Image sensor comprising an array of interference filters
US11442206B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2019 |
| Grant date | Sep 13, 2022 |
| Priority date | — |
| Expiry date | Oct 16, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/201
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A pixelated filter intended to rest on a support and including, in a stacking direction: first filter pixels each including a first interference filter covered with a first dielectric block; and second filter pixels each including a second dielectric block, having a thickness greater than or equal to the thickness of the first interference filter, covered with a second interference filter, having a thickness smaller than or equal to the thickness of the first dielectric block, wherein, for at least one of the second filter pixels, the second dielectric block of the second filter pixel is interposed between the first interference filters of two first filter pixels and the second interference filter of the second filter pixel is interposed between the first dielectric blocks of the first two filter pixels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.