Imaging systems with image pixels having adjustable spectral responses
US9338413B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 2013 |
| Grant date | May 10, 2016 |
| Priority date | — |
| Expiry date | Apr 29, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2209/043
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An imaging system may include an image sensor having an array of image pixels. Some image pixels in the array may be provided with spectral response adjustment structures. For example, a plurality of broadband pixels in the array may include spectral response adjustment structures. The spectral response adjustment structures may be configured to narrow the spectral response of the broadband pixels in high light conditions. For example, the spectral response of the broadband pixels may transition from clear to gray, from clear to green, or from yellow to green as the light level increases. The spectral response adjustment structures may, for example, be formed from photochromic materials or electrochromic elements. Processing circuitry in the imaging system may generate a color correction matrix for an image based at least partly on the state of the spectral response adjustment structures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.