Image converting and projecting method and apparatus for carrying out the same
US4264193A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 1979 |
| Grant date | Apr 28, 1981 |
| Priority date | — |
| Expiry date | Apr 18, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C7/00
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method of converting a color negative image into an inverted positive color image and an apparatus for carrying out the method. The image of the color negative film is decomposed into three images each in one of the three primary colors through associated color filters. The individual images thus produced are recorded in a light transmissive recording medium in inverted images, which are then illuminated by a light source disposed at a side in opposition to the negative film, whereby the inverted images are projected through the same optical system including the aforementioned color filters as the one used for the projection onto a screen as the inverted positive image. The recording medium is constituted by a light transmissive ceramic dielectric exhibiting a memory function. The inverted positive image may be projected at a magnified scale.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.