JP2010025965A5 - - Google Patents

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JP2010025965A5
JP2010025965A5 JP2008183430A JP2008183430A JP2010025965A5 JP 2010025965 A5 JP2010025965 A5 JP 2010025965A5 JP 2008183430 A JP2008183430 A JP 2008183430A JP 2008183430 A JP2008183430 A JP 2008183430A JP 2010025965 A5 JP2010025965 A5 JP 2010025965A5
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shake
gain
output
correction
gain changing
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JP2010025965A (en
JP5235542B2 (en
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振れによる画像振れを補正する振れ補正手段と、
振れの角速度を検出する第１振れ検出手段と、
振れの加速度を検出する第２振れ検出手段と、
前記第２振れ検出手段の利得を変更する利得変更手段と、
前記第１振れ検出手段からの出力に基づく第１信号と前記第２振れ検出手段からの出力に基づく第２信号とから所定演算期間毎に補正値を演算する演算手段と、
前記補正値を用いて前記第１振れ検出手段からの出力を補正する出力補正手段と、
前記第２振れ検出手段の出力または防振対象の撮像装置に具備される駆動機構の駆動に基づいて、前記利得変更手段の利得変更動作を制御する利得変更動作制御手段と、
前記出力補正手段により補正された前記第１振れ検出手段の出力に基づいて前記振れ補正手段を駆動する振れ補正駆動手段とを有することを特徴とする防振制御装置。 Shake correction means for correcting image shake due to shake,
First shake detection means for detecting angular velocity of shake;
Second shake detection means for detecting the acceleration of shake;
Gain changing means for changing the gain of the second shake detecting means;
A computing means for computing a correction value for each predetermined computation period from a first signal based on the output from the first shake detecting means and a second signal based on the output from the second shake detecting means;
Output correction means for correcting the output from the first shake detection means using the correction value;
A gain changing operation control means for controlling the gain changing operation of the gain changing means based on the output of the second shake detecting means or driving of a driving mechanism provided in the image pickup apparatus to be shaken ;
An image stabilization control apparatus, comprising: a shake correction drive unit that drives the shake correction unit based on the output of the first shake detection unit corrected by the output correction unit. 前記利得変更動作制御手段は、前記利得変更手段に、前記第２振れ検出手段の出力が第１範囲のレベルを超えることにより前記第２振れ検出手段の利得を低下させ、前記第２振れ検出手段の出力が前記第１範囲のレベルよりも低い第２範囲のレベルに一定期間収まることに基づいて前記第２振れ検出手段の利得を復帰させることを特徴とする請求項１に記載の防振制御装置。   The gain changing operation control means causes the gain changing means to reduce the gain of the second shake detecting means when the output of the second shake detecting means exceeds the level of the first range, and the second shake detecting means 2. The image stabilization control according to claim 1, wherein the gain of the second shake detection unit is restored based on the fact that the output of the second range is within a second range level lower than the first range level for a certain period of time. apparatus. 前記利得変更動作制御手段は、前記利得変更手段に、防振対象の撮像装置に具備される駆動機構の駆動開始により前記第２振れ検出手段の利得を低下させ、前記駆動機構の駆動終了に基づいて前記第２振れ検出手段の利得を復帰させることを特徴とする請求項１に記載の防振制御装置。   The gain changing operation control means causes the gain changing means to reduce the gain of the second shake detecting means by the start of driving of the driving mechanism provided in the imaging device to be shaken, and based on the end of driving of the driving mechanism. The anti-vibration control device according to claim 1, wherein the gain of the second shake detecting means is restored. 前記利得変更動作制御手段は、前記利得変更手段に、前記第２振れ検出手段の出力が規定範囲のレベルを超えることにより前記第２振れ検出手段の利得を低下させ、防振対象の撮像装置に具備される駆動機構の駆動終了に基づいて前記第２振れ検出手段の利得を復帰させることを特徴とする請求項１に記載の防振制御装置。   The gain changing operation control means causes the gain changing means to reduce the gain of the second shake detecting means when the output of the second shake detecting means exceeds the level of a specified range, so that the image stabilization apparatus 2. The image stabilization control device according to claim 1, wherein the gain of the second shake detection unit is restored based on the end of driving of the drive mechanism provided. 前記利得変更動作制御手段は、前記所定演算期間の経過後に前記第２振れ検出手段の利得を復帰させることを特徴とする請求項２ないし４のいずれかに記載の防振制御装置。   5. The image stabilization control apparatus according to claim 2, wherein the gain changing operation control unit restores the gain of the second shake detection unit after the predetermined calculation period has elapsed. 前記利得変更手段が前記第２振れ検出手段の利得を低下させた時点を跨る前記所定演算期間に前記演算手段により演算された前記補正値は、前記出力補正手段には出力されないことを特徴とする請求項２ないし５のいずれかに記載の防振制御装置。   The correction value calculated by the calculation unit during the predetermined calculation period across the time point when the gain changing unit decreases the gain of the second shake detection unit is not output to the output correction unit. The image stabilization control device according to any one of claims 2 to 5. 前記利得変更手段が前記第２振れ検出手段の利得を低下させた時点を跨る前記所定演算期間に前記演算手段により前記補正値が演算された場合には、前記所定演算期間より以前に演算された前記補正値が前記出力補正手段に出力されることを特徴とする請求項６に記載の防振制御装置。   When the correction value is calculated by the calculation unit during the predetermined calculation period across the time point when the gain changing unit decreases the gain of the second shake detection unit, the calculation is performed before the predetermined calculation period. The image stabilization control apparatus according to claim 6, wherein the correction value is output to the output correction unit. 前記第２振れ検出手段の出力の高周波成分を減衰させる高域減衰手段と、
前記高域減衰手段を作用させた後の前記第２振れ検出手段の出力に対して前記利得変更手段で変更された利得の補完を行う利得補正手段とを有することを特徴とする請求項１ないし７のいずれかに記載の防振制御装置。 High-frequency attenuation means for attenuating the high-frequency component of the output of the second shake detection means;
2. A gain correcting means for complementing the gain changed by the gain changing means with respect to the output of the second shake detecting means after the high frequency attenuating means is actuated. 8. The anti-vibration control device according to any one of 7 above. 請求項１ないし８のいずれかに記載の防振制御装置を具備する撮像装置。   An imaging device comprising the image stabilization control device according to claim 1. 振れによる画像振れを補正する振れ補正手段を有する防振制御装置の制御方法であって、A method of controlling an image stabilization control apparatus having a shake correction means for correcting image shake due to shake,
振れの角速度を検出する第１振れ検出ステップと、A first shake detection step for detecting angular velocity of shake;
振れの加速度を検出する第２振れ検出ステップと、A second shake detection step for detecting shake acceleration;
前記第２振れ検出ステップでの利得を変更する利得変更ステップと、A gain changing step of changing the gain in the second shake detecting step;
前記第１振れ検出ステップからの出力に基づく第１信号と前記第２振れ検出ステップからの出力に基づく第２信号とから所定演算期間毎に補正値を演算する演算ステップと、A calculation step of calculating a correction value for each predetermined calculation period from the first signal based on the output from the first shake detection step and the second signal based on the output from the second shake detection step;
前記補正値を用いて前記第１振れ検出ステップからの出力を補正する出力補正ステップと、An output correction step of correcting the output from the first shake detection step using the correction value;
前記第２振れ検出ステップでの出力または防振対象の撮像装置に具備される駆動機構の駆動に基づいて、前記利得変更ステップの利得変更動作を制御する利得変更動作制御ステップと、A gain changing operation control step for controlling a gain changing operation of the gain changing step based on an output in the second shake detecting step or driving of a driving mechanism provided in an imaging device to be imaged;
前記出力補正ステップにて補正された前記第１振れ検出ステップの出力に基づいて前記振れ補正手段を駆動する振れ補正駆動ステップとを有することを特徴とする防振制御装置の制御方法。And a shake correction drive step of driving the shake correction means based on the output of the first shake detection step corrected in the output correction step.
JP2008183430A 2008-07-15 2008-07-15 Image blur correction apparatus or lens apparatus including the same, image pickup apparatus, and image blur correction apparatus control method Active JP5235542B2 (en)

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JP5675179B2 (en) * 2010-06-11 2015-02-25 キヤノン株式会社 Anti-shake control device, imaging device, and anti-shake control method
JP5181001B2 (en) 2010-08-09 2013-04-10 キヤノン株式会社 Image blur correction apparatus, control method therefor, and imaging apparatus and optical apparatus equipped with the image blur correction apparatus
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US10581081B1 (en) 2019-02-01 2020-03-03 Chang Chun Petrochemical Co., Ltd. Copper foil for negative electrode current collector of lithium ion secondary battery

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JP2004295027A (en) * 2003-03-28 2004-10-21 Nikon Corp Blurring correction device
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