Semiconductor laser, light source device, lighting device,...

Details Semiconductor laser, light source device, lighting device,... Semiconductor laser, light source device, lighting device,...

2008-07-09

2010-10-12

Harvey, Minsun (Department: 2828)

Coherent light generators

Particular component circuitry

Controlling current or voltage to laser

C372S038020, C372S023000, C372S022000, C372S021000

Reexamination Certificate

active

07813393

ABSTRACT:
A light source device includes a semiconductor laser, and a drive circuit supplying the semiconductor laser with a pulsed drive current, and in the semiconductor laser, a laser emitting element and a free wheel diode are formed on the same substrate, and a cathode of the free wheel diode is connected to a current input terminal of the laser emitting element, and an anode of the free wheel diode is connected to a current output terminal of the laser emitting element.

REFERENCES:
patent: 2004/0160996 (2004-08-01), Giorgi et al.
patent: 2006/0220213 (2006-10-01), Kondou et al.
patent: 2007/0121685 (2007-05-01), Maekawa
patent: 2008/0102576 (2008-05-01), Suzuki et al.
patent: A-2006-106130 (2006-04-01), None

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