Artificial light source utilizing a holographic optical element to control radiant light
US4704666A · kind A · utility
5Cited by
12References
4Claims
0Family size
Inventor
Key dates
| Filing date | Aug 15, 1986 |
| Grant date | Nov 3, 1987 |
| Priority date | — |
| Expiry date | Aug 15, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01K1/32
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Light sources having a holographic optical element incorporated in the envelope surrounding the radiation source provide efficient lighting of selected task area. Multilayer holographic optical elements may be employed in combination with known sources of white light such as incandescent filaments to form improved light bulbs, flourescent tubes and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.