Method and means for calibration of photographic media using pre-exposed miniature images
US5563717A · kind A · utility
55Cited by
15References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 3, 1995 |
| Grant date | Oct 8, 1996 |
| Priority date | — |
| Expiry date | Feb 3, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/6055
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and associated apparatus for calibrating a photographic media requiring only a minimal area of the media by producing a pattern of exposure patches utilizing the steps of forming an exposure area on a portion of unexposed photographic media as a plurality of abutted test patches wherein the width of all the test patches is substantially constant and the width is less than 100 .mu.m. Each test patch is then exposed at a substantially constant log illumination increment over the previous test patch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.