High dynamic range and depth of field depth camera
US9294754B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 1, 2013 |
| Grant date | Mar 22, 2016 |
| Priority date | — |
| Expiry date | Apr 25, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/894
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In order to maximize the dynamic range and depth of field for a depth camera used in a time of flight system, the light source is modulated at a plurality of different frequencies, a plurality of different peak optical powers, a plurality of integration subperiods, a plurality of lens foci, aperture and zoom settings during each camera frame time. The different sets of settings effectively create subrange volumes of interest within a larger aggregate volume of interest, each having their own frequency, peak optical power, lens aperture, lens zoom and lens focus products consistent with the distance, object reflectivity, object motion, field of view, etc. requirements of various ranging applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.