JP2012133218A5

JP2012133218A5 -

Info

Publication number: JP2012133218A5
Application number: JP2010286525A
Authority: JP
Filing date: 2010-12-22
Publication date: 2014-02-20
Anticipated expiration: 2030-12-22

Description

上記目的を達成するために、本発明の技術的特徴としては、変倍動作を行うためのズームレンズと、焦点調節を行うためのフォーカスレンズとの移動を、被写体距離ごとに記憶された前記ズームレンズの位置および前記フォーカスレンズの位置についての情報に基づいて制御する制御手段と、前記ズームレンズが所定の位置よりも望遠側にあるときに、第１の被写体距離より至近側の第２の被写体距離に対応する位置へ前記フォーカスレンズが移動するのを制限する第１のモードと、前記第２の被写体距離に対応する位置へ前記フォーカスレンズが移動するのを許可する第２のモードとを切り替える切替手段と、を有するレンズ駆動装置であって、前記切替手段は、前記第１のモードにおいて、前記フォーカスレンズが前記第１の被写体距離に対応する位置を含む所定領域に到達してから所定の条件を満たす場合に、前記第２のモードに切り替えることを特徴とする。 To achieve the above object, the technical features of the present invention, the zoom and the zoom lens to perform zooming operation, the movement of a focus lens for adjusting focus, which is stored for each object distance position and braking Gosuru control means based on information about the position of the focus lens of the lens, when the zoom lens is at the telephoto side than the predetermined position, the second of the near side than the first object distance a first mode to restrict the position corresponding to the object distance of the focus lens is moved, and a second mode in which the focus lens to a position corresponding to the second object distance to allow the movement of a lens driving apparatus for chromatic and switching means for switching, wherein the switching means, wherein in a first mode, pre-Symbol focus lens the first object distance If the corresponding position satisfies a predetermined condition after reaching a predetermined region including, and switches before Symbol second mode.

Claims

A zoom lens for performing zooming operation, the movement of a focus lens for adjusting focus, control on the basis of information about the location of position and the focus lens of the zoom lens which is stored for each object distance Control means to
A first mode for restricting movement of the focus lens to a position corresponding to a second object distance closer to the first object distance when the zoom lens is on the telephoto side than a predetermined position; Switching means for switching between a second mode in which the focus lens is allowed to move to a position corresponding to the second subject distance ,
Said switching means is in said first mode, when the previous SL predetermined condition is satisfied after reaching a predetermined region including the focus lens is a position corresponding to the first object distance, before Symbol second mode A lens driving device characterized by switching to

Wherein the predetermined condition, to claim 1 where before Symbol focus lens to reach the predetermined region again the predetermined region within a predetermined time after reaching the inside is equal to or is to be repeated a predetermined number of times The lens driving device described.

The lens driving device according to claim 2 , wherein at least one of the predetermined time and the predetermined number of times is changed according to a length of an accumulation time of the image sensor.

When the zoom lens is at the first position, the predetermined number of times is set to a first value, and when the zoom lens is at the second position on the wide-angle side from the first position, the predetermined number of times is The lens driving device according to claim 2, wherein the lens driving device is set to a second value larger than the first value.

Said switching means when said focus lens is on the near side than the position corresponding to a predetermined object distance, when the zoom lens is moved from the wide angle side to the telephoto side than the predetermined position, said predetermined condition The lens driving device according to claim 1, wherein the lens driving device is relaxed .

The predetermined condition is that the focus lens reaches the predetermined area again within a predetermined time after the focus lens reaches the predetermined area, and is repeated a predetermined number of times.
The lens driving device according to claim 5, wherein the method of relaxing the predetermined condition includes setting the predetermined number of times to a smaller value .

Characterized in that it has a display means for displaying said zoom lens to notify the setting state of the first mode and the second mode to the photographer when in the telephoto side than the predetermined position The lens driving device according to any one of claims 1 to 6.

The display means, after the zoom lens is changed the display to inform the photographer of the setting state of the first mode and the second mode when in the telephoto side than the predetermined position, a predetermined time 8. The lens driving device according to claim 7, wherein the display state is maintained.

A method for controlling a lens driving device, comprising:
A control step for controlling movement of the zoom lens for performing zooming operation and the focus lens for performing focus adjustment based on information about the position of the zoom lens and the position of the focus lens stored for each subject distance When,
A first mode for restricting movement of the focus lens to a position corresponding to a second object distance closer to the first object distance when the zoom lens is on the telephoto side than a predetermined position; A switching step of switching between a second mode in which the focus lens is allowed to move to a position corresponding to the second subject distance ,
In the switching step, the in the first mode, when the previous SL predetermined condition is satisfied after reaching a predetermined region including the focus lens is a position corresponding to the first object distance, before Symbol second mode A method for controlling a lens driving device, wherein

A zoom lens for zooming,
A focus lens for adjusting the focus,
When the zoom lens is at the telephoto side than the predetermined position, the focus lens is to move is limited to a position corresponding to a second object distance of the near side than the first object distance, the focusing lens is the when a predetermined condition is satisfied after reaching a predetermined region including a position corresponding to the first object distance, I switched to a range in which the movable range before Symbol focus lens including a position corresponding to the second object distance A lens system characterized by that.