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1. (WO2018157713) INFORMATION DISPLAY DEVICE AND INFORMATION DISPLAY METHOD

Pub. No.:    WO/2018/157713    International Application No.:    PCT/CN2018/075630
Publication Date: Sat Sep 08 01:59:59 CEST 2018 International Filing Date: Thu Feb 08 00:59:59 CET 2018
IPC: G02B 27/01
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
华为技术有限公司
Inventors: LIN, Tao
林涛
ZHOU, Pengcheng
周鹏程
LI, Yan
李燕
Title: INFORMATION DISPLAY DEVICE AND INFORMATION DISPLAY METHOD
Abstract:
Provided are an information display device and an information display method, which are used to realize a three-dimensional display image of binocular parallax and focus information at the same time. The information display device (100) comprises: a spatial light modulator (101) for emitting a holographic three-dimensional light field toward a first grating (102), the holographic three-dimensional light field corresponding to at least two focal planes; the first grating (102) which is used to deflect the holographic three-dimensional light field emitted by the spatial light modulator (101) so that the holographic three-dimensional light field propagates in a first direction into an incoming optical waveguide (103); and the optical waveguide (103) which is used to receive the holographic three-dimensional light field introduced by the first grating (102), and the holographic three-dimensional light field is propagated in the optical waveguide (103). The second grating (102) is used to deflect the holographic three-dimensional light field propagating in the optical waveguide (103) so that the holographic three-dimensional light field is transmitted out of the optical waveguide (103) in a second direction and the user is allowed to see a holographic three-dimensional image (105) corresponding to the holographic three-dimensional light field after the user's eyes receiving the holographic three-dimensional light field transmitted in the second direction.