Optical assembly and fingerprint imaging system
US10509941B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2015 |
| Grant date | Dec 17, 2019 |
| Priority date | — |
| Expiry date | Aug 7, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/1318
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An optical fingerprint imaging system (200) and an optical assembly (300, 400, 500, 600, 700) are provided. The optical fingerprint imaging system (200) includes: a sensor (203, 302, 402, 502, 602, 702) and a light source (202, 301, 401, 501, 601, 701); wherein the sensor (203, 302, 402, 502, 602, 702) comprises a substrate (2031, 3021, 4021, 5021, 6021, 7021) and a photosensitive layer (2032, 3022, 4022, 5022, 6022, 7022), the substrate (2031, 3021, 4021, 5021, 6021, 7021) has a first surface and a second surface which is opposite to and lower than the first surface, and the photosensitive layer (2032, 3022, 4022, 5022, 6022, 7022) is in contact with the first surface of the substrate (2031, 3021, 4021, 5021, 6021, 7021); and wherein the light source (202, 301, 401, 501, 601, 701) is disposed at a position lower than the first surface and higher than the second surface, and light emitted from the light source (202, 301, 401, 501, 601, 701) is adapted to be guided by the substrate (2031, 3021, 4021, 5021, 6021, 7021) to the first surface of the substrate (2031, 3021, 4021, 5021, 6021, 7021). Accordingly, an optical fingerprint imaging system (200) with a reduced thickness, and a si…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.