Optical Scanner

Details Optical Scanner Optical Scanner

1994-09-27

1996-12-03

Dzierzynski, Paul M.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359197, 359212, 359217, 347259, G02B 2608

Patent

active

055813925

ABSTRACT:
A scanning image forming optical system has a conjugate lateral magnification smaller than one with respect to a cross scan-corresponding direction. The optical scanner has an opening member arranged between a light source device and a deflecting-reflecting face of an optical deflector. The opening member interrupts a peripheral portion of a laser beam while the laser beam passes through an opening portion. A position of the opening member is determined such that .DELTA./L.gtoreq.0.32. Where L is a distance between a deflected light beam deflected by the optical deflector and an image formed, and .DELTA. is a distance between the image forming point and a conjugate image of the opening member. With this arrangement, it is possible to effectively reduce an influence of diffraction caused by the opening member, such as an aperture, and reduce a change in diameter of a light spot with respect to a defocusing amount.

REFERENCES:
patent: 3537777 (1970-11-01), Flynn
patent: 5161047 (1992-11-01), Tomita et al.
patent: 5208694 (1993-05-01), Tomita

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-790131