Multi-path reduction for optical time-of-flight
US9285894B1 · kind B1 · utility
4Cited by
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20Claims
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Key dates
| Filing date | May 24, 2013 |
| Grant date | Mar 15, 2016 |
| Priority date | — |
| Expiry date | Jan 13, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/894
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Described herein are systems and devices for mitigating multi-path interference in optical time-of-flight systems. An input surface is configured with a pattern comprising predominately low albedo material and a plurality of decimated high albedo features. The low albedo material is configured to minimize reflectance of light emitted by an emitter. The high albedo material is configured to reflect more of the light than the low albedo material. The low and high albedo materials, or an additional material, may be used to provide a high albedo material in visible light wavelengths, configured for use as a projection surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.