Title:
MEASURING DEVICE AND MEASURING METHOD FOR LENS-TO-SCREEN DISTANCE OF VR DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/134203
Kind Code:
A1
Abstract:
A measuring device (100) for the lens-to-screen distance of a VR display device (105). The measuring device (100) comprises: a light source (101), a beam-splitting lens (102), a converging lens (103), and a detection module (104). A light transmitted by the light source (101) is shone to the beam-splitting lens (102). The light is primarily reflected by the beam-splitting lens (102) then introduced into the VR display device (105). The light is secondarily reflected by the VR display device (105) then reaches the beam-splitting lens (102). The light is transmitted by the beam-splitting lens (102) and reaches the converging lens (103). The light is converged by the converging lens (103) to the detection module (104). The lens-to-screen distance of the VR display device (105) is calculated on the basis of the detection result of the detection module (104), thus allowing efficient and accurate measurement of the lens-to-screen distance of the VR display device (105).
Inventors:
WANG CHAO (CN)
JIANG FAN (CN)
LIN XIAOLONG (CN)
ZHAO XIAOLIN (CN)
HONG SONGTAO (CN)
ZHANG SHUANGLEI (CN)
ZHAO JIE (CN)
JIANG FAN (CN)
LIN XIAOLONG (CN)
ZHAO XIAOLIN (CN)
HONG SONGTAO (CN)
ZHANG SHUANGLEI (CN)
ZHAO JIE (CN)
Application Number:
PCT/CN2018/074370
Publication Date:
July 11, 2019
Filing Date:
January 27, 2018
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
G01S17/08
Foreign References:
| CN206450829U | 2017-08-29 | |||
| CN107065190A | 2017-08-18 | |||
| CN106383354A | 2017-02-08 | |||
| CN106933359A | 2017-07-07 | |||
| US20150346816A1 | 2015-12-03 |
Download PDF:
Previous Patent: NEGATIVE-PRESSURE CONTRACTION ELASTOMER DRIVEN FLEXIBLE KNEE-JOINT EXOSKELETON
Next Patent: COMPLEX PALLET
Next Patent: COMPLEX PALLET