Array based patterned illumination projector
US10139217B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 16, 2016 |
| Grant date | Nov 27, 2018 |
| Priority date | — |
| Expiry date | May 7, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light emitter is provided to emit, into an environment of interest, a plurality of different patterns of light during respective periods of time. Each of the different patterns of light varies according to angle in a first direction such the location of a light detector disposed in the environment can be determined based on illumination from the light emitter that is detected by the light detector over time. The light emitter includes an astigmatic optical element and a die on which are disposed multiple sets of one or more light emitters, each set corresponding to a respective pattern of illumination emitted from the light emitter. Such a configuration of the light emitter can provide means for producing the different patterns of illumination in an energy-efficient, low-cost, and/or size-constrained manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.