Optical scanning apparatus and image forming apparatus

Details Optical scanning apparatus and image forming apparatus Optical scanning apparatus and image forming apparatus

2007-05-15

2007-05-15

Phan, James (Department: 2872)

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

C359S212100, C359S216100, C347S232000, C347S243000

Reexamination Certificate

active

11423017

ABSTRACT:
A light source which is a surface emitting laser including a plurality of apertures that correspond to light emitting regions arranged in a two-dimensional array and limit the regions, and a scanning optical system satisfies conditions of Dm·|βm|<ωm and Ds·|βs|<ωs, where Dm is a width of each of the apertures in a main scanning direction, Ds is a width of the each aperture in a sub-scanning direction, βm is a magnification of both of a coupling optical system and the scanning optical system in the main scanning direction, βs is a magnification of both of the coupling optical system and the scanning optical system in the sub-scanning direction, ωm is a size of an optical spot in the main scanning direction formed on a scan target surface, and ωs is the size of the optical spot in the sub-scanning direction formed on the scan target surface.

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