Milan Momcilo Popovich,Jonathan David Waldern,Alastair John Grant,Kimberly Sun Lokovic
申请号：
US15513288
公开号：
US10423222B2
申请日:
2015.09.25
申请国别(地区):
US
年份:
2019
代理人:
摘要：
There is provided an object tracker having: a first waveguide； a source of illumination light； a detector optically coupled to the waveguide； and at least one grating lamina formed within the waveguide. Illumination light propagating along a first optical path from the 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 the grating lamina into a second optical path towards the detector.
