Wavelength Selective (e.g., Dichroic Mirror, Etc.) Patents (Class 359/634)
  • Patent number: 11388377
    Abstract: The display device includes a light source unit that emits light, a first display element, and a second display element. The display device further includes a light separating and synthesizing member that separates the light emitted from the light source unit into first light and second light having different wavelength regions, emits the first light toward the first display element, emits the second light toward the second display element, and synthesizes the first light that has been reflected and modulated by the first display element and the second light that has been reflected and modulated by the second display element. The display device further includes a light absorbing member that covers a part of the first display element. The light absorbing member absorbs a part of the modulated second light reflected by the second display element and directed toward the first display element.
    Type: Grant
    Filed: December 23, 2020
    Date of Patent: July 12, 2022
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Manabu Okuno, Manabu Chikayama
  • Patent number: 11348981
    Abstract: An image light generation device of the present disclosure includes first to third display elements configured to emit first to third color light, respectively, and a color synthesis element configured to synthesize the first to third color light. The color synthesis element includes first to third prisms, a first dichroic film configured to reflect the first color light and transmit the second and third color light, and a second dichroic film configured to reflect the second color light and transmit the third color light. The first and second prisms are joined together through a first dichroic film with no air layer therebetween, the second and third prisms are joined together through a second dichroic film with no air layer therebetween, and the main light beam incidence angle of the third color light to the second dichroic film is 40 degrees or greater.
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: May 31, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Kunihiko Yano
  • Patent number: 11287664
    Abstract: An optical mux and demux module includes: a mirror which has a reflective surface, a parallel block holder which has a first principal surface and a second principal surface arranged in parallel, where the mirror is disposed at a first principal surface side, and a plurality of band pass filters each of which has a fixing side principal surface and an incident side principal surface, where the parallel block holder is fixed on the fixing side principal surface; wherein dug portions, being the same in number with the band pass filters, are formed on the second principal surface which the parallel block holder has, and each of the plurality of band pass filters is fixed with the parallel block holder with an adhesive agent which is thrown into a dug portion.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: March 29, 2022
    Assignee: Mitsubishi Electric Corporation
    Inventor: Yasunori Nishimura
  • Patent number: 11215819
    Abstract: The present invention is capable of making it difficult to perceive the narrowness of a display area of a virtual image. Provided is a head-up display which projects display light on a transmission/reflection part to display a first virtual image in an area in which the virtual image can be displayed, said area being superimposed on an actual view outside of a vehicle, wherein, when deviation occurs in the relative positions of the actual view and the transmission/reflection part from the perspective of a viewer, a control unit enlarges a virtual image display area, which sets the range in which the first virtual image is displayed within the area in which the virtual image can be displayed, so as to be larger than normal.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: January 4, 2022
    Assignee: NIPPON SEIKI CO., LTD.
    Inventors: Makoto Hada, Yuki Masuya
  • Patent number: 11212903
    Abstract: An apparatus for generating extreme ultraviolet (EUV) radiation includes a droplet generator configured to generate target droplets. An excitation laser is configured to heat the target droplets using excitation pulses to convert the target droplets to plasma. A deformable mirror is disposed in a path of the excitation laser. A controller is configured to adjust parameters of the excitation laser by controlling the deformable mirror based on a feedback parameter.
    Type: Grant
    Filed: August 26, 2019
    Date of Patent: December 28, 2021
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Ting-Ya Cheng, Chun-Lin Chang, Li-Jui Chen, Han-Lung Chang
  • Patent number: 11163163
    Abstract: This invention is Augmented Reality (AR) eyewear with a Quasi Fresnel Reflector (QFR) which reflects light rays from a lateral Light Emitter Array (LEA) toward a person's eye to create virtual images in the person's field of view. This eyewear can have two Quasi Fresnel Reflectors (QFRs), one for each of the person's eyes. A Quasi Fresnel Reflector (AFR) can have: an array of linear, partially-reflective, partially-transmissive surfaces; an array of nested, arcuate, partially-reflective, partially-transmissive surfaces; and/or a spoke-and-ring array of partially-reflective, partially-transmissive surfaces.
    Type: Grant
    Filed: November 17, 2019
    Date of Patent: November 2, 2021
    Assignee: Holovisions
    Inventor: Robert A. Connor
  • Patent number: 11149919
    Abstract: Light directing film structure employing at least two layers having different refractive indices and forming a continuous corrugated boundary between major surfaces of the film. The corrugated boundary forms a plurality of alternating facets forming different dihedral angles with a prevalent plane of the film structure. The facets may longitudinally extend along an arcuate or circular path. Light received by a major surface of the film structure is internally redirected by interacting with the facets of the corrugated inter-layer boundary and may be emitted from the opposing major surface towards a new propagation direction which is different from the original propagation direction.
    Type: Grant
    Filed: October 30, 2020
    Date of Patent: October 19, 2021
    Assignee: S.V.V. TECHNOLOGY INNOVATIONS, INC.
    Inventor: Sergiy Vasylyev
  • Patent number: 11099469
    Abstract: Devices, systems, and methods are provided for an ultra-short throw projector. The projector may include an illuminator having an ellipsoidal reflector, a light emitting diode (LED) positioned inside of the ellipsoidal reflector, and a Fresnel lens positioned inside of the ellipsoidal reflector. The projector may include a circular transmissive liquid crystal display (LCD) and a three-element plastic projection lens positioned outside of the ellipsoidal reflector, wherein the circular transmissive LCD is positioned between the ellipsoidal reflector and the three-element plastic projection lens, wherein the ellipsoidal reflector reflects light emitted by the LED, wherein the Fresnel lens refracts light emitted by the LED, and wherein the three-element plastic projection lens projects the reflected light and the refracted light.
    Type: Grant
    Filed: November 11, 2019
    Date of Patent: August 24, 2021
    Assignee: Amazon Technologies, Inc.
    Inventors: Gareth James Selfe, Eric Gifford Marason, Suchit Shah, Robert Domingo Lau, John Larkin, Mark Steven Pearson
  • Patent number: 11092874
    Abstract: An optical structure includes a refractive material, a Fresnel surface, a dichroic reflective coating and a second coating. The refractive material has a refractive index. The Fresnel surface is formed in the refractive material and the Fresnel surface includes active surfaces and draft surfaces. The dichroic reflective coating is selectively disposed on the active surface. A second coating is selectively disposed on the draft surfaces.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: August 17, 2021
    Assignee: Facebook Technologies, LLC
    Inventors: Qi Zhang, Robin Sharma, Andrew John Ouderkirk
  • Patent number: 11061243
    Abstract: A dichroic-mirror array in which a plurality of dichroic mirrors are arranged, and by satisfying a predetermined relationship between a width, a thickness, a material, a tilt, an interval, and a step difference of dichroic mirrors, the dichroic-mirror array is miniaturized, an optical path length is reduced, and at the same time, an aperture width is increased.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: July 13, 2021
    Assignee: Hitachi High-Tech Corporation
    Inventors: Takashi Anazawa, Motohiro Yamazaki
  • Patent number: 11008648
    Abstract: Disclosed is a CuO/Se composite film, in which Se with low melting point (221° C.) and strong photosensitivity is introduced into CuO, providing the film with fewer defects and excellent optical, electrical and photoelectric properties. In the preparation method of the invention, Se is introduced into CuO and melted by low-temperature annealing, and then the molten Se can infiltrate CuO to eliminate or reduce defects in the CuO film such as voids and dangling bonds, thereby improving optical, electrical and photoelectric properties of the film and overcoming the shortcomings that CuO has poor crystallinity, high melting point and is decomposed at a high temperature.
    Type: Grant
    Filed: December 28, 2019
    Date of Patent: May 18, 2021
    Assignee: Shaanxi Normal University
    Inventors: Fei Gao, Rongrong Gao, Hao Liu, Shengzhong Liu
  • Patent number: 10996481
    Abstract: A HUD apparatus for a vehicle includes a HUD patch defined upon a reflective surface of a windshield of the vehicle. A virtual image generator projects a virtual image within the HUD patch. An image sensor is coaligned with the virtual image generator and has a field of view including the HUD patch. A controller is configured to receive, from the image sensor, a HUD patch image, and to adjust the projected virtual image based upon the HUD patch image.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: May 4, 2021
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: James W. Wells, Jinglin Li, Kai-Han Chang, Thomas A. Seder
  • Patent number: 10996462
    Abstract: A camera module according to one embodiment comprises: a barrel provided with at least one lens; a retainer having an inner space and accommodating the barrel in the inner space; a holder coupled to the lower portion of the retainer; a housing disposed on the lower side of the holder and accommodating a printed circuit board; and a cover part mounted on the retainer and disposed in front of the lens. The cover part comprises: a cover glass; a first reflection suppression layer disposed on the upper side of the cover glass; a heating layer disposed on the lower side of the glass cover; and a second reflection suppression layer disposed on the lower side of the heating layer.
    Type: Grant
    Filed: April 8, 2020
    Date of Patent: May 4, 2021
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Hyun Ho Choi, Kang Yeol Park, Sang Jun Park
  • Patent number: 10983593
    Abstract: Provided are wearable glasses including a display and a method of operating the same. The wearable glasses include: a display configured to display an image; a sensor configured to acquire wear state information representing a state in which a user currently wears the wearable glasses, while the image is being displayed on the display; and a processor configured to determine an inclination of the wearable glasses with respect to the user based on the acquired wear state information, and to adjust, based on the determined inclination, the image that is displayed on the display.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: April 20, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Kyung-Ho Jeong
  • Patent number: 10908430
    Abstract: According to some aspects, a medical imaging system is provided. The medical imaging system includes an illumination device and a medical imaging device. The illumination device includes a first light source configured to emit first light having a wavelength range. The illumination device further includes a second light source configured to emit second light having at least one predetermined wavelength band. The at least one predetermined wavelength band is within the wavelength range. The illumination device further includes a dichroic mirror configured to attenuate a portion of the wavelength range corresponding to the at least one predetermined wavelength band and to multiplex the second light with the first light such that the portion of the wavelength range of the first light is attenuated. The light multiplexed by the dichroic mirror is emitted from the illumination device along an optical axis and irradiates an observation site.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: February 2, 2021
    Assignee: Sony Corporation
    Inventors: Goh Matsunobu, Takashi Yamaguchi, Akio Furukawa
  • Patent number: 10877283
    Abstract: The present invention provides a light source module. The first light source forms the first beam from the second light source, the third light source, and the function of the first beam splitter. Then the second beam splitter reflects the first beam and transmits the fourth beam from the fourth light source for forming the mixed beam, which is received and projected by the optical processing device. Thereby, by using the high color rendering and special optical properties of the mixed beam, the applications and efficacy of the present invention can be improved.
    Type: Grant
    Filed: December 2, 2019
    Date of Patent: December 29, 2020
    Assignee: T.Q. Optoelectronics Co., Ltd.
    Inventors: Huan-Ping Chiu, Ji-Pin Wang, Juergen Mueller, Gerald Uhlenberg
  • Patent number: 10852472
    Abstract: Aspects described herein include an optical apparatus comprising at least a first Bragg grating of a first stage. The first Bragg grating is configured to transmit a first two wavelengths and to reflect a second two wavelengths of a received optical signal. The optical apparatus further comprises a second Bragg grating of a second stage. The second Bragg grating is configured to transmit one of the first two wavelengths and to reflect the other of the first two wavelengths. The optical apparatus further comprises a third Bragg grating of the second stage. The third Bragg grating is configured to transmit one of the second two wavelengths and to reflect the other of the second two wavelengths.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: December 1, 2020
    Assignee: Cisco Technology, Inc.
    Inventors: Tao Ling, Yi Ho Lee, Ravi S. Tummidi, Mark A. Webster
  • Patent number: 10802389
    Abstract: A first optical group that forms an intermediate image and a second optical group that enlarges and projects the intermediate image formed by the first optical group satisfy a variety of conditions. Therefore, first of all, in a case where a projection system is incorporated in a projector, an ultrawide field angle that allows enlargement and projection of an image at a half angle of view of 50° or greater is achieved. Further, an optical path deflection system including two optical path deflectors is disposed between the first optical group and the second optical group to allow the optical path to be folded with deterioration in performance of the projection system suppressed.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: October 13, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Nobutaka Minefuji
  • Patent number: 10805598
    Abstract: A wearable 3D augmented reality display and method, which may include 3D integral imaging optics.
    Type: Grant
    Filed: May 1, 2019
    Date of Patent: October 13, 2020
    Assignees: THE ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIVERSITY OF ARIZONA, THE UNIVERSITY OF CONNECTICUT
    Inventors: Hong Hua, Bahram Javidi
  • Patent number: 10746366
    Abstract: A light emitting device of an embodiment includes at least one light source; a wavelength conversion unit for converting the wavelength of excitation light so as to emit the excitation light having the converted wavelength as conversion light; a light transfer unit disposed on a light path between the at least one light source and the wavelength conversion unit for transferring the excitation light to the wavelength conversion unit; and a light-path controller moving at least a part of the light transfer unit so as to adjust at least one from among the direction and intensity of excitation light which enters the wavelength conversion unit.
    Type: Grant
    Filed: November 15, 2016
    Date of Patent: August 18, 2020
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Chang Gyun Son, Ki Cheol Kim, Kang Yeol Park
  • Patent number: 10634915
    Abstract: An image display device of the embodiment includes an image generation portion that emits image light, a prism optical element into which the image light enters, and a light guide optical system that guides the image light to the prism optical element. The prism optical element includes a prism member having a light refractive surface formed of a flat surface provided on a light incident side of the image light, and a concave mirror provided opposite the light refractive surface of the prism member and having a shape that is concave away from the light refractive surface.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: April 28, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Osamu Yokoyama
  • Patent number: 10606089
    Abstract: In various embodiments, wavelength beam combining systems feature multiple beam emitters each emitting an individual beam, as well as multiple micro-optics arrangements each disposed optically downstream from a beam emitter to intercept the beam emitted thereby and direct the beam toward a dispersive element for combination into a multi-wavelength output beam.
    Type: Grant
    Filed: May 30, 2018
    Date of Patent: March 31, 2020
    Assignee: TERADIODE, INC.
    Inventors: Parviz Tayebati, Bien Chann, Robin Huang, Wang-Long Zhou
  • Patent number: 10551527
    Abstract: A photonic diode includes a first meta-material structure having a first bar and a second meta-material structure having a second bar arranged in a direction perpendicular to the first bar. The first bar and the second bar are separated from each other. Further, the first bar and the second bar are at least partially overlapped when viewed from a light propagation direction.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: February 4, 2020
    Assignee: POSTECH Academy-Industry Foundation
    Inventors: Junsuk Rho, Minkyung Kim, Gwanho Yoon, Inki Kim
  • Patent number: 10551729
    Abstract: A projector includes a light-emitting device, a color wheel, a notch filter, a switching device, and a light controller. The light-emitting device is configured to emit a light. The color wheel is disposed on a path of the light and is configured to produce lights with different color wave bands. The notch filter has two cut-off waveband, and each is located between adjacent two of the color wavebands. The switching module is configured to move the notch filter to or away the path of the light. The light controller is electrically connected to the light-emitting device and the switching module, and is configured to control an intensity of the light emitted by the light-emitting device.
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: February 4, 2020
    Assignee: DELTA ELECTRONICS, INC.
    Inventor: Kuo-Tung Wu
  • Patent number: 10514549
    Abstract: In various embodiments, optical repositioners and/or angled dispersive elements are utilized to manipulate portions of an input laser beam emitted by a group of laser emitters in order to form a multi-wavelength output beam having a high beam quality factor.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: December 24, 2019
    Assignee: TERADIODE, INC.
    Inventors: Parviz Tayebati, Wang-Long Zhou, Bien Chann, Robin Huang, Michael Cruz
  • Patent number: 10241338
    Abstract: In various embodiments, a wavelength beam combining laser system includes a fast-axis collimation lens that is rotated with respect to a plurality of emitters in order to converge the emitted beams onto a dispersive element and/or reduce the size of the multi-wavelength output beam of the system.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: March 26, 2019
    Assignee: TERADIODE, INC.
    Inventors: Michael Deutsch, Daqing Wang, James Zambuto, Bien Chann, Bryan Lochman
  • Patent number: 10142030
    Abstract: An optical communication system that includes a data transmitter. The data transmitter includes at least one optical emission device configured to output light energy as an optical beam having an operating bandwidth; a beam dividing device arranged to receive and divide the operating bandwidth of the optical beam into bandwidth portions of plural communication bands; a focusing grating; and a digital mirror array having a plurality of digital mirrors. In an imaging mode, the optical communication system is configured to perform hyperspectral imaging by setting all of the plurality of digital mirrors to positions that transmit all wavelengths of a communication band among the plural communication bands to the focusing grating.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: November 27, 2018
    Assignee: BOOZ ALLEN HAMILTON INC.
    Inventors: Keith A. Blanks, Jason Aspiotis
  • Patent number: 10067351
    Abstract: In various embodiments, wavelength beam combining laser systems incorporate fast-axis collimation lenses and slow-axis collimation lenses (either separately or as portions of a single hybrid lens) optically upstream of an optical rotation system to thereby reduce or minimize cross-talk in the combined output beam.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: September 4, 2018
    Assignee: TERADIODE, INC.
    Inventors: James Zambuto, Parviz Tayebati, Bien Chann, Michael Deutsch, Daqing Wang, Bryan Lochman
  • Patent number: 9971161
    Abstract: An electromagnetic wave cloaking device is described. The device may include a plurality of first-type dielectric units, a plurality of second-type dielectric units, and a plurality of four kinds of spacers. The dielectric units and the spacers are arranged such that an electromagnetic wave incident into the cloaking device can be refracted within the device and around a cloaking area surrounded by the device.
    Type: Grant
    Filed: March 10, 2013
    Date of Patent: May 15, 2018
    Assignee: ZHEJIANG UNIVERSITY
    Inventors: Hongsheng Chen, Bin Zheng, Baile Zhang
  • Patent number: 9958613
    Abstract: A light divider includes a light guide having first and second surfaces that reflect light incident on the guide and cause the light to propagate through a portion between the first and second surfaces. A first light dividing layer on the second surface reflects part of the light having propagated through the guide and transmits part thereof so that the light is divided into light fluxes. A first transparent piece on the second surface in a position where the light that the first light dividing layer has transmitted is incident, the first transparent piece having a first reflection surface that reflects the incident light, a second transparent piece that is provided on the second surface in a position where the light reflected off the first light dividing layer and reflected off the first surface is incident, the second transparent piece has a second reflection surface that reflects the incident light.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: May 1, 2018
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Hidekazu Kobayashi, Hitoshi Ueno
  • Patent number: 9933612
    Abstract: A optical device comprises a colour wheel, the colour wheel having a hub portion configured to act as a rotor for coupling to a motor and having a disk-shaped surface; an optically active radial portion, attached to or integrated with the hub portion and configured to optically process incident light; and a balancing adaptation to the disk-shaped surface of the hub portion, comprising one or more of: (a) a recess in the disk-shaped surface extending to an edge of the disk-shaped surface; (b) an annular groove in the disk-shaped surface having a non-uniform width and/or being non-concentric with the disk-shaped surface; (c) an annular groove in the disk-shaped surface, at least a portion of which is filled by a balancing mass part; and (d) a groove and/or a matrix of recesses in the disk-shaped surface arranged to define a portion of an annulus in shape.
    Type: Grant
    Filed: August 15, 2017
    Date of Patent: April 3, 2018
    Assignee: MATERION CORPORATION
    Inventors: Xin Liu, Irene Xu, Simon Cao
  • Patent number: 9866806
    Abstract: A prism unit that combines light in the three primary colors of R, G, and B on the same optical axis includes: a G-reflecting dichroic coating that reflects G light and passes R and B light; and an RB dichroic coating that reflects one of R and B, and passes the other one of R and B, the prism unit satisfying the following conditional expression: ?rg??rb?0.67×?rg+0.33×?gb, where ?gb represents the wavelength at which the transmittance is 50% when the colors of G and B on the composite optical axis are combined, ?rg represents the wavelength at which the transmittance is 50% when the colors of R and G on the composite optical axis are combined, and ?rb represents the wavelength at which the transmittance is 50% when the colors of R and B on the composite optical axis are combined.
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: January 9, 2018
    Assignee: Konica Minolta, Inc.
    Inventors: Miyuki Teramoto, Yasumasa Sawai, Koji Takahara, Masahiro Terada
  • Patent number: 9846302
    Abstract: An optical see-through glass type display device comprises: an image projector projecting a virtual image; a first optical element configured to guide light of the virtual image; and a second optical element having a first reflection surface for reflecting back light coming through the front surface of the second optical element and a second reflection surface for retro-reflecting light coming through the rear surface of the second optical element. The second optical element is switchable between a first state in which the reflection on the first and second reflection surfaces is enabled and a second state in which the reflection on the first and second reflection surfaces is disabled.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: December 19, 2017
    Assignee: Thomson Licensing
    Inventors: Laurent Blonde, Valter Drazic
  • Patent number: 9817203
    Abstract: Various embodiments include methods, systems, and apparatus for optically aligning multiple sensors in a multi-sensor electro-optical (EO) system. Various embodiments include ways of aligning these sensors using a combination of optical elements.
    Type: Grant
    Filed: July 25, 2015
    Date of Patent: November 14, 2017
    Inventors: Arvind Lakshmikumar, Ankit Kumar, Vishal Dugar, Sridhar Srinivasan Iyengar
  • Patent number: 9810822
    Abstract: According to one aspect, the invention relates to an angular optical filtering element (Ei) optimized for angular filtering about a given operating angle of incidence (?i, 1) in a given spectral band. The angular filtering element (Ei) comprises a first nanostructured, band-pass, spectral filter (11i, 301) and a second nanostructured, band-pass, spectral filter (12i, 302). Each of the first and second spectral filters comprises, respectively, in said spectral band, a first and a second central filtering wavelength that respectively has a first and second angular dispersion curve defined depending on the angle of incidence (?inc) on the optical filtering element (Ei), the curves of angular dispersion being secant about the operating angle of incidence (?i, 1) of the optical filtering element. The invention applies to the production of a selective angular filtering device and to a multidirectional optical detection system.
    Type: Grant
    Filed: June 17, 2014
    Date of Patent: November 7, 2017
    Assignees: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE—CNRS, Office National d'Etudes et de Recherches Aérospatiales—ONERA
    Inventors: Emilie Sakat, Riad Haïdar, Jean-Luc Pelouard, Patrick Bouchon, Grégory Vincent
  • Patent number: 9746679
    Abstract: In various embodiments, a wavelength beam combining laser system includes a fast-axis collimation lens that is rotated with respect to a plurality of emitters in order to converge the emitted beams onto a dispersive element and/or reduce the size of the multi-wavelength output beam of the system.
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: August 29, 2017
    Assignee: TERADIODE, INC.
    Inventors: Michael Deutsch, Daqing Wang, James Zambuto, Bien Chann, Bryan Lochman
  • Patent number: 9559234
    Abstract: Disclosed is a solar cell apparatus. The solar cell apparatus includes a substrate including a transmission area and a non-transmission area extended in one direction, respectively, and disposed in parallel to each other, a solar cell disposed in the non-transmission area, and a refractive part provided in the transmission area and refracting at least a portion of an incident light to the non-transmission area.
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: January 31, 2017
    Assignee: LG INNOTEK CO., LTD.
    Inventor: Dong Keun Lee
  • Patent number: 9329388
    Abstract: A heads-up display includes a display region disposed in or on a substantially transparent substrate. The display region includes an array of reflective scattering elements and interstitial regions disposed between adjacent ones of the reflective scattering elements. The interstitial regions are substantially transparent to pass external light through the substrate. A light source is positioned to direct light onto the display region of the substrate such that an image generated by the light directed onto the display region is visible.
    Type: Grant
    Filed: January 6, 2012
    Date of Patent: May 3, 2016
    Assignee: Google Inc.
    Inventor: Babak Amirparviz
  • Patent number: 9307209
    Abstract: A lighting system for a digital cinema projection apparatus is provided. The lighting system includes an ultra high pressure mercury lamp, a relay lens group, a digital micro display module, an optical filter module, and a projection lens. The ultra high pressure mercury lamp is used for emitting a light beam. The relay lens group is used for receiving the light beam and adjusting an optical path of the light beam. The optical filter module is arranged along the optical path of the lighting system for optically modulating an optical spectrum and/or a white balance of the light beam from the ultra high pressure mercury lamp. The projection lens is used for projecting the modulated light beam as an image beam.
    Type: Grant
    Filed: August 21, 2013
    Date of Patent: April 5, 2016
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Bor Wang, Chien-Hao Hua
  • Patent number: 9279971
    Abstract: An optical modulator device (100), in particular for a spatio-temporally light modulated imaging system (200), comprises a light modulating micro-mirror device (110) comprising an array of mirror elements (111) arranged in a modulator plane (112), wherein each of the mirror elements (111) can be switched individually between first (111a) and second (111b) states with first and second tilting angles, resp., relative to a modulator optical axis (113) perpendicular to the modulator plane (112), and a first optical relaying device (120) being arranged for relaying light between the mirror elements (111) in the first (111a) state and a first optical axis (121) deviating from the modulator optical axis (113), wherein the first optical relaying device (120) includes a first group of imaging elements (122, 123, 124) being formed such that a planar light field (114) perpendicular to the modulator optical axis (113) is relayed to a first planar light field (125) perpendicular to the first optical axis (121).
    Type: Grant
    Filed: March 18, 2011
    Date of Patent: March 8, 2016
    Assignee: MAX-PLANCK-GESELLSCHAFT ZUR FOERDERUNG DER WISSENSCHAFTEN E.V.
    Inventors: Thomas M. Jovin, Wouter Caarls, Anthony De Vries
  • Patent number: 9188820
    Abstract: An optical filter or valve comprises autonomously tunable liquid crystal filters in which photoactivated materials such as a photoconductive and photovoltaic substrates or films are used to produce or control application of an electric field to a liquid crystal material to tune the liquid crystal material to the wavelength of the incident light or radiation that is illuminating the filter thereby enabling the filter to automatically and autonomously filter the incident light or radiation.
    Type: Grant
    Filed: June 10, 2010
    Date of Patent: November 17, 2015
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Dean R. Evans, Gary Cook
  • Patent number: 9091860
    Abstract: Systems and methods configured for outputting light having a polarization state distribution that is spatially uniform by applying a correction to, for example, a beam of light with a spatially uniform polarization state distribution that has been altered (unintentionally or otherwise) to become spatially non-uniform are described. A projection system can include an optical element and a polarization-altering device (PAD). The optical element can cause a polarization of light in the projection system to be spatially non-uniform. The PAD can change the polarization state distribution of the light spatially based on an amount of spatial non-uniformity on the light caused by the optical element and before the light enters the optical element. The projection system can output the light having a spatially uniform polarization state distribution.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: July 28, 2015
    Assignee: IMAX Corporation
    Inventors: Steven Charles Read, John William Bowron
  • Publication number: 20150146302
    Abstract: A lighting device may include at least one light source arrangement for generating primary light; at least one light wavelength conversion element for converting primary light into secondary light; and a filter apparatus disposed optically downstream of the at least one light wavelength conversion element and serving for filtering out primary light. The at least one light source arrangement and the at least one light wavelength conversion element are embodied or correspondingly embodied light directing means are provided in such a way that part of the primary light generated by the at least one light source arrangement impinges on the at least one light wavelength conversion element and part of the primary light generated by the at least one light source arrangement is directed past the at least one light wavelength conversion element.
    Type: Application
    Filed: October 28, 2014
    Publication date: May 28, 2015
    Inventors: Oliver Hering, Juergen Hager, Stephan Schwaiger
  • Publication number: 20150138643
    Abstract: An optical component has a ceramic member and a dichroic film. The ceramic member is provided with a first main surface and a second main surface that is opposed to the first main surface. The ceramic member has translucency. The ceramic member has a plurality of crystal grains that are mutually bonded to one another through grain boundary portions. The dichroic film is formed on the first main surface of the ceramic member.
    Type: Application
    Filed: November 17, 2014
    Publication date: May 21, 2015
    Inventors: Masaru NOMURA, Tsuneaki OHASHI, Kazuyoshi SHIBATA, Shoichiro YAMAGUCHI
  • Patent number: 9022580
    Abstract: This invention realizes an illumination optical system with a small etendue that has a longer lifetime and a high degree of brightness. The invention includes: a laser light source that generates excitation light; a phosphor that generates a fluorescent light by means of the excitation light; a light tunnel that projects the excitation light that is incident at one end towards the phosphor from another end, and projects a fluorescent light generated with the phosphor from the one end; and a dichroic mirror that is provided between the laser light source and the light tunnel, and that allows the fluorescent light or the excitation light to pass through, and reflects the remaining excitation or fluorescent light.
    Type: Grant
    Filed: January 29, 2010
    Date of Patent: May 5, 2015
    Assignee: NEC Display Solutions, Ltd.
    Inventors: Hiroyuki Saitou, Atsushi Katou, Motoyasu Utsunomiya, Akihiro Osaka, Masateru Matsubara
  • Publication number: 20150116838
    Abstract: Known semiconductor wafer process technologies are used to manufacture an optical MUX/DeMUX with very precise dimensional control. The manufacturing process eliminates the need to polish optical surfaces of the MUX/DeMUX, which reduces the overall manufacturing costs and the amount of time that is required to manufacture the MUX/DeMUX.
    Type: Application
    Filed: October 31, 2013
    Publication date: April 30, 2015
    Applicant: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Tak Kui Wang, Ye Chen, Frank Yashar
  • Publication number: 20150102722
    Abstract: The present invention provides a wavelength conversion board comprising a substrate; one or more fluorescence members each containing a fluorescence substance for converting excitation light into fluorescence, the fluorescence member being disposed on or above the substrate; and a flexible gel disposed around the fluorescence member. The present invention also provides a wavelength conversion board comprising a substrate; a fluorescence member containing fluorescence substance for converting excitation light into fluorescence, the fluorescence member being disposed on or above the substrate; a fluent material disposed around the fluorescence member; a light-transmissive plate parallel to the substrate; and a sealing member disposed around the fluent material in a cross section of the wavelength conversion board. The fluorescence member is interposed between the light-transmissive plate and the substrate in the cross section of the wavelength conversion board.
    Type: Application
    Filed: September 10, 2014
    Publication date: April 16, 2015
    Inventors: TAKASHI OHBAYASHI, SEIGO SHIRAISHI, YOSHIHISA NAGASAKI, MITSURU NITTA
  • Patent number: 9007695
    Abstract: A spectral image sensor device comprises a first optical system 47 and 48 including an objective lens, a luminous fluxes selecting member 55 for allowing a part of the luminous fluxes to pass via the first optical system selectively, an optical member 58 where the luminous fluxes selecting member is disposed so as to be at focal position on an object side or approximately at focal position on an object side, and an interference membrane is formed, and wavelength range of the luminous fluxes for passing through the luminous fluxes selecting member is selected, depending on position of the luminous fluxes selecting member, a second optical system 49 for guiding the luminous fluxes toward the optical member, and an image sensor 52 for receiving a light in wavelength range as selected by the optical member.
    Type: Grant
    Filed: September 25, 2012
    Date of Patent: April 14, 2015
    Assignee: Kabushiki Kaisha TOPCON
    Inventors: Fumio Ohtomo, Masayuki Momiuchi, Kazuki Osaragi, Hitoshi Otani
  • Patent number: 9008521
    Abstract: Provided is an optical receiver including a first delay interferometer, a second delay interferometer, and an input light splitting portion for inputting modulated light. The first delay interferometer includes a first light splitting portion for splitting the input light into first light and second light, a first reflecting portion and a second reflecting portion for causing the first light and the second light to return to the first light splitting portion. The second delay interferometer includes a second light splitting portion for splitting the input light into third light and fourth light, a third reflecting portion and a fourth reflecting portion for causing the third light and the fourth light to return to the second light splitting portion. A region between the first light splitting portion and the second reflecting portion intersects with a region between the second light splitting portion and the fourth reflecting portion.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: April 14, 2015
    Assignee: Oclaro Japan, Inc
    Inventors: Koki Iemura, Takuma Ban, Hideharu Mikami, Kentaro Osawa
  • Patent number: 8988779
    Abstract: An optical system and method for combining multiple beams along a single light path is disclosed. In a preferred embodiment, a plurality of bandpass filters are arranged about the sides of a regular pentagon, the band pass filters being reflective of light wavelengths outside of the bandpass range. A plurality of light sources are positioned such that light from a source passes through an associated bandpass filter, preferably at an angle of about 18°. Light from the first light source passes out of the pentagonal housing after passing through the filter. Light from the other light sources are reflected off of the interior surfaces filters so as to combine with the light from the first light source.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: March 24, 2015
    Assignee: Sutter Instrument Company
    Inventor: Jack H. Belgum