Time-of-flight camera with guided light
US9056254B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 6, 2014 |
| Grant date | Jun 16, 2015 |
| Priority date | — |
| Expiry date | Oct 6, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63F2300/6045
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A gaming system comprising 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 configured to emit source light along an optical axis, and a collimator configured to receive and collimate the source light to create collimated light. A refractive diffuser is operable to be tuned to the camera field of view and configured to receive and diffuse the collimated light to create refracted light having a varying intensity profile. The refractive diffuser is further configured to guide the refracted light to illuminate only a portion of the camera field of view to reduce wasted source light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.