Optical scanning system

Details Optical scanning system Optical scanning system

1989-07-07

1991-04-09

Arnold, Bruce Y.

350 68, 350434, 350479, G02B 2610

Patent

active

050059289

ABSTRACT:
An optical scanning system includes a light source, a coupling lens, a polygon mirror, an f.theta. lens, and a barrel toroidal lens. The barrel toroidal lens includes a barrel toroidal surface in which the radius of curvature thereof measured in the sub-scanning direction decreases with an increased distance from the optical axis of the barrel toroidal lens in a direction parallel to the main scanning direction.

REFERENCES:
patent: 4643516 (1987-02-01), Ogura
patent: 4712884 (1987-12-01), Sakuma et al.
patent: 4934772 (1990-06-01), Sakuma et al.

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