Combined visible and infrared image sensor incorporating selective infrared optical filter
US10609309B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 21, 2018 |
| Grant date | Mar 31, 2020 |
| Priority date | — |
| Expiry date | Nov 16, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/8063
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A pixel array comprise a green pixel comprising a first green optical filter and a first clear filter, a red pixel comprising a red optical filter and a first special filter, a blue pixel comprising a blue optical filter and a second special filter, and an IR pixel comprising an IR optical filter and one of a second green optical filter and a second clear filter, where the first special filter suppresses a transmission of IR at a stopband centered at 850 nm at a first IR minimum transmission, and the second special filter suppresses a transmission of IR at the stopband centered at 850 nm at a second IR minimum transmission, and where the first minimum IR transmission is different from the second minimum IR transmission.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.