JPH08328065A - Photographing device and lens device provided with shake correction mechanism - Google Patents

Abstract

PURPOSE: To drive a shake correction mechanism in exact timing by deciding the starting timing of the shake correction mechanism, based on shake information at the time before starting exposure control. CONSTITUTION: The time (time t2 - time t1 ) from receiving a shake correction instruction (time t1 ) till starting shake correction control (time t2 ) is calculated based on the time Tstart (time t3 - time t1 ) till starting shake correction transferred from a body device and the calculated result Tjs (time t3 - time t2 ), and the starting timing of the shake correction mechanism is decided in the timing (time t2 ) much earlier than exposure control start timing (time t3 ) so as to start the shake correction control. At the time t3 , target shake control speed matches with control speed. Therefore, the driving speed of the shake correction mechanism is matched with or approximated enough to the target driving speed at the time of starting film exposure, so that the shake correction control of the shake correction mechanism is performed with high accuracy.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photographing device and a lens device having a shake correcting mechanism.

[0002]

2. Description of the Related Art In recent years, for example, in a photographing device such as a camera
The F mechanism has become common, and it has been proposed to equip it with a shake correction mechanism that corrects image shake caused by camera shake during shooting.

For example, in Japanese Patent Laid-Open No. 2-66535, as an example of a single lens optical system, a shake correction mechanism that detects an angular variation of an optical axis caused by camera shake or the like and corrects a picked-up image based on this is provided. Japanese Patent Application Laid-Open No. 2-183217 proposes a shake correction mechanism that performs shake correction by shifting a part of a photographing optical system of an internal focusing type telephoto lens.

[0004]

However, in the shake correction mechanism described above, the timing at which the shake correction mechanism is activated is
Regardless of the waveform of the shake, it was determined that the lens device has received a signal from the body device for a certain period of time.For example, the target movement speed or target movement acceleration of the shake correction mechanism is large because the amplitude of the shake is large. When it is necessary to set a relatively large value, at the start of exposure of the film, it is not possible to obtain an appropriate movement speed of the shake correction mechanism and a correction delay occurs, so high-precision shake correction control must be performed. I couldn't.

In order to correct such a defect and obtain an appropriate moving speed at the time of starting the exposure of the film, it is necessary to start the shake correction control earlier than the start timing of the exposure control of the film by a necessary time or more. Can also be considered.

However, if the shake correction control is started considerably early with respect to the start timing of the exposure control of the film, the shake correction mechanism moves to the peripheral portion of the operation range at the start of the exposure of the film, and the operation of the shake correction mechanism occurs. The entire range cannot be effectively used, and highly accurate shake correction control cannot be performed.

The object of the present invention is to solve the above-mentioned problems,
It is possible to determine the optimum start timing of the shake correction control for the image pickup apparatus and the lens device including the shake correction mechanism.

[0008]

In order to solve the above-mentioned problems, the present invention according to claim 1 is a shake correction which detects a shake and relatively moves a part or all of a photographing optical system and a photographing screen. An image pickup apparatus having a mechanism for correcting shake by matching or approaching the shake speed and the movement speed of the shake correction mechanism at the start of exposure control, and the shake correction is performed based on shake information at a time before the start of exposure control. It is characterized by comprising a control device for determining the activation timing of the mechanism.

According to a second aspect of the present invention, in the image pickup apparatus having the shake correcting mechanism according to the first aspect, the control device determines either or both of the target moving speed and the target moving acceleration of the shake correcting mechanism. .

The invention of claim 3 is the same as claim 1 or claim 2.
In the image pickup apparatus including the shake correction mechanism, the shake information is at least one kind selected from the group consisting of the speed, acceleration, and displacement of the shake.

According to a fourth aspect of the present invention, in the image pickup apparatus including the shake correction mechanism according to any one of the first to third aspects, the control device performs fuzzy control when determining the activation timing of the shake correction mechanism. Characterize.

According to a fifth aspect of the present invention, in the image pickup apparatus including the shake correction mechanism according to any one of the first to fourth aspects, the time before the exposure control is started is when the shake correction command is received by the shake correction mechanism. Is characterized by.

According to a sixth aspect of the present invention, there is provided a lens device for matching or approaching a speed of shake generated at the start of exposure control of a combined body device and a moving speed of a shake correction mechanism attached to the lens device. It is characterized by further comprising a control device that determines a start timing of the shake correction mechanism before the exposure control is started based on shake information detected at a time before the start of the control.

According to a seventh aspect of the present invention, in the lens apparatus according to the sixth aspect, the control device determines a target moving speed and / or a target moving acceleration of the shake correction mechanism.

The invention of claim 8 is claim 6 or claim 7.
In the lens device described in (1), the shake information is at least one kind selected from the group consisting of a speed, an acceleration, and a displacement amount of the shake.

According to a ninth aspect of the present invention, in the lens apparatus according to any one of the sixth to eighth aspects, the control device performs fuzzy control when determining the activation timing of the shake correction mechanism. .

According to a tenth aspect of the present invention, in the lens apparatus according to any one of the sixth to ninth aspects, the time before the start of the exposure control is when a shake correction command is received by the shake correction mechanism. And

[0018]

According to the photographing apparatus having the shake correction mechanism of the first aspect, since the control apparatus determines the start timing of the shake correction mechanism based on the shake information at the time before the start of the exposure control, various shake information is provided. Based on the above, the shake correction mechanism is driven at an accurate timing.

According to the image-taking apparatus having the shake correcting mechanism of the second aspect, the control device of the image-taking apparatus according to the first aspect determines both or one of the target moving speed and the target moving acceleration of the shake correcting mechanism. The shake correction mechanism is driven at an appropriate timing and speed based on the shake information.

According to the photographing apparatus having the shake correcting mechanism of claim 3, the shake information used by the controller of the photographing apparatus having the shake correcting mechanism of claim 1 or 2 is the shake speed, acceleration and displacement amount. Since it is at least one selected from the group consisting of, the drive speed of the shake correction mechanism at the start of film exposure matches or is sufficiently high with respect to various kinds of shakes having different speeds, accelerations or displacements. Since they can approach each other, the shake correction control of the shake correction mechanism can be performed with high accuracy.

According to the photographing apparatus having the shake correcting mechanism of claim 4, the control device of the photographing apparatus having the shake correcting mechanism of any one of claims 1 to 3 determines the start timing of the shake correcting mechanism. At this time, since the fuzzy control is performed, the shake correction mechanism is driven at an appropriate timing and speed that minimizes the time between the start time of the shake correction mechanism and the exposure control start time.

According to the image pickup apparatus having the shake correction mechanism of claim 5, in the image pickup apparatus provided with the shake correction mechanism according to any one of claims 1 to 4, the start point is when the shake correction command is received by the shake correction mechanism. In order to start the calculation of shake correction control, at the start of exposure control, all calculations and preparations for shooting of the shooting device (for example, mirror up) are completed, and shake is performed at the correct timing and speed based on the shake information. The correction mechanism is driven.

According to the sixth aspect of the lens apparatus, the control for determining the start timing of the shake correction mechanism before the start of the exposure control is based on the shake information detected at the time before the start of the exposure control of the combined body apparatus. Since the device is provided, the shake correction mechanism is driven at an appropriate timing based on the shake information.

According to the lens apparatus of claim 7, claim 6
Since the control device of the lens device determines the target moving speed and / or the target moving speed of the shake correction mechanism,
The shake correction mechanism is driven at an appropriate timing and speed based on the shake information.

According to the lens device of claim 8, claim 6
Alternatively, in the lens apparatus according to claim 7, since the shake information is at least one kind selected from the group consisting of shake speed, acceleration, and displacement amount, various kinds of shakes different in speed, acceleration, or displacement amount can be obtained. Since the drive speed of the shake correction mechanism can match or be sufficiently close to the target drive speed at the start of film exposure, the shake correction control of the shake correction mechanism can be performed with high accuracy.

According to the lens device of claim 9, claim 6
In the lens apparatus according to any one of claims 8 to 9, since fuzzy control is performed when deciding the activation timing of the shake correction mechanism, an accurate timing with the shortest time between the start time of the shake correction mechanism and the exposure control start time is provided. The shake correction mechanism is driven at a speed.

According to the lens device of claim 10, in the lens device of any one of claims 6 to 9, the calculation of the shake correction control is started from the time when the shake correction command of the shake correction mechanism is received as a starting point. When the exposure control is started, all calculations and preparations for shooting of the shooting device (for example, mirror up)
By completing all of the above, the shake correction mechanism is driven at an appropriate timing and speed based on the shake information.

[0028]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail by describing the embodiments embodied by the drawings.

FIG. 1 is a block diagram showing an embodiment of an image pickup apparatus having a shake correction mechanism according to the present invention.
FIG. 4 is a schematic diagram showing a configuration including a photographing optical system of a photographing device having a shake correction mechanism according to the present invention.

This photographing apparatus is roughly composed of a lens device 1 and a body device 2. The lens apparatus 1 is provided with a vibration control microcomputer 3, an ultrasonic motor microcomputer 16, a communication microcomputer 24 and the like, while the body apparatus 2 is provided with a body microcomputer 25 and the like.

The image stabilization control microcomputer 3 includes an optical system from the output of the body microcomputer 25 provided in the body device 2 and each encoder such as the X encoder 5, the Y encoder 9, the distance encoder 15 and the zoom encoder 22. Based on the position information, the X-axis drive motor 7, the X-axis motor driver 8, the Y-axis drive motor 11, Y
The drive of the shake correction drive unit such as the shaft motor driver 12 is controlled to determine the start timing of the shake correction mechanism.

The lens contact 4 is a group of electrical contacts used for exchanging signals between the lens device 1 and the body device 2, and is connected to the communication microcomputer 24. The X encoder 5 detects the amount of movement of the optical system in the X axis direction, and its output is connected to the X encoder IC 6. The X encoder IC 6 converts an optical system movement amount in the X axis direction into an electric signal, and the signal is sent to the image stabilization control microcomputer 3.

The X-axis control motor 7 is a drive motor for driving the X-axis shake correction optical system. The X-axis motor driver 8 is a circuit that drives the X-axis drive motor 7. Similarly, the Y encoder 9 detects the amount of movement of the optical system in the Y-axis direction, and its output is connected to the Y encoder IC 10. The Y encoder IC10 converts the amount of movement of the optical system in the Y-axis direction into an electric signal, and the signal is
It is sent to the image stabilization control microcomputer 3.

The Y-axis control motor 11 is a drive motor for driving the Y-axis shake correction optical system. The Y-axis motor driver 12 is a circuit that drives the Y-axis drive motor 11.
The anti-vibration head amplifier 13 is a circuit that detects the amount of shake of the lens device 2, and converts shake information such as the speed and acceleration of shake and, if necessary, the amount of displacement, etc., into an electrical signal, which is used for anti-shake control. It is sent to the microcomputer 3. As the image stabilizing head amplifier 13, for example, an angle sensor or the like can be used.

The VR switch 14 is a switch for turning on / off the shake correction drive and switching between the shake correction mode A and the shake correction mode B. Here, for example, the shake correction mode A is a mode for performing rough control when correcting shake of the finder image after the shooting preparation start operation,
The shake correction mode B is a mode for performing precise control when correcting shake during actual exposure.

The distance encoder 15 is an encoder for detecting the focus position and converting it into an electric signal, and the output thereof is similarly the microcomputer for vibration control 3, the microcomputer 16 for ultrasonic motor, and the one for communication. It is connected to the microcomputer 24.

Microcomputer 16 for ultrasonic motor
Is for controlling the ultrasonic motor 19 for driving the focusing optical system drive section. The USM encoder 17 is an encoder that detects the amount of movement of the ultrasonic motor 19, and its output is connected to the USM encoder IC 18. US
The M encoder IC 18 is a circuit that converts the amount of movement of the ultrasonic motor 19 into an electric signal, and the signal is sent to the ultrasonic motor microcomputer 16.

The ultrasonic motor 19 is a motor for driving the focusing optical system. The ultrasonic motor drive circuit 20 is a circuit which has a drive frequency specific to the ultrasonic motor 19 and generates two drive signals having a 90 ° phase difference from each other. The ultrasonic motor IC 21 is a circuit that interfaces between the ultrasonic motor microcomputer 16 and the ultrasonic motor drive circuit 20.

The zoom encoder 22 is an encoder for detecting the lens focal length position and converting it into an electric signal, and its output is sent to the image stabilization control microcomputer 3, the ultrasonic motor microcomputer 16 and the communication microcomputer 24. Connected.

The DC-DC converter 23 is a circuit that supplies a stable DC voltage against fluctuations in the battery voltage.
It is controlled by a signal from the communication microcomputer 24.

The communication microcomputer 24 sends and receives signals between the lens device 1 and the body device 2, and another microcomputer (vibration control microcomputer 3, ultrasonic wave) provided in the lens device 1 is exchanged. The command is transmitted to the motor microcomputer 16).

The release switch 28 provided in the body device 2 is composed of a half-push switch SW1 for starting the photographing preparation operation by half-pushing and a full-push switch SW2 for instructing the start of the exposure control by full-pushing.

FIG. 3 is a flow chart for explaining the operation sequence of the image pickup apparatus of this embodiment. In step (hereinafter abbreviated as “S”) 200, the communication microcomputer 24 prepares for communication. At the same time, the image stabilization control microcomputer 3 prepares for communication in S201, and the ultrasonic motor microcomputer 16 sets in S20.
2. Prepare for communication.

In S203, the communication microcomputer 24 communicates with the body microcomputer 25 provided in the body device 2 via the lens contact 4. In S204, the communication microcomputer 2
4 transmits the focusing control instruction received from the body microcomputer 25 to the ultrasonic motor microcomputer 16.

In step S205, the ultrasonic motor microcomputer 16 performs focusing control based on the information from the zoom encoder 22 and the distance encoder 15. In S206, the image stabilization control instruction received from the body microcomputer 25 is transmitted to the image stabilization control microcomputer 3.

In step S207, the image stabilization control microcomputer 3 performs image stabilization calculation (starting timing of the shake correction mechanism, target moving speed, target moving acceleration, etc.). S20
8, the image stabilization control microcomputer 3 is
The image stabilization control is performed based on the image stabilization calculation result in 207.

FIG. 4 is a membership function M indicating the degree of membership when the speed of the conditional part of the processing function fuzzy rule by the control device provided in the photographing apparatus of this embodiment is input.
Is. FIG. 5 is a membership function U indicating the degree of membership when the acceleration of the condition part of the processing function fuzzy rule according to the present embodiment is input. Further, FIG. 6 is a membership function Q showing the control time output of the conclusion part of the fuzzy rule with respect to the degree of membership of the processing function according to the present embodiment.

With the membership function represented by FIGS. 4, 5 and 6, the control time output is obtained according to the following fuzzy rules. Rule 1: if M is PL or U is PL then Q is PL Rule 2: if M is ZR then Q is PS Rule 3: if M is NL or U is NL then Q is PL

FIG. 7 is a flow chart for explaining the calculation processing sequence by the condition part membership function M of the fuzzy rule shown in FIG. In S701, the vibration isolation head amplifier 1
It is determined whether the control target speed X1 calculated from the output waveform of 3 is greater than 0. If it is greater than 0, the process proceeds to S702, and if it is 0 or less than 0, the process jumps to S707.

In S702, it is determined whether or not the control target speed X1 is greater than the speed v3. If the control target speed X1 is greater than the speed v3, the process proceeds to S705, and if the control target speed X1 is the speed v3 or less than the speed v3. Proceed to S703.

At S703, the degree of belonging GA by PL is GA
1 = X1 / v3 is calculated. In S704, the degree of membership GA2 by ZR GA2 = 1−X1 / v3 is calculated. S70
In FIG. 5, the degree of membership by PL is GA1 = 1. S7
In 06, the degree of membership GA2 by ZR is set to GA2 = 0.

In S707, it is determined whether or not the control target speed X1 is smaller than the speed v2. If the target speed X1 is smaller than the speed v2, the process proceeds to S710 to determine whether the speed is the speed v2 or the speed v2.
If it is larger, the process proceeds to S708.

At S708, the degree of membership GA by NL
1 = X1 / v2 is calculated. In S709, the degree of membership GA2 by ZR GA1 = 1−X1 / v2 is calculated. S71
At 0, the degree of membership GA1 by NL is set to GA1 = 1. S7
In 11, the assignment degree by ZR GA2 = 0.

FIG. 8 is a flow chart for explaining the operation processing sequence by the condition part membership function U of the fuzzy rule shown in FIG. In S801, the image stabilization head amplifier 1
It is determined whether the control target acceleration X2 calculated from the output waveform of 3 is larger than 0, and if it is larger than 0, S802
If it is 0 or smaller than 0, the process jumps to S805.

In S802, it is determined whether or not the control target acceleration X2 is greater than the acceleration α3. If it is greater than the acceleration α3, the process proceeds to S804, and if it is the acceleration α3 or less than the acceleration α3, the process proceeds to S803.

At S803, the degree of belonging GA by PL is GA
3 = X2 / α3 is calculated. In S804, the degree of membership GA3 by PL is set to 1. In S805, it is determined whether or not the control target acceleration X2 is smaller than the acceleration α2. If it is smaller than the acceleration α2, the process proceeds to S807, and if it is the acceleration α2 or is larger than the acceleration α2, S80.
Go to 6.

At S806, the degree of membership GA by NL
3 = X2 / α2 is calculated. In S807, the degree of belonging GA3 by NL is set to GA3 = 1. FIG. 9 is a flow chart for explaining the operation processing sequence by the conclusion part membership function Q of the fuzzy rule of FIG.

In S901, it is determined whether or not (GA1-GA3) is greater than 0. If it is greater than 0, S9 is determined.
If it is 0 or smaller than 0, proceed to 02. S90
Go to 3.

In step S902, rule 1 or rule 3
Degree GA by conditional logical OR operation of fuzzy rules
Let 13 be GA3. In S903, the degree of membership GA13 by the conditional OR operation of the fuzzy rules of rule 1 or rule 3 is set to GA1.

In S904, the area of the area SB1 surrounded by the conclusion part membership function PL of the fuzzy rule and the GA 13 is calculated. In S905, the area of the region SB2 surrounded by the conclusion part membership functions PS and GA2 of the fuzzy rule is calculated.

In S906, T which becomes the control time output
_js is calculated as T _js = (tout1 × SB2 + tout3 × SB1) / (SB1 + SB2) by the centroid method.

In step S907, Tcontrol, which is the start timing of the shake correction control, is set to the shake correction start time Tstart transferred from the body device and Tcalculated in step S906.
_js and more calculated as Tcontrol = Tstart -T _js.

FIG. 10 is a time-angular velocity graph showing the timing from the receipt of the shake correction command output from the body device 2 to the start of exposure control when both the control target velocity and the control target acceleration are large. It is a figure.

[0064] As shown in FIG. 10, the shake accepting correction instruction (time t ₁₎ from the shake compensation control start (time t ₂₎ until the time - (time t ₂ time t _1), transferred from the body unit 2 Time to start of shake correction Tstart (time t ₃ −
Time t ₁ ) and calculation result T _js (time t _{3 −time} t ₂ ).
Calculated from the above, the start timing of the shake correction mechanism is determined at a timing (time t ₂ ) sufficiently earlier than the exposure control start timing (time t ₃ ), and the shake correction control is started. Then, at time t ₃ , the shake control target speed and the control speed match.

FIG. 11 is a time-angular velocity graph showing the timing from the receipt of the shake correction command output from the body device 2 to the start of exposure control when both the control target velocity and the control target acceleration are small. It is a figure.

[0066] As shown in FIG. 11, accepted shake correction instruction (time t ₁ ^') from the shake compensation control start (time t ^_2')
Time to - (time t ₂ 'time t _1'), the time Tstart of up to the shake correction start transfer from the body unit 2 (time t ₃ '- time t _1'), and the operation result T _js (time t ₃ '- time t _2') calculated from the start timing of the shake correction mechanism 'timing close to) (time t _2' exposure control start timing (time t ₃₎ is determined, and the shake correction control is started. Then, at time t ₃ ', the shake control target speed and the control speed match.

As described above, according to this embodiment, when the target drive speed and the target drive acceleration of the shake correction mechanism are large before the start of the shake correction control, the drive speed required at the start of the exposure control of the film. Since the shake correction drive can be started sufficiently before the shake is obtained, it is possible to perform high-precision shake correction, and when the target drive speed and target drive acceleration of the shake correction mechanism are small, shake correction is performed immediately before exposure of the film. Since the driving can be started, highly accurate shake correction can be performed while effectively using the controllable range of the shake correction control.

(Modification) As described above, in the present embodiment, both the target moving speed and the target moving acceleration of the shake correction mechanism are determined, but it is also possible to control either one of them. Good.

Further, in the present embodiment, the shake speed and acceleration are used as the shake information, but the shake displacement amount may be used in addition to these, so that more accurate shake information can be obtained. be able to.

Further, in the present embodiment, fuzzy control is used in order to increase the processing calculation speed when obtaining the target moving speed, the target moving acceleration, etc., but the present invention is not limited to this, and a normal fuzzy control is used. It may be controlled by calculation.

Furthermore, the present invention is not limited to the embodiments described in detail above, and various modifications and changes are possible, which are also included in the present invention. For example, in the above embodiments, the lens device and the body device are described as an example of a lens device of a single-lens reflex camera in which the lens device and the body device are detachable. Can also be applied.

[0072]

As described in detail above, the photographing apparatus having the shake correction mechanism according to claim 1 determines the shake correction control start time before the exposure control starts based on the shake information at any time. Since the drive speed of the shake correction mechanism can match or sufficiently approach the target drive speed at the start of film exposure, the shake correction control of the shake correction mechanism can be performed with high accuracy.

According to a second aspect of the present invention, there is provided a filming apparatus having a shake correction mechanism, wherein the control device of the first embodiment determines a target moving speed and / or a target moving speed of the shake correcting mechanism. Since the drive speed of the shake correction mechanism can match or sufficiently approach the target drive speed at the start of exposure, the shake correction control of the shake correction mechanism can be performed with extremely high accuracy.

In the image pickup apparatus provided with the shake correction mechanism of claim 3, the shake information used by the control device of the image pickup apparatus provided with the shake correction mechanism of claim 1 or 2 consists of shake speed, acceleration and displacement amount. Since it is at least one selected from the group, the drive speed of the shake correction mechanism can match or sufficiently approach the target drive speed at the start of film exposure, so that the shake correction control of the shake correction mechanism can be performed with high accuracy. .

According to a fourth aspect of the present invention, there is provided an image pickup apparatus having the shake correction mechanism according to any one of the first to third aspects, wherein the image pickup apparatus control apparatus has a fuzzy control when determining a shake correction control start time. Therefore, the shake correction mechanism can be driven at an appropriate timing and speed that minimizes the time between the shake correction control start time and the exposure control start time.

According to a fifth aspect of the present invention, there is provided an image pickup apparatus including the shake correction mechanism according to any one of the first to fourth aspects, wherein the shake correction is started from a point when a shake correction command is received by the shake correction mechanism. Since the calculation of the control is started, all the calculations and the preparations for the operation of the shake correction mechanism are completed at the start of the exposure control, and the shake correction mechanism can be driven at an appropriate timing and speed based on the shake information.

A lens apparatus according to a sixth aspect of the present invention is a lens apparatus that determines a start timing of the shake correction mechanism before the exposure control is started based on the shake information detected at the time before the exposure control is started of the combined body apparatus. Therefore, at the start of film exposure, the drive speed of the shake correction mechanism can match or sufficiently approach the target drive speed, and the shake correction control of the shake correction mechanism can be performed with high accuracy.

According to a seventh aspect of the present invention, since the control device for the lens apparatus according to the sixth aspect determines the target moving speed and / or the target moving acceleration of the shake correcting mechanism, the shake correcting mechanism is driven at the start of film exposure. Since the speed matches or is sufficiently close to the target drive speed, the shake correction control of the shake correction mechanism can be performed with extremely high accuracy.

The lens apparatus according to claim 8 is the lens apparatus according to claim 6 or 7, wherein the shake information is at least one selected from the group consisting of the speed, acceleration and displacement of the shake. Since the drive speed of the shake correction mechanism can match or be sufficiently close to the target drive speed at the start of film exposure, shake correction control of the shake correction mechanism can be performed with high accuracy.

A lens apparatus according to a ninth aspect is the lens apparatus according to any one of the sixth to eighth aspects, in which the controller performs fuzzy control when determining the shake correction control start time, and therefore the shake correction control is performed. The shake correction mechanism can be driven at an appropriate timing and speed with a minimum time between the start time and the exposure control start time.

A lens apparatus according to a tenth aspect of the present invention is the lens apparatus according to any one of the sixth to ninth aspects, wherein the arbitrary time is when a shake correction command of the shake correction mechanism is received, and therefore when the exposure control is started. All the calculations and preparations for the operation of the shake correction mechanism can be completed, and the shake correction mechanism can be driven at appropriate timing and speed based on the shake information.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of an image pickup apparatus including a shake correction mechanism according to the present invention.

FIG. 2 is a schematic diagram showing a configuration including a photographic optical system of a photographic device including a shake correction mechanism according to the present invention.

FIG. 3 is a flowchart illustrating an operation sequence of the image capturing apparatus according to the present exemplary embodiment.

FIG. 4 is a membership function M indicating the degree of membership when the speed of the condition part of the processing function fuzzy rule by the control device provided in the imaging apparatus of the present embodiment is input.

FIG. 5 is a membership function U indicating the degree of membership when the acceleration of the conditional part of the processing function fuzzy rule according to the present embodiment is input.

FIG. 6 is a membership function Q showing the control time output of the conclusion part of the fuzzy rule with respect to the degree of membership of the processing function according to the present embodiment.

FIG. 7 is a flow chart illustrating an arithmetic processing sequence by a condition part membership function M of the fuzzy rule shown in FIG.

8 is a flowchart illustrating an arithmetic processing sequence by a condition part membership function U of the fuzzy rule shown in FIG.

9 is a flowchart illustrating an operation processing sequence by a conclusion part membership function Q of the fuzzy rule of FIG.

FIG. 10 is a time-angular velocity graph showing the timing from the receipt of a shake correction command output from the body device 2 to the start of exposure control when both the control target velocity and the control target acceleration are large. .

FIG. 11 is an explanatory diagram showing the timing from the receipt of the shake correction command output from the body device 2 to the start of exposure control in a time-angular velocity graph when both the control target velocity and the control target acceleration are small. .

[Explanation of symbols]

1: Lens Device 2: Body Device 3: Anti-Vibration Control Microcomputer 4: Lens Contact 5: X Encoder 6: X Encoder IC 7: X Axis Drive Motor 8: X Axis Motor Driver 9: Y Encoder 10: Y Encoder IC 11: Y-axis drive motor 12: Y motor driver 13: Anti-vibration head amplifier (angular velocity sensor) 14: VR
Switch 15: Distance encoder 16: Microcomputer for ultrasonic motor 17: USM encoder 18: US
M encoder IC 19: Ultrasonic motor 20: Ultrasonic motor drive circuit 21: Ultrasonic motor IC 22: Zoom encoder 23: DC-DC converter 24: Communication microcomputer 25: Body microcomputer 26: Subject finder 27: Shake correction display unit 28: Release switch

Claims (10)

[Claims] 1. A shake correction mechanism for detecting a shake and moving a part or all of a photographing optical system and a photographing screen relative to each other, wherein the shake speed and the moving speed of the shake correction mechanism at the start of exposure control. An image pickup apparatus which corrects the shake by matching or approaching with, and including a control device which determines a start timing of the shake correction mechanism based on shake information at a time before the start of exposure control. An imaging device equipped with a correction mechanism. 2. An image pickup apparatus including the shake correction mechanism according to claim 1, wherein the control device determines a target movement speed and / or a target movement acceleration of the shake correction mechanism. An imaging device equipped with a mechanism. 3. An image pickup apparatus comprising the shake correction mechanism according to claim 1, wherein the shake information is at least one kind selected from a group consisting of a speed, an acceleration, and a displacement amount of the shake. An image pickup apparatus having a shake correction mechanism characterized by being present. 4. An imaging apparatus comprising the shake correction mechanism according to claim 1, wherein the control device performs fuzzy control when determining the activation timing of the shake correction mechanism. An imaging apparatus having a shake correction mechanism characterized by performing. 5. An image pickup apparatus comprising the shake correction mechanism according to claim 1, wherein the time before the start of the exposure control is when a shake correction command of the shake correction mechanism is received. An image pickup apparatus having a shake correction mechanism. 6. A lens device for matching or approaching the speed of shake generated at the start of exposure control of a combined body device with the moving speed of an attached shake correction mechanism, the time before starting the exposure control. A lens apparatus including a shake correction mechanism, comprising: a control device that determines a start-up timing of the shake correction mechanism before the start of exposure control based on the shake information detected in (3). 7. The lens device according to claim 6, wherein the control device determines a target moving speed and / or a target moving acceleration of the shake correction mechanism. 8. The lens device according to claim 6, wherein the shake information is at least one kind selected from the group consisting of a speed, an acceleration, and a displacement amount of the shake. Lens device to do. 9. The lens device according to claim 6, wherein the control device performs fuzzy control when determining a start timing of the shake correction mechanism. Lens device. 10. The method according to any one of claims 6 to 9.
In the lens device described in the item 1, the time before the start of the exposure control is at the time of receiving a shake correction command of the shake correction mechanism.