Light projector with integrated integrity sensor
US10667341B1 · kind B1 · utility
5Cited by
12References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2019 |
| Grant date | May 26, 2020 |
| Priority date | — |
| Expiry date | Aug 29, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/423
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical module includes a diffractive optical element (DOE) with a transparent conductive trace disposed over a surface of the DOE. An emitter is configured to direct a beam of optical radiation through the DOE. Control circuitry is coupled to measure a resistance of the transparent conductive trace and to control operation of the emitter responsively to the resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.