Title:
OPTICAL SYSTEM AND AUGMENTED REALITY APPARATUS
Document Type and Number:
WIPO Patent Application WO/2021/243777
Kind Code:
A1
Abstract:
Disclosed are an optical system, an augmented reality apparatus, a display assembly and a related apparatus. The optical system sequentially comprises, in a light transmission direction, a display unit (10), a first lens (20), a second lens (30), a third lens (40) and a fourth lens (50) in a light transmission direction, wherein the first lens (20), the second lens (30), the third lens (40) and the fourth lens (50) are all spherical lenses, and the refractive indexes thereof are all greater than 1.52; and the first lens (20), the second lens (30) and the fourth lens (50) have a positive focal power, and the third lens (40) has a negative focal power. The display assembly and the related apparatus are intended to solve the problems of an augmented reality apparatus in the prior art being large in terms of size and high in cost, since an optical system therein needs to use aspherical lenses and the amount of lenses is relative large .
Inventors:
CHEN PENGBO (CN)
LIU DEAN (CN)
LU GONGTAO (CN)
LIU DEAN (CN)
LU GONGTAO (CN)
Application Number:
PCT/CN2020/099073
Publication Date:
December 09, 2021
Filing Date:
June 30, 2020
Export Citation:
Assignee:
GOERTEK INC (CN)
International Classes:
G02B25/00; G02B27/01
Foreign References:
| CN105807419A | 2016-07-27 | |||
| CN109283668A | 2019-01-29 | |||
| CN110879471A | 2020-03-13 | |||
| CN111175948A | 2020-05-19 | |||
| CN101614863A | 2009-12-30 | |||
| US20170045746A1 | 2017-02-16 |
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