Scanner optics with no cross scan field curvature

Details Scanner optics with no cross scan field curvature Scanner optics with no cross scan field curvature

1982-10-08

1985-04-23

Corbin, John K.

G02B 2717

Patent

active

045126259

ABSTRACT:
A lens system is described which allows a scan spot in a flying spot scanning system on the image surface to be focused in the cross scan plane and at the same time correcting field curvature distortion. The use of a first lens element having negative power in the scan direction and a second lens element having positive power in the cross scan plane on the front surface and positive power in scan plane on the rear surface allows a light from a laser to be reflected from a rotating polygon to be reflected from a concave cylindrical mirror onto a xerographic or other photosensitive surface.

REFERENCES:
patent: 4108532 (1978-08-01), Minoura
patent: 4179183 (1979-12-01), Tateoka et al.
patent: 4247160 (1981-01-01), Brueggeman
Fisli, "High Efficiency Symmetrical Scanning Optics", Optics and Laser Technology, vol. 14, No. 2, 4/1982, pp. 98-100.

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