Linear light source for a film scanner
US5565958A · kind A · utility
10Cited by
1References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 13, 1995 |
| Grant date | Oct 15, 1996 |
| Priority date | — |
| Expiry date | Apr 13, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B27/542
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A linear light source includes: a lamp for producing a beam of light; a cylindrical integrating cavity having an entry port for introducing the beam of light into the cylindrical integrating cavity and a linear slot parallel to the cylindrical axis of the integrating cavity for emitting a line of diffuse light that is uniform over an angular range; and an optical element aligned with the slot for reducing the angular divergence of the light exiting from the slot.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.