Multi-beam light scanning optical system and image forming...

Details Multi-beam light scanning optical system and image forming... Multi-beam light scanning optical system and image forming...

2005-08-16

2005-08-16

Phan, James (Department: 2872)

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

C359S216100, C347S241000, C347S243000

Reexamination Certificate

active

06930812

ABSTRACT:
A multi-beam light scanning optical system includes n (n≧2) light source means having m (m≧2) light emitting points; beam synthesizing means for synthesizing n×m light beams emitted by the light source means; deflecting means for deflecting n×m light beams from the beam synthesizing means; an imaging optical system for imaging the n×m light beams from the deflecting means on a surface to be scanned, wherein the surface to be scanned is scanned in a main scan direction with n×m light beams by a deflection scanning operation of the deflecting means; an aperture stop provided between the beam synthesizing means and the deflecting means, wherein principal rays of the n×m light beams are intersected at a position of the aperture stop, and the light beams which are adjacent to each other in a sub-scan direction on the surface to be scanned are the beams emitted from different ones of the light source means.

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