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公开(公告)号：US12259572B2
公开(公告)日：2025-03-25
申请号：US18544094
申请日：2023-12-18
Applicant: Optivision Technology Inc.
Inventor： Chung-Wei Wang , Li-Jen Hsu , Hao-Ying Hsu
IPC: F21V8/00
Abstract: An optical composite structure includes first, second and third prism sheets. The first prism sheet has a first light incident surface and a first light exit surface opposite to each other. The second prism sheet has a second light incident surface facing the first light exit surface and a second light exit surface opposite to the second light incident surface, and includes a haze layer having the second light incident surface and a prism layer which is stacked on the haze layer and which has the second light exit surface. The third prism sheet has a third light incident surface facing the second light exit surface, and includes a haze layer and a prism layer stacked on the haze layer of the third prism sheet. The haze layer of the third prism sheet has a haze greater than a haze of the haze layer of the second prism sheet.
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2.发明授权公开(公告)号：US11719862B2
公开(公告)日：2023-08-08
申请号：US17135137
申请日：2020-12-28
Applicant: Optivision Technology Inc.
Inventor： Li-Jen Hsu , Nan-Hung Kuo , Tsung-Hsien Wu , Young-Cheng Chou
CPC classification number: G02B3/08 , B29D11/00269 , G02B1/041 , G02B1/14 , B29K2033/12
Abstract: 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 μm. The base has a width not greater than 250 μm. A method and a mold for producing the optical lens device are also disclosed.
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Patent Agency Ranking
公开(公告)号：US10551551B2
公开(公告)日：2020-02-04
申请号：US16175447
申请日：2018-10-30
Applicant: Optivision Technology Inc.
Inventor： Li-Jen Hsu , Chun-Hsien Lu , Huan-Hsiang Li , Tsung-Hsien Wu
IPC: F21V8/00
Abstract: 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.
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公开(公告)号：US11360257B1
公开(公告)日：2022-06-14
申请号：US17243222
申请日：2021-04-28
Applicant: Optivision Technology Inc.
Inventor： Nan-Hung Kuo , Li-Jen Hsu , Tsung-Hsien Wu , Young-Cheng Chou
Abstract: 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.
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公开(公告)号：US11187845B2
公开(公告)日：2021-11-30
申请号：US16943747
申请日：2020-07-30
Applicant: Optivision Technology Inc.
Inventor： Chung-Wei Wang , Li-Jen Hsu
Abstract: 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.
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公开(公告)号：US10754079B1
公开(公告)日：2020-08-25
申请号：US16398530
申请日：2019-04-30
Applicant: Optivision Technology Inc.
Inventor： Chia-Kuo Kao , Tsung-Hsien Wu , Li-Jen Hsu
Abstract: 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.
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公开(公告)号：US20160153638A1
公开(公告)日：2016-06-02
申请号：US14630650
申请日：2015-02-25
Applicant: OPTIVISION TECHNOLOGY INC.
Inventor： Kuang-Lin Yuan , Li-Jen Hsu , Chun-Ming Hsu , Wei-Chun Peng
IPC: F21V5/00
CPC classification number: G02B5/0231
Abstract: An optical prism sheet includes a transparent substrate having a light-entrance surface, and a plurality of elongated prisms that protrude from the transparent substrate. Each of the prisms has a scalene triangular cross-section and first and second surfaces that intersect each other to define an apex angle. The apex angle of each of the prisms is divided by a normal line of the transparent substrate into first and second sub-angles that are different from each other. At least one of the light-entrance surface and the first and second surfaces of each of the prisms is roughened to form a plurality of micro-protrusions, each of which has a height ranging from 0.1 μm to 5 μm.
Abstract translation: 光学棱镜片包括具有光入射面的透明基板和从透明基板突出的多个细长棱镜。 每个棱镜具有斜角三角形横截面和彼此相交以限定顶角的第一和第二表面。 每个棱镜的顶角由透明基板的法线划分成彼此不同的第一和第二子角。 每个棱镜的光入射表面和第一和第二表面中的至少一个被粗糙化以形成多个微突起，每个微突起具有0.1μm至5μm的高度。
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