Scanning optical system

Details Scanning optical system Scanning optical system

1997-04-07

1999-05-11

Phan, James

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359216, 359226, G02B26/08

Patent

active

059033797

ABSTRACT:
A scanning optical comprises a light source, a rotating mirror for deflecting and scanning a light beam emitted form the light source, a scanning lens for converging the light beam deflected by the rotating mirror onto an object surface, a transparent cover plate obliquely disposed between the rotating mirror and the scanning lens, and a transparent compensation plate obliquely disposed between the cover plate and the object surface. The cover plate has no power and a normal of the cover plate is inclined at a predetermined angle with respect to a main scanning plane. The compensation plate has no power and a normal of the compensation plate is inclined at a predetermined angle with respect to the main scanning plane.

REFERENCES:
patent: 4796963 (1989-01-01), Yoshimura
patent: 4863227 (1989-09-01), Takanashi
patent: 5153608 (1992-10-01), Genovese
patent: 5251055 (1993-10-01), Koide

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