Milan Momcilo Popovich,Jonathan David Waldern,Alastair John Grant,Kimberly Sun Lokovic
申请号：
US16577536
公开号：
US20200089319A1
申请日:
2019.09.20
申请国别(地区):
US
年份:
2020
代理人:
摘要：
There is provided an object tracker comprising: a first waveguide； a source of illumination light； a detector optically coupled to said waveguide； and at least one grating lamina formed within said waveguide. Illumination light propagating along a first optical path from said source to an object in relative motion to the object tracker. Image light reflected from at least one surface of an object is deflected by said grating lamina into a second optical path towards said detector.
