Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1997-02-20
1998-09-08
Phan, James
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359206, 359207, 359208, 359216, G02B 2608
Patent
active
058053239
ABSTRACT:
An optical scanning apparatus comprises a first image formation optical system for shaping a diameter of a light beam emitted from a light source, deflection means for deflecting an incident light beam at a constant angular velocity, a second image formation optical system for forming the image with the light beam deflected by the deflection means on a surface to be scanned, and a third image formation optical system for forming the image with the light beam deflected by the deflection means on the surface to be scanned, wherein a locational relationship between the first image formation optical system and the deflection means is set so that the light beam can be incident on the deflection means in such a manner that the center of a flux of light of the light beam from the light source forms a predetermined angle relative to an axis perpendicular to a rotating axis of the deflection means, and the third image formation optical system is disposed in such a manner that the distortion of the scanning line formed on the third image formation optical system due to the incidence of the light beam on the deflection means at the predetermined angle can correct the curvature of field in the direction of the auxiliary scan in a width of the scan on the surface to be scanned or the curvature of the conjugating point relative to the reflecting surfaces of the deflection means.
REFERENCES:
patent: 4984858 (1991-01-01), Kuroda
patent: 5408095 (1995-04-01), Atsuumi et al.
patent: 5572353 (1996-11-01), Iizuka et al.
Fuji 'Xerox Co., Ltd.
Phan James
LandOfFree
Optical scanning apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical scanning apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical scanning apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1288129