JP2009265446A5 - - Google Patents

Claims (6)

A vibration correction control circuit that corrects a deviation of the optical axis due to vibration applied to the imaging device,
An adjustment circuit for adjusting the amplitude of the angular velocity signal output from the vibration detection element for detecting the vibration;
An integration circuit that integrates the angular velocity signal output from the adjustment circuit and generates a movement amount signal indicating the movement amount of the imaging device;
A control unit that controls the gain of the adjustment circuit with reference to the amplitude value of the movement amount signal output from the integration circuit;
The controller is configured to detect the movement amount signal between an outer threshold for detecting the start of a panning state or a tilting state in the imaging apparatus and an inner threshold set to a value closer to zero than the outer threshold. When there is an amplitude value, the adjustment circuit has a gain G1 (G1 is a fixed value) set when the amplitude value exists away from zero from the outer threshold value, and the amplitude value is zero from the inner threshold value. Is set to a gain G2 (G1 <G2 <G3) which is located within a range between the gain G3 (G1 <G3 is a fixed value) set when it exists near . The control unit refers to the amplitude value of the angular velocity signal when the amplitude value of the movement amount signal exists between the outer threshold value and the inner threshold value, and the amplitude value of the angular velocity signal is greater than a predetermined set value. 2. The vibration correction according to claim 1, wherein when it is close to zero, a gain G <b> 3 when the amplitude value of the movement amount signal is close to zero from the inner threshold is set in the adjustment circuit. Control circuit. Filtering the angular velocity signal output from the adjustment circuit, further comprising a high-pass filter that outputs to the integration circuit,
The control unit disables the high-pass filter capability when the amplitude value of the movement amount signal is near zero from the inner threshold value, and the amplitude value exists between the outer threshold value and the inner threshold value. 3. The vibration correction control circuit according to claim 1, wherein the high-pass filter is enabled at times.   The control unit sets the gain of the adjustment circuit to substantially 0 when the amplitude value of the movement amount signal exists away from zero from the outer threshold value, and the amplitude value is closer to zero than the inner threshold value. When present, the gain of the adjustment circuit is substantially set to 1.0, and when the amplitude value exists between the outer threshold and the inner threshold, the gain G2 of the adjustment circuit is set to 0 <G2 <1. 4. The vibration correction control circuit according to claim 1, wherein the vibration correction control circuit is set to a value within a range of zero. A centering processing circuit for centering the movement amount signal output from the integration circuit in the zero direction;
5. The vibration correction control circuit according to claim 1, wherein the control unit refers to an amplitude value of a movement amount signal output from the centering processing circuit. A lens,
An image sensor;
A driving element for driving the lens or the imaging element;
A position detection element for detecting the position of the lens or the imaging element;
A vibration detecting element for detecting vibration;
A vibration correction control circuit according to any one of claims 1 to 5,
The vibration correction control circuit controls the drive element to correct the position of the lens or the image sensor based on a position signal output from the position detection element and the movement amount signal. apparatus.