JP2013054087A5 - - Google Patents
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- JP2013054087A5 JP2013054087A5 JP2011190379A JP2011190379A JP2013054087A5 JP 2013054087 A5 JP2013054087 A5 JP 2013054087A5 JP 2011190379 A JP2011190379 A JP 2011190379A JP 2011190379 A JP2011190379 A JP 2011190379A JP 2013054087 A5 JP2013054087 A5 JP 2013054087A5
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[１]本発明の第１の観点に係るレンズ鏡筒は、焦点調節レンズを駆動する第１駆動部と、前記焦点調節レンズをウォブリング駆動させるためのウォブリング駆動信号をカメラボディから受信する送受信部と、前記ウォブリング駆動信号に基づいて前記第１駆動部を制御することにより前記焦点調節レンズをウォブリング駆動させる制御部とを含み、前記制御部は、前記焦点調節レンズの光軸方向における移動量と光学系による像の倍率変動との関係を示す所定情報に基づいて、前記焦点調節レンズのウォブリング駆動を禁止するか否かを判断し、前記焦点調節レンズのウォブリング駆動を禁止するときは、前記焦点調節レンズのウォブリング駆動を禁止したことを示す信号を前記カメラボディに送信するように前記送受信部を制御することを特徴とする。
[２]本発明の第１の観点に係るレンズ鏡筒において、ズームレンズを駆動する第２駆動部を有し、前記所定情報が、前記ズームレンズの光軸方向における位置ごとに、前記焦点調節レンズの光軸方向における移動量と光学系による像の倍率変動との関係を示す情報であるように構成することができる。
[３]本発明の第１の観点に係るレンズ鏡筒において、前記制御部は、前記ズームレンズのレンズ位置の情報、および前記焦点調節レンズの光軸方向における位置に対応する前記所定情報に基づいて、前記焦点調節レンズをウォブリング駆動させた場合における像倍率の変動量が、予め定められた所定値以上となるか否かを判断し、前記所定値以上となる場合には、前記焦点調節レンズのウォブリング駆動を禁止するように構成することができる。
[４]本発明の第２の観点に係るレンズ鏡筒は、焦点調節レンズ（３３）を光軸方向に駆動して、光学系の焦点状態を調節する第１駆動部（３３１）と、ズームレンズ（３２）を光軸方向に駆動して、ズーム倍率を変更する第２駆動部（３２１）と、前記ズームレンズの光軸方向における位置を検出するズームレンズ位置検出部（３２２）と、前記ズームレンズの光軸方向における位置ごとに、前記焦点調節レンズの光軸方向における単位移動量と、前記光学系による像の倍率変動との関係を示す倍率変動率の情報を記憶する記憶部（３７）と、カメラボディから、前記焦点調節レンズを所定の駆動速度でウォブリング駆動させるためのウォブリング駆動信号を受信する送受信部（３６）と、前記ウォブリング駆動信号に基づいて、前記焦点調節レンズをウォブリング駆動させる駆動制御部（３６）と、前記ズームレンズのレンズ位置の情報、および前記焦点調節レンズの光軸方向における位置に対応する前記倍率変動率の情報に基づいて、前記ウォブリング駆動信号に応じて、前記焦点調節レンズをウォブリング駆動させた場合における、ウォブリング駆動時の像倍率の変動量が、予め定められた所定値以上となるか否かを判断し、前記所定値以上となる場合には、前記焦点調節レンズのウォブリング駆動を禁止する制御部（３６）と、を備えることを特徴とする。
[1] A lens barrel according to a first aspect of the present invention includes a first drive unit that drives a focus adjustment lens, and a transmission / reception unit that receives a wobbling drive signal for wobbling driving the focus adjustment lens from a camera body. And a control unit that drives the focus adjustment lens by wobbling by controlling the first drive unit based on the wobbling drive signal, and the control unit includes a movement amount in the optical axis direction of the focus adjustment lens, Based on the predetermined information indicating the relationship with the magnification fluctuation of the image by the optical system, it is determined whether or not the wobbling drive of the focus adjustment lens is prohibited. Controlling the transmission / reception unit to transmit a signal indicating that wobbling driving of the adjusting lens is prohibited to the camera body. And butterflies.
[2] The lens barrel according to the first aspect of the present invention includes a second drive unit that drives the zoom lens, and the predetermined information is the focus adjustment for each position in the optical axis direction of the zoom lens. It can be configured to be information indicating the relationship between the amount of movement of the lens in the optical axis direction and the magnification variation of the image by the optical system.
[3] In the lens barrel according to the first aspect of the present invention, the control unit is based on the information on the lens position of the zoom lens and the predetermined information corresponding to the position of the focus adjustment lens in the optical axis direction. Then, it is determined whether or not the fluctuation amount of the image magnification when the focus adjustment lens is driven by wobbling is greater than or equal to a predetermined value, and if it is greater than or equal to the predetermined value, the focus adjustment lens The wobbling drive can be prohibited.
[ 4 ] The lens barrel according to the second aspect of the present invention includes a first drive unit (331) that drives the focus adjustment lens (33) in the optical axis direction to adjust the focus state of the optical system, and a zoom. A second driving unit (321) for driving the lens (32) in the optical axis direction to change a zoom magnification; a zoom lens position detecting unit (322) for detecting a position of the zoom lens in the optical axis direction; A storage unit (37) that stores, for each position in the optical axis direction of the zoom lens, information on a magnification variation rate that indicates a relationship between a unit movement amount in the optical axis direction of the focusing lens and a magnification variation of the image by the optical system. ), A transmission / reception unit (36) for receiving a wobbling driving signal for driving the focusing lens at a predetermined driving speed from the camera body, and the focus adjustment based on the wobbling driving signal. The wobbling drive based on the drive control unit (36) for driving the node lens to wobble, the information on the lens position of the zoom lens, and the information on the magnification variation rate corresponding to the position of the focus adjustment lens in the optical axis direction. In response to the signal, it is determined whether or not the fluctuation amount of the image magnification at the time of wobbling driving when the focusing lens is driven by wobbling is greater than or equal to a predetermined value, and is greater than or equal to the predetermined value. In this case, a control unit (36) for prohibiting wobbling driving of the focus adjustment lens is provided.
[５]本発明の第２の観点に係るレンズ鏡筒において、前記制御部（３６）が、前記焦点調節レンズ（３３）のウォブリング駆動を禁止する場合には、前記送受信部（３６）を介して、前記ウォブリング駆動信号に基づくウォブリング駆動を行なわない旨の信号を前記カメラボディに送信を送信するように構成することができる。 [ 5 ] In the lens barrel according to the second aspect of the present invention , when the control unit (36) prohibits the wobbling drive of the focus adjustment lens (33), the control unit (36) passes through the transmission / reception unit (36). Thus, a signal indicating that wobbling driving based on the wobbling driving signal is not performed may be transmitted to the camera body.
[６]本発明の第２の観点に係るレンズ鏡筒において、前記制御部（３６）が、前記ウォブリング駆動信号に応じて、前記焦点調節レンズ（３３）をウォブリング駆動させた場合における、ウォブリング駆動時の像倍率の変動量が、前記所定値以上となる場合には、前記焦点調節レンズのウォブリング駆動を禁止せずに、ウォブリング駆動時の像倍率の変動量が、前記所定値未満となるような駆動速度で、前記駆動制御部に前記焦点調節レンズのウォブリング駆動を行わせるように構成することができる。 [ 6 ] In the lens barrel according to the second aspect of the present invention , the wobbling drive when the control unit (36) drives the focus adjustment lens (33) according to the wobbling drive signal. When the fluctuation amount of the image magnification at the time is equal to or greater than the predetermined value, the fluctuation amount of the image magnification during the wobbling drive is less than the predetermined value without prohibiting the wobbling drive of the focus adjustment lens. The driving control unit can be configured to perform wobbling driving of the focus adjustment lens at a high driving speed.
[７]本発明の第２の観点に係るレンズ鏡筒において、前記制御部（３６）が、前記ウォブリング駆動信号に応じて、前記焦点調節レンズ（３３）をウォブリング駆動させた場合における、ウォブリング駆動時の像倍率の変動量が、前記所定値以上となる場合には、前記焦点調節レンズのウォブリング駆動を禁止せずに、ウォブリング駆動時における前記焦点調節レンズの往復動作の回数を少なくして、前記駆動制御部に前記焦点調節レンズのウォブリング駆動を行わせるように構成することができる。 [ 7 ] In the lens barrel according to the second aspect of the present invention , the wobbling drive when the control unit (36) drives the focus adjustment lens (33) according to the wobbling drive signal. When the fluctuation amount of the image magnification at the time is equal to or greater than the predetermined value, without prohibiting the wobbling drive of the focus adjustment lens, the number of reciprocating operations of the focus adjustment lens during the wobbling drive is reduced, The drive control unit may be configured to perform wobbling driving of the focus adjustment lens.
[８]本発明のカメラシステムは、上記レンズ鏡筒と、カメラボディと、を備えることを特徴とする。 [ 8 ] A camera system according to the present invention includes the lens barrel and a camera body.
Claims (8)
前記焦点調節レンズをウォブリング駆動させるためのウォブリング駆動信号をカメラボディから受信する送受信部と、A transmission / reception unit that receives a wobbling driving signal for wobbling driving the focusing lens from the camera body;
前記ウォブリング駆動信号に基づいて前記第１駆動部を制御することにより前記焦点調節レンズをウォブリング駆動させる制御部とを含み、A control unit for driving the focus adjustment lens by wobbling by controlling the first driving unit based on the wobbling driving signal,
前記制御部は、前記焦点調節レンズの光軸方向における移動量と光学系による像の倍率変動との関係を示す所定情報に基づいて、前記焦点調節レンズのウォブリング駆動を禁止するか否かを判断し、前記焦点調節レンズのウォブリング駆動を禁止するときは、前記焦点調節レンズのウォブリング駆動を禁止したことを示す信号を前記カメラボディに送信するように前記送受信部を制御することを特徴とするレンズ鏡筒。The control unit determines whether to prohibit wobbling driving of the focus adjustment lens based on predetermined information indicating a relationship between an amount of movement of the focus adjustment lens in the optical axis direction and an image magnification variation by the optical system. When the wobbling drive of the focus adjustment lens is prohibited, the transmission / reception unit is controlled to transmit a signal indicating that the wobbling drive of the focus adjustment lens is prohibited to the camera body. A lens barrel.
ズームレンズを駆動する第２駆動部を有し、A second drive unit for driving the zoom lens;
前記所定情報は、前記ズームレンズの光軸方向における位置ごとに、前記焦点調節レンズの光軸方向における移動量と光学系による像の倍率変動との関係を示す情報であることを特徴とするレンズ鏡筒。The lens, wherein the predetermined information is information indicating a relationship between a movement amount of the focus adjustment lens in the optical axis direction and a magnification variation of the image by the optical system for each position of the zoom lens in the optical axis direction A lens barrel.
前記制御部は、前記ズームレンズのレンズ位置の情報、および前記焦点調節レンズの光軸方向における位置に対応する前記所定情報に基づいて、前記焦点調節レンズをウォブリング駆動させた場合における像倍率の変動量が、予め定められた所定値以上となるか否かを判断し、前記所定値以上となる場合には、前記焦点調節レンズのウォブリング駆動を禁止することを特徴とするレンズ鏡筒。The control unit changes the image magnification when the focus adjustment lens is driven by wobbling based on the information on the lens position of the zoom lens and the predetermined information corresponding to the position of the focus adjustment lens in the optical axis direction. It is determined whether or not the amount is equal to or greater than a predetermined value. If the amount is equal to or greater than the predetermined value, wobbling driving of the focus adjustment lens is prohibited.
ズームレンズを光軸方向に駆動して、ズーム倍率を変更する第２駆動部と、
前記ズームレンズの光軸方向における位置を検出するズームレンズ位置検出部と、
前記ズームレンズの光軸方向における位置ごとに、前記焦点調節レンズの光軸方向における単位移動量と、前記光学系による像の倍率変動との関係を示す倍率変動率の情報を記憶する記憶部と、
カメラボディから、前記焦点調節レンズを所定の駆動速度でウォブリング駆動させるためのウォブリング駆動信号を受信する送受信部と、
前記ウォブリング駆動信号に基づいて、前記焦点調節レンズをウォブリング駆動させる駆動制御部と、
前記ズームレンズのレンズ位置の情報、および前記焦点調節レンズの光軸方向における位置に対応する前記倍率変動率の情報に基づいて、前記ウォブリング駆動信号に応じて、前記焦点調節レンズをウォブリング駆動させた場合における、ウォブリング駆動時の像倍率の変動量が、予め定められた所定値以上となるか否かを判断し、前記所定値以上となる場合には、前記焦点調節レンズのウォブリング駆動を禁止する制御部と、を備えることを特徴とするレンズ鏡筒。 A first drive unit that drives the focus adjustment lens in the optical axis direction to adjust the focus state of the optical system;
A second drive unit that drives the zoom lens in the optical axis direction to change the zoom magnification;
A zoom lens position detector for detecting a position of the zoom lens in the optical axis direction;
A storage unit that stores information on a magnification variation rate indicating a relationship between a unit movement amount in the optical axis direction of the focus adjustment lens and a magnification variation of an image by the optical system, for each position in the optical axis direction of the zoom lens; ,
A transmission / reception unit for receiving a wobbling driving signal for driving the focusing lens at a predetermined driving speed from a camera body;
Based on the wobbling drive signal, a drive control unit that drives the focus adjustment lens to wobble,
Based on the information on the lens position of the zoom lens and the information on the magnification variation rate corresponding to the position of the focus adjustment lens in the optical axis direction, the focus adjustment lens is driven to wobble according to the wobbling drive signal. In this case, it is determined whether or not the fluctuation amount of the image magnification at the time of wobbling driving is equal to or greater than a predetermined value, and when it is equal to or larger than the predetermined value, wobbling driving of the focus adjustment lens is prohibited. And a control unit.
前記制御部は、前記焦点調節レンズのウォブリング駆動を禁止する場合には、前記送受信部を介して、前記ウォブリング駆動信号に基づくウォブリング駆動を行なわない旨の信号を前記カメラボディに送信を送信することを特徴とするレンズ鏡筒。 The lens barrel according to claim 4 ,
When the control unit prohibits the wobbling drive of the focus adjustment lens, the control unit transmits a signal to the camera body that the wobbling drive based on the wobbling drive signal is not performed via the transmission / reception unit. A lens barrel characterized by
前記制御部は、前記ウォブリング駆動信号に応じて、前記焦点調節レンズをウォブリング駆動させた場合における、ウォブリング駆動時の像倍率の変動量が、前記所定値以上となる場合には、前記焦点調節レンズのウォブリング駆動を禁止せずに、ウォブリング駆動時の像倍率の変動量が、前記所定値未満となるような駆動速度で、前記駆動制御部に前記焦点調節レンズのウォブリング駆動を行わせることを特徴とするレンズ鏡筒。 The lens barrel according to claim 4 ,
When the amount of variation in image magnification at the time of wobbling driving is greater than or equal to the predetermined value in the case where the control lens drives the focusing lens according to the wobbling driving signal, The wobbling drive of the focus adjustment lens is performed by the drive control unit at a driving speed such that the variation amount of the image magnification during the wobbling drive is less than the predetermined value without prohibiting the wobbling drive. A lens barrel.
前記制御部は、前記ウォブリング駆動信号に応じて、前記焦点調節レンズをウォブリング駆動させた場合における、ウォブリング駆動時の像倍率の変動量が、前記所定値以上となる場合には、前記焦点調節レンズのウォブリング駆動を禁止せずに、ウォブリング駆動時における前記焦点調節レンズの往復動作の回数を少なくして、前記駆動制御部に前記焦点調節レンズのウォブリング駆動を行わせることを特徴とするレンズ鏡筒。 The lens barrel according to claim 4 ,
When the amount of variation in image magnification at the time of wobbling driving is greater than or equal to the predetermined value in the case where the control lens drives the focusing lens according to the wobbling driving signal, The lens barrel is characterized in that the wobbling drive of the focus adjustment lens is reduced by reducing the number of reciprocating operations of the focus adjustment lens during the wobbling drive without prohibiting the wobbling drive of the lens. .
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011190379A JP5953679B2 (en) | 2011-09-01 | 2011-09-01 | Lens barrel and camera system |
| PCT/JP2012/066715 WO2013002378A1 (en) | 2011-06-30 | 2012-06-29 | Lens tube and camera body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011190379A JP5953679B2 (en) | 2011-09-01 | 2011-09-01 | Lens barrel and camera system |
Publications (3)
| Publication Number | Publication Date |
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| JP2013054087A JP2013054087A (en) | 2013-03-21 |
| JP2013054087A5 true JP2013054087A5 (en) | 2014-10-16 |
| JP5953679B2 JP5953679B2 (en) | 2016-07-20 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3610176B2 (en) * | 1996-12-03 | 2005-01-12 | キヤノン株式会社 | IMAGING DEVICE, ITS CONTROL METHOD, AND LENS CONTROL DEVICE |
| JP2009258680A (en) * | 2008-03-27 | 2009-11-05 | Panasonic Corp | Camera system, camera body, interchangeable lens unit, focus control method, and program |
| US8767119B2 (en) * | 2009-03-13 | 2014-07-01 | Panasonic Corporation | Interchangeable lens, camera body, and camera system |
| US8126322B2 (en) * | 2009-03-13 | 2012-02-28 | Panasonic Corporation | Interchangeable lens, camera body, and camera system |
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