1987-04-07
1989-07-25
Arnold, Bruce Y.
350433, 350434, G02B 2610, G02B 306
Patent
active
048506630
ABSTRACT:
A light scanning system uses a tilting angle error correcting system, applying a conjugate relation from geometrical optics. A light beam from a light source is converged to a linear image near a deflecting surface of a deflector by a first converging optical system. The deflected light beam from the deflecting surface is converged to a light spot on a scanning plane by a second converging optical system. The first converging optical system provides the light converging effect only in a plane perpendicular to the direction of scan and also has an overcorrected spherical aberration, so that the spherical aberration of the entire system can be favorably corrected, thereby making it possible to obtain a high converging performance for realizing high resolution.
REFERENCES:
patent: 3750189 (1973-07-01), Fleischer
patent: 4123135 (1978-10-01), Rabedeau
patent: 4674825 (1987-06-01), Tateoka et al.
Mirrors, Prisms and Lenses by James P. C. Southall, The Macmillan Company 1923, p. 178.
Kimura Yuichi
Yamamoto Yoshiharu
Arnold Bruce Y.
Kachmarik Ronald M.
Matsushita Electric - Industrial Co., Ltd.
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