Zoom lens control apparatus
AssigneeCanon Kabushiki Kaisha
InventorHiroto Okawara
Life of this patent
Estimating the term…
Abstract
This invention discloses a zoom lens control apparatus which has a first lens unit for executing magnification operation, and a second lens unit for correcting variations in image plane along with magnification operation of the first lens unit and serving as a focusing function, and drives the second lens unit on the basis of a focus adjustment signal, including a first setting circuit which sets a first moving range for the second lens unit along with movement of the first lens unit, and a second setting circuit which sets a second moving range different from the moving range for the second lens unit along with movement of the first lens unit.
Claims9
A zoom lens control apparatus which has a first lens unit for executing magnification operation, and a second lens unit for correcting variations in image plane along with magnification operation of the first lens unit and serving as a focusing function, and drives the second lens unit on the basis of a focus adjustment signal, comprising:
- a first setting circuit which sets a first moving range for the second lens unit along with movement of the first lens unit;
- and
- a second setting circuit which sets a second moving range different from the moving range for the second lens unit along with movement of the first lens unit.
A control program for a zoom lens control apparatus which has a first lens unit for executing magnification operation, and a second lens unit for correcting variations in image plane along with magnification operation of the first lens unit and serving as a focusing function, and drives the second lens unit on the basis of a focus adjustment signal, comprising:
- a first setting program which sets a first moving range for the second lens unit along with movement of the first lens unit;
- and
- a second setting program which sets a second moving range different from the moving range for the second lens unit along with movement of the first lens unit.
Dependencies are inferred from the claim text.