JP2013142882A5 - - Google Patents

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JP2013142882A5
JP2013142882A5 JP2012004559A JP2012004559A JP2013142882A5 JP 2013142882 A5 JP2013142882 A5 JP 2013142882A5 JP 2012004559 A JP2012004559 A JP 2012004559A JP 2012004559 A JP2012004559 A JP 2012004559A JP 2013142882 A5 JP2013142882 A5 JP 2013142882A5
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Priority to US13/730,099 priority patent/US9210314B2/en
Priority to CN201210589718.XA priority patent/CN103209297B/en
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上記課題を解決するために本発明に係る装置は、フォーカスレンズを備えたレンズ装置と通信可能な撮像装置であって、撮像素子による撮像信号から焦点調節用の評価値を生成する信号処理手段と、前記フォーカスレンズを振動させるために、前記レンズ装置に振動中心、振動の振幅に対応する情報を送信する送信手段と、前記評価値を用いて検出した合焦点に対応する位置に前記フォーカスレンズを移動させるための駆動命令を前記レンズ装置に送信するカメラ制御手段と、前記レンズ装置から、前記フォーカスレンズの移動量に対する像倍率変化量に対応するデータを取得する取得手段とを備える。前記カメラ制御手段は、検出した合焦方向に前記フォーカスレンズの振動中心を移動させる際、前記フォーカスレンズの移動量に対する像倍率変化量が第２の変化量よりも大きい第１の変化量のときは、前記第２の変化量の場合の振動の振幅に比較して振動の振幅を小さくする。 In order to solve the above-described problems, an apparatus according to the present invention is an imaging apparatus capable of communicating with a lens apparatus including a focus lens, and a signal processing unit that generates an evaluation value for focus adjustment from an imaging signal from an imaging element; Transmitting means for transmitting information corresponding to a vibration center and vibration amplitude to the lens device in order to vibrate the focus lens, and the focus lens at a position corresponding to a focal point detected using the evaluation value. Camera control means for transmitting a drive command for movement to the lens apparatus, and acquisition means for acquiring data corresponding to the image magnification change amount with respect to the movement amount of the focus lens from the lens apparatus . When the camera control unit moves the vibration center of the focus lens in the detected in-focus direction, the image magnification change amount with respect to the focus lens movement amount is a first change amount larger than a second change amount. Reduces the amplitude of vibration compared to the amplitude of vibration in the case of the second change amount .

Claims (26)

フォーカスレンズを備えたレンズ装置と通信可能な撮像装置であって、
撮像素子による撮像信号から焦点調節用の評価値を生成する信号処理手段と、
前記フォーカスレンズを振動させるために、前記レンズ装置に振動中心、振動の振幅に対応する情報を送信する送信手段と、
前記評価値を用いて検出した合焦点に対応する位置に前記フォーカスレンズを移動させるための駆動命令を前記レンズ装置に送信するカメラ制御手段と、
前記レンズ装置から、前記フォーカスレンズの移動量に対する像倍率変化量に対応するデータを取得する取得手段とを備え、
前記カメラ制御手段は、検出した合焦方向に前記フォーカスレンズの振動中心を移動させる際、前記フォーカスレンズの移動量に対する像倍率変化量が第２の変化量よりも大きい第１の変化量のときは、前記第２の変化量の場合の振動の振幅に比較して振動の振幅を小さくすることを特徴とする撮像装置。 An imaging device capable of communicating with a lens device having a focus lens,
Signal processing means for generating an evaluation value for focus adjustment from an image pickup signal by the image pickup device;
Transmitting means for transmitting information corresponding to the vibration center and vibration amplitude to the lens device to vibrate the focus lens;
Camera control means for transmitting to the lens device a drive command for moving the focus lens to a position corresponding to the focal point detected using the evaluation value ;
Acquisition means for acquiring data corresponding to the amount of change in image magnification with respect to the amount of movement of the focus lens from the lens device ;
When the camera control unit moves the vibration center of the focus lens in the detected in-focus direction, the image magnification change amount with respect to the focus lens movement amount is a first change amount larger than a second change amount. Is an imaging device characterized in that the amplitude of vibration is made smaller than the amplitude of vibration in the case of the second change amount . 前記第２の変化量は閾値を示し、前記カメラ制御手段は、前記フォーカスレンズの移動量に対する像倍率変化量が前記閾値以下のときは前記振動の振幅を大きくすることを特徴とする請求項１に記載の撮像装置。 The second change amount indicates a threshold value, and the camera control unit increases the amplitude of the vibration when an image magnification change amount with respect to a movement amount of the focus lens is equal to or less than the threshold value. The imaging device described in 1 . 前記カメラ制御手段は、合焦点近傍での前記フォーカスレンズの移動量に対する像倍率変化量が前記第１の変化量より大きいと判定した場合、中心移動時の駆動振幅を振動時の振幅未満に制限する第１の駆動方式に変更し、前記第２の駆動量以下であると判定した場合、中心移動時の駆動振幅を振動時の振幅以上に設定する第２の駆動方式に変更することを特徴とする請求項１または２に記載の撮像装置。 If the camera control means determines that the amount of change in image magnification relative to the amount of movement of the focus lens near the focal point is greater than the first amount of change, the drive amplitude during center movement is limited to less than the amplitude during vibration. When it is determined that the driving amount is equal to or less than the second driving amount , the driving amplitude at the time of center movement is changed to a second driving method in which the driving amplitude is set to be equal to or larger than the amplitude at the time of vibration. The imaging apparatus according to claim 1 or 2. 前記カメラ制御手段は、前記第１の駆動方式に変更した場合、振動時の振幅から前記振動中心の移動幅である中心移動振幅を減算し、また前記第２の駆動方式に変更した場合、振動時の振幅に前記中心移動振幅を加算する処理を行うことを特徴とする請求項３に記載の撮像装置。 When the camera control means is changed to the first drive system, the camera movement means subtracts the center movement amplitude, which is the movement width of the vibration center, from the amplitude at the time of vibration, and when changed to the second drive system, the camera control means The imaging apparatus according to claim 3 , wherein a process of adding the center movement amplitude to a time amplitude is performed. 前記カメラ制御手段は、前記合焦点近傍での前記フォーカスレンズの移動量に対する像倍率変化量が閾値より大きいと判定した場合、前回の評価値と今回の評価値を比較することにより駆動方向を決定し、決定された方向に所定量だけ前記フォーカスレンズを移動させる請求項３または４に記載の撮像装置。When the camera control unit determines that the amount of change in image magnification with respect to the amount of movement of the focus lens in the vicinity of the in-focus point is greater than a threshold value, the driving direction is determined by comparing the previous evaluation value with the current evaluation value. The imaging apparatus according to claim 3, wherein the focus lens is moved by a predetermined amount in the determined direction. 前記カメラ制御手段は、前記合焦点近傍での前記フォーカスレンズの移動量に対する像倍率変化量が閾値より大きいと判定した場合、前記フォーカスレンズを光軸方向に振動させることなく移動させたときの前記評価値の変化から合焦方向を検出して当該フォーカスレンズの駆動方向を決定して駆動制御を行い、
前記合焦点近傍での前記フォーカスレンズの移動量に対する像倍率変化量が前記閾値以下であると判定した場合、前記フォーカスレンズを光軸方向に振動させたときの前記評価値の変化から合焦方向を検出するとともに、検出した合焦方向に前記フォーカスレンズの振動中心を移動させる駆動制御を行うことを特徴とする請求項３から５のいずれか１項に記載の撮像装置。 Said camera control unit, when the image magnification variation with respect to the moving amount of the focus lens at the focus point near is judged greater than the threshold value, the when moving without vibrating the focus lens in the optical axis direction The focus direction is detected from the change in the evaluation value, the drive direction of the focus lens is determined, and drive control is performed.
When it is determined that the image magnification change amount with respect to the movement amount of the focus lens in the vicinity of the in-focus point is equal to or less than the threshold value, the in-focus direction is determined from the change in the evaluation value when the focus lens is vibrated in the optical axis direction. 6. The image pickup apparatus according to claim 3 , wherein a drive control is performed to move the vibration center of the focus lens in the detected in-focus direction. 前記カメラ制御手段は、前記合焦点近傍での前記フォーカスレンズの移動量に対する像倍率変化量が閾値より大きい場合、合焦判定の後で前記フォーカスレンズを合焦点に対応する位置へ移動させる制御を行ってから、前記評価値を前記信号処理手段から取得し、当該評価値と前回に取得した前記評価値との差分量が閾値以下であると判定した場合、前記フォーカスレンズの振動または移動を禁止することを特徴とする請求項３から５のいずれか１項に記載の撮像装置。 The camera control means performs control to move the focus lens to a position corresponding to the in-focus position after the focus determination when the image magnification change amount with respect to the focus lens movement amount in the vicinity of the in-focus position is larger than a threshold value. When the evaluation value is acquired from the signal processing means and the difference between the evaluation value and the previously acquired evaluation value is determined to be less than or equal to a threshold value, vibration or movement of the focus lens is prohibited. The image pickup apparatus according to claim 3 , wherein the image pickup apparatus is an image pickup apparatus. 前記カメラ制御手段は、前記レンズ装置に許容錯乱円のデータを送信し、当該許容錯乱円のデータに基づいて演算された、焦点深度当たりの像倍率変化量を示すデータを前記レンズ装置から受信することを特徴とする請求項１から７のいずれか１項に記載の撮像装置。 The camera control means transmits allowable circle of confusion circle data to the lens device, and receives data indicating the amount of change in image magnification per depth of focus calculated from the data of the allowable circle of confusion from the lens device. the imaging apparatus according to any one of claims 1 7, characterized in that. フォーカスレンズを備えたレンズ装置を通信可能な撮像装置であって、
撮像素子による撮像信号から焦点調節用の評価値を生成する信号処理手段と、
前記フォーカスレンズを振動させるために、前記フォーカスレンズの振動中心、振動の振幅に対応する情報を前記レンズ装置に送信する送信手段と、
前記評価値を用いて検出した合焦点に対応する位置に前記フォーカスレンズを移動させるための駆動命令を前記レンズ装置に送信するカメラ制御手段と、
前記レンズ装置から像倍率変化量を示すデータを取得する取得手段とを備え、
前記カメラ制御手段は、前記フォーカスレンズを光軸方向に振動させたときの前記評価値の変化から合焦方向を検出するとともに、検出した合焦方向に前記フォーカスレンズの振動中心を移動させる中心移動を行う第一のモードと、前記フォーカスレンズを移動させて評価値のピーク値を探索して合焦点に対応する位置に前記フォーカスレンズを移動させる第二のモードとで動作し、
前記レンズ装置から取得した像倍率変化量を示すデータおよび前記フォーカスレンズの振動振幅、中心移動量を用いて、合焦点近傍での前記フォーカスレンズの移動量に対する像倍率変化量が閾値より大きいと判定した場合、前記第一のモードを禁止することを特徴とする撮像装置。 An imaging device capable of communicating with a lens device including a focus lens,
Signal processing means for generating an evaluation value for focus adjustment from an image pickup signal by the image pickup device;
Transmitting means for transmitting information corresponding to the vibration center of the focus lens and the amplitude of vibration to the lens device in order to vibrate the focus lens;
A camera control unit for transmitting a drive command for moving the focus lens to the position corresponding to the focal point detected by using the evaluation value to the lens apparatus,
Acquisition means for acquiring data indicating an image magnification change amount from the lens device,
The camera control means detects a focus direction from a change in the evaluation value when the focus lens is vibrated in the optical axis direction, and moves the center of vibration of the focus lens in the detected focus direction. It is operating in a first mode, and said second mode in which moves the focus lens searches the peak value of the evaluation value by moving the focus lens to the position corresponding to the focal point of performing,
Using the data indicating the image magnification change amount acquired from the lens device, the vibration amplitude of the focus lens, and the center movement amount, it is determined that the image magnification change amount with respect to the focus lens movement amount in the vicinity of the in-focus point is larger than a threshold value. In such a case, the image pickup apparatus prohibits the first mode. 前記カメラ制御手段は、合焦点でフォーカスレンズを停止させた後、前記評価値の変動幅が所定値より大きい場合に前記フォーカスレンズの駆動を再開させ、
前記レンズ装置から取得した像倍率変化量を示すデータおよび前記フォーカスレンズの振動振幅、中心移動量を用いて、前記合焦点近傍でのフォーカスレンズの移動量に対する像倍率変化量が閾値より大きいと判定した場合、当該像倍率変化量が前記閾値以下の場合と比較して前記所定値を大きくすることを特徴とする請求項９に記載の撮像装置。 The camera control means, after stopping the focus lens at the in-focus point, restarts the driving of the focus lens when the fluctuation range of the evaluation value is larger than a predetermined value,
Vibration amplitude of the data and the focus lens showing an image magnification change amount acquired from the lens device, using the center movement amount, determined image magnification variation amount is larger than the threshold for the amount of movement of the focus lens at the focus point near The imaging apparatus according to claim 9 , wherein when the image magnification change amount is larger than the predetermined value, the predetermined value is increased. 前記カメラ制御手段は、被写体像の合焦度に応じて像倍率変化による焦点調節制御の切り替えのための前記閾値を変更することを特徴とする請求項９または１０に記載の撮像装置。 Said camera control unit, the imaging apparatus according to claim 9 or 10, characterized in that changing the threshold value for switching the focusing control by the image magnification varies depending on the focus of the subject image. 撮像素子による撮像信号から焦点調節用の評価値を生成する信号処理手段と、前記評価値を用いて検出した合焦点に対応する位置に前記フォーカスレンズを移動させるための駆動命令を前記レンズ装置に送信するカメラ制御手段と、を有する撮像装置と通信可能なレンズ装置であって、
前記撮像装置へ、前記フォーカスレンズの移動量に対する像倍率変化量に対応するデータを周期的に送信する送信手段と、
前記カメラ制御手段から振動中心、振動の振幅に対応する情報を周期的に受信し、該受信した振動中心、振動の振幅に対応する情報に基づいて前記フォーカスレンズを振動させるレンズ制御手段とを備え、
前記フォーカスレンズの移動量に対する像倍率変化量が第２の変化量より大きい第１の変化量のときは、振動中心の移動の際に振動の振幅が小さくなることを特徴とするレンズ装置。 Signal processing means for generating an evaluation value for focus adjustment from an image pickup signal by the image pickup device, and a drive command for moving the focus lens to a position corresponding to a focal point detected using the evaluation value to the lens device A lens control device capable of communicating with an imaging device having a camera control means for transmitting ,
Transmission means for periodically transmitting data corresponding to an image magnification change amount with respect to a movement amount of the focus lens to the imaging device ;
Lens control means for periodically receiving information corresponding to a vibration center and vibration amplitude from the camera control means, and vibrating the focus lens based on the received information corresponding to the vibration center and vibration amplitude. ,
The lens apparatus according to claim 1, wherein when the image magnification change amount with respect to the focus lens movement amount is a first change amount larger than a second change amount, the vibration amplitude decreases when the vibration center moves. 前記第２の変化量は閾値を示し、前記振動の振幅は、前記フォーカスレンズの移動量に対する像倍率変化量が前記閾値以下のときは大きくなることを特徴とする請求項１２に記載のレンズ装置。13. The lens apparatus according to claim 12, wherein the second change amount indicates a threshold value, and the amplitude of the vibration increases when an image magnification change amount with respect to a moving amount of the focus lens is equal to or less than the threshold value. . 前記レンズ制御手段は、前記カメラ制御手段から許容錯乱円のデータを受信し、当該許容錯乱円のデータに基づいて焦点深度当たりの像倍率変化量を示すデータを演算して前記カメラ制御手段に送信することを特徴とする請求項１２または１３に記載のレンズ装置。 The lens control unit receives data of allowable circle of confusion from the camera control unit, calculates data indicating an image magnification change amount per depth of focus based on the data of the allowable circle of confusion, and transmits the data to the camera control unit The lens apparatus according to claim 12 , wherein the lens apparatus is a lens apparatus. 前記レンズ制御手段による前記像倍率変化量の送信周期と、前記振動中心、振動の振幅に対応する情報の受信周期とは同じであることを特徴とする請求項１２から１４のいずれか１項に記載のレンズ装置。The transmission cycle of the image magnification change amount by the lens control unit and the reception cycle of information corresponding to the vibration center and the amplitude of vibration are the same as any one of claims 12 to 14. The lens device described. 前記カメラ制御手段は、合焦点近傍での前記フォーカスレンズの移動量に対する像倍率変化量が前記第１の変化量より大きいと判定した場合、中心移動時の駆動振幅を振動時の振幅未満に制限する第１の駆動方式に変更し、前記第２の駆動量以下であると判定した場合、中心移動時の駆動振幅を振動時の振幅以上に設定する第２の駆動方式に変更することを特徴とする請求項１２から１５のいずれか１項に記載のレンズ装置。If the camera control means determines that the amount of change in image magnification relative to the amount of movement of the focus lens near the focal point is greater than the first amount of change, the drive amplitude during center movement is limited to less than the amplitude during vibration. When it is determined that the driving amount is equal to or less than the second driving amount, the driving amplitude at the time of center movement is changed to a second driving method in which the driving amplitude is set to be equal to or larger than the amplitude at the time of vibration. The lens device according to any one of claims 12 to 15. 前記カメラ制御手段は、前記第１の駆動方式に変更した場合、振動時の振幅から前記振動中心の移動幅である中心移動振幅を減算し、また前記第２の駆動方式に変更した場合、振動時の振幅に前記中心移動振幅を加算する処理を行うことを特徴とする請求項１６に記載のレンズ装置。When the camera control means is changed to the first drive system, the camera movement means subtracts the center movement amplitude, which is the movement width of the vibration center, from the amplitude at the time of vibration, and when changed to the second drive system, the camera control means The lens apparatus according to claim 16, wherein a process of adding the center movement amplitude to a time amplitude is performed. 前記カメラ制御手段は、前記合焦点近傍での前記フォーカスレンズの移動量に対する像倍率変化量が閾値より大きいと判定した場合、前回の評価値と今回の評価値を比較することにより駆動方向を決定し、決定された方向に所定量だけ前記フォーカスレンズを移動させる請求項１６または１７に記載のレンズ装置。When the camera control unit determines that the amount of change in image magnification with respect to the amount of movement of the focus lens in the vicinity of the in-focus point is greater than a threshold value, the driving direction is determined by comparing the previous evaluation value with the current evaluation value. The lens apparatus according to claim 16, wherein the focus lens is moved by a predetermined amount in the determined direction. 前記カメラ制御手段は、前記合焦点近傍での前記フォーカスレンズの移動量に対する像倍率変化量が閾値より大きいと判定した場合、前記フォーカスレンズを光軸方向に振動させることなく移動させたときの前記評価値の変化から合焦方向を検出して当該フォーカスレンズの駆動方向を決定して駆動制御を行い、
前記合焦点近傍での前記フォーカスレンズの移動量に対する像倍率変化量が前記閾値以下であると判定した場合、前記フォーカスレンズを光軸方向に振動させたときの前記評価値の変化から合焦方向を検出するとともに、検出した合焦方向に前記フォーカスレンズの振動中心を移動させる駆動制御を行うことを特徴とする請求項１６から１８のいずれか１項に記載のレンズ装置。 When the camera control unit determines that the image magnification change amount with respect to the movement amount of the focus lens in the vicinity of the in-focus point is larger than a threshold value, the camera control unit moves the focus lens without vibrating in the optical axis direction. The focus direction is detected from the change in the evaluation value, the drive direction of the focus lens is determined, and drive control is performed.
When it is determined that the image magnification change amount with respect to the movement amount of the focus lens in the vicinity of the in-focus point is equal to or less than the threshold value, the in-focus direction is determined from the change in the evaluation value when the focus lens is vibrated in the optical axis direction. The lens apparatus according to any one of claims 16 to 18, wherein the lens apparatus performs drive control for moving the vibration center of the focus lens in the detected in-focus direction. 前記カメラ制御手段は、前記合焦点近傍での前記フォーカスレンズの移動量に対する像倍率変化量が閾値より大きい場合、合焦判定の後で前記フォーカスレンズを合焦点に対応する位置へ移動させる制御を行ってから、前記評価値を前記信号処理手段から取得し、当該評価値と前回に取得した前記評価値との差分量が閾値以下であると判定した場合、前記フォーカスレンズの振動または移動を禁止することを特徴とする請求項１６から１８のいずれか１項に記載のレンズ装置。The camera control means performs control to move the focus lens to a position corresponding to the in-focus position after the focus determination when the image magnification change amount with respect to the focus lens movement amount in the vicinity of the in-focus position is larger than a threshold value. When the evaluation value is acquired from the signal processing means and the difference between the evaluation value and the previously acquired evaluation value is determined to be less than or equal to a threshold value, vibration or movement of the focus lens is prohibited. The lens device according to claim 16, wherein the lens device is a lens device. 前記カメラ制御手段は、前記レンズ装置に許容錯乱円のデータを送信し、当該許容錯乱円のデータに基づいて演算された、焦点深度当たりの像倍率変化量を示すデータを前記レンズ装置から受信することを特徴とする請求項１２乃至２０のいずれか一項に記載のレンズ装置。The camera control means transmits allowable confusion circle data to the lens device, and receives data indicating an image magnification change amount per depth of focus calculated from the allowable confusion circle data from the lens device. The lens device according to claim 12, wherein the lens device is a lens device. フォーカスレンズを備えたレンズ装置と通信可能な撮像装置にて実行される制御方法であって、
前記撮像装置に設けた信号処理手段で撮像素子による撮像信号から焦点調節用の評価値を生成する評価値生成ステップと、
前記撮像装置に設けたカメラ制御手段により、前記フォーカスレンズを振動させるために、前記レンズ装置に振動中心、振動の振幅に対応する情報を送信する送信ステップと、
前記撮像装置に設けたカメラ制御手段により、前記評価値を用いて検出した合焦点に対応する位置に前記フォーカスレンズを移動させるための駆動命令を前記レンズ装置に送信するカメラ制御ステップと、
前記撮像装置に設けたカメラ制御手段により、前記レンズ装置から、前記フォーカスレンズの移動量に対する像倍率変化量に対応するデータを取得する取得ステップと、
を有し、
前記カメラ制御ステップはさらに、検出した合焦方向に前記フォーカスレンズの振動中心を移動させる際、前記フォーカスレンズの移動量に対する像倍率変化量が第２の変化量よりも大きい第１の変化量のときは、前記第２の変化量の場合の振動の振幅に比較して振動の振幅を小さくするステップとを有することを特徴とする撮像装置の制御方法。 A control method executed by an imaging device capable of communicating with a lens device including a focus lens,
An evaluation value generating step of generating an evaluation value for focus adjustment from an image pickup signal by an image pickup device by a signal processing means provided in the image pickup apparatus;
A transmission step of transmitting information corresponding to the vibration center and vibration amplitude to the lens device in order to vibrate the focus lens by the camera control means provided in the imaging device;
A camera control step of transmitting, to the lens apparatus, a drive command for moving the focus lens to a position corresponding to a focal point detected using the evaluation value by a camera control unit provided in the imaging apparatus;
An acquisition step of acquiring data corresponding to an image magnification change amount with respect to a movement amount of the focus lens from the lens device by a camera control unit provided in the imaging device;
Have
In the camera control step, when the vibration center of the focus lens is moved in the detected focus direction, the image magnification change amount with respect to the focus lens movement amount is a first change amount larger than a second change amount. And a step of reducing the amplitude of the vibration as compared with the amplitude of the vibration in the case of the second change amount . フォーカスレンズを備えたレンズ装置と通信可能な撮像装置にて実行される制御方法であって、
前記撮像装置に設けた信号処理手段で撮像素子による撮像信号から焦点調節用の評価値を生成する信号処理ステップと、
前記撮像装置に設けたカメラ制御手段により、前記フォーカスレンズを振動させるために、前記レンズ装置に振動中心、振動の振幅に対応する情報を送信する送信ステップと、
前記撮像装置に設けたカメラ制御手段により、前記評価値を用いて検出した合焦点に対応する位置に前記フォーカスレンズを移動させるための駆動命令を前記レンズ装置に送信するカメラ制御ステップと、
前記撮像装置に設けたカメラ制御手段により、前記レンズ装置から像倍率変化量を示すデータを取得する取得ステップと、
を有し、
前記カメラ制御ステップはさらに、前記レンズ装置から像倍率変化量を示すデータを取得する取得ステップと、
前記像倍率変化量を示すデータおよび前記フォーカスレンズを振動させるための振動振幅、中心移動量を用いて、合焦点近傍でのフォーカスレンズの移動量に対する像倍率変化量が閾値より大きいか否かを判定する判定ステップと、
前記判定ステップにて前記振動振幅に対する像倍率変化量が閾値より大きいと判定された場合、前記フォーカスレンズを光軸方向に振動させることなく移動させたときの前記評価値の変化から合焦方向を検出して当該フォーカスレンズの駆動方向を決定して駆動制御を行うステップと、
前記判定ステップにて前記振動振幅に対する像倍率変化量が閾値以下であると判定された場合、前記フォーカスレンズを光軸方向に振動させたときの前記評価値の変化から合焦方向を検出するとともに、検出した合焦方向に前記フォーカスレンズの振動中心を移動させる駆動制御を行うステップを有することを特徴とする撮像装置の制御方法。 A control method executed by an imaging device capable of communicating with a lens device including a focus lens,
A signal processing step of generating an evaluation value for focus adjustment from an image pickup signal by an image pickup device by a signal processing unit provided in the image pickup apparatus;
A transmission step of transmitting information corresponding to the vibration center and vibration amplitude to the lens device in order to vibrate the focus lens by the camera control means provided in the imaging device;
The camera control means provided in the imaging device, a camera control step of transmitting a drive command for moving the focus lens to the position corresponding to the focal point detected by using the evaluation value to the lens apparatus,
An acquisition step of acquiring data indicating an image magnification change amount from the lens device by a camera control unit provided in the imaging device;
Have
The camera control step further includes an acquisition step of acquiring data indicating an image magnification change amount from the lens device;
Whether the image magnification change amount with respect to the focus lens movement amount in the vicinity of the in-focus point is larger than a threshold value using the data indicating the image magnification change amount, the vibration amplitude for vibrating the focus lens, and the center movement amount. A determination step for determining;
If it is determined in the determination step that the image magnification change amount with respect to the vibration amplitude is larger than a threshold value, the focus direction is determined from the change in the evaluation value when the focus lens is moved without vibrating in the optical axis direction. Detecting and determining the drive direction of the focus lens to perform drive control;
When it is determined in the determination step that the image magnification change amount with respect to the vibration amplitude is equal to or less than a threshold value, the in-focus direction is detected from the change in the evaluation value when the focus lens is vibrated in the optical axis direction. A control method for an image pickup apparatus, comprising a step of performing drive control for moving the vibration center of the focus lens in the detected in-focus direction. 撮像素子による撮像信号から焦点調節用の評価値を生成する信号処理手段と、前記評価値を用いて検出した合焦点に対応する位置に前記フォーカスレンズを移動させるための駆動命令を前記レンズ装置に送信するカメラ制御手段と、を有する撮像装置と通信可能なレンズ装置の制御方法であって、Signal processing means for generating an evaluation value for focus adjustment from an image pickup signal by the image pickup device, and a drive command for moving the focus lens to a position corresponding to a focal point detected using the evaluation value to the lens device A method of controlling a lens device capable of communicating with an imaging device having:
前記レンズ装置に設けられた送信手段により、前記カメラ制御手段へ、前記フォーカスレンズの移動量に対する像倍率変化量に対応するデータを周期的に送信する送信ステップと、A transmission step of periodically transmitting data corresponding to an image magnification change amount with respect to a movement amount of the focus lens to the camera control unit by a transmission unit provided in the lens apparatus;
前記レンズ装置に設けられたレンズ制御手段により、前記カメラ制御手段から振動中心、振動の振幅に対応する情報を周期的に受信し、該受信した振動中心、振動の振幅に対応する情報に基づいて前記フォーカスレンズを振動させるレンズ制御ステップと、 The lens control means provided in the lens apparatus periodically receives information corresponding to the vibration center and vibration amplitude from the camera control means, and based on the received information corresponding to the vibration center and vibration amplitude. A lens control step of vibrating the focus lens;
を有し、Have
前記フォーカスレンズの移動量に対する像倍率変化量が第２の変化量より大きい第１の変化量のときは、振動中心の移動の際に振動の振幅が小さくなることを特徴とするレンズ装置の制御方法。Control of the lens apparatus, wherein when the image magnification change amount with respect to the focus lens movement amount is a first change amount larger than a second change amount, the vibration amplitude is reduced when the vibration center is moved. Method. 請求項２２に記載の方法を撮像装置に実行させるか、または請求項２４に記載の方法をレンズ装置に実行させるようにコンピュータにより実行されるコンピュータプログラム。25. A computer program executed by a computer to cause an imaging device to execute the method according to claim 22, or to cause a lens device to execute the method according to claim 24. 請求項１に記載の撮像装置と請求項１２に記載のレンズ装置を備える撮像システム。An imaging system comprising the imaging device according to claim 1 and the lens device according to claim 12.
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