Optical scanning apparatus

Details Optical scanning apparatus Optical scanning apparatus

1990-02-27

1991-03-12

Arnold, Bruce Y.

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

350 68, 250235, G02B 2610

Patent

active

049987909

ABSTRACT:
An optical scanning apparatus has a semiconductor laser which produces a divergent beam of light. A collimator lens makes the beam of light parallel, a cylindrical lens shapes the beam, and a polygonal deflector deflects the beam through a scanning lens and onto a rotating drum containing an exposure plane. The amount of light reflected back into the semiconductor laser is reduced by forming a slit either inside of the collimator lens or inside of a housing of the cylindrical lens.

REFERENCES:
patent: 4294506 (1981-10-01), Hattori
patent: 4523801 (1985-06-01), Baba et al.

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