Optical scanning device, scanning optical system, scanning...

Details Optical scanning device, scanning optical system, scanning... Optical scanning device, scanning optical system, scanning...

2005-01-25

2005-01-25

Robinson, Mark A. (Department: 2872)

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

C359S217200, C347S263000

Reexamination Certificate

active

06847474

ABSTRACT:
A scanning imaging optical component is used in an optical scanning device which deflects a beam from a light source by a light deflector, condenses the deflected beam toward a surface to be scanned by a scanning imaging optical system, forms a beam spot on the surface to be scanned, and performs optical scanning of the surface to be scanned. The optical component forms at least a part of the scanning imaging optical system, and at least a part of a surface of the optical component other than an effective optical surface is made to be a roughened surface, and roughness thereof is such that: Rmax>0.5 (μm).

REFERENCES:
patent: 4863227 (1989-09-01), Takanashi
patent: 4930869 (1990-06-01), Miyagawa et al.
patent: 5903379 (1999-05-01), Kamikubo
patent: 6400488 (2002-06-01), Nagasaka et al.

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