Recording and reproduction of images
US4934824A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 6, 1989 |
| Grant date | Jun 19, 1990 |
| Priority date | — |
| Expiry date | Mar 6, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B35/26
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method of recording an image of an object onto cinematographic color film comprises forming a number of successive images of the object through a single lens system onto each frame of the film, the successive images being recorded in light of different characteristics, for example different colors. In a preferred embodiment, each frame of the film is exposed successively to light of two or three different colors. The film is projected using a conventional projector, and when viewed through spectacles consisting of two appropriate filters gives a stereoscopic effect. The method can be used to produce a film which can also be viewed without spectacles, and is found to give enhanced sharpness and color saturation. The invention also includes a moving film camera having a mechanism for interposing a number of filters in the optical path successively during exposure of each frame so that successive images are overlaid on each frame. In one embodiment a rotatable shutter member having a transparent portion consisting of a number of filters is provided. The shutter member may replace the rotating shutter of a conventional film camera. Several different forms of shutter member are descri…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.