Optical scanning system having a surface inclination correction

Details Optical scanning system having a surface inclination correction Optical scanning system having a surface inclination correction

1987-10-22

1989-06-06

Corbin, John K.

350 68, G02B 2610

Patent

active

048366307

ABSTRACT:
An optical scanning surface includes a light source, a first imaging forming optical system for forming a line image from a light flux emitted from the light source, a rotating polyogon mirror for deflecting the light from the light source through the first image forming optical system over a predetermined angle, a second image forming optical system for receiving the thus deflected light flux and then forming an image on a scanning surface. The second image forming optical system includes a first single spherical meniscus lens having a negative refracting power, a second single spherical meniscus lens having a positive refracting power, and a third single lens having a cylindrical surface facing the second lens and a toric surface at its opposite side, as arranged in the order mentioned between the polygon mirror and the scanning surface.

REFERENCES:
patent: 4401362 (1983-08-01), Maeda
patent: 4674825 (1987-06-01), Tateoka et al.
patent: 4707085 (1987-11-01), Takanashi et al.
patent: 4712884 (1987-12-01), Sakuma et al.
patent: 4720632 (1988-01-01), Kaheko
patent: 4756584 (1988-07-01), Takanashi

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