Laser beam emitting device with selective laser beam power outpu

Details Laser beam emitting device with selective laser beam power outpu Laser beam emitting device with selective laser beam power outpu

1993-08-17

1995-04-18

Davie, James W.

Coherent light generators

Particular beam control device

Optical output stabilization

372 38, H01S 310

Patent

active

054084830

ABSTRACT:
A laser beam emitting device is provided for use, for example, in a laser beam printer. The device includes a single laser diode for emitting a laser beam having an output power level that is dependent on a driving current supplied to the laser diode. Two laser diode drivers are connected to the single laser diode and can be individually energized to drive the single laser diode to emit a laser beam that can have different output power levels. A selector is connected to the drivers for producing one of a plurality of selecting signals corresponding to the different output power levels, respectively, to select and energize one of the drivers.

REFERENCES:
patent: 4727382 (1988-02-01), Negishi et al.
patent: 4748633 (1988-05-01), Negishi
patent: 4761659 (1988-08-01), Negishi
patent: 4802179 (1989-01-01), Negishi
patent: 4879459 (1989-11-01), Negishi
patent: 5119360 (1992-06-01), Minakuchi
patent: 5153871 (1992-10-01), Minakuchi
patent: 5255276 (1993-10-01), Tabuchi et al.

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