Abstract: The present invention relates to a resin composition for forming an optical film, an optical film, and a polarizing plate, in which the resin composition for forming an optical film improves adhesion between an antiglare layer and a light-transmitting substrate film and enables the antiglare layer and the optical film to exhibit excellent optical properties such as appropriate haze, low gloss value, and excellent antiglare properties.
Type:
Grant
Filed:
December 18, 2017
Date of Patent:
November 1, 2022
Assignee:
LG CHEM, LTD.
Inventors:
Jung Hyun Seo, Yeong Rae Chang, Jin Young Park, Han Na Lee
Abstract: A monolithically integrated, tunable infrared pixel comprises a combined broadband detector and graphene-enabled tunable metasurface filter that operate as a single solid-state device with no moving parts. Functionally, tunability results from the plasmonic properties of graphene that are acutely dependent upon the carrier concentration within the infrared. Voltage induced changes in graphene's carrier concentration can be leveraged to change the metasurface filter's transmission thereby altering the “colors” of light reaching the broadband detector and hence its spectral responsivity. The invention enables spectrally agile infrared detection with independent pixel-to-pixel spectral tunability.
Type:
Grant
Filed:
July 16, 2020
Date of Patent:
October 25, 2022
Assignee:
National Technology & Engineering Solutions of Sandia, LLC
Inventors:
Thomas Edwin Beechem, III, Michael Goldflam, Anna Tauke-Pedretti, Isaac Ruiz, David W. Peters, Stephen W. Howell
Abstract: The system and method for imaging having filter containing polarized elements, multispectral elements or both being oscillated in circular or linear motion so each individual pixel will view a scene thru the individual filters. The motion of the filter is synchronized with a frame rate of an imager. In one example this is accomplished by micro actuators. Each pixel sampling feeds a processor detection algorithm that determines if a multispectral/polarization signature is present in the scene.
Type:
Grant
Filed:
September 25, 2019
Date of Patent:
October 18, 2022
Assignee:
BAE Systems Information and Electronic Systems Integration Inc.
Inventors:
Michael J. Choiniere, Jay W. Coffey, Jason R. Lane, Davis A. Lange, Jason T. Stockwell
Abstract: A method for producing an aluminum layer is provided. The method includes depositing a metallic seed layer on a substrate, the seed layer having a thickness of not more than 5 nm, and also includes applying the aluminum layer to the seed layer, wherein the aluminum layer has a thickness of more than 30 nm. Further, an optical element, which can be a mirror layer, is provided including the metallic seed layer and the aluminum layer.
Type:
Grant
Filed:
August 14, 2020
Date of Patent:
October 11, 2022
Assignees:
Fraunhofer-Gesellschaft zur Förderung der angewandten
Forschung e. V., Friedrich-Schiller-Universität Jena
Inventors:
Sven Stempfhuber, Dieter Gäbler, Paul Schmitt, Peter Munzert, Stefan Schwinde
Abstract: A lens driving module includes a holder, a cover, a carrier, at least one first magnet, a first coil, at least two second magnets, at least one first sensor and at least one second sensor. The holder includes an opening hole. The cover is made of metal material and coupled to the holder. The carrier is movably disposed in the cover and for coupling to a lens. The first magnet is movably disposed in the cover. The first coil is wound around an outer side of the carrier. The second magnets are disposed on one end of the carrier. The first sensor is for detecting a magnetic field of the second magnets. The second sensor is for detecting a magnetic field of the first magnet.
Abstract: An optical film, a backlight unit, and a display device are provided. An optical film includes: a plurality of base layers arranged at predetermined intervals in a horizontal direction, and a plurality of barriers respectively provided between pairs of the plurality of base layers, wherein each of the plurality of barriers includes first and second films inclined with a first inclined angle with respect to a lower surface of each of the plurality of base layers, wherein the first film is configured to: transmit light polarized in a first direction, and reflect light polarized in a second direction perpendicular to the first direction, and wherein the second film is configured to phase-retard the light polarized in the first direction to the light polarized in the second direction.
Abstract: Example systems may include one or both of a light emitter and a light receiver, and an optical filter. The optical filter may include a wavelength selective scattering layer configured to scatter visible light. The optical filter may include a wavelength selective reflecting layer having a predetermined transmission band configured to compensate for a color deviation. The optical filter may include a broadband reflecting layer having a predetermined reflection band configured to compensate for a color deviation. The optical filter may include a low-index layer configured to reduce a color deviation in light emitted by the light emitter or received by the light receiver. The wavelength selective scattering layer may include nanoparticles dispersed in a binder, wherein the ratio of the nanoparticles to the binder by weight is at least 50%. Example articles may include example optical filters.
Type:
Grant
Filed:
January 3, 2018
Date of Patent:
September 20, 2022
Assignee:
3M INNOVATIVE PROPERTIES COMPANY
Inventors:
Guanglei Du, John A. Wheatley, Matthew E. Sousa, Anthony M. Renstrom, Neeraj Sharma
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
Abstract: Systems and methods providing optical structures providing a large field of view (FOV) for personal portable displays are described. An optical structure of embodiments comprises a catadioptric optical configuration configured to produce a magnified curved intermediate image, wherein the magnified curved intermediate image is furthered magnified with proper reflection angle and transmitted to viewer's eye. The catadioptric optical configuration may comprise two curved mirrors and a polarization prism. Optical structures comprising such catadioptric optical configurations may utilize relatively small sized image sources to produce a large FOV. Such optical structures are well suited for use in large FOV optical see through (OST) head-mounted displays (HMDs).
Type:
Grant
Filed:
March 13, 2019
Date of Patent:
September 6, 2022
Assignee:
Hong Kong Applied Science and Technology Research Institute Co., Ltd.
Inventors:
Dehua Liu, Chun Yip Wong, Kin Lung Chan
Abstract: A polarizing plate and a liquid crystal display including the same are provided. A polarizing plate includes a polarizing film and a contrast-improving optical film sequentially stacked in the stated order. The contrast-improving optical film includes a contrast-improving layer including a first resin layer and a second resin layer facing the first resin layer. The second resin layer includes a patterned portion having optical patterns and a flat section between the optical patterns. The second resin layer satisfies Equation 1, and the polarizing plate has a contrast ratio gain of about 1.00 or more, as represented by Equation 2.
Type:
Grant
Filed:
February 8, 2022
Date of Patent:
August 30, 2022
Assignee:
Samsung SDI Co., Ltd.
Inventors:
Dae Seob Shim, Young Oh, Dong Ho Wee, Jeong Ho Lee, Yong Un Jung, Jang Hyun Cho, Young Hyun Ju
Abstract: A dielectric layer comprising an embossed surface and a flat surface which is located at a side opposite to the embossed surface is provided. The plane that approximates the flat surface is the X-Y plane, and the normal direction to the X-Y plane is the Z direction. The embossed surface has inclined surfaces that are inclined with respect to the Z direction, and the inclined surfaces reflect incident light incident on the dielectric layer and emerge reflected light. The elevation angle, which is an angle between the inclined surface and the X-Y plane, is ?. The refractive index of the dielectric layer is n. These values satisfy Formula (1): sin ??(1/n)<sin 2?.
Abstract: A screen protector configured to be disposed on an attaching body on an electronic device in an attaching mode to correspondingly cover a display screen of the electronic device. The screen protector comprises a grating sheet and a first attaching member disposed vertically adjacent to each other side-by-side and coated between two outer cover films. The screen protector is disposed on the attaching body on the electronic device in an attaching mode through the attaching member, so that a viewing zone defined by the grating sheet correspondingly covers the display screen of the electronic device.
Abstract: Disclosed are a camera protection device and a mobile phone protection jacket. The camera protection device includes: a first sheet body having a first hole structure configured for cooperation with a camera of a mobile phone and a second hole structure configured for cooperation with a flash lamp of the mobile phone, and a light shielding structure formed integrally or separately with the first sheet body, the light shielding structure being arranged between the flash lamp and a lens protection film of the camera. The mobile phone protection jacket is provided with the camera protection device according to any implementation in the first aspect.
Abstract: An optical filter includes a substrate and a first filter layer stacked on a first surface of the substrate. The first filter layer includes a plurality of lower refractive index layers having a refractive index of less than 3; a plurality of higher refractive index layers having a refractive index of greater than 3; and a plurality of medium refractive index layers having a refractive index of 3 or more and smaller than that of the higher refractive index layers, and one higher refractive index layer and one medium refractive index layer are interposed in at least one of regions between two lower refractive index layers.
Type:
Grant
Filed:
March 12, 2020
Date of Patent:
August 2, 2022
Assignee:
OPTRONTEC CO., LTD.
Inventors:
Dong Hwan Kim, Yun Sik Hwang, Won Young Kim
Abstract: Disclosed herein is a flexible polarizing cover plate including laminated polarizers and a hard coating. The hard coating includes a viewable area and a black matrix area surrounding the viewable area. The black matrix area includes a plurality of grooves surrounding the viewable area and ink filled and cured in the plurality of grooves. A preparation method of a flexible polarizing cover plate, a display panel and a display device including the flexible polarizing cover plate are also provided.
Abstract: The purpose of the present invention is to provide: a high-performance polarizing plate which functions for light in an infrared wavelength range; and a liquid-crystal display device or the like comprising the same. Provided is a polarizing plate for an infrared range, which is a stretched film containing a dye exhibiting absorption in an infrared range, the film exhibiting dichroism.
Abstract: A finite conjugate optical assembly including a core zoom module that includes five optical groups that are configured to provide a ratio of highest to lowest magnification between 5.5:1 and 16:1. A lens attachment module and rear adapter module may be disposed, respectively, on an object side and an image side of the optical assembly. The optical assembly may exhibit an approximate etendue between 0.95 and 4.65 mm2sr, and may have a magnification of 2× or more at one or more points of the zoom. The optical assembly may be configured in accordance with between 6.6 MP and 32 MP image sensors.
Abstract: A finite conjugate optical assembly, comprising a lens with a core zoom module that includes five optical groups that are configured to exhibit at least 1.58 mm2sr of etendue at a lowest magnification position, and a ratio of highest to lowest magnification of at least 7:1, and to provide a maximum magnification of 2× or greater.
Abstract: A finite conjugate lens assembly including an afocal zooming component that has five optical groups that are configured to provide a ratio of highest to lowest magnification between 5.5:1 and 16:1. A lens attachment module and rear adapter module may be disposed, respectively, on an object side and an image side of the optical assembly. The lens assembly may exhibit an approximate etendue between 0.95 and 4.65 mm2sr, and may be configured in accordance with between 6.6 MP and 32 MP image sensors.
Abstract: Provided are a polarizing plate having excellent optical properties and durability, and a method for manufacturing the polarizing plate. The polarizing plate includes: a transparent substrate transparent to light in a used wavelength band; lattice-shaped protrusions arranged on the transparent substrate at a pitch shorter than the wavelength of light in the used wavelength band, extending in a predetermined direction, and having a reflective layer, a first dielectric layer, an absorbing layer, and a second dielectric layer in this order; a dielectric portion consisting of a dielectric discontinuously formed on a surface of the lattice-shaped protrusions and a surface of a bottom floor between the lattice-shaped protrusions; and a water-repellent portion formed on a surface of the dielectric portion and having water-repellent properties.