Apparatus and method for enhancement of image viewing by modulated illumination of a transparency
US4908876A · kind A · utility
62Cited by
7References
10Claims
0Family size
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Key dates
| Filing date | Mar 16, 1988 |
| Grant date | Mar 13, 1990 |
| Priority date | — |
| Expiry date | Mar 16, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B27/727
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The human-eye viewing of an image on a transparency is enhanced by adaptively modulating illumination of the transparency with an unsharp, complementary representation of the image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.