Filter Having Four Or More Layers Patents (Class 359/588)
  • Patent number: 11675108
    Abstract: An optical element (200), has a first surface configured to convey light, a second surface configured to convey light, an optical path between the first surface and the second surface, a filter coating (230) applied to the first surface, and a colour corrected anti-reflection (AR) coating (240) with colour correcting and antireflection characteristics applied to the second surface. The AR coating is configured according to an antireflective function to maximise photopic transmission and/or, integrated visual photopic transmission (IVPT) of the optical path. The second surface is disposed opposite the first surface, and the antireflective function is determined according to a daylight emission a I(?), a transmission spectrum of the antireflection/colour corrective coating T(?) and a thickness a d(?), of the film for a specified wavelength.
    Type: Grant
    Filed: February 21, 2020
    Date of Patent: June 13, 2023
    Assignee: Qioptiq Limited
    Inventor: Jonathan Williams
  • Patent number: 11630243
    Abstract: Durable and scratch resistant articles including low-reflectance optical coating with gradient portion. In some embodiments, an article comprises: a substrate comprising a first major surface; and an optical coating disposed over the first major surface. The optical coating comprises: a second major surface; a thickness; and a first gradient portion. A refractive index of the optical coating varies along a thickness of the optical coating. The difference between the maximum refractive index of the first gradient portion and the minimum refractive index of the first gradient portion is 0.05 or greater. The absolute value of the slope of the refractive index of the first gradient portion is 0.1/nm or less everywhere along the thickness of the first gradient portion. The article exhibits a single side photopic average light reflectance of 3% or less, and a maximum hardness from 10 GPa to 30 GPa.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: April 18, 2023
    Assignee: Corning Incorporated
    Inventors: Robert Alan Bellman, Shandon Dee Hart, Karl William Koch, III, Carlo Anthony Kosik Williams, Charles Andrew Paulson, James Joseph Price
  • Patent number: 11573371
    Abstract: A lightguide optical element (LOE) configured for polarization scrambling is provided. The LOE includes a transparent substrate having a first refractive index, the substrate having a pair of parallel external surfaces configured to propagate light within the LOE through total internal reflection (TIR), and a plurality of mutually parallel partially reflective internal surfaces, those being non-parallel to the pair of parallel external surfaces and configured to couple out said light to a viewer. The LOE further includes a first coating on at least one external surface of the substrate, the first coating being of a coating material having a second refractive index higher than the first refractive index; The LOE further includes an antireflective (AR) coating on at least one external surface of the substrate over the first coating.
    Type: Grant
    Filed: November 10, 2020
    Date of Patent: February 7, 2023
    Assignee: Lumus Ltd.
    Inventors: Motke Gilo, Tsion Eisenfeld, Yochay Danziger
  • Patent number: 11536876
    Abstract: Provided are a composite membrane, a touchpad and a display device. The composite membrane includes a first graded-refractive-index layer, a first dielectric layer and a second graded-refractive-index layer which are stacked in sequence; where the first graded-refractive-index layer includes at least two first sub-layers, and the second graded-refractive-index layer includes at least two second sub-layers; in a direction from the first graded-refractive-index layer to the first dielectric layer, refractive indexes of first sub-layers sequentially increase, and refractive indexes of second sub-layers sequentially decrease; a refractive index of a first sub-layer adjacent to the first dielectric layer is less than or equal to a refractive index of the first dielectric layer; and a refractive index of a second sub-layer adjacent to the first dielectric layer is less than or equal to the refractive index of the first dielectric layer.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: December 27, 2022
    Assignee: Shanghai Tianma Micro-Electronics Co., Ltd.
    Inventors: Yuefeng Gu, Jun Zhou, Ruifen Fu, Jiandong Wang
  • Patent number: 11442206
    Abstract: A pixelated filter intended to rest on a support and including, in a stacking direction: first filter pixels each including a first interference filter covered with a first dielectric block; and second filter pixels each including a second dielectric block, having a thickness greater than or equal to the thickness of the first interference filter, covered with a second interference filter, having a thickness smaller than or equal to the thickness of the first dielectric block, wherein, for at least one of the second filter pixels, the second dielectric block of the second filter pixel is interposed between the first interference filters of two first filter pixels and the second interference filter of the second filter pixel is interposed between the first dielectric blocks of the first two filter pixels.
    Type: Grant
    Filed: June 6, 2019
    Date of Patent: September 13, 2022
    Assignee: Commissariat à l'Énergie Atomique et aux Énergies Alternatives
    Inventors: Laurent Frey, Lilian Masarotto
  • Patent number: 11428967
    Abstract: A cover window of a display device includes: a transparent layer; a light blocking layer disposed on the transparent layer, the light blocking layer defining an opening therein, the opening exposing a portion of the transparent layer which corresponds to a sensor of the display device; and an anti-pollution layer disposed corresponding to the portion of the transparent layer which corresponds to the sensor of the display device and is exposed by the opening. The anti-pollution layer has a surface energy lower than each of a surface energy of the transparent layer and a surface energy of the light blocking layer.
    Type: Grant
    Filed: September 10, 2019
    Date of Patent: August 30, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Sujin Sung
  • Patent number: 11237310
    Abstract: A display component includes a transflective layer, a reflective layer, and at least one sidewall. The reflective layer is arranged opposing to the transflective layer, and the at least one sidewall is arranged between the reflective layer and the transflective layer. The transflective layer, the reflective layer, and the at least one sidewall are together configured, upon an input of an incident light through the transflective layer, to output a light of a target color out through the transflective layer. One or more of the at least one sidewall comprise at least one light-conversion layer configured to emit a light of the target color upon excitement by a light of a different color shedding thereupon. The display component can be configured to output a red light, a green light, or a blue light.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: February 1, 2022
    Assignees: BEIJING BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Meili Wang, Xue Dong, Ming Zhu
  • Patent number: 11226482
    Abstract: In various embodiments, a pancake lens block (e.g., a reverse order crossed pancake lens block) including azimuthal compensation may include an optical element configured to transmit at least a portion of light emitted by an electronic display. The pancake lens block may further include an azimuthal compensator coupled to a surface of the optical element. Moreover, the azimuthal compensator may include a uniaxial birefringent material, and the azimuthal compensator may be configured to reduce an optical effect of stress birefringence in the optical element.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: January 18, 2022
    Assignee: Facebook Technologies, LLC
    Inventor: Gary Dean Sharp
  • Patent number: 11215741
    Abstract: A filter may include a first component filter associated with a first angle shift and a first passband. The filter may include a second component filter associated with a second angle shift and a second passband, wherein the first angle shift, the first passband, the second angle shift, and the second passband are configured to make the filter transmissive to a spectral range of light at a first angle of incidence and reflective to the spectral range of light at a second angle of incidence.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: January 4, 2022
    Assignee: VIAVI Solutions Inc.
    Inventors: Richard A. Bradley, Jr., Tim Gustafson
  • Patent number: 11131862
    Abstract: A dichroic prism beamsplitter may include a medium with a refractive index greater than approximately 1.0. The dichroic prism beamsplitter may include a plurality of layers sandwiched by the medium. The plurality of layers may include an equivalent structure including at least one layer with a refractive index that is less than a threshold refractive index for total internal reflection. The at least one layer may be associated with a thickness less than or equal to a threshold thickness associated with total internal reflection for a threshold wavelength. The at least one layer may cause total internal reflection for a first wavelength range that is less than or equal to the threshold wavelength and causes evanescent wave coupling for a second wavelength range that is greater than the threshold wavelength.
    Type: Grant
    Filed: July 3, 2018
    Date of Patent: September 28, 2021
    Assignee: VIAVI Solutions Inc.
    Inventors: Karen Denise Hendrix, Warren Hendricks
  • Patent number: 11091671
    Abstract: A high-refractive adhesive film includes: a thermosetting resin matrix; and high refractive particles dispersed in the thermosetting resin matrix. The refraction index of the high-refractive particles is higher than that of the thermosetting resin matrix.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: August 17, 2021
    Inventors: Chan-Oh Yoon, Sung-Chan Park, Jang-Soon Kim, Eun-Kyung Park, Bu-Gi Jung, Won-Ho Kim
  • Patent number: 11041982
    Abstract: An optical filter may include a substrate. An optical filter may include a set of optical filter layers disposed onto the substrate. The set of optical filter layers including a first subset of optical filter layers. The first subset of optical filter layers may include a silicon-germanium (SiGe) with a first refractive index. An optical filter may include a second subset of optical filter layers. The second subset of optical filter layers may include a material with a second refractive index. The second refractive index being less than the first refractive index.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: June 22, 2021
    Assignee: VIAVI Solutions Inc.
    Inventor: Georg J. Ockenfuss
  • Patent number: 10983367
    Abstract: The invention relates to an ophthalmic lens (1), in particular for sunglasses, comprising: a first outer layer (9) of transparent substrate, comprising a rear face (9AR), intended to be orientated towards the eye of a user of said ophthalmic lens (1), and a front face (9AV) intended to be orientated towards the field of vision (13) of the user, intended to form the convex, front outer surface of the ophthalmic lens (1), a second outer layer (10) of transparent substrate, comprising a rear face (10AR) orientated towards the eye of the user, intended to form the concave, rear outer face of the ophthalmic lens (1) orientated towards the eye of the user, and a front face (10AR) orientated towards the field of vision of the user, characterized in that the lens further comprises an interferometric mirror (21) disposed between the first outer layer (9) and the second outer layer (10).
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: April 20, 2021
    Assignee: BNL EUROLENS
    Inventors: Didier Clerc, Franck Ledien
  • Patent number: 10948640
    Abstract: A sensor window may include a substrate and a set of layers disposed onto the substrate. The set of layers may include a first subset of layers of a first refractive index and a second set of layers of a second refractive index different from the first refractive index. The set of layers may be associated with a threshold transmissivity in a sensing spectral range. The set of layers may be configured to a particular color in a visible spectral range and may be associated with a threshold opacity in the visible spectral range.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: March 16, 2021
    Assignee: VIAVI Solutions Inc.
    Inventors: Georg J. Ockenfuss, Scott Rowlands, Markus Bilger
  • Patent number: 10838125
    Abstract: A wavelength tunable interference filter includes a fixed substrate, a fixed reflection film that is provided on the fixed substrate, reflects part of incident light, and transmits at least part of the incident light, a movable reflection film that faces the fixed reflection film, reflects part of incident light, and transmits at least part of the incident light, and a fixed electrode that surrounds the fixed reflection film and has a light absorbing layer and a metal layer, and the light absorbing layer is disposed closer to the fixed substrate than the metal layer.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: November 17, 2020
    Assignee: Seiko Epson Corporation
    Inventor: Akira Sano
  • Patent number: 10766225
    Abstract: Provided are a laminate including a substrate; and a laminated structure including two or more kinds of layers having different specific acoustic impedances which is disposed on the substrate, in which the number of the layers constituting the laminated structure is 10 or more, a thickness of a layer having the largest thickness among the layers constituting the laminated structure is 8 nm or less, and in the laminated structure, a CV value defined by a standard deviation of a layer thickness/average layer thickness is 0.05 or more, and a building material, a window material, and a radiation cooling device including the laminate.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: September 8, 2020
    Assignee: FUJIFILM CORPORATION
    Inventor: Tatsuya Yoshihiro
  • Patent number: 10746601
    Abstract: Embodiments provide an integrated miniature polarimeter and spectrograph (IMPS) and associated methods for using an IMPS to determine Stokes parameters to describe a source beam. In one embodiment an IMPs is provided comprising a spectropolarimeter module. The spectropolarimeter module comprises a miniature optical bench; a slit component; a birefringent wedge; a dichroic prism; a spectral disperser; and a focal plane array. The slit component, birefringent wedge, dichroic prism, spectral disperser, and focal plane array are mounted to the miniature optical bench such that a beam incident on the slit component will be incident on (1) the birefringent wedge, (2) the dichroic prism, (3) the spectral disperser, and (4) the focal plane array, in that order.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: August 18, 2020
    Assignee: University of Florida Research Foundation, Incorporated
    Inventors: Charles Michael Telesco, William B. Sparks, Bo Zhao
  • Patent number: 10654746
    Abstract: Provided is a glass sheet with an antireflection film: containing a glass sheet, a first transparent high refractive index layer located on the glass sheet, a first transparent low refractive index layer located on the first transparent high refractive index layer, a second transparent high refractive index layer located on the first transparent low refractive index layer, and a second transparent low refractive index layer located on the second transparent high refractive index layer; having a haze after heating at 600° C. to 700° C. for 15 minutes being 0.4% or less; and having a visible light reflectance measured from the side of the second transparent low refractive index layer based on JIS R 3106 being 1.0% or less.
    Type: Grant
    Filed: May 23, 2018
    Date of Patent: May 19, 2020
    Assignee: AGC Inc.
    Inventors: Hirotomo Kawahara, Kenichi Suzuki, Nobutaka Aomine
  • Patent number: 10649232
    Abstract: This invention relates to an ophthalmic lens with a low reflection both in the ultraviolet region and in the visible region, comprising a substrate provided on its rear main face with a multilayered antireflective coating (3-7 layers) comprising a stack of at least one layer with a high refractive index and at least one layer with a low refractive index, having a mean reflection factor on the rear face in the visible region Rm lower than or equal to 1.15%, a mean light reflection factor on the rear face in the visible region Rv lower than or equal to 1%, a mean reflection factor RUV on the rear face between 280 nm and 380 nm, weighted by the function W(?) defined in the ISO 13666:1998 standard, lower than 5%, for angles of incidence of 30° and 45°, the antireflective coating outer layer being a silica-based layer. The lens according to the invention does especially prevent the reflection of the UV radiation produced by light sources located behind the wearer.
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: May 12, 2020
    Assignee: ESSILOR INTERNATIONAL
    Inventors: Hervé Cado, Francisco De Ayguavives, Olivier Pophillat
  • Patent number: 10642167
    Abstract: In order to make possible both good laser resistance and good antireflection properties, an optical element, in particular for UV lithography, comprising a substrate and a coating on the substrate having at least four layers, is proposed, wherein a first layer comprising a low refractive index inorganic fluoride compound is arranged on the substrate, a layer comprising an inorganic oxide-containing compound is arranged as a layer the most distant from the substrate, and at least two further layers each comprising an inorganic fluoride compound or an inorganic oxide-containing compound are arranged alternately between the first and the most distant layers.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: May 5, 2020
    Assignee: Carl Zeiss SMT GmbH
    Inventors: Vitaliy Shklover, Michael Schall, Johannes Kraus, Oliver Gloeckl, Jeffrey Erxmeyer, Horst Feldermann, Konstantin Forcht, Ute Heinemeyer
  • Patent number: 10401992
    Abstract: The present invention relates to a substrate for a display device and, more particularly, to a substrate for a display device, which not only has excellent durability, but can also minimize the occurrence of color shift when applied to a display device. To this end, the present invention provides a substrate for a display device, which is characterized by including: a substrate; a hard coat film formed on the substrate and formed of AlON; and a multilayer film formed between the substrate and the hard coat film, and formed of a coating film having a first refractive index and a coating film having a second refractive index, which are repetitively stacked in sequence.
    Type: Grant
    Filed: September 3, 2015
    Date of Patent: September 3, 2019
    Assignee: Corning Precision Materials Co., Ltd.
    Inventors: Jin Soo An, Min Seok Kim
  • Patent number: 10319867
    Abstract: Provided is an electronic component including: a base member; an electronic device fixed on the base member; and a lid member arranged over the electronic device and fixed on the base member. A primary material of the lid member is a crystal quartz, the lid member has two primary faces opposing to the electronic device and four side faces, and each of the four side faces is a wet-etched face that is not parallel to an optical axis of the crystal quartz.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: June 11, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yu Katase, Tadashi Kosaka, Koichi Shimizu, Shuichi Chiba, Kazuya Notsu, Yoshifumi Murakami
  • Patent number: 10158047
    Abstract: Disclosed is a semiconductor light emitting device including: a plurality of semiconductor layers; a first non-conductive reflective film formed on the plurality of semiconductor layer to reflect light from the active layer, wherein the first non-conductive reflective film includes multiple layers and has a first incident angle as the Brewster angle; a second non-conductive reflective film formed on the first non-conductive reflective film to reflect light transmitted through the first non-conductive reflective film, wherein the second non-conductive reflective film includes multiple layers, with part of which being made of a different material from the first non-conductive reflective film, and has a second incident angle as the Brewster angle, different from the first incident angle; and an electrode electrically connected to one of the plurality of semiconductor layers.
    Type: Grant
    Filed: April 4, 2016
    Date of Patent: December 18, 2018
    Assignee: SEMICON LIGHT CO., LTD.
    Inventors: Soo Kun Jeon, Jun Chun Park, Il Gyun Choi, Sung Gi Lee, Dae Soo Soul, Tea Jin Kim, Yeon Ho Jeong, Geun Mo Jin, Sung Chan Lee
  • Patent number: 10145999
    Abstract: An optical element includes a transparent substrate having a planar front surface, and a multilayer structure, which is formed on the front surface of the substrate and includes multiple thin film layers, including an outer layer that is exposed to ambient air. The multilayer structure defines, at a target wavelength, a series of resonant cavities that create, for a beam of light at the target wavelength that is incident on the optical element at a target angle, a passband for an s-polarization component of the beam and a stopband for a p-polarization component of the beam.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: December 4, 2018
    Assignee: APPLE INC.
    Inventor: Ligang Wang
  • Patent number: 10147755
    Abstract: A solid-state imaging device includes an Si substrate in which a photoelectric conversion unit that photoelectrically converts visible light incident from a back surface side is formed, and a lower substrate provided under the Si substrate and configured to photoelectrically convert infrared light incident from the back surface side.
    Type: Grant
    Filed: October 16, 2017
    Date of Patent: December 4, 2018
    Assignee: Sony Corporation
    Inventors: Keiji Mabuchi, Hideshi Abe, Hideo Kanbe, Shiro Uchida
  • Patent number: 10079257
    Abstract: A method of forming an image sensor device includes forming a light sensing region at a front surface of a silicon substrate and a patterned metal layer there over. Thereafter, the method includes depositing a metal oxide anti-reflection laminate on the first surface of the substrate. The metal oxide anti-reflection laminate includes one or more composite layers of thin metal oxides stacked over the photodiode. Each composite layer includes two or more metal oxide layers: one metal oxide is a high energy band gap metal oxide and another metal oxide is a high refractive index metal oxide.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: September 18, 2018
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Hsing-Lien Lin, Yeur-Luen Tu, Cheng-Yuan Tsai, Cheng-Ta Wu, Chia-Shiung Tsai
  • Patent number: 10061133
    Abstract: In an optical element, a half mirror layer includes a silver layer, a first dielectric multilayer film that is provided between the silver layer and a first translucent member made of resin, and a second dielectric multilayer film that is provided on the opposite side to the first translucent member with respect to the silver layer. The first dielectric multilayer film includes a first aluminum oxide layer that is in contact with the silver layer, and a titanium oxide layer that is in contact with the first aluminum oxide layer on the first translucent member side. The second dielectric multilayer film includes a zirconium oxide layer (zirconium oxide-based dielectric layer) and a second aluminum oxide layer that is in contact with the zirconium oxide layer, and one of the second aluminum oxide layer and the zirconium oxide layer is in contact with the silver layer.
    Type: Grant
    Filed: May 15, 2014
    Date of Patent: August 28, 2018
    Assignee: Seiko Epson Corporation
    Inventor: Kunihiko Yano
  • Patent number: 9983423
    Abstract: An electronic device may include multiple display layers. The display layers may include a matching layer implemented using multiple graded index of refraction sublayers to help minimize reflections. The matching layer may include a first sublayer having a monotonically increasing index of refraction, a second (reverse matching) sublayer having a monotonically decreasing index of refraction, and a third sublayer having a monotonically increasing index of refraction. The second reverse matching sublayer may serve to induce an optical path difference that results in destructive inference at one or more specific wavelengths. The thickness of the reverse matching sublayer may be tuned to center the destructive interference at the desired wavelength(s). If desired, multiple matching layers each having their own reverse matching layers may be stacked on top of one another to provide reflectance suppression at multiple wavelengths.
    Type: Grant
    Filed: May 6, 2016
    Date of Patent: May 29, 2018
    Assignee: Apple Inc.
    Inventor: Wen-I Hsieh
  • Patent number: 9958693
    Abstract: Shaped glasses have curved surface lenses with spectrally complementary filters disposed thereon. The filters curved surface lenses are configured to compensate for wavelength shifts occurring due to viewing angles and other sources. Complementary images are projected for viewing through projection filters having passbands that pre-shift to compensate for subsequent wavelength shifts. At least one filter may have more than 3 primary passbands. For example, two filters include a first filter having passbands of low blue, high blue, low green, high green, and red, and a second filter having passbands of blue, green, and red. The additional passbands may be utilized to more closely match a color space and white point of a projector in which the filters are used. The shaped glasses and projection filters together may be utilized as a system for projecting and viewing 3D images.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: May 1, 2018
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Martin J. Richards, Wilson Allen, Gary D Gomes
  • Patent number: 9761740
    Abstract: The invention refers to an electromagnetic radiation sensor micro device for detecting electromagnetic radiation, which device comprises a substrate and a cover at least in part consisting of an electromagnetic radiation transparent material, and comprising a reflection reducing coating and providing a hermetic sealed cavity and an electromagnetic radiation detecting unit arranged within the cavity. The reflection reducing coating is arranged in form of a multi-layer thin film stack, which comprises a first layer and a second layer arranged one upon the other. The first layer has a first refractive index and the second layer has a second refractive index different from the one of said first layer. First and second layer are of such layer thickness that for a certain wavelength there is destructive interference. The invention also refers to a wafer element as well as method for manufacturing such a device.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: September 12, 2017
    Assignee: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
    Inventor: Wolfgang Reinert
  • Patent number: 9733183
    Abstract: Disclosed are improved integrated computational elements for use in optical computing devices. One integrated computational element includes an optical substrate, first and second pluralities of optical thin film layers alternatingly deposited on the optical substrate to form a thin film stack, wherein each optical thin film layer of the first plurality exhibits a first refractive index and each optical thin film layer of the second plurality exhibits a second refractive index different than the first refractive index, and at least one additional optical thin film layer arranged in or on the thin film stack and in optical communication with at least one of the optical thin film layers of the first and second pluralities, the at least one additional optical thin film layer exhibiting a third refractive index that is different than the first and second refractive indices.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: August 15, 2017
    Assignee: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: David L. Perkins, Robert Paul Freese, Christopher Michael Jones, Richard Neal Gardner
  • Patent number: 9715044
    Abstract: An antireflection film formed on a substrate having a refractive index between 1.40 and 1.85 inclusive for light having a wavelength of 550 nm includes an intermediate layer formed on the substrate, and a concavo-convex layer formed on the intermediate layer, the concavo-convex layer includes a part has a refractive index that continuously increases from a side closer to a surface toward a side closer to the substrate, the intermediate layer includes a plurality of thin film layers having different refractive indices, and at least one of the thin film layers has a refractive index higher than the refractive index of the substrate, and the thin film layers include a first layer formed on the substrate and having a physical thickness d1, and a second layer formed on the first layer and having a physical thickness d2, and satisfy predetermined conditional expressions.
    Type: Grant
    Filed: August 11, 2015
    Date of Patent: July 25, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Rie Ishimatsu
  • Patent number: 9695993
    Abstract: The present invention provides a lighting device including (i) one or more LED chips positioned on one or more LED chip bases; (ii) one or more lens bases each of which includes one or more lenses, said lens comprises coatings for changing color temperature of the light produced by said LED chips and transmitted through said lens; and (iii) a motion transmission system to change the position of said lens bases relative to said LED chip bases, wherein each of said lenses is placed along the light path of one or more LED chips, and said lens changes the light beam cone angle of light emitted from said LED chips to produce long distance high intensity illumination. In one embodiment, the lens bases can be moved in a direction parallel to the optical axes of said lens, or moved on a plane that is parallel to said LED chip bases.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: July 4, 2017
    Assignee: MAIN HARBOUR INTERNATIONAL LIMITED
    Inventors: Kaizhi Chen, Glenn Mankit Tse
  • Patent number: 9654676
    Abstract: An optical element in which transmittance of light monotonically decreases from a center portion toward a peripheral portion, includes a light absorbing portion, made of a material that absorbs a part of or all of visible light, formed at one surface of a transparent substrate such that its thickness monotonically increases from the center portion toward the peripheral portion; a light transmitting portion, made of a material that transmits visible light, formed on the light absorbing portion; and a transparent resin layer, made of a material that transmits visible light, formed at another surface of the transparent substrate, wherein each of the light absorbing portion, the light transmitting portion and the transparent resin layer is made of a resin material.
    Type: Grant
    Filed: June 11, 2015
    Date of Patent: May 16, 2017
    Assignee: Asahi Glass Company, Limited
    Inventors: Motoshi Nakayama, Takuji Nomura, Kensuke Ono
  • Patent number: 9651723
    Abstract: An optical filter member includes a transparent base; and an optical film disposed on a surface of the base. The optical film includes a first, a second and a third dielectric multilayer films, in the respective multilayer films a plurality of dielectric layers having different refractive indexes being laminated. The first dielectric multilayer film has a first light transmission range within a wavelength of visible light. The second dielectric multilayer film has a second light transmission range falling within the first light transmission range and has an average refractive index higher than that of the first dielectric multilayer film. The third dielectric multilayer film blocks light having twice a wavelength of a central wavelength of the second light transmission range. The second dielectric multilayer film is disposed, together with the first dielectric multilayer film or the third dielectric multilayer film, on a same main surface side of the base.
    Type: Grant
    Filed: October 24, 2013
    Date of Patent: May 16, 2017
    Assignee: KYOCERA CORPORATION
    Inventor: Takahiro Nakao
  • Patent number: 9561682
    Abstract: A color shifting security device has a Fabry-Perot type structure wherein a dielectric layer is disposed between a reflector and an absorbing layer. The absorber and reflector layers may be conforming and the dielectric layer therebetween is non-conforming, filling the regions in the micro structured adjacent absorbing or reflecting layer, at least one of which has a microstructure therein or thereon. By having the dielectric layer not conform to the microstructure it is next to, its thickness varies in cross section, which allows for different colors to be seen where the thickness varies.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: February 7, 2017
    Assignee: Viavi Solutions Inc.
    Inventors: Paul T. Kohlmann, Alberto Argoitia, Cornelis Jan Delst
  • Patent number: 9523804
    Abstract: An interface between two different optical materials can comprise a stack of thin film layers that manage light incident on that interface. One of the optical materials can have a first composition and a first refractive index, while the other optical material can have a second composition and a second refractive index. The stack can comprise thin film layers of the first optical material interleaved between thin film layers of the second optical material. The layers of the stack can be configured to provide the stack with an aggregate composition of at least one of the optical materials that progressively varies from one end of the stack to the other end. To provide the progressive variation in composition, the layers of one of the optical materials can have a progressively increased thickness across the stack, or can progressively increase in number, for example.
    Type: Grant
    Filed: July 18, 2014
    Date of Patent: December 20, 2016
    Assignee: CIRREX SYSTEMS, LLC
    Inventor: Michael L Wach
  • Patent number: 9405044
    Abstract: An antireflection coating film formed on an optical base member includes: a first layer having a refractive index of N1 and a film thickness of D1; a second layer having a refractive index of N2 and a film thickness of D2; and a third layer formed of a fine concavo-convex structure, having a refractive index changing from N3 to 1.0, and a film thickness of D3, wherein the first, second, and third layer are formed in order from the optical base member side having a refractive index of Nsub, and wherein when the refractive indexes Nsub, N1, N2, and N3 are those taken when a wavelength is 550 nm, conditions for Nsub, N1, D1, N2, D2, N3 and D3 are satisfied.
    Type: Grant
    Filed: June 10, 2013
    Date of Patent: August 2, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takeharu Okuno
  • Patent number: 9354370
    Abstract: The present disclosure relates to thin film notch filters having the basic structure of an interference filter. In some embodiments, the filters according to the present disclosure exhibit at least one notch correlating to a pass band defect. The filters of the present disclosure may exhibit at least one of improved pass band bandwidth, improved edge steepness, narrower notch band FWHM, and lower sensitivity to material mismatch, relative to prior known thin film notch filters based on the basic structure of an interference filter. The present disclosure also relates to methods of making the filters described herein, and the use of these filters in optimal measurement systems.
    Type: Grant
    Filed: September 25, 2008
    Date of Patent: May 31, 2016
    Assignee: SEMROCK, INC.
    Inventors: Turan Erdogan, Ligang Wang
  • Patent number: 9268068
    Abstract: A display panel assembly and an electronic device including the assembly are disclosed. In one aspect, the assembly includes a window cover including a display area and a non-display area and a display panel disposed on a location of a rear surface of the window cover corresponding to the display area. The assembly further includes a dielectric mirror layer disposed on a location of the rear surface of the window cover corresponding to the non-display area which selectively reflects light incident through the window cover to provide a metallic color sense to a user and a light absorbing layer absorbing light transmitted through the dielectric mirror layer.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: February 23, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Hyun-Hee Lee
  • Patent number: 9223081
    Abstract: Disclosed are an optical member and a display device including the same. The optical member includes a wavelength conversion layer to convert a wavelength of an incident light; a first anti-reflective layer on a first surface of the wavelength conversion layer; and a second anti-reflective layer under a second surface of the wavelength conversion layer opposite to the first surface.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: December 29, 2015
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Jeong Taek Oh, Sun Hwa Lee
  • Patent number: 9036003
    Abstract: This invention discloses a multi-pitching angle suspended space 3D display device with 360° FOV, comprising: a transmitted composite deflective diffusing screen, a high speed projector, an image generator, a detecting module and a rotating drive mechanism. The high speed projector projects the composite images of the 3D objects of different pitching angles and horizontal 360° views to the composite deflective diffusing screen that rotates at a high speed. The composite deflective diffusing screen is able to control the vertical deflecting and scattering angles and horizontal diffusing angle for incident rays with different angles, allowing the surrounding viewers at different height levels to see the images corresponding to their viewpoints, making the displayed 3D objects suspended over the composite deflecting scattering screen, of which the position does not change as the height of the viewpoint changes.
    Type: Grant
    Filed: September 5, 2011
    Date of Patent: May 19, 2015
    Assignee: ZHEJIANG UNIVERSITY
    Inventors: Xu Liu, Xinxing Xia, Yifan Peng, Haifeng Li, Zhenrong Zheng
  • Patent number: 9025248
    Abstract: An antireflection stack, whereby a reflected color is moderate, and a multicolorization is suppressed. The antireflection stack comprises a substrate and an antireflection layer stacked on the substrate. The antireflection layer has a four-layer structure and comprises, sequentially from the substrate side, a first layer, a second layer, a third layer and a fourth layer. Further, the first layer has a refractive index of from 1.7 to 1.79, the second layer has a refractive index of from 2.25 to 2.45, the third layer has a refractive index of from 2.1 to 2.3, the fourth layer has a refractive index of from 1.25 to 1.5, and the refractive index of the second layer is larger than that of the third layer.
    Type: Grant
    Filed: October 28, 2013
    Date of Patent: May 5, 2015
    Assignee: Asahi Glass Company, Limited
    Inventors: Kensuke Fujii, Kouji Satou, Kouta Hori, Tamotsu Morimoto
  • Patent number: 9013795
    Abstract: This disclosure is directed to an improved process for making glass articles having optical coating and easy-to clean coating thereon, an apparatus for the process and a product made using the process. In particular, the disclosure is directed to a process in which the application of the optical coating and the easy-to-clean coating can be sequentially applied using a single apparatus. Using the combination of the coating apparatus and the substrate carrier described herein results in a glass article having both optical and easy-to-clean coating that have improved scratch resistance durability and optical performance, and in addition the resulting articles are “shadow free.
    Type: Grant
    Filed: July 29, 2014
    Date of Patent: April 21, 2015
    Assignee: Corning Incorporated
    Inventors: Christopher Morton Lee, Xiao-feng Lu, Michael Xu Ouyang, Junhong Zhang
  • Patent number: 8982466
    Abstract: The present invention relates to an optical lens having a lens element produced of plastic, more particularly of plastic which is transparent in a visible spectral range, and having a coating comprising a plurality of layers, the plurality of layers comprising at least one high-refractive-index layer. Furthermore, a hardcoat layer is formed adjacent to the lens element, and a superhydrophobic layer concludes the coating in opposition to the lens element. The at least one high-refractive-index layer has a thickness of less than 40 nm, and the coating overall has a thickness of more than about 380 nm.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: March 17, 2015
    Assignee: Carl Zeiss Vision International GmbH
    Inventor: Andreas Neuffer
  • Patent number: 8958156
    Abstract: The present disclosure relates to thin film optical interference filters. The filters include a substrate and a plurality of alternating material layers deposited on the substrate. When operated at about 45° angle of incidence, the filters exhibit at least one of improved polarization splitting, edge steepness, bandpass bandwidth, and blocking, relative to conventional thin film interference filters.
    Type: Grant
    Filed: May 29, 2008
    Date of Patent: February 17, 2015
    Assignee: Semrock, Inc.
    Inventors: Turan Erdogan, Ligang Wang
  • Patent number: 8934172
    Abstract: According to one embodiment, a mirror includes a plurality of dielectric layers stacked in a first direction. A thickness along the first direction of each of the dielectric layers is half a design wavelength. The dielectric layers include a first dielectric layer. The first dielectric layer includes a first portion with a thickness being ? of the design wavelength, a second portion stacked with the first portion with a thickness being ? of the design wavelength, and a third portion provided between the first and second portions with a thickness being ¼ of the design wavelength. The second portion has a refractive index lower than that of the first portion. The third portion has a refractive index gradually decreasing from a side of the first portion toward a side of the second portion.
    Type: Grant
    Filed: July 5, 2012
    Date of Patent: January 13, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hayato Goto, Kouichi Ichimura
  • Patent number: 8928980
    Abstract: A micromirror arrangement (1) having: at least one micromirror (3) having a reflective surface (11) formed at a mirror substrate (2), and an antireflective coating (7) formed at the mirror substrate (2) outside the reflective surface (11). A reflective coating (8) is formed within the reflective surface (11) and has at least two layer subsystems, wherein the first layer subsystem has layers (8e, 8f) composed of a periodic sequence of alternate high and low refractive index layers composed of a nonmetallic material and is optimized with regard to the reflectivity in respect of a used wavelength of the micromirror arrangement, and wherein the second layer subsystem is optimized with regard to the reflectivity in respect of a measurement wavelength of the micromirror arrangement, said measurement wavelength deviating from the used wavelength.
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: January 6, 2015
    Assignee: Carl Zeiss SMT GmbH
    Inventors: Karl-Stefan Weissenrieder, Roland Loercher, Alexandra Pazidis
  • Patent number: 8908275
    Abstract: An optical product includes an optical multilayer film on an optical product base. A color of reflected light of the optical multilayer film satisfies both of the following conditions in a chromaticity diagram (x,y,Y) of a CIE color system: [1] 0.27?x?0.30 and [2] 0.30?y?0.36. The optical product base is a spectacle plastic lens base.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: December 9, 2014
    Assignee: Tokai Optical Co., Ltd.
    Inventors: Tsuyoshi Fukagawa, Hirotoshi Takahashi, Koji Yamamoto
  • Patent number: 8882280
    Abstract: An optical substrate such as a cover glass which effects only a small change in a reflected color dependent on an incident angle, or more particularly, an optical substrate such as a cover glass for displays includes a reinforcement layer intended to prevent cracking, an antiglare layer formed on the reinforcement layer, a tone-adjustment antireflection film formed on the antiglare layer, and an antifouling layer formed on the antireflection film intended to minimize fingerprint adhesion. The antireflection film includes at least nine layers.
    Type: Grant
    Filed: October 9, 2012
    Date of Patent: November 11, 2014
    Assignee: Kabushiki Kaisha Topcon
    Inventors: Hiroki Fukaya, Youichi Shimamura, Takuro Okubo, Saki Odaka, Takaaki Saito, Tatsuya Kojima