Dimmer for fiber optic systems
US5207494A · kind A · utility
7Cited by
3References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 4, 1991 |
| Grant date | May 4, 1993 |
| Priority date | — |
| Expiry date | Feb 4, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21V11/08
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A dimmer for variably adjusting light transmitted through it to a fiber optic bundle from a light source whose own intensity is not to be adjusted. A body has an axial passage for light to pass through. A plurality of opaque vanes is symetrically arranged in the passage. They meet at an apex located on the axis. Each vane has an axis of rotation in a plane normal to the axis and are rotatable to vary the amount of light which is transmitted. These vanes are coordinated for simultaneous and identical rotation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.