Milan Momcilo Popovich,Jonathan David Waldern,Alastair John Grant
申请号：
US16277390
公开号：
US20190179153A1
申请日:
2019.02.15
申请国别(地区):
US
年份:
2019
代理人:
摘要：
An eye tracker having a first waveguide for propagating illumination light along a first waveguide path and propagating image light reflected from at least one surface of an eye along a second waveguide path. At least one grating lamina for deflecting the illumination light out of the first waveguide path towards the eye and deflecting the image light into the second waveguide path towards a detector is disposed adjacent an optical surface of the waveguide.
