Title:
EYEPIECE OPTICAL SYSTEM WITH LARGE FIELD-OF-VIEW ANGLE, AND HEAD-MOUNTED DISPLAY APPARATUS
Document Type and Number:
WIPO Patent Application WO/2017/079985
Kind Code:
A1
Abstract:
An eyepiece optical system with a large field-of-view angle, and a head-mounted display apparatus. The eyepiece optical system with a large field-of-view angle comprises a first lens group (G1) and a second lens group (G2) which are arranged coaxially and successively along an optical axis from a human eye to an image source and meet a certain focal length relationship. The first lens group has a negative value of an effective focal length (f1) and is constituted by a first lens (L1) close to the human eye and a second lens (L2) away from the human eye, and the second lens group (G2) has a positive value of an effective focal length (f2) and is constituted by one or two lenses, wherein the first lens (L1) is in a double-convex shape, and the second lens (L2) is concave in the direction of the human eye close to an optical surface of the human eye and is in an aspheric face shape. At the same time, a distance (D12) between the first lens (L1) and the second lens (L2), a focal length relationship of lenses within the second lens group (G2) and the material properties of various lenses meet a certain relationship. The eyepiece optical system with a large field-of-view angle has the advantages of large aperture, large field-of-view, high resolution, low distortion, and small size, etc., and is suitable for a head-mounted display and similar apparatuses.
Inventors:
CAO HONGPENG (CN)
PENG HUAJUN (CN)
PENG HUAJUN (CN)
Application Number:
PCT/CN2015/094620
Publication Date:
May 18, 2017
Filing Date:
November 13, 2015
Export Citation:
Assignee:
SHENZHEN NED OPTICS CO LTD (CN)
International Classes:
G02B25/04; G02B25/00; G02B27/01
Foreign References:
| CN104965306A | 2015-10-07 | |||
| US20130258487A1 | 2013-10-03 | |||
| JPH11133316A | 1999-05-21 | |||
| CN101887166A | 2010-11-17 | |||
| CN104536129A | 2015-04-22 | |||
| CN104181689A | 2014-12-03 |
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