Premium
41.5: Head‐mounted Display Based on Surface Relief Grating for Augmented Reality
Author(s) -
Ding Wuwen,
Zheng Yu
Publication year - 2018
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1002/sdtp.12752
Subject(s) - optical head mounted display , grating , computer science , eyepiece , optics , exit pupil , pupil , planar , augmented reality , reflection (computer programming) , computer graphics (images) , head (geology) , surface (topology) , computer vision , virtual reality , artificial intelligence , physics , mathematics , lens (geology) , geology , programming language , geometry , geomorphology
A see‐through head‐mounted display (HMD) is demonstrated in the paper, which can present the user with information such as virtual symbols or images superimposed over real‐world image. To meet the human eyes' visual requirements under different situations, a large exit pupil of 2 to 5 times of the pupil size (about 2.4 mm) is required. To solve the problem, the HMD presented in the paper is a combination of micro‐display of LCoS, imaging eyepiece and an exit pupil expander based on planar waveguide with slanted surface relief grating. Both transmission and reflection gratings are applied in the HMD design. Two system schemes are presented which expand the light only along one direction and two orthogonal directions, respectively. The system configuration and principle of operation are described in the paper.