Photographic image exposing apparatus
US5790238A · kind A · utility
3Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 27, 1997 |
| Grant date | Aug 4, 1998 |
| Priority date | — |
| Expiry date | Jan 27, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B27/735
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A photographic image exposing apparatus includes a white light source and a filtering device provided between the white light source and a photographic paper. The filtering device has color filters corresponding to respective light spectrums and is operable to interrupt a light beam traveling from the white light source to the photographic paper to separately allow the corresponding light spectrums to pass therethrough. A light amount adjuster is operable to change respective interrupting times of the color filters with respect to a predetermined exposing range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.