Image acquisition using time-multiplexed chromatic illumination
US11017500B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 8, 2018 |
| Grant date | May 25, 2021 |
| Priority date | — |
| Expiry date | Jul 28, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2209/044
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An imaging system includes an image sensor having an array of sensor pixels, a multi-chromatic illuminator adapted to independently generate a plurality of illumination colors each having a different finite spectral range, and a controller coupled to the image sensor and to the multi-chromatic illuminator. The controller includes logic to time-multiplexing the multi-chromatic illuminator between the illumination colors. Each of the illumination colors independently illuminates for at least a corresponding one of non-overlapping durations of illumination of the illumination colors. The controller includes further logic to acquire chromatic sub-images with the image sensor and combine the chromatic sub-images into a composite color image. Each of the chromatic sub-images is acquired during a different one of the non-overlapping durations of illumination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.