Patents Assigned to Optivision Technology Inc.
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Patent number: 11719862Abstract: An optical lens device for a head-mounted display includes a transparent support substrate and a Fresnel lens disposed thereon. The Fresnel lens includes a central lens element and a plurality of prismatic elements arranged relative to the central lens element in a proximal-to-distal manner. Each of the prismatic elements has a base facing toward the support substrate, and a draft facet and a sloped facet extending from the base away from the support substrate to intersect with each other to form an apex. Each of the prismatic elements has a height measured from the base to the apex and not greater than 75 ?m. The base has a width not greater than 250 ?m. A method and a mold for producing the optical lens device are also disclosed.Type: GrantFiled: December 28, 2020Date of Patent: August 8, 2023Assignee: OPTIVISION TECHNOLOGY INC.Inventors: Li-Jen Hsu, Nan-Hung Kuo, Tsung-Hsien Wu, Young-Cheng Chou
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Patent number: 11360257Abstract: A light guide substrate includes first and second triangular prisms juxtaposed to each other on a light exit face thereof. Each of the first and second triangular prisms has a rounded vertex. The number of the first triangular prisms is smaller than the number of the second triangular prisms. Each first triangular prism has a first height from the light exit face. Each second triangular prisms has a second height from the light exit face. The second height is between 20 and 90 percent of the first height. A backlight module includes the aforesaid light guide substrate, a reverse prism sheet disposed on the light guide substrate, and a light emitting unit to emit light rays into the light substrate.Type: GrantFiled: April 28, 2021Date of Patent: June 14, 2022Assignee: OPTIVISION TECHNOLOGY INC.Inventors: Nan-Hung Kuo, Li-Jen Hsu, Tsung-Hsien Wu, Young-Cheng Chou
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Patent number: 11187845Abstract: A backlight module includes a light guide plate, a light source, a prism sheet, and a reflective film. The light source is disposed on a light-incident surface of the light guide plate. The prism sheet is disposed on a light exit surface of the light guide plate, and includes a plurality of first prism structures that protrude toward the light exit surface of the light guide plate. The reflective film is disposed on a reflection surface of the light guide plate, and includes a film body, a plurality of second prism structures that are disposed on the film body and that protrude from the film body toward the reflection surface, and a light absorbing layer that is disposed on the film body opposite to the second prism structures.Type: GrantFiled: July 30, 2020Date of Patent: November 30, 2021Assignee: OPTIVISION TECHNOLOGY INC.Inventors: Chung-Wei Wang, Li-Jen Hsu
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Patent number: 10754079Abstract: A light guide plate includes a plate body having a light exit surface, a reflection surface opposite to the light exit surface, and a light-incident surface connected between the light exit surface and the reflection surface and adapted to face a light source. The light-incident surface includes a vertical portion perpendicularly connected to the light exit surface, and a sloped portion connecting the vertical portion and the reflection surface. The sloped portion is inwardly inclined from the vertical portion towards the reflection surface.Type: GrantFiled: April 30, 2019Date of Patent: August 25, 2020Assignee: OPTIVISION TECHNOLOGY INC.Inventors: Chia-Kuo Kao, Tsung-Hsien Wu, Li-Jen Hsu
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Patent number: 10551551Abstract: A light guide plate includes a light guide layer and a first microstructure layer. The light guide layer has a light exit surface, a back surface, and a light incidence surface interconnecting the light exit surface and the back surface. The first microstructure layer is disposed on the back surface, and includes a plurality of first microstructures spaced apart from one another. Each first microstructure has a polygonal planar base, and two first inclined faces and two second inclined faces which extend from the planar base, and which are proximal and distal to the light incidence surface, respectively. Each first inclined face intersects the respective second inclined face at a respective first ridge. Each first ridge cooperates with the planar base to form a first angle that ranges from 5 to 70 degrees.Type: GrantFiled: October 30, 2018Date of Patent: February 4, 2020Assignee: OPTIVISION TECHNOLOGY INC.Inventors: Li-Jen Hsu, Chun-Hsien Lu, Huan-Hsiang Li, Tsung-Hsien Wu
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Patent number: 9151886Abstract: An optical thin film includes: a transparent substrate including a first surface and a second surface which is opposite to the first surface; a first light-condensing layer formed on the first surface of the transparent substrate, the first light-condensing layer having a haze value ranging from 5% to 30% and a surface roughness ranging from 0.1 RMS to 1 RMS; and a second light-condensing layer formed on the second surface of the transparent substrate. The second light-condensing layer has a haze value ranging from 70% to 100% and a surface roughness ranging from 1 RMS to 10 RMS.Type: GrantFiled: June 30, 2014Date of Patent: October 6, 2015Assignee: OPTIVISION TECHNOLOGY INC.Inventors: Kuang-Lin Yuan, Wen-Hao Liu, Shih-Ming Chen
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Patent number: 8089697Abstract: A method for making a prismatic laminate includes the steps of: a) forming a back-coating roller having a roller surface with a plurality of recesses arranged in a predetermined pattern and produced by laser holography; b) preparing a prismatic structure including a plate body having a first surface and a second surface opposite to the first surface, and a plurality of prismatic strips formed on the first surface of the plate body; c) applying a coating containing a resin component and an antistatic agent on the second surface of the plate body; and d) embossing the coating with the back-coating roller to form an optical layer including a plurality of microstructures protruding in a direction away from the second surface of the plate body and having a pattern corresponding to that of the recesses in the roller surface.Type: GrantFiled: January 5, 2010Date of Patent: January 3, 2012Assignee: Optivision Technology Inc.Inventors: Whey-Bin Lor, Kuang-Lin Yuan, Ru-Ping Huang, Chia-Chu Lin, Tsung-Sung Tsai, Ming-Hsiang Lee, Ching-Hung Lin, Ming-Cheng Shih
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Publication number: 20110038052Abstract: A method for making a prismatic laminate includes the steps of: a) forming a back-coating roller having a roller surface with a plurality of recesses arranged in a predetermined pattern and produced by laser holography; b) preparing a prismatic structure including a plate body having a first surface and a second surface opposite to the first surface, and a plurality of prismatic strips formed on the first surface of the plate body; c) applying a coating containing a resin component and an antistatic agent on the second surface of the plate body; and d) embossing the coating with the back-coating roller to form an optical layer including a plurality of microstructures protruding in a direction away from the second surface of the plate body and having a pattern corresponding to that of the recesses in the roller surface.Type: ApplicationFiled: January 5, 2010Publication date: February 17, 2011Applicant: OPTIVISION TECHNOLOGY INC.Inventors: Whey-Bin Lor, Kuang-Lin Yuan, Ru-Ping Huang, Chia-Chu Lin, Tsung-Sung Tsai, Ming-Hsiang Lee, Ching-Hung Lin, Ming-Cheng Shih
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Patent number: 7887221Abstract: One face of a substrate of a diffuser with a light condensing function is disposed with a plurality of prism rods; at least one inclined face of parts of prism rods is disposed with a rough diffusion face; the diffusion face may be positioned on any position of the inclined face of the prism rod; the diffusion face is disposed with a plurality of irregularly arranged raised and indented stripes perpendicular, not perpendicular or parallel to a crest line of the prism rod; chromatid dispersion can be reduced and stripes of the prism rods can be atomized effectively by utilizing the diffusion face to eliminate the occurrence of moiré fringes and elevate the yield factor.Type: GrantFiled: March 31, 2008Date of Patent: February 15, 2011Assignee: Optivision Technology Inc.Inventors: Whey-Bin Lor, Kuang-Lin Yuan, Wen-Hao Liu
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Publication number: 20100097706Abstract: An optical sheet is adapted for diffusing and converging light, and includes a light-transmissive base layer, a prism layer, and a plurality of diffusion regions. The base layer has a first surface and a second surface that is opposite to the first surface. The prism layer is provided on the first surface of the base layer and has a plurality of prisms, each of which has a peak and two inclined surfaces that meet at the peak. At least two of the peaks of the prisms are different in height. The diffusion regions are disposed on the inclined surfaces of the prisms. Each of the diffusion regions is in the form of a roughened surface.Type: ApplicationFiled: March 24, 2009Publication date: April 22, 2010Applicant: Optivision Technology, Inc.Inventors: Whey-Bin LOR, Kuang-Lin YUAN, Chia-Chu LIN