Laser diode automatic power control circuit with means of protection of the laser diode
US5276697A · kind A · utility
16Cited by
10References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 4, 1992 |
| Grant date | Jan 4, 1994 |
| Priority date | — |
| Expiry date | Nov 4, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/06825
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A laser imaging system includes a laser diode and an automatic power control circuit with a laser diode protection circuit. The protection circuit includes a shunt circuit for shunting power around the laser diode in response to one or more of the following conditions: laser light power over a predetermined maximum value, temperature of the laser diode is below or above a predetermined temperature range, the electrical power supply is below or above predetermined voltage values during power up and power down.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.