Optical scanning device and mirror correction system for use in

Details Optical scanning device and mirror correction system for use in Optical scanning device and mirror correction system for use in

1989-07-13

1991-05-07

Arnold, Bruce Y.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

350 68, 358208, G02B 2610

Patent

active

050131087

ABSTRACT:
An optical scanning device comprises a rotatable polygon mirror (40), or another deflection system, which is arranged between an objective system (30) and the surface (61) to be scanned. In order that the image point (21) moves along a straight line across the surface (61), a correction system is provided which comprises two unidirectionally curved mirrors (51 and 52), the first (51) of which has a hyperbola-cylindrical shape and the second (52) has a parabola-cylindrical shape.

REFERENCES:
patent: 3365724 (1968-01-01), Brown et al.
patent: 3881801 (1975-05-01), Bechtold
patent: 4234240 (1980-11-01), Moore et al.
patent: 4629283 (1986-12-01), Plast
patent: 4766308 (1988-08-01), Karlsson
patent: 4836666 (1989-06-01), Meinel et al.
Applied Optics, vol. 17, No. 2, 15-1-78, pp. 203-210, by K. Klose.

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