Temperature control for arc lamps
US6616304B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 3, 2001 |
| Grant date | Sep 9, 2003 |
| Priority date | — |
| Expiry date | Oct 3, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/82
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A temperature control system for a source of electromagnetic radiation, such as an arc lamp, in a collecting and condensing system including a first reflector having a first focal point and a first optical axis, and a second reflector having a second focal point and a second optical axis. The source may be located proximate to the first focal point of the first reflector to produce rays of radiation that reflect from the first reflector toward the second reflector and substantially converge at the second focal point. A sensor, such as a voltage or a temperature sensor, may be placed near the source, and produces an output which may be substantially proportional to an attribute of the source. A comparator compares the output to a predetermined value and produces a difference between the output and the predetermined value. A fan placed proximate to the source has an air flow to cool the source which may be substantially proportional to the difference between the output and the predetermined value if the output is greater than the predetermined value. Otherwise, if the output is less than the predetermined value, the air flow may be substantially zero. The temperature control system m…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.