Filter Having Four Or More Layers Patents (Class 359/588)
  • 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
  • Patent number: 8879150
    Abstract: Optical components and their methods of manufacture are provided, including a first stack of layers configured to exhibit a first stop band for s-polarized radiation and a second stop band for p-polarized radiation incident on the first stack of layers at an oblique angle, a second stack of layers configured to exhibit a third stop band for s-polarized radiation and a fourth stop band for p-polarized radiation incident on the second stack of layers at the oblique angle, where the cut-on wavelength for the first stop band is approximately equal to or larger than the cut-off wavelength for the third stop band. Optical components are further provided to include extended blocking functionality, and to permit stress balancing in thin-film coatings on opposite sides of a substrate.
    Type: Grant
    Filed: March 19, 2010
    Date of Patent: November 4, 2014
    Assignee: SEMROCK, Inc.
    Inventors: Ligang Wang, Craig Hodgson, Turan Erdogan
  • Patent number: 8861088
    Abstract: An optical filter 13 is provided with a quartz plate 2 and a filter group 3. The filter group 3 is constituted by combining a first filter 33 having transmission characteristics in the visible region and one preset band of the infrared region that is contiguous with the visible region, and a second filter 35 and a third filter 36 each having transmission characteristics in the visible region and another preset band of the infrared region that is removed from the visible region and having blocking characteristics in a band between the visible region and the other band of the infrared region. In the second filter 35 and the third filter 36, each of the bands in which blocking characteristics are obtained is approximately 150 nm or less, and the bands in which blocking characteristics are obtained overlap.
    Type: Grant
    Filed: September 9, 2010
    Date of Patent: October 14, 2014
    Assignee: Daishinku Corporation
    Inventor: Manabu Ohnishi
  • Patent number: 8842364
    Abstract: An optical device that has an antireflection function, the optical device including: a base; and a plurality of structural bodies, which are formed by convex portions or concave portions, arranged on a surface of the base with a fine pitch that is equal to or smaller than a wavelength of visible light, wherein the plurality of structural bodies are arranged so as to form tracks of a plurality of rows on the surface of the base and form a quasi-hexagonal lattice pattern, a tetragonal lattice pattern, or a quasi-tetragonal lattice pattern, and wherein a packing ratio of the structural bodies to the surface of the base is equal to or higher than 65%.
    Type: Grant
    Filed: October 1, 2013
    Date of Patent: September 23, 2014
    Assignee: Dexerials Corporation
    Inventors: Sohmei Endoh, Kazuya Hayashibe
  • Patent number: 8817376
    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: September 10, 2013
    Date of Patent: August 26, 2014
    Assignee: Corning Incorporated
    Inventors: Christopher Morton Lee, Xiao-feng Lu, Michael Xu Ouyang, Junhong Zhang
  • Publication number: 20140210031
    Abstract: A variable optical filter is disclosed including a bandpass filter and a blocking filter. The bandpass filter includes a stack of alternating first and second layers, and the blocking filter includes a stack of alternating third and fourth layers. The first, second and fourth materials each comprise different materials, so that a refractive index of the first material is smaller than a refractive index of the second material, which is smaller than a refractive index of the fourth material; while an absorption coefficient of the second material is smaller than an absorption coefficient of the fourth material. The materials can be selected to ensure high index contrast in the blocking filter and low optical losses in the bandpass filter. The first to fourth layers can be deposited directly on a photodetector array.
    Type: Application
    Filed: January 28, 2014
    Publication date: July 31, 2014
    Inventors: Karen Denise HENDRIX, Charles A. HULSE, Richard A. BRADLEY, Jeffrey James KUNA
  • Patent number: 8786950
    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: April 29, 2013
    Date of Patent: July 22, 2014
    Assignee: Cirrex Systems, LLC
    Inventor: Michael L. Wach
  • Patent number: 8736959
    Abstract: An omnidirectional reflector that reflects a band of electromagnetic radiation of less than 100 nanometers when viewed from angles between 0 and 45 degrees is provided. The omnidirectional reflector includes a multilayer stack having a plurality of layers of high index of refraction material and a plurality of layers of low index of refraction material. In addition, the plurality of high index of refraction material layers and low index of refraction material layers are alternately stacked on top of or across each other and provide a non-periodic layered structure.
    Type: Grant
    Filed: June 4, 2010
    Date of Patent: May 27, 2014
    Assignees: Toyota Motor Engineering & Manufacturing North America, Inc., Toyota Motor Corporation
    Inventors: Benjamin Alan Grayson, Debasish Banerjee, Minjuan Zhang, Masahiko Ishii
  • Publication number: 20140139912
    Abstract: An optical member has: a transparent substrate; and a dielectric multilayer on the transparent substrate formed by stacking a plurality of unit refractive index layers each formed of a high-refractive index layer having a refractive index of 2 or more and a low-refractive index layer having a refractive index of 1.6 or less. In the optical member, a total number of the unit refractive index layers is 15 or more, and a number of the unit refractive index layers satisfying a condition of nHdH/nLdL?3 is 10 or more, nHdH represents an optical thickness of the high-refractive index layer, and nLdL represents an optical thickness of the low-refractive index layer.
    Type: Application
    Filed: January 28, 2014
    Publication date: May 22, 2014
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Mitsuo OSAWA, Masahiro MORI, Katsushi MIYAKE, Katsushi KAMIJYO, Mitsuyuki TATEMURA
  • Patent number: 8724221
    Abstract: An optical filter includes a substrate and a filter film attached on the substrate. The filter film has alternate layers of high reflective layers and low reflective layers to form a plurality of Fabry-Perot resonators. A basic optical thickness of the high reflective layers and the low reflective layers is one fourth a central wavelength (?0/4) of incident ray, and each of the Fabry-Perot resonators has two high reflector films and a spacer between the high reflector films. The spacers in the Fabry-Perot resonator, which is most proximal to the substrate, and in the Fabry-Perot resonator, which is most distal to the substrate, have an optical thickness respectively in a range between four times the basic optical thickness and fourteen times the basic optical thickness.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: May 13, 2014
    Assignee: Asia Optical Co., Inc.
    Inventor: Yi-Sheng Chang
  • Patent number: 8675280
    Abstract: The invention relates to an optical filter structure composed of at least two adjacent elementary optical filters, an elementary optical filter being centred on an optimum transmission frequency, characterised in that it comprises a stack of n metallic layers (m1-m3) and n?1 dielectric layers (d2-d3), each metallic layer alternating with a dielectric layer such that the central layer in the stack is a metallic layer (m2), each of the layers in the stack having a constant thickness except for the central metallic layer for which the varying thickness fixes the optimum transmission frequency of an elementary filter.
    Type: Grant
    Filed: October 20, 2009
    Date of Patent: March 18, 2014
    Assignee: Commissariat a l'Energie Atomique et aux Energies Alternatives
    Inventor: Gilles Grand
  • Patent number: 8619365
    Abstract: Multilayer anti-reflective coatings having four or more layers are disclosed. In one aspect, the multilayer anti-reflective coating comprises a first layer having a refractive index n1, where n1<1.4, and an optical thickness of (0.25±5%) ?o nm; a second layer adjacent to the first layer, the second layer having a refractive index n2, where n2?1.8, and an optical thickness of (0.5±5%) ?o nm; a third layer adjacent to the second layer, the third layer having a refractive index n3, where 1.4?n3<1.6, and an optical thickness of (0.1±5%) ?o nm; and a fourth layer adjacent to the third layer, the fourth layer having a refractive index n4, where n4?1.8, and an optical thickness of (0.05±10%) ?o nm; where ?o is a wavelength in the visible light range.
    Type: Grant
    Filed: October 8, 2009
    Date of Patent: December 31, 2013
    Assignee: Corning Incorporated
    Inventors: Michael David Harris, Christopher Morton Lee, Lawrence George Mann, Mike Xu Ouyang
  • Patent number: 8570647
    Abstract: An optical element includes a substrate and a film on the substrate. The substrate made of sapphire. The film is configured for increasing transmission of ultraviolet lights. The film is stacked by a plurality of high refractive index layers and a plurality of low refractive index layers alternately stacked on the substrate.
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: October 29, 2013
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Chao-Tsang Wei
  • Patent number: 8481148
    Abstract: An antireflection film is formed by alternately laminating a low refractive index layer and a high refractive index layer. The antireflection film has a reflectance of 10% or less and an excitation purity range of 10 or less for visible light in a wavelength range from 380 nm to 780 nm incident at an incident angle ranging from 0° to 45° when regarding the direction perpendicular to the surface as 0°. The antireflection film inhibits a specific color tone from occurring in interference color of incident light coming from an oblique direction.
    Type: Grant
    Filed: April 27, 2009
    Date of Patent: July 9, 2013
    Assignee: Hoya Corporation
    Inventors: Makoto Adachi, Tsuneo Muraki, Kazuo Kawamata
  • Patent number: 8456741
    Abstract: A light dispersion filter is composed of three or more optically transparent layers each having a value equal to the value of the product of the refractive index and thickness of the optically transparent layer and transmitted light, and a plurality of partially reflective layers arranged alternately with the optically transparent layers and having predetermined reflectivities. Alternatively, a light dispersion filter has a plurality of etalon resonators which are arranged in series such that the value of the product of the refractive index of air and the interval of the etalon resonators is equal to the value of the product of the refractive index and thickness of the optically transparent layers.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: June 4, 2013
    Assignee: NEC Corporation
    Inventor: Kenji Sato
  • Patent number: 8432611
    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: February 12, 2012
    Date of Patent: April 30, 2013
    Assignee: Cirrex Systems, LLC
    Inventor: Michael L. Wach
  • Patent number: 8398871
    Abstract: A method for designing a first optical filter, exhibiting a first filter performance satisfying a first preset criterion, and a second optical filter, exhibiting a second filter performance satisfying a second preset criterion, includes providing initial first and second filter designs for the first and second optical filters, respectively, as first and second ordered stacks of layers, respectively. A pair of layers, including a first layer, characterized by a first thickness, and a second layer, characterized by a second thickness, is selected from the first and second ordered stacks of layers. The first thickness is constrained to a first constrained thickness that is a positive integer multiple of the second thickness to yield a constrained first filter design. A predicted performance of the constrained first filter design is determined and compared with the first preset criterion for one of accepting and rejecting the constrained first filter design.
    Type: Grant
    Filed: April 25, 2008
    Date of Patent: March 19, 2013
    Assignee: OmniVision Technologies, Inc.
    Inventors: Lu Gao, Gary Duerksen, Paulo E. X. Silveira
  • Publication number: 20130058096
    Abstract: Optical interference multilayer coatings of alternating first layers and second layers are provided. The first layers comprise alumina and have a refractive index that is about 1.38 to about 1.55 at 550 nm, while the second layers having a higher refractive index than the first layers. The first layers may be formed via chemical vapor deposition from an alumina precursor. Lamps comprising a light source and a light-transmissive envelope having a surface and at least partially enclosing the light source are also provided. At least a portion of the surface of the light-transmissive envelope is provided with an optical interference multilayer coating. Methods of forming an optical interference multilayer coating are also provided via chemical vapor deposition from an alumina precursor.
    Type: Application
    Filed: September 1, 2011
    Publication date: March 7, 2013
    Inventors: Peter W. BROWN, Wayne Allen BROWN, Jiawei LI, Tianji ZHAO