公开(公告)号：US20200271845A1

公开(公告)日：2020-08-27

申请号：US16398530

申请日：2019-04-30

Applicant: Optivision Technology Inc.

Inventor： Chia-Kuo KAO ,  Tsung-Hsien WU ,  Li-Jen HSU

IPC: F21V8/00

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.

公开(公告)号：US20220206192A1

公开(公告)日：2022-06-30

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

IPC: G02B3/08 ,  G02B1/04 ,  G02B1/14 ,  B29D11/00

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.

公开(公告)号：US20210325597A1

公开(公告)日：2021-10-21

申请号：US16943747

申请日：2020-07-30

Applicant: Optivision Technology Inc.

Inventor： Chung-Wei WANG ,  Li-Jen HSU

IPC: F21V8/00 ,  G02B5/00

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.

公开(公告)号：US20170199309A1

公开(公告)日：2017-07-13

申请号：US15333875

申请日：2016-10-25

Applicant: Optivision Technology Inc.

Inventor： Kuang-Lin YUAN ,  Tsung-Hsien WU ,  Li-Jen HSU ,  Ming-Cheng SHIH ,  Pei-Heng LEE ,  Yen-Shao LIN ,  Yu-Hsin CHANG

IPC: G02B5/02 ,  G02B19/00 ,  G02B5/04

CPC classification number: G02B5/0221 ,  G02B5/0231 ,  G02B5/0278 ,  G02B5/045

Abstract: An optical device includes a diffusion film including a diffusion film and a condensing film. The diffusion film includes a diffusion layer that exhibits adhesive property and that has a light-incident surface and a light-emitting surface. The light-emitting surface is disposed oppositely of the light-incident surface and having a first microstructure. The condensing film includes a light-transmissive base layer that is adhered onto the light-emitting surface, and a prism layer provided on the light-transmissive base layer opposite to the diffusion film.

公开(公告)号：US20250060525A1

公开(公告)日：2025-02-20

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.

公开(公告)号：US20190235150A1

公开(公告)日：2019-08-01

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.