Optical system for extended time of flight ranging
US9939530B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 14, 2015 |
| Grant date | Apr 10, 2018 |
| Priority date | — |
| Expiry date | Jun 6, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/4972
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A time of flight detector includes an electromagnetic radiation emitter configured to emit a beam of radiation. A first optical element receives the beam of radiation and generates a collimated beam of radiation. A second optical element defines a narrow imaging field of view sufficient to capture reflected electromagnetic radiation from the collimated beam. An electromagnetic radiation sensor then senses the captured reflected electromagnetic radiation from the collimated beam in the narrow imaging field of view. Further narrowing of the imaging field of view is accomplished by selective enabling a sub-array of photosensitive elements with the electromagnetic radiation sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.