JP2001343674A - Hand shake correcting camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hand shake correcting camera capable of confirming a correcting effect within a finder without making a photographing lens larger nor causing cost rising. SOLUTION: This camera where a photographing lens can be attached to/ detached from a camera body is equipped with an optical correction means capable of correcting camera shake by a photographer, and the optical correction means is installed near the attaching/detaching part of the photographing lens in the camera body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera, and more particularly, to a camera shake correction camera having a function of correcting camera shake caused by a photographer.

[0002]

2. Description of the Related Art Conventionally, a camera having a camera shake correcting mechanism for driving a part of a photographing lens so as to cancel a camera shake by a photographer, for example, a technique disclosed in Japanese Patent No. 2605326 is disclosed. By driving the last group of photographing lenses perpendicular to the optical axis, camera shake caused by the photographer is corrected.

[0003] In addition to the technique of the camera for driving a part of the photographing lens to correct the blur, a camera for correcting the blur by driving the film perpendicular to the optical axis has been known. Have been.

In the prior art disclosed in Japanese Patent Application Laid-Open No. 8-129198, camera shake is corrected by driving a film perpendicular to the optical axis for each cartridge.

[0005]

However, the above prior art has the following problems.

First, in a camera having a camera shake correcting mechanism for driving a part of the photographing lens so as to cancel the camera shake caused by the photographer, an interchangeable lens is provided because the camera shake correcting mechanism is provided in the photographing lens. A correction mechanism is required for each shooting lens, and a blur detection sensor
In addition, it is necessary to provide a shake correction mechanism.

[0007] Therefore, such a conventional technique results in an increase in size and cost of the taking lens.

The technique disclosed in Japanese Patent Application Laid-Open No. 8-129198 does not have the problem of enlarging the photographing lens and increasing the cost as described above. Even in the case of a reflex camera, there is a problem that the effect of the correction cannot be confirmed in the viewfinder.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and does not increase the size of the photographing lens or increase the cost, and can confirm the effect of the correction in the viewfinder. An object of the present invention is to provide a shake correction camera.

[0010]

According to the present invention, in order to solve the above-mentioned problems, (1) an optical correction means capable of correcting a camera shake of a photographer in a camera whose photographing lens is detachable from a camera body. Wherein the optical correction means comprises:
A camera-shake correction camera is provided near the attachment / detachment portion of the photographing lens in the camera body.

According to the present invention, in order to solve the above-mentioned problems, (2) the vicinity of the attaching / detaching portion of the photographing lens includes:
The camera shake correction camera according to (1), wherein the camera shake correction camera is provided between a main mirror in the camera body and a detachable portion of the photographing lens.

According to the present invention, in order to solve the above-mentioned problems, the present invention further comprises: (3) a driving unit for driving the optical correction unit, wherein the driving unit is configured to control the optical correction in the camera body. The camera shake correction camera according to (1) or (2), wherein the camera shake correction camera is provided at an upper position of the means or at a side opposite to a grip portion of the camera body.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing a conceptual configuration of a camera shake correction camera according to an embodiment of the present invention.

That is, as shown in FIG. 1, a camera lens 1 as an interchangeable lens which is detachable from the camera body 1 and a camera shake which is a sensor for detecting camera shake by a photographer are provided in the camera body 1. The detection unit 3 is, for example, a microcomputer that controls a camera shake correction operation. The microcomputer calculates a camera shake signal from the camera shake detection unit 3 and cancels the camera shake by the photographer. Data that communicates with the camera shake control unit 4 that controls the camera shake correction unit 6 and the photographing lens 2 and that provides the camera shake control unit 4 with information (for example, a focal length or the like) necessary for camera shake correction control. A communication unit 5;
A camera shake correction unit 6 comprising a camera shake correction optical system and a driving mechanism for driving the camera shake correction optical system under the control of the camera shake control unit 4 to cancel camera shake by the photographer; The camera body 1 is provided with a mount 7 for mounting the photographing lens 2 thereon.

The data communication section 5 and the camera shake correction section 6
Is disposed near the mount 7.

FIG. 2 is a block diagram showing a detailed configuration of the camera shake correction camera according to one embodiment of the present invention.

That is, as shown in FIG. 2, the camera is roughly divided into a part A for performing general camera operations, a part B for performing blur detection / correction operations, and a part C for an interchangeable lens.
And

Each of these parts A, B, and C has
A camera control CPU 21 which is, for example, a control microcomputer (hereinafter referred to as a CPU), respectively.
CPU 11 for blur control and CPU 41 for lens control
Are provided.

The CPUs 21, 11, and 41 control the operations of the parts A, B, and C, respectively.

The camera control CPU 21 is connected to the camera shake control CPU 11 and the lens control CPU 41, and controls the operation of the entire camera.

First, a description will be given of a part A for performing general camera operations.

Reference numeral 21 denotes a camera control CPU for controlling the operation of the entire camera, as described above.

Reference numeral 22 denotes a quick return mirror that operates to guide light to a film 27 described later at the time of photographing.

Reference numeral 23 denotes a mirror driving unit for driving the quick return mirror 22.

Reference numeral 24 denotes a mirror state detector for detecting the operation state of the quick return mirror 22.

Reference numeral 25 denotes a shutter device for performing exposure.

Reference numeral 26 denotes a shutter drive unit for causing the shutter device 25 to perform a shutter operation.

Reference numeral 27 denotes a film for recording a photographed image.

Reference numeral 28 denotes a film drive unit used when winding and rewinding the film 27.

Reference numeral 29 denotes the film drive unit 28
Is a film state detection unit for detecting the state of the film 27 due to the above.

Reference numeral 30 denotes a lens exchange switch (hereinafter, referred to as a lens exchange switch) used when detaching the interchangeable lens from the camera body.
The switch is referred to as SW), and is composed of known buttons and the like.

Reference numeral 31 denotes a lens attachment detector for detecting whether or not an interchangeable lens is attached to the camera body, and a known switch or the like is used.

Reference numeral 32 denotes a body-side communication unit for communicating with an electric circuit in the interchangeable lens, and is constituted by electric contacts and the like.

Reference numeral 33 denotes a photographing mode setting unit for setting a photographing mode of the camera. In the present invention, the photographing mode setting unit 33 is used particularly for setting a mode as to whether or not to perform anti-shake photographing.

Reference numeral 34 denotes a photographing preparation instruction unit (first release switch, hereinafter referred to as 1RSW) for issuing a photographing preparation instruction, and is a part for instructing a well-known first release operation.

Reference numeral 35 denotes a photographing start instructing section (second release switch, hereinafter referred to as 2) for issuing a photographing start instruction.
RSW), which is a part for instructing a known second release operation.

Reference numeral 36 denotes a power switch of the camera.

Reference numeral 37 denotes a camera status notifying section for notifying and displaying shooting conditions (shutter time, aperture, etc.) and the shooting mode set by the shooting mode setting section 33, and is usually a camera body. It is provided in the upper part and in the viewfinder.

With the above, the relationship with the interchangeable lens is grasped and the interface with the camera user is performed.

Next, the blur detection / correction portion B will be described.

Reference numeral 11 denotes a shake control CPU, as described above, for detecting a camera shake state applied to the camera.
In addition, control of a blur correction operation for preventing occurrence of image blur caused by camera shake is performed.

The shake control CPU 11 is connected to the camera control CPU 21 as described above.
The above operation is performed in response to an instruction from the camera control CPU 21.

In the camera shake control CPU 11, the camera control CPU 21 obtains focal length information from communication with the lens control CPU 41, fetches the information, and uses the information for the above-described shake correction operation.

Reference numeral 12 denotes a blur detection sensor.

The shake detection sensor 12 has a shake detection sensor (X) 12X for detecting hand shake corresponding to the horizontal axis (X-axis) of the film surface, and has a vertical axis (Y-axis) corresponding to the film surface. Shake detection sensor (Y) 1 for detecting camera shake
2Y.

As the shake detection sensor 12, for example, a known angular velocity sensor (vibrating gyroscope) or the like is used.

The shake control CPU 11 includes a shake detection sensor (X) 12X and a shake detection sensor (Y) 12Y.
And the filter processing for removing noise components not directly related to the camera shake, and for the correction operation based on the camera shake information and the output information from the correction encoder unit described later. Create a target signal.

Reference numeral 13 denotes a correction drive actuator which is used to drive a member for performing blur correction (specifically, a blur correction optical unit 14 described later) to perform a blur correction operation.

Like the shake detection sensor 12, the correction drive actuator 13 also includes a correction drive actuator (X) 13X used to perform a shake correction operation corresponding to the horizontal axis and the vertical axis of the film, and a correction drive actuator (X) 13X. And a drive actuator (Y) 13Y.

As the correction drive actuator 13, a general actuator such as a DC motor or a voice coil is used.

Reference numeral 14 denotes a blur correction optical unit that performs blur correction by generating an image movement on a film surface in response to camera shake by driving the correction drive actuator 13.

As a result, image blur caused by camera shake can be corrected.

More specifically, there are several methods, such as a method in which an image is moved by tilting a lens and a method in which an image is moved by shifting a lens.

Reference numeral 15 denotes the shake correcting optical unit 14.
Is a correction encoder for detecting the operation state of the.

Similarly to the correction drive actuator 13, this correction encoder 15 also has a correction encoder (X) 15X for detecting the operating state of the blur correction optical unit 14 corresponding to the horizontal axis and the vertical axis on the film surface. And a correction encoder (Y) 15Y.

This correction encoder 15 is, specifically,
It is composed of known PI / PR and IRED / PSD.

The operation information of the blur correction optical unit 14 detected by the correction encoder 15 is sent to the blur control CPU 11, and is used by the blur control CPU 11 to generate a correction drive target signal.

The operation procedure and a specific configuration example of the shake detection / correction section will be described later with reference to FIGS.
14 to FIG.

Next, the interchangeable lens portion C will be described.

Reference numeral 41 denotes a lens control CPU provided in the interchangeable lens as described above.

As described above, the lens control CPU 41 communicates with the camera control CPU 21 on the camera body side to receive and exchange focusing lens driving instructions and aperture driving instructions for focusing. The current focal length information of the lens is transmitted.

Reference numeral 42 denotes a focusing lens for focusing by being driven in the optical axis direction.

Reference numeral 43 denotes the focusing lens 4
2 is a focusing lens position detection unit for detecting the current position state, and is configured by, for example, a known PI / PR or the like.

Reference numeral 44 is used for focusing.
A lens driving actuator for driving the focusing lens 42, for example, a DC motor or the like is used.

Reference numeral 45 denotes an aperture blade.

Reference numeral 46 denotes an aperture position detection unit for detecting the current position of the aperture blade 45, and is composed of, for example, a known PI / PR or the like.

Reference numeral 47 denotes an aperture driving actuator for driving the aperture blade 45 in accordance with an instruction from the camera side. For example, a DC motor or a stepping motor is used.

Reference numeral 48 denotes a variable power lens which changes the focal length by being moved in the optical axis direction.

Reference numeral 49 denotes a zoom operation unit for changing the focal length by changing the position of the variable power lens 48, which may be a manual operation or an electric operation. .

However, in the case of electric power, it is necessary to add a switch and an actuator not shown in FIG.

Reference numeral 50 denotes a variable power lens position detecting unit for detecting the position of the variable power lens 48.
For example, it is configured by a known PI / PR or the like.

Reference numeral 51 denotes the lens control CPU.
A lens data communication unit used for communication between the camera control CPU 41 and the camera control CPU 21 in the camera body.

FIG. 3 is a side view of the camera of the present invention, and is a view schematically showing the positional relationship inside the main parts.

FIG. 4 is an oblique view of the camera of the present invention.

FIG. 5 is a front view of the camera body according to the present invention.

In each of these drawings, detailed description of the same parts as those described in FIG. 2 will be omitted.

In FIG. 3, reference numeral 01 denotes a camera body.

Reference numeral 02 denotes a photographing lens as an interchangeable lens that is detachable from the camera body main body 01.

Reference numeral 03 denotes a finder optical system.

Reference numeral 07 denotes a screen used for observing a finder image.

Reference numeral 08 denotes the camera body main body 0.
A mount for connecting the camera lens 1 to the photographing lens 02.

In the present invention, the shake detection sensor 1
2, and the blur correction optical unit 14 are arranged in the camera body main body 01.

In the present invention, the blur correction optical section 14 is provided with the mount 08 and the quick return mirror 2.
2 are arranged.

As a result, in a camera system having a plurality of photographing lenses, it is not necessary to equip each photographing lens with a shake detection sensor and a shake correcting mechanism. There is no cost increase.

In the present invention, through the finder optical system 03 and a finder window 04 described later,
The photographer can confirm the effect of the camera shake correction.

In FIG. 4, reference numeral 04 denotes a finder window for observing a finder image.

Reference numeral 05 denotes a strobe storage unit for storing a strobe used for low-luminance photographing.

Reference numeral 06 denotes a grip portion which is a portion to be gripped when holding the camera.

Reference numeral 09 denotes a release button for the photographer to give a photographing preparation instruction and a start instruction.

The release button 09 has a two-stage configuration. When the release button 09 is half-pressed, the above-described 1RSW is pressed.
RSW is turned on.

Reference numeral 12 denotes a shake detection sensor for detecting a camera shake applied to the camera. The shake detection sensor 12 is built in the camera body 01 as described above.

[0093] In FIG.
Although 2 is arranged on the back of the grip portion 06, it can be located anywhere else in the camera body 01.

Here, the axis in the optical axis direction is set as the Z axis, and two axes perpendicular to the Z axis are set as the X axis and the Y axis, respectively.

The shake detection sensor 12X is a shake detection sensor for detecting hand shake around the X axis, and the shake detection sensor 12Y is a shake detection sensor for detecting hand shake around the Y axis.

FIG. 5 is a view of the camera of the present invention as viewed from the front, with the taking lens 02 removed from the camera body main body 01.

Reference numeral 08 denotes the camera body main body 0.
This is a mount that connects the camera 1 and the photographing lens 02.

Reference numeral 30 denotes the camera body main body 0.
This is a lens exchange switch used when detaching the interchangeable lens from the lens 1, and is composed of buttons and the like.

Reference numeral 32 denotes a body-side communication unit for communicating with an electric circuit in the interchangeable lens, and is constituted by electric contacts and the like.

Reference numeral 14 denotes a blur correction optical unit.
It is located inside the mount 08.

FIG. 6 is a diagram showing a camera shake correction mechanism applied to the embodiment of the present invention.

In the present embodiment, the drive mechanism shown in FIG. 6A uses a gimbal mechanism to tilt a parallel glass plate as the shake correction optical section 14 according to the shake state of the camera, and The displacement of the image by the parallel glass plate as the correction optical unit 14 cancels the displacement of the image due to blur.

Here, only the mechanism for correcting the shake in the X-axis direction (shake around the Y-axis) will be described.

That is, the shake correcting optical section 14 is a parallel glass plate, held by the inner frame 68, and the rotating shaft 67X is fixed to the inner frame 68 and the gear 62X.

The inner frame 68 is held rotatably with respect to the outer frame 69.

The worm gear 61X is connected to the motor 1
The rotation of 3X is transmitted to the gear 62X.

A disc 63X having a slit is integrated with the rotating shaft of the motor 13X.
When 3X rotates, a pulse signal is generated each time the slit of the disk 63X crosses the photointerrupter 64X.

Based on this signal, the rotation speed of the motor 13X and the rotation amount of the parallel glass plate 14 are detected.

The pin 66X fixed to the gear 62X
The groove 65X serves to regulate the rotation range of the inner frame 68.

Note that the blur in the Y-axis direction (the blur around the X-axis)
Is exactly the same as the above-described mechanism for correcting shake in the X-axis direction (shake around the Y-axis), and is denoted by reference numerals 61Y to 67Y, and their description is omitted.

Further, the camera shake correction mechanism is arranged at the upper portion and the right portion (as viewed from the front of the lens) of the correction optical system for the following space reasons.

A grip section 06 is provided on the left side of the camera (as viewed from the front of the lens). The photographer holds the camera with his right hand, and also has windows (not shown) such as an auxiliary light section for auto-focusing. Often placed.

Therefore, the left part is limited in space.
The correction mechanism is difficult to install on the left.

Similarly, there is more space in the upper part than in the lower part of the camera, and it is possible to save space by devising a projection on the upper part of the mount 08, but such devising is also possible in the lower part. Hateful.

FIG. 6B is a diagram shown to explain the theory of blurring correction by the parallel glass plate 14.

In FIG. 6B, the solid line indicates the case without correction, and the parallel plate glass 14 is positioned perpendicular to the optical axis.

At this time, the light passing through the center is
An image is formed at the position A above.

In FIG. 6, the dotted line indicates the case where the parallel glass plate 14 is tilted by the angle θ, and the light passing through the center forms an image on the film 27 at the position B at a distance α from A.

The blur correction control CPU 11 controls the tilting of the parallel glass plate 14 so as to offset the shift of the image forming position on the film 27 due to camera shake.

FIGS. 7 to 11 are flowcharts for explaining the processing procedure of the camera control CPU 21 as the main CPU of the camera according to the present invention.

FIGS. 7 to 11 mainly describe parts related to the present invention, and a part of the parts not directly related to the present invention is partially omitted.

When the processing procedure starts, step S1
In 01, the camera control CPU 21 sets its own initial settings.

In step S102, the camera control CP
U21 performs initial setting of flags related to the present invention.

F PW is a flag indicating the state of the power supply switch.
Is ON and this F The initial value of the PW flag is "1"
(Power switch OFF).

F LENS is a flag indicating a lens mounted state. “1” indicates no lens mounted, “0” indicates lens mounted, and F The initial value of the LENS flag is "
1 "(no lens attached).

F MODE is a flag indicating whether or not the blur correction mode is selected as the shooting mode. "1" indicates no blur correction mode selection, and "0" indicates that the blur correction mode is selected. The initial value of the MODE flag is set to "1" (no blur correction mode).

At step S103, the camera control CP
U21 determines whether or not the camera power switch 36 has been operated, and if there is an operation, the process proceeds to step S105.
If there is no operation, F is determined in step S104. It is determined whether or not the PW flag is “0”.

Here, F If the PW flag is “0”, the camera control CPU 21 proceeds to step S107 described below. If the PW flag is “1”, the camera control CPU 21 proceeds to step S1.
Return to 03.

At step S105, the camera control CP
U21 determines whether or not the camera power switch 36 has been turned from the OFF state to the ON state.
If the state has been set, the process proceeds to step S106. If not, that is, if the camera power switch 36 is in the OFF state, the process proceeds to step S180.

At step S106, the camera control CP
U21 receives the ON operation of the camera power switch SW36, and
Set the PW flag to “0”.

At step S107, the camera control CP
U21 checks the mounted state of the interchangeable lens.

This is performed by communication via the lens attachment detection section 31 and the lens control CPU 41.

In step S107-1, the camera control CPU 21 determines whether or not there is a mounted lens. If there is a lens, the process proceeds to step S108. If it is determined that the state is not the same, the process proceeds to step S113.

In step S108, the camera control CP
U21 receives F with lens attached The LENS flag is set to "0".

At step S110, the camera control CP
U21 determines whether the shake correction mode SW has been changed by the shooting mode setting unit 33 or not.
This is performed by communication with the device 1.

In step S110, the camera control CP
U21 determines whether or not the blur correction mode setting operation has been performed by the shooting mode setting unit 33. If the blur correction mode setting operation has been performed (OFF → ON), step S21.
If not (ON → OFF), the process proceeds to step S118.

It is to be noted that the instruction to start the blur correction operation is issued after the photographer has performed a photographing preparation instruction operation.

In step S112, the camera control CP
U21 receives the correction mode ON setting, and MODE
Set the flag to "0".

In step S113, the camera control CP
U21 receives the determination result in step S107-1 (no lens attached / not attached in a predetermined state), and L
Set the ENS flag to "1".

In step S114, the camera control CP
U21 determines whether or not the blur correction mode is selected as the shooting mode. If the blur correction mode is selected, the process proceeds to step S115. If the blur correction mode is not selected, the process proceeds to step S122. move on.

In step S115, the camera control CP
U21 is a shake control CPU for protecting the shake correction optical unit 14 when the lens is not mounted in a predetermined state.
11 to stop the blur detection / correction operation and instruct the blur correction optical unit 14 to lock (lock).

This is to prevent the blur correction optical unit 14 from being damaged if the user accidentally touches the blur correction optical unit 14 with the lens removed.

In step S116, the camera control CP
U21 waits for a response from the shake control CPU 11.

In step S117, the camera control CP
U21 determines whether or not there has been a response message of lock completion from the shake control CPU 11, and if there is a response message of lock completion, the process proceeds to step S122, and if there is no response message of lock completion, Returns to step S116.

In step S118, the camera control CP
U21 receives the determination result in step S110 (the shake correction mode is set from ON to OFF), and performs communication for instructing stop of the shake detection operation and locking of the shake correction optical unit 14 by the shake control CPU 11. Do between.

This is to prevent unnecessary power consumption due to subsequent blur detection because the blur correction operation is no longer necessary.

In step S119, the camera control CP
U21 waits for a response from the shake control CPU 11.

In step S120, the camera control CP
U21 determines whether or not there is a response message of lock completion from the shake control CPU 11, and if there is a response message of lock completion, the process proceeds to step S121, and if there is no response message of lock completion, It returns to step S119.

In step S121, the camera control CP
U21 receives the setting of the blur correction mode OFF, and
The MODE flag is set to "1".

In step S122, the camera control CP
U21 is F It is determined whether or not the LENS flag is “0”. If the LENS flag is “1” (there is a lens), step S1
Proceeding to step S23, if "0" (no lens), proceed to step S127.

Here, the branching is performed according to the presence or absence of the lens when the lens is not mounted in step S126.
This is because the processing and determination up to this point are unnecessary.

In step S123, the camera control CP
U21 performs communication for requesting the lens control CPU 41 to transmit information on the lens side, in response to the fact that the lens is mounted.

The information on the lens side at this time is the current focal length information or the maximum drivable angle when this lens is mounted.

FIG. 16 shows the maximum drivable angle.
As will be described later, this is information on the maximum drive angle of the parallel glass plate 14.

In this case, the focal length information is transmitted each time there is a change, but the maximum drive angle information may be transmitted only once.

In step S124, the camera control CP
U21 waits for a response from the lens control CPU 41.

In the step S125, the camera control CP
U21 determines whether or not lens information has been transmitted from the lens control CPU 41 side. If lens information has been transmitted, the process proceeds to step S126; otherwise, the process proceeds to step S124. Return.

In the step S126, the camera control CP
U21 stores the lens information sent from the lens control CPU 41 in a memory in the camera control CPU 21.

Here, the focal length information included in the lens information is used for determining the exposure condition based on the result of the photometry or for calculating the image blurring state based on the camera shake state in the camera shake controlling CPU 11. .

In step S126-1, the camera control CPU 21 It is determined whether or not the MODE flag is “0”, and if it is “0” (there is a correction mode)
Proceeds to step S126-2, and if "1" (no correction mode), proceeds to step S127.

In step S126-2, the camera control CPU 21 determines whether there is any difference from the lens information stored so far in step S126. If there is a difference, the flow advances to step S126-3. Otherwise, the process proceeds to step S127.

In step S126-3, the camera control CPU 21 performs communication for sending lens information to the shake control CPU 11.

In step S127, the camera control CP
U21 performs a photometric operation by a photometric sensor (not shown) in FIG. 2 to determine exposure conditions (shutter speed, aperture).

In the step S128, the camera control CP
U21 determines whether or not there has been a shooting preparation instruction operation by the shooting preparation instruction unit (1RSW) 34, and if there has been a shooting preparation instruction operation (1RSW: ON), step S12.
9 and there is no shooting preparation instruction operation (1RSW: O
In step FF), the process returns to step S103.

In the step S129, the camera control CP
U21 is F It is determined whether or not the LENS flag is “0”. If the LENS flag is “0” (there is a lens), the process proceeds to step S130. If the LENS flag is “1” (there is no lens), the process proceeds to step S141.

Here, the reason for judging the presence or absence of the lens is that if no lens is attached, the processing and judgment up to step S140 are unnecessary.

In step S130, the camera control CP
U21 is F It is determined whether or not the MODE flag is “0”. If the MODE flag is “0” (there is a blur correction mode), the process proceeds to step S131. If the MODE flag is “1” (there is no blur correction mode), the process proceeds to step S132. Proceed to.

In the step S131, the camera control CP
U21 performs the communication for instructing the shake control CPU 11 to start the shake correction drive in response to the presence of the correction mode and the shooting preparation instruction.

In the step S132, the camera control CP
U21 performs a focus detection operation using a focus detection sensor (not shown in FIG. 2) and a focus detection calculation.

At step S133, step S132
In response to the focus detection result, the CPU 41 instructs the lens control CPU 41 to drive the focusing lens 42 for focusing.

In step S134, the camera control CP
U21 performs the focus detection operation again.

In step S135, the camera control CP
U21 determines whether the focus state by the driving of the focusing lens 42 is the in-focus state.

If focus has been achieved in step S135, the camera control CPU 21 proceeds to step S136, otherwise proceeds to step S142.

In step S136, the camera control CP
U21 performs communication for instructing the lens control CPU 41 to stop driving the focusing lens 42 in response to the in-focus state.

In the step S137, the camera control CP
U21 performs the in-focus notification in response to the in-focus state by the camera state notification unit 37.

In step S137-1, the camera control CPU 21 communicates with the lens control CPU 41 to transmit aperture information at the time of photographing.

At step S138, the camera control CP
U21 is F It is determined whether or not the MODE flag is "0". If the MODE flag is "0" (there is a correction mode), the process proceeds to step S139. If the MODE flag is "1" (there is no correction mode), the process proceeds to step S141. .

Here, the reason why the branch is performed in accordance with the correction mode is that the processing and determination up to step S141 are unnecessary when the mode is not the shake correction mode.

In the step S139, the camera control CP
U21 determines whether or not the current focal length is within a predetermined range.

Here, there are two reasons for determining the focal length.

One of them is that the operating range of the blur correction optical unit 14 for blur correction, that is, the range in which correction is possible is naturally limited, and when the photographing focal length is long, this range is used immediately. This is because there is a possibility that the correction will be performed accurately, but the correction will be performed accurately, but the correction will be applied to the end of the correction range.

Second, if 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, it is not related to blur correction. However, there is a problem in that the image deterioration at the time is increased.

Therefore, in the present invention, in the case described above, the correction operation is restricted.

This is because the CPU 11 for shake control actually
Done in

Therefore, the camera control CPU 21 issues a notice (warning) to that effect in step S140.

This is performed by the camera status notification unit 37.

At step S141, the camera control CP
U21 determines whether or not a shooting start instruction operation has been performed by the shooting preparation instruction unit (2R) 35, and if there has been a shooting start instruction operation (2RON), the process proceeds to step S147.
If not (2ROFF), the process proceeds to step S146.

In the step S142, the camera control CP
U21 increments the counter in response to the fact that the focus state in step S135 is not the in-focus state.

This is for issuing a warning when the in-focus state has reached a predetermined number of times (a predetermined time).

This counter may be initialized somewhere before entering the loop of step S133.

At step S143, the camera control CP
U21 determines whether or not the value of the counter is equal to or greater than a predetermined value, that is, whether or not the out-of-focus state has elapsed for a predetermined time. If the counter value is equal to or greater than the predetermined value, the process proceeds to step S144. It returns to step S133.

In the step S144, the camera control CP
U21 performs out-of-focus notification.

This out-of-focus notification is sent to the camera status notification unit 37.
It is performed by

In step S145, the camera control CP
U21 determines whether or not the shooting preparation instruction operation by the shooting preparation instruction unit (1R) 34 has been canceled, and if the shooting preparation instruction operation has been canceled (1ROFF), step S18.
Go to step 9 if not (1 RON), step S
Return to 133.

At step S146, the camera control CP
U21, in response to the absence of the shooting start instruction operation in step S141, determines whether or not the shooting preparation instruction operation by the shooting preparation instruction unit (IR) 34 has been released, and when the shooting preparation instruction operation has been released. If (1ROFF), the process proceeds to step S189; otherwise (1RON), the process returns to step S141.

At step S147, F It is determined whether or not the MODE flag is “0”. If the MODE flag is “0” (there is a lens), the process proceeds to step S148. If the MODE flag is “1” (there is no lens), the process proceeds to step S153.

Here, the reason for branching according to the lens mounting state is that the processing and determination up to step S152 are unnecessary when there is no lens.

In step S148, F It is determined whether or not the MODE flag is "0". If the MODE flag is "0" (there is a correction mode), the process proceeds to step S149, and "
If it is 1 "(no correction mode), step S15
Proceed to 2.

In the step S149, the camera control CP
U21 is a quick return mirror 2 for starting exposure.
In performing the mirror-up drive of No. 2, an instruction to stop the shake correction optical unit 14 within a predetermined area is given to the shake control CPU 11 by communication.

In the present invention, the blur correction optical section 14 is disposed between the mount 08 and the quick return mirror 22.

However, with such an arrangement,
Distance from mounting surface to film (flange back)
Lengthens, which leads to an increase in the size of the camera.

In order to prevent this, it is necessary to reduce the distance between the mount 08, the blur correction optical unit 14, and the quick return mirror 22.

That is, it suffices to dispose these components close to each other.
When the camera comes in contact with the mount 08 and the quick return mirror 22 when it is operated for blur correction, not only can the stable blur correction operation not be performed, but in the worst case, the parts may be damaged due to the contact and the shooting cannot be performed. There is also.

Therefore, in the present invention, in order to avoid the above-mentioned point, when the quick return mirror 22 is operated, it is retracted to a region where the blur correction optical unit 14 does not contact.

In the present invention, the blur correction optical unit 14 does not always retreat at a fixed position, and the blur correction operation is continued as long as it does not hinder the operation (up / down) of the quick return mirror 22. I do.

[0206] This prevents unnecessary time lag from occurring.

At step S150, the camera control CP
U21 waits for a response from the shake control CPU 11 to the instruction transmission in step S149.

At step S151, the camera control CP
U21 determines whether or not a response has been received indicating that the blur correction optical unit 14 is operating within the predetermined range. If the response has been received, the process proceeds to step S152, and if not, the process proceeds to step S150. Return to

At step S152, the camera control CP
U21 communicates with the lens control CPU 41 an aperture drive instruction for narrowing down to a predetermined aperture value when performing exposure.

This narrowing down instruction is issued in step S1.
It may be performed between 48 and S151.

At step S153, the camera control CP
U21 starts the up drive of the quick return mirror 22.

This is performed by the mirror driving section 23.

In step S154, the camera control CP
U21 determines whether or not the mirror-up operation has been completed.

This is determined from the output signal of the mirror state detector 24.

In step S155, the camera control CP
U21 is F It is determined whether or not the LENS flag is “0”. If the LENS flag is “0” (there is a lens), the process proceeds to step S156. If the LENS flag is “1” (there is no lens), the process proceeds to step S158.

Here, the branching is performed according to the presence or absence of the lens when the lens is not mounted.
This is because the processing and determination up to 157 is unnecessary.

At step S156, the camera control CP
U21 is F It is determined whether or not the MODE flag is “0”. If the MODE flag is “0” (there is a correction mode), the process proceeds to step S157. If the MODE flag is “1” (there is no correction mode), the process proceeds to step S158. .

At step S157, the camera control CP
U21 receives the completion of the mirror up operation, and
An instruction to return to the normal correction operation from the correction operation limited to the correction operation in 149 is transmitted to the shake control CPU 11 by communication.

In step S158, the camera control CP
U21 causes the shutter device 25 to perform an operation, and starts an exposure operation.

The driving of the shutter device 25 is performed by a shutter driving unit 26.

At step S159, the camera control CP
U21 determines whether or not the predetermined exposure time has elapsed. If the predetermined exposure time has elapsed, the process proceeds to step S160, and if not, the determination of step S159 is repeated.

In step S160, the camera control CP
U21 stops the operation of the shutter device 25 and ends the exposure operation.

The driving of the shutter device 25 is performed by a shutter driving section 26.

At step S161, the camera control CP
U21 is F It is determined whether or not the LENS flag is “0”. If the LENS flag is “0” (there is a lens), the process proceeds to step S162. If the LENS flag is “1” (there is no lens), the process proceeds to step S173.

Here, branching is performed according to the presence or absence of a lens when the lens is not mounted.
This is because the processing and determination up to 172 is unnecessary.

At step S162, the camera control CP
U21 communicates an aperture opening drive instruction for opening the aperture at the end of exposure to the lens control CPU 41 by communication.

At step S163, the camera control CP
U21 is F It is determined whether or not the MODE flag is “0”. If the MODE flag is “0” (there is a correction mode), the process proceeds to step S164. If the MODE flag is “1” (there is no correction mode), the process proceeds to step S167. .

In the step S164, the camera control CP
U21 is used for driving the quick return mirror 22 for mirror-down driving for the exposure end operation.
An instruction to stop 4 within the predetermined area is given to the shake control CPU 11 by communication.

The reason is the same as that described in the above-mentioned step S149.

In step S165, the camera control CP
U21 waits for a response from the shake control CPU 11 to the instruction transmission in step S164.

In step S166, the camera control CP
U21 determines whether or not a response indicating that the blur correction optical unit 14 is operating within the predetermined range has been received. If a response indicating that the blur correction optical unit 14 is operating within the predetermined range has been received, the process proceeds to step S167. If no response is received, the process returns to step S165.

In the step S167, the camera control CP
U21 starts the down drive of the quick return mirror 22.

In step S168, the camera control CP
U21 determines whether or not the down drive by the quick return mirror 22 has been completed. If the down drive has been completed, the process proceeds to step S169. If the down drive has not been completed, the process returns to step S167.

In the step S169, the camera control CP
U21 is F It is determined whether or not the MODE flag is "0". If the MODE flag is "0" (there is a correction mode), the process proceeds to step S170. If the MODE flag is "1" (there is no correction mode), the process proceeds to step S171. .

At step S170, the camera control CP
U21 receives the completion of the mirror down operation, and
An instruction to return to the normal correction operation from the correction operation limited to the correction operation in 164 is transmitted to the shake control CPU 11 by communication.

In the step S171, the camera control CP
In response to the end of the exposure operation, U21 causes the film drive unit 28 to drive the film 27 for winding.

In the step S172, the camera control CP
U21 determines whether or not the winding drive of the film 27 has been completed based on the output from the film state detection unit 29. If the winding drive of the film 27 has been completed, the process proceeds to step S173. If not, the process returns to step S171.

In step S173, the camera control CP
In response to the end of the exposure operation, U21 receives the photographing start instruction unit (2
R) It is determined whether or not the shooting start instruction operation by 35 has been canceled. If the shooting start instruction operation has been canceled (2ROFF), the process proceeds to step S174. If not (2RON), the process proceeds to step S173. Repeat the decision.

At step S174, the camera control CP
U21 determines whether or not the shooting preparation instruction operation by the shooting preparation instruction unit (1R) 34 has been cancelled. If the shooting preparation instruction operation has been canceled (1ROFF), the process proceeds to step S175; The process returns to (1RON) to step S173.

In the step S175, the camera control CP
U21 is F It is determined whether or not the LENS flag is "0". If the LENS flag is "0" (there is a lens), the process proceeds to step S176. If the LENS flag is "1" (there is no lens), the process returns to step S103.

Here, the branching is performed according to the presence or absence of the lens. If the lens is not mounted, step S1 is performed.
This is because the processing and determination up to 79 is unnecessary.

In step S176, the camera control CP
U21 is F It is determined whether or not the MODE flag is “0”. If the MODE flag is “0” (there is a correction mode), the process proceeds to step S177. If the MODE flag is “1” (there is no correction mode), the process returns to step S103. .

In step S177, the camera control CP
In response to the release of the shooting preparation instruction operation (1ROFF), the U21 communicates to the shake control CPU 11 an instruction to stop the correction drive of the shake correction optical unit 14.

This is performed to prevent unnecessary power consumption after the photographing preparation instruction operation has been canceled.

In step S178, the camera control CP
U21 waits for a response from the shake control CPU 11.

At step S179, the camera control CP
U21 determines whether or not there has been a reply message indicating that the lock has been completed from the shake control CPU 11, and if there has been a reply message indicating that the lock has been completed, the process returns to step S103; otherwise, the process returns to step S178. .

At step S180, the camera control CP
U21 receives the operation change of the camera power switch 36 from ON to OFF in step S105, and Set the PW flag to "1".

In the step S181, the camera control CP
U21 checks the mounting state of the lens as in step S107 described above.

At step S182, the camera control CP
U21 determines whether or not a lens is attached. If a lens is attached, the process proceeds to step S183, and if it is not attached, the process proceeds to step S184.

In the step S183, the camera control CP
U21 is F The LENS flag is set to "0", and the process proceeds to step S185.

In the step S184, the camera control CP
U21 is F The LENS flag is set to "1".

In the step S185, the camera control CP
U21 is F It is determined whether or not the MODE flag is “0”. If the MODE flag is “0” (there is a correction mode), the process proceeds to step S186. If the MODE flag is “1” (there is no correction mode), the process returns to step S103. .

In the step S186, the camera control CP
U21 is a shake control CPU for protecting the shake correction optical unit 14 when the lens is not mounted in a predetermined state.
Communication with the camera 11 is performed, and an instruction to stop the shake detection operation and to lock (lock) the shake correction optical unit 14 is issued.

This is because the camera is turned off and the lens can be removed at any time.
The fact that the power is OFF makes it impossible to detect this, so if the user accidentally touches the blur correction optical unit 14 with the lens removed,
This is to prevent the damage of the.

In the step S187, the camera control CP
U21 waits for a response from the shake control CPU 11.

In the step S188, the camera control CP
U21 determines whether or not there is a response message of lock completion from the shake control CPU 11, and if there is a response message of lock completion, the process returns to step S103; otherwise, the process returns to step S187. .

At step S189, the camera control CP
U21 receives the shooting preparation operation cancellation (1ROFF) in steps S145 and S146, and LE
It is determined whether or not the NS flag is “0”. If the NS flag is “0” (there is a lens), the process proceeds to step S190, and “
If it is 1 "(no lens), the process returns to step S103.

The reason for branching according to the presence or absence of a lens is that there is no need to perform the processing and determination up to step S194 when no lens is mounted.

At step S190, the camera control CP
U21 receives the shooting preparation operation release (1ROFF),
Communication for instructing the lens control CPU 41 to stop driving the focusing lens 42 is performed.

At step S191, the camera control CP
U21 is F It is determined whether or not the MODE flag is "0". If the MODE flag is "0" (there is a blur correction mode), the process proceeds to step S192. If the MODE flag is "1" (there is no blur correction mode), the process proceeds to step S103. Return to

In step S192, the camera control CP
In response to the release of the shooting preparation instruction operation (1ROFF), the U21 communicates to the shake control CPU 11 an instruction to stop the correction drive of the shake correction optical unit 14.

This is to prevent unnecessary power consumption after the photographing preparation instruction operation has been canceled.

At step S193, the camera control CP
U21 waits for a response from the shake control CPU 11.

At step S194, the camera control CP
U21 determines whether or not there is a response message of lock completion from the shake control CPU 11, and if there is a response message of lock completion, the process returns to step S103; otherwise, the process returns to step S193. .

Next, the processing procedure of the camera shake control CPU 11 of the present invention will be described.

FIGS. 12 to 14 are flowcharts for explaining the processing procedure of the camera shake control CPU 11 of the present invention.

When the processing procedure starts, step S2
In 01, the CPU 11 for shake control performs its own initial setting.

In step S202, the shake control CPU
Reference numeral 11 performs initialization of flags related to the present invention.

F MODE is a flag indicating whether or not the blur correction mode has been selected as the shooting mode. "1" indicates no correction mode selection, and "0" indicates that a correction mode selection has been performed. The initial value of this flag is "1". 1 "(no correction mode).

In step S203, the shake control CPU
Reference numeral 11 denotes a camera control CP which is a main CPU of the camera.
The communication with U21 is performed.

In step S204, the blur control CPU
11 determines whether an instruction to start a shake detection operation has been issued from the camera control CPU 21 through communication, and if an instruction to start a shake detection operation has been issued, step S
It proceeds to 205, otherwise returns to step S203.

This corresponds to step S111 in FIG.

In step S205, the shake control CPU
11 is F It is determined whether or not the MODE flag is “1”. If the MODE flag is “1” (there is no blur correction mode), the process proceeds to step S206. If the MODE flag is “0” (the blur correction mode is present), the process proceeds to step S209. Proceed to.

In step S206, the shake control CPU
Numeral 11 starts the motion detection operation in response to the motion detection operation start instruction.

Specifically, the shake detection sensor (X) 12
X, the power supply operation to the blur detection sensor (Y) 12Y is started.

In step S207, the blur control CPU
Reference numeral 11 performs an initialization operation (setting of initial values and constants) for a continuous blur detection operation based on these sensor outputs.

In step S208, the shake control CPU
11 is F The value of the MODE flag is set to “0” (shake correction mode is selected).

In step S209, the shake control CPU
Reference numeral 11 starts the operation of a control cycle timer for controlling the shake detection / correction operation at a constant cycle.

[0279] This is because it is necessary to accurately detect a constantly changing hand-shake state and to perform control at a constant period in order to accurately correct an image-shake state due to a hand-shake.

Here, the cycle time is, for example, 1 msec.
And so on.

In step S210, the blur control CPU
Reference numeral 11 samples the output of the shake detection sensor (X) 12X and the output of the shake detection sensor (Y) 12Y.

More specifically, the shake control CPU 11 includes a shake detection sensor (X) 12X and a shake detection sensor (Y).
The output of 12Y is A / D converted and sampling is performed.

It is assumed that the subsequent processing relating to shake detection / correction is performed in the same manner on the horizontal axis (X) and the vertical axis (Y) of the film surface.

In step S211, the blur control CPU
Numeral 11 removes (filters) a frequency component signal which is not related to camera shake mixed in the shake sensor output.

This is performed by software in the shake control CPU 11.

In step S212, the CPU for blur control
Reference numeral 11 communicates with the camera control CPU 21.

In step S213, the shake control CPU
11 determines whether or not the communication content in step S212 is related to an instruction to stop the shake detection / correction operation, and if so (stop instruction), to step S22.
0, otherwise, to step S214.

This corresponds to steps S115 and S1 in FIG.
86 and step S118 in FIG.

In step S214, the shake control CPU
In step S212, it is determined whether or not the communication content in step S212 is related to an instruction to stop the blur correction operation. If so (stop instruction), the process proceeds to step S229; otherwise, the process proceeds to step S215. move on.

This corresponds to step S17 in FIG. 9 and FIG.
7, corresponding to S192.

In step S215, the shake control CPU
In step S212, it is determined whether or not the communication content in step S212 is related to the evacuation instruction of the blur correction operation. If so (the evacuation instruction), the process proceeds to step S237; otherwise, the process proceeds to step S216. move on.

This corresponds to steps S149 and S1 in FIG.
64.

In step S216, the shake control CPU
In step S212, it is determined whether or not the communication content in step S212 is related to an instruction to start a blur correction operation. If so (start instruction), the process proceeds to step S248; otherwise, the process proceeds to step S217. move on.

This corresponds to step S13 in FIGS.
1, S157 and S170.

In step S217, the blur control CPU
11, it is determined whether or not the communication content in step S212 relates to the current shooting focal length information transmission;
If so (information transmission), the process proceeds to step S218; otherwise, the process proceeds to step S219.

This corresponds to step S1 in FIG.
26-3.

In step S218, the shake control CPU
Numeral 11 stores the current photographing focal length information in the internal memory from the communication content in step S212.

[0298] This information is used when grasping the image blur state due to camera shake and calculating the blur correction target amount.

In step S219, the CPU for shake control
Step 11 determines whether the control cycle timer started in step S209 has passed a predetermined time. If the predetermined time has passed, the process proceeds to step S209. If not, the determination in step S219 is repeated.

As described above, the blur detection / correction operation is executed in a fixed cycle, and a countermeasure is also taken when the correction mode OFF setting or the 1R OFF operation such as the shake correction operation becomes unnecessary during the execution.

In step S220, the shake control CPU
11 receives the instruction to stop the shake detection / correction operation in step S212, and first stops the output of the correction drive signal corresponding to the currently output camera shake state.

Specifically, signals output from the shake control CPU 11 to the correction drive actuator (X) 13X and the correction drive actuator (Y) 13Y are stopped.

At step S221, the CPU for shake control
Numeral 11 stops the blur detection operation by each sensor.

More specifically, the shake detection sensor (X) 12
X and the power supply to the blur detection sensor (Y) 12Y are cut off.

In step S222, the blur control CPU
Reference numeral 11 denotes a correction encoder (X) 15X and a correction encoder (Y) 15Y for determining the current position of the shake correction optical member.
Check from the output (change) of.

This is because it is necessary to know the current position state of the blur correction optical unit 14 when performing processing (centering operation) for causing the blur correction optical unit 14 to be present at the center of the movable range.

In step S223, the shake control CPU
Reference numeral 11 performs a centering operation for positioning the shake correction optical unit 14 at the center of the movable range.

Specifically, predetermined signals are sent to the correction drive actuator (X) 13X and the correction drive actuator (Y) 13Y based on the detection result in step S222.

As a result, the blur correction optical unit 14 is driven.

In step S224, the shake control CPU
Reference numeral 11 denotes a correction encoder (X) 15X and a correction encoder (Y) 15Y for determining the current position of the shake correction optical member.
Check from the output (change) of.

In step S225, the CPU for shake control
Step 11 determines whether or not the blur correction optical unit 14 has reached a predetermined position (center of the movable range). If it has reached the predetermined position (center of the movable range), the process proceeds to step S226. In this case, the process returns to step S223.

This is performed separately for each of the X axis and the Y axis.

In step S226, the shake control CPU
Reference numeral 11 performs a locking operation of the blur correction optical unit 14.

This is to prevent unnecessary movement when the blur correction optical unit 14 is not performing the blur correction operation. Specifically, the correction optical system lock unit 1
6 is performed.

In step S227, the shake control CPU
Reference numeral 11 communicates with the camera control CPU 21 and sends information indicating that the operation in response to the shake detection / correction stop instruction has been completed.

In step S228, the shake control CPU
11 is F The MODE flag is set to "1".

This corresponds to receiving an instruction from the camera control CPU 21 to stop the shake detection / correction operation.

Then, the shake control CPU 11 returns to step S203.

In step S229, the CPU for blur control
11 receives the instruction to stop the shake correction operation in step S212, and first stops the output of the correction drive signal corresponding to the currently output camera shake state.

Specifically, the signals output from the shake control CPU 11 to the correction drive actuator (X) 13X and the correction drive actuator (Y) 13Y are stopped.

In step S230, the CPU for shake control
Reference numeral 11 denotes a correction encoder (X) 15X and a correction encoder (Y) 15
Check from the output (change) of Y.

This is because it is necessary to know the current position state of the blur correction optical unit 14 when performing processing (centering operation) for causing the blur correction optical unit 14 to be present at the center of the movable range.

In step S231, the CPU for shake control
Reference numeral 11 performs a centering operation for positioning the shake correction optical unit 14 at the center of the movable range.

[0324] Specifically, the shake control CPU 11 sets the correction drive actuator (X) 13X and the correction drive actuator (Y) based on the detection result in step S230.
A predetermined signal is sent to 13Y.

As a result, the blur correction optical unit 14 is driven.

In step S232, the CPU for blur control
Reference numeral 11 denotes a correction encoder (X) 15X and a correction encoder (Y) 15Y for determining the current position of the shake correction optical member.
Check from the output (change) of.

In step S233, the shake control CPU
Step 11 determines whether or not the blur correction optical unit 14 has reached a predetermined position (the center of the movable range). If it has reached, the process proceeds to step S234; otherwise, the process returns to step S231.

This is performed separately for each of the X axis and the Y axis.

In step S234, the blur control CPU
Reference numeral 11 performs a locking operation of the blur correction optical unit 14.

This is to prevent unnecessary movement when the blur correction optical unit 14 is not performing the blur correction operation. Specifically, the correction optical system lock unit 1
6 is performed.

In step S235, the shake control CPU
Reference numeral 11 communicates with the camera control CPU 21 and sends information indicating that the operation in response to the shake detection / correction stop instruction has been completed.

In step S236, the shake control CPU
Reference numeral 11 performs 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 sensor (X) 12X and the shake detection sensor (Y) 12Y.

This is performed to cancel the drift variation of the sensor.

After that, the shake control CPU 11 returns to step S203.

In steps S237 to S244, the blur control CPU 11 performs a process when receiving the evacuation instruction of the blur correction operation in step S212.

Even if the evacuation instruction is issued, if the current position of the shake correction optical unit 14 does not hinder the up / down operation of the quick return mirror 22, the shake control CPU 11 performs the normal operation. The shake correction operation is continued, and the calculation of the target signal for the shake correction based on the shake detection result is continued regardless of the presence or absence of the evacuation instruction.

At step S237, the shake control CPU
Reference numeral 11 denotes an integration operation for converting outputs of the shake detection sensor (X) 12X and the shake detection sensor (Y) 12Y, that is, current camera shake (angular velocity) information into position information for image shake correction. .

At step S238, the CPU for shake control
Reference numeral 11 denotes a correction encoder (X) 15X and a correction encoder (Y) 15
Check from the output (change) of Y.

This is to determine whether the current position of the shake correction photon unit 14 is in a range that hinders the operation of the quick return mirror 22, and to determine in step S12 in FIG.
This determination is performed to determine whether the angle is within the maximum drivable angle stored in step 6 and to obtain the current position information of the shake correction optical unit 14 for the normal shake correction operation.

In step S239, the CPU for shake control
Reference numeral 11 denotes whether or not the blur correction optical unit 14 is within the range in which the operation of the quick return mirror 22 is hindered, and whether or not the blur correction optical unit 14 is within the maximum drivable angle, that is, whether or not it is within the normal predetermined area. By judging whether or not it is within the predetermined area, the process proceeds to step S240, otherwise, the process proceeds to step S244.

At step S240, the shake control CPU
11 is the result of the integration in step S237;
The target position signal of the correction lens is calculated based on the current position information of the blur correction optical unit 14 in 38 and the focal length information in step S218.

In step S241, the shake control CPU
11 stores the target position signal calculated in step S240 in an internal memory.

This is because the blur correction optical unit 14 cannot be in the original operating position state due to the retreat work, so that it can smoothly shift to the original operating position state for blur correction after the retreat is completed. This is for keeping the position information.

At step S242, the shake control CPU
Reference numeral 11 sets a target position signal for retreating a predetermined position of the blur correction optical unit 14 separately from the calculation result in step S240.

In step S243, the blur control CPU
Reference numeral 11 outputs a drive signal to the correction drive actuator (X) 13X and the correction drive actuator (Y) 13Y based on the target position signal set in step S242.

Thereafter, the blur control CPU 11 proceeds to step S219.

In step S244, the shake control CPU
11 communicates with the camera control CPU 21 for transmitting information indicating that the retraction of the blur correction optical unit 14 has been completed, in response to the result of the determination in step S239.

It is to be noted that this communication need not be performed once after it has been performed.

In step S245, the blur control CPU
11 is the result of the integration in step S237;
The target position signal of the correction lens is calculated based on the current position information of the blur correction optical unit 14 in 38 and the focal length information in step S218.

In step S246, the shake control CPU
Step 11 checks the current focal length value.

This is performed for two reasons, as described at step S139 in FIG.

In step S247, the CPU for shake control
Step 11 determines whether the current focal length is within a predetermined range. If the current focal length is within a predetermined range, the process returns to step S243; otherwise, the process proceeds to step S2.
Proceed to 47-1.

At step S247-1, the shake control C
The PU 11 determines whether or not the correction target position signal calculated in step S245 is within a predetermined range. If the correction target position signal is within the predetermined range, the PU 11 determines in step S243.
Otherwise, the process proceeds to step S247-2.

In the step S247-2, the shake control C
The PU 11 receives the fact that the correction target signal is out of the predetermined range, and controls (changes) the correction target position signal calculated in step S245.

As described above, this is changed within a range where the blur correction operation is stable and there is no image deterioration.

After that, the shake control CPU 11 returns to step S243.

[0357] From step S248 to step S257, the blur control CPU 11 performs processing when receiving the blur correction operation start instruction and the continuation instruction in step S212.

In step S248, the shake control CPU
Reference numeral 11 denotes a blur correction optical unit 14 which is a correction optical system lock unit 16.
It is determined whether or not it is locked, and if it is locked, the locked state is released in step S249,
If not locked, the process proceeds to step S250.

In step S250, the shake control CPU
Reference numeral 11 denotes an integration operation for converting outputs of the shake detection sensor (X) 12X and the shake detection sensor (Y) 12Y, that is, current camera shake (angular velocity) information into position information for image shake correction. .

In step S251, the shake control CPU
Reference numeral 11 denotes a correction encoder (X) 15X and a correction encoder (Y) 15
Check from the output (change) of Y.

This is performed to obtain the current position information of the blur correction optical unit 14 for the blur correction operation.

In step S252, the shake control CPU
11 is the result of the integration in step S250, step S2
A target position signal of the correction lens is calculated based on the current position information of the blur correction optical unit 14 in 51 and the focal length information in step S218.

In step S253, the shake control CPU
Step 11 checks the current focal length value.

This is the same reason as described in step S139 in FIG. 8 and step S246 in FIG.

[0365] In step S254, the blur control CPU
11 judges whether or not the current focal length is within a predetermined range, and proceeds to step S257 if the current focal length is within the predetermined range; otherwise, proceeds to step S25.
Go to 5.

In step S255, the CPU for shake control
11 determines whether the correction target position signal calculated in step S252 is within a predetermined range, and if the correction target position signal is within a predetermined range, the process proceeds to step S257;
Otherwise, the process proceeds to step S256.

In step S256, the shake control CPU
Numeral 11 controls (changes) the correction target position signal calculated in step S252 in response to the correction target position signal being outside the predetermined range.

As described above, the change is performed within a range where the blur correction operation is stable and there is no image deterioration.

[0369] In step S257, the blur control CPU
Reference numeral 11 outputs a drive signal to the correction drive actuator (X) 13X and the correction drive actuator (Y) 13Y based on the set target position signal.

Thereafter, the blur control CPU 11 proceeds to step S219.

Next, the processing procedure of the lens control CPU 41 of the camera according to the present invention will be described.

FIG. 15 is a flowchart for explaining the processing procedure of the lens control CPU 41 of the camera according to the present invention.

When the processing procedure starts, step S3
In 01, the lens control CPU 41 sets its own initial settings.

In step S302, the lens control CP
U41 checks the position state of the variable power lens 48, that is, the current focal length state, based on the output of the variable power lens position detection unit 50.

In step S303, the lens control CP
U41 stores the focal length information confirmed in step S302 in the internal memory.

At step S304, the lens control CP
U41 determines whether or not there has been a transmission request for focal length information from the camera control CPU 21 on the body side.
Proceed to 6.

This corresponds to step S123 in FIG.

At step S305, the lens control CP
U41 is a camera control CP for transmitting focal length information.
Communication with U21 is performed.

In step S306, the lens control CP
U41 communicates with the camera control CPU 21 to receive the next operation instruction from the camera body side.

At step S307, the lens control CP
U41 determines whether or not the communication content in step S306 is related to an instruction to start driving the focusing lens 42 for focusing. If so (start instruction), the process proceeds to step S308, and if not, the process proceeds to step S308. In this case, the process proceeds to step S309.

This corresponds to step S133 in FIG.

At step S308, the lens control CP
The U41 communicates with the camera control CPU 21 to obtain information on the driving direction and amount of the focusing lens 42.

In step S309, the lens control CP
U <b> 41 checks the current position state of the focusing lens 42 by the focusing lens position detection unit 43.

In step S310, the lens control CP
U41 drives the focusing lens 42 by the lens driving actuator 44 based on the information in step S308 and step S309 so as to be in focus.

In step S311, the lens control CP
U41 determines whether or not a command to stop driving the focusing lens 42 has been issued from the camera control CPU 21.

[0386] This drive stop instruction is issued from the camera control CPU 21 when it is determined that focus has been achieved or when the operation of the photographing preparation instructing section (1R) 34 is released while the focusing lens 42 is being driven. Is what is generated.

If the lens control CPU 41 receives an instruction to stop driving the focusing lens 42 from the camera control CPU 21, the flow advances to step S312.
If not, the process returns to step S308.

This corresponds to step S136 in FIG. 8 and step S190 in FIG.

In step S312, the lens control CP
U41 stops driving the focusing lens 42 in response to the determination in step S311.

Thereafter, the lens control CPU 41 returns to step S302.

At step S313, the lens control CP
U41 determines whether or not the communication content in step S306 is related to transmission of aperture value information. If so (information transmission), the process proceeds to step S314; otherwise, the process proceeds to step S316.

This corresponds to step S1 in FIG.
37-1.

At step S315, the lens control CP
The U41 obtains aperture value information at the time of shooting by communicating with the camera control CPU 21, and stores the information in the internal memory.

Thereafter, the lens control CPU 41 returns to step S302.

In step S316, the lens control CP
U41 determines whether or not the communication content in step S306 is related to an aperture drive instruction. If so (drive instruction), the process proceeds to step S317; otherwise, the process proceeds to step S321.

This corresponds to step S152 in FIG.

In step S317, the lens control CP
U41 reads the aperture value information stored in step S315.

In step S318, the lens control CP
U41 drives the aperture blade 45 by the aperture driving actuator 47 so that the aperture value information read in step S317 is obtained.

In step S319, the lens control CP
U41 reads the output of the aperture position detector 46 in order to know the current aperture state of the aperture blades 45.

At step S320, the lens control CP
U41 determines whether or not the aperture state is read in step S317, and if so, in step S320-1 the aperture driving actuator 47
Stops the aperture driving of the aperture blade 45 by the step S3.
02, if not, return to step S318.

At step S321, the lens control CP
U41 determines whether or not the communication content in step S306 is related to the aperture opening drive instruction. If so (opening instruction), the process proceeds to step S317; otherwise, the process returns to step S302. .

This corresponds to step S162 in FIG.

At step S322, the lens control CP
U41 drives the diaphragm blade 45 by the diaphragm driving actuator 47 so as to be in the open state.

In step S323, the lens control CP
U41 reads the output of the aperture position detector 46 in order to know the current aperture state of the aperture blades 45.

In step S324, the lens control CP
U41 determines whether or not the aperture is open,
If so, the diaphragm driving of the diaphragm blade 45 by the diaphragm driving actuator 47 is stopped in step S324-1, and the process returns to step S302. If not, the process returns to step S322.

Next, the movable range of the parallel glass plate (14) used as the camera shake correction optical unit 14 of the camera according to the present invention will be described.

FIG. 16 is a diagram showing the movable range of the parallel glass plate (14) used as the blur correction optical unit.

[0408] Fig. 16A is a diagram showing a case where the photographing lens 02 is mounted on the camera body 01 and is not corrected.

In FIG. 16A, reference numeral 70 denotes an opening on the image plane side of the taking lens 02. The diameter of the parallel glass plate 14 is larger than the diameter of the lens opening 70. is necessary.

[0410] Fig. 16B is a diagram showing a state in which the photographing lens 02 is mounted on the camera body 01 and the state is corrected to the maximum.

[0411] The parallel glass plate 14 is tilted just before it comes into contact with the lens opening 70.

At this time, the maximum drivable angle θ1 is obtained in step S126 in FIG. 8 by communication from the lens control CPU 41, and is obtained in step S23 in FIG.
9 is used to determine whether or not the parallel glass plate 14 is within a predetermined range, as described above.

FIG. 16C shows a state in which the taking lens 02 is not mounted on the camera body 01 and the parallel glass plate 14
FIG. 5 is a diagram showing a state in which is tilted to the maximum.

At this time, the maximum drivable angle θ2 is, of course, in a range that does not collide with the quick return mirror 22 and does not protrude from the mount 08.

[0415] The value relating to the maximum drivable angle θ2 is
It may be stored in a non-volatile memory not shown in FIG. 2 and used for the determination in step S239 in FIG.

Also, the maximum drivable angle at which the parallel glass plate 14 is tilted to cause an aberration and the optical performance is reduced may be used for the determination in step S239 in FIG. Of course, it is also necessary to design the parallel glass plate 14 so as not to collide when the mount cap is mounted.

(Modification) The mechanism for correcting the camera shake by tilting the parallel glass plate 14 has been described. The mechanism for correcting the camera shake by driving the lens group having power in the direction perpendicular to the optical axis. May be.

In this case, only the concept of the maximum drive range is different.

[0419] In addition to the claims 1 to 3 described in the claims, the present invention shown in the above-described embodiments includes the inventions shown as Appendices 1 to 3 below. include.

(Supplementary Note 1) In a camera in which the taking lens is detachable from the camera body, there is provided an optical correcting means capable of correcting camera shake of a photographer, and the optical correcting means is provided with the taking lens in the camera body. A camera shake correction camera, which is installed near a detachable portion of the camera.

(Supplementary Note 2) The camera shake correction camera according to supplementary note 1, wherein the optical correction means is a correction means for tilting a parallel glass plate having no power.

(Supplementary Note 3) The drivable range of the optical correction means is a range in which the optical correction means does not contact the taking lens opening when the taking lens is mounted, a range in which the main mirror in the camera body is not contacted, The camera shake correction camera according to claim 2, wherein the camera shake correction lens is in a range not outside the camera body from the photographing lens attaching / detaching portion.

[0423]

Therefore, as described above, according to the present invention, there is provided a camera shake correction camera capable of confirming the effect of correction in the viewfinder without increasing the size of the photographing lens or increasing the cost. can do.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a conceptual configuration of a camera shake correction camera according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a detailed configuration of a camera shake correction camera according to an embodiment of the present invention.

FIG. 3 is a side view of the camera of the present invention, and is a view schematically showing a positional relationship inside main components.

FIG. 4 is an oblique view of the camera of the present invention.

FIG. 5 is a front view of the camera body according to the present invention.

FIG. 6 is a diagram showing a camera shake correction mechanism applied to the embodiment of the present invention.

FIG. 7 is a flowchart illustrating a processing procedure of a camera control CPU 21 as a main CPU of the camera according to the present invention.

FIG. 8 is a flowchart illustrating a processing procedure of a camera control CPU 21 as a main CPU of the camera according to the present invention.

FIG. 9 is a flowchart shown to explain a processing procedure of a camera control CPU 21 as a main CPU of the camera according to the present invention.

FIG. 10 is a main CP of the camera according to the present invention;
9 is a flowchart shown to explain a processing procedure of the camera control CPU 21 as U.

FIGS. 11A and 11B are respectively a camera control C as a main CPU of the camera according to the present invention.
As a flowchart shown to explain the processing procedure of the PU 21, the processing between steps S125 and S128 in FIG.
And an additional flowchart inserted between steps S136 and S139.

FIG. 12 is a flowchart illustrating a processing procedure of a camera shake control CPU 11 of the camera according to the present invention.

FIG. 13 is a flowchart illustrating a processing procedure of a camera shake control CPU 11 of the camera according to the present invention.

FIG. 14 is a flowchart for explaining a processing procedure of a camera shake control CPU 11 of the camera according to the present invention.

FIG. 15 is a flowchart for explaining a processing procedure of a lens control CPU 41 of the camera according to the present invention.

FIG. 16 is a diagram showing a movable range of a parallel glass plate (14) used as the shake correction optical unit 14.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Camera body, 2 ... Photographing lens, 3 ... Camera shake detection part, 4 ... Camera shake control part, 5 ... Data communication part, 6 ... Camera shake correction part, 7 ... Mount part, A ... Perform general camera operation Part, B: a part for performing shake detection / correction operation, C: part of an interchangeable lens, 21: CPU for camera control, 11: CPU for control of blur, 41: CPU for lens control, 22: quick return mirror, 23: mirror Driving unit, 24: mirror state detecting unit, 25: shutter device, 26: shutter driving unit, 27: film, 28: film driving unit, 29: film state detecting unit, 30: lens exchange switch (SW), 31: lens Attachment detection unit, 32: body side communication unit, 33: shooting mode setting unit, 34: shooting preparation instruction unit (first release switch,
1RSW), 35 ... shooting start instruction section (second release switch, 2
RSW), 36: Camera power switch, 37: Camera status notification unit, 12: Shake detection sensor, 12X: Shake detection sensor (X), 12Y: Shake detection sensor (Y), 13: Correction drive actuator, 13X: Correction Drive actuator (X), 13Y: Correction drive actuator (Y), 14: Blur correction optical unit, 15: Correction encoder, 15X: Correction encoder (X), 15Y: Correction encoder (Y), 42: Focusing lens, 43 ... Focusing lens position detecting unit, 44: lens driving actuator, 45: diaphragm blade, 46: diaphragm position detecting unit, 47: diaphragm driving actuator, 48: variable magnification lens, 49: zoom operation unit, 50: variable magnification lens position Detection unit, 51: Lens data communication unit, 01: Camera body main unit, 02: Shooting lens , 03: finder optical system, 04: finder window, 05: strobe storage, 06: grip, 07: screen, 08: mount, 09: release button, 61X: worm gear, 62X: gear, 65X: groove, 66X: Pin, 67X: rotating shaft, 68: inner frame, 69: outer frame, 13X: motor, 63X: disk, 64X: photo interrupter, 70: lens opening.

Claims (3)

[Claims] 1. A camera having a photographic lens detachable from a camera body, comprising: an optical correction means capable of correcting a camera shake of a photographer; A camera shake correction camera, which is installed near a part. 2. The camera shake correction camera according to claim 1, wherein the vicinity of the attaching / detaching portion of the taking lens is between a main mirror in the camera body and the attaching / detaching portion of the taking lens. 3. The camera according to claim 1, further comprising a driving unit configured to drive the optical correction unit, wherein the driving unit is provided at an upper position of the optical correction unit in the camera body or on a side opposite to a grip portion of the camera body. 2. An arrangement according to claim 1, wherein
Or the camera shake correction camera according to 2.