Method and apparatus for optical temperature control
US5641419A · kind A · utility
Inventor
Key dates
| Filing date | Jun 17, 1994 |
| Grant date | Jun 24, 1997 |
| Priority date | — |
| Expiry date | Jun 17, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J5/602
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The radiation generated by at least one radiation source is controlled so as to generate a constant radiation intensity, thereby to cause the object to be heated, and the radiation intensity from the object at a first wavelength is sensed until it is equal to the present radiation intensity generated by the at least one radiation source, whereby the temperature of the object has a predetermined value. From that time on, the development of the actual temperature of the object is controlled accurately according to a predetermined program merely by sensing the radiation intensity from the object at a second wavelength larger than the first wavelength, and using the measuring signal representative of the sensed radiation intensity to continuously control the radiation intensity generated by the at least one radiation source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.