JP2001296572A - Vibration-proof camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the following problems: in the case of arranging a shake correcting optical part between an interchangeable lens attaching mount surface and a mirror for switchably projecting a picked up image to a finder and a film surface in a camera body, the shake correcting optical part is driven beyond the extent of the correcting movement, and then, the shake correction option part is broken, besides, in the case of largely moving the shake correction optical part, aberration occurs in a part not related with the shake. SOLUTION: The vibration-proof camera is provided with a camera state notification part 37 for notifying the operating stat of the camera, a detection sensor 12 for detecting camera shake information, the shake correcting optical part 14 arranged between the final group of a photographic lens 2 or the surface of the lens mount 8 and the mirror 22 for projecting/controlling the picked up image to the film 27 surface so as to correct the movement of the picked up image on the film surface based on the camera shake information detected by the detecting sensor 12, a focal distance judging means for comparing the focal distance information of the photographic lens 2 with a prescribed value and judging the focal distance, and a correction driving part 13 for making the camera state notification part 37 notifying the state based on the comparing/judging results by the focal distance judging means, and also, limiting the correcting operation of the shake correcting optical part 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-shake camera having a camera shake correction function for preventing deterioration of image quality due to camera shake of a photographer.

[0002]

2. Description of the Related Art Conventionally, there have been proposed various techniques relating to cameras for preventing image quality deterioration of a photographed image due to camera shake of a photographer. For example, a camera shake warning may be given to a photographer during a low-speed shutter in which camera shake is likely to occur, a technique of shifting a program diagram toward a high-speed shutter, or a camera shake amount detected by an acceleration or angular velocity sensor. Start the shutter operation at the timing when camera shake is minimum, or
When camera shake is detected, the camera shake is positively corrected.To offset the image blur, a part of the shooting optical system lens is tilted or displaced in the direction perpendicular to the optical axis, and the shot image on the film surface is There is a method to stabilize.

As a method of tilting or displacing the taking optical system lens, for example, Japanese Patent Application Laid-Open No. 1-119113 discloses a camera that corrects camera shake by driving the last lens group of the taking lens perpendicular to the optical axis. It has been disclosed.

Further, Japanese Patent Application Laid-Open No. 8-129198 discloses that
A camera for driving a film perpendicular to an optical axis to correct camera shake is disclosed.

[0005]

SUMMARY OF THE INVENTION The above-mentioned Japanese Patent Laid-Open Publication No. 1-191-1991.
The camera having a camera shake correction mechanism for driving a part of a photographing lens to cancel a camera shake of a photographer disclosed in Japanese Patent Publication No. 113 is disclosed in Japanese Patent Application Publication No. If various types of photographing lenses can be interchangeably mounted on the camera body according to the requirements, a camera shake correction mechanism is required for each of the interchangeable photographing lenses. It is necessary to equip a mechanism. For this reason, there is a problem that the size and cost of the taking lens increase.

A camera having a camera shake correction mechanism for driving a film perpendicularly to an optical axis disclosed in Japanese Patent Application Laid-Open No. 8-129198 discloses a single lens reflex for driving and correcting the film. In the case of a camera, there is a problem that the effect of correcting a captured image cannot be confirmed in the viewfinder.

In order to solve the above-mentioned problem, it is conceivable to dispose a blur correction optical unit in a camera body between a mount surface for mounting an interchangeable lens and a mirror for switching a projected image to a viewfinder and a film surface. Thus, it is not necessary to equip each interchangeable lens with a shake correction mechanism, and it is possible to suppress an increase in the size and cost of the interchangeable lens. Also,
The subject image exposed on the film surface can be confirmed with the viewfinder. However, when the blur correction optical unit is used, the blur correction operation can be performed corresponding to a wide focal length of the lens, but the following two problems are conceivable.

One of the problems is that, when the focal length is large, the degree of image blur differs greatly even when the degree of camera shake is the same as when the focal length is short. If the focal length is extremely large, the range in which the blur correction can be performed will be used up, and if there is no restriction, the blur correction optical unit may penetrate the end of the movable correction range and may be damaged.

As a second problem, when the focal length is extremely short, there is no problem in the blur correction range. However, if the blur correction optical unit is moved too much, aberration occurs in a portion unrelated to blur.

As a result, there is a problem that the optical performance is deteriorated as a result.

SUMMARY OF THE INVENTION The present invention has been made in view of the conventional problems, and has a built-in anti-shake optical section in a camera body. It is an object of the present invention to provide an anti-shake camera with little deterioration.

According to the present invention, there is provided an anti-shake camera comprising:
Detecting means for detecting camera shake information of the camera, and photographing the last group of lens or lens mount surface and the film surface to correct the movement of the photographed image on the film surface based on the camera shake information detected by the detecting means. The blur correction optical means provided between the mirror for controlling the projection of the image, the focal length determining means for comparing and determining the focal length information of the taking lens with a predetermined value, and the result of the comparison determination by the focal length determining means. And a correction driving means for limiting the correction operation of the blur correction optical means.

Further, the image stabilizing camera of the present invention includes a camera state notifying unit for notifying an operation state of the camera, a detecting unit for detecting camera shake information, and a camera shake information detected by the detecting unit. A blur correction optical unit provided between a final group or a lens mount surface of a photographing lens for correcting movement of a photographed image on a film surface and a mirror for controlling projection of a photographed image on the film surface, and a focus of the photographing lens. A focal length determining unit for comparing and determining the distance information with a predetermined value; and performing a state notification operation on the camera state notifying unit in accordance with a result of the comparison determination by the focal length determining unit, and correcting the blur correction optical unit. Correction driving means for restricting the operation.

Further, in the focal length judging means of the anti-vibration camera according to the present invention, the predetermined value to be compared with the focal length information of the photographing lens is a focal length on a wide angle side or a telephoto side than usual. And

According to the present invention, the blur correcting optical means is disposed between the lens mount surface in the camera body or the final lens of the mounted photographing lens and the mirror for controlling the projection of the photographed image on the film surface. By controlling the means to limit the tilt based on the focal length information of the photographic lens, the photographic operation relationship between the blur correction optical unit and the mirror during photographing can be driven without hindrance, and the photographic lens can be replaced. Provision is now possible.

[0015]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a block diagram illustrating a conceptual configuration of an anti-shake camera according to the present invention, FIG. 2 is a block diagram illustrating an overall configuration of the anti-shake camera according to the present invention, and FIG. 3 is an anti-shake camera according to the present invention. FIG. 4 is a side cross-sectional view illustrating the internal configuration of the camera body and the photographing lens. FIG. 4 is a rear perspective view of the appearance of the anti-vibration camera according to the present invention, and FIG. FIG. 6 shows a shake correction optical unit of the image stabilization camera according to the present invention,
FIG. 6A is a front perspective view, FIG. 6B is an explanatory view, FIGS. 7 to 19 are flowcharts for explaining the operation of the image stabilizing camera according to the present invention, and FIG. FIG. 4 is an explanatory diagram illustrating a movable range of a shake correction optical unit of the shake camera.

The anti-vibration camera of the present invention is a single-lens reflex camera.
The camera body has a lens mount surface. This camera body is provided with a quick return mirror that allows a subject image captured by an interchangeable photographing lens mounted on the lens mount surface to enter a viewfinder for visually checking or to enter a film surface during photographing exposure. . A camera shake correction optical member is disposed between the mount surface and the quick return mirror, and a camera shake detection sensor built in the camera body detects a camera shake, and the camera shake correction optical member This is for correcting the blur of the subject image incident on the surface.

Referring to FIG. 1, a description will be given of a basic configuration of camera shake correction of the image stabilizing camera according to the present invention. A blur correction optical unit 14 provided between the lens mount surface of the camera body and the quick return mirror includes a blur control microcomputer (hereinafter simply referred to as a blur control microcomputer) 1.
Under the control from 1, the subject image is moved on the image plane of the film by displacing the position to cancel the subject image blur due to the camera shake of the camera. The blur control microcomputer 11 generates and outputs a signal for blur correction based on the output of a blur detection sensor (not shown) and the focal length state of the photographing lens in order to control the blur correction operation by the blur correction optical unit 14. Perform operation control.

The blur control microcomputer 11 is connected to a camera control microcomputer (hereinafter simply referred to as a camera control microcomputer) 21 for controlling the entire camera. The camera control microcomputer 21 controls the operation and operation of the entire camera.
Reference numeral 1 performs a blur correction operation under the control of the camera control microcomputer 21. The camera control microcomputer 21 is connected to a camera state notification unit 37 and a communication unit 103.
The camera state notification unit 37 displays the operation state of the camera to notify the photographer, and the communication unit 103 includes an electric circuit that drives and controls various lens driving units provided in a photographic lens (not shown). This is an interface for communicating various kinds of control information with the server. The above microcomputer 2 for camera control
1 is provided with a first focal length judging unit 104, obtains current focal length information of the photographing lens via the communication unit 103, and compares the obtained current focal length information with a predetermined value. Then, the focus state of the photographing lens is determined and displayed on the camera state notification unit 37. The blur control microcomputer 11 is provided with a second focal length determination unit 105,
The camera control microcomputer 21 compares the current focal length information of the photographing lens with a predetermined value to control the correction operation of the blur correction optical unit 14.

That is, the microcomputer 21 for controlling the camera
Communicates with an interchangeable taking lens (not shown) via the communication unit 103 to obtain current focal length information of the taking lens.
The obtained focal length information is transmitted to the first focal length determining unit 1
If the shooting mode of the camera is set to the shake correction mode in 04 and the obtained focal length information is out of the predetermined range, a warning is displayed on the camera state notification unit 35. If the focal length is extremely large, the blur correction optical unit 14 may exceed the range in which the blur correction can be performed. This is because the blur correction optical unit 14 largely operates and aberrations are generated regardless of the blur, and the optical performance is deteriorated. Therefore, when the focal length is out of the predetermined range, a warning is given to the effect that a sufficient blur correction range cannot be obtained in order to limit the range of the blur correction operation.

When the photographing mode of the camera is the blur correction mode, the focal length information is also transferred to the blur control microcomputer 11 to be used for the image blur correction operation due to camera shake and the second image. Focal length information judgment unit 1
05 is sent to determine whether the focal length is within a predetermined range. This determination is the same as that of the first focal length determination unit 104 described above. If the determination is outside the predetermined range, the correction operation range of the blur correction optical unit 14 is limited.

Next, the overall structure of the anti-shake camera of the present invention will be described with reference to FIG. The image stabilizing camera according to the present invention includes a camera operation block for performing the operation of the camera, a shake detection / correction block for performing the shake detection / correction operation, and an interchangeable lens block for the interchangeable photographing lens. Each of these blocks is provided with a camera control microcomputer 21, a camera shake control microcomputer 11, and a lens control microcomputer 41, which are control microcomputers. The camera control microcomputer 21 is connected to the camera shake control microcomputer 11 and the lens control microcomputer 41, and controls the operation of the entire camera.

In the camera operation block, a quick return mirror 22 is arranged on the optical axis of a photographic lens of an interchangeable lens block described later. This quick return mirror 22 is used to guide the subject light captured by the photographing lens to a viewfinder or to guide the subject light to a film.
This quick return mirror 22 is a mirror that operates down and is driven and controlled by a mirror driving unit 23 under the control of the microcomputer 21 for camera control. The up / down state of the quick return mirror 22 is detected by the mirror state detecting section 24, and the current state of the quick return mirror 22 is transferred to the camera control microcomputer 21. Behind the optical axis of the quick return mirror 22, a shutter device 25 is provided.
Drive control is performed by the shutter drive unit 26 based on the drive control of (1). Behind the optical axis of the shutter device 25, a film 27 for exposing and recording subject light is arranged.
The film 27 is controlled to be wound / rewinded by a film drive unit 28 under the drive control of the camera control microcomputer 21, and the state of the film 27 is detected by a film state detection unit 29. Film state information is supplied to the control microcomputer 21.

The quick return mirror 22 and the shutter device 25 are used for exposing the film 27 to subject light.

The camera control microcomputer 21 is connected to a lens exchange switch 30, a lens attachment detection unit 31, and a body communication unit 32. Lens replacement switch 30
Is a switch used when removing the interchangeable lens from the camera body. The lens attachment detection unit 31 is a switch that detects whether or not the interchangeable lens is attached to the camera body. These are electrical contacts of a communication interface on the body side for communicating with the lens control microcomputer 41 of the interchangeable photographing lens block.

Further, the camera control microcomputer 21 has a photographing mode setting section 33 and a photographing preparation instructing section (1R) 3
4. The photographing start instruction unit (2R) 35, the camera power switch 36, and the camera status notification unit 37 are connected. The shooting mode setting unit 33 selects and sets a shooting mode of the camera, for example, automatic focus, automatic exposure, strobe light emission, and the like, and also sets a mode for performing or not performing anti-shake shooting according to the present invention. A photographing preparation instructing unit (1R) 34 is a button switch for issuing a photographing preparation instruction for performing luminance measurement and distance measurement of a subject by a luminance and distance measuring means (not shown) prior to photographing exposure of the subject. When the release switch is half-pressed, the first release switch (1R) is turned on, and a photographing preparation operation is instructed. The photographing start instructing unit (2R) 35 is configured to provide a shutter drive speed of the shutter device 25 and a lens opening at a diaphragm blade 45 of an interchangeable lens block, which will be described later, based on the subject luminance and the distance measurement value measured in the photographing preparation operation. And a button switch for instructing a shooting start to expose the subject light to the film 27 by driving the quick return mirror 22 to the mirror-up drive and the shutter device 25. Generally, the release switch is pressed halfway. When it is further depressed, the second release switch (2R) is turned on, and a photographing start operation is instructed. The camera power switch 36 is connected to the camera control microcomputer 21.
And a switch for supplying a drive power supply for driving various drive units and detection units, and a power supply for driving a blur detection / correction block and an interchangeable lens block, which will be described later, from a power supply battery (not shown). Camera status notification unit 3
Reference numeral 7 denotes a photographing condition which informs the photographer of the photographing mode set by the photographing mode setting unit 33 such as the shutter time, the aperture, and the like. Is displayed.

The camera shake detection / correction block is provided with a camera shake control microcomputer 11 connected to the camera control microcomputer 21. The camera shake control microcomputer 11 detects a camera shake state occurring in the camera and detects an image blur caused by the camera shake. Control of the blur correction operation for prevention is performed. This microcomputer 1 for shake control
1 operates in response to an instruction from the camera control microcomputer 21. Further, the camera control microcomputer 21 obtains the focal length information from the communication with the lens control microcomputer 41, and the blur control microcomputer 11 takes in the information and uses it for the blur correction operation.

The shake control microcomputer 11 is connected to a shake detection sensor 12, a correction drive actuator 13, a correction encoder 15, and a correction optical system lock unit 16. The correction drive actuator 13 and the correction optical system lock unit 1 are connected to each other.
6 is also connected to the blur correction optical unit 14.

The camera shake detection sensor 12 detects a camera shake corresponding to the horizontal axis (X axis) of the film surface and detects a camera shake corresponding to the vertical axis (Y axis) of the film surface. It is composed of a blur detection sensor (Y) 12Y for detecting. These shake detection sensors 12X and 12Y
A known angular velocity sensor (vibrating gyroscope) or the like is used.
The camera shake information detected by the camera shake detection sensors 12X and 12Y is taken into the camera shake control microcomputer 11 and filtered to remove noise components not directly related to camera shake, and camera shake information will be described later. Correction encoder unit 15
A control signal for a blur correction operation is created based on the output information from. The correction drive actuator 13 is a correction drive actuator for driving a shake correction optical unit 14 for performing shake correction and performing a shake correction operation.
7, a correction drive actuator (X) 13X corresponding to the horizontal axis (X axis) and a correction drive actuator (Y) 13Y corresponding to the vertical axis (Y axis). As the correction driving actuators 13X and 13Y, general actuators such as a DC motor and a voice coil are used.

The blur correction optical section 14 drives the film 27 by driving the correction drive actuators 13X and 13Y.
Is a shake correction optical member that causes a captured image to move on the exposure surface. The shake correction optical unit 14 is provided on the optical axis between the lens mount 8 for mounting the interchangeable lens block on the camera operation block and the quick return mirror 22, and the image on the exposure surface of the film 27 caused by camera shake is provided. This is to correct blur. Specifically, there is a method in which image movement is generated by tilting a lens, and a method in which image movement is generated by shifting a lens.In the embodiment of the present invention, a blur correction optical member of a type in which a parallel plate is tilted is used. Used.

The correction encoder 15 includes a blur correction optical unit 1
And a correction encoder (X) 15X corresponding to the horizontal axis (X axis) on the surface of the film 27;
A correction encoder (Y) 15Y is provided corresponding to the vertical axis (Y axis). These correction encoders 15X and 15Y
Photo interrupters / photo reflectors (hereinafter PI /
The operation state of the blur correction optical unit 14 is detected by using a position detection element such as an infrared light emitting diode / light position detection element (hereinafter, referred to as IRED / PSD) or the like. , The blur control microcomputer 1
1 and the blur control microcomputer 11 generates a correction drive control signal for the blur correction optical unit 14.

The correction optical system lock unit 16 locks the shake correction optical unit 14 at a predetermined position, and does not needlessly drive the shake correction optical unit 14 particularly when the camera body and the interchangeable photographing lens are attached and detached. Is to lock fixedly.

Next, the interchangeable lens block has a lens control microcomputer (hereinafter, referred to as a lens control microcomputer) 41 provided in the interchangeable lens, and the lens control microcomputer 41 is provided on the camera body side. Communication with the microcomputer 21 for camera control is performed, and transmission and reception of a focusing lens drive instruction and an aperture drive instruction for focusing a photographing lens and transmission of current focal length information of the interchangeable lens are performed.

The interchangeable lens block includes a focusing lens 4 as a taking lens group for taking in subject light.
2 and a variable power lens 48 are provided, and an aperture blade 45 is provided between the focusing lens 42 and the variable power lens 48. Further, the interchangeable lens block can be attached and detached by a lens mount 8 provided on the camera body.

The focusing lens 42 focuses on the subject light by being driven in the optical axis direction, and is a lens for focusing the subject image on the exposure surface of the film 27. The zoom lens 48 performs a focal length changing operation by being moved in the optical axis direction.

The microcomputer 41 for lens control includes a focusing lens position detecting section 43, a lens driving actuator 44, an aperture position detecting section 46, an aperture driving actuator 47, a variable power position detecting section 50, and a lens data communication section 51. Is connected.

The focusing lens position detecting section 43
The current position state of the focusing lens 42 is detected, and the position information is supplied to the lens control microcomputer 41. The focusing lens position detector 43 is composed of, for example, PI / PR. The lens driving actuator 44 is an actuator for driving the focusing lens 42 in the optical axis direction for focusing based on the driving control from the lens controlling microcomputer 41, and for example, a DC motor or the like is used. Aperture position detector 46
Detects the current position state of the aperture blade 45 and supplies the position information to the lens control microcomputer 41. The aperture position detector 46 is composed of, for example, PI / PR. The diaphragm driving actuator 47 includes a diaphragm blade 45.
Is controlled based on instruction control given from the camera control microcomputer 21 via the lens control microcomputer 41.
Is driven to control the light amount of the subject light. For example, a DC motor or a stepping motor is used.

The variable power lens 48 includes a zoom operation unit 49
The focal length changing operation is performed by moving the zoom lens 49 in the optical axis direction by the drive control from the zoom operation unit 49. Requires an electric motor, an actuator, a switch, and the like. The variable power lens position detection unit 50 detects the position of the variable power lens 48 on the optical axis, and transfers the detection information to the lens control microcomputer 41. The variable power lens position detection unit 50 is, for example, a PI / P
R and the like.

The lens data communication section 51 is an electric contact of an interface for performing communication between the lens control microcomputer 41 and the camera control microcomputer 21 in the camera body.

FIGS. 3 to 6 show the internal configuration and external configuration of the camera body of the anti-shake camera of the present invention having such a configuration.
This will be described with reference to FIG. First, the internal configuration and external configuration of the camera will be described with reference to FIGS. 3 is a cross-sectional side view of the camera, FIG. 4 is a perspective view of the camera as viewed from the back, and FIG. 5 is a front perspective view of a state in which a taking lens is detached from the camera body.

The anti-vibration camera according to the present invention comprises a camera body (camera body) 1 and a photographing lens 2, and a lens mount 8 for mounting the photographing lens 2 is provided substantially at the center of the front of the camera body 1. . A focusing lens 42, an aperture blade 45, and a variable power lens 48 are disposed on the photographing lens 2 mounted on the lens mount 8 of the camera body 1, and the focusing position detection unit 43 (not shown), An actuator 44, an aperture position detection unit 46, an aperture drive actuator 47, a variable power lens position detection unit 50, and a zoom operation unit 49 are provided, and the lens control microcomputer 41 and a lens data communication unit 51 are provided.

In the vicinity of the lens mount 8 on the front of the camera body 1, the blur correcting optical unit is provided so as to perform blur correction in a direction perpendicular to the optical axes of the focusing lens 42 and the variable power lens 48 of the photographing lens 2. 14 are provided,
A quick return mirror 22 is provided on the optical axis behind the blur correction optical unit 14. The quick return mirror 22 is arranged to reflect and guide the subject light incident from the photographing lens 2 to a finder optical system 3 provided above the camera body 1 in the figure. In the mirror-up state (shown by a dotted line 22 'in the figure)
). A shutter device 25 is arranged behind the quick return mirror 22 on the optical axis, and a film 27 is arranged behind the shutter device 25 on the optical axis. The subject light reflected by the quick return mirror 22 is projected on the screen 4, and the subject image projected on the screen 4 is converted into a normal image formed by a pentaprism, and the subject is confirmed by the photographer through the eyepiece 5. Is made. The camera body 1
A correction drive actuator 13 and a correction encoder 15 are disposed around the shake correction optical unit 14 disposed at the position. Further, in the camera body 1, when the photographing lens 2 is mounted on the lens mount 8, a body side communication unit 32 connected to the lens data communication unit 51 and the camera control microcomputer 21 are arranged. Various drive units and detection units (not shown) connected to the camera control microcomputer 21 are arranged, and the camera shake control microcomputer 1
1 is arranged. Furthermore, the shake detection sensor 12 is arranged on the back side of the camera body 1.

In the upper part of the central part of the camera body 1,
A strobe storage unit 6 is provided, and pops up when a subject has low luminance and is irradiated with strobe light. A release button 9 is arranged on the upper left side of the camera body 1 when viewed from the front, and on the right side when viewed from the back. This release button 9
Is provided with a grip 7 so that a photographer can easily hold the camera body 1. The shake detection sensor 12 includes, for example, a shake detection sensor 12X for detecting shake on the horizontal axis (X direction) and a shake detection sensor 12Y for detecting shake on the vertical axis (Y direction) inside the grip 7. I have. On the outer peripheral surface of the lens mount 8 on the front of the camera body 1, a lens exchange switch 30 used for removing the photographing lens 2 from the lens mount 8 when exchanging the photographing lens 2 is arranged.

Next, referring to FIG.
4 will be described. FIG. 6A shows a drive mechanism. In the image stabilization camera of the present invention, a shake correction optical unit 14 is used in accordance with a camera shake state using a gimbal mechanism.
Is tilted so that the displacement of the image by the parallel glass plate offsets the displacement of the image due to blur. The horizontal axis (hereinafter simply referred to as X-axis in the X-axis direction in the figure) and the vertical axis (hereinafter simply referred to as Y-axis in the Y-axis direction in the figure)
Are the same, and therefore, only the mechanism for correcting blurring around the Y axis on the horizontal axis (X-axis direction) will be described.

The blur correction optical section 14 is a parallel glass plate and is held by the inner frame 68. This inner frame 68
It is fixed to the rotating shaft 67X and the gear 62X. further,
The inner frame 68 is rotatably held with respect to the outer frame 69. The gear 62X meshes with the worm gear 61X, and the shaft of the worm gear 61X is connected to the correction drive actuator (X) 13X. The rotation of the correction drive actuator (X) 13X is controlled by the worm gear 6.
The light is transmitted to the blur correction optical unit 14 held by the inner frame 68 via the 1X, the gear 62X, and the rotation shaft 67X, and is rotated around the Y axis of the X axis. A disk 63X having a plurality of slits formed at equal intervals is fixed to the rotation shaft of the correction drive actuator (X) 13X, and a PI / PR 64X is arranged with the disk 63X interposed therebetween. . When the correction drive actuator (X) 13X rotates, a pulse signal is generated each time the slit of the disk 63X crosses the PI / PR64X, and the rotation speed of the correction drive actuator (X) 13X is detected based on the pulse signal. The amount of rotation of the parallel glass plate serving as the shake correction optical unit 14 is detected. A groove 65X is formed in a plane portion of the gear 62X, and a pin 66X that fits into the groove 65X is implanted in the outer frame 69. The gear 62X and the inner frame are formed by the groove 65X and the pin 66X. The rotation range of 68 is regulated.

That is, the forward and reverse rotation of the correction drive actuator 13X causes the rotation of the inner frame 68 holding the blur correction optical unit 14 to rotate about the Y axis around the X axis through the worm gear 61X and the gear 65X. . The rotation of the inner frame 68 around the Y axis is restricted by the pins 66X fitted into the grooves 65X, and the amount of rotation is detected by a pulse signal from the disk 63X detected by the PI / PR64X. It should be noted that the mechanism for correcting the shake in the Y-axis direction (shake around the X-axis) is exactly the same as that in the case of the X-axis direction.

The above-mentioned camera shake correction mechanism comprises an inner frame 68 and an outer frame 69.
The left and right sides of the photographing lens 2 of the camera are provided with a grip 7, which is a part that the photographer holds with his right hand, Although not shown, windows such as an auxiliary light unit for auto focus are often arranged on the left part, and there are restrictions on space, and it is difficult to install the correction mechanism on the left part. Further, when viewed from the front of the photographing lens 2 of the camera, the lower part has no space in terms of space, and the upper part has room in terms of space for providing a projection for installing a strobe light emitting unit and the like. . Note that the arrangement of the camera shake correction mechanism in the camera body 1 is not limited to the above-described arrangement, and the installation location can be set according to the arrangement relationship of various mechanisms installed in the camera body. is there.

Next, with reference to FIG. 6B, the theory of blur correction using a parallel glass plate for the blur correction optical unit 14 will be described. The solid line in the figure shows the case without blur correction,
The blur correction optical unit 14 using a parallel glass plate is positioned perpendicular to the optical axis. At this time, the light passing through the center forms an image at the position A on the film 27. On the other hand, the dotted line in the figure shows the case where the camera is tilted by the angle θ, and the light passing through the center of the blur correction optical unit 14 is shifted from A on the film 27 by α
An image is formed at the position.

The blur correction control microcomputer 11 controls the tilt of the blur correction optical unit 14 so as to cancel the shift α of the image formation position on the film due to camera shake.

The operation of the anti-shake camera having the above configuration will be described with reference to FIGS. In FIGS. 7 to 19, operation parts related to camera shake correction according to the present invention will be mainly described, and operation parts not directly related to the present invention will be omitted. First, operation control by the camera control microcomputer will be described with reference to FIGS.

In FIG. 7, in step S101, initial settings of the camera control microcomputer 21 are performed, and in step S102, flags of parts related to the present invention are initialized. This flag indicates that the camera power switch 36
The flag F_PW indicating the state of
Is set to "1" when is in the off state, and is set to "0" when is in the on state. The initial setting value is set to F_PW = 1 where the camera power switch 36 is off. Further, a flag F_LENS indicating the mounting state of the photographing lens 2 on the lens mount 8 of the camera body 1 is set on the photographing lens 2.
Is set to "1" when the device is not mounted, and "0" is set when the device is mounted. The initial set value is F_L when the photographing lens 2 is not attached.
Set ENS = 1. Further, a shooting mode setting unit 33
Flag F_MOD indicating that the camera shake correction mode is selected and input among the various shooting modes of the camera input from
E is set to “1” when the camera shake correction mode is not selected, and is set to “0” when the camera shake correction mode is selected and input. The initial setting value is F in a state where the camera shake correction mode is not selected.
Set _MODE = 1.

Next, in step S103, it is determined whether or not the camera power switch 36 has been turned on or off. If it is determined that the camera power switch 36 has been operated, it is determined in step S105 whether the camera power switch 36 has been operated from the off state to the on state. If it is determined that the camera power switch 36 has been operated from the off state to the on state, step S106 is performed. To set the flag F_PW = 0 indicating the state of the camera power switch 36 to 0.

If it is determined in step S103 that the camera power switch 36 has not been operated, the process proceeds to step S103.
At 104, the flag F_PW = 0 of the camera power switch 36
Is determined, that is, if F_PW = 0 indicating that the camera power switch 36 is on, step S10
7 are executed, and when it is determined that the flag F_PW is not 0 and the camera power switch 36 is F_PW = 1, which is an off state, the process returns to step S103. If it is determined in step S105 that the camera power switch 36 has been operated from the ON state to the OFF state, step S19 is performed.
1 and subsequent steps are executed.

In step S106 or S104, the flag F_PW indicating the ON state of the camera power switch 36
If it is set or confirmed to be “0”, the mounting state of the photographing lens 2 on the lens mount 8 of the camera body 1 is checked by the lens mounting detecting unit 31 in step S107, and whether the photographing lens 2 is mounted in step S108. Judge. If it is determined that the photographic lens 2 is mounted, steps S114 and subsequent steps are executed. If it is determined that the photographic lens 2 is not mounted, a flag F_LENS = 1 indicating the non-mounted state of the photographic lens 2 is set in step S109. .
Next, in step S110, the camera shake mode selection setting state flag F_MODE is determined. If it is determined that F_MODE = 1 without selection of the camera shake correction mode, step S12 is performed.
3 is executed, and F_M with camera shake correction mode selection
If it is determined that ODE = 0, an instruction to stop the camera shake detection and the shake correction operation is given to the shake control microcomputer 11 in step S111.

In response to the state in which the taking lens 2 is not mounted on the lens mount 8 in step S111, the microcomputer 11 for blur control controls the blur correction optical unit 14 for protection.
To stop the motion detection / correction operation and lock (lock) the motion correction optical unit 14. this is,
This is to prevent the blur correction optical unit 14 from being damaged when the user accidentally touches the blur correction optical unit 14 with the taking lens 2 removed.

In the checking of the mounting state of the photographing lens 2 in step S107, not only whether the photographing lens 2 is mounted on the lens mount 8 of the camera body 1 but also a predetermined mount even if the photographing lens 2 is mounted. If it is not securely mounted at the position and it is not in the predetermined mounting state, it is also checked.
At 108, it is determined that the photographic lens is not mounted, so that the blur correction optical unit 14 can be prevented from being damaged due to uncertain mounting other than mounting the photographic lens 2 at a predetermined position.

Next, in step S112, the vibration control microcomputer 11 controls the drive of the correction optical system lock unit 16 and waits until the lock of the shake correction optical unit 14 and the hand shake detection and the shake correction operation are stopped. In step S113, it is determined whether a response to stop the blur detection and the correction operation has been received from the blur control microcomputer 11, and if there is no response to stop the blur detection and the correction operation, the process returns to step S112.
When the shake correction optical unit 14 is locked and a response indicating that the detection of the camera shake and the stop of the correction operation have been completed is confirmed, step S123 and subsequent steps are executed.

If it is determined in step S108 that the photographic lens 2 is mounted on the lens mount 8, the flag F_LENS = 0 indicating the mounted state of the photographic lens 2 is set in step S114, and in step S115, It is determined whether the camera shake correction mode switch of the shooting mode setting unit 33 has been operated. If it is determined that the camera shake correction mode switch has not been operated, step S123 and subsequent steps are executed. If it is determined that the camera shake correction mode switch has been operated, step S116 and subsequent steps are executed.

Next, in FIG. 8, it is determined in step S116 whether the operation of the camera shake correction mode switch has been switched from off to on. If it is determined in step S116 that the operation has been changed from the on state to the off state, step S1 is performed.
At 17, an instruction to stop hand shake detection and shake correction operation is given to the shake control microcomputer 11. At step S 118, the shake control microcomputer 11 drives and controls the correction optical system lock unit 16 and Waits until the lock, the camera shake detection, and the shake correction operation are stopped, and in step S119, it is determined whether a completion response of the stop of the shake detection and the correction operation is received from the shake control microcomputer 11, and If there is no response to stop the correction operation, the process returns to step S118, the blur correction optical unit 14 is locked, and if a response to the effect that the detection of the camera shake and the stop of the correction operation have been confirmed is confirmed, the hand in step S120 is confirmed. The flag F_MODE, which indicates that there is no blur correction mode, is set to 1 and step S
123 and subsequent steps are executed.

The execution of unnecessary blur correction when the camera shake correction mode is not selected is stopped by the blur detection / correction control for the blur control microcomputer 11 and the lock instruction of the blur correction optical unit 14 in step S117. In addition, unnecessary power consumption in the blur detection / correction block is prevented.

If it is determined in step S116 that the camera shake correction mode switch has been operated from off to on, in step S121, a shake detection and shake correction start instruction is given to the shake control microcomputer 11. In step S122, the flag F_MOD indicating that the blur correction mode is present
Set E = 0.

Next, in step S123, a flag F_ indicating that the photographing lens 2 is mounted on the lens mount 8 is set.
It is determined whether or not LENS = 0. Shooting lens 2
If it is determined that F_LENS = 1 indicating the non-wearing state, step S131 and subsequent steps are executed, and if it is determined that F_LENS = 0 with the taking lens 2 being mounted, the lens control microcomputer 41 is determined in step S124. Then, communication for requesting transmission of the current focal length information of the photographing lens 2 is performed, and in step S125, a response from the lens control microcomputer 41 is waited. It is determined whether or not there is, and if there is no transmission of focal length information,
Returning to step S125, when the focal length information is transmitted, the focal length information transmitted from the lens control microcomputer 41 is stored in the memory of the camera control microcomputer 21 in step S127. This focal length information is also used for determining the exposure condition based on the photometry result, and for calculating the image blur state based on the camera shake state in the blur control microcomputer 11.

Next, in step S128, it is determined whether or not the camera shake correction mode flag F_MODE = 0. If F_MODE = 0 with the camera shake correction mode, in step S129, is there any difference between the focal length information stored in the camera control microcomputer 21 in step S127 and the focal length information stored before that? Determine whether or not. If there is a difference between the previously stored focal length information and the focal length information stored in step S127, the difference in focal length information is received in step S130. Communication for sending to the blur control microcomputer 11 is performed, and step S131 and subsequent steps are executed. In the above step S128, the flag F_M in the state without the camera shake correction mode
It is determined that ODE = 1 or transmitted from the lens control microcomputer 41 in step S129, and
If it is determined that there is no difference between the focal length information stored in step 7 and the focal length information stored before that, step S131 and subsequent steps are executed.

In step S131, a photometric operation of a subject is performed by a photometric sensor (not shown), and exposure conditions such as a shutter speed and an aperture value are calculated and determined.

Next, in FIG. 9, in step S132,
A shooting preparation instruction operation by a shooting preparation instruction unit (1R) 34;
It is determined whether the so-called first release switch 1R has been turned on. If it is determined that the photographing preparation instructing unit 34 has been turned off, the process returns to step S103. If it is determined that the photographing preparation instructing unit 34 has been turned on, in step S133, the photographing lens 2
It is determined whether or not the flag F_LENS = 0 indicating the mounting state of. Flag F_LE for taking lens 2 attached
If it is determined that NS = 0, step S134 and subsequent steps are executed, and the flag F_LENS indicating that the photographing lens is not mounted is set.
If it is determined that = 1, step S146 and subsequent steps are executed.

In step S134, it is determined whether or not a flag F_MODE = 0 indicating that the camera shake correction mode in the photographing mode is selected. If the flag F_MODE = 1 has not been selected and the camera shake correction mode has not been selected, step S136 and subsequent steps are executed. If the flag F_MODE = 0 is determined, the camera shake correction mode is selected and a shooting preparation instruction is received in step S135. Then, communication for instructing the microcomputer 11 for shake control to start shake correction driving is performed.

Next, in step S136, a focus detection operation and a focus detection calculation are performed by a focus detection sensor (not shown). Is instructed to drive, and step S13 is performed.
At step 8, the focus detection operation is performed again. This step S138
After the refocusing is detected, it is determined in step S139 whether or not the focus state by the driving of the focusing lens 42 is in a focused state. S148 and subsequent steps are executed.

In step S140, the lens control microcomputer 41 receives the in-focus state of the focusing lens 42 and
Then, communication for giving an instruction to stop the driving of the focusing lens 42 is performed with respect to the camera.

Next, in step S142, communication for transmitting aperture information at the time of photographing is performed to the lens control microcomputer 41. In step S143, the flag F_MODE = 0 when the photographing mode is set to the camera shake correction mode is set. Judge whether there is. Flag F_ without camera shake correction mode setting
If it is determined that MODE = 1, step S146 and the subsequent steps are executed, and the flag F_MOD indicating that the camera shake correction mode has been set is set.
If it is determined that E = 0, it is determined in step S144 whether or not the current focal length is within a predetermined range.

The determination of the focal length is naturally limited in the operating range of the shake correction optical unit 14 for correcting camera shake, that is, in the range in which correction can be performed. May be used up,
If the correction is at the end of the correction range in which the correction can be performed accurately, the correction may not be performed effectively, particularly when shooting at a long time. When the focal length is short, even if there is no problem with the correction range, the blur correction optical unit 1 for correction is used.
If the drive amount of No. 4 is too large, there is a problem that image deterioration in a portion unrelated to blur correction becomes large.

Therefore, in the image stabilizing camera of the present invention, the blur correction operation is restricted in the above case. Actually, it is controlled by a blur control microcomputer 11 described later. As a result of the determination in step S144, if the camera shake correction is out of the predetermined correction range, the camera state notification unit 37 is notified (warned) in step S145, and the camera shake correction is within the predetermined range. In step S146, steps after step S146 are executed.

If it is determined in step S139 that the focusing state by the driving of the focusing lens 42 is in focus, it is determined that the camera is not in focus. Perform the increment. This is for issuing a warning when the in-focus state has reached a predetermined number of times (a predetermined time). Note that this counter may be initialized somewhere before performing the processing in step S137. Next, in step S149, it is determined whether the value of the counter is equal to or greater than a predetermined value. That is, it is determined whether the out-of-focus state has passed a predetermined time. If the out-of-focus state is within the predetermined value, the process returns to step S137. If the out-of-focus state is equal to or more than the predetermined value, the camera state notification unit 37 is notified of the out-of-focus state in step S150. Next, in step S151, it is determined whether or not the shooting preparation instruction operation by the shooting preparation instruction unit (1R) 34 has been canceled (off). If it is determined that the shooting preparation instruction unit 34 is in the on state, the process proceeds to step S151. Returning to S137, if it is determined that the photographing preparation instructing unit 34 is turned off, Step S185 and the subsequent steps are executed.

Next, in FIG. 10, step S146 is performed.
Then, it is determined whether or not a shooting start instruction operation has been performed by the shooting start instruction unit (2R) 35. When a shooting start instruction is given by the shooting start instruction unit 35 (ON = 2 RON),
If step S152 and subsequent steps are executed and there is no shooting start instruction (OFF = 2ROFF), it is determined in step S147 whether or not the shooting preparation instruction has been issued (OFF) by the shooting preparation instruction unit (1R) 34. If it is determined that the shooting preparation instruction unit 34 is turned on (1 RON), the process proceeds to step S146.
When the photographing preparation instruction unit 34 is determined to be off (1ROFF) or the photographing preparation instruction unit 34 is determined to be off (1ROFF) in step S151, the lens mount 8 of the photographing lens 2 is determined in step S185. The flag F_LENS indicating the state of attachment to the camera is determined, and if it is determined that the flag F_LENS = 1 in which the photographing lens 2 is not attached is returned, the process returns to step S103, and it is determined that the flag F_LENS = 0 in which the photographing lens 2 is attached. Then
It is determined that the shooting preparation instruction has been released, and step S
At 186, instruction communication for stopping the driving of the focusing lens 42 is performed to the lens control microcomputer 41, and at step S187, it is determined whether or not the flag F_MODE = 0 indicating the selected state of the camera shake correction mode. If it is determined that the flag F_MODE = 1 is not set, the process returns to step S103, and if it is determined that the flag F_MODE = 0 in which the camera shake correction mode is selected,
In step S188, it is determined that the shooting preparation instruction has been released, and an instruction communication for stopping the driving of the blur correction optical unit 14 is performed to the blur control microcomputer 11, and step S1 is performed.
At step 89, a response from the blur control microcomputer 11 to the blur correction drive stop of the blur correction optical unit 14 is awaited, and step S
At 190, it is determined whether or not there is a response from the blur control microcomputer 11 to stop the blur correction drive of the blur correction optical unit 14. If there is no response, the process returns to step S189. If there is a response, the process returns to step S103. Return.

If it is determined in step S146 that the photographing start instruction unit (2R) 35 has been turned on, step S146 is executed.
At 152, a flag F_LENS indicating the mounting state of the photographing lens 2 to the lens mount 8 is determined, and the photographing lens 2 is determined.
F_LENS = 1 indicating the state where is not mounted
Is determined, step S158 and the subsequent steps are executed. If the flag F_LENS = 0 indicating that the photographing lens 2 is mounted on the lens mount 8, the process proceeds to step S15.
A flag F_MO indicating the setting state of the camera shake correction mode at 3
It is determined whether or not DE = 0, and if it is determined that the flag F_MODE = 1 in the state where the camera shake correction mode is not set, the process from step S157 is executed, and the flag F_MODE = the state where the camera shake correction mode is set. If it is determined to be 0, a quick return mirror 22 for starting exposure is sent to the blur control microcomputer 11 in step S154.
When the mirror-up drive is performed, instruction communication for retracting the shake correction optical unit 14 into a predetermined area is performed.

In the image stabilizing camera of the present invention, the blur correction optical unit 14 is disposed between the lens mount 8 and the quick return mirror 22. With such an arrangement, the distance (flange back) from the surface of the lens mount 8 to the film 27 increases, which leads to an increase in the size of the camera. To prevent the camera from becoming too large, use a lens mount 8
And the quick return mirror 22
It is necessary to reduce the interval until. In other words, the lens mount 8, the blur correction optical unit 14, and the quick return mirror 22 may be arranged close to each other, but this time, when the blur correction optical unit 14 operates for blur correction, 8 and quick return mirror 2
In addition to the fact that the camera touches the camera 2 and cannot perform a stable shake correction operation, in the worst case, the contact of the shake correction optical unit 14 may damage the components and make it impossible to perform shooting. Therefore, in the anti-shake camera of the present invention, when the quick return mirror 22 operates, the blur correction optical unit 14
The operation is performed in a region that does not come into contact with the surface or the quick return mirror 22. Note that the blur correction optical unit 14 does not always retreat to a fixed position. If the movement (up / down) of the quick learn mirror 22 is not hindered, the blur correction operation is continued and the quick return mirror 22 is stopped. If there is an obstacle to the operation of the above, it is retracted to a predetermined retract position. Thereby, occurrence of an unnecessary time lag is prevented.

In step S154, a response from the blur control microcomputer 11 to the completion of the retraction drive control of the blur correction optical unit 14 into the predetermined area is waited in step S155, and in step S156, the blur correction optical unit 14 It is determined whether or not a response to the effect of the operation or the evacuation has been received. If there is no answer that the blur correction optical unit 14 has been driven or retracted within the predetermined range, the process returns to step S155. If there is an answer that has been driven or retracted within the predetermined range, at step S157, a predetermined An aperture drive instruction for narrowing the aperture blades 45 to the aperture value of is given to the lens control microcomputer 41. Note that this narrowing down instruction may be performed during the steps S153 to S156.

Next, in step S158, the mirror drive unit 23 is driven and controlled to drive the quick return mirror 22 up, and in step S159, it is determined whether or not the mirror up operation of the quick return mirror 22 has been completed. A determination is made based on the detection result from the mirror state detection unit 24. If it is determined that the up operation of the quick return mirror 22 is not completed, the process returns to step S158, and it is determined that the up operation of the quick return mirror 22 is completed. In step S160, the flag F_LENS indicating the mounting state of the photographing lens 2 is determined. If it is determined that the flag F_LENS = 1 indicating that the photographing lens 2 is not mounted, steps S163 and subsequent steps are executed, and the photographing lens 2 is mounted. If it is determined that the flag F_LENS = 0, the process proceeds to step S161. It is determined whether blur correction mode is selected, the flag f_mode = 1 is not selected camera shake correction mode is determined to be set,
Step S164 and subsequent steps are executed. If it is determined that the flag F_MODE = 0 for selecting the camera shake correction mode has been set, then in step S162, the above-described step S164 is performed.
In response to the completion of the raising operation of the quick return mirror 22 in 159, the microcomputer 11 controls the blur control microcomputer 11 to restrict the retraction operation of the blur correction optical unit 14 in step S154. The instruction communication for returning to the state is performed to the microcomputer 11 for shake control. Next, in step S163, the shutter drive unit 26 is driven, the shutter device 25 is driven to perform the shutter drive, and the exposure of the film 27 to the subject light is started.

Next, in FIG. 11, step S164
Then, it is determined whether or not the predetermined exposure time has elapsed. If the predetermined exposure time has not elapsed, it is determined again that the exposure time has elapsed. If it is determined that the predetermined exposure time has elapsed, step S165 is performed. Then, the drive of the shutter device 25 is terminated via the shutter drive unit 26, and the exposure is completed.

Next, in step S166, the photographing lens 2
A flag F_LENS indicating the mounting state of is determined. If it is determined that the flag F_LENS = 1 that the photographing lens 2 is not mounted is performed, the process from step S178 is performed. An aperture opening drive instruction communication for opening the aperture blade 45 is performed to the lens control microcomputer 41, and step S1 is performed.
At 68, a flag F_ indicating the selected state of the camera shake correction mode
MODE is determined. If it is determined that the flag F_MODE = 1 where the camera shake correction mode has not been selected, step S is performed.
If the flag F_MODE = 0 indicating that the camera shake correction mode has been selected is determined to be 0, the quick return mirror 2 for ending the exposure is determined in step S169.
In the second mirror down drive, instruction communication for retracting the shake correction optical unit 14 into a predetermined area is performed to the shake control microcomputer 11. The reason for this is that the aforementioned S154
This is the same as that described in the above.

Next, at step S170, the blur control microcomputer 1 responds to the instruction communication at step SS169.
In step S171, it is determined whether or not a response indicating that the shake correction optical unit 14 has been retracted into the predetermined area or operating within the predetermined area has been received. If the evacuation is not performed, the above-described step S17 is performed.
When the operation returns to 0 and the operation within the predetermined area or the retreat is confirmed, the quick return mirror 22 is driven down by the mirror driving unit 23 in step S172, and the operation proceeds to step S173.
The mirror state detection unit 24 detects the down drive of the quick return mirror 22, and returns to step S172 if the quick return mirror 22 is not completely down. If it is confirmed that the down is completed, step S174.
The flag F_MO indicating the selection state of the camera shake correction mode
DE is determined, and if it is determined that the flag F_MODE = 1 where the camera shake correction mode is not selected, step S176 is performed.
The following steps are executed, and when it is determined that the flag F_MODE in which the camera shake correction mode is selected is 0, step S17 is performed.
In response to the completion of the mirror down operation in step 5,
An instruction communication for returning the state in which the camera shake correction operation is limited to the normal camera shake correction operation in 69 is performed to the camera shake control microcomputer 11.

Next, in FIG. 12, step S176
In step S177, the film drive unit 28 drives the winding of the film 27 in response to the completion of the exposure. In step S177, it is determined whether the driving of winding the film 27 is completed. This is performed based on the output from the film state detection unit 29,
If the winding of the film 27 has not been completed, the process returns to step S176. When the winding of the film 27 is completed, the end of exposure is received in step S178, and the shooting start instruction operation by the shooting start instruction unit (2R) 35 is canceled ( OFF = 2ROFF) is determined. It is repeatedly determined that the photographing start instructing unit 35 is in the ON state, and if it is determined that the photographing start instructing unit 35 is in the OFF state (2ROFF), in step S179, the photographing preparation instructing unit (1R) 3
Release of shooting preparation instruction operation by 4 (OFF = 1ROFF)
It is determined whether or not the photographing preparation instructing unit 34 is on, and the above steps and 178 are repeated. If it is determined that the photographing preparation instructing unit 34 is off (1ROFF), the photographing lens is determined in step S180. The flag F_LENS indicating the mounting state of No. 2 is determined, and if it is determined that the flag F_LENS = 1 in which the photographic lens 2 is not mounted, the process returns to step S103, and it is determined that the flag F_LENS = 0 in which the photographic lens 2 is mounted. Then, step S
181 indicates a flag F_ indicating the selected state of the camera shake correction mode.
MODE is determined, and if it is determined that the flag F_MODE in which the camera shake correction mode is not set is 1, the process returns to step S103. If it is determined that the flag F_MODE in which the camera shake correction mode is selected is 0, In step S182, in response to the release of the shooting preparation instruction operation (1ROFF), instruction communication for stopping the correction driving of the blur correction optical unit 14 is performed to the microcomputer 11 for blur control. This is performed to lock the shake correction optical unit 14 at a predetermined position since the shooting preparation instruction operation has been cancelled, and to prevent unnecessary power consumption.

Next, in step S183, a response to the correction drive stop from the shake control microcomputer 11 is waited, and in step S184, it is determined whether or not there is a response communication from the shake control microcomputer 11 to the completion of the correction drive stop. Make a decision. If there is no response to the completion of the correction driving, the process returns to step S183.
Return to 103.

Next, referring to FIG.
If it is determined in 5 (see FIG. 7) that the camera power switch 36 has been operated from on to off, in step S191, a flag indicating the state of the camera power switch 36 is set to F_PW =
1, the state of attachment of the taking lens 2 to the lens mount 8 is checked in step S192, and step S1 is performed.
At 93, it is determined whether or not the photographing lens 2 is attached. If it is determined in step S193 that the taking lens 2 is not attached, a flag F_LENS = 1 indicating the attached state of the taking lens 2 is set in step S195, and step S103 is performed.
When it is determined that the taking lens 2 is attached, the flag F_LENS = 0 indicating the attached state of the taking lens 2 is set in step S194.

Next, in step S196, the photographing mode setting section 33 determines whether the camera shake correction mode is selected or not, and determines a flag indicating the camera shake correction mode. When the flag of the camera shake correction mode is F_MODE = 1, it is determined that the camera shake correction mode is not selected, and the above-described step S is performed.
103, the flag of the camera shake correction mode is set to F_MOD
If E = 0, it is determined that the camera shake correction mode has been selected, and in step S197, the camera shake detection operation in the camera shake detection / correction block is stopped and the camera shake correction optical unit 14 is stopped.
Is communicated to the shake control microcomputer 11 to instruct locking (locking).

The stop of the shake detection and the locking of the shake correction optical unit 14 are performed when the power of the camera is turned off.
Can be removed from the lens mount 8 at any time. Further, when the power is turned off, the mounting state of the photographing lens 2 cannot be detected. In this state, when the user accidentally touches the blur correction optical unit 14 when or after removing the taking lens 2 from the lens mount 8,
If the shake correction optical unit 14 is movable, it may be damaged. The blur correction optical unit 14 is locked to prevent damage.

Next, in step S198, the blur control microcomputer 11 stops the blur detection operation and the
Waiting for the lock completion reply, it is determined in step S199 whether or not there has been a lock completion reply communication from the shake control microcomputer 11. If there is no reply communication, the flow returns to step S198, and the reply communication is performed. If there is, the process returns to step S103.

Next, the control operation of the blur control microcomputer 11 will be described with reference to FIGS.

In FIG. 14, in step S201,
Initial setting of the camera shake control microcomputer 11 is performed, and in step S202, a flag F_MODE indicating whether or not the camera shake correction mode is selected by the shooting mode setting unit 33.
Make the initial settings for. The flag when the camera shake correction mode is not selected is set to F_MODE = 1, and the flag when the camera shake correction mode is selected is F_MODE =
Set to 0. In the initial setting in step S202, the camera shake correction mode flag is set to F_MODE = 1.

Next, in step S203, communication with the camera control microcomputer 21 is performed, and in step S204
Then, it is determined whether or not communication of a command to start a camera shake detection operation from the camera control microcomputer 21 has occurred. If it is determined that the camera control microcomputer 21 has not issued an instruction to start a camera shake detection operation, the process returns to step S203. This shake detection start instruction is a shake detection start instruction communicated to the shake control microcomputer 11 in step S121 of the camera control microcomputer 21 described above with reference to FIG.

Next, in step S205, the camera shake correction mode is selected or the camera shake correction mode flag is set to F_M.
It is determined whether or not ODE = 1, and if the flag F_MODE = 0 with the camera shake correction mode selected, step S209 and subsequent steps are executed. If the flag F_MODE = 1 without the camera shake correction mode selection is set, then Step S206
Then, in order to start the shake detection operation in response to the shake detection operation start instruction, the power supply operation to the shake detection sensor (X) 12X and the shake detection sensor (Y) 12Y is performed. Next, in step S207, an initialization operation (setting of an initial value and a constant) for a continuous shake detection operation based on the outputs of the shake detection sensors 12X and 12Y is performed. Flag F_MODE = 0 is set.

Next, in step S209, the operation of a control period timer for controlling the camera shake detection and the correction operation at a constant period is started. This is because, in order to accurately detect a constantly changing camera shake state and accurately correct an image shake state due to camera shake, it is necessary to perform control at a constant cycle. Here, the cycle time may be, for example, 1 millisecond (mSEC).

Next, in step S210, the shake control microcomputer 11 samples the outputs of the shake detection sensors (X) 12X and (Y) 12Y. Specifically, it converts the analog blur signal detected by the blur detection sensors (X, Y) 12X, 12Y into a digital blur signal, and samples the digital blur signal. In addition,
The processing relating to blur detection / correction is performed on the horizontal axis (X) and the vertical axis (Y) of the surface of the film 27 with the same sampling.

Next, in step S211, a frequency component signal which is not related to camera shake which is mixed in the shake signals output from the shake detection sensors (X, Y) 12X, 12Y is removed (filter processing). The removal of the frequency component unrelated to the camera shake is performed by software stored in the camera shake control microcomputer 11.

Next, in step S212, communication with the camera control microcomputer 21 is performed, and in step S213,
It is determined whether or not the communication content with the camera control microcomputer 21 in step S212 is an instruction to stop the blur detection correction operation. If it is determined that the instruction from the camera control microcomputer 21 is the instruction to stop the blur detection correction operation, step S22
If 0 or later is executed and it is determined that the instruction is not an instruction to stop the shake detection and correction operation, step S214 and subsequent steps are executed.
The stop instruction of the shake detection correction operation is issued in step S in FIG.
111, step S118 in FIG. 8, and step S197 in FIG.

If it is determined in step S213 that the instruction from the camera control microcomputer 21 is not an instruction to stop the shake detection / correction operation, the flow advances to step S214.
It is determined whether or not the instruction content from the camera control microcomputer 21 at 212 is an instruction to stop the blur correction operation. The instruction to stop the shake correction operation corresponds to the instruction from the camera control microcomputer 21 in step S182 in FIG. 12 and step S188 in FIG.

If it is determined in step S214 that the instruction is to stop the blur correction operation, steps S229 and subsequent steps are executed. If it is determined that the instruction is not to stop the blur correction operation, in step S215, the camera in step S212 is determined. It is determined whether or not the content of communication with the control microcomputer 21 is an evacuation instruction of the blur correction operation. The evacuation instruction of the shake correction operation corresponds to the instruction from the camera control microcomputer 21 in step S154 in FIG. 10 and step S169 in FIG.

If it is determined in step S215 that the instruction is a retreat instruction for the blur correction operation, steps S237 and subsequent steps are executed. If it is determined that the instruction is not a retreat instruction for the blur correction operation, in step S216, the processing in step S212 is performed. It is determined whether the content of communication with the camera control microcomputer 21 is an instruction to start a blur correction operation. The instruction to start the shake correction operation corresponds to the instruction from the camera control microcomputer 21 in step S135 in FIG. 9, step S162 in FIG. 10, and step S175 in FIG.

If it is determined in step S216 that the instruction is a start instruction for a blur correction operation, steps S250 and subsequent steps are executed. If it is determined that the instruction is not an instruction to start a blur correction operation, in step S217, the process proceeds to step S212. It is determined whether or not the communication content with the camera control microcomputer 21 relates to the current transmission of the photographing focal length information of the photographing lens 2. This transmission of the photographing focal length information corresponds to step S130 in FIG.

If it is determined in step S217 that the focal length information is to be transmitted, steps S218 and subsequent steps are executed. If it is determined that the focal length information is not to be transmitted, steps S219 and subsequent steps are executed. Step S218
Then, the current photographing focal length information is stored according to the communication content from the camera control microcomputer 21. This photographing focal length information is used when grasping the image blur state due to camera shake and calculating the blur correction target amount.

Next, in step S219, it is determined whether or not a predetermined time has elapsed from the control cycle timer started in step S209. If the predetermined time has elapsed, the process returns to step S209. If the predetermined time has not elapsed, the determination of the elapse of the predetermined time is repeated. As a result, the camera shake detection / correction operation is performed at a fixed cycle, and the camera shake correction mode is set to OFF or the shooting preparation instruction unit (1R) 34 is turned off during execution, so that the camera shake correction operation is not required. We will respond to the situation.

In the next FIG. 15, step S21
If it is determined in step 3 that an instruction to stop the shake detection correction operation has been issued, in step S220, the current shake detection sensor (X,
Y) The blur control microcomputer 11 detects with 12X and 12Y
The output of the correction drive signal corresponding to the camera shake state generated by sampling in the step is stopped. Specifically, the signals supplied from the blur control microcomputer 11 to the correction drive actuator (X) 13X and the correction drive actuator (Y) 13Y are stopped. Next, in step S221, the power supply to the shake detection sensor (X) 12X and the shake detection sensor (Y) 12Y is cut off to stop the shake detection operation. The position information is confirmed from the output (change) of the correction encoder (X) 15X and the correction encoder (Y) 15Y. This is because it is necessary to know the current position state of the shake correction optical unit 14 when performing the process (centering operation) for causing the shake correction optical unit 14 to be present at the center of the movable range.

Next, in step S223, the drive of the correction drive actuator (X) 13X and the correction drive actuator (Y) 13Y is controlled based on the current information of the shake correction optical unit 14 detected in step S222, and Perform a centering operation for positioning the center of the movable range. Next, in step S224, the current position state of the shake correction optical unit 14 is determined by the correction encoder (X) 1.
It is checked from the output (change) of the 5X and the correction encoder (Y) 15Y, and in a step S225, it is determined whether or not the blur correction optical unit 14 has reached a predetermined position (the center of the movable range). That is, it is determined whether the centering has been completed. If the centering has not been completed, the process returns to step S223. If it is determined that the centering has been completed, steps S226 and subsequent steps are executed. This step S22
Steps 3 to S225 are executed separately for each of the X axis and the Y axis.

In step S 226, step S 2
Correction optical unit 1 centered in steps 23 to S225
An operation is performed to drive and lock the correction optical system lock unit 16 at the centering position. This is the blur correction optical unit 1.
Reference numeral 4 is for preventing unnecessary operation when the blur correction operation is not performed.

Next, in step S227, information that the stop operation according to the stop instruction of the shake detection / correction operation is completed is sent to the camera control microcomputer 21, and step S228 is performed.
The flag F_MO indicating the selection state of the camera shake correction mode
DE is set to F_MODE without camera shake correction mode selection setting
Set to 1. This is the camera control microcomputer 21
This corresponds to receiving an instruction to stop the shake detection and correction operation from, and then returns to step S203.

Next, referring to FIG.
If it is determined in step 4 that the instruction is to stop the camera shake correction operation,
In step S229, in response to the instruction to stop the camera shake correction operation in step S212, first, the output of the camera shake correction drive signal according to the currently output camera shake state is stopped. Specifically, the supply of the drive control signal output from the blur control microcomputer 11 to the correction drive actuator (X) 13X and the correction drive actuator (Y) 13Y is stopped.

Next, steps S230 to S235 are executed.
Step S231 is Step S223, Step S232 is Step S224, and Step S2
33 is the same as step S225, step S234 is the same as step S226, and step S235 is the same as step S227.

In step S236, an initialization operation (setting of initial values and constants) for a continuous blur detection operation based on the outputs of the blur detection sensors (X) 12X and (Y) 12Y is performed. This is performed in order to cancel the drift variation of the shake detection sensor (X) 12X and the shake detection sensor (Y) 12Y. Then, the process returns to step S203.

Next, referring to FIG.
If it is determined in step S5 that the instruction is an evacuation instruction of the blur correction operation, the process is performed when an evacuation instruction of the blur correction operation is received from the camera control microcomputer 21 in step S212 after step S237. It should be noted that, even when the evacuation instruction of the shake correction operation is given, if the current state position of the shake correction optical unit 14 does not hinder the up / down operation of the quick return mirror 22, the normal shake correction operation is continued. Then, the calculation of the shake correction target signal for the shake correction based on the shake detection result continues regardless of the presence or absence of the evacuation instruction of the shake correction operation.

In step S237, the outputs of the shake detection sensor (X) 12X and the shake detection sensor (Y) 12Y
That is, an integration operation for converting the current camera shake (angular velocity) information into position information for image blur correction is performed, and step S2 is performed.
In 38, the current position state of the shake correction optical unit 14 is determined by the correction encoder (X) 15X and the correction encoder (Y) 15X.
Check from the output (change) of Y. This is because the current state of the shake correction optical unit 14 is the quick return mirror 2
The determination is performed to determine whether the position is in a range that hinders the operation of Step 2 and to obtain the current position information of the shake correction optical unit 14 for the normal shake correction operation.

Next, in step S 239, the blur correction optical unit 14 determines whether or not it is within a predetermined range that hinders the operation of the quick return mirror 22. The image stabilization optical unit 1 is located in a range that hinders the operation of the quick return mirror.
4 is located, steps S244 and subsequent steps are executed. If it is located in a range that does not hinder the operation of the quick return mirror 2, in step S240,
The result of the integration in step S237 and step S2
Based on the current position information of the blur correction optical unit 14 at 38 and the photographing focal length information at step S218, a target position signal to be driven for blur correction of the blur correction optical unit 14 is calculated. Next, in step S241, the shake correction target position signal calculated in step S240 is stored. This is because the blur correction optical unit 14 cannot be positioned in the original blur correction operation position state due to the retreat operation, and thus can smoothly shift to the original blur correction operation position state after the retreat operation is completed. In order to keep information.

Next, in step S242, a predetermined target position signal for retracting the shake correction optical unit 14 is set separately from the calculation of the shake correction target position signal of the shake correction optical unit 14 in step S240. The correction drive actuator (X) 13X and the correction drive actuator (Y) 1 based on the evacuation target position signal set in S243.
A signal for driving 3Y is generated and output, and the blur correction optical unit 14 is driven to the retracted position, and the process returns to step S219.

In step S239, the blur correction optical unit 1
If it is determined that the image blur correction optical unit 14 is located in a range that hinders the operation of the quick return mirror 22, in step S244, in response to the determination result in step S239, it is determined that the retraction of the blur correction optical unit 14 has been completed. The information is communicated to the camera control microcomputer 21. Note that this communication need not be performed once if it is performed once.

Next, in step S245, the result of the integration in step S237, the current position information of the blur correction optical unit 14 in step S238, and
Based on the photographing focal length information at 18, the blur correction optical unit 14
Then, a correction target position signal to be driven for the shake correction is calculated. Next, in step S246, the current shooting focal length value is determined and checked. As described in step S144 in FIG. 9, the focal length is determined because the operating range of the blur correction optical unit 14 for camera shake correction, that is, the range in which correction can be performed is naturally limited. If the distance is large, this range may be used up quickly, and the correction can be performed accurately, but when it is at the end of the correction range, especially when shooting at a long time, the correction cannot be effectively performed Cases arise. When the focal length is short, there is no problem with the correction range, but if the drive amount of the blur correction optical unit 14 for correction is too large, image deterioration in a portion unrelated to blur correction will occur. There is a problem of growing. Therefore, in the present invention, the correction range is limited in the case described above.

In step S247, it is determined whether or not the current photographing focal length is within a predetermined range. If the current focal length is within the predetermined range, steps S243 and subsequent steps are executed. It is determined whether or not the correction target position signal calculated in S245 is within a predetermined range. If the correction target position signal is within the predetermined range, steps S243 and subsequent steps are executed.
When the correction target signal is out of the predetermined range, the control (change) of the correction target position signal calculated in step S245 is performed. This is changed within a range where the above-described shake correction operation is stable and there is no image deterioration.
Thereafter, step S243 and subsequent steps are executed.

Next, referring to FIG.
If it is determined in step 6 that there has been an instruction to start a blur correction operation, steps S250 and subsequent steps are executed, and the process is performed when a shake correction operation start instruction and a shake correction continuation instruction are received.

In step S250, the blur correction optical unit 1
It is determined whether or not No. 4 is locked by the correction optical system lock unit 16, and if locked, step S
In step 251, the correction optical system lock unit 16 is controlled to release the lock of the blur correction optical unit 14, and if it is not locked, step S 252 and subsequent steps are executed.

In step S252, the outputs of the shake detection sensor (X) 12X and the shake detection sensor (Y) 12Y
That is, an integration operation for converting the current camera shake (angular velocity) information into position information for image blur correction is performed, and step S2 is performed.
At 53, the current position state of the shake correction optical unit 14 is corrected by the correction encoder (X) 15X and the correction encoder (Y) 15Y.
Check from the output (change) of. This is performed to obtain the current position information of the blur correction optical unit 14 for the blur correction operation. Next, in step S254, the result of the integration in step S252, the current position information of the blur correction optical unit 14 in step S253, and the processing in step S2
Based on the photographing focal length information at 18, the blur correction optical unit 14
Is calculated at step S255.
Then, check the current photographing focal length value. This is the same reason as described in step S144 in FIG. 9 and step S246 in FIG.

Next, in step S256, it is determined whether or not the current photographing focal length is within a predetermined range. If it is within the predetermined range, step S259 and subsequent steps are executed. If it is outside the predetermined range, it is determined at step S257 whether or not the shake correction target position signal calculated at step S254 is within the predetermined range. If within the predetermined range, step S25
9 is executed, and if it is out of the predetermined range, step S2
At 58, in response to the blur correction target signal being out of the predetermined range, control (change) of the blur correction target position signal calculated at step S254 is performed. This is changed to a range where the above-described blur correction operation is stable and there is no image deterioration.

In step S259, the correction driving actuator (X) is set based on the set shake correction target position signal.
13X and the correction drive actuator (Y) 13Y to output a signal for driving the blur correction optical unit 14.
Thereafter, the process returns to step S219.

Next, a control operation of the lens control microcomputer 41 will be described with reference to FIG. In step S301, initial setting of the lens control microcomputer 41 is performed. In step S302, the position of the variable power lens 48,
That is, the current photographing focal length state is changed to the variable magnification lens position detecting unit 5.
In step S303, the photographing focal length information confirmed in step S302 is stored. Next, in step S304, it is determined whether or not there is a communication requesting transmission of shooting focal length information from the camera control microcomputer 21 of the camera body 1. This transmission request for the photographing focal length information corresponds to the communication from the camera control microcomputer 21 in step S124 in FIG. This step S304
If it is determined that there is no request to send the shooting focal length information,
Step S306 and subsequent steps are executed. If it is determined that there is a transmission request, the microcomputer 41 in
Transmits the focal length information to the microcomputer 21 for camera control. This corresponds to step S125 in FIG. When the transmission of the photographing focal length information in step S305 is completed, communication for receiving the next operation instruction from the camera control microcomputer 21 is performed in step S306.

Next, in step S307, it is determined whether or not the content of the communication instruction from the camera control microcomputer 21 in step S306 is related to a driving start instruction of the focusing lens 42 for focusing. If the instruction is a driving instruction (start instruction) for the focusing lens 42, the process from step S308 is executed. If the instruction is not an instruction for driving the focusing lens 42, the process from step 313 is executed. This corresponds to step S in FIG.
137.

In step S308, measurement is performed by a subject distance measuring unit (not shown),
Communication with the camera control microcomputer 21 is performed in order to obtain information on the driving direction and the driving amount of the focusing lens 42 calculated in step 1, and in step S309, the current position information of the focusing lens 42 is detected as the focusing lens position. Confirmed by the unit 43, step S310
Then, the focusing lens 42 is driven by controlling the drive of the lens driving actuator 44 based on the information in steps S308 and S309.

Next, in step S311, it is determined whether or not an instruction to stop driving the focusing lens 42 has been issued from the camera control microcomputer 21. This is due to the fact that it is determined that the subject is in focus, or the focusing lens 42
When the operation of the photographing preparation instructing section (1R) 34 is released during the driving of, a drive stop instruction is generated. If there is an instruction to stop driving, the focusing lens 4 is determined in step S312.
2 is stopped. This corresponds to step S140 in FIG.
And step S186 in FIG.

If there is no drive stop instruction in step S311, the process returns to step S308. When the driving of the focusing lens 42 is stopped in response to the determination in the step S311 in the step S312, the process returns to the step S302.

At the step S307, at the step S307
If it is determined in the communication from the camera control microcomputer 21 of 306 that it is not a driving instruction of the focusing lens 42,
In step S313, it is determined whether or not the communication content in step S306 is aperture information. This is shown in FIG.
Corresponds to step S142. This step S313
If it is determined that the aperture information is not the aperture information, step S316 and subsequent steps are executed. If it is determined that the aperture information is determined, the brightness value measured by the subject brightness measurement unit (not shown) and the film sensitivity detection unit detect the aperture value in step S314. The aperture value of the aperture blade 45 calculated from the calculated film sensitivity value is transmitted and received from the microcomputer 21 for camera control. Next, step S
At 315, the aperture value information at the time of photographing the subject transmitted and transmitted from the camera control microcomputer 21 is obtained and stored, and the process returns to step S302.

In step S316, step S3
It is determined whether or not the communication content at 06 is related to the aperture drive instruction. This corresponds to step S157 in FIG.
If the instruction is not an aperture drive instruction, steps S322 and subsequent steps are executed. If the instruction is an aperture drive instruction, the aperture value information stored in step S315 is read out in step S317, and in step S318,
The drive of the diaphragm driving actuator 47 is controlled based on the aperture value information read in step S317 to drive the diaphragm blade 45 to a predetermined aperture value. This step S318
The aperture state information of the aperture blade 45 by the drive control of the aperture drive actuator 47 is read from the aperture position detector 46 in step S319, and the camera control microcomputer 21 transmits the aperture value information in step S317 in step S320. In step S319, it is determined whether the aperture position detected by the aperture position detection unit 46 matches. If not, the process returns to step 318 and the adjustment of the aperture blade 45 is performed again. S3
At 21, the diaphragm driving of the diaphragm blade 45 by the diaphragm driving actuator 47 is stopped, and the process returns to step S302.

Next, in step S322, it is determined whether or not the communication content in step S306 is an aperture opening drive instruction. If the instruction is not the aperture opening drive instruction, the process returns to step S203, and if the instruction is the aperture opening driving instruction, step 323 and subsequent steps are executed. This is shown in FIG.
Corresponds to step S167.

In step S323, the diaphragm driving actuator 47 is driven so that the diaphragm blade 45 is opened. In step S324, the current diaphragm position of the diaphragm blade 45 is detected and output by the diaphragm position detector 46. In step S325, it is determined whether or not the aperture blade 45 is in the aperture-open state. If the aperture is not in the aperture-open state, the process returns to step S323, and the aperture-opening drive is performed again. In step S326, the diaphragm driving of the diaphragm blade 45 by the diaphragm driving actuator 47 is stopped, and the process returns to step S302.

Next, referring to FIG. 20, the blur correction optical unit 1 will be described.
The movable range of No. 4 will be described. FIG. 20 shows a case where the photographing lens 2 is mounted on the camera body 1 and the blur correction optical unit 1 is mounted.
4 shows the relationship between the aperture 4 and the opening 70 on the lens mount 8 side of the taking lens 2. It is necessary that the diameter l2 of the parallel glass plate which is the blur correction optical unit 14 is larger than the diameter l1 of the lens opening 70 (l1 <l2). FIG. 20A shows that the blur correction optical unit 14 is not performing the correction operation, that is,
The lock position state is shown. FIG. 20B shows a state in which the camera shake correction optical unit 14 is maximally shake-corrected when the photographing lens 2 is mounted on the camera body 1, and the parallel glass plate as the shake correction optical unit 14 has the lens open. It is tilted just before contact with the part 70. At this time, the maximum drivable angle θ1 is obtained in step S126 in FIG. 8 by communication from the lens control microcomputer 41, and FIG.
In step S239, it is used to determine whether the parallel glass plate serving as the shake correction optical unit 14 is within a predetermined range. FIG. 20C shows a state in which the photographing lens 2 is not mounted on the camera body 1 and the blur correction optical unit 14 is not mounted.
Is a state in which the parallel glass plate is tilted to the maximum. At this time, the maximum drivable angle θ2 is such that it does not collide with the quick return mirror 22 and that the lens mount 8
Needless to say, the range does not protrude.
The value relating to θ2 is obtained by the camera control microcomputer 2 shown in FIG.
1 is stored in a non-volatile memory (not shown),
It may be used for the determination in step S239 in FIG.

The maximum drivable angle at which the aberration occurs due to the tilting of the parallel glass plate, which is the blur correction optical unit 14, and the optical performance is reduced is also determined in step S2.
It may be used for the determination in 39.

Further, when the cap is mounted on the lens mount 8, it is of course necessary to prevent the parallel glass plate, which is the blur correction optical unit 14, from colliding.

That is, the anti-vibration camera of the present invention controls the projection of a photographed image on the surface of the final lens group of the photographing lens 2 mounted on the camera body 1 or the lens mound 8 on which the photographing lens 2 is mounted, and the film surface. The blur correction optical unit 14 is disposed between the camera unit 1 and the quick return mirror 22, and the focal length information of the photographing lens 2 is compared with a predetermined value to control the correction driving range of the blur correction optical unit 14. With this, it is possible to prevent the blur correction optical unit 14 from being damaged by a contact collision with the photographing lens 1 and the quick return mirror 22.

Further, by displaying the blur correction state of the blur correction optical section 14 on the camera state notifying section 37, it is possible to notify the photographer of the blur correction state.

Further, by setting the predetermined value to be compared with the focal length information on the wide-angle side or the telephoto side, the image deterioration due to the blur correction optical unit 14 can be eliminated.

In the above description of the embodiment of the present invention, a mechanism for tilting a parallel glass plate to correct camera shake is used as the shake correction optical unit 14, but a lens group having power is perpendicular to the optical axis. A mechanism for correcting camera shake by driving in any direction may be used.

[Appendix] According to the embodiment of the present invention described in detail above, the following configuration can be obtained.

(1) Detecting means for detecting camera shake information of a camera, and a final group of photographic lenses or a lens mount surface for correcting a movement of a photographed image on a film surface based on the camera shake information detected by the detecting means. A blur correction optical unit provided between the camera and a mirror for controlling the projection of a photographed image on the film surface; a focal length judging unit for comparing and judging the focal length information of the photographing lens with a predetermined value; And a correction drive means for restricting the correction operation of the shake correction optical means in accordance with the result of the comparison determination.

(2) Camera state notification means for notifying the operation state of the camera, detection means for detecting camera shake information, and a photographed image on the film surface based on the camera shake information detected by the detection means A blur correction optical unit provided between the last group or lens mount surface of the photographing lens for correcting the movement and a mirror for controlling the projection of the photographed image on the film surface, and comparing the focal length information of the photographing lens with a predetermined value. A focal length determining means for determining, and a correction driving means for performing a state notification operation to the camera state notification means in accordance with a result of the comparison determination by the focal length determination means, and restricting a correction operation of the blur correction optical means. And an anti-shake camera comprising:

(3) In the focal length determining means,
3. The camera according to claim 1, wherein the predetermined value to be compared with the focal length information of the photographing lens is a focal length on a wide-angle side or a telephoto side than usual.

(4) The anti-shake camera according to appendixes 1 or 2, wherein the unit correcting optical means comprises a parallel flat plate, and performs image movement by tilting with respect to the optical axis.

[0140]

In the image stabilizing camera according to the present invention, the image blur correcting optical unit is controlled to project a photographed image on the final lens group of the photographing lens mounted on the camera body or the lens mound surface on which the photographing lens is mounted and on the film surface. The focal length information of the photographing lens with a predetermined value, controls the correction driving range of the blur correction optical unit, and controls the blur correction state of the blur correction optical unit. Displaying the notification in the camera state notification unit has an effect of preventing damage due to contact collision with the photographic lens and the quick return mirror of the blur correction optical unit.

The predetermined value to be compared with the focal length information is set to the wide-angle side or the telephoto side, so that the image is not deteriorated by the blur correction optical unit.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a conceptual configuration of an image stabilization camera according to the present invention.

FIG. 2 is a block diagram illustrating an overall configuration of an image stabilization camera according to the present invention.

FIG. 3 is a side cross-sectional view illustrating an internal configuration of a body and a photographing lens of the anti-shake camera according to the present invention.

FIG. 4 is an external rear perspective view of the image stabilizing camera according to the present invention.

FIG. 5 is an external front perspective view of a camera body of the anti-vibration camera according to the present invention.

6A and 6B show a blur correction optical unit of the image stabilizing camera according to the present invention, wherein FIG. 6A is a front perspective view and FIG. 6B is an explanatory view.

FIG. 7 is a flowchart illustrating a control operation of the camera control microcomputer of the anti-shake camera according to the present invention.

FIG. 8 is a flowchart for explaining a control operation by the camera control microcomputer of the anti-shake camera according to the present invention.

FIG. 9 is a flowchart illustrating a control operation of the camera control microcomputer of the anti-shake camera according to the present invention.

FIG. 10 is a flowchart illustrating a control operation of the camera control microcomputer of the anti-shake camera according to the present invention.

FIG. 11 is a flowchart illustrating a control operation of the camera control microcomputer of the anti-shake camera according to the present invention.

FIG. 12 is a flowchart illustrating a control operation of the camera control microcomputer of the anti-shake camera according to the present invention.

FIG. 13 is a flowchart illustrating a control operation of the camera control microcomputer of the anti-shake camera according to the present invention.

FIG. 14 is a flowchart illustrating a control operation of the camera shake control microcomputer of the anti-shake camera according to the present invention.

FIG. 15 is a flowchart illustrating a control operation of the shake control microcomputer of the anti-shake camera according to the present invention.

FIG. 16 is a flowchart for explaining a control operation of the vibration control camera according to the present invention by the shake control microcomputer.

FIG. 17 is a flowchart for explaining a control operation of the image stabilization camera according to the present invention performed by the microcomputer for shake control.

FIG. 18 is a flowchart for explaining a control operation of the camera shake control microcomputer of the anti-shake camera according to the present invention.

FIG. 19 is a flowchart illustrating a control operation by the lens control microcomputer of the anti-shake camera according to the present invention.

FIG. 20 is an explanatory diagram illustrating the movable range of the shake correction optical unit of the image stabilization camera according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Camera main body 2 ... Photographing lens 8 ... Lens mount 11 ... Blur control microcomputer 12 ... Blur detection part (blur detection sensor) 13 ... Correction drive actuator 14 ... Blur control microcomputer 21 ... Camera control microcomputer 22 ... Quick return mirror 37 Camera status notification unit 41 Lens control microcomputer 42 Focusing lens 43 Focusing lens position detection unit 44 Lens drive actuator 48 Variable magnification lens 50 Variable magnification lens position detection unit

Claims (3)

[Claims] 1. A detecting means for detecting camera shake information of a camera, and a final group of photographing lenses or a lens mount surface for correcting a movement of a photographed image on a film surface based on the camera shake information detected by the detecting means. A blur correction optical unit provided between the film surface and a mirror that controls the projection of a photographed image, a focal length determining unit that compares and determines focal length information of the photographing lens with a predetermined value, and a focal length determining unit. And a correction drive means for restricting a correction operation of the shake correction optical means in accordance with a result of the comparison determination. 2. A camera state notifying means for notifying an operation state of a camera, a detecting means for detecting camera shake information, and a movement of a photographed image on a film surface based on the camera shake information detected by the detecting means. A blur correction optical unit provided between a final group or lens mount surface of the taking lens for correcting the image and a mirror for controlling the projection of a photographed image on the film surface; and comparing the focal length information of the taking lens with a predetermined value. A focal length determining unit that performs a state notification operation on the camera state notification unit according to a result of the comparison determination by the focal length determining unit, and a correction driving unit that limits a correction operation of the shake correction optical unit. An anti-vibration camera, comprising: 3. The apparatus according to claim 1, wherein the predetermined value which is compared with the focal length information of the photographing lens in the focal length determining means is a focal length on a wide angle side or a telephoto side than usual. 2. The anti-vibration camera according to 2.