Fingerprint identification system using a pliable optical prism
US4120585A · kind A · utility
91Cited by
4References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 19, 1976 |
| Grant date | Oct 17, 1978 |
| Priority date | — |
| Expiry date | Nov 19, 1996 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/1172
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A pliable optical prism for use in an optical imaging system such as a fingerprint reader where the prism is physically contacted and the nature of the contact determines the efficiency of the device. The pliable prism deforms under applied pressure to partially mirror the topographic configuration of the source of applied pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.