JPH07333665A - Anti-vibration device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide an anti-vibration device which is free from the risk of erroneous operation and has excellent operability. A mode setting switch 14 capable of selecting an image stabilization mode for performing image stabilization drive at least during exposure and a non-image stabilization mode, an image stabilization start switch 15 for instructing whether or not to start image stabilization control, When the mode setting switch 14 selects the image stabilization mode (S201) and the image stabilization start switch 15 instructs the start of image stabilization control (S202), the image stabilization drive is started even before the exposure is started. It starts (S203).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration isolation device for detecting and correcting camera shake that occurs during shooting.

[0002]

2. Description of the Related Art Generally, when hand-held photography is performed,
If a lens with a long focal length is used or if a slow shutter speed is used, camera shake is likely to occur and the image quality of the photograph is impaired. An anti-vibration device has been proposed to prevent this camera shake and eliminate the deterioration of photographic image quality.

FIG. 9 is a diagram showing a general structure of a vibration isolation device. In the figure, 1 is an interchangeable lens and 2 is a camera body. The interchangeable lens 1 includes a fixed lens group L1, a lens group L2 that moves in the optical axis direction to control focusing, and a shake correction lens group L3 (shake correction optical group that shifts in a direction perpendicular to the optical axis to correct shake). ) Has a photographing optical system. Here, the image stabilization lens unit L3
Takes the configuration of the last lens group of the photographing optical system, but is not limited to this type of optical system.

The shake detection device 3 is composed of a velocity sensor, an angular velocity sensor, or the like, and outputs a signal according to the detected vibration. Note that, in FIG. 9, the blur detection device 3 is provided in the interchangeable lens 1, but there is also one provided in the camera body 2.

The shake correction device 4 includes a shake correction lens group L3.
The shift mechanism is configured to move on a plane perpendicular to the optical axis. The correction and correction device 4 performs correction by shifting in the direction perpendicular to the optical axis and performing correction by tilting with respect to the optical axis.

The blur control device 5 is provided in the interchangeable lens 1, and lens information such as a focal length and information relating to blur correction are stored in a storage portion thereof. The blur control device 5 controls the drive of the blur correction device 4 to perform blur correction based on the information stored in the storage portion and the output of the blur detection device 3.

Such shake correction is started by operating a shake correction start switch. As the camera shake correction start switch, for example, a configuration provided on a manual focus ring or a zoom ring is known (Japanese Patent Application No. 4-628).
51).

[0008]

However, in the above-mentioned prior art, when the shake correction start switch is touched by mistake, the shake correction may be started against the intention of the photographer. , It was very inconvenient when shooting panning shots.

Further, when a heavy lens is used, the position of the left hand holding the lens is automatically determined, and operability is preferable even if a shake correction start switch is provided on the manual focus ring or zoom ring. There were times when it wasn't.

Therefore, the present invention solves the above-mentioned problems,
It is an object of the present invention to provide an anti-vibration device that has no erroneous operation and is excellent in operability.

[0011]

In order to solve the above-mentioned problems, the invention of claim 1 selects an image stabilization mode capable of selecting at least an image stabilization mode for performing image stabilization drive during exposure. The image stabilization mode is selected by the section (14), the image stabilization start selection section (15) for selecting whether or not to start image stabilization control, and the image stabilization mode selection section selects the image stabilization mode (S201). When the start selection section selects the start of image stabilization control (S
202), an image stabilization drive start instruction section (S203) for instructing the start of image stabilization drive even before the start of exposure.

According to a second aspect of the present invention, there is provided an image stabilization mode selection section (14) for selecting a first image stabilization mode for performing image stabilization drive during exposure or a second image stabilization mode for allowing image stabilization drive before exposure. −
1), the image stabilization start selection unit (15) for selecting whether or not to start image stabilization control, and the image stabilization mode selection unit selects the second image stabilization mode (S201, 2011), When the image stabilization start selection unit selects the start of image stabilization control (S202), an image stabilization drive start instructing unit (S203) is instructed to start the image stabilization drive. .

The invention of claim 3 is the invention of claim 1 or claim 2.
In the image stabilization device described in the paragraph [4], the image stabilization start selection unit operates only while being externally operated.

According to a fourth aspect of the present invention, in the image stabilizing apparatus according to any one of the first to third aspects, the image stabilizing start selecting section is provided on the lens barrel. There is.

According to a fifth aspect of the present invention, in the vibration isolator according to the fourth aspect, the vibration isolation start selection section is arranged in the vicinity of the manual operation ring.

According to a sixth aspect of the present invention, in the image stabilization apparatus according to the fifth aspect, the image stabilization start selection section is disposed between the manual focus operation ring and the zoom operation ring.

According to a seventh aspect of the present invention, in the image stabilizing apparatus according to the fourth aspect, the image stabilizing start selecting section is arranged near the center of gravity of the lens barrel.

According to an eighth aspect of the present invention, in the vibration isolator according to any one of the fourth to seventh aspects, at least two vibration isolation start selection units are arranged for a vertical position and a horizontal position. Characterize.

According to a ninth aspect of the present invention, in the image stabilizing apparatus according to any of the fourth to eighth aspects, the image stabilization start selecting section is provided in a recess of the lens barrel.

The invention of claim 10 is the invention of claims 4 to 8.
In the image stabilization device described in the paragraph [4], the tip end of the image stabilization start selection portion is substantially the same as the surface of the fixing member.

[0021]

In the present invention, the image stabilization mode selection section and the image stabilization start selection section are provided, and the image stabilization start selection section is arranged at a position where operability is preferable, so that the shake correction is erroneously started. And the operability is also good.

[0022]

Embodiments will be described in more detail below with reference to the drawings and the like. FIG. 1 is a sectional view showing the structure of an interchangeable lens of a first embodiment of a blur correction device according to the present invention. It should be noted that parts having the same functions as those of the general configuration shown in FIG. 8 are designated by the same reference numerals, and redundant description will be omitted. The fixed lens barrel 6 holds the fixed lens group L1 at the front portion thereof, and the holding frame 7 of the focus lens group L2 is slidably fitted to the inner diameter thereof. Focus drive ring 8
Is fitted to the outer circumference of the fixed lens barrel 6 and its outer peripheral portion 8a
Is exposed on the outer circumference of the lens and functions as a manual focus ring.

The holding frame 7 has its straight guide portion 7a engaged with the straight guide groove 6a of the fixed lens barrel 6, and the focus guide portion 7b penetrates the relief portion 6b of the fixed lens barrel 6 to drive the focus. It engages with the lead groove 8 b of the ring 8. The focus drive ring 8 is provided with a gear 8c at its rear end portion and meshes with gears 9 and 10 for autofocus drive. The rear end portion 10a of the gear 10 has a coupler shape, engages with a coupler on the camera body side (not shown), and transmits an autofocus drive force.

The operation will be described here. When the coupler of the camera body rotates, the rotation is the gear 1
The focus drive ring 8 is rotated by being transmitted to 0, 9, and 8c. Since the focus guide portion 7b is engaged with the lead groove 8b, the holding frame 7 moves in the optical axis direction along the lead inclination. Since the guide portion 7a is engaged with the straight advance guide groove 6a, the holding frame 7 moves in the optical axis direction without rotating. When performing manual focusing, the outer periphery of the focus drive ring 8 (manual focus ring) 8
The holding frame 7 is moved by manually rotating a.

The shake detection device 3 is housed in the installation space 6c of the fixed barrel 6. The shake control device 5 is a one-chip microcomputer unit (hereinafter, MCU 1)
And is stored in the arrangement space 6d of the fixed lens barrel 6. The function of the MCU 1 is to output the output of the shake detection device 3 to A /
The D conversion is performed, the value is arithmetically processed, the shake correction device 4 is controlled, and communication with the camera body 2 is performed. The shake correction device 4 is connected to the holding frame 13 of the shake correction lens group L3.

The fixed barrel 6 has a bayonet structure formed at its rear end 6e and is mounted on the camera body 2. The electrical contact 11 is connected to an unillustrated camera body side electrical contact in a state where the electrical contact 11 is mounted on the camera body 2 to perform signal transmission and power supply.

The diaphragm mechanism 12 is composed of diaphragm blades 12a, diaphragm drive ring 12b and the like. The protrusion of the diaphragm blade 12a is engaged with the cam groove provided in the diaphragm drive ring 12b and the hole 6f provided in the fixed barrel 6. Aperture drive ring 12
When b is rotated, the diaphragm blade 12a is rotated to change the diaphragm aperture.

The blur correction mode setting switch 14 can set two modes of blur correction ON and blur correction OFF. When it is set ON, blur correction during exposure is performed. The image stabilization start switch 15 is a switch for performing shake correction when the switch is in the ON state while being pressed.

FIG. 2 is a block diagram showing the construction of the camera body and interchangeable lens according to the first embodiment. As described above, the interchangeable lens 1 includes the shake detection device 3, the shake correction device 4, the shake correction mode setting switch 14, the image stabilization start switch 15, and the like, which are connected to the shake control device 5. Further, the shake control device 5 has the electric contact 1
It is connected to 1-1. The electrical contact 11-1 includes a clock contact 11a and a data contact (lens side output) 11
b, a data contact (lens side input) 11c, and a ground contact 11d are provided.

The camera body 2 is provided with a camera control unit 16 which is a one-chip microcomputer unit (hereinafter referred to as MCU2) for performing communication with a lens and exposure control of the camera. The control device 16 has an electrical contact 11
-2 is connected. The electrical contact 11-2 includes a clock contact 11A, a data contact (body side input) 11B,
A data contact (body-side output) 11C and a ground contact 11D are provided. When the interchangeable lens 1 is attached to the camera body 2, the electric contacts 11-1 and 11-2 are connected to each other, and communication is possible.

FIG. 3 is a flow chart showing the operation of the MCU 1 of the image stabilizing device according to the first embodiment. The operation of the interchangeable lens 1 communicates with the camera body 2 in S100. In S101, it is determined from the communication result whether or not the blur correction is started. If the blur correction is started, the process proceeds to S102. In S102, shake correction control is started.

FIG. 4 is a flow chart showing the operation of the MCU 2 of the image stabilizing apparatus according to the first embodiment. The operation of the camera body 2 is to communicate with the interchangeable lens 1 in S200. In step S201, the shake correction mode is determined from the communication result, and it is determined whether or not shake correction is performed.
If the image stabilization is not performed, the process proceeds to S207.

In S202, it is determined from the communication result whether or not the shake correction is started. If the shake correction is to be started, the process proceeds to S203. If the shake correction is not to be started, the process is S
Jump to 204. In step S203, in response to the determination in step S202, communication with the interchangeable lens 1 is performed, and the start of blur correction is transmitted.

Next, in S204, it is determined whether or not to release. If not released, the process returns to S200, and if released, the process proceeds to S205. S20
In step 5, immediately before the release, communication with the interchangeable lens 1 is performed to transmit the start of blur correction. In S206,
Execute the release.

On the other hand, in S207, it is determined whether or not the shutter is released. If the shutter is not released, the process returns to S200, and if the shutter is released, the process proceeds to S206 to execute the shutter release without correcting the shake.

As described above, the shake correction mode setting switch 14 is a switch that performs a basic setting for whether or not shake correction is performed, and the image stabilization start switch 15
Is a switch that performs a setting function of whether or not shake correction other than during exposure is performed.

The image stabilization start switch 15 is provided near the position where the lens barrel 1 is supported by the left hand when the camera is held, and can be easily operated. The lens barrel 1 is relatively light in weight, and if the left hand can be stably held near the operation ring including the manual focus ring 8a, the left hand is generally attached to this position. And the vibration isolation start switch 15
Should be provided.

Further, the lens barrel 1 is heavy in weight,
When the position to put the left hand on in order to stably hold is determined regardless of the position of the operation ring, the vibration isolation start switch 15 may be provided in the vicinity thereof. Therefore, the image stabilization start switch 15 is provided near the center of gravity of the lens barrel 1.

FIG. 5A is an external view showing a vibration isolator according to the first embodiment. Anti-vibration start switch 15-1
3 are provided near the center of gravity G of the lens barrel 1 so that they can be operated in both vertical position shooting and horizontal position shooting.

FIG. 5B shows the image stabilization start switch 15-1.
FIG. The anti-vibration start switch 15-1 has its tip retracted from the outer periphery of the lens barrel 1 by δd so that it cannot be touched carelessly.

FIG. 6A is an external view showing a case where this embodiment is applied to a zoom lens. The image stabilization start switch 15-2 is provided between the manual focus ring 8 a and the zoom operation ring 16. Anti-vibration start switch 15
-2 is arranged near the center of gravity of the lens, and the manual focus ring 8a and the zoom operation ring 16 are sandwiched therebetween.
Are arranged. For a lens with a light weight,
The arrangement position of the image stabilization start switch 15-2 does not cause a problem in operation even if it is slightly apart from the center of gravity position.

FIG. 6B shows an image stabilization start switch 15-2.
FIG. The anti-vibration start switch 15-2 is surrounded by the fixing member 6g, and its tip is substantially the same as the surface of the fixing member 6g, so that it cannot be touched carelessly.

FIG. 7 is an external view showing a second embodiment of the vibration isolator according to the present invention. In the second embodiment, the first
The difference from the embodiment of FIG.
4, the setting modes can be set to three modes: blur correction off mode, exposure blur correction mode (mode 1), exposure blur correction and blur correction start switch on blur correction mode (mode 2). That is. Further, the image stabilization start switch 15-3 is provided at a position where it can be operated by the palm of the left hand. This anti-vibration start switch 15-3
Can further reduce the possibility of accidentally touching and unintentionally starting blur correction.

FIG. 8 is a flow chart for explaining the operation of the vibration isolator according to the second embodiment. The operation flow of the interchangeable lens 1 is the same as that of the first embodiment (FIG. 3), and thus its description is omitted. In the second embodiment, in S201, the shake correction mode is determined from the communication result, and it is determined whether or not the shake correction is performed. If the shake correction is performed, the process proceeds to S2011 to determine whether mode 1 or mode 2 is set. To do. In the case of mode 2, the process proceeds to S202 as in the first embodiment. In the case of mode 1, the process jumps to S204. Since the other steps are substantially the same as those in FIG. 4, description thereof will be omitted.

The present invention is not limited to the embodiments described above, and various modifications and changes are possible, which are also included in the present invention. Although the present embodiment has been described based on the single-lens reflex camera system, the present invention can be applied to a lens shutter camera in which the camera and the lens are integrated. In this embodiment, the shake detection device 3, the shake control device 5, the shake correction mode setting switch 14, and the image stabilization start switch 15 are
The control device 16, which is installed on the interchangeable lens 1 and gives an instruction to start blur correction, is installed inside the camera body 2, but the installation location may be any place.

Furthermore, it is also possible to change the function allocation of the control devices 5 and 16, or to integrate and perform them by one MPU. Furthermore, in this embodiment, the first
In the first and second embodiments, and in the first embodiment, the single focus lens and the zoom lens are described in different modes for the image stabilization start switch, but it goes without saying that the combinations thereof are free.

[0047]

As described above in detail, according to the present invention, the image stabilization mode selection unit and the image stabilization start selection unit are provided, and the image stabilization start selection unit is arranged at a position where operability is preferable. There is an effect that blur correction is not accidentally started and the operability is good.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing the configuration of a first embodiment of a vibration isolation device according to the present invention.

FIG. 2 is a block diagram showing a configuration of a vibration isolation device according to the first embodiment.

FIG. 3 is a flowchart showing a lens operation of the image stabilization device according to the first example.

FIG. 4 is a flowchart showing a body operation of the image stabilization device according to the first embodiment.

FIG. 5 is a diagram showing an external appearance of a vibration isolation device according to the first embodiment and a partially enlarged view of a vibration isolation start switch.

6A and 6B are a diagram showing an external appearance and a partially enlarged view of the image stabilization start switch when the image stabilization apparatus according to the first embodiment is used for a zoom lens.

FIG. 7 is an external view showing a second embodiment of the vibration isolator according to the present invention.

FIG. 8 is a flowchart showing a body operation of the image stabilizing device according to the second embodiment.

FIG. 9 is a block diagram showing a general configuration of a vibration isolation device.

[Explanation of symbols]

 1 Interchangeable Lens 2 Camera Body 3 Shake Detection Device 4 Shake Correction Device 5 Shake Control Device 11 Electrical Contact 14 Shake Correction Mode Setting Switch 15 Anti-Vibration Start Switch 16 Camera Control Device

Claims (10)

[Claims] 1. An image stabilization mode selection unit capable of selecting at least an image stabilization mode for performing image stabilization drive during exposure, and an image stabilization start selection for selecting whether or not to start image stabilization control. Section, the image stabilization mode selection unit selects the image stabilization mode, and the image stabilization start selection unit selects the start of image stabilization control, the image stabilization drive A vibration control device including a vibration control drive start instruction section for instructing start. 2. An image stabilization mode selection section for selecting a first image stabilization mode for performing image stabilization drive during exposure or a second image stabilization mode for allowing image stabilization drive before exposure, and starting image stabilization control. The image stabilization start selection unit for selecting whether to perform or not, the image stabilization mode selection unit selects the second image stabilization mode, and the image stabilization start selection unit selects the start of the image stabilization control. An anti-vibration device including an anti-vibration drive start instructing section that gives instructions to start anti-vibration drive. 3. The image stabilization device according to claim 1, wherein the image stabilization start selection section operates only while an external operation is performed. 4. The image stabilization device according to claim 1, wherein the image stabilization start selection unit is provided on a lens barrel. 5. The vibration isolation device according to claim 4, wherein the vibration isolation start selection unit is arranged in the vicinity of the manual operation ring. 6. The image stabilization device according to claim 5, wherein the image stabilization start selection unit is disposed between the manual focus operation ring and the zoom operation ring. 7. The image stabilization device according to claim 4, wherein the image stabilization start selection unit is disposed near a center of gravity of the lens barrel. 8. The anti-vibration device according to claim 4, wherein at least two anti-vibration start selection units are provided for a vertical position and a horizontal position. apparatus. 9. The image stabilization device according to claim 4, wherein the image stabilization start selection unit is provided in a recess of the lens barrel. 10. The vibration isolation device according to claim 4, wherein the vibration isolation start selection portion has a tip portion substantially the same as the surface of the fixing member.