JPH11337992A - Image blurring correction device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent useless arithmetic operation for deciding whether an equipment loading an image blurring correction device is fixed to a fixing member and used or not from being executed by providing the device with a supporting state deciding action control means setting whether a supporting state decision means is actuated or not. SOLUTION: The band of a band-pass filter 9 is set to a camera shake frequency. Based on the decision signal thereof, it is decided by a supporting state decision circuit 10 whether a camera is held by hands or it is installed on a tripod and the like. Based on the decided result, image blurring is corrected with an optimum characteristic for the respective states. By a supporting state action inhibition circuit 16, the inhibition of a supporting state deciding action is instructed by detecting the action mode of the camera or detecting that a panning action is executed. Thus, even while the supporting state deciding action is executed, it is immediately inhibited when a shake signal which shows that the panning action is started and which is outputted from a vibration detection means becomes equal to or over a prescribed value.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support state judging device for judging whether a device equipped with an image blur correcting device is installed on a fixed member and used by calculating a shake signal from a vibration detecting means. The present invention relates to an improvement in an image blur correction device having means.

[0002]

2. Description of the Related Art Hitherto, there has been proposed an apparatus for correcting image blur by controlling vibration of an optical system such as a camera, that is, controlling vibration due to hand shake or the like. As a typical one of the shake correction methods used for a camera or the like, a part or all of a photographing optical system is driven based on shake information of a camera detected by a shake detection sensor to form an image plane. Is controlled.

However, in the conventional image blur correction apparatus, in order to generally correct the vibration of the camera shake or the vibration having a frequency distribution similar thereto, it is necessary to select a shake detection sensor and a shake correction optical system corresponding thereto. In addition, a response frequency band of the sensor and the driving mechanism is set. Therefore, when such an image blur correction device is used by being mounted on a tripod or the like, the following disadvantages occur.

(1) Even when little or no shake correction is required, the shake correction mechanism is operating and the power consumption increases.

(2) In a still camera, a high-frequency shock with a small displacement amplitude is generated by the quick return mirror or the shutter mechanism at the time of release, and this may cause an erroneous output of the shake detection sensor. In this case, the shake correction mechanism performs shake correction that is not related to camera shake, and promotes image shake.

(3) The low-frequency drift signal (fluctuation) output from the shake detection sensor causes the shake correction mechanism to perform shake correction irrespective of camera shake, thereby promoting image shake.

Therefore, in order to solve this problem, the support state of the camera is automatically determined, and the image blur correction characteristic is changed according to the support state. It has been proposed to perform optimal image blur correction.

[0008]

On the other hand, in the image blur correction apparatus as proposed above, when the image blur correction mode is set to the panning mode, it is considered that the framing operation mainly composed of panning is performed. Can be Here, the support state determination of the image blur correction apparatus is basically performed based on the magnitude of the signal value of the output of the blur sensor. If a panning operation is performed during the support state determination in a state where the camera is mounted on a tripod, the signal value becomes larger than that in a normal hand-held state. The calculation algorithm is such that it is determined that the camera is in a state, and it is almost impossible to determine that the camera is mounted on a tripod or the like. Also, performing a panning operation means that some state (posture) change has occurred in the image blur correction apparatus, and therefore it is desirable not to determine that the apparatus is mounted on a tripod or the like.

However, in the conventional configuration, the support state of the image blur correction device is determined uniformly regardless of the image blur correction mode. In other words, useless calculations may be performed.

(Object of the Invention) An object of the present invention is to provide a wasteful image blur correction apparatus capable of preventing a calculation of whether a device equipped with the image blur correction apparatus is used by being mounted on a fixed member. It is intended to provide.

[0011]

In order to achieve the above object, the present invention according to claims 1 to 6, according to the present invention, determines whether an apparatus equipped with this image blur correction device is mounted on a fixed member and used. A support state determination unit that determines by calculating a shake signal from the vibration detection unit, and any one of a plurality of different image shake correction characteristics is set based on a determination result by the support state determination unit. Image shake correction characteristic setting means, and drives the optical axis eccentric means based on the shake signal from the vibration detection means and the set image shake correction characteristic,
An image blur correction device having image blur correction means for performing image blur correction, wherein the image blur correction device has a support state determination operation control means for setting whether or not the operation of the support state determination means is performed. It is.

In the above arrangement, if the device equipped with the image blur correction device is an optical device, and if the image blur correction mode of the optical device is a panning mode, the support state determination means by the support state determination means To prohibit the operation,
Even while the support state determination operation is being performed as not in the panning mode, the panning operation can be considered to have been started.If the shake signal from the vibration detection unit has become a predetermined value or more, the support state is immediately determined. The judgment operation is prohibited.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on illustrated embodiments.

FIG. 1 is a perspective view showing an image blur correcting apparatus according to an embodiment of the present invention, and shows an example provided in an interchangeable lens of a single-lens reflex camera.

This image blur correction device corrects image blur by moving an image blur correction lens in the directions of arrows p (pitch) and y (yaw) in a plane perpendicular to the optical axis.

In FIG. 1, a lens holding frame 901 for holding a correction lens 900 can slide on a pitch slide shaft 903p via a slide bearing 902p. In addition, the pitch slide shaft 903p is
04. The intermediate arm 904 slides on a yaw slide shaft 903y via a slide bearing 902y. Then, the yaw slide shaft 903y is fixed to the yaw shaft holding base 921, and the holding base 921 is fixed to the fixed frame 906.

With the above mechanism, the lens holding frame 901, that is, the correction lens 900, can slide in the pitch direction with respect to the intermediate arm 904, and the intermediate arm 904 can slide in the yaw direction with respect to the fixed frame 906. Therefore, the lens holding frame 901 can move in both the pitch and yaw directions with respect to the fixed frame 906.

Thereafter, since the configuration is the same in the p and y directions, p
Only the direction will be described, and the description of the y direction will be omitted.

Next, a driving force generating mechanism of the lens holding frame 901 will be described.

A coil 905p is mounted on the lens holding frame 901, and a magnetic circuit composed of a yoke 907p and a permanent magnet 908p is fixed on the fixed frame 906. Accordingly, by energizing the coil 905p, the lens holding frame 901 is driven in the pitch direction.

Next, a mechanism for detecting the displacement of the lens holding frame 901 will be described.

Hole 909 provided in lens holding frame 901
P is provided with a slit 910p, a condenser lens 911p, and an infrared light emitting diode (hereinafter referred to as IRED) 912p. A light receiver (hereinafter, referred to as PSD) 913 is provided on the fixed frame 906 facing the IRED 912p.
p is provided.

The near-infrared light projected from the IRED 912p passes through the slit 910p and is projected on the PSD 913p, and the PSD 913p outputs a signal corresponding to the position of the light, so that the displacement of the lens holding frame 901 is reduced. Can be detected. Here, when the output of the PSD 913p is amplified by the amplifier 914p and input to the coil 905p through the drive circuit 915p, the lens holding frame 901 is driven and the output of the PSD 913p changes. This becomes a closed system indicated by a solid line, and is stabilized at the point where the output of PSD 913p becomes zero (neutral point). When the output of the shake detection sensor 916p corresponding to the shake amount is added to such a system, the lens holding frame 901 follows the movement with extremely high accuracy using the shake amount as a neutral point, and corrects the image shake. 9
01 (correction lens 900) is driven.

Although image blur correction is performed using such a system, when image blur correction is not performed,
It is necessary to fix (lock) an image blur correction system such as the lens holding frame 901 at a predetermined position electrically or mechanically.
For example, considering that the camera is carried around, if it is not locked, there is no power to control the movement of the image blur correction system in a plane perpendicular to the optical axis, and the image blur compensation system is inadvertently shaken by the vibration caused by carrying. This is because the image blur correction system may move and generate sound due to collision with other surrounding members, and furthermore, damage or destruction of the image blur correction system due to impact may occur.

Conventionally, a method of electrically or mechanically performing such a lock mechanism has been proposed. The method of electrically performing, for example, is to input a constant signal and drive it to a fixed position, but from the viewpoint of power saving,
A mechanical locking method as shown in FIG. 1 is more prevalent than such an electrical method. That is, in FIG.
Reference numeral 21 corresponds to a lock means, and the protrusion 918 is sucked in the direction of the arrow to fit into the recess 917 formed in the lens holding frame 910, and a locked state is established. on the other hand,
By releasing the above suction state, the convex portion 918 is released.
Is released from the concave portion 917 to be in an unlocked state (a state in which anti-vibration control is possible).

In FIG. 1, the signal processing system of the shake detection sensor 916p has been described in a simplified manner. An example of a specific signal processing system is shown in FIG.

An output from the angular velocity sensor 951 corresponding to the shake detection sensor 916p is input to a signal processing circuit 952. In this signal processing circuit 952, first, noise is removed by a low-pass filter LPF, then DC is cut by a high-pass filter HPF, and further, amplification and processing of the low-pass filter AMP & LPF are performed twice. Then, it is taken into the microcomputer 953 and A
/ D conversion.

When the image blur correction operation is not performed, the angular velocity sensor 951 and the signal processing circuit 952 are used to save power.
The power supply of the amplifier inside is turned off, and the control is performed by controlling the switching circuit 954 with the output port of the microcomputer 953.

Also, a PSD 955 (PSD 913 in FIG. 1)
(corresponding to p) is also taken into the microcomputer 953 via the low-pass filter 956, and is similarly A / D converted. Then, the microcomputer 953 performs the field-back operation based on the shake output and the PSD output, outputs a PWM output to the coil driver 957 (corresponding to the drive circuit 915p in FIG. 1), and outputs the coil 958 (the coil 90 in FIG. 1).
5p), the correction lens is driven, and image blur correction is performed.

FIG. 3 is a block diagram showing a circuit configuration of the image blur correction device according to one embodiment of the present invention.

An output from the angular velocity sensor 1 for detecting shake is input to an A / D converter 6 of a microcomputer 5 through a low-pass filter 2 for removing noise, a high-pass filter 3 for cutting DC components, and an amplifier 4. You. Thereafter, the signal is converted into an angular displacement signal via a high-pass filter 7 and an integrator 8. On the other hand, in order to more reliably determine the support state of the camera, the camera is passed through the band-pass filter 9. The band of the band-pass filter is set to a camera shake frequency (usually, the camera shake frequency is about 1 to 15 Hz). Based on the determination signal, the support state determination circuit 10 of the image blur correction apparatus determines whether the camera is in a hand-held state or a state in which the camera is mounted on a tripod or the like. Image blur correction is performed. Then, the output of the position sensor 14 (via the amplifier 13 and the A / D converter 11) for detecting the position of the correction lens is added in reverse polarity and feedback-calculated.
Is output as PWM from the output port, and the correction lens is driven by the coil driver 12 to cancel the image blur.

Reference numeral 15 in the figure denotes a mode setting switch for setting an operation mode, which can set a panning mode. Reference numeral 16 denotes a support state determination operation prohibition circuit that instructs prohibition of the support state determination operation of the image blur correction device by detecting that the operation mode or panning operation of the camera has been performed.

FIGS. 4 to 7 are flowcharts showing specific processing operations in the microcomputer 5 of FIG.

Here, the image blur correction operation is performed by an interrupt process which is generated at regular intervals (for example, 500 μsec). Then, the control in the first direction, for example, the pitch direction (vertical direction) and the control in the second direction, for example, the yaw direction (horizontal direction) are performed alternately, so that the sampling cycle in one direction in this case is 1 msec. When an interrupt occurs, the mine 5 starts the operation from step # 101 in FIG. [Step # 101] It is determined whether the current control direction is pitch or yaw. If it is in the pitch direction, the process proceeds to step # 102, and if it is yaw, the process proceeds to step # 103. [Step # 102] A data address is set so that various flags, coefficients, calculation results, and the like can be read and written as pitch data. [Step # 103] A data address is set so that various flags, coefficients, calculation results, and the like can be read and written as yaw data. [Step # 104] A / D output of the angular velocity sensor 1
The conversion is performed, and the result is stored in a predefined AD_DATA of the RAM. [Step # 105] It is determined whether or not an instruction to start image blur correction has been issued. If the instruction has been issued, step # 1 is performed.
Proceed to 06, and if no instruction has been made, step # 13
Go to 9.

Here, an instruction to start image blur correction has been issued, and the process proceeds to step # 106. [Step # 106] The correction lens is unlocked. This is performed, for example, as described with reference to FIG. [Step # 107] Power is supplied to the angular velocity sensor 1 and the analog signal processing system. [Step # 108] High-pass filter calculation for image stabilization control is performed. [Step # 109] Perform an integral operation for image stabilization control, obtain an image shake angular displacement output, and store it in BURE_DATA. [Step # 110] The mode in which the image blur correction mode setting switch 15 is set is detected. [Step # 111] If the image blur correction mode is set to the panning mode in step # 110, it is considered that a posture change mainly due to the panning operation occurs, and the support state determination of the image blur correction device is not performed.

Here, it is assumed that the panning mode has been set and the process proceeds to step # 112. [Step # 112] A calculation for performing image shake correction control corresponding to panning is performed. Then, step # 135
Proceed to.

On the other hand, if the image blur correction mode is set to a mode other than panning, the process proceeds to step # 113 to start determination of the support state of the image blur correction device [step # 113] A flag indicating whether or not the calculation time for determining the support state has elapsed is determined. Here, it is assumed that the predetermined time has not elapsed from the start of power supply, that is, the determination time elapsed flag is at the low level (meaning low level), and the process proceeds to step # 114. [Step # 114] A timer for measuring time for determining the support state of the image blur correction device is started. [Step # 115] A high-pass filter operation (DC component is quickly removed) for determining the support state of the image blur correction device is performed. However, the signal on which the operation is performed is in step # 1.
AD_DATA (angular velocity signal) stored at step 04. The cutoff frequency of the filter is set to such an extent that camera shake is not removed. [Step # 116] A low-pass filter operation (high-frequency noise removal) for determining the support state of the image blur correction device is performed and stored as a blur signal value HANTEI_DATA. The cutoff frequency of the filter is set to such an extent that camera shake is not removed. [Step # 117] It is determined whether or not the absolute value | HANTEI_DATA | of the shake signal value HANTEI_DATA is equal to or larger than a preset threshold value that is regarded as a panning operation.
If the value is equal to or larger than the threshold value, it is considered that the panning operation has been performed during the determination of the support state of the image blur correction apparatus, and the step #
Go to 118. [Step # 118] The time lapse flag is set to Hi level (meaning high level) in order to stop the support state determination operation of the image blur correction device. Also, the tripod detection flag is set to the Low level. Thereafter, the process proceeds to step # 132.

The absolute value of the shake signal value HANTEI_DATA |
If HANTEI_DATA | is smaller than the threshold value that is regarded as a preset panning operation, the process proceeds to step # 119 to continue the support state determination operation of the image blur correction device. [Step # 119] It is determined whether the determination level to be compared with the shake signal value HANTEI_DATA is positive or negative. Since the time of the first decision not determined the judgment level, it is set in advance either level. Further, it is preferable that the level value is set to be slightly larger than the value output when the camera is mounted on a tripod or the like.
When the judgment level is positive, the process proceeds to step # 120,
If the value is negative, the process proceeds to step # 123.

Here, it is assumed that the comparison determination level is positive, and the process proceeds to step # 120. [Step # 120] Positive judgment level and shake signal value
Compare HANTEI_DATA. If the shake signal value HANTEI_DATA is equal to or more than the plus determination level, the process proceeds to step # 121. If the shake signal value HANTEI_DATA is less than the plus determination level, the process proceeds to step # 121. [Step # 121] Since the shake signal value HANTEI_DATA is equal to or higher than the plus determination level, the counter is incremented. The count value measured here is referred to when determining the support state of the image blur correction device. [Step # 122] The determination level is set to minus, and the process proceeds to Step # 126.

If the comparison judgment level is negative, the process proceeds from step # 119 to step # 123 as described above. [Step # 123] Compare the minus determination level with the shake signal value HANTEI_DATA. Runout signal value HANTEI_DATA
Is less than or equal to the minus determination level, step # 124
Go to step # if greater than the minus judgment level
Go to 126. [Step # 124] Since the shake signal value HANTEI_DATA is equal to or smaller than the minus judgment level, the counter is incremented. The count value measured here is referred to when determining the support state of the image blur correction device. [Step # 125] Set the judgment level to plus,
Proceed to step # 126.

By performing the processing in steps # 119 to # 125, the determination level for determining whether the image blur correction apparatus is mounted on a tripod or in a hand-held state can be provided with a hysteresis. It is possible to reduce the possibility of erroneous determination of the remaining low frequency signal (drift of the shake detection sensor) or an instantaneous noise signal. [Step # 126] It is determined whether a predetermined time has elapsed from the start of power supply, that is, whether a calculation time for determining a support state of the image blur correction device has elapsed.
27, and if not, the process proceeds to step # 132. [Step # 127] Since the predetermined time has elapsed since the start of power supply, the time elapsed flag is set to the Hi level, and the time measurement timer is stopped.

In the following steps # 128 to # 131,
The final determination of the support state of the image blur correction device is performed. The count value counted in step # 121 or # 124 is 2 for the value in the pitch direction control, 2 for the value in the yaw direction.
There are kinds. Normally, when a camera (optical device using an image blur correction device) is used for hand-held shooting, camera shake is present in at least one of the axes at least at least. Therefore, in the hand-held state, the shake signal value (HANT
The count value increases because the number of times that EI_DATA) exceeds the above-described determination level (the camera shake is about 1 to 15 Hz). On the other hand, when the camera is mounted on a tripod, the count value hardly reaches the determination level (there is no camera shake). Since only the small amplitude low frequency drift from the angular velocity sensor exists), the count value is considered to be small. That is, when the shake signal value exceeds the determination level a plurality of times, it is considered that the hand is held.

Here, if the counter value in either the pitch direction or the yaw direction exceeds a predetermined number, it is determined that the hand is held. Conversely, if the counter values in both the pitch direction and the yaw direction are less than a predetermined number, it is determined that the camera is mounted on a tripod. [Step # 128] If the counter value in the pitch direction is equal to or more than a predetermined number, it is determined that the hand is held, and step # 130 is performed.
If it is less than the predetermined number of times, the process proceeds to step # 129 to determine in the other axis direction, and the determination is made in the other axis direction. [Step # 129] If the counter value in the yaw direction is equal to or more than the predetermined number, it is determined that the hand is held, and the process proceeds to Step # 130. If the counter value is less than the predetermined number, it is determined that the device is mounted on a tripod and the process proceeds to Step # 131. [Step # 130] Since the image blur correction device is in a hand-held state, the tripod detection flag is set to the Low level. [Step # 131] Since the image blur correction device is mounted on a tripod, the tripod detection flag is set to Hi level.
The actual control characteristics are determined to be image blur correction characteristics that reduce adverse effects (for example, low-frequency drift from the sensor) that occur when the tripod is mounted. For example, by raising the cut-off frequency of the high-pass filter to the high frequency side,
By cutting the low-frequency signal or raising the integration band to the higher frequency side, it is conceivable to reduce the time constant to reduce the influence of the erroneous signal. [Step # 132] It is determined whether the tripod detection flag is at the Hi level. Step # 1 if Hi level
33, and if it is at the Low level, the process proceeds to step # 134. [Step # 133] Perform calculation settings for performing image shake correction control corresponding to when the image shake correction apparatus is mounted on a tripod. [Step # 134] Calculation settings for performing image blur correction control corresponding to when the image blur correction apparatus is in a hand-held state are performed. [Step # 135] The output of the position sensor 14 for detecting the position of the correction lens is captured, A / D converted, and PSD_DA
Store as TA. [Step # 136] Feedback operation "BURE_DAT"
A -PSD_DATA ". [Step # 137] A phase compensation operation is performed to make a stable control system. [Step # 138] Perform PWM output to the coil driver 14. As a result, image stabilization control is performed, and image shake is corrected.

If the instruction to start image blur correction has not been issued in step # 105, the process proceeds to step # 139 as described above. [Step # 139] The correcting lens is locked. This is performed, for example, as described with reference to FIG. [Step # 140] Power supply to the angular velocity sensor 1 and the analog signal processing system is stopped. [Step # 141] Since the image blur correction is not performed, the initialization of the high-pass filter and the integration operation is performed.

According to the above embodiment, the image blur correction mode setting switch 1 for setting a plurality of image blur correction modes.
According to 5, when the image blur correction mode is set to the panning mode, the support state determination operation is prohibited. Therefore, depending on the set operation mode, there is little need for the image blur correction device. The calculation for determining the support state can be omitted, and the calculation can be made more efficient.

Further, during the support state determination operation, the support state determination operation is prohibited as soon as the output signal of the shake detection sensor becomes equal to or more than the threshold value. The calculation for the determination can be omitted, and the efficiency of the calculation can be improved.

(Correspondence between the Invention and the Embodiment) In the above embodiment, the support state determination circuit 10 corresponds to the support state determination means of the present invention,
The portions that perform the operations # 2, # 133, and # 134 correspond to the image blur correction characteristic setting means of the present invention, and the support state determination operation inhibiting circuit 16 corresponds to the support state determination operation control means of the present invention.

(Modification) In this embodiment, an example in which the image blur correction device is incorporated in an interchangeable lens of a single-lens reflex camera has been described. However, the image stabilizer is not provided in the interchangeable lens, but is provided between the camera and the lens like an extender. It may be in the form of an accessory that fits in an adapter that fits in or a conversion lens that is mounted in front of the interchangeable lens. Further, the present invention may be applied to an integrated camera in which a lens body and a camera body are integrated. Furthermore, the present invention can be applied to other optical devices and other devices.

In this embodiment, an example is shown in which an angular velocity sensor is used as the shake sensor. However, an angular acceleration sensor, an acceleration sensor, a speed sensor, an angular displacement sensor,
A displacement sensor, and a method of detecting image blur itself,
Any means may be used as long as the shake can be detected.

In the present invention, a shift optical system for moving an optical member in a plane perpendicular to the optical axis is used as an example of a correction system. Any device that can correct image blur, such as a device that moves a shooting screen within the camera, may be used.

[0051]

As described above, according to the present invention,
An object of the present invention is to provide an image blur correction apparatus capable of preventing a wasteful calculation of whether a device equipped with the image blur correction apparatus is used by being installed on a fixed member.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration inside an interchangeable lens of a single-lens reflex camera equipped with an image blur correction device according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a circuit configuration of a signal processing system of the image blur correction device of FIG.

FIG. 3 is a block diagram illustrating a circuit configuration of the image blur correction device according to the first embodiment of the present invention.

FIG. 4 is a flowchart showing a part of the operation of the image blur correction device according to the first embodiment of the present invention.

FIG. 5 is a flowchart showing a continuation of the operation in FIG. 4;

FIG. 6 is a flowchart showing a continuation of the operation in FIG. 5;

FIG. 7 is a flowchart showing a continuation of the operation in FIG. 6;

[Explanation of symbols]

 Reference Signs List 1 angular velocity sensor 2 low-pass filter 4 amplifier 5 microcomputer 10 support state determination circuit 12 coil driver 14 correction lens position sensor 15 image blur correction mode setting switch 16 support state determination operation prohibition circuit

Claims (8)

[Claims] 1. A supporting state determining means for determining whether an apparatus equipped with the image blur correcting device is used by being mounted on a fixed member by calculating a shake signal from a vibration detecting means, and the supporting state An image blur correction characteristic setting unit configured to set any one of a plurality of different image blur correction characteristics from a determination result by the determination unit; a shake signal from the vibration detection unit; and the set image blur correction An image blur correction device that drives an optical axis decentering device based on characteristics and performs image blur correction; a support state determination operation for setting whether to perform the operation of the support state determination device. An image blur correction device comprising a control unit. 2. The support state determination operation control means, when detecting that the device is being used while being continuously moved in a certain direction, inhibits the operation of the support state determination means. The image blur correction device according to claim 1, wherein: 3. The image blur correction device according to claim 1, wherein the device on which the image blur correction device is mounted is an optical device. 4. The image blur correction device according to claim 3, wherein the optical apparatus has a setting member capable of setting a plurality of image blur correction modes. 5. The image blur correction device according to claim 3, wherein said support state determination operation control means inhibits the operation of said support state determination means in an image blur correction mode set by said setting member. apparatus. 6. The support state determination operation control means, when detecting that the image blur correction mode of the optical apparatus is a panning mode, inhibits the operation of the support state determination means. The image blur correction device according to claim 3. 7. The support state determination operation control means, if the shake signal from the vibration detection means becomes a predetermined value or more during the support state determination operation by the support state determination means, immediately. 4. The image blur correction device according to claim 3, wherein the operation is prohibited. 8. The image blur correction apparatus according to claim 5, wherein a shake signal from said vibration detection means becomes a predetermined value or more by performing a panning operation.