Semiconductor laser driving circuit and semiconductor laser...

Details Semiconductor laser driving circuit and semiconductor laser... Semiconductor laser driving circuit and semiconductor laser...

2005-07-19

2005-07-19

Harvey, Minsun Oh (Department: 2828)

Coherent light generators

Particular component circuitry

For driving or controlling laser

C372S038030, C372S038040, C372S038070

Reexamination Certificate

active

06920163

ABSTRACT:
A semiconductor laser driving circuit drives a plurality of semiconductor laser devices having different objective operating voltages, and has a power source for generating power voltages for the semiconductor laser devices, a power voltage changeover means for changeover from one of the power voltages to another, a current amplification section for supplying a driving current to the semiconductor laser device with the power voltage so that the semiconductor laser device comes to have its respective objective operating voltage.

REFERENCES:
patent: 4232678 (1980-11-01), Skovajsa
Elantec Inc., “EL6290C—Product Brief—Laser Diode Driver with Waveform Generator”, May 12, 2000.
ATMEL, “5-channel Laser Driver with RF Oscillator and 2 Outputs, T0800”, 4503A-DVD-01/02.

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