Selectable mechanical and electronic pattern generating aperture module
US5113332A · kind A · utility
71Cited by
7References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 24, 1989 |
| Grant date | May 12, 1992 |
| Priority date | — |
| Expiry date | May 24, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21W2131/406
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lighting system aperture mechanism formed by a movable carriage including a frame with openings for mechanically formed or electronic pattern apertures. The frame is moved to position a selected opening around a beam of light and the pattern aperture disposed within the selected opening may be rotated as desired to produce special effect patterns in the beam of light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.