Light emitting element driving circuit and light emitting device

Details Light emitting element driving circuit and light emitting device Light emitting element driving circuit and light emitting device

1997-03-03

2000-02-29

Bovernick, Rodney

Coherent light generators

Particular component circuitry

Optical pumping

H01S 300

Patent

active

060318554

ABSTRACT:
A light emitting element driving circuit which drives a light emitting element including the following. A drive transistor is coupled to a power supply voltage and is provided on a side of an anode of the light emitting element. The drive transistor receives an input signal and supplies the light emitting element with a pulse current and a bias current. A cathode of the light emitting element is connected to a lower potential than the power supply voltage.

REFERENCES:
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Patent Abstracts of Japan, vol. 008, No. 029 (E-226), Feb. 7, 1984 & JP 58 190085 A (Fujitsu KK), Nov. 5, 1983.
Patent Abstracts of Japan, vol. 008, 139 (E-253), Jun. 28, 1984 & JP 59 050586 A (Nihon Kougaku Kogyo KK), Mar. 23, 1984.
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Patent Abstracts of Japan, vol.. 013, No. 114, (e-730), Mar. 20, 1989 & JP 63 285990 A (Nippon Telegraph & Telephone Corp.), Nov. 22, 1988.
Price, John P., A Laser Diode Current Driver with Photodiode Sense Amplifier for Optical Disk Drive, Proceedings of the Bipolar Circuits and Technology Meeting, Minneapolis, Sep. 9-10, 1991, No. 9, Sep. 9, 1991, pp. 241-244.

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