Illumination apparatus and frame to which the illumination apparatus is attached
US5866994A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 25, 1997 |
| Grant date | Feb 2, 1999 |
| Priority date | — |
| Expiry date | Nov 25, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B47/165
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An illumination apparatus for illuminating paintings at least a part of which is painted by a particular paint that emits or reflects light upon reception of ultraviolet ray, has a first illumination lamp constituted of an ultraviolet lamp and a second illumination lamp constituted of incandescent lamps. The ultraviolet lamp and incandescent lamps are controlled by a control circuit to be repetitively turned on and off as time elapses in accordance with a control sequence selected by an observer. While the incandescent lamps are turned on, the ultraviolet lamp is turned off to make the painting viewed as, e.g., a daytime landscape without showing, e.g., a nighttime landscape, and while the incandescent lamps are turned on, the ultraviolet lamp is turned on to make the same painting viewed as the nighttime landscape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.