Title:
HEAD-MOUNTED DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/033284
Kind Code:
A1
Abstract:
A head-mounted display device (100). The head-mounted display device (100) comprises a display screen (10) and a lens group (20); from an image side of the lens group (20) to an object side of the lens group (20), the lens group (20) sequentially comprises a first lens (22) having a positive diopter, a second lens (24) having a positive diopter, a third lens (26) having a positive diopter, and a fourth lens (28) having a negative diopter; an object side surface S2 of the first lens (22) is a Fresnel surface, an image side surface S3 of the second lens (24) is a convex surface, an image side surface S5 of the third lens (26) is a convex surface, and an image side surface S7 of the fourth lens (28) is a concave surface; the display screen (10) is positioned at the object side of the lens group (20).
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Inventors:
JIN YUNFENG (CN)
Application Number:
PCT/CN2017/097565
Publication Date:
February 21, 2019
Filing Date:
August 15, 2017
Export Citation:
Assignee:
SHENZHEN ROYOLE TECHNOLOGIES CO LTD (CN)
International Classes:
G02B27/01; G02B25/00
Foreign References:
| CN103765292A | 2014-04-30 | |||
| CN104536129A | 2015-04-22 | |||
| CN105759424A | 2016-07-13 | |||
| CN105652445A | 2016-06-08 | |||
| US20070018124A1 | 2007-01-25 |
Attorney, Agent or Firm:
TSINGYIHUA INTELLECTUAL PROPERTY LLC (CN)
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