Holographic waveguide optical tracker
US10423222B2 · kind B2 · utility
67Cited by
484References
21Claims
0Family size
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Key dates
| Filing date | Sep 25, 2015 |
| Grant date | Sep 24, 2019 |
| Priority date | — |
| Expiry date | Sep 25, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2201/307
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.