Title:
OPTICAL EYEPIECE SYSTEM AND HEAD-MOUNTED DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/141134
Kind Code:
A1
Abstract:
An optical eyepiece system and a head-mounted display device. The optical eyepiece system comprises at least one Fresnel lens, wherein the Fresnel lens contains a Fresnel surface which is provided with a shading component thereon; the shading component comprises a transparent substrate (101), light-transmitting portions (12) for transmitting light to effective optical parts on the Fresnel surface, and light extinction members (11) for performing extinction on non-effective optical parts on the Fresnel surface; the light extinction members (11) and the light-transmitting portions (12) are alternately distributed on a surface of the transparent substrate (101); and the effective optical parts are optical parts through which light involved in high-quality imaging passes, and the non-effective optical parts are optical parts through which stray light passes. The system can selectively perform light extinction on a non-effective optical part on a Fresnel surface and transmit light to an effective optical part on the Fresnel surface, such that the imaging quality of the Fresnel surface is prevented from being affected by the non-effective optical part, an image effect of a Fresnel lens is improved, defects brought about by the Fresnel lens in an optical system are effectively avoided, and the user experience is greatly improved.
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Inventors:
GUO JIANFEI (CN)
CAO HONGPENG (CN)
PENG HUAJUN (CN)
CAO HONGPENG (CN)
PENG HUAJUN (CN)
Application Number:
PCT/CN2020/141142
Publication Date:
July 07, 2022
Filing Date:
December 30, 2020
Export Citation:
Assignee:
SHENZHEN NADE OPTICAL CO LTD (CN)
International Classes:
G02B27/01; G02B3/08; G02B25/00
Domestic Patent References:
| WO1997001115A1 | 1997-01-09 |
Foreign References:
| CN106405817A | 2017-02-15 | |||
| EP3418779A1 | 2018-12-26 | |||
| DE102004041233A1 | 2006-03-23 | |||
| CN111077722A | 2020-04-28 | |||
| CN112578550A | 2021-03-30 | |||
| CN214011628U | 2021-08-20 |
Attorney, Agent or Firm:
SHENZHEN DUOZHIHUI NEW INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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