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Chirped polarization volume grating for wide FOV and high‐efficiency waveguide‐based AR displays
Author(s) -
Yin Kun,
Lin HungYuan,
Wu ShinTson
Publication year - 2020
Publication title -
journal of the society for information display
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 52
eISSN - 1938-3657
pISSN - 1071-0922
DOI - 10.1002/jsid.893
Subject(s) - grating , polarization (electrochemistry) , optics , bandwidth (computing) , materials science , field of view , optoelectronics , physics , computer science , telecommunications , chemistry
We demonstrate a reflective chirped polarization volume grating as a strong contender for wide field‐of‐view augmented reality display systems. By introducing gradient pitch along the beam propagation direction, the angular bandwidth extends dramatically from 18° to 54° while keeping over 80% average efficiency and 95% peak efficiency.