Time-of-flight camera with guided light
US8854426B2 · kind B2 · utility
24Cited by
186References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 7, 2011 |
| Grant date | Oct 7, 2014 |
| Priority date | — |
| Expiry date | Nov 7, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63F2300/6045
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A time-of-flight 3D camera and related method for illuminating a camera field of view and capturing return image light are disclosed herein. In one example, the time-of-flight 3D camera includes a light source that emits source light along an optical axis, and a collimator that receives and collimates the source light to create collimated light. A refractive diffuser is tuned to the camera field of view and receives and diffuses the collimated light to create refracted light having a varying intensity profile. The refractive diffuser guides the refracted light to illuminate the camera field of view to reduce wasted source light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.