Light scanning device

Details Light scanning device Light scanning device

1989-11-02

1992-02-11

Arnold, Bruce Y.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359668, 359711, G02B 2610, G02B 306, G02B 1308

Patent

active

050879839

ABSTRACT:
A light deflector has a focusing optical system for focusing a light beam deflected by a light deflector onto an object surface. The focusing optical system comprises, in order from the light deflector, a single anamorphic lens, a single spherical lens having a positive refractive index, and a single lens having a toric surface, the lenses having refracting surfaces having respective radii of curvature indicated respectively by r:1, r:2, r:3, r:4, r:5, r:6 in order from the light deflector. The light deflector meets the following condition:

REFERENCES:
patent: 4277128 (1981-07-01), Kawamura
patent: 4674825 (1987-06-01), Tateoka et al.
patent: 4715699 (1987-12-01), Morimoto
patent: 4756584 (1988-07-01), Takanashi
Fleischer et al., "Laser-Optical System of The IBM 3800 Printer," IBM Journal of Research and Development, vol. 21, No. 5, Sep., 1977.

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