Optical scanning device and image forming apparatus having...

Details Optical scanning device and image forming apparatus having... Optical scanning device and image forming apparatus having...

2011-03-08

2011-03-08

Stultz, Jessica T (Department: 2873)

Optical: systems and elements

Lens

With support

C359S798000, C359S800000, C359S811000

Reexamination Certificate

active

07903354

ABSTRACT:
Provided is an optical scanning device that can consistently obtain a light beam having a desired beam spot diameter without allowing an aperture to block parallel ray to be admitted, and that can be manufactured at lower cost. The optical scanning device has a light source that emits laser light, a collimator lens that converts the laser light emitted from the light source into parallel ray, and a lens holder that holds the collimator lens and has an aperture portion for fairing the laser light, the aperture portion being formed integrally with the lens holder. The optical scanning device also may have a collimator lens having a lens surface with which an aperture portion for fairing the laser light is brought into close contact.

REFERENCES:
patent: 4918702 (1990-04-01), Kimura
patent: 5701191 (1997-12-01), Iwasaki
patent: 5805363 (1998-09-01), Okuda et al.
patent: 2004/0240205 (2004-12-01), Hayakawa et al.
patent: 2005/0169152 (2005-08-01), Miyake et al.
patent: 8-112940 (1996-05-01), None
patent: 2001-71553 (2001-03-01), None

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