Visual simulator projection system
US4239355A · kind A · utility
1Cited by
1References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 5, 1979 |
| Grant date | Dec 16, 1980 |
| Priority date | — |
| Expiry date | Feb 5, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09B9/32
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Disclosed is a mechanical translation linkage and lamp support apparatus for maintaining the projection light source inside a gimballed transparency displaced from the geometric center of the transparency and in a fixed spatial relation with the center of the transparency as the transparency rotates about any of its three mutually perpendicular axes. The translation apparatus employs only a mechanical linkage to ground and reacts to rotation of the support gimbal about either the X or Y axis to maintain the projection light source at the required position regardless of the attitude of the gimbal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.