JPH1039359A - Camera provided with hand shake correcting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a camera provided with a hand shake correcting device, reduced in weight and size, with a small number of parts. SOLUTION: An X-axis actuator 10 and a Y-axis actuator 20 for driving a correcting lens for correcting a hand shake are controlled by a CPU 52 and a shutter unit 60 for driving a shutter is controlled by a CPU 51. The shutter unit 60 and the actuators 10 and 20 are connected to a common power source 59. When a shutter button SH is operated, the CPU 51 actuates the shutter unit 60, to open the shutter. The opened state of the shutter is kept without supplying power, so that the power source is switched to the actuators 10 and 20, to actuate them based on the signal of a hand shake detecting sensor 58 and drive the correcting lens. At the time of executing the closing operation of the shutter, the power source is switched to the shutter unit 60 from the actuators 10 and 20, to close the shutter.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera provided with a camera shake correction device, and more particularly to a camera provided with a camera shake correction device using an actuator using an electromechanical transducer for driving a camera shake correction lens.

[0002]

2. Description of the Related Art Conventionally, as means for correcting image blur on an image forming surface due to camera shake caused during camera photographing, two correction lenses disposed immediately after a stop of a photographing lens are arranged in the optical axis direction. There is known an image stabilizing optical system that is driven eccentrically in a plane orthogonal to the plane. In the lens device provided with the vibration proof optical system, a dedicated driving mechanism for driving the correction lens in a predetermined direction is incorporated in the lens device.

[0003] As a mechanism for driving the correction lens of the above-described vibration proof optical system, a drive mechanism including a DC motor and a gear reduction mechanism has conventionally been adopted. In such a configuration, the motor is used. Not only is it large, but also the gear reduction mechanism occupies a large space because it incorporates a mechanism that eliminates backlash. For this reason, there has been a disadvantage that noise is generated during operation and the quality of the product is degraded. Therefore, the applicant has previously proposed a correction lens driving mechanism using an actuator using a piezoelectric element as a driving source (Japanese Patent Application No. Hei 10-26138). 6-200269).

FIG. 13 is a perspective view showing the construction of the above-mentioned correction lens driving mechanism. The actuator 122 for eccentrically moving the first lens unit L1 is parallel to the X-axis direction, and the second lens unit L2 is eccentric. The actuator 123 to be moved is arranged parallel to the Y-axis direction. Actuator 122 and actuator 123 have the same configuration, and
2 (142), the drive shaft 131 (141), and the drive shaft 131 (14) integrally formed with the lens holding frame 112 (113).
It is composed of a coupling portion 112a (113a) that frictionally couples with 1), a pad 112c (113c), a leaf spring 112d (113d) for adjusting the friction coupling force, and the like.

The position of the first lens unit L1 in the X-axis direction is detected by an X-axis position sensor 135 attached to the lens holding frame 112, and the position of the second lens unit L2 in the Y-axis direction is a lens. It is detected by a Y-axis direction position sensor 145 attached to the holding frame 113. The X-axis direction position sensor 135 and the Y-axis direction position sensor 145 include a known position sensor, for example, a magnetized rod 136 (146) magnetized at a predetermined interval on an extension of a lens barrel (not shown).
(141) and the magnetized rod 136 (14
A magnetoresistive sensor that detects the magnetism of 6) with a sensor 135 (145) made of a magnetoresistive element attached to the lens holding frame 112 (113) can be used. In addition, various position sensors can be used.

Next, referring to FIG.
2, the first lens unit L1 and the actuator 123
Will be described for driving the second lens unit L2.

The amount of camera shake calculated from the output of a camera shake sensor (not shown), for example, the camera shake sensor for detecting the acceleration in the X-axis and Y-axis directions of the camera, and the amount of drive of the correction lens based on the lens position detected by the position sensor are determined. Calculate and apply a driving pulse to the piezoelectric element of the actuator based on the calculated driving amount to drive the correction lens.

For example, when a drive pulse having a waveform consisting of a gentle rising portion as shown in FIG. 14 and a rapid falling portion following it is applied to the piezoelectric element 132 of the actuator 122, a gentle rising portion of the driving pulse is obtained. In this case, the piezoelectric element 132 gradually expands in the thickness direction, and the drive shaft 131 is displaced in the direction indicated by the arrow a. Therefore, the lens holding frame 112 frictionally coupled to the drive shaft 131 at the coupling portion 112a also moves in the direction of arrow a, and the first lens unit L
1 is displaced in the positive X-axis direction indicated by arrow a.

At the rapid falling portion of the drive pulse, the piezoelectric element 132 rapidly contracts in the thickness direction, and the drive shaft 131 is also displaced in the direction opposite to the arrow a. At this time, the lens holding frame 112 frictionally coupled to the drive shaft 131 at the coupling portion 112a overcomes the frictional coupling force with the drive shaft 131 due to its inertial force and substantially stays at that position. Does not move.

[0010] The term "substantially" used herein means that the lens holding frame 1 is located in both the direction of arrow a and the direction opposite thereto.
12 and slides between the drive shaft 131 and the drive shaft 131, and as a whole, the arrow a
It is meant to include those that move in the direction. The type of movement is determined according to a given friction condition.

By continuously applying the driving pulse having the above-mentioned waveform to the piezoelectric element 132, the first lens unit L1
It can be moved continuously in the positive axis direction.

When the first lens unit L1 is moved in the negative direction of the X axis, that is, in the direction opposite to the arrow a, a drive pulse having a waveform consisting of a rapid rising portion and a gentle falling portion following the rising portion is applied to the piezoelectric element. 132 can be achieved.

The driving of the second lens unit L2 by the actuator 123 is exactly the same.
By applying the voltage to the 23 piezoelectric elements 142, the second lens unit L2 can be displaced in the Y-axis direction (positive / negative direction) indicated by the arrow b.

[0014]

The above-described correction lens driving mechanism using an actuator using a piezoelectric element as a driving source has a large space such as a driving mechanism including a DC motor and a gear reduction mechanism. The lens barrel can be made compact and lightweight without occupying the lens, and it has excellent performance such as no noise generated during operation, but the number of parts is further reduced, and Small things were required. An object of the present invention is to solve the above problems.

[0015]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and drives a lens driving means based on lens position correction information corresponding to the amount of camera shake of a camera. In a camera provided with a camera shake correction device for controlling the position of a movably disposed correction lens, a shutter driving unit for opening and closing the shutter, a power supply for supplying power to the lens driving unit and the shutter driving unit, and a lens driving unit Control means for controlling the supply of power to the shutter driving means, wherein the control means supplies power to the lens driving means at a time when the shutter is in an open state and supply of power to the shutter driving means can be stopped. Is performed.

The control means starts supplying power to the shutter driving means when the shutter button is operated, and supplies power to the shutter driving means after the shutter is opened to a predetermined opening position. It is preferable to stop the motor and supply power to the lens driving unit.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In a camera anti-vibration optical system according to an embodiment of the present invention, one correction lens L is disposed in a taking lens, and this correction lens L is perpendicular to the optical axis direction. It is configured to be eccentric on a flat surface.

The driving mechanism of the correction lens L will be described. FIG.
As shown in FIG. 6, an X-axis actuator 10 and a Y-axis actuator 20 are arranged on the underframe 1. One ends of the piezoelectric elements 11 and 21 of the actuators 10 and 20 are
Each of the piezoelectric elements 11 and 2 is bonded and fixed to a plane parallel to the Y-axis direction and the X-axis direction of the support block 3 on the underframe 1.
Driving shafts 13 and 23 are adhesively fixed to the other end, and the driving shafts 13 and 23 are movably supported by blocks 12 and 22, respectively, in a direction parallel to the X axis and a direction parallel to the Y axis.

According to the present invention, the shutter drive mechanism for opening and closing the shutter and the X-axis actuator 10 and the Y-axis actuator 20 constituting the correction lens drive mechanism are connected to a common power source, and the shutter drive mechanism is provided. And a control circuit for controlling the correction lens driving mechanism starts power supply to the shutter driving mechanism when the shutter button is operated, and supplies power to the shutter driving mechanism after the shutter is opened to a predetermined opening position. Is stopped and power is supplied to the correction lens driving mechanism. Further, when it is time to close the shutter, power supply to the correction lens driving mechanism is stopped,
The power supply to the shutter drive mechanism is started again to control the shutter to close.

With this configuration, a single power source can be used, and a power source having a small current capacity can be used since the correction lens driving mechanism and the shutter driving mechanism do not operate simultaneously. The number of points can be reduced and the power supply space inside the camera can be reduced.

[0021]

Embodiments of the present invention will be described below.
FIG. 1 is a perspective view showing the structure of a camera shake correction apparatus according to the present invention, FIG. 2 is a front view thereof, FIG. 3 is a front view showing a lens barrel of a correction lens L, and FIG. 5 is a sectional view taken along line BB of FIG. 2, and FIG. 6 is a sectional view of FIG.
FIG. 2 is an enlarged sectional view of a main part of the X-axis actuator 10 in FIG. 1 to 6, reference numeral 1 denotes an underframe for supporting a driving mechanism of the correction lens, and an opening 1a is provided in a central portion thereof. Reference numeral 2 denotes a lens barrel of the correction lens L, which is located at an opening 1a in the center of the underframe 1, and is moved with respect to the optical axis (Z-axis) by an X-axis actuator 10 and a Y-axis actuator 20, which will be described later. It is supported movably on a vertical plane in the X-axis direction and the Y-axis direction. Provided on the underframe 1 is a support block 3 to which the piezoelectric elements of the X-axis actuator 10 and the Y-axis actuator 20 are adhered and fixed.

The underframe 1 is arranged in a lens barrel (not shown). When the underframe 1 is moved in the optical axis direction, the underframe 1 is moved in the optical axis direction while regulating the position of the underframe 1 with respect to the optical axis.
A focus guide shaft 4 arranged parallel to the optical axis is disposed in the lens barrel, and a hole 3a through which the focus guide shaft 4 penetrates is provided in the support block 3.

As is apparent from FIG. 3, the lens barrel 2 of the correction lens L has three radially extending arms 2a, 2b, 2a, 2b, 2c in order to hold the position of the lens barrel 2 with respect to the underframe 1. 2c
Are formed. As is apparent from FIG. 4, the arms 2a, 2b, and 2c are provided with protrusions 2p and 2q on the front and back surfaces thereof, respectively. When the rubber members 2a, 2b, and 2c are pressed toward the underframe 1, the protrusions 2p and 2q
And the pressing plate 5, and the position of the lens barrel 2 with respect to the underframe 1 can be maintained. A slight inclination of the lens barrel 2 with respect to the underframe 1 can be corrected by adjusting the height of the projection 2p.

Next, the X-axis actuator 10 and the Y-axis actuator 20 will be described. First, the X-axis actier
The operation will be described from the data 10. X is attached to the support block 3 on the underframe 1.
One end of the piezoelectric element 11 of the shaft actuator 10 is bonded and fixed, and the other end of the piezoelectric element 11 is bonded and fixed to a drive shaft 13. One end of the drive shaft 13 is in a direction parallel to the X axis by a block 12. It is movably supported. Drive shaft 13
, The frictional coupling portion 14a of the moving member 14 is frictionally coupled with an appropriate frictional force so as to be movable in a direction parallel to the X axis. The extension 14b extended from the moving member 14 is engaged with a groove 15a extending in a direction parallel to the Y axis of the operation member 15 formed in the lens barrel 2 of the correction lens L, and is attached to the operation member 15. It is pressed by a spring 16. The pressing force of the urging spring 16 against the extension portion 14b is set to be sufficiently larger than the force of the moving member 14 moving in the X-axis direction.

Since the extension 14b is movable in the Y-axis direction by engaging with the groove 15a of the action member 15, the correction lens L
When the lens barrel 2 moves in the Y-axis direction, the extension portion 14b moves on the groove of the action member 15 in the Y-axis direction, and does not hinder the movement of the lens barrel 2 in the Y-axis direction.

Referring to FIGS. 4 and 5, an extension 14b of the moving member 14 in the X-axis actuator 10 described above.
The structure of the portion of the action member 15 which is engaged with the groove 15a can be clearly understood. The X-axis actuator 10 in FIG.
Referring to FIG. 6 which is an enlarged view of a main part of FIG. 6 and shows a partially cut-out cross section, an extension 14 b extended from the moving member 14 has a groove 15 of an action member 15 formed in the lens barrel 2 of the correction lens L.
a, the state in which the extension portion 14b is pressed against the action member 15 by the urging spring 16 can be clearly seen.

Next, the Y-axis actuator 20 will be described. One end of a piezoelectric element 21 of a Y-axis actuator 20 is adhered and fixed to a support block 3 on the underframe 1.
A drive shaft 23 is adhesively fixed to the other end of the drive shaft 23. One end of the drive shaft 23 is supported by a block 22 so as to be movable in a direction parallel to the Y axis.

The configuration of the Y-axis actuator 20 described below is the same as the configuration of the X-axis actuator 10, and although some parts are not shown in the drawing, each member in the drawings for explaining the X-axis actuator is illustrated. Please read the code numbers in the 20s and understand.

A friction coupling portion 24a of a moving member 24 is frictionally coupled to the drive shaft 23 with an appropriate frictional force so as to be movable in a direction parallel to the Y axis. The extension 24b extended from the moving member 24 engages with a groove 25a extending in a direction parallel to the X axis of an operation member 25 formed in the lens barrel 2 of the correction lens L, and is attached to the operation member 25. It is pressed by the urging spring 26. The pressing force of the urging spring 26 against the extension 24b is set to be sufficiently larger than the force of the moving member 24 moving in the Y-axis direction.

Since the extension 24b is movable in the X-axis direction by engaging with the groove of the operation member 25, when the barrel 2 of the correction lens L moves in the X-axis direction, the extension 24b is On the groove 25a in the X-axis direction, and does not hinder the movement of the lens barrel 2 in the X-axis direction.

Next, the operation will be described with reference to FIG. X
Since the axis actuator 10 and the Y axis actuator 20 have substantially the same configuration, the operation of the X axis actuator 10 will be described here, and the description of the operation of the Y axis actuator 20 will be omitted. .

When a drive pulse having a waveform composed of a gentle rising portion and a rapid falling portion as shown in FIG. 14 is applied to the piezoelectric element 11, the piezoelectric element 11 becomes gentle at the gentle rising portion of the driving pulse. The drive shaft 13 is displaced in the direction indicated by the arrow a. Therefore, the moving member 14 frictionally coupled to the drive shaft 13 at the friction coupling portion 14a and the extension 14b thereof also move in the direction of arrow a. The extension portion 14b and the operating member 15 are pressed against each other by the urging spring 16, and the pressing force is set sufficiently larger than the force of the moving member 14 to move in the axial direction. The lens barrel 2 of the correction lens L coupled to the operating member 15 moves in the direction of the arrow a (here, the positive direction of the X-axis) because it moves together with the member 15 in the direction of the arrow a.

At the rapid falling portion of the drive pulse, the piezoelectric element 11 rapidly contracts in the thickness direction, and the drive shaft 13 is also displaced in the direction opposite to the arrow a. At this time, the moving member 1 frictionally coupled to the drive shaft 13 by the friction coupling portion 14a.
4 and its extension 14b are connected to the drive shaft 1 by its inertia.
The lens barrel 2 of the correction lens L does not move because it overcomes the frictional coupling force between the lens 3 and the lens 3 and remains substantially at that position.

The term “substantially” as used herein means that, in both the direction of the arrow a and the direction opposite thereto, the drive shaft 13 and the moving member 14 follow each other while slipping, and the difference in the drive time is reduced. Therefore, it includes that which moves in the direction of arrow a as a whole. What kind of movement will be
Determined according to given friction conditions.

By continuously applying the drive pulse having the above waveform to the piezoelectric element 11, the correction lens L can be continuously moved in the positive direction of the X axis. Correction lens L is X
The movement in the negative axis direction can be achieved by applying a drive pulse having a waveform composed of a rapid rising portion and a gentle falling portion following the rising portion to the piezoelectric element 11.

The Y-axis actuator 20 operates in the same manner as the X-axis actuator 10, and can continuously move the correction lens L in the Y-axis direction.

The moving member 14 (same for the moving member 24)
In the above-described configuration, as shown in FIG. 7, the friction coupling portion 14a and the extension portion 14b are formed from one sheet of an elastic material such as metal. In particular, the friction coupling portion 14a has a diameter smaller than the diameter of the drive shaft 13 and is a substantially cylindrical type (C type) having an open part.
The friction coupling portion is formed by forming a cross section, and is configured to be frictionally coupled to the drive shaft 13 by its own elastic force. However, in addition to the above-described configuration, the friction coupling portion 14a of the moving member 14 may have a triangular cross section as shown in FIG. 8 or a rectangular cross section as shown in FIG. 9 and may be frictionally coupled by its own elastic force. Good.

For the position of the correction lens L to be moved in the X-axis direction and the Y-axis direction for camera shake correction, a known magnetoresistive sensor or the like described in the conventional example can be used. In this embodiment, the correction lens is used. LED (light emitting die-)
And the light projected from the LED is detected by a two-dimensional PSD (photo diode) mounted on the underframe 1, and the position of the correction lens L in the X-axis direction and the Y-axis direction is detected. A lens position detection sensor was used. Thereby, the number of parts can be reduced and the configuration can be simplified.

Further, a camera shake detection sensor is provided in the camera, and is configured to detect the amount of camera shake occurring in the camera. The camera shake detection sensor is configured by an acceleration sensor that detects accelerations Ax and Ay in the X-axis direction and the Y-axis direction of the camera, and the detected accelerations Ax and Ay are integrated twice by the CPU 52 that controls camera shake correction described below. Thus, the camera shake amounts Mx and My can be detected.

Next, the control circuit will be described. FIG.
FIG. 3 is a block diagram of a control circuit 50 for driving a camera shutter and performing camera shake correction using a correction lens. The control circuit 50 includes a CPU 51 for controlling the drive of the shutter,
Shutter button S connected to the input port of PU51
H and a shutter unit 60 connected to the output port
Is provided.

Further, the control circuit 50 includes a CPU 52 for controlling camera shake correction by a correction lens, and a lens position detecting sensor 57 for detecting the position of the lens connected to the input port of the CPU 52 in the X-axis direction and the Y-axis direction. , And a camera shake detection sensor 58 for detecting a camera shake amount, a CPU 52
A driving pulse generator 53 and a switching unit 56 are connected to the output ports of the above. The drive pulse generator 53
Is composed of a waveform generator 54 and a booster 55, and a switching unit 56 has an X-axis actuator 10 and a Y-axis actuator.
Data 20 is connected. The CPU 51 and the CPU 52 are connected so that signals can be exchanged with each other. The control circuit 50 is provided with one power supply 59, and includes a shutter unit 60, an X-axis actuator 10, and a Y-axis actuator 2.
Numeral 0 is configured so that power is supplied from this one power source and driven.

Next, the control operation of the control circuit 50 will be described with reference to FIG.
This will be described with reference to the block diagram of the control circuit shown in FIG. When receiving a shutter signal indicating the operation of the shutter button SH of the camera (not shown), the CPU 51 drives and controls a stepping motor (not shown) of the shutter unit 60 to open the shutter from an initial state to a predetermined set opening position (step P1, See FIG. 11). Since the open state of the shutter can be maintained by the stopping torque of the stepping motor, the supply of power to the stepping motor is stopped after the shutter is opened (step P).
2), a driving pulse generator 53 for driving the correction lens
And an X-axis actuator and Y through a switching section 56.
Electric power is supplied to the shaft actuator (step P3).

After the shutter is kept open for a time corresponding to the exposure amount, the X-axis actuator and the Y-axis actuator are maintained.
The supply of power to the shutter unit is stopped (step P4), the supply of power to the shutter unit 60 is restarted, and the stepping motor is driven to close the shutter (step P5).

Next, control of camera shake correction by the CPU 52 will be described. When a signal indicating accelerations Ax and Ay in the X-axis direction and the Y-axis direction output from a camera shake detection sensor 58 installed in a camera (not shown) is input, the CPU 52 integrates the input accelerations Ax and Ay twice. Then, the camera shake amounts Mx and My and their directions are determined (Step P11, see FIG. 12).

Next, based on the determined camera shake amounts Mx and My and their directions and lens position correction information such as the lens position output from the lens position detection sensor 57, the correction lens in the X-axis direction and the Y-axis direction is obtained. The driving amount is calculated (Step P12), and the ratio of the driving time of the X-axis actuator to the Y-axis actuator is determined (Step P13).

The waveform generator 54 of the drive pulse generator 53 is operated to determine an appropriate drive pulse waveform based on the amount of drive in the X-axis direction and the drive direction, and instruct the booster 55 to output the waveform (step P14). ). Further, the switching section 56 is operated to switch the driving pulse output from the boosting section 55 to output to the X-axis actuator 10, and the X-axis actuator 1 is switched based on the previously determined driving time ratio.
0 (Step P15), and after the drive time has elapsed, the switching unit 56 is operated, and the X-axis and Y-
The shaft actuator is disconnected (step P16).

The waveform generator 54 is operated to determine an appropriate drive pulse waveform based on the drive amount and drive direction in the Y-axis direction, and instruct the booster 55 to output the waveform (step P1).
7). Further, the switching unit 56 is operated, and the driving pulse output from the boosting unit 55 is applied to the Y-axis actuator 20.
And drives the Y-axis actuator 20 based on the previously determined ratio of the driving time (step P).
18) After the lapse of the driving time, the switching unit 56 is operated to disconnect the X-axis and Y-axis actuators from the boosting unit 55 (step P19).

While the camera shutter is open, the processing from the detection of the camera shake amount to the driving of the actuator is repeated at high speed until the camera shake amounts Mx and My become zero (step P20), and the correction lens is moved. The image is prevented from being blurred on the film surface by being displaced at high speed in the direction in which the amount of camera shake is corrected.

According to the control circuit described above, a single power supply can be used for driving the correction lens and the shutter, and a circuit for driving the X-axis actuator and the Y-axis actuator. Can be shared, the number of circuit components can be reduced, and the current capacity of the battery can be reduced, so that the layout space inside the camera can be saved.

[0050]

As described above, according to the present invention, the lens driving means is driven based on the lens position correction information corresponding to the camera shake amount, and is arranged so as to be movable in a plane perpendicular to the optical axis. In a camera equipped with a camera shake correction device for controlling the position of a correction lens, a shutter driving unit for opening and closing the shutter, a power supply for supplying power to the lens driving unit and the shutter driving unit, and a lens driving unit and a shutter driving unit. Control means for controlling the supply of electric power to the lens drive means when the shutter is in the open state and the supply of electric power to the shutter drive means can be stopped. It is characterized by the following. As a result, a single power source can be used, and since the correction lens driving unit and the shutter driving unit do not operate at the same time, a power source with a small current capacity can be used, and the number of parts can be reduced. In addition, the power supply space inside the camera can be reduced, and this has a remarkable effect in reducing the size and weight.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the configuration of a camera shake correction device.

FIG. 2 is a front view of the correction lens driving mechanism shown in FIG.

FIG. 3 is a front view showing a lens barrel of the correction lens shown in FIG. 1;

FIG. 4 is a sectional view taken along the line AA in FIG. 2;

FIG. 5 is a sectional view taken along the line BB of FIG. 2;

FIG. 6 is an enlarged front view of a main part of the X-axis actuator in FIG. 2;

FIG. 7 is a perspective view illustrating a configuration of a frictional coupling portion of the moving member.

FIG. 8 is a perspective view (part 1) illustrating another example of the configuration of the frictional coupling portion of the moving member.

FIG. 9 is a perspective view (part 2) illustrating another example of the configuration of the friction coupling portion of the moving member.

FIG. 10 is a block diagram of a control circuit.

FIG. 11 is a flowchart for explaining a control operation of the control circuit.
To (part 1).

FIG. 12 is a flowchart for explaining the control operation of the control circuit.
To (Part 2).

FIG. 13 is a perspective view illustrating the configuration of a conventional camera shake correction apparatus.

FIG. 14 is a diagram illustrating an example of a waveform of a drive pulse applied to an electromechanical transducer.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Underframe 2 Lens barrel 3 Support block 4 Focus guide shaft 10 X-axis actuator 20 Y-axis actuator 11, 21 Piezoelectric element 13, 23 Drive shaft 14, 24 Moving member 14a, 24a Friction coupling portion 14b, 24b Extension unit 15, 25 Working member 50 Control circuit 51, 52 CPU 53 Drive pulse generation unit 54 Waveform generation unit 55 Boosting unit 56 Switching unit 57 Lens position detection sensor 58 Camera shake detection sensor 59 Power supply 60 Shutter unit L Correction lens SH Shutter button

Claims (2)

[Claims] 1. A camera-shake correction unit that drives a lens driving unit based on lens position correction information corresponding to a camera-shake amount and controls a position of a correction lens movably disposed on a plane perpendicular to an optical axis. A camera having a device, a shutter driving means for opening and closing the shutter, a power supply for supplying power to the lens driving means and the shutter driving means, and a control means for controlling the supply of power to the lens driving means and the shutter driving means. Wherein the control means controls the supply of electric power to the lens driving means at a time when the shutter is in the open state and the supply of electric power to the shutter driving means can be stopped. Camera. 2. The control means starts supplying power to the shutter driving means when the shutter button is operated, and stops supplying power to the shutter driving means after the shutter is opened to a predetermined opening position. 2. The camera according to claim 1, wherein the camera is controlled to supply power to the lens driving unit.