Pile-of-plates Polarizer Patents (Class 359/485.04)
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Patent number: 11353643Abstract: Provided are a polarizing plate, a method of manufacturing same, and a display device including same. The polarizing plate comprises: a polarizer; a polarizer protective film disposed on at least one surface of the polarizer; an adhesive layer interposed between the polarizer and the polarizer protective film; and a print layer interposed between the polarizer and the polarizer protective film, and formed on at least a portion of the edge of the adhesive layer. The print layer comprises: a pigment; an organic resin binder; a reactive unsaturated compound; a photopolymerization initiator; and a solvent.Type: GrantFiled: January 18, 2017Date of Patent: June 7, 2022Assignee: Samsung SDI Co., Ltd.Inventors: Jin Woo Kim, Dong Yoon Shin, Ji Hyun Wi, Yeon Ju Jung
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Patent number: 10197802Abstract: A compact, lightweight, multi-wavelength display system which can be used for simultaneous viewing with both eyes is provided. The system utilizes a field flattener lens to remove abrasions introduced by the system's lenses. The system also uses a polarization selective optical element that reflects one linear polarization state while transmitting radiation of the orthogonal linear polarization state. The PS element is used in combination with a quarter wave plate and an optical element, the optical element including a partially reflective surface. The optical element may either be a single element or an optical doublet. In the latter configuration, the partially reflective surface is at the interface between the two singlets that comprise the doublet. The system also includes an image source that either alone, or in combination with other optical elements, produces circularly polarized light of the desired rotary sense.Type: GrantFiled: July 28, 2017Date of Patent: February 5, 2019Assignee: INTEVAC, INC.Inventor: Michael James Hoppe
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Patent number: 10180594Abstract: The present invention provides a mirror display that can suppress warp of a half mirror plate with a reflective polarizer under heat to prevent distortion of a reflected image in a mirror mode. The mirror display of the present invention includes a half mirror plate that includes a first reflective polarizer and a first base material, a display device, and a warp-suppressing member that suppresses shrinking of the first reflective polarizer under heat. The first reflective polarizer and the first base material are integrated, and the display device is disposed on the back surface side of the half mirror plate.Type: GrantFiled: April 21, 2015Date of Patent: January 15, 2019Assignee: Sharp Kabushiki KaishaInventors: Hiroyuki Hakoi, Masahiro Hasegawa, Akira Sakai, Kiyoshi Minoura
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Patent number: 10001587Abstract: A brightness enhancement film including a monolithic layer and a microstructured layer adjacent the monolithic layer. The microstructured layer has a first major surface and an opposing second major surface. The first major surface includes a first plurality of microstructures and the second major surface faces the first monolithic layer. The monolithic layer includes a polyester that includes at least about 70 mole percent naphthalenedicarboxylate groups based on total carboxylate groups. The polyester may include one or more catalysts having a total concentration by weight in a range of 10 to 1000 ppm. The first monolithic layer has a thickness in the range of about 5 ?m to about 300 ?m. The first monolithic layer may be substantially free of non-catalyst particulate matter and may have a haze of less than 1 percent.Type: GrantFiled: March 27, 2015Date of Patent: June 19, 2018Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventor: Richard Y. Liu
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Patent number: 9964677Abstract: A reflective film includes a first optical stack that provides a first reflective characteristic and a second optical stack that provides a second reflective characteristic. The optical stacks also have first and second absorptive characteristics that are suitable to absorptively heat the respective stacks upon exposure to light including a write wavelength while maintaining the structural integrity of the stacks. The absorptive heating can change the first and second reflective characteristics to third and fourth reflective characteristics, respectively. A blocking layer that at least partially blocks light of the write wavelength may also be provided between the optical stacks to permit absorptive heating of any selected one of the optical stacks. The reflective characteristics of the optical stacks can thus be independently modified in any desired patterns by appropriate delivery of light beams that include the write wavelength.Type: GrantFiled: March 18, 2015Date of Patent: May 8, 2018Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: William W. Merrill, Douglas S. Dunn, Przemyslaw Pawel Markowicz
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Patent number: 9575298Abstract: A light collector includes: a light guide; optical blocks, each of which has top and bottom surfaces and front and rear surfaces which extend curvedly and frontwardly from the top surface to the bottom surface, the rear surface exhibiting total internal reflection and having a focal point; and optical coupling protrusions, each of which protrudes from the bottom surface, each of which is disposed at the focal point and each of which is coupled to the light-entrance surface of the light guide. The front surface of one of every two adjacent ones of the optical blocks overlaps the rear surface of the other of every two adjacent ones of the optical blocks along a normal direction of the light guide.Type: GrantFiled: April 7, 2015Date of Patent: February 21, 2017Assignee: National Taiwan Normal UniversityInventors: Tun-Chien Teng, Wei-Che Lai
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Patent number: 9453954Abstract: To provide an inorganic polarizing plate which, when used in structures having different used wavelength bands, can reduce reflectance by using a common structure, making it possible to achieve a predetermined light extinction ratio. The inorganic polarizing plate has a substrate that is transparent to light in a used bandwidth, a reflective layer that is composed of grids that are formed on one surface of the substrate with a pitch that is smaller than a wavelength of light in the used bandwidth, a dielectric layer that is stacked on the reflective layer, and an absorbing layer containing FeSi fine particles.Type: GrantFiled: November 25, 2015Date of Patent: September 27, 2016Assignee: DEXERIALS CORPORATIONInventors: Koji Sasaki, Akio Takada
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Patent number: 9389483Abstract: A continuous spectrum generation apparatus including a laser light source and a plurality of condensed state transparent plates is provided. The laser light source is configured to emit a laser beam. The condensed state transparent plates are disposed on the transmission path of the laser beam in sequence, and configured to successively extend the spectral bandwidth of the laser beam in sequence. An assembling method of a continuous spectrum generation apparatus is also provided.Type: GrantFiled: April 15, 2015Date of Patent: July 12, 2016Assignee: National Tsung Hua UniversityInventors: Andrew Hing-Cheong Kung, Chih-Hsuan Lu
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Patent number: 9277863Abstract: The present invention provides methods, devices, and systems for automated measured correction of the eyes and provision of sunglasses and eyeglasses for individuals, including individuals with a visual acuity of 20/20 or better.Type: GrantFiled: November 28, 2012Date of Patent: March 8, 2016Assignee: Perfect Vision Technology (HK) Ltd.Inventor: Junzhong Liang
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Patent number: 8982461Abstract: A polarizer, having touch sensing capability includes a first transparent conducive layer, a second transparent conducive layer, a polarizing layer, first electrodes and second electrodes. The first transparent conducive layer has a minimal resistance along a first direction and a maximal resistance or insulation along a second direction. The second transparent conducive layer has a maximal resistance or insulation along the first direction and a minimal resistance along the second direction. The polarizing layer is located between the first transparent conducive layer and the second transparent conducive layer. The first electrodes are spaced with each other and arranged in a first row along the second direction and electrically connected with the first transparent conducive layer. The second electrodes are spaced with each other and arranged in a second row along the first direction and electrically connected with the second transparent conducive layer.Type: GrantFiled: December 29, 2012Date of Patent: March 17, 2015Assignee: Tianjin Funayuanchuang Technology Co., Ltd.Inventor: Ho-Chien Wu
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Publication number: 20140268328Abstract: A stack of polarization gratings each having a grating pitch, the stack having a first end and a second end and, the polarization grating stack including N stages wherein one or more of the N stages in the stack comprise a first set of gratings which direct an incident beam through angles lying substantially in a first plane and one or more of the N stages in the stack comprise a second set of gratings which direct an incident beam through angles lying substantially in a second, different, plane lying at an angle relative to the first plane and wherein each of the N stages provide one of a plurality of deflection angles and wherein the N stages are arranged such that a stage having the smallest deflection angle is nearest the first end of the stack and a stage having the largest deflection angle is nearest the second end of the stack and wherein the deflection angles of the gratings in each set are chosen such that the grating pitch of each grating is at least one of: substantially twice the grating pitch ofType: ApplicationFiled: March 13, 2013Publication date: September 18, 2014Inventors: Terry A. Dorschner, Irl W. Smith
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Patent number: 8734607Abstract: A method of producing an optical film laminate includes: a first film layer forming step of cutting a first optical film having an elongated shape into first optical film pieces along cutting lines crossing the longitudinal direction of the first optical film and disposing the first optical film pieces adjacent to each other in a substantially band or strip shape; a second film layer forming step of cutting a second optical film having an elongated shape into second optical film pieces along cutting lines crossing the longitudinal direction of the second optical film and disposing the second optical film pieces adjacent to each other in a substantially band or strip shape; and a cutting step of, while holding a third film layer made of the third optical film, the first film layer and the second film layer in a laminated state, cutting them into plural optical film laminates.Type: GrantFiled: September 14, 2012Date of Patent: May 27, 2014Assignee: Nitto Denko CorporationInventors: Daisuke Kumagai, Toshirou Nishikubo
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Patent number: 8480832Abstract: A method of manufacturing a laminate of three or more layers of optical films, including: forming a first and a second optical film pieces by cutting the first and second optical films having an elongated shape respectively; disposing the first and second optical film pieces adjacent to each other in a substantially band or strip shape with their optical orientation axis crossing the longitudinal direction of the band or strip-shape; laminating the first and second optical film pieces on a third optical film; and a cutting step of, while holding the third optical film, the first film layer and the second film layer in a laminated state, cutting them into plural pieces, and thereby forming optical film laminates.Type: GrantFiled: February 4, 2009Date of Patent: July 9, 2013Assignee: Nitto Denko CorporationInventors: Daisuke Kumagai, Toshirou Nishikubo
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Publication number: 20130038933Abstract: A beam splitter includes a substrate unit, and first and second prisms disposed on surfaces at two opposite sides of the substrate unit, respectively. The substrate unit includes a substrate member, and a beam splitter film disposed at the substrate member and capable of beam splitting. The beam splitter film includes a plurality of thin film layers arranged in a stack. Each of the thin film layers is made of an inorganic material.Type: ApplicationFiled: January 3, 2012Publication date: February 14, 2013Applicants: LITE-ON TECHNOLOGY CORP., SILITEK ELECTRONIC (GUANGZHOU) CO., LTD.Inventors: CHIEH-WEN WANG, WEI-JIE PENG, WEI-HWA LEE
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Publication number: 20120307362Abstract: An anti-reflective thin film coating formed on an optical surface, comprising a multilayer thin-film stack arranged to suppress reflection of incident polarized light within an incident light wavelength range. The multilayer thin-film stack further provides a reflectance edge transition at a wavelength band that lies outside the incident light wavelength range. The reflectance edge transition is arranged to provide phase difference compensation to the polarized light within the incident polarized light wavelength range.Type: ApplicationFiled: August 17, 2012Publication date: December 6, 2012Inventors: Barry D. Silverstein, Andrew F. Kurtz, Jennifer D. Kruschwitz
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Patent number: 8310623Abstract: An optical sheet and a liquid crystal display including the same are disclosed. The optical sheet includes a reflective polarizing film, a first adhesive layer on one surface of the reflective polarizing film, and a first diffusion layer on the first adhesive layer. The first adhesive layer has first and second thicknesses. The first diffusion layer includes a first light transmitting material and a plurality of first diffusion particles. At least one of the first diffusion particles has a portion protruding above a surface of the first light transmitting material, and a height of the portion, h1, substantially satisfies the following equation: 0.1D1?h1?0.7D1, where D1 is a diameter of the at least one of the first diffusion particles. The first thickness, T1, and the second thickness, T2, substantially satisfy the following equation: 10 nm?|T1?T2|?2 ?m.Type: GrantFiled: November 26, 2008Date of Patent: November 13, 2012Assignee: LG Electronics Inc.Inventors: Junghoon Lee, Kyongrae Kim
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Patent number: 8300312Abstract: An optical element that has a flat plate shape and includes a light entering surface and a light exiting surface substantially parallel with the light entering surface, the element includes a plurality of translucent members, a plurality of optical multilayer films, a plurality of phase plates, and a plurality of plasma polymerized films. The translucent members, the optical multilayer films, the phase plates, and the plasma polymerized films are provided along the light entering surface and the light exiting surface. The translucent members include a plurality of oblique surfaces oblique to the light entering surface and the light exiting surface. Each of the optical multilayer films is formed on some of the oblique surfaces. The optical multilayer film is either one of a polarization separating film and a reflecting film.Type: GrantFiled: November 16, 2009Date of Patent: October 30, 2012Assignee: Seiko Epson CorporationInventors: Shuho Kobayashi, Akiko Takeshita
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Patent number: 8279523Abstract: A polarization conversion element includes: a plurality of light transmitting substrates sequentially bonded at a plurality of inclined planes thereof that form an angle of approximately 45° with respect to a light incident face and a light emitting face being approximately parallel to the light incident face; a retardation plate providing a phase difference to incident polarized light; a polarization separation film separating incident light into two types of polarized light; and an air layer. In the element, the polarization separation film and the air layer are alternately formed along the plurality of inclined planes.Type: GrantFiled: August 21, 2008Date of Patent: October 2, 2012Assignee: Seiko Epson CorporationInventors: Kohei Yamada, Isamu Aoki, Shuho Kobayashi
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Projector having polarization conversion element array and light shielding sections provided thereon
Patent number: 8186832Abstract: A projector includes: a light source; a polarization conversion element array having an entrance surface on which an effective entrance area and an ineffective entrance area are disposed to form stripes; a modulation device adapted to modulate a linearly polarized light beam emitted from the polarization conversion element array in accordance with an image signal; a projection device adapted to project the modulated light beam; a first light shielding section, a part of the entrance surface being provided with the first light shielding section adapted to shield a part of the incident light beam to the effective entrance area; and a first opening section, the first opening section being another area of the entrance surface than the part provided with the first light shielding section, at least a part of the first opening section reaches an end of the entrance surface.Type: GrantFiled: July 22, 2009Date of Patent: May 29, 2012Assignee: Seiko Epson CorporationInventors: Daisuke Hayashi, Kanji Yoshida -
Publication number: 20120008096Abstract: Optical elements, color combiners using the optical elements, and image projectors using the color combiners are described. The optical element includes light recycling stacks, a polarizing beam splitter, and a color-selective stacked retardation polarizing filter. The polarizing beam splitter includes a first reflective polarizer aligned to a first polarization direction. Each light recycling stack includes a second reflective polarizer aligned to the first polarization direction, and a retarder aligned at 45 degrees to the first polarization direction. The color combiner includes partially reflective light sources coupled to the optical element. Un-polarized light having different colors can enter the color combiner through the light recycling stacks, and combined light of a desired polarization state can exit the color combiner. Light having an undesired polarization state can be recycled to the desired polarization state within the color combiner, so that light utilization efficiency is increased.Type: ApplicationFiled: December 22, 2008Publication date: January 12, 2012Inventors: Simon Magarill, Charles L. Bruzzone, Andrew J. Ouderkirk
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Publication number: 20110242959Abstract: [Problems to be Solved] To obtain a laminated quarter-wave plate having a bandwidth of a plurality of wavelengths to be a phase difference of 90 degrees broadened [Means to Solve the Problem] A laminated wave plate of the present invention includes a first wave plate having a phase difference of ?1 and a second wave plate having a phase difference of ?2 with respect to a wavelength ?, the first wave plate and the second wave plate being bonded together so that an optical axis of the first wave plate and an optical axis of the second wave plate are intersected each other to function as a quarter-wave plate as a whole, the laminated wave plate comprising following equations from (1) to (6): ?1=360×(n1+1) . . . (1); ?2=90×(2×n2+1) . . . (2); ??1=(?12a??11a)/(?12??11) . . . (3); ??2=(?12b??11b)/(?12??11) . . . (4); cos 2?1=1?(1?cos ??F)/2(1?cos ??1) . . . (5); and ?2=45°±5° . . .Type: ApplicationFiled: June 14, 2011Publication date: October 6, 2011Applicant: EPSON TOYOCOM CORPORATIONInventor: Masayuki Oto