Laser beam scanning device with plural sources and source-sensit

Details Laser beam scanning device with plural sources and source-sensit Laser beam scanning device with plural sources and source-sensit

1989-09-19

1990-10-09

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

346108, H01J 314

Patent

active

049623125

ABSTRACT:
A laser beam scanning device including a plurality of laser beam sources for emitting laser beams having properties different from each other, respectively such that each of the laser beams is modulated by an image signal, a deflection member for simultaneously deflecting the laser beams emitted by the laser beam sources, a light detecting member for detecting one of the laser beams such that modulation of the laser beams emitted by the laser beam sources is started in response to a signal outputted from the light detecting member and an optical member which is disposed on an optical path from the deflection member to the light detecting member and optically selects only the one of the laser beams so as to irradiate the one of the laser beams onto the light detecting member.

REFERENCES:
patent: 4393387 (1983-09-01), Kitamura
patent: 4404571 (1983-09-01), Kitamura
patent: 4424442 (1984-01-01), Kitamura
patent: 4539478 (1985-09-01), Sano

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