Biometric sensor with diverging optical element
US10108841B2 · kind B2 · utility
6Cited by
18References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2016 |
| Grant date | Oct 23, 2018 |
| Priority date | — |
| Expiry date | Dec 6, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B3/0056
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical biometric sensor includes an array of light sensing elements, an array of diverging optical elements, and an array of apertures disposed between the array of light sensing elements and the array of diverging optical elements. Light incident on the diverging optical elements within a limited acceptance angle passes through the apertures and towards the light sensing elements and light incident on the diverging optical elements outside of the limited acceptance angle diverges away from the apertures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.