Optical beam intensity control system
US4443696A · kind A · utility
Inventor
Key dates
| Filing date | Aug 28, 1981 |
| Grant date | Apr 17, 1984 |
| Priority date | — |
| Expiry date | Aug 28, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B26/02
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical beam intensity control system having a light controller which allows a beam of electromagnetic energy of varying intensity to pass therethrough. A beam splitter directs a portion of the output beam to a detector which provides a signal indicative of the intensity of this beam to a threshold control signal generator. The control signal generator compares the intensity signal with a preselected intensity range and provides a signal indicative of whether or not the intensity of the beam falls within the preselected intensity range. The light controller operates in accordance with the signal from the control signal generator in order to maintain the output beam of the variable beam of electromagnetic energy within the preselected intensity range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.