Varifocal lens device

Details Varifocal lens device Varifocal lens device

1988-04-20

1989-11-21

Arnold, Bruce Y.

354408, G02B 1500

Patent

active

048817996

ABSTRACT:
Compensation of a deviation produced in the image forming position of a varifocal lens in consequence of magnification is attained by transforming a compensation amount into a relative amount of movement through arithmetic operation and driving the focusing lens group of the varifocal lens until the actual amount of movement conforms to the value obtained by the transformation.

REFERENCES:
patent: 3972056 (1976-07-01), Tsujimoto et al.
patent: 4161756 (1979-07-01), Thomas
patent: 4705380 (1987-11-01), Yamamoto et al.

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