Lighting fixture for theater, television and architectural applications
US5544029A · kind A · utility
12Cited by
22References
19Claims
0Family size
Inventor
Key dates
| Filing date | Nov 12, 1993 |
| Grant date | Aug 6, 1996 |
| Priority date | — |
| Expiry date | Nov 12, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21W2131/406
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An improved lighting fixture for projecting a high-intensity beam of light that is imaged at a distant location, with reduced manufacturing cost and with reduced weight, but greater efficiency. Various structures are disclosed for eliminating infrared light from the projected beam, whereby the fixture's lens can advantageously be formed of a suitable plastic material and be configured as an aspheric fresnel lens or a stepped aspheric lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.