Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1993-10-04
1996-04-02
Phan, James
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359208, 359214, 359216, G02B 2608
Patent
active
055046134
ABSTRACT:
In an optical scanner, a light beam from a light source device is formed by a linear image forming optical system as a linear image extending in a main scan-corresponding direction. The light beam is then deflected by an optical deflector at an equal angular velocity and is converged by an image forming reflecting mirror as a light spot on a scanned face. An optical scanning operation is performed at an equal speed by using this light spot. An error in an image forming position in a cross scan-corresponding direction caused by an error in arrangement of an optical system is corrected by displacing and adjusting an arranging position of the linear image forming optical system in the cross scan-corresponding direction. In the optical scanner using the image forming reflecting mirror, a curve ill a scanning line caused by the error in arrangement of the optical system can be effectively corrected and reduced.
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Atsuumi Hiromichi
Itabashi Akihisa
Phan James
Ricoh & Company, Ltd.
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