Lens position control device

Details Lens position control device Lens position control device

1989-05-31

1991-04-09

Arnold, Bruce Y.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

354402, 358227, G02B 1500

Patent

active

050059564

ABSTRACT:
A position control device for a lens system having a variator and a compensator the latter of which also serves as the focusing lens, includes apparatus for detecting the positions of the variator and compensator, circuitry for detecting the focus state, and a processor for controlling movement of the compensator in accordance with at least the outputs of the position detecting apparatus and the focus detecting circuitry, wherein the second lens group is moved in a predetermined direction such that the image is forcibly slightly blurred.

REFERENCES:
patent: 4697891 (1987-10-01), Kawai
patent: 4749268 (1988-06-01), Moskovich et al.

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