Optical imaging device
US5859420A · kind A · utility
81Cited by
4References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 4, 1996 |
| Grant date | Jan 12, 1999 |
| Priority date | — |
| Expiry date | Dec 4, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2149
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An optical imaging device such as a fingerprint imager or a CCD camera, has a reduced size due to the provision of multiple lenses which are associated with respective CCDs. The optical path between the lenses and the CCDs is shortened. In a fingerprint version of the device, a staircase-shaped prism is advantageously used in combination with the multiple lens and multiple CCD arrangement. An alignment means is provided to facilitate the reconstructing the image out of partial images created by separate CCDs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.