JP2005121752A5

JP2005121752A5 -

Info

Publication number: JP2005121752A5
Application number: JP2003354372A
Authority: JP
Filing date: 2003-10-14
Publication date: 2006-12-07
Anticipated expiration: 2023-10-14

Claims

A lens control device that controls movement of the second lens unit to correct image plane movement when the first lens unit for zooming is moved,
Created for a given focus distance, a storage means for storing data indicating the position of the position of said first lens unit and the second lens unit,
And control means for controlling the movement of the second lens unit on the basis of the data on the basis of generating the first information for controlling the movement of said second lens unit, said first information,
Detecting means for detecting second information corresponding to the distance to the in- focus object;
The control means limits a range of the first information to be generated based on the second information .

The first information, the lens control apparatus according to claim 1, characterized in that the locus information indicating a position of the second lens unit with respect to the first lens unit.

The control means generates the first information using a focus signal representing a focus state of the optical system obtained from a photoelectric conversion signal of an optical image formed by an optical system including the first and second lens units. The lens control device according to claim 1, wherein:

It said control means, based on said data and said second information to generate the first information, based on the first information, which is formed by an optical system including the first and second lens units Performing a regeneration process for generating new first information using a focus signal representing a focus state of the optical system obtained from a photoelectric conversion signal of an optical image;
4. The lens control device according to claim 1, wherein a range of the first information generated in the regeneration process is limited based on the second information . 5.

In the regeneration process, the control means sets the movement condition of the second lens unit as the reference so that the second lens unit moves toward a position indicating a state where the focus signal is most focused. Changing the moving condition when moving based on the first information,
The lens control device according to claim 4, wherein a movement range of the second lens unit in the regeneration process is limited based on the second information .

The lens control according to claim 5, wherein the control unit changes the movement condition so that a movement range of the second lens unit in the regeneration process is limited based on the second information. apparatus.

An optical apparatus comprising: an optical system including the first and second lens units; and the lens control device according to any one of claims 1 to 6.

The optical apparatus according to claim 7, further comprising an imaging unit that photoelectrically converts an optical image formed by the optical system.

A lens control method for controlling movement of the second lens unit in order to correct image plane movement when moving the first lens unit for zooming,
Created for a given focus distance, and storing the data indicating the position of said second lens unit of the first lens unit in the storage means,
A control step for controlling the movement of the second lens unit on the basis of the data on the basis of generating the first information for controlling the movement of said second lens unit, said first information,
Detecting second information corresponding to the distance to the in- focus object,
In the control step, a range of the first information to be generated is limited based on the second information .

The first information, the lens control method according to claim 9, characterized in that the locus information indicating a position of the second lens unit with respect to the first lens unit.

In the control step, the first information is generated using a focus signal representing a focus state of the optical system obtained from a photoelectric conversion signal of an optical image formed by an optical system including the first and second lens units. The lens control method according to claim 9 or 10, wherein:

In the control step, based on said data and said second information to generate the first information, based on the first information, which is formed by an optical system including the first and second lens units Performing a regeneration process for generating new first information using a focus signal representing a focus state of the optical system obtained from a photoelectric conversion signal of an optical image;
The lens control method according to any one of claims 9 to 11, wherein a range of the first information generated in the regeneration process is limited based on the second information .

In the regeneration process, the first information is based on the movement condition of the second lens unit as the reference so that the second lens unit moves toward the position where the focus signal indicates the most focused state. Change the movement conditions when moving based on
The lens control method according to claim 12, wherein a movement range of the second lens unit in the regeneration process is limited based on the second information .

The lens control method according to claim 13, wherein in the regeneration process, the movement condition is changed so that a movement range of the second lens unit is limited based on the second information .