Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1989-10-16
1992-05-05
Arnold, Bruce Y.
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359208, 359662, G02B 2608, G02B 900
Patent
active
051113252
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 combined beam. The combined beam is scanned by a rotating polygon onto a receiving medium. The f-.theta. is adapted to operate with optics for shaping the beam in a scan direction prior to the polygon and a cylindrical element after the f-.theta. lens to image the beam in a cross-scan direction onto the receiving medium. In order to provide an f-.theta. lens which is color corrected, the lens includes means for correcting in a scan direction for lateral color aberrations in each of the beams, and means for correcting in a cross-scan direction for axial color aberrations in each of the beams.
REFERENCES:
patent: 3701588 (1972-10-01), Trebitz et al.
patent: 4277128 (1981-07-01), Kawamura
patent: 4396254 (1983-08-01), Shibuya
patent: 4401362 (1983-08-01), Maeda
patent: 4715697 (1987-12-01), John et al.
patent: 4755030 (1988-07-01), Araki et al.
patent: 4756583 (1988-07-01), Morimoto
patent: 4765727 (1988-08-01), Mercado
patent: 4796962 (1989-01-01), DeJager et al.
patent: 4821113 (1989-04-01), McQuade et al.
patent: 4847492 (1989-07-01), Houki
patent: 4848885 (1989-07-01), Clark
patent: 4863250 (1989-09-01), Ishizuka
patent: 4880299 (1989-11-01), Hamada
patent: 4892395 (1990-01-01), Suzuki et al.
patent: 4917483 (1990-04-01), Nakao
patent: 4921320 (1990-05-01), DeJager et al.
Arnold Bruce Y.
Eastman Kodak Company
Nguyen Thong
Schaper Donald D.
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