Title:
OPTICAL ASSEMBLY, MANUFACTURING METHOD THEREFOR, AND VIRTUAL REALITY DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/226653
Kind Code:
A1
Abstract:
An optical assembly and a virtual reality device, which relate to the technical field of display. The optical assembly (20) comprises a first Fresnel lens (21) and a light blocking unit (22). The first Fresnel lens (21) has multiple vertex angles (2111). The light blocking unit (22) overlaps with at least some of the multiple vertex angles (2111) in a direction parallel to an optical axis (L1) of the first Fresnel lens (21). In this way, the amount of light emitted from the ineffective surface of the first Fresnel lens can be reduced, stray light emitted from the first Fresnel lens can be reduced, and the imaging quality of the optical assembly is improved.
Inventors:
BAI JIARONG (CN)
HUANG HAITAO (CN)
DONG RUIJUN (CN)
HUANG HAITAO (CN)
DONG RUIJUN (CN)
Application Number:
PCT/CN2023/089903
Publication Date:
November 30, 2023
Filing Date:
April 21, 2023
Export Citation:
Assignee:
BOE TECHNOLOGY GROUP CO LTD (CN)
BEIJING BOE TECHNOLOGY DEV CO LTD (CN)
BEIJING BOE TECHNOLOGY DEV CO LTD (CN)
International Classes:
G02B3/08; G02B27/01
Foreign References:
| CN112578550A | 2021-03-30 | |||
| CN114280708A | 2022-04-05 | |||
| CN114859450A | 2022-08-05 | |||
| CN115963642A | 2023-04-14 | |||
| DE102004041233A1 | 2006-03-23 | |||
| JP2016176981A | 2016-10-06 | |||
| JPH08190149A | 1996-07-23 | |||
| US20180372925A1 | 2018-12-27 |
Attorney, Agent or Firm:
BEIJING SAN GAO YONG XIN INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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