JP2013057751A5

JP2013057751A5 -

Info

Publication number: JP2013057751A5
Application number: JP2011195265A
Authority: JP
Filing date: 2011-09-07
Publication date: 2014-10-23
Anticipated expiration: 2031-09-07

Description

本発明の一実施形態のレンズユニットは、撮像装置本体に着脱可能なレンズユニットであって、変倍動作を行う変倍レンズと、該変倍レンズの変倍動作に伴う焦点面位置の変化を補正する補正レンズとを含む撮像光学系と、前記変倍レンズとメカ機構で接続され、該変倍レンズを移動するための操作を受け付ける変倍レンズ操作手段と、複数の被写体距離毎の、前記変倍レンズの位置に対応する前記補正レンズの合焦位置を示した第１の情報が予め記憶された第１の記憶手段と、前記レンズユニットが装着された撮像装置本体から、該撮像装置本体が検出した前記補正レンズの合焦位置についての第２の情報を受信する受信手段と、前記変倍レンズおよび前記補正レンズの移動を制御する制御手段とを有する。前記変倍レンズ操作手段の操作が行われた場合、前記制御手段は、前記受信手段が前記第２の情報を受信したときの前記変倍レンズの位置および前記第１の情報に基づいて、現在の前記変倍レンズの位置に対応する前記補正レンズの合焦位置を算出し、該合焦位置へ前記補正レンズを移動するよう制御する。
A lens unit according to an embodiment of the present invention is a lens unit that can be attached to and detached from an imaging apparatus main body, and includes a variable power lens that performs a variable power operation, and a change in focal plane position associated with the variable power operation of the variable power lens. an imaging optical system including a correction for correcting lens, which is connected with variable power lens and the mechanical mechanism, a zoom lens manipulation means for accepting an operation for moving the variable power lens, the number of each object distances double, From the first storage means in which first information indicating the in- focus position of the correction lens corresponding to the position of the zoom lens is stored in advance, and the imaging apparatus main body to which the lens unit is mounted, the imaging apparatus Receiving means for receiving second information about the in- focus position of the correction lens detected by the main body; and control means for controlling movement of the variable magnification lens and the correction lens. When the operation of the zoom lens operating unit is performed, the control unit is configured to perform a current operation based on the position of the zoom lens and the first information when the receiving unit receives the second information. The focus position of the correction lens corresponding to the position of the zoom lens is calculated, and control is performed to move the correction lens to the focus position.

Claims

A lens unit that can be attached to and detached from the imaging apparatus body,
An imaging optical system including a variable power lens that performs a variable power operation, and a correction lens that corrects a change in focal plane position associated with the variable power operation of the variable power lens;
Are connected by the variable power lens and the mechanical mechanism, a zoom lens manipulation means for accepting an operation for moving the variable power lens,
First storage means in which first information indicating the focus position of the correction lens corresponding to the position of the zoom lens for each of a plurality of subject distances is stored in advance;
Receiving means for receiving second information about the in- focus position of the correction lens detected by the imaging apparatus body from the imaging apparatus body to which the lens unit is mounted;
Control means for controlling the movement of the zoom lens and the correction lens,
When the operation of the zoom lens operating unit is performed, the control unit is configured to perform a current operation based on the position of the zoom lens and the first information when the receiving unit receives the second information. A lens unit that calculates a focus position of the correction lens corresponding to the position of the zoom lens and controls to move the correction lens to the focus position .

As a mode for controlling the position of the correction lens, a first mode and a second mode are provided,
In the first mode, the receiving unit receives the second information from the imaging device body, and in the second mode, the receiving unit moves the correction lens from the imaging device body. Receive information about speed
The lens unit according to claim 1.

The receiving means receives information indicating a mode for controlling the position of the correction lens from the imaging apparatus main body.
The lens unit according to claim 2.

In the case of the first mode, the control unit is configured to control the current zoom lens based on the position of the zoom lens and the first information when the reception unit receives the second information. The focus position of the correction lens corresponding to the position is calculated, and the correction lens is controlled to move to the focus position
The lens unit according to claim 2 or 3, wherein

In the case of the first mode, the control means determines a speed for moving the correction lens based on the calculated focus position of the correction lens.
The lens unit according to claim 4.

In the case of the second mode, the control unit determines a speed at which the correction lens is moved based on information about the movement speed of the correction lens received from the imaging apparatus main body.
The lens unit according to claim 2, wherein the lens unit is a lens unit.

In the case of the second mode, the control means determines a target position for moving the correction lens based on the information about the moving speed of the correction lens received from the imaging apparatus body.
The lens unit according to claim 2, wherein the lens unit is a lens unit.

According to any one of claims 1 to 7, characterized in that it comprises the further second memory means located between the correction position and stored in association with the lenses of the zoom lens at predetermined time intervals Lens unit.

9. The lens unit according to claim 8 , wherein the position of the zoom lens and the position of the correction lens are stored in the second storage unit at intervals corresponding to an imaging cycle in the imaging apparatus main body .

An imaging apparatus in which the lens unit according to any one of claims 1 to 9 is detachable ,
Instruction means for instructing a focus adjustment operation ;
Obtaining means for obtaining the position of the correction lens from the lens unit;
Based on the position of the correcting lens obtained by the obtaining means, a detecting means that detect the focus position of the correction lens,
Imaging apparatus characterized by comprising a transmitting means for transmitting the second information on the focus position in the lens unit.

Imaging means for capturing an image of a subject formed by the imaging optical system included in the lens unit and outputting an electrical signal;
The detecting device, the imaging device according to claim 10, wherein the imaging means based on the evaluation signal generated from the electrical signal output, for detecting a focusing position before Symbol correction lens.

Image signal output means for generating and outputting a pair of image signals by photoelectrically converting a pair of images formed by dividing light passing through the imaging optical system,
The detecting device, the imaging device according to claim 10, characterized in that based on the phase difference of the output a pair of image signals from said image signal output means for detecting a focusing position before Symbol correcting lens .

An imaging optical system including a variable power lens that performs a variable power operation, and a correction lens that corrects a change in focal plane position associated with the variable power operation of the variable power lens;
A variable power lens operating means that is connected to the variable power lens by a mechanical mechanism and receives an operation for moving the variable power lens, and a correction lens corresponding to the position of the variable power lens for each of a plurality of object distances. And a first storage unit in which first information indicating a focus position is stored in advance, and a method for controlling a lens unit that can be attached to and detached from the imaging apparatus body ,
Receiving, from the imaging device body on which the lens unit is mounted, second information about the in- focus position of the correction lens detected by the imaging device body;
Controlling the movement of the zoom lens and the correction lens,
Corresponding to the current position of the zoom lens based on the position of the zoom lens and the first information when the second information is received when the zoom lens operating means is operated A control method comprising: calculating an in-focus position of the correction lens and controlling the correction lens to move to the in-focus position .

A computer program for causing a computer to execute the control method according to claim 13 .