Title:
EYEPIECE AND HEAD MOUNTED DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/080325
Kind Code:
A1
Abstract:
An eyepiece and a head mounted display device, the eyepiece comprising: a plus lens (11) and a minus lens (12) which are coaxially provided in sequence; a light incident surface (Si1) of the plus lens (11) being a planar Fresnel surface, and a light emergent surface (Se1) being a convex surface; a light incident surface (Si2) of the minus lens (12) being a concave surface, and a light emergent surface (Se2) being a convex surface; the light to be observed falls on the light incident surface (Si2) of the minus lens (12), and is refracted by the minus lens (12) to the light incident surface (Si1) of the plus lens (11), and then enters the human eyes after being refracted by the plus lens (11), achieving an ultrathin eyepiece optical system, and facilitating the miniaturization and the light weight of the head mounted display device.
Inventors:
YANG CHUN (CN)
Application Number:
PCT/CN2017/117040
Publication Date:
May 02, 2019
Filing Date:
December 18, 2017
Export Citation:
Assignee:
GOERTEK TECH CO LTD (CN)
International Classes:
G02B25/00; G02B27/01
Domestic Patent References:
| WO2016115562A1 | 2016-07-21 |
Foreign References:
| CN106526852A | 2017-03-22 | |||
| CN204964882U | 2016-01-13 | |||
| CN106019596A | 2016-10-12 | |||
| CN106501943A | 2017-03-15 | |||
| CN206209198U | 2017-05-31 |
Other References:
See also references of EP 3702824A4
Attorney, Agent or Firm:
TEKYRS INTELLECTUAL PROPERTY INC. (CN)
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