Optical scanning device, and apparatus provided with such a devi

Details Optical scanning device, and apparatus provided with such a devi Optical scanning device, and apparatus provided with such a devi

1997-02-06

1998-08-04

Allen, Stephone B.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250236, 318640, H01J 314

Patent

active

057897433

ABSTRACT:
An optical scanning device is described, which is provided with a scanning element having a reflecting measuring reference face (31), and a position detection system (80) which supplies, inter alia, a measuring signal (S.sub.z) for the position of the scanning element in a direction perpendicular to the reference face. By implementing the scanning element in a very thin form and by correcting said measuring signal (S) by means of the polygon bending signal (S.sub.b) supplied by the position detection system, a very rapid and accurate scanning can be realized.

REFERENCES:
patent: 3706484 (1972-12-01), Doi et al.
patent: 4829175 (1989-05-01), Goto et al.
patent: 4841135 (1989-06-01), Goto et al.
patent: 5171984 (1992-12-01), Van Rosmalen
patent: 5245182 (1993-09-01), van Rosmalen et al.
"A Compact Optical Tape Recording System" G.E. Van Rosmalen, J.A.H. Kahlman, P.L.M. Put and C.M.J. Van Uijen, SPIE vol. 233U, Optical Data Storage 1994, pp. 8-14.

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