Laser diode automatic power control circuit with means of protec

Details Laser diode automatic power control circuit with means of protec Laser diode automatic power control circuit with means of protec

1992-11-04

1994-01-04

Scott, Jr., Leon

Coherent light generators

Particular component circuitry

Optical pumping

372 34, 372 29, 372 26, 372 31, H01S 300

Patent

active

052766977

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.

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patent: 4890288 (1989-12-01), Inuyama et al.
patent: 5019769 (1991-05-01), Levinson
patent: 5119391 (1992-06-01), Maeda et al.

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