Stereoscopic real image scanning reproduction method and apparatus
US4158487A · kind A · utility
Inventor
Key dates
| Filing date | Feb 17, 1978 |
| Grant date | Jun 19, 1979 |
| Priority date | — |
| Expiry date | Feb 17, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B37/00
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
My invention relates to photographing scenes with standard motion picture photographic equipment where multiple views of a subject are photographed while the subject rests on a moving turntable and the stationary camera has its optical axis pointed at the turntable rotation axis or where the subject is stationary and the camera effectively moves in an arc about an axis located between the camera and scene. The surface of the processed film (or other appropriate media) is arrayed in a vertical plane and constrained to move horizontally around a portion of a circle. Film images are scanned by a light source and radially projected in a direction away from a vertical rotation axis. Concentric with the vertical axis are the semi-specular screen of radius R and the scanning projector circle of radius close to R/3. The screen reflects projected light in a horizontal plane and scatters projected light in a vertical plane. The film is rapidly scanned by the projector and the images are projected sequentially while sweeping horizontally over the screen when the projector is between the vertical axis and the screen. At any instant, all projected rays reflected from the screen return to a vert…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.