Laser beam optical scanning device

Details Laser beam optical scanning device Laser beam optical scanning device

1993-11-09

1995-12-19

Phan, James

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359216, 347260, 347261, G02B 2608, B41J 247

Patent

active

054773733

ABSTRACT:
A laser beam optical scanning device including a housing, a light source for emitting a unidirectional laser beam, polygonal mirror for deflection scanning a laser beam emitted from the light source within a single plane, and optical members for directing the deflected scanning laser beam on the surface of a photosensitive member through a beam emission aperture of the housing. A transparent member is provided at the beam emission aperture of the housing so as to satisfy the following equation: ##EQU1## where X:distance (mm) from transparent member to surface of photosensitive member,

REFERENCES:
patent: 5227811 (1993-07-01), Kohsaka
patent: 5299051 (1994-03-01), Hirano

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