Cooling liquid recirculation system for light source unit
US5147130A · kind A · utility
22Cited by
8References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 2, 1989 |
| Grant date | Sep 15, 1992 |
| Priority date | — |
| Expiry date | Nov 2, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a cooling liquid recirculation system, walls of transparent jacket tubes for cooling a mercury-vapor lamp, which jacket tubes are provided separately from the mercury-vapor in accordance with the prior art are formed in optical filters to thereby decrease the temperature of an object to be illuminated. A recirculation unit of cooling liquid for recirculation of the jacket tubes is connected through an elastic duct to a light source unit such as a mercury-vapor lamp. These components are movable for practical use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.