Polarization By Scattering Patents (Class 359/493.01)
  • Patent number: 11782204
    Abstract: A method of forming a one-way see-through illumination device including a light guide and a pattern of pixels on a surface of the light guide. The method includes forming pixel wells corresponding to the pixels, via a formation method including photolithography, on the surface of the light guide. The pixels, including a light diffusing layer and a light reflecting layer, are formed using the pixel wells, wherein the pattern of pixels and the light guide are arranged to generate transparent illumination by the frustration of total internal reflection of light injected into the light guide.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: October 10, 2023
    Assignee: NanoPath, Inc.
    Inventor: Kevin Donahue
  • Patent number: 11747626
    Abstract: One embodiment of the present application sets forth an apparatus that includes a composite display layer that transmits a set of composite light. The composite display layer includes a display layer that provides a first subset of light included in the set of composite light, and a first mirror layer parallel to the first display layer that provides a second subset of light included in the set of composite light, where the second subset of light comprises a reflection of a first portion of the first subset of light. The composite display layer also includes a polarizer layer disposed on the composite display layer, where the polarizer layer provides the first portion of the first subset of light to the first mirror layer.
    Type: Grant
    Filed: November 1, 2021
    Date of Patent: September 5, 2023
    Assignee: META PLATFORMS TECHNOLOGIES, LLC
    Inventor: Wei Rong
  • Patent number: 11598987
    Abstract: The present disclosure provides a display device including a liquid crystal layer having a first surface and a second surface opposite to each other, and the second surface has a light entrance region and a light outgoing region; a reflector within the liquid crystal layer and adjacent the first surface; a light absorbing layer on the first surface of the liquid crystal layer, the light absorbing layer including a first shielding layer, a second shielding layer and a filling layer therebetween, the second shielding layer is between the first shielding layer and the liquid crystal layer and has a first opening therein, and the liquid crystal layer is configured to modulate light incident from the light entrance region into first refracted light under a first voltage; and modulate the light incident from the light entrance region into second refracted light under a second voltage different from the first voltage.
    Type: Grant
    Filed: February 24, 2021
    Date of Patent: March 7, 2023
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Qingxun Zhang, Qian Wang, Wenqing Zhao, Zhongxiao Li, Song Yang
  • Patent number: 11467443
    Abstract: The present application discloses a polarizer and a preparation method thereof and a display device. Embodiments of the present disclosure provides a polarizer, wherein the polarizer includes: a polarizing layer, and a depolarizing layer located on a light emitting side of the polarizing layer; the depolarizing layer includes: nanoparticles, and a reflective part covering the nanoparticles; and the reflective part covering the nanoparticles generates resonance scattering with incident light.
    Type: Grant
    Filed: April 14, 2021
    Date of Patent: October 11, 2022
    Assignees: Beijing BOE Display Technology Co., Ltd., Beijing BOE Technology Development Co., Ltd.
    Inventors: Yu Zhang, Guangyun Tong, Zhuolong Li, Mingzhe Ye, Bochang Wang
  • Patent number: 11448803
    Abstract: Various embodiments set forth a foveated display system and components thereof. The foveated display system includes a peripheral display module disposed in series with a foveal display module. The peripheral display module is configured to generate low-resolution, large field of view imagery for a user's peripheral vision. The foveal display module is configured to perform foveated rendering in which high-resolution imagery is focused towards a foveal region of the user's eye gaze. The peripheral display module may include a diffuser that is disposed within a pancake lens, which is a relatively compact design. The foveal display module may include a Pancharatnam-Berry Phase grating stack that increases the steering range of a beam-steering device such that a virtual image can be steered to cover an entire field of view visible to the user's eye.
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: September 20, 2022
    Assignee: FACEBOOK TECHNOLOGIES, LLC
    Inventors: Lu Lu, Gang Li, Seungjae Lee, Mengfi Wang
  • Patent number: 11450970
    Abstract: Cascaded metasurfaces can control the phase, amplitude and polarization of an electromagnetic beam, shaping it in three dimensional configuration not achievable with other methods. Each cascaded metasurface has dielectric or metallic scatterers arranged in a period array. The shape of the scatterers determines the three dimensional configuration of the output beam and is determined with iterative calculations through computational simulations.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: September 20, 2022
    Assignee: CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Seyedeh Mahsa Kamali, Ehsan Arbabi, Andrei Faraon
  • Patent number: 10852581
    Abstract: A light unit according to an exemplary embodiment includes a light source and an optical member transmitting and converting light emitted from the light source, where the optical member includes a light guide, a low refractive index layer disposed on the light guide and having a smaller refractive index than that of the light guide, and a wavelength conversion layer disposed on the low refractive index layer and including quantum dots, and the low refractive index layer includes a metal.
    Type: Grant
    Filed: August 12, 2019
    Date of Patent: December 1, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dong Hee Lee, Baek Hee Lee, Sun-Young Hong
  • Patent number: 10782464
    Abstract: In a general aspect, optical beams are manipulated. In some cases, an optical device includes an inlet to receive a first beam, and one or more prism pairs. Each prism pair includes one or more birefringent gradients configured to transform the first beam into a second beam. The second beam is associated with a lattice of cells, where each cell includes a first portion and a second portion. The first portion is associated with a first orbital angular momentum (OAM) mode and a first polarization, and the second portion is associated with a second OAM mode and a second polarization.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: September 22, 2020
    Assignee: Quantum Valley Investment Fund LP
    Inventors: Dusan Sarenac, David G. Cory, Dmitry A. Pushin, Joachim Nsofini, Ian Hincks
  • Patent number: 9939129
    Abstract: Metalenses and technologies incorporating the same are disclosed. In some embodiments, the metalenses are in the form of a hybrid multiregion collimating metalens that includes a first region and a second region, wherein the hybrid multiregion collimating metalens is configured to collimate (e.g., visible) light incident thereon. In some instances the first region includes an array of first unit cells that contain subwavelength spaced nanostructures, such that the first region functions as a subwavelength high contrast grating (SWHCG), whereas the second region includes an array of second unit cell, wherein the array of second unit cells includes a near periodic annular arrangement of nanostructures such that the second region approximates the functionality of a locally periodic radial diffraction grating. Lighting devices including such metalenses are also disclosed.
    Type: Grant
    Filed: September 20, 2016
    Date of Patent: April 10, 2018
    Assignees: OSRAM SYLVANIA Inc., The President and Fellows of Harvard College
    Inventors: Steve Byrnes, Francesco Aieta, Federico Capasso, Alan Lenef
  • Patent number: 9880328
    Abstract: A light-transmitting structure comprising a substrate having a plurality of regions where at least two of the plurality of regions have different refractive indices, an optical path length of light transmitted from a first light source through the plurality of regions is substantially constant, and where light transmitted from a second light source into the substrate is scattered by at least one of the plurality of regions.
    Type: Grant
    Filed: December 8, 2014
    Date of Patent: January 30, 2018
    Assignee: CORNING INCORPORATED
    Inventors: Jacques Gollier, Shandon Dee Hart, Karl William Koch, III, James Andrew West, Ellen Marie Kosik Williams
  • Publication number: 20130344290
    Abstract: Articles comprising a substrate and a first layer on a major surface thereof, wherein the first layer has a first random, nanostructured surface, and wherein the first layer has an average thickness up to 0.5 micrometer. Embodiments of the articles are useful, for example, for display applications (e.g., liquid crystal displays (LCD), light emitting diode (LED) displays, or plasma displays); light extraction; electromagnetic interference (EMI) shielding, ophthalmic lenses; face shielding lenses or films; window films; antireflection for construction applications; and, construction applications or traffic signs.
    Type: Application
    Filed: March 5, 2012
    Publication date: December 26, 2013
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Ta-Hua Yu, Moses M. David, Kalc C. Vang
  • Publication number: 20130301130
    Abstract: There is provided a light diffusing element of a thin film, which has high light diffusibility and a small depolarization factor. A light diffusing element according to an embodiment of the present invention includes: a first region having a first refractive index; a refractive index modulation region having a substantially spherical shell shape, which surrounds the first region; and a second region having a second refractive index, which is positioned on a side of the refractive index modulation region opposite to the first region. The light diffusing element has a haze of 90% to 99.9% and a depolarization factor of 0.2% or less.
    Type: Application
    Filed: September 16, 2011
    Publication date: November 14, 2013
    Applicant: NITTO DENKO CORPORATION
    Inventors: Kozo Nakamura, Akinori Nishimura, Hiroyuki Takemoto
  • Publication number: 20130300980
    Abstract: There is provided a light diffusing element made of a thin film capable of realizing low backscattering and a high haze. A light diffusing element according to an embodiment of the present invention includes: a first region having a first refractive index; and a second region having a second refractive index. The first region and the second region form a fine uneven-shaped and spherical shell-shaped boundary.
    Type: Application
    Filed: September 16, 2011
    Publication date: November 14, 2013
    Applicant: NITTO DENKO CORPORATION
    Inventors: Akinori Nishimura, Kozo Nakamura, Hiroyuki Takemoto, Takehito Fuchida
  • Publication number: 20130265506
    Abstract: There is provided a light diffusing element made of a thin film capable of realizing low back scattering and a high haze. A light diffusing element according to an embodiment of the invention includes: a first region having a first refractive index n1; a refractive index modulation region having a substantially spherical shell shape and surrounding the first region; and a second region having a second refractive index n2, the second region being positioned on a side of the refractive index modulation region opposite to the first region.
    Type: Application
    Filed: September 16, 2011
    Publication date: October 10, 2013
    Applicant: NITTO DENKO CORPORATION
    Inventors: Akinori Nishimura, Kozo Nakamura, Hiroyuki Takemoto, Takehito Fuchida, Kazuto Yamagata, Shunsuke Shutou, Tomohito Takita
  • Publication number: 20130242241
    Abstract: There is provided an extremely thin light diffusing film, which has strong light diffusibility, has suppressed backscattering, and is excellent in productivity. The light diffusing film includes: a first region having a first refractive index; a substantially spherical shell-shaped refractive index modulation region surrounding the first region; and a second region having a second refractive index, the region being positioned on a side of the refractive index modulation region opposite to the first region. The light diffusing film has a light diffusion half-value angle of 30° or more and a thickness of 4 ?m to 25 ?m, and satisfies the following expressions (1) and (2): y?0.011x (30?x?60)??(1) y?0.0275x?0.99 (60<x)??(2) where x represents the light diffusion half-value angle (°) and y represents a backscattering ratio (%), the expressions (1) and (2) each representing a relationship between a numerical value for the light diffusion half-value angle and a numerical value for the backscattering ratio.
    Type: Application
    Filed: September 16, 2011
    Publication date: September 19, 2013
    Applicant: NITTO DENKO CORPORATION
    Inventors: Akinori Nishimura, Kozo Nakamura, Hiroyuki Takemoto, Takehito Fuchida
  • Publication number: 20130222911
    Abstract: An optical article includes an optical element and a low refractive index layer disposed on the optical element. The low refractive index layer having an effective refractive index of 1.3 or less and including a binder, a plurality of metal oxide particles dispersed in the binder and a plurality of interconnected voids. The low refractive index layer has a haze value of at least 30%.
    Type: Application
    Filed: October 14, 2011
    Publication date: August 29, 2013
    Inventors: William D. Coggio, Michael L. Steiner, William F. Edmonds, Robert F. Kamrath, Lan H. Liu, Encai Hao
  • Patent number: 8437082
    Abstract: A leaky travelling wave array of optical elements provide a solar wavelength rectenna.
    Type: Grant
    Filed: January 24, 2012
    Date of Patent: May 7, 2013
    Assignee: AMI Resaerch & Development, LLC
    Inventors: John T. Apostolos, Judy Feng, William Mouyos
  • Patent number: 8325418
    Abstract: An anti-glare film is provided and includes micro concave/convex portions on a surface. An average interval between the micro concave and convex portions is equal to 300 ?m or less. A differentiation with respect to angle d{Log(I(?))}/d? of a logarithm intensity of reflection Log(I(?)) in a direction of a deviation angle ? from a direction of specular reflection has an extreme value. A differentiation d{Log(P(?)}/d? of a histogram P(?) to an inclination angle ? of the micro concave/convex portions has an extreme value. In the anti-glare film 1, a value C(2.0) of transmitted image clarity measured by using an optical comb of a comb width of 2 mm in accordance with JIS-K7105 is equal to 30% or more, and a ratio C(0.125)/C(2.0) of the value C(2.0) measured by using the optical comb of the comb width of 2 mm and a value C(0.125) measured by using an optical comb having a comb width of 0.125 mm is equal to 0.1 or more.
    Type: Grant
    Filed: June 20, 2008
    Date of Patent: December 4, 2012
    Assignee: Sony Corporation
    Inventors: Tsutomu Nagahama, Yumi Haga, Hitoshi Watanabe, Shinichi Matsumura
  • Patent number: 8303127
    Abstract: A display apparatus and a method for manufacturing an optical compound layer are provided. The display apparatus comprises a light source and an optical compound layer, wherein the light source is adapted to emit a light beam, and the light beam has a polarization direction. The optical compound layer is disposed on the light source correspondingly to receive the light beam. The optical compound layer comprises a thin film and a plurality of dopants doped therein. One of the thin film and the dopants has a specific orientation which is substantially the same as the polarization direction of the light beam and the refractive indexes of the thin film and the dopants are substantially the same as well.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: November 6, 2012
    Assignee: AU Optronics Corp.
    Inventors: Chao-Yuan Chen, Jenn-Jia Su, Ting-Jui Chang
  • Patent number: 8259392
    Abstract: A microlithography projection exposure system has an illumination system with an illumination optical system. The latter can have at least one diffractive optical element, which is divided into multiple adjacently arranged individual elements, each of which has one specified bundle-forming and polarizing effect.
    Type: Grant
    Filed: February 13, 2008
    Date of Patent: September 4, 2012
    Assignee: Carl Zeiss SMT GmbH
    Inventors: Harald Volkenandt, Gundula Weiss
  • Publication number: 20120206807
    Abstract: A leaky travelling wave array of optical elements provide a solar wavelength rectenna.
    Type: Application
    Filed: January 24, 2012
    Publication date: August 16, 2012
    Inventors: JOHN T. APOSTOLOS, JUDY FENG, WILLIAM MOUYOS
  • Publication number: 20120154719
    Abstract: In order to provide a light diffusion polarizing sheet which reduces generation of an image blur and is easily manufactured, a light diffusion polarizing sheet (1) according to the present invention includes a polarizer (2) and a light diffusion layer (3). The polarizer (2) includes a polarizing layer (4) and a first protective layer (6) to which the polarizing layer (4) is attached via an adhering layer (5). In the polarizer (2), the light diffusion layer (3) is provided on a surface of the polarizing layer (4), on which surface the first protective layer (6) is not provided. This reduces a distance from a liquid crystal cell (8) to the light diffusion layer (3), and therefore reduces the number of members and the number of process.
    Type: Application
    Filed: November 19, 2010
    Publication date: June 21, 2012
    Applicant: SHARP KABUSHIKI KAISHA
    Inventor: Tokiyoshi Umeda
  • Patent number: 8133428
    Abstract: To provide a photocurable composition with which a fine pattern molded product on which a fine pattern of a mold is highly precisely transferred can efficiently be produced. A photocurable composition comprising 100 parts by mass of a photocurable monomer (A), from 5 to 60 parts by mass of a colloidal silica (B) (solid content) having an average particle size of at most 200 nm, and from 0.1 to 10 parts by mass of a photopolymerization initiator (C), wherein the photocurable monomer (A) comprises a multifunctional monomer (A1) having at least 3(meth)acryloyloxy groups in one molecule and a bifunctional monomer (A2) having two (meth)acryloyloxy groups in one molecule, at least one compound belonging to the multifunctional monomer (A1) or the bifunctional monomer (A2) has a hydroxy group, and the ratio of the total amount (mol) of hydroxy groups to the total amount (mol) of the multifunctional monomer (A1) and the bifunctional monomer (A2) is at least 10%.
    Type: Grant
    Filed: March 25, 2010
    Date of Patent: March 13, 2012
    Assignee: Asahi Glass Company, Limited
    Inventors: Yuriko Kaida, Hiroshi Sakamoto, Hirotsugu Yamamoto
  • Publication number: 20120033155
    Abstract: There is provided a protective film to be bonded to a polarizer to form a lower polarizing plate for a liquid crystal display panel. The protective film for a lower polarizing plate includes a matrix of a resin material and a diffusing component dispersed in the matrix. At least one-side surface, which is to face the polarizer, of the protective film is flat.
    Type: Application
    Filed: July 14, 2011
    Publication date: February 9, 2012
    Applicant: Dai Nippon Printing Co., Ltd.
    Inventors: Eiji ASANO, Mitsuru Inoue, Katsunori Shintani, Daijiro Kodama, Keiko Kitano
  • Patent number: 8033674
    Abstract: The present invention provides a polarization-sensitive light homogenizer and a backlight and display using the same. The homogenizer improves the spatial luminance and color uniformity, increases the luminance in a direction normal to the homogenizer and provides increased luminance through polarized light recycling within the light homogenizer and backlight. In one embodiment, the homogenizer includes a polarization-sensitive anisotropic light-scattering (PDALS) region, a non-polarization-sensitive anisotropic light-scattering region, and a substantially non-scattering region. In a further embodiment, the non-scattering region is birefringent. The spatially non-uniform incident light flux from a backlight including one or more non-extended light emitting sources is scattered efficiently by the NPDASL region and is incident on the PDALS region which backscatters light orthogonal to the polarization state desired for efficient illumination of a liquid crystal display panel.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: October 11, 2011
    Assignee: Fusion Optix, Inc.
    Inventors: Zane Coleman, Terence Yeo, Timothy Kelly
  • Publication number: 20110181953
    Abstract: A polarizing element includes fine metal particles formed in numerous regions that were occupied by respective substantially needle-like metal halide fine particles before reduction that are oriented and dispersed in a glass substrate such that the lengthwise directions thereof are almost the same, the fine metal particles being produced by heat-treating the glass substrate in a reducing atmosphere to reduce the substantially needle-like metal halide fine particles. The number of fine metal particles present in at least some of the numerous regions is two or more in each region, 90% or more of the regions each have a volume of 2,500 to 2,500,000 nm3, and the individual volumes of the fine metal particles present in each region are 4 to 40% of the volume of the region in 90% or more of the total number of the regions.
    Type: Application
    Filed: January 31, 2011
    Publication date: July 28, 2011
    Applicant: HOYA CANDEO OPTRONICS CORPORATION
    Inventors: Yoshitaka YONEDA, Michiyori Miura, Toshiaki Sonehara