F-.theta. lens

Details F-.theta. lens F-.theta. lens

1997-04-22

1998-11-10

Sugarman, Scott J.

Optical: systems and elements

Lens

High distortion lens

359206, G02B 300, G02B 2608

Patent

active

058352805

ABSTRACT:
An f-.theta. lens is disclosed which is particularly suitable for use with a color laser printer in which beams of different wavelengths are combined into a single light beam. The combined light beam is scanned by a rotating polygon onto a receiving medium. The f-.theta. is adapted to operate with 1.) beam shaping optics for shaping the beam in a scan direction prior to the polygon, and 2.) a cylindrical element located behind the f-.theta. lens, to image the light beam in a cross-scan direction onto the receiving medium. The f-.theta. lens includes a plurality of lens components. The lens components cooperate to

REFERENCES:
patent: 4396254 (1983-08-01), Shibuya
patent: 4728965 (1988-03-01), Kessler et al.
patent: 4821113 (1989-04-01), McQuade et al.
patent: 5018805 (1991-05-01), Kessler
patent: 5111325 (1992-05-01), DeJager
patent: 5200861 (1993-04-01), Moskovich
patent: 5475415 (1995-12-01), Noethen
patent: 5559637 (1996-09-01), Moskovich
Cineon Printer made by Eastman Kodak Company, "Deviation from Linearity with Compensated EFL", CBWooley, p. 250.

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