Circuit for controlling the output power of an uncooled laser or light emitting diode
US5907569A · kind A · utility
29Cited by
3References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 28, 1997 |
| Grant date | May 25, 1999 |
| Priority date | — |
| Expiry date | May 28, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A selected positive coefficient resistor is connected in parallel across a laser, Light Emitting Diode (LED) or amplifier LED (ALED) to adjust the bias current, respectively, to the laser, LED or ALED as a function of temperature so as to maintain a more regulated optical power output therefrom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.