Optical scanning device

Details Optical scanning device Optical scanning device

1997-06-10

2000-10-31

Grant, II, Jerome

Facsimile and static presentation processing

Facsimile

Picture signal generator

358480, H04N 140

Patent

active

061411183

ABSTRACT:
An optical scanning device corrects a scanning line curvature and prevents image quality degradation, while spatially separating a plurality of light beams at oblique angles of incidence despite its compact magnifying optical scanning device construction. The optical scanning device directs, to the deflection surface of an optical deflector via a cylindrical lens, the plurality of light beams emitted by a light source having a plurality of light emission sections, guides, via an f.theta. lens system to a surface being scanned, the plurality of light beams deflected by the optical deflector so that the plurality of light beams scan the surface being scanned. The f.theta. lens system has a plurality of rotationally asymmetrical lenses, the optical axes of which are substantially parallel with the light beams incident on the respective lenses, and each of the generatrices that connect the vertices of a radius curvature on a lens surface in the sub scanning direction of the rotationally asymmetrical lenses is curved in a sub scan direction.

REFERENCES:
patent: 3955048 (1976-05-01), Tanabe
patent: 4707085 (1987-11-01), Takanashi et al.
patent: 4991030 (1991-02-01), Sato et al.
patent: 5025268 (1991-06-01), Arimoto et al.
patent: 5054866 (1991-10-01), Tomita et al.
patent: 5245462 (1993-09-01), Kanai et al.
patent: 5436724 (1995-07-01), Ishizuka
patent: 5488502 (1996-01-01), Saito
patent: 5566006 (1996-10-01), Yoshinaga et al.
patent: 5646767 (1997-07-01), Lima et al.
patent: 5701190 (1997-12-01), Mochizuki et al.
patent: 5771062 (1998-06-01), Nomura et al.
patent: 5982539 (1999-11-01), Shirasaki

Affiliated with

Also associated with

Rating

Optical scanning device 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 device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical scanning device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2059198