polarization state of the central-wavelength component light and each of polarization states of the long-wavelength component light and the short-wavelength component light.
    Type: Application
    Filed: May 25, 2012
    Publication date: September 13, 2012
    Applicant: SANYO ELECTRIC CO., LTD
    Inventor: Makoto MAEDA
  • Patent number: 8264668
    Abstract: The disclosure relates to an illumination system of a microlithographic projection exposure apparatus. The illumination system can include a depolariser which in conjunction with a light mixing system disposed downstream in the light propagation direction at least partially causes effective depolarisation of polarised light impinging on the depolariser. The illumination system can also include a microlens array which is arranged upstream of the light mixing system in the light propagation direction. The microlens array can include a plurality of microlenses arranged with a periodicity. The depolariser can be configured so that a contribution afforded by interaction of the depolariser with the periodicity of the microlens array to a residual polarisation distribution occurring in a pupil plane arranged downstream of the microlens array in the light propagation direction has a maximum degree of polarisation of not more than 5%.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: September 11, 2012
    Assignee: Carl Zeiss SMT GmbH
    Inventors: Damian Fiolka, Manfred Maul, Markus Schwab, Wolfgang Seitz, Olaf Dittmann
  • Publication number: 20120224149
    Abstract: A hologram layer (13) is irradiated by light from an optical element (10). The hologram layer (13) is provided with a first hologram (14) that diffracts in a predetermined direction, from among incident light from the optical element (10), X-polarized light in which the polarization component is in a specific direction and emits the light as X-polarized light of a first phase state (P1), and a second hologram (15) that both diffracts in the same direction as the X-polarized light of the first phase state (P1) and moreover at an equal radiation angle, from among incident light from the optical element (10), Y-polarized light in which the polarization component is in a direction orthogonal to that of the X-polarized light and converts it to X-polarized light, and emits the light as X-polarized light of a second phase state (P2) that differs from the first phase state (P1).
    Type: Application
    Filed: October 27, 2010
    Publication date: September 6, 2012
    Applicant: NEC Corporation
    Inventors: Shin Tominaga, Masao Imai, Goroh Saitoh, Masanao Natsumeda
  • Publication number: 20120224146
    Abstract: Illumination device includes a light source (101); an illumination optical system (102, 103, 104, 106, 107) that spatially splits each of the plurality of color light beams emitted from the light source, superimposes the split light beams of each of the plurality of color light beams, and emits the superimposed light beams to a display element (110); a reflective polarization plate (109) that is arranged between the illumination optical system (102, 103, 104, 106, 107) and the display element (110) and that transmits first polarized light and reflects second polarized light whose polarization state is different from that of the first polarized light toward the illumination optical system (102, 103, 104, 106, 107); a reflection element (105) that is arranged at a position where each of the plurality of color light beams is spatially split by the illumination optical system and that transmits the split light beams of each of the color light beams and reflects, of the split light beams of each of the color light
    Type: Application
    Filed: October 15, 2009
    Publication date: September 6, 2012
    Inventor: Atsushi Katou
  • Publication number: 20120212928
    Abstract: A flat display device includes a flat display module that produces an image. The device also includes a reflective sheet at a rear side of the flat display module, a support member on the reflective sheet, and an optical adhesive film adhered to the front surface of the flat display module, to sides of the flat display module, and to a portion of a back of the support member that is opposite the reflective sheet. The image is produced on the front surface of the flat display module and is emitted through the optical adhesive film.
    Type: Application
    Filed: December 20, 2011
    Publication date: August 23, 2012
    Inventors: Jong-Nam LEE, Kyu-Seok Kim, Do-Hyun Kim, Jeong-Min Park
  • Publication number: 20120212929
    Abstract: An LED illumination system includes a plurality of LED modules and a plurality of corresponding collimating lenses to provide increased brightness. Each LED module has at least one LED chip having a light emitting area that emits light and a recycling reflector. The reflector is positioned to reflect the light from the light emitting area back to the LED chip and has a transmissive aperture through which the emitted light exits. The collimating lenses are arranged to receive and collimate the light exiting from the LED modules.
    Type: Application
    Filed: February 23, 2012
    Publication date: August 23, 2012
    Inventor: Kenneth LI
  • Publication number: 20120212711
    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: Application
    Filed: February 16, 2012
    Publication date: August 23, 2012
    Inventor: Takao GOTO
  • Publication number: 20120200831
    Abstract: An optical element is provided with: first polarization-separation layer (13) that is laminated on first surface (12b) of light guide body (12) and that, of the light incident from light guide body (12), transmits X-polarized light and reflects Y-polarized light that is orthogonal to the X-polarized light; polarization hologram layer (14) that is laminated on first polarization-separation layer (13) and that diffracts to a prescribed diffraction angle the X-polarized light that is incident within a prescribed range of angles of incidence and converts the X-polarized light to Y-polarized light; second polarization-separation layer (15) that is laminated on polarization hologram layer (14) and that, of the light incident from polarization hologram layer (14) transmits Y-polarized light and reflects X-polarized light; reflection layer (18) provided on second surface (12c) side of light guide body (12); and phase difference layer (17) that is provided between first surface (12b) of light guide body (12) and refle
    Type: Application
    Filed: September 27, 2010
    Publication date: August 9, 2012
    Applicant: NEC CORPORATION
    Inventor: Shin Tominaga
  • Publication number: 20120200801
    Abstract: Light sources are disclosed. A disclosed light source includes an optically reflective cavity that includes an input port for receiving light and an output port for transmitting light, a lamp that is disposed at the input port, and an optical stack that is disposed at the output port. The optical stack includes a forward scattering optical diffuser that is disposed at the output port and has an optical haze that is not less than about 20%, and an optical film that is disposed on the optical diffuser. The optical film enhance total internal reflection at the interface between the optical film and the optical diffuser. The optical film has an index of refraction that is not greater than about 1.3 and an optical haze that is not greater than about 5%. The optical stack also includes a reflective polarizer layer that is disposed on the optical film. Substantial portions of each two neighboring major surfaces in the optical stack are in physical contact with each other.
    Type: Application
    Filed: October 22, 2010
    Publication date: August 9, 2012
    Inventors: John A. Wheatley, Tao Liu, Encai Hao, William Blake Kolb, Michael Benton Free
  • Publication number: 20120201114
    Abstract: An optical pickup, an optical recording/reproducing device, a computer, an optical disk recorder, and a minute spot forming method that can enable light propagation with a high transmittance and can form a minute spot. The optical pickup includes a wavelength plate (202) that converts the polarization state of the light beam emitted from a semiconductor laser (101) and an objective lens optical system (105) that converges the light beam whose polarization state has been converted with a numerical aperture greater than 1. The wavelength plate (202) generates a light beam having a polarization state that differs depending on location. The polarization distribution of the light beam generated by the wavelength plate (202) is axially symmetric with respect to the optical axis of the light beam as an axis of symmetry. A light ray on the light axis is a circularly polarized light. Part of a light ray other than the light ray on the optical axis is an elliptically polarized light with an ellipticity of less than 1.
    Type: Application
    Filed: October 20, 2010
    Publication date: August 9, 2012
    Inventor: Kousei Sano
  • Patent number: 8237918
    Abstract: An optical system, such as an illumination device or a projection objective of a microlithographic projection exposure apparatus, is disclosed. The optical system can include a polarization compensator which has at least one polarization-modifying partial element. The optical system can also include a manipulator by which the position of the at least one partial element can be altered. At least one operating mode of the optical system can be set in which the intensity, over a region which belongs to a plane perpendicular to the optical axis and which can be illuminated with light from the light source, does not exceed 20% of the maximum intensity in the plane, and the manipulator is arranged in the region.
    Type: Grant
    Filed: July 7, 2009
    Date of Patent: August 7, 2012
    Assignee: Carl Zeiss SMT GmbH
    Inventors: Michael Totzeck, Toralf Gruner, Damian Fiolka
  • Publication number: 20120194768
    Abstract: A wavelength plate includes: a first quartz plate unit including a plurality of quartz plates which have main surfaces disposed in the same plane and are jointed with each other; and a second quartz plate unit including a plurality of quartz plates which have main surfaces disposed on a main surface of the first quartz plate unit and are jointed with each other in a position different from a joint position of the first quartz plate unit.
    Type: Application
    Filed: January 23, 2012
    Publication date: August 2, 2012
    Inventors: Ryoko Horikoshi, Yuichi Takahashi, Koji Kita
  • Publication number: 20120188468
    Abstract: An illuminator includes: a light source that emits light; a first lens array including a plurality of first lenslets; a second lens array including a plurality of second lenslets corresponding to the plurality of first lenslets; a polarization conversion element that converts light fluxes from the second lens array into polarized light fluxes and outputs the polarized light fluxes; and a superimposing lens that superimposes sub-light fluxes from the polarization conversion element, wherein the plurality of first lenslets and the plurality of second lenslets are each arranged in a matrix, the polarization conversion element is formed of a plurality of columns of polarization conversion units that convert the light fluxes from the plurality of second lenslets into the polarized light fluxes on a column basis, and the number of columns of the polarization conversion units is fewer than the number of columns of the first lenslets and the second lenslets.
    Type: Application
    Filed: December 27, 2011
    Publication date: July 26, 2012
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Katsumi TANAKA
  • Publication number: 20120182524
    Abstract: Provided is an illumination device that includes: light source (101); light guiding means (102) where light from light source (101) is supplied to one end surface, and light incident from the one end surface is propagated inside to exit from the other end surface; illuminating optical systems (103, 104, 106, and 107) that spatially separate a luminous flux output from the other end surface of light guiding means (102) into a plurality of luminous fluxes and that form, on display element (110), an optical image formed on the other end surface of light guiding means (102); reflective polarizing plate (109) that is located between illuminating optical systems (103, 104, 106, and 107) and display element (110) and that transmits first polarized light while reflecting second polarized light different in polarized state from the first polarized light toward illuminating optical systems (103, 104, 106, and 107); reflecting element (105) that is disposed at a position where the plurality of luminous fluxes are spatia
    Type: Application
    Filed: September 16, 2009
    Publication date: July 19, 2012
    Inventor: Atsushi Katou
  • Publication number: 20120182700
    Abstract: A display device includes a display panel including a front substrate and a back substrate, a plurality of first brackets attached to a non-display area of a back surface of the back substrate using an adhesive, a frame disposed in the rear of the display panel, an optical layer disposed between the frame and the display panel, a light guide plate disposed between the frame and the optical layer, a light source disposed on the side of the light guide plate, a second bracket disposed on the plurality of first brackets, and a connection frame including a first portion inserted into a hole or a groove of each of the plurality of first brackets and a second portion connected to the second bracket.
    Type: Application
    Filed: October 28, 2011
    Publication date: July 19, 2012
    Inventors: Jonghyun BYEON, Sunghwan Kim, Cheolsoo Kim, Moungyoub Lee, Hyoungsuck Oh, Yunjoo Kim
  • Publication number: 20120182525
    Abstract: A light source device includes: a first light source (3a) that emits first polarized light of a plurality of colors including different wavelengths; a second light source (3b) that emits second polarized light whose polarization state differs from that of the first polarized light and that includes light of at least one color from among the plurality of colors; and a first color synthesis optical element (1) that synthesizes the first polarized light emitted from the first light source (3a) and the second polarized light emitted from the second light source (3b).
    Type: Application
    Filed: September 16, 2010
    Publication date: July 19, 2012
    Applicant: NEC CORPORATION
    Inventors: Masao Imai, Goroh Saitoh, Fujio Okumura
  • Publication number: 20120176766
    Abstract: Disclosed is an optical element that includes: a light guide body into which light from a light-emitting element enters; carrier generation layer (6) formed in the light guide body, in which carriers are generated by the light from the light guide body; plasmon excitation layer (8) stacked on carrier generation layer (6), which has a plasma frequency higher than the frequency of light generated when carrier generation layer (6) is excited by the light from the light-emitting element; and wave vector conversion layer (10) stacked on plasmon excitation layer (8), which converts light incident from plasmon excitation layer (8) into light having a predetermined exit angle to output the light. Plasmon excitation layer (8) is sandwiched between low dielectric constant layer (7) and high dielectric constant layer (9).
    Type: Application
    Filed: September 30, 2010
    Publication date: July 12, 2012
    Applicant: NEC CORPORATION
    Inventor: Masanao Natsumeda
  • Publication number: 20120170245
    Abstract: A folder type polarizing film for OLEDs and a display device, the film including a polarizer; a transparent support attached to an upper surface of the polarizer, the transparent support being a cycloolefin polymer film; and a compensation film attached to a lower surface of the polarizer, the compensation film being a cycloolefin polymer having a phase difference of ?/4 relative to a polarization axis of the polarizer.
    Type: Application
    Filed: December 29, 2011
    Publication date: July 5, 2012
    Inventors: Seon Oh HWANG, Yong Woon KIM, Hae Ryong CHUNG
  • Publication number: 20120162961
    Abstract: A driver information system is provided for a vehicle having at least one instrument, which has a front plate and an illumination device. At least one light-transmitting area is arranged in the front plate and the illumination device is arranged behind the front plate, the illumination device being able to emit light through the at least one light-transmitting area of the front plate. A polarization filter is arranged between the front plate and the illumination device. The polarization filter is oriented opposite to a polarization direction of a windshield of the vehicle.
    Type: Application
    Filed: December 22, 2011
    Publication date: June 28, 2012
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Peter BRANDT, Heiko CHARLE, Georg BAUER
  • Publication number: 20120162610
    Abstract: An illumination optical system includes a first compression system configured to compress a light flux on each of first and second sections, a second compression system configured to compress the light flux on the first section, a polarization converter arranged so that a section that contains a normal of the second polarization splitting surface and the optical axis becomes the second section, and configured to convert non-polarized light into linearly polarized light, a first lens array arranged in front of the polarization converter along an optical path, and a second lens array arranged between the first lens array and the polarization converter along the optical path. Both of the first lens array and the second lens array have no optical power on the second section.
    Type: Application
    Filed: December 22, 2011
    Publication date: June 28, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Yuuki Maeda, Takashi Sudo, Hiroyuki Kodama, Yu Yamauchi
  • Publication number: 20120162960
    Abstract: A light-uniforming anti-glaring structure includes a light-polarizing reflection unit and a light-polarizing position adjusting unit. The light-polarizing reflection unit includes a multilayer reflector composed of a plurality of inter-stacked polymer films. One of the inter-stacked polymer films is a birefringence material layer that conforms to the condition of NX?NY?NZ, wherein NX is the index of refraction of light at X direction, NY is the index of refraction of light at Y direction, and NZ is the index of refraction of light at Z direction. The light-polarizing position adjusting unit is coupled with the light-polarizing reflection unit for adjusting the position of the light-polarizing reflection unit.
    Type: Application
    Filed: September 21, 2011
    Publication date: June 28, 2012
    Applicant: EXTEND OPTRONICS CORP.
    Inventors: CHAO-YING LIN, JEN-HUAI CHANG
  • Publication number: 20120154755
    Abstract: An illuminating device includes: light source (101); light guiding means (102) where light from light (101) is supplied to one end surface, and light incident from the one end surface is propagated inside to exit from the other end surface; illuminating optical systems (103 to 107) that form an optical image formed on the other end surface of light guiding means (102) on display element (22); reflective polarizing plate (109) that is located between illuminating optical systems (103 to 107) and display element (12), and transmits first polarized light while reflecting second polarized light whose polarized state is different from the first polarized light toward illuminating optical systems (103 to 107); phase plate (108) located between light guiding means (102) and reflective polarizing plate (109); and reflecting means (21) that is located on a side opposite the one end surface of light guiding means (102), and reflects, among lights by reflective polarizing plate (109), light incident via phase plate (108
    Type: Application
    Filed: September 2, 2009
    Publication date: June 21, 2012
    Inventor: Atsushi Katou
  • Patent number: 8201956
    Abstract: A task lighting apparatus produces glare-free illumination of a work area. The apparatus includes a shade defining a cavity having an opening, a light source positioned to emit light into the cavity, and a glare control member disposed within the opening wherein the diffuser comprises a louvered array of dual brightness enhancement film.
    Type: Grant
    Filed: April 29, 2010
    Date of Patent: June 19, 2012
    Assignee: 3M Innovative Properties Company
    Inventor: Kuo-Tai Yeh
  • Publication number: 20120146507
    Abstract: An extreme ultraviolet light generation system used with a laser apparatus may be provided, and the extreme ultraviolet light generation system may include: a chamber including at least one window for at least one laser beam and a target supply unit for supplying a target material into the chamber; and at least one polarization control unit, provided on a laser beam path, for controlling a polarization state of the at least one laser beam.
    Type: Application
    Filed: March 25, 2011
    Publication date: June 14, 2012
    Inventors: Tatsuya Yanagida, Osamu Wakabayashi
  • Publication number: 20120147330
    Abstract: Provided is an illuminating device that includes: first light guiding means (3) where light incident from one end surface is propagated inside to exit from the other end surface; illuminating optical system (1) that spatially separates a luminous flux from the other end surface of first light guiding means (3) into a plurality of luminous fluxes, and forms an optical image formed on the other end surface of first light guiding means (3) on display element (12); reflective polarizing plate (11) that is located between illuminating optical system (1) and display element (12), and transmits first polarized light while reflecting second polarized light different that is in polarized state from the first polarized light toward illuminating optical system (1); reflecting element (7) that is disposed at a position where the plurality of luminous fluxes are spatially separated, and that includes transmission regions through which the plurality of luminous fluxes are transmitted, and a reflecting film formed in a regi
    Type: Application
    Filed: August 21, 2009
    Publication date: June 14, 2012
    Inventor: Atsushi Katou
  • Publication number: 20120147331
    Abstract: A light source unit is provided which includes: a first light source which shines excitation light of a predetermined wavelength band; an optical path switching device which switches in a time-sharing fashion the light shone from the first light source into first light which is shone in a first direction and second light which is shone in a second direction; a light emitting plate on which a luminescent material layer is formed which emits luminescent light of a wavelength band which is different from that of the excitation light when receiving the second light; and a light guiding optical system which guides the first light and the luminescent light to the same optical path.
    Type: Application
    Filed: December 13, 2011
    Publication date: June 14, 2012
    Applicant: CASIO COMPUTER CO., LTD.
    Inventor: Takeshi MIYAZAKI
  • Patent number: 8199403
    Abstract: A light polarization control apparatus includes a linear polarized light generation device for generating a linearly polarized light ray; and a pair of first and second four-division type half-wave plate located at front and back positions of a light axis, each said half-wave plate having a surface divided into four regions by a couple of boundary lines crossing together at right angles, wherein the linearly polarized light ray is guided to pass through said pair of first and second four-division type half-wave plate to thereby divide this light ray into eight areas each having its polarization state as converted to any one of a azimuthally polarized state and a radially polarized state.
    Type: Grant
    Filed: March 16, 2009
    Date of Patent: June 12, 2012
    Assignees: Kabushiki Kaisha Toshiba, NEC Corporation
    Inventor: Riki Ogawa
  • Publication number: 20120140183
    Abstract: A light source device has: a light source unit including solid-state light sources emitting blue-color light and a condensing lens; a dichroic mirror polarization separating color light into first and second polarization components; a fluorescence emission plate excited with the first polarization component, emitting fluorescence of green and red components to enter the dichroic mirror; a first retardation plate converting the second polarization component to a circularly polarized light; and a reflection plate reflecting a light passed through the first retardation plate to reenter the same. The color lights from the fluorescence emission plate and the first retardation plate are combined at the dichroic mirror. A second retardation plate converts the polarization direction of the light from the light source unit, so as to control the ratio of p-polarization and s-polarization components. Lights from solid-state light sources are condensed efficiently and a high spectrum-utilization factor is obtained.
    Type: Application
    Filed: December 6, 2011
    Publication date: June 7, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Takaaki TANAKA, Hiroshi KITANO
  • Publication number: 20120140434
    Abstract: A display panel and a light source device used therein are provided. The display panel includes a light-guide thin-film circuit substrate, a light source and a polarizing layer. The light-guide thin-film circuit substrate has a light entrance end and a light exit top surface, and the light source is disposed corresponding to the light entrance end. The polarizing layer is disposed on the light-guide thin-film circuit substrate and parallels the light exit top surface of the light-guide thin-film circuit substrate. The light produced by the light source enters the circuit substrate through the light entrance end, guided and transmitted through the circuit substrate, and then leaves the circuit substrate through the light exit top surface and enters the polarizing layer. The light after passing through the polarizing layer is turned into a polarized light having flat light source effect as a backlight source for the system.
    Type: Application
    Filed: December 13, 2011
    Publication date: June 7, 2012
    Applicant: AU OPTRONICS CORPORATION
    Inventors: Hsin-Tao Huang, Deng-Kuen Shiau, Chun-Chi Hsu, Chun-Chung Hsiao, Mao-Wei Lin
  • Publication number: 20120133846
    Abstract: An illumination device includes a light source, which emits light polarized in a single direction, and a beam splitting unit, which splits the polarized light into beams of polarized light at a given ratio. A switching unit switches light converters to convert the polarized light, which is split into a plurality of beams, into beams of colored light. The beams of colored light are combined to change the balance of color purity and light amount of the polarized light.
    Type: Application
    Filed: November 23, 2011
    Publication date: May 31, 2012
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventor: Koji ISHII
  • Publication number: 20120127436
    Abstract: A projection apparatus including an illumination module, a display panel, and a projection lens module is provided. The illumination module includes a light source assembly including a light guide plate, a light source, a reflector, and a reflective polarizer, and a polarized beam splitter (PBS). The light guide plate has a light emitting surface, a bottom surface opposite to the light emitting surface, and a light incident surface connected between the light emitting surface and the bottom surface. The light source, the reflector, and the reflective polarizer are faced to the light incident surface, the bottom surface, and the light emitting surface respectively. The PBS is disposed beside the reflective polarizer away from the light guide plate. The display panel and the light source assembly are respectively located at two adjacent sides of the PBS. The projection lens module is disposed beside the PBS away from the display panel.
    Type: Application
    Filed: November 18, 2011
    Publication date: May 24, 2012
    Applicants: WINTEK CORPORATION, WINTEK TECHNOLOGY DONGGUAN LTD.
    Inventor: Chiang-Yang Fang
  • Publication number: 20120105761
    Abstract: A display device includes a display panel, a backlight unit positioned in the rear of the display panel, a plurality of brackets attached to a non-display area of a back surface of the display panel using an adhesive, a back cover positioned in the rear of the display panel, and a side cover including a first portion parallel to a width direction of the display panel and a second portion which is connected to the first portion and is positioned parallel to a longitudinal direction of the display panel. An end of the back cover is positioned in the second portion of the side cover. An edge of at least one side of a front surface of the display panel is exposed.
    Type: Application
    Filed: October 28, 2011
    Publication date: May 3, 2012
    Inventors: Moungyoub LEE, Sunghwan Kim, Jonghyun Byeon
  • Publication number: 20120106121
    Abstract: A display device is disclosed. The display device includes a display panel including a front substrate and a back substrate, a backlight unit positioned in the rear of the display panel, a plurality of brackets attached to a non-display area of a back surface of the display panel using an adhesive, and a buffer positioned on the side of the display panel.
    Type: Application
    Filed: October 26, 2011
    Publication date: May 3, 2012
    Inventors: Moungyoub LEE, Jonghyun Byeon, Yunjoo Kim, Sangdon Park
  • Publication number: 20120106122
    Abstract: A display device includes a display panel including a front substrate and a back substrate, a plurality of brackets attached to a non-display area of a back surface of the back substrate using an adhesive, and a backlight unit positioned in the rear of the display panel. The backlight unit includes a frame including at least one protrusion, a light guide plate disposed between the frame and the display panel, the light guide plate including at least one groove or hole corresponding to the at least one protrusion of the frame, an optical layer disposed between the light guide plate and the display panel, and a light source disposed on the side of the light guide plate.
    Type: Application
    Filed: October 27, 2011
    Publication date: May 3, 2012
    Inventors: Inkeun RYU, Sangdon Park, Moungyoub Lee, Kyoungmok Kim, Yunjoo Kim, Jonghyun Byeon
  • Publication number: 20120098422
    Abstract: An optical unit on a light emitting unit includes a first polarizing plate on the light emitting unit, a second polarizing plate on the first polarizing plate, the second polarizing plate having a higher polarization degree than the first polarizing plate, and a plurality of phase shift plates between the first polarizing plate and the second polarizing plate.
    Type: Application
    Filed: September 22, 2011
    Publication date: April 26, 2012
    Inventors: Woo-Suk Jung, Soon-Ryong Park