Scanning optical device

Details Scanning optical device Scanning optical device

1997-01-31

1998-12-01

Phan, James

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359196, 359212, 359216, 359636, 347236, 347246, 250205, G02B 2608

Patent

active

058447075

ABSTRACT:
A scanning optical device that includes a laser source that emits a laser beam; a deflector for deflecting a laser beam to form a scanning beam spot on an image surface; a beam splitter, between the laser source and the deflector, and a sensor positioned in a predetermined position relative to the beam splitter. In particular, the beam splitter includes a reflective area in which the laser beam from the laser source is reflected and a transmitting area that is distinct from the reflective area through which the laser beam is transmitted. One of the reflected laser beam or transmitted laser beam is a main beam to be deflected by the deflector and the other is a monitor beam to be detected by the sensor.

REFERENCES:
patent: 4180822 (1979-12-01), Hudson et al.
patent: 5270736 (1993-12-01), Inoue et al.
patent: 5760944 (1998-06-01), Minakuchi et al.

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