Lens control apparatus

Details Lens control apparatus Lens control apparatus

2007-03-06

2007-03-06

Mahoney, Christopher (Department: 2851)

Photography

Having variable focal length of camera objective

Having focus operation

C396S085000, C396S133000, C348S351000

Reexamination Certificate

active

09966178

ABSTRACT:
In a lens control apparatus for detecting a magnification lens position and a focus compensation lens and controlling a focus compensation position in zooming such that a focused position of the focus compensation lens with respect to a discrete magnification lens position is controlled with reference to a stored table in accordance with an object distance, when the magnification lens position and the focus compensation lens position are not stored in the table, the focus compensation lens position is estimated from the table data and the current lens positions.

REFERENCES:
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patent: 5140357 (1992-08-01), Suda et al.
patent: 5144491 (1992-09-01), Ushiro et al.
patent: 5267044 (1993-11-01), Nozaki et al.
patent: 5890020 (1999-03-01), Hirasawa
patent: 5956528 (1999-09-01), Tanaka

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