Wavelength Selective (e.g., Dichroic Mirror, Etc.) Patents (Class 359/634)
  • 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: 8988564
    Abstract: A digital camera component is described that has a light splitter cube having an entrance face to receive incident light from a camera scene. The cube splits the incident light into first, second, and third color components that emerge from the cube through a first face, a second face, and a third face of the cube, respectively. First, second, and third image sensors are provided, each being positioned to receive a respective one of the color components that emerge from the first, second, and third faces of the cube. Other embodiments are also described and claimed.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: March 24, 2015
    Assignee: Apple Inc.
    Inventors: Steven Webster, Ning Y. Chan
  • 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
  • Publication number: 20150076808
    Abstract: An identification film and pattern having high transparency and a reflectance spectrum with respect to a particular wavelength and including photonic crystals patterned into a particular shape and an anticounterfeiting product including the same are disclosed. A highly transparent colloidal photonic crystal film is easily manufactured using photocurable colloidal suspensions. Even though a plurality of patterns (including sub-patterns) is formed in plural films, there is no reduction in optical characteristics such as transparency, reflectance spectra, and the like. Thus, a film patterned into a desired shape is manufactured and thus usability thereof is enhanced, and a plurality of reflectance spectra with various wavelength ranges is provided and thus identification capability or security is enhanced.
    Type: Application
    Filed: July 11, 2014
    Publication date: March 19, 2015
    Inventors: Shin Hyun Kim, Seung Man Yang, Hye Soo Lee, Tae Soup Shim
  • Publication number: 20150070774
    Abstract: A diode laser module includes a laser diode (1), an anamorphic prism pair (5) consisting of a pair of prisms (3, 4) having mutually different apex angles and/or made of material having mutually different refractive indices, and a partial reflective mirror (6; 16) disposed on a side of the anamorphic prism pair away from the laser diode and having a planar or spherical surface facing the anamorphic prism pair and coated with partial reflective coating (6a; 16a). The wavelength of the laser output can be changed by adjusting the position of the partial reflective mirror.
    Type: Application
    Filed: February 26, 2014
    Publication date: March 12, 2015
    Applicant: SHOWA OPTRONICS CO., LTD.
    Inventors: Minoru Kadoya, Atsushi Masui
  • Patent number: 8970949
    Abstract: An optical body includes a first optical layer having a concave-convex surface, a wavelength-selective reflecting layer formed on the concave-convex surface, and a second optical layer formed on the wavelength-selective reflecting layer to embed the concave-convex surface, the wavelength-selective reflecting layer having a multilayer structure formed by successively stacking at least a first high refractive index layer, a metal layer, and a second high refractive index layer, wherein, given that optical film thicknesses of the first high refractive index layer and the second high refractive index layer are x and y, respectively, and a geometrical film thickness of the metal layer is z, x, y and z satisfy the following formula (1): z ? 12.1 ? exp ? { - 1 2 ? ( x - 120 145.17 ) 2 - 1 2 ? ( y - 120 123.
    Type: Grant
    Filed: June 8, 2011
    Date of Patent: March 3, 2015
    Assignee: Dexerials Corporation
    Inventors: Masaki Suzuki, Tsutomu Nagahama, Hiroya Takenaka, Masashi Enomoto
  • Patent number: 8961403
    Abstract: A fluorescence endoscopy video system includes a multimode light source that produces light for color and fluorescence imaging modes. Light from the light source is transmitted through an endoscope to the tissue under observation. The system also includes a compact camera for color and fluorescence imaging. Images obtained through the endoscope are optically divided and projected onto one or more image sensors by a fixed beam splitter in the camera. The fixed beam splitter eliminates the need for inserting a movable mirror into the light path between the endoscope and the image sensors. Image signals from the camera are processed in the system processor/controller where a contrast enhancement function can be applied. The contrast enhancement function increases the color contrast between normal tissue and tissue suspicious for early cancer. Finally, the system also includes a calibration feature whereby the system performance can be maintained when used with different endoscopes.
    Type: Grant
    Filed: April 16, 2010
    Date of Patent: February 24, 2015
    Assignee: Novadaq Technologies Inc.
    Inventors: Richard W. Cline, John J. P. Fengler, Joachim W. Boehm
  • Publication number: 20150049334
    Abstract: A method of aligning an upper substrate and a lower substrate is provided. The upper and lower substrates are oppositely arranged, and the aligning method includes the following steps: providing an optical image capturing module; emitting light rays to a third surface of a first prism; filtering the light rays, so that the light rays are divided into light rays at the first wavelength range and light rays at the second wavelength range, wherein the light rays at the first wavelength range irradiate a pattern on the upper substrate, and light rays at the second wavelength range irradiate a pattern on the lower substrate; reflecting a pattern image on the upper substrate to an image capturing apparatus; reflecting a pattern image on the lower substrate to the image capturing apparatus; and determining locations of the patterns of the upper and lower substrate that are on the image capturing apparatus.
    Type: Application
    Filed: August 8, 2014
    Publication date: February 19, 2015
    Inventors: SHI-WEI LIN, CHUN-MING YANG, CHIH-CHIN WEN, CHORNG-TYAN LIN
  • Patent number: 8955975
    Abstract: A method is provided that includes providing a light source having a light emitting diode (LED) that emits a light. A polarization conversion system (PCS) is located adjacent the LED and has both a linear polarizer and a wave plate. A polarizing beam splitter (PBS) is adjacent the light source and an imaging device is adjacent the PBS. The wave plate of the PCS is rotated to a first position, and a first light is emitted by the LED in the first light source. This first light is converted to circular polarization. This first light travels to the PBS where it is reflected onto the imaging device. The wave plate is then rotated to a second position, and a second light is emitted by the light source. This second light is converted to circular polarization and reflects from the PBS onto the imaging device.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: February 17, 2015
    Assignee: International Business Machines Corporation
    Inventor: Casimer M. DeCusatis
  • Publication number: 20150009576
    Abstract: A system, apparatus, and method may provide laser beams of two or more wavelengths from diode pumped solid-state laser sources (220, 222, 224). The beam paths of these laser beams with different wavelengths, which are generated by the laser sources (220, 222, 224), may be aligned along a common optical axis 280 by an optical configuration, to treat at least one target area. Frequency-doubled laser beams, output from a plurality of diode pumped solid state laser cavities, may be passed through fold mirrors (M2, M5, M8), and combined on a common optical axis 280, using one or more combiner mirrors (M10, M11, M12), to unify the beam paths. Selected laser beams may be delivered to a target using one or more delivery systems.
    Type: Application
    Filed: July 3, 2014
    Publication date: January 8, 2015
    Inventors: David Haydn Mordaunt, Steven Scott Christensen, Allison Albrecht Ferro, David A. Dewey
  • Patent number: 8908281
    Abstract: Embodiments of the present invention provide an optical splitting device, an optical multiplexing device and method, and an optical add-drop multiplexer, which relate to the technical field of communications, and are invented for improving the performance and decreasing the cost. The optical splitting device includes a substrate, where an anti-reflective coating is disposed on an upper surface of the substrate and a filter membrane is disposed at a lower surface of the substrate; and further includes a light redirecting portion disposed opposite to the filter membrane. An optical signal is incident to the filter membrane at a first specified angle, a light wave of a first wavelength in the optical signal penetrates the filter membrane, so that the light wave of the first wavelength is separated from the optical signal.
    Type: Grant
    Filed: November 20, 2012
    Date of Patent: December 9, 2014
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Zhenghua Fu
  • Publication number: 20140340760
    Abstract: A beam combining device for combining light from a first light source and light from a second light source of a light-source device for a medical apparatus includes a body made of a transparent material, a face which reflects in at least either a dichroic or polarization-dependent manner and is situated in or on the body, which face is transparent to light having a first spectrum or a first polarization and reflects light having a second spectrum or a second polarization, and a light-entrance face on the body, which light-entrance face is provided and arranged so that light enters the beam combining device through the light-entrance face. At least either the light-entrance face or the face reflecting in a dichroic or polarization-dependent manner is curved.
    Type: Application
    Filed: May 19, 2014
    Publication date: November 20, 2014
    Inventors: Harald Baumann, Bernhard Gloeggler, Werner Goebel
  • Publication number: 20140334009
    Abstract: A method for manufacturing an optical element includes forming a functional layer (half mirror layer) on a first face of a first translucency member that is made of cyclo olefin polymer or cyclo olefin copolymer, and forming an inorganic coating layer having translucency (silicon oxide layer) on a second face of a second translucency member that is made of cyclo olefin polymer or cyclo olefin copolymer. The method for manufacturing an optical element further includes bonding the first face side of the first translucency member to the second face side of the second translucency member by an adhesive layer.
    Type: Application
    Filed: May 12, 2014
    Publication date: November 13, 2014
    Applicant: Seiko Epson Corporation
    Inventor: Kazuhiro Ushiyama
  • Patent number: 8873149
    Abstract: Technology is described for a projection optical system which optically couples image light from an image source to a near-eye display (NED) of a wearable near-eye display device. The projection optical system and the image source make up a projection light engine. Light from the image source is directed to a birdbath reflective optical element which is immersed in high index glass. The image light is reflected and collimated by the birdbath element and travels outside a housing of the projection light engine forming an external exit pupil, meaning the exit pupil is external to the projection light engine. A waveguide optically couples the image light of the external exit pupil. An example of a waveguide which can be used is a surface relief grating waveguide.
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: October 28, 2014
    Inventors: David D. Bohn, Ned Nestorovic, Steve J. Robbins
  • Publication number: 20140307325
    Abstract: An improved filter wheel is disclosed, through embodiments, that comprises a plurality of reflector support structures formed as a unitized structure with a circular base member. In some embodiments, the filter wheel further comprises a plurality of light sources mounted on the filter wheel.
    Type: Application
    Filed: June 27, 2014
    Publication date: October 16, 2014
    Applicant: Ikonisys, Inc.
    Inventors: Triantafyllos Tafas, Michael Thomas
  • Patent number: 8854736
    Abstract: An optical body includes a first optical layer having a concave-convex surface, a wavelength selective reflecting layer formed on the concave-convex surface, and a second optical layer formed on the wavelength selective reflecting layer and embedding the concave-convex surface. The wavelength selective reflecting layer selectively directionally reflects light in a particular wavelength band while transmitting light other than the particular wavelength band therethrough. The concave-convex surface is made up of a plurality of triangular pillars arrayed in a one-dimensional pattern, and the triangular pillar has an apex angle ? and a slope angle ?, the apex angle ? and the slope angle ? satisfying a predetermined relationship.
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: October 7, 2014
    Assignee: Dexerials Corporation
    Inventors: Hironori Yoshida, Tsutomu Nagahama, Masashi Enomoto
  • Publication number: 20140293436
    Abstract: An optical element is provided with an optical layer in which a concavo-convex surface is formed on the surface thereof, and a wavelength-selective reflection layer formed on the concavo-convex surface. The wavelength-selective reflection layer directionally reflects light having a specific wavelength band selectively, while transmitting light having wavelength bands other than the specific wavelength band. The concavo-convex surface is provided with a plurality of first structural elements that are extended in a first direction within the surface of the optical layer and a plurality of second structural elements that are extended in a second direction within the surface of the optical layer, and placed to be spaced apart from each other, with the first direction and the second direction intersecting with each other.
    Type: Application
    Filed: August 24, 2012
    Publication date: October 2, 2014
    Applicant: DEXERIALS CORPORATION
    Inventors: Tsutomu Nagahama, Atsushi Shibuya
  • Patent number: 8845109
    Abstract: A projection system based on self emitting display panels is described, in which the projection technology involves organic/inorganic electroluminescent display panels with spatially separated color segments. The color pictures are shown in three spatially separate segments. A color combination mechanism, such as dichroic mirrors, are used to merge the three color pictures to a color picture. One of the advantages of the present invention is that only the on state pixel is driven to a bright state that uses energy. The off state pixel need not be driven to a bright state and therefore the energy consumption is virtually nothing. Another advantage is that the system does not require a separate light source and display panel. Therefore the projection system can be made very compact, which is extremely useful for portable projection systems.
    Type: Grant
    Filed: November 21, 2008
    Date of Patent: September 30, 2014
    Inventor: Yong-Jing Wang
  • Patent number: 8842369
    Abstract: An apparatus for combining light from multiple laser sources has a first laser array to emit beams of a first wavelength in parallel and in a first plane and a second laser array to emit beams of a second wavelength in parallel with emitted beams in the first laser array. A beam combiner on a transparent body has a rear surface and an incident surface at an oblique angle to the first plane. Intersection of the incident surface with the first plane is oblique to the emitted beams. The beam combiner has a first coating on the incident surface that intersects the first plane and transmits the first wavelength. A rear reflective coating reflects first and second wavelengths. A second coating on the incident surface is coplanar with the first coating and transmits the second wavelength and reflects the first wavelength. A third coating reflects first and second wavelengths.
    Type: Grant
    Filed: November 19, 2012
    Date of Patent: September 23, 2014
    Assignee: Corning Incorporated
    Inventor: Jin Li
  • Patent number: 8840253
    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: Grant
    Filed: March 21, 2012
    Date of Patent: September 23, 2014
    Assignee: Panasonic Corporation
    Inventor: Hiroshi Kitano
  • Patent number: 8830587
    Abstract: An apparatus for providing pump light of a first wavelength ?1 to a laser that emits a second wavelength ?2 has first and second lasers of the wavelength ?1 to direct light along first and second axes in a first direction. The first and second axes define a first plane P1. To form a composite light beam of wavelength ?1, a filter apparatus has a first filter on a first surface at an oblique angle to the first and second axes and that transmits ?1 and reflects ?2. A second filter on a second surface parallel to the first surface, reflects ?1 and transmits ?2. A third filter formed on the first surface coplanar with the first filter reflects ?1 and transmits ?2. The filter apparatus re-aligns the first and second axes along a second plane P2, orthogonal to P1 and parallel to the first direction.
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: September 9, 2014
    Assignee: Corning Incorporated
    Inventors: Vikram Bhatia, Joshua Monroe Cobb
  • Publication number: 20140247479
    Abstract: A molded dichroic mirror and method of manufacture thereof. The dichroic minor may be molded from polysiloxane or lithia potash borosilicate and may be coated to reflect an infrared signal and configured to transmit a radio frequency signal between 33 GHz and 37 GHz.
    Type: Application
    Filed: October 9, 2013
    Publication date: September 4, 2014
    Applicant: RAYTHEON COMPANY
    Inventors: Byron B. Taylor, W. Howard Poisl
  • Patent number: 8824055
    Abstract: A multi-band refractive optical imaging system. In one example, the system includes a plurality of lenses configured to receive and propagate electromagnetic radiation in at least the visible spectral band and the longwave infrared (LWIR) spectral band, the plurality of lenses including a first group of lenses of a first crown material, at least one lens of a first flint material, and at least one lens of a second material different than the first crown material and the first flint material. The plurality of lenses includes at least one crown-flint pair configured as an achromat to provide color correction in the visible and/or LWIR spectral bands. The system also includes a first beamsplitter configured to separate the electromagnetic radiation into the visible spectral band and the LWIR spectral band, and a rear external aperture stop positioned between the plurality of lenses and the first beamsplitter.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: September 2, 2014
    Assignee: Raytheon Company
    Inventor: Lacy G. Cook
  • Publication number: 20140240831
    Abstract: A system and method for stabilizing WBC systems utilizing retro reflectors.
    Type: Application
    Filed: November 29, 2013
    Publication date: August 28, 2014
    Applicant: TERADIODE, INC.
    Inventor: Bien Chann
  • Publication number: 20140219608
    Abstract: Waveguide array optical power splitters that provide compact, low-cost implementation of optical power splitting for one and two dimensional optical waveguide arrays are disclosed. The optical power splitters do not introduce mode dependent loss and preserve polarization, enabling the optical power splitters to be used with multimode and single mode light sources. In one aspect, an optical power splitter includes a beamsplitter to receive a plurality of incident beams of light. The beamsplitter splits each incident beam of light into a plurality of output beams of light with each output beam output in a different direction from the beamsplitter. The optical power splitter includes a first set of lenses with each lens to approximately collimate one of the incident beams of light, and includes a second set of lenses with each lens to focus the output beams of light.
    Type: Application
    Filed: July 29, 2011
    Publication date: August 7, 2014
    Inventors: Wayne V Sorin, Michael Renne Ty Tan, Sagi Varghese Mathai, Paul Kessler Rosenberg, Georgios Panotopoulos
  • Patent number: 8764644
    Abstract: An endoscope light source unit comprising: a first light source section emitting a first illumination light composed of white light; a second light source section emitting a second illumination light orthogonally to a direction in which the first illumination light travels; a light combining member transmitting the first illumination light through a transmission section and, at the same time, reflecting the second illumination light by means of a reflection section to form a combined light so that a beam of the second illumination light may be located in a central part of a beam of the first illumination light; a shaping lens for modifying the beam of the second illumination light emitted; and a condenser lens for converging the combined light.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: July 1, 2014
    Assignee: FUJIFILM Corporation
    Inventor: Osamu Kuroda
  • Publication number: 20140168785
    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: Application
    Filed: December 14, 2012
    Publication date: June 19, 2014
    Applicant: Sutter Instrument Company
    Inventor: Jack H. Belgum