Title:
EYEPIECE OPTICAL SYSTEM AND HEAD-MOUNTED DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/236176
Kind Code:
A1
Abstract:
An eyepiece optical system and a head-mounted display device. The eyepiece optical system comprises a first lens group (A1), a second lens group (A2), a third lens group (A3) and a fourth lens group (A4), which are coaxially and sequentially arranged along an optical axis from a human eye observation side to a micro image display side, and satisfy a certain focal length relationship, wherein the first lens group (A1) has an effective focal length of a positive value, and is composed of a first lens (L1) close to a human eye side and a second lens (L2) away from the human eye side; the second lens group (A2) has an effective focal length of a negative value, and is composed of a third lens (L3) and a fourth lens (L4); the third lens group (A3) has an effective focal length of a positive value, and is composed of a fifth lens (L5); and the fourth lens group (A4) is composed of a sixth lens (L6) and a seventh lens (L7). The first lens (L1), the second lens (L2) and the fifth lens (L5) are positive lenses, the third lens (L3) and the fourth lens (L4) are negative lenses, and materials of the lenses satisfy a certain relationship. The eyepiece optical system has advantages such as a large field of view, high resolution, and low distortion, and is applicable to a head-mounted display and similar devices.
Inventors:
PENG HUAJUN (CN)
CAO HONGPENG (CN)
GUO JIANFEI (CN)
CAO HONGPENG (CN)
GUO JIANFEI (CN)
Application Number:
PCT/CN2022/098056
Publication Date:
December 14, 2023
Filing Date:
June 10, 2022
Export Citation:
Assignee:
SHENZHEN NED OPTICS CO LTD (CN)
International Classes:
G02B25/00; G02B27/01
Foreign References:
| CN112630978A | 2021-04-09 | |||
| CN112630976A | 2021-04-09 | |||
| CN109358425A | 2019-02-19 | |||
| CN109375364A | 2019-02-22 | |||
| CN201345000Y | 2009-11-11 | |||
| JP2006301508A | 2006-11-02 |
Attorney, Agent or Firm:
SHENZHEN DUOZHIHUI NEW INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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