Title:
OPTICAL EYEPIECE SYSTEM WITH LARGE ANGLE OF VIEW AND HEAD-MOUNTED DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/141380
Kind Code:
A1
Abstract:
An optical eyepiece system with a large angle of view and a head-mounted display device. The optical eyepiece system comprises a first lens set (D1), a second lens set (D2) and a third lens set (D3) which are coaxially and sequentially arranged in a direction of an optical axis from a human eye observation side to a micro display (IMG) side, wherein the first lens set (D1) has a positive optical focal length, the second lens set (D2) has a negative optical focal length and the third lens set (D3) has a positive optical focal length; the first lens set (D1) consists of two optical lenses, that is, a first lens (L1) close to the human eye side and a second lens (L2) away from the human eye side; the first lens set (D1) comprises at least two Fresnel optical surfaces (2, 3); the first lens (L1) comprises at least one Fresnel optical surface; the second lens set (D2) comprises a third lens (L3) and a fourth lens (L4) which are adjacent to the first lens set (D1) and are sequentially arranged along an optical axis; the third lens (L3) and the fourth lens (L4) each are negative lenses; the third lens set (D3) consists of one optical lens; the third lens set (D3) comprises a fifth lens (L5); the fifth lens (L5) is a positive lens; and the optical eyepiece system has the advantages of large angle of view, high image quality, low distortion, small field curvature and small size.
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Inventors:
CAO HONGPENG (CN)
GUO JIANFEI (CN)
PENG HUAJUN (CN)
GUO JIANFEI (CN)
PENG HUAJUN (CN)
Application Number:
PCT/CN2020/142065
Publication Date:
July 07, 2022
Filing Date:
December 31, 2020
Export Citation:
Assignee:
SHENZHEN NADE OPTICAL CO LTD (CN)
International Classes:
G02B27/01; G02B3/08; G02B25/00
Foreign References:
| CN105068250A | 2015-11-18 | |||
| CN106405817A | 2017-02-15 | |||
| CN101806956A | 2010-08-18 | |||
| CN109828368A | 2019-05-31 | |||
| CN108474935A | 2018-08-31 | |||
| CN104820282A | 2015-08-05 | |||
| CN101609208A | 2009-12-23 | |||
| JP2003322711A | 2003-11-14 | |||
| CN112630975A | 2021-04-09 | |||
| CN213934404U | 2021-08-10 |
Attorney, Agent or Firm:
SHENZHEN DUOZHIHUI NEW INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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