JP2003084328A - Image stabilizer, camera lens, camera body and camera system - Google Patents

Abstract

(57) [Summary] [PROBLEMS] In an optical device having an image blur correction function,
Always realize highly accurate defocus calculation. SOLUTION: An interchangeable lens starts a routine for checking a communication interrupt request from a camera body (S1102). A value is set in the auxiliary light emission flag and the flag SENS according to the communication content from the camera body. The value of the auxiliary light emission flag is checked (S1104). If the light projection pattern is not projected on the camera body side, the shake detection calculation (S1106) and the correction lens drive (S110)
8) is performed to correct the image blur. If the light projection pattern is projected on the subject on the camera body side, the flag SEN
The defocus detectable direction of the AF sensor of the camera body is confirmed based on the value of S (S1112 to S1116), and the center drive and stop of the correction lens and the drive for image blur correction are performed according to the detectable direction. (S1118-S
1128).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera having an image blur correction function.

[0002]

2. Description of the Related Art Conventionally, an optical device such as a camera has a function of correcting image blur caused by camera shake. Image shake is movement of a subject image on the image receiving surface of the camera, which is caused by displacement of only the camera side with respect to the subject due to camera shake or the like. Image blur correction is performed as follows. An angular velocity sensor is provided to detect camera shake, and an output signal from the angular velocity sensor is integrated to calculate the camera shake amount. Further, a correction optical system for deflecting the optical axis of the photographing optical system is arranged so as to constitute a part of the photographing optical system. This correction optical system is driven so as to cancel the movement of the subject image based on the camera shake amount calculated as described above. As a result, image blur caused by camera shake or the like is corrected.

On the other hand, focus detection by a phase difference method is known as an autofocus system for cameras. In the phase-difference focus detection, the reflected light from the subject that has passed through the shooting optical system is divided by the condenser lens and the diaphragm mask, and the light is detected by the separator lens provided corresponding to each of the divided reflected light. Re-image. The defocus amount of the photographing optical system is detected based on the interval between the two images re-formed on the light receiving sensor. Therefore, when the subject is under low illuminance or when the brightness contrast of the subject is low, the defocus amount is not accurately detected, and sufficient accuracy cannot be obtained in the autofocus performance.

In order to solve such problems and improve the autofocus performance under low illuminance and low contrast, a camera equipped with a fill light system is known. In the fill light system, projection light is projected toward a subject through a contrast pattern and a projection optical system having a predetermined configuration. That is, a predetermined light projection pattern is projected on the subject. The light projection pattern reflected by the subject is incident on the above-described light receiving sensor, and the defocus amount is calculated based on the image interval of the light projection pattern re-imaged on the light receiving sensor. Therefore, focus detection is possible regardless of the brightness of the external world and the contrast of the brightness of the subject.

[0005]

By the way, even if camera shake occurs while the projection pattern is projected by the auxiliary light system, the projection pattern to be re-imaged is not displaced on the light receiving sensor. This is because the light emitting means for the projection light, the contrast pattern, the projection optical system, and the like, and the light receiving sensor are both provided on the camera side. On the other hand, the above-mentioned image blur correction is executed by driving a correction optical system which constitutes a part of the photographing optical system. Therefore, when hand shake occurs during the operation of the auxiliary light system and image shake correction is performed, the light projection pattern that passes through the photographing optical system and is re-imaged on the light receiving sensor is driven by the correction optical system. Will be displaced above. As a result, there is a problem that the contrast of the light projection pattern on the light receiving sensor is lowered and the accuracy of the defocus amount calculation is lowered.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a camera having an image blur correction function, which always realizes highly accurate autofocusing.

[0007]

An image blur correction apparatus according to the present invention is a photographing optical system including a plurality of optical systems, and auxiliary light projection means for projecting auxiliary light having a predetermined light projection pattern toward a subject. Defocus amount detecting means for detecting the defocus amount of the optical image of the subject formed on the imaging medium via the photographing optical system by the phase difference detection method, and the optical image is focused based on the defocus amount. In the camera having the focusing means for driving the photographing optical system, the blur detecting means for detecting the blurring of the optical axis of the photographing optical system, the correction optical system for image blur correction included in the photographing optical system, and the correction optical system. Shake detection is performed so as to cancel the shake of the optical image caused by the shake of the optical axis of the photographing optical system and the driving means for driving the correction optical system in the two axis directions orthogonal to each other in the plane perpendicular to the optical axis of the system. Detected by means And a drive control means for controlling the drive means on the basis of the blurring of the optical axis, wherein the drive control means includes a correction optical system for correcting the correction optical system while the auxiliary light projection means is operating. The optical axis is driven to a reference position where the optical axis coincides with the optical axes of other optical systems of the photographing optical system, and the optical axis is stopped at this reference position.

Further, the image blur correction device according to the present invention comprises a photographing optical system comprising a plurality of optical systems, auxiliary light projection means for projecting auxiliary light having a predetermined light projection pattern toward a subject, and photographing optical system. Defocus amount detecting means for detecting the defocus amount of the optical image of the subject formed on the image pickup medium through the system by the phase difference detection method using the light receiving sensor,
In a camera provided with a focusing means that drives a photographing optical system so that an optical image is focused based on a defocus amount,
A shake detection unit that detects a shake of the optical axis of the photographing optical system, a correction optical system for image shake correction included in the photographing optical system, and a correction optical system orthogonal to each other in a plane perpendicular to the optical axis of the correction optical system.
A drive unit that drives the correction optical system in the axial direction and a drive unit that is based on the optical axis shake detected by the shake detection unit so as to cancel the shake of the optical image caused by the shake of the optical axis of the photographing optical system. An image blur correction apparatus comprising: a drive control unit for controlling the optical axis of the image forming apparatus, wherein the drive control unit is arranged in a direction perpendicular to the direction in which the defocus amount can be detected by the light receiving sensor while the auxiliary light projection unit is operating. In addition, the correction optical system is driven so that the optical axis of the correction optical system is located on a plane including the optical axes of the other optical systems of the photographing optical system, and the detection direction of the light receiving sensor in the two axis directions is The driving of the correction optical system in the parallel direction is stopped.

Preferably, the drive control means cancels the blurring of the optical image in the axial direction intersecting the detectable direction of the light receiving sensor among the two axial directions while the auxiliary light projection means is operating. The correction optical system is driven.

Further, the photographing lens according to the present invention projects auxiliary light having a predetermined light projection pattern toward a subject,
A photographing lens mounted on a camera body having an automatic focus detection function for detecting a defocus amount of an optical image of a subject based on the reflected light by a phase difference detection method,
An image pickup optical system having a correction optical system for image shake correction, which forms an optical image on an image pickup medium provided in a camera body, a shake detection unit for detecting a shake of an optical axis of the image pickup optical system, and a correction optical system. Drive means for driving the correction optical system in two axial directions orthogonal to each other in a plane perpendicular to the optical axis of the system, and the blurring of the optical image due to the blurring of the optical axis of the photographing optical system are offset,
The camera operation is provided with drive control means for controlling the drive means based on the shake of the optical axis detected by the shake detection means, and camera operation state detection means for detecting whether or not the camera body is projecting auxiliary light. While the state detection means detects that the auxiliary light is projected, the drive control means moves along the direction perpendicular to the direction in which defocus can be detected by the light receiving sensor, and the other optical system of the photographing optical system. The correction optical system is driven so that the optical axis of the correction optical system is located on the plane including the optical axis of, and the correction optical system is driven in the direction parallel to the detectable direction of the light receiving sensor in the two axis directions. It is characterized by stopping.

Preferably, while the camera operating state detecting means detects that the auxiliary light is projected, the drive control means is in the axial direction intersecting the detectable direction of the light receiving sensor in the two axial directions. , Driving the correction optical system for canceling the blur of the optical image.

The camera body according to the present invention is a camera body to which a taking lens is attached, and a focus for detecting a defocus amount of an optical image of a subject formed through the taking lens by a phase difference detection method. Detection means, auxiliary light projection means for projecting auxiliary light having a stripe-shaped projection pattern toward a subject to assist detection of the defocus amount by the focus detection means, and defocus detected by the focus detection means Lens driving amount calculation means for calculating the driving amount of the photographing lens so that the optical image is focused based on the amount, information about the direction in which defocus can be detected by the light receiving sensor in the focus detection means, and auxiliary light projection means And the information indicating that the auxiliary light is projected on the subject,
And an information transmitting unit for transmitting the information to the photographing lens.

Further, the camera system according to the present invention includes a photographing optical system including a correction optical system for image blur correction, a blur detecting means for detecting blurring of the optical axis of the photographing optical system, and an optical axis of the correction optical system. Shooting including drive means for driving the correction optical system in two axial directions orthogonal to each other in a plane perpendicular to the plane, and drive control means for controlling the drive means based on the blur of the optical axis detected by the blur detection means. A defocus amount detecting means for detecting a defocus amount of an optical image of a subject formed through a photographing optical system in a state where the lens and the photographing lens are mounted, and a defocus amount detecting means. In order to assist detection of the defocus amount, auxiliary light projection means for projecting auxiliary light having a predetermined light projection pattern toward the subject, and the optical image is focused based on the defocus amount. And a communication means for transmitting data between the photographing lens and the camera body when the photographing lens is mounted on the camera body. The information about the direction in which the defocus can be detected by the light receiving sensor in the focus amount detection means and the auxiliary light projection information indicating that the auxiliary light projection means is activated in the camera body and the auxiliary light is projected on the subject are the communication means. When the auxiliary projection information is transmitted from the camera body to the photographing lens via the camera lens, the drive control means
The correction optical system is driven so that the optical axis of the correction optical system is located along a direction perpendicular to the detectable direction of the light receiving sensor and on a plane including the optical axes of other optical systems of the photographing optical system. The driving of the correction optical system is stopped in a direction parallel to the detectable direction of the light receiving sensor in the axial direction.

Preferably, when the auxiliary light projection information is transmitted to the photographing lens, the drive control means cancels the blurring of the optical image only in the two axial directions which intersect the detectable direction of the light receiving sensor. The correction optical system for driving is performed.

Further, in the image blur correction apparatus according to the present invention, when the auxiliary light projecting means is operated, the drive control means sets the correction optical system to the optical axis of the correction optical system before starting the operation of the auxiliary light projecting means. Is driven to a reference position that coincides with the optical axis of another optical system of the photographing optical system, and is stopped at this reference position.

Further, in the image blur correction apparatus according to the present invention, the drive control means can detect the defocus amount by the light receiving sensor before the operation of the auxiliary light projection means is started when the auxiliary light projection means is operated. The correction optical system is driven so that the optical axis of the correction optical system is located on a plane including the optical axis of the other optical system of the photographing optical system along the direction perpendicular to the direction, and Among them, the driving of the correction optical system in the direction parallel to the detectable direction of the light receiving sensor is stopped.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of a camera to which the first embodiment according to the present invention is applied. The camera 10 is an interchangeable lens single-lens reflex camera. A shutter button 101 and a pop-up unit 102 are provided on the upper surface of the camera body 100. Shutter button 101 is 2
When the switch is pushed in one step, a photometry switch described later is turned on to start photometry processing, and when pushed in two steps, a release switch described below is turned on and a release operation is started. Pop-up unit 102
A projection optical system 198 and a strobe 103 of an auxiliary light unit, which will be described later, are held in. An interchangeable lens 200 (photographing lens) is attached to the front side of the camera body 100. A focusing optical system 220 is held by the lens barrel 201 of the interchangeable lens 200.

FIG. 2 is a block diagram showing the electrical construction of the camera 10, in which the camera body 100 and the interchangeable lens 20 are shown.
It consists of zero. A camera control circuit (camera CPU) 110 including a microcomputer is provided in the camera body 100, and a lens control circuit (lens CPU) 210 including a microcomputer is provided in the interchangeable lens 200. The camera body 100 and the interchangeable lens 200 are respectively provided with a plurality of contact pins 300C and 300L. When the interchangeable lens 200 is mounted on the camera body 100, the corresponding contact pins 300C and 300L are brought into contact with each other and electrically. Connected. As a result, the camera CPU 110 and the lens CPU 210 are connected by the communication bus 301, and various communication data and control signals are transmitted between the camera body 100 and the interchangeable lens 200.

In the camera body 100, above the quick return mirror 121, a pentaprism 122 which constitutes a part of the finder optical system is arranged. The quick return mirror 121 is positioned at the angle indicated by the solid line except when photographing. A part of the light beam that has passed through the focusing optical system 220 and the image blur correction unit 230 provided in the interchangeable lens 200 is reflected by the click return mirror 121 and guided to the eyepiece lens 123 of the finder optical system via the pentaprism 122. . When shooting
The quick return mirror 121 is flipped up to the position shown by the broken line, and the light beam that has passed through the focusing optical system 220 and the image blur correction unit 230 is guided to the film F via the shutter mechanism 124. The photographing optical system of the single-lens reflex camera according to the present embodiment includes a focusing optical system 220, a correction optical system provided in an image blur correction unit 230 described later,
And a variable power optical system (not shown).

The camera CPU 110 has a motor drive circuit 1
30 is connected. The motor drive circuit 130 drives a mirror motor 131 that drives the quick return mirror 121 to flip up, and drives a winding motor 132 that winds up the film F.

The camera CPU 110 has a main switch 1
41, a photometric switch 142, a release switch 143,
The winding completion switch 144 and the mirror UP switch 145 are connected. The main switch 141 is a switch for turning on the power of the camera and permitting the operation. When the main switch 141 is turned on, the camera body 100 is powered on, and the interchangeable lens 200 is also powered on. When the shutter button 101 (see FIG. 1) is half-pressed, the photometric switch 142 is turned on, the photometric processing is performed by the photometric sensor 150, and when the shutter button 101 is fully pressed, the release switch 143 is turned on and the release operation is performed. To be executed. The mirror UP switch 145 is turned on / off according to the start and end of the release operation. Camera CPU1
10 is a quick return mirror 121 for the motor drive circuit 130 based on turning on / off of the mirror UP switch 145.
A control signal for starting and stopping the flip-up drive is output. Further, the winding motor 132 for winding one frame of the film F is driven and stopped via the motor drive circuit 130 according to the on / off of the winding completion switch 144.

The camera CPU 110 controls the shutter mechanism 124 via the release control IF 160 according to the start and end of the release operation, and the interchangeable lens 200 via the release control IF 160 and the aperture control amount transmission mechanism 303. The diaphragm mechanism 240 provided inside is controlled. Aperture control amount transmission mechanism 303 and aperture mechanism 2
40 is connected by corresponding contact pins 300C and 300L contacting each other.

The camera CPU 110 has a display device 170,
A non-volatile memory (EEPROM) 180 is connected. The display device 170 is provided to display the shooting mode, shutter speed, and the like. EEPROM 1
Various data regarding the AF operation is stored in 80.

A sub mirror 190 is provided on the rear surface of the quick return mirror 121. A part of the light beam that has passed through the focusing optical system 220 and the image blur correction unit 230 passes through the quick return mirror 121, is reflected by the sub mirror 190, and is guided to the AF sensor 191.

The AF sensor 191 uses the phase difference detection method to focus the optical system 220 and the image blur correction means 23.
It is a conventionally known sensor that detects the defocus amount of a photographing optical system including a correction optical system and a variable power optical system provided at 0. Image sensor (not shown) in the AF sensor 191
Are arranged at positions optically equivalent to the focusing screen B and the film surface F. Therefore, the focus state on the reticle B is equivalent to the focus state on the film surface F, and when the image on the reticle B formed by the photographic optical system is imaged, in other words, by the photographic optical system. The in-focus state is when the focus position matches the focus plate B.

The AF sensor 191 detects the focus state of the image on the film surface F (planned focal plane) formed by the photographing optical system as a defocus amount. That is, the AF sensor 191 detects a defocus amount that indicates in what direction on the optical axis the focal position of the image formed by the imaging optical system at the present time is displaced from the focusing screen B or the film surface F. Specifically, the reflected light from the subject that has passed through the photographing optical system is divided by a condenser lens (not shown) and a diaphragm mask (not shown), and a separator is provided corresponding to each of the divided reflected lights. An image is re-formed on the light receiving area of the image sensor of the AF sensor 191 via a lens (not shown). The defocus amount of the photographing optical system is detected based on the interval between the two images re-formed on the light receiving area. The camera CPU 110 calculates the driving direction and the driving amount of the focusing optical system 220 based on the defocus amount detected by the AF sensor 191, and outputs the calculation result to the motor control circuit 192.

2 re-imaged in the AF sensor 191
Information on the direction to detect the distance between two images, ie A
Information regarding the defocus detectable direction by the F sensor 191 is stored in the EEPROM 180. First
In the embodiment, the detection directions of the AF sensor 191 are the horizontal direction in the normal camera posture (direction orthogonal to the paper surface of FIG. 2), the vertical direction in the normal camera posture (vertical direction in FIG. 2), and the normal camera posture. Either horizontally or vertically. In this specification, the horizontal direction and the vertical direction in the normal camera posture will be referred to as the “horizontal direction” and the “vertical direction”, respectively.

The motor drive circuit 192 is the AF motor 19
The AF motor 193 is connected to a gear block 194. Gear block 194
Is an interchangeable lens 20 via a joint mechanism (not shown).
It is connected to a gear block 250 provided in the 0. Although the focusing optical system 220 is shown as one lens in FIG. 2, it is actually composed of a plurality of lenses, and the gear block 25 is used for focusing.
It can be moved in the optical axis direction by 0. That is, the AF motor 193 is driven based on the calculation result of the AF sensor 191, and the interchangeable lens 2 is driven in association with the driving of the AF motor 193.
The focusing optical system 220 on the 00 side is moved along the optical axis, and as a result, the focusing operation is performed.

An auxiliary light unit 195 is connected to the camera CPU 110. The auxiliary light unit 195 is an ILED (Infrared Light Emitting) that emits near infrared light.
Diode) 196, a contrast pattern 197 having a predetermined stripe shape, and a projection optical system 198 for guiding the light emitted from the ILED 196 to a subject. Contrast The contrast pattern 197 is interposed between the ILED 196 and the projection optical system 198, so that when the near-infrared light is emitted from the ILED 196, a striped light projection pattern is projected onto the subject. The projection of the projection pattern by the auxiliary light unit 195 is performed when it is difficult to calculate the defocus amount of the AF sensor 191 based on the reflected light of the subject, such as when the contrast of the luminance of the subject is low, or when shooting under low illumination. To be executed.

The projection pattern reflected by the subject passes through the focusing optical system 220 and the image blur correction means 230, passes through the return mirror 121, is reflected by the sub mirror 190, and is guided to the AF sensor 191. AF
The sensor 191 calculates the defocus amount of the focusing optical system 220 based on the light projection pattern re-formed on the image sensor as described above, and outputs the defocus amount to the camera CPU 110.

In such an auxiliary light system, the direction in which the stripes of the contrast pattern 197 extend and A
The defocus detectable directions by the F sensor 191 are configured to intersect with each other. For example, the AF sensor 19
When the detection direction of 1 is configured to be the horizontal direction,
The contrast pattern 197 is arranged so that the stripe direction is the vertical direction.

The lens CPU 210 includes an angular velocity sensor 26 for detecting a shake of the photographing optical system with respect to a subject.
1, 262, drive circuits 271 and 272 for driving the image blur correction unit 230, and an MR sensor (Magneto-Resistive senso) for detecting the positions of the image blur correction unit 230.
r) 428 and 438 are connected.

The angular velocity sensor 261 detects the angular velocity of the rotational movement of the camera in the vertical direction, and a voltage corresponding to the angular velocity in that direction due to camera shake is applied to the lens CPU 210.
Output to. The angular velocity sensor 262 is a sensor that detects the angular velocity of the rotational movement of the camera in the lateral direction, and outputs a voltage according to the detected angular velocity to the lens CPU 210.

The image blur correction means 230 constitutes a part of the photographing optical system, and comprises a correction optical system for deflecting the optical axis of the photographing optical system and a driving means for driving the correction optical system.
Under the control of the lens CPU 210, the driving unit drives the correction optical system so as to cancel the movement of the subject image formed by the photographing optical system on the film surface F, and the optical axis of the photographing optical system is perpendicular to the paper surface. Direction and the direction parallel to the paper,
Bias independently of each other. Further, a non-volatile memory (EEPROM) 280 is connected to the lens CPU 210, and data used for controlling the image blur correction unit 230 is stored therein.

FIG. 3 shows the structure of the image blur correction means 230. The correction lens 401 that constitutes the correction optical system is fixed to the first rotating plate 420 while being fitted in the lens frame 410, and the first rotating plate 420 is provided with the second rotating plate 430 via the rotating shaft 421. Is rotatably attached to. Further, the second rotating plate 430 is rotatably attached to the substrate 440 via a rotating shaft 431 that is provided to project 90 degrees away from the rotating shaft 421 about the optical axis O of the photographing optical system. Board 440
Are fixed in the interchangeable lens 200.

With the above arrangement, the correction lens 401 is
By rotating the first and second rotating plates 420 and 430, the optical axis O
In the plane perpendicular to the direction of arrow V in the figure (vertical direction), H
It is held so as to be displaceable in the direction indicated by the direction (lateral direction).

The lens frame 410 has a large diameter portion 411 and a small diameter portion 412, and the small diameter portion 412 is fitted into the opening 422 of the first rotating plate 420. The rotating shaft 4 of the first rotating plate 420
21 is inserted into a shaft hole 439 formed in the second rotating plate 430. An arm 424 having a screw hole 423 is provided on the opposite side of the rotating shaft 421 with the opening 422 interposed therebetween.

A screw member 426 connected to the rotation shaft of the motor 425 via a flexible joint is screwed into the screw hole 423. The motor 425 uses the second rotating plate 4
It is fixed on 30. When the motor 425 is driven, the first rotation plate 420 is driven to rotate about the rotation shaft 421 in the direction indicated by the arrow V according to the rotation direction of the screw member 426.

The permanent magnet 4 is attached to the tip of the drive arm 424.
27 is provided, and an MR sensor 428 that detects the position of the permanent magnet 427 is provided on the second rotating plate 430 so as to face the permanent magnet 427. Lens CPU2
10 is a lens 40 according to the output signal of the MR sensor 428.
The displacement of arrow 1 in the direction of arrow V is detected.

The rotation shaft 431 of the second rotation plate is provided on the substrate 440.
It is inserted into the shaft hole 449 formed in the. Second rotating plate 43
An opening 432 through which the small diameter portion 412 is inserted is formed at 0. The opening 432 has a size that does not hinder the movement of the small diameter portion 412 due to the rotation of the first rotating plate 420 when the first rotating plate 420 is assembled to the second rotating plate 430.

A drive arm 434 having a screw hole 433 is provided on the opposite side of the rotary shaft 431 with the opening 432. A screw member 436 connected to the rotation shaft of the motor 435 via a flexible joint is screwed into the screw hole 433. When the motor 435 is driven, the second rotating plate 430 is driven to rotate about the rotating shaft 431 in the direction indicated by the arrow H according to the rotating direction of the screw member 436.

The permanent magnet 4 is attached to the tip of the drive arm 434.
37 is provided, and the MR sensor 438 is arranged on the substrate 440. The lens CPU 210 detects the displacement of the lens 401 in the arrow H direction based on the output signal of the MR sensor 438.

The substrate 440 is provided with an opening 442 through which the small diameter portion 412 is inserted. The opening 442 has a size that does not hinder the movement of the small diameter portion 412 due to the rotation of the first and second rotating plates.

In FIG. 4, the image blur correction means 230 is viewed from the focusing optical system 220 side in a state where the lens frame 410, the first rotary plate 420, the second rotary plate 430, and the substrate 440 are combined. It is a figure. FIG. 4 shows a reference state in which the optical axis O of the correction lens 401 coincides with the optical axes of other optical systems that constitute the photographing optical system. In the reference state, the center of the rotation shaft 421 of the first rotation plate 420, the optical axis O, the permanent magnet 4
27 and the MR sensor 428 are arranged on the straight line a. Similarly, the center of the rotation shaft 431 of the second rotation plate 430, the optical axis O, the permanent magnet 437, and the MR sensor 438 are arranged on the straight line b.

As described above, the opening 432 of the second rotating plate 430 has a size that does not hinder the movement of the small diameter portion 412 due to the rotation of the first rotating plate 420, and the opening 44 of the substrate 440.
2 has a size that does not hinder the movement of the small diameter portion 412 due to the rotation of the first and second rotating plates 420 and 430. In other words, the drive range (correction range) for the image blur correction of the correction lens 401 is the outer peripheral surface of the small diameter portion 412 and the opening 43.
Image shake correction means 2 due to collision with the inner wall surface of 2,442
Considering the load and damage to each member of 30, the small diameter portion 41
2 and the openings 432 and 442 are set to be smaller by a predetermined amount than the limit range for driving the correction lens 401 mechanically defined. As shown in FIG. 4, when the correction lens 401 is in the reference state, its optical axis coincides with the center of the correction range described above.

FIG. 5 is a diagram showing in detail the part relating to image blur correction and the communication part between the interchangeable lens 200 and the camera body 100 in the block diagram of FIG. When the power slide lever (not shown) of the camera body 100 is operated while the interchangeable lens 200 is mounted on the camera body 100, and the main switch 141 of the camera CPU 110 is turned on, the contact pins 300C and 300L for power supply are used. The power is also supplied to the lens CPU 210. In the camera CPU 110, the ON / OFF information of the photometric switch 142 and the release switch 143 which are linked with the shutter button 101 is represented by 1-bit digital pulses, and the ports PI1 and PI2 of the camera CPU 110 are used.
Entered in.

The voltage outputs of the angular velocity sensors 261 and 262 are output from the A / D conversion ports AD1 and A of the lens CPU 210.
At D2, the voltage output from the MR sensors 428, 438 is
It is input to the A / D conversion ports AD3 and AD4, respectively. D / A output ports DA1 and D of the lens CPU 210
A motor 425 that drives the first rotary plate 420 and a motor 435 that drives the second rotary plate 430 are connected to A2 via motor drive circuits 271 and 272, respectively. The lens CPU 210 converts the amount of movement of the correction lens required to correct the image shake based on the above-mentioned input signal into the drive amount of the motor 425 and the motor 435 for calculation, and drives from the ports DA1 and DA2. The voltage corresponding to the quantity is output.

Next, the processing procedure by the camera CPU 110 of the camera body 100 will be described with reference to the flowcharts shown in FIGS. When a power slide lever (not shown) of the camera body 100 is operated and the main switch 141 is turned on, the process is started. In addition, in the processing shown in FIGS. 6 to 8, the power supply slide lever is operated and the main switch 14 is operated.
It is executed until 1 is turned off and the power supply is stopped. In step S1000, it is checked whether or not the shutter button has been half pressed and the photometric switch 142 is on. If it is confirmed that the photometric switch 142 is turned on, the process proceeds to step S1002.

In step S1002, the photometric sensor 15
The exposure value (Ev) is calculated based on the photometric processing by 0, and the aperture value (A
v) and the exposure time (Tv) are calculated. Step S1
In 004, the integration processing of the output voltage of the image sensor included in the AF sensor 191 is executed, and the voltage signal corresponding to the luminance distribution of the two object images re-imaged in the light receiving area of the image sensor is output.

Next, in step S1006, defocus calculation processing is executed. That is, the AF sensor 19
Based on the voltage signal output from the AF sensor 19, the AF sensor 19
The EE connected to the camera CPU 110 by calculating the distance between the image distances of the two object images re-formed on the first image sensor.
The defocus amount is calculated by comparing with the distance of the image interval at the time of focusing which is stored in the PROM 180 (see FIG. 2) in advance. In step S1008, step S1006
The reliability of the calculation result of is checked. If it is determined that the calculation result of the defocus amount calculation is reliable, the process proceeds to step S1010.

In step S1010, the calculated defocus amount is compared with a predetermined threshold value. If the defocus amount is larger than the threshold value, it is determined that the focusing operation is necessary, the process proceeds to step S1012, and the above-described focusing operation is executed based on the defocus amount. That is, the drive amount and drive direction of the focusing optical system 220 shown in FIG. 2 are calculated based on the calculated defocus amount.
The calculation result is output to the motor control circuit 192, subjected to signal processing such as amplification, and then output to the AF motor 193. The AF motor 193 is driven by the camera body 100.
It is transmitted to the gear block 250 on the interchangeable lens 200 side via the gear block 194 on the side. Gear block 250
Thereby, the focusing optical system 220 is moved along the optical axis in a predetermined direction and by a predetermined amount.

If it is determined in step S1008 that the defocus amount calculated in step S1006 is not reliable due to factors such as low contrast of the subject, the process proceeds to step S1014 in FIG. Step S10
In 14, under the control of the camera CPU 110, near-infrared light is emitted from the ILED 196 of the auxiliary light unit 195, and a striped light projection pattern is projected on the subject. Then, in step S1016, the flag D_END
Is set to "0" and initialized. Flag D_EN
D is the correction lens 4 in the interchangeable lens 200 described later.
This is a flag for indicating that the center drive processing of 01 is completed.

In step S1018, the AF sensor 19
The data regarding the defocus detectable direction by 1 is the lens CPU of the interchangeable lens 200 via the communication bus 301.
210 is transmitted. Next, in step S1020, data indicating that the light projection pattern is projected (auxiliary light projection ON) is transmitted to the lens CPU 210 of the interchangeable lens 200 via the communication bus 301.

In step S1022, the flag D_END is set.
The value of is checked. If "1" is not set in the flag D_END, the process proceeds to step S1024, the transmission data from the lens CPU 210 is checked, and if the transmission data indicates the end of the center drive processing of the correction lens 401, the flag D_END is set. "1" is set. When it is confirmed in step S1022 that the flag D_END has already been set to "1" and the center driving process of the correction lens 401 in the interchangeable lens 200 has been completed, the process proceeds to step S1026.

Then, in step S1026, step S
The integration processing similar to 1004 is executed. Step S1
The integration processing in 026 is reflected by the subject, and A
This is performed for the projection pattern that is re-imaged on the image sensor of the F sensor 191. When the integration process is completed, step S
In 1028, the emission of the near-infrared light from the ILED 196 is stopped, and in step S1030, data indicating that the projection of the projection pattern is not being performed (auxiliary projection off) is stored in the interchangeable lens 200 via the communication bus 301. It is transmitted to the lens CPU 210. As described above, the start and the end of the projection of the projection pattern are performed by the lens C of the interchangeable lens 200.
The PU CP 210 informs the camera CP of the camera body 100 while the light projection pattern is projected on the subject.
In U110, integration processing of the output of the image sensor of the AF sensor is executed.

Next, in step S1032, the defocus amount is calculated based on the calculation result of the integration processing in step S1026. In step S1034,
Similar to step S1008, the reliability of the defocus amount is checked. If it is determined that the calculation result of the defocus amount calculation is reliable, the process proceeds to step S1010 and the above process is executed. On the other hand, if it is determined that the defocus amount is not reliable, step S1036.
Then, the AF search drive is performed. In the AF search drive, the integration amount of the image sensor of the AF sensor 191 and the calculation of the defocus amount based on the integration result are executed while sequentially changing the amount of extension of the lens forming the focusing optical system 220. When the effective defocus amount is calculated, the lens drive of the focusing optical system 220 is executed based on the defocus amount.

When the lens driving of the focusing optical system 220 in steps S1012 and S1036 is completed, the process returns to step S1004. That is, the above process is repeated until it is confirmed in step S1010 that the defocus amount is equal to or less than the threshold value.

In step S1010, step S100
6 or when it is confirmed that the defocus amount calculated in S1032 is less than or equal to the threshold value, it is determined that the focusing optical system 220 is in the in-focus state, and step S in FIG.
Proceed to 1038. In step S1038, the state of the photometric switch 142 (see FIGS. 2 and 5) is confirmed again. When it is confirmed that the photometric switch 142 is off, the process returns to step S1000 in FIG. 6 and the subsequent processing is repeated.
When it is confirmed that the photometric switch 142 is on, the process proceeds to step S1040, and the release switch 143 (see FIG. 2,
The state (see 5) is confirmed. Shutter button 101
Is not fully pressed and it is confirmed that the release switch 143 is off, the process returns to step S1038, and the shutter button 101 is fully pressed and it is confirmed that the release switch 143 is on, then step S104.
Go to 2.

In step S1042, step S in FIG.
Aperture value (Av) calculated in 1002, exposure time (T
The following release operation is executed based on v). The quick return mirror 121 is flipped up to the position shown by the broken line in FIG. 2, and Av is set via the release control IF 160.
The aperture of the diaphragm mechanism 240 is adjusted based on the value, and the shutter mechanism 124 is driven in the opening direction. When the exposure time has elapsed, the shutter mechanism 124 is driven in the closing direction via the release control IF 160, and the diaphragm mechanism 24 is operated.
The aperture of 0 is opened and the quick return mirror 1
21 is returned to the reflection position, and the release operation ends.
When the release operation in step S1042 is completed, the film F winding process is executed in step S1044, and the process returns to step S1000.

FIG. 9 shows a lens CPU of the interchangeable lens 200.
5 is a flowchart showing a processing procedure of image blur correction control in 210. When power is supplied from the camera body 100 via the contact pins 300C and 300L, the lens CP
U210 is activated. In step S1100, "0" is set to the auxiliary light emitting flag described later to be initialized. Next, in step S1102, the camera CPU 110
The communication interrupt request from is permitted. As a result, the lens CPU 210 constantly monitors the port to which the communication bus 301 is connected, and when there is an interrupt request, the interrupt process is executed.

10 to 11 are flowcharts showing the interrupt processing procedure on the lens CPU 210 side when a communication interrupt request is issued from the camera CPU 110 via the communication bus 301. When the interrupt request is executed by the camera CPU 110, the transmitted communication data is captured by the lens CPU 210 in step S1200. Next, in step S1202, it is checked whether or not the transmitted communication data is data indicating that auxiliary light emission is on. If it is data indicating that auxiliary light emission is on, "1" is set in the auxiliary light emission flag in step S1204. To be done. In step S1206, it is checked whether or not the communication data is data indicating auxiliary light emission off. If the communication data is data indicating auxiliary light emission off, "0" is set to the auxiliary light emission flag in step S1208.

Then, in step S1210 of FIG.
It is checked whether the transmitted communication data is data indicating that the defocus detectable direction of the AF sensor 191 is horizontal. If the data indicates that the detection direction is horizontal, the process advances to step S1212 and the AF sensor 19
“0” is set to the sensor direction flag SENS indicating the defocus detectable direction of 1. Furthermore, step S
At 1214, the center drive flag END_X and the flag END_Y are initialized.

Flags END_X and END_Y are flags for checking that the correction lens 401 has been driven to the center position in the horizontal and vertical directions, respectively. The center position in the lateral direction of the correction lens 401 means that the optical axis O is located along the direction perpendicular to the lateral direction and on the plane including the optical axes of the other optical systems forming the above-described photographing optical system. The center position of the correction lens 401 in the vertical direction is the position along the direction perpendicular to the vertical direction and the optical axis of another optical system that constitutes the above-described photographing optical system. It is the position of the correction lens 401 in a state where the optical axis O is located on the plane including the same.

When the correction lens 401 is driven to the center position in each direction, "1" is set in the flags END_X and END_Y. END_X, E
When both the values of ND_Y become "1", it is determined that the center drive processing is completed, and "1" is set in D_END.
In step S1214, since the defocus detectable direction of the AF sensor 191 is the lateral direction, the correction lens 40
1 is a flag END to drive the center only in the lateral direction.
“_X” is set to “0” and the flag END_Y is set to “1”.

In step S1216, it is checked whether the transmitted communication data is data indicating that the defocus detectable direction of the AF sensor 191 is the vertical direction. If the data indicates that the detection direction is the vertical direction, the process advances to step S1218, and “1” is set to the variable SENS of the AF sensor 191. Further, in step S1220, flag END_X and flag E are set.
Initialization of ND_Y is performed. In step S1220, since the defocus detectable direction of the AF sensor 191 is the vertical direction, "1" is set in the flag END_X and "0" is set in the flag END_Y in order to drive the correction lens 401 only in the vertical direction. .

In step S1222, it is checked whether or not the transmitted communication data is data indicating that the defocus detectable direction of the AF sensor 191 is both vertical and horizontal directions. In the case of data indicating that the detectable direction is both the vertical and horizontal directions, the process proceeds to step S1224, and the variable S
“2” is set in ENS. Further, step S1
At 226, flag END_X and flag END
Initialization of _Y is performed. In step S1226,
Since the defocus detectable direction of the AF sensor 191 is both the vertical and horizontal directions, the correction lens 401 is flagged END_X in order to drive the center in both the vertical and horizontal directions.
Also, "0" is set to both the flag END_Y.

Next, in step S1228, it is checked whether the communication data transmitted from the camera CPU 110 is a confirmation request for completion of center driving of the correction lens 401. When the camera CPU 110 transmits a confirmation request for ending the center driving of the correction lens 401, step S1
At 230, it is checked if both flags END_X and END_Y are set to "1". If the value of both flags is "1", the center drive processing of the correction lens 401 in the interchangeable lens 200 has been completed, so the flow advances to step S1232, and "1" is set in D_END. If any one of the states of the flags END_X and END_Y is "0", step S1
Proceeding to step 234, “0” is set in D_END.

When a value is set in D_END in step S1232 or S1234, step S
1236, the D_END information is the camera CPU 11
Sent to 0.

As described above, when there is an interrupt request from the camera CPU 110, the lens CPU 210 checks the transmitted communication data and sets the values for the auxiliary light emission flag, the sensor direction flag, and the center drive flag in accordance with the contents. To be done.

Returning to FIG. 9 again, step S1104
Then, the value of the auxiliary light emission flag is checked. As described above, the case where “1” is set in the auxiliary light projecting flag indicates that the light projecting pattern is projected on the subject by the camera CPU 110 via the auxiliary light unit 195. Further, when the auxiliary light emitting flag is set to "0", the auxiliary light unit 195 is not operating in the camera CPU 110, or the projection of the light emitting pattern is finished even if the auxiliary light unit 195 is operating. That is the case. If "0" is set in the auxiliary light emission flag, the flow advances to step S1106 to execute the blur detection process.

The blur detection in step S1106 is performed as follows. The angular velocity signal in the V direction (vertical direction) output from the angular velocity sensor 261 is the lens CPU 2
It is input to the AD conversion port AD1 of 10 and A / D converted. The digital signal that has been A / D converted is the lens CPU 21.
The integration processing is performed by 0, and the angle signal in the V direction is calculated. The drive direction and the drive amount of the first rotating plate 420 along the V direction are calculated based on the V direction angle signal. Similarly, the angular velocity signal in the H direction (horizontal direction) output from the angular velocity sensor 262 is input to the AD conversion port AD2 of the lens CPU 210 and A / D converted. The lens CPU 210 integrates the A / D-converted digital signal to calculate an angle signal in the H direction. Based on the angle signal in the H direction, the drive direction and the drive amount of the second rotating plate 430 along the H direction are calculated.

Next, in step S1108, a correction lens driving process is performed. The analog signal of the MR sensor 428 indicating the current position of the first rotating plate 420 in the V direction is A /
It is read from the D conversion port AD3, and a digital value indicating the current position in the V direction is calculated. Similarly, an analog signal of the MR sensor 438 indicating the current position of the second rotating plate 430 in the H direction is read from the A / D conversion port AD4,
A digital value indicating the current position in the H direction is calculated.

The motor 42 is driven based on the drive direction and drive amount of the first rotary plate 420 along the V direction and the digital value indicating the current position of the first rotary plate 420 in the V direction.
The driving amount of 5 is calculated. Similarly, the second rotating plate 430
The drive amount of the motor 435 is calculated based on the drive direction and drive amount along the H direction and the digital value indicating the current position of the second rotating plate 430 in the H direction.

The drive amount of the motor 425 is converted into an analog signal by the D / A conversion port DA1 and the motor drive circuit 2
71 is output. The analog signal output from the D / A conversion port DA1 is amplified by the motor drive circuit 271 and then output to the motor 425. The motor 425 swings the first rotating plate 420 based on the input analog signal. As a result, the correction lens 401 is driven so as to cancel the vertical component of image blur caused by camera shake.

The driving amount of the motor 435 is converted into an analog signal by the D / A conversion port DA2, and the motor driving circuit 2
It is output to 72. The analog signal output from the D / A conversion port DA2 is amplified by the motor drive circuit 272 and then output to the motor 435. The motor 435 swings the second rotating plate 430 based on the input analog signal. As a result, the correction lens 401 is driven so as to cancel the horizontal component of image blur caused by camera shake.

On the other hand, when it is confirmed in step S1104 that the auxiliary light emission flag is set to "1", the process proceeds to step S1110 and the above-mentioned step S1 is performed.
The same blur detection processing as 1106 is executed. Then
Flags SEN in steps S1112 to S1116
The value of S is checked.

When the flag SENS is set to "0", the defocus detectable direction of the AF sensor 191 is the lateral direction as described above. Therefore, step S
At 1118, the correction lens 401 is driven in the vertical direction,
That is, it is executed only in the V direction. Next, at step 1120, a lateral center driving routine for the correction lens 401 is executed.

FIG. 12 is a flowchart showing the processing procedure of the lateral center drive routine. Step S1300
Then, it is checked whether the flag END_X is set to "1". When the flag END_X is set to “1”, the correction lens 401 has already been driven to the center position in the horizontal direction, and the drive control in the horizontal direction has been stopped, so no processing is performed.

If "1" is not set in the flag END_X, the flow advances to step S1302, and the correction lens 4
It is checked whether 01 is driven to the center position in the lateral direction. In the lateral center driving routine, whether the correction lens 401 is located at the central position in the lateral direction, M
It is checked based on the output signal of the R sensor 438.
If the correction lens 401 is not located at the center position in the lateral direction, processing to drive to the center position is performed. If it is confirmed in step S1302 that the correction lens 401 is located at the center position in the lateral direction, step S1306
Then, the output of the D / A conversion port DA2 is set to "0" under the control of the lens CPU 210, the lateral driving of the correction lens 401 is stopped, and the flag END_X is set to "1" in S1308. .

When the flag SENS is set to "1", the defocus detectable direction of the AF sensor 191 is the vertical direction as described above. Therefore, in step S1122 in FIG. 9, the correction lens 401 is driven only in the horizontal direction, that is, in the H direction. Next, in step 1124, a vertical center drive routine for the correction lens 401 is executed.

FIG. 13 is a flowchart showing the processing procedure of the vertical center drive routine. The vertical center drive routine is executed in the same procedure as the horizontal center drive routine, and if it is confirmed in step S1400 that the flag END_Y is set to "1", the correction lens 40
No. 1 is already driven to the center position in the vertical direction, and the drive control in the vertical direction is stopped, so that the process is not performed.

If "1" is not set in the flag END_Y, the flow advances to step S1402, and the MR sensor 4
Based on the output signal of 28, it is checked whether the correction lens 401 is driven to the central position in the vertical direction.
If the correction lens 401 is not located at the center position in the vertical direction, the process of driving to the center position is performed. If it is confirmed in step S1402 that the correction lens 401 is located at the center position in the vertical direction, step S1406.
And the output of the D / A conversion port DA1 is set to "0" under the control of the lens CPU 210, and the correction lens 40
The driving of 1 in the vertical direction is stopped, and "1" is set to the flag END_Y in S1408.

When the flag SENS is set to "2", the defocus detectable direction of the AF sensor 191 is both the vertical and horizontal directions as described above. Therefore, in step S1126, the horizontal center drive routine similar to step S1120 is executed, and in step S1128 the vertical center drive routine similar to step S1124 is executed. As a result, the correction lens 401 is positioned at the center position in the vertical and horizontal directions, and the D / A conversion port DA1 is controlled by the lens CPU 210.
And the output of DA2 is set to "0", and the correction lens 4
The driving of 01 in the vertical and horizontal directions is stopped. That is, the correction lens 401 is stopped at the reference position where the optical axis O coincides with the optical axes of the other optical systems forming the photographing optical system.

As described above, in the first embodiment, on the camera body 100 side, auxiliary projection on / off data is transmitted to the interchangeable lens 200 according to the start and end of the operation of the auxiliary light unit 195. Also, data regarding the defocus detectable direction of the AF sensor 191 is transmitted. On the side of the interchangeable lens 200, while receiving the data for turning on the auxiliary light and detecting that the auxiliary light is being projected on the side of the camera body 100, the correction lens is adjusted according to the defocus detectable direction of the AF sensor 191. Driving and stopping to the center position of 401 are performed. Therefore, even if the auxiliary light unit is activated during the image blur correction control in a state where the camera shake is severe, the optical image of the projected light pattern formed in the defocus detectable direction of the AF sensor 191 is the imaging element of the AF sensor 191. The phenomenon of being out of the light receiving area of is prevented. As a result, AF using the light projection pattern
The processing is always stable.

Further, in the first embodiment, the image blur correction control in the direction coincident with the defocus detectable direction of the AF sensor 191 is stopped, while the image blur correction control in the intersecting direction is executed. As described above, the direction in which the stripes of the light projection pattern extend is the direction intersecting the defocus detectable direction of the AF sensor 191. That is, the direction in which the correction lens 401 is driven by the image blur correction control executed on the interchangeable lens 200 side during the auxiliary light projection on the camera body 100 side is the direction in which the stripes of the light projection pattern extend, and therefore the light projection pattern is formed. It does not affect the defocus calculation using. Therefore, an effective defocus amount is calculated in the defocus calculation using the light projection pattern while minimizing the discomfort of the subject image visually recognized from the viewfinder. In other words, it is possible to avoid a sense of discomfort in the finder image without lowering the ranging accuracy.

FIG. 14 is a so-called compact camera 5 to which the second embodiment according to the present invention is applied, in which the camera body and the photographing lens unit are integrated so that the lenses cannot be replaced.
It is a block diagram of 00. The camera 500 includes a shutter button 501, a focusing optical system 502, an image blur correction unit 230 similar to that of the first embodiment, a quick return mirror 503, a sub mirror 504, and a pentaprism 50.
5, an AF sensor 506, a film F on which a subject image is formed, and a CPU 510 for controlling the entire camera 500. The photographing optical system of the camera 500 includes a focusing optical system 502 and a correction lens 40 of the image blur correction unit 230.
1 and a variable power optical system (not shown). The subject light enters the quick return mirror 503 after passing through the focusing optical system 502 and the correction lens 401. The subject light reflected by the quick return mirror 503 is guided to the photographer's eye by the pentaprism 505, and the subject light transmitted through the quick return mirror 503 is reflected by the sub mirror 504 and guided to the AF sensor 506.

The shutter button 501 is the same as the shutter button 101 of the camera body 100 of the first embodiment.
It is a step switch, and when it is pushed in one step, the photometric switch is turned on, and when pushed in two steps, the release switch is turned on. The ON / OFF information of these switches is input to the CPU 510.

The camera 500 is provided with angular velocity sensors 261 and 262 similar to those of the first embodiment for detecting the shake of the photographing optical system with respect to the subject, and detects the movement of the lens in the photographing optical system in the optical axis direction. Lens movement detection means 5
07 is provided.

Similar to the first embodiment, the angular velocity sensor 261
From 262 and 262, the voltage corresponding to the detected angular velocity is the CPU
It is output to 510. Further, the image blur correction unit 230 is
Similar to the first embodiment, the correction lens 401 is arranged in the camera 500 so as to form a part of the photographing optical system.

The CPU 510 uses the angular velocity sensors 261, 2
Based on the input signal from 62, the image blur correction means 230
Is driven to correct the image blur on the film surface F and in the finder field.

Although the focusing optical system 502 is shown as a single lens in FIG. 14, it is actually composed of a plurality of lenses or a plurality of lens groups, and part or all of it is used for focusing. Are movable in the optical axis direction. In the second embodiment, the lens movement detection means 5
Reference numeral 07 detects the movement of the lens forming the focusing optical system 502.

At the time of observing the subject, the quick return mirror 503 is positioned at the position shown in FIG. Therefore, the focusing optical system 502 and the correction lens 4 of the image blur correction unit 230, which form a part of the photographing optical system, respectively.
The light flux of the subject incident via 01 is reflected by the quick return mirror 503 and guided to the focusing screen B. The image of the subject on the focusing screen B is inverted by the pentaprism 505, and the observer can observe the image on the focusing screen B as an erect image via the eyepiece lens 508. That is, in the second embodiment, the finder optical system includes the focusing optical system 502, the correction lens 401, the quick return mirror 503, the focusing screen B, and the pentaprism 5.
05, eyepiece lens 508.

The quick return mirror 503 and the sub mirror 504 are mirror drive mechanisms (not shown) at the time of photographing.
As a result, it is retracted to a position facing the focusing screen B. As a result, at the time of shooting, the light flux of the subject is focused by the focusing optical system 5.
02, is guided to the film surface F through the correction lens 401, and a subject image is formed on the film surface F. In this way, the subject image is exposed on the film surface F and the subject image is recorded.

The focusing lens is configured to move in the optical axis direction by a known cam mechanism (not shown) by rotating the lens barrel 509. The lens barrel 509 is rotated by a motor provided in the body of the camera 500 or a lens unit, or by a manual operation of the focusing operation ring 511 by the photographer himself.

The AF sensor 506, like the AF sensor 191 of the camera body 100 of the first embodiment, is a sensor for detecting the defocus amount of the photographing optical system by the phase difference detection method.

The lens movement detecting means 507 is a lens barrel 509.
The pinion gear 512 meshes with the rack 509a provided on the outer periphery of the pinion gear, the slit plate 513 provided coaxially with the pinion gear 512, and the photo interrupter 514 sandwiching the slit plate 513. The slit plate 513 is provided with a large number of slits radially around the rotation axis. The photo interrupter 514 is composed of a light emitting unit 513a and a light receiving unit 513b that are opposed to each other with the slit plate 513 sandwiched therebetween. From the light receiving unit 513b, a periodic signal corresponding to the light and darkness of light is generated as the slit plate 513 rotates. Is output. As described above, the lens barrel 509 is used for the camera 5 in the case of autofocus.
00 is rotated by a motor provided in the body of 00 or a lens unit, and in the case of manual focus, the photographer himself manually rotates. Therefore, the slit plate 5 interlocked with the rotation of the lens barrel 509 by focusing.
A pulse signal is output from the light receiving unit 513b in accordance with the rotation of the light source 13.

The CPU 510 has the same structure as in the first embodiment.
An auxiliary light unit 195 including an ILED 196, a contrast pattern 197, and a projection optical system 198 is connected. If the brightness contrast of the subject is low, the AF
When the effective defocus amount cannot be obtained by the calculation by the sensor 506, the auxiliary light unit 195 is driven by the control of the CPU 510.

In the second embodiment, the AF sensor 5
06 is configured such that the defocus detectable direction is the horizontal direction, and the extending direction of the stripes of the stripe-shaped contrast pattern 197 is the vertical direction.

FIG. 15 is a block diagram illustrating input / output signals of CPU 510. The photometric switch 521 linked to the shutter button 501, ON / OFF information of the release switch 522, the voltage output of the angular velocity sensors 261 and 262, and the voltage output from the MR sensors 428 and 438 are input to the corresponding respective ports. The description is omitted because it is similar to that of the first embodiment. In addition, the motor 425
Outputs from the corresponding ports to the motor drive circuit 271 connected to the motor drive circuit 272 and the motor drive circuit 272 connected to the motor 435 are the same as those in the first embodiment, and thus the description thereof will be omitted.

The output signal of the photo interrupter 514 is
The AF sensor 50 is connected to the port PI3 that detects a pulse input.
The voltage output from 6 is input to each port PI4. Further, the IL of the auxiliary light unit 195 is connected to the port PO.
The ED 196 is connected, and an output signal for causing the ILED 196 to emit near infrared light is output from the port PO.

16 to 20, C of the camera 500 is used.
The processing procedure by the PU 510 will be described. When power is supplied to the camera 500, the processing is started, and step S150
At 0, the state of the photometric switch 521 is checked. If the shutter button 501 is half pressed and the photometric switch 521 is on, the process proceeds to step S1502.

In step S1502, a timer for starting interrupt processing every 1 ms (millisecond) is started. As a result, while the subsequent processing is being executed,
An image blur correction control subroutine, which will be described later, is repeatedly activated every 1 ms.

Next, in step S1504, photometric processing is executed. That is, the exposure value (Ev) is calculated based on the photometric processing by the photometric sensor (not shown), and the aperture value (Av) and the exposure time (Tv) required for photographing are calculated based on the exposure value.

In steps S1506 to S1514,
The same processing as the processing by the camera CPU 110 of the first embodiment shown in FIG. 6 is executed. In step S1506, the integration processing of the output voltage of the image sensor included in the AF sensor 506 is executed, and the voltage signal corresponding to the brightness information of the two object images re-imaged in the light receiving area of the image sensor is output. . Next, in step S1508, the distance between the image distances of the two object images re-formed on the image sensor of the AF sensor 191 is calculated based on the voltage signal output from the AF sensor 506, and the EEPROM (not shown) of the CPU 510. The defocus amount is calculated by comparing the distance between the image distances at the time of focusing, which is stored in (1). In step S1510, the reliability of the calculation result of step S1508 is checked. If it is determined that the calculation result of the defocus amount calculation is reliable, the process proceeds to step S1512.
In step S1512, the defocus amount is compared with a predetermined threshold value, and if it is larger than the threshold value, step S1514.
The lens barrel 509 based on the defocus amount.
(See FIG. 14) is driven.

If it is determined in step S1510 that the calculation result of the defocus amount calculation is not reliable, FIG.
Go to step S1516. In step S1516, a voltage is output from the port PO (see FIG. 15) to the ILED 196, and the ILED 196 emits near infrared light. As a result, a stripe-shaped projection pattern is projected onto the subject through the contrast pattern 197 and the projection optical system 198.

Next, at step S1518, "0" is set to the flag D_END similar to that of the first embodiment,
It is initialized. Then, in step S1520,
The value of D_END is checked. "1" in D_END
Is confirmed to be set, that is, until the driving process to the center position of the correction lens 401 is completed, the process of step S1520 is repeatedly executed. During this period, as described above, the timer is started in step S1502 of FIG. 16, so that the image blur correction control subroutine is repeatedly executed every 1 ms.

FIG. 19 is a flowchart showing the processing procedure of the image blur correction control subroutine. Step S1
At 600, the status of the port PO (see FIG. 15) is confirmed. No voltage output from port PO, ILED196
When it is confirmed that the near-infrared light is not emitted, that is, the projection pattern is not projected on the subject, the process proceeds to step S1602, the blur detection calculation is executed in both the vertical and horizontal directions, and then step S1604. The correction lens 401 is driven in both the vertical and horizontal directions. Note that the processing in steps S1602 and S1604 is the same as steps S1106 and S1108 in FIG. 9, so description thereof will be omitted.

When it is confirmed in step S1600 that the voltage is output from the port PO and the near-infrared light is emitted from the ILED 196, that is, the projection pattern is projected on the subject, the process proceeds to step S1606. move on.
As described above, in the second embodiment, the defocus detectable direction of the AF sensor 506 is the horizontal direction, and the extending direction of the stripes of the light projection pattern is the vertical direction. Therefore, in step S1606, shake detection calculation is executed in the vertical direction, and based on the result, step S16 is performed.
At 08, driving of the correction lens 401 in the vertical direction is executed. Next, the process proceeds to step S1610, and it is checked whether or not the driving process to the lateral center position of the correction lens 401 is completed. When the drive processing to the lateral center position of the correction lens 401 is not completed, the process proceeds to step S1612 and the drive processing is executed.

On the other hand, if it is confirmed in step S1610 that the driving process of the correction lens 401 to the lateral center position is completed, the process advances to step S1614, and the driving of the correction lens 401 in the lateral direction is stopped. Driving of the correction lens 401 in the lateral direction is stopped by setting the output of the D / A conversion port DA2 of the CPU 510 to "0", as in the first embodiment. Next, in step S1616, the flag D_END is set to "1" indicating that the center drive processing is completed.

When it is confirmed in step S1520 of FIG. 17 that "1" has been set in D_END as a result of the above subroutine being repeatedly executed every 1 ms, the flow proceeds to step S1522. In step S1522, integration processing is performed on the two images of the projection pattern reflected from the subject and re-formed on the image sensor of the AF sensor 191. When the integration process ends, the voltage output from the port PO to the ILED 196 is stopped in step S1524, and the projection of the light projection pattern ends.

In step S1526, step S15
Step S1508 based on the result of the integration process of 22.
The defocus amount is calculated in the same manner as. Next, in step S1528, the reliability of the defocus amount is checked. If it is determined that the defocus amount calculation result is reliable, the process proceeds to step S1512 in FIG. 16, and if it is determined that the defocus amount calculation result is not reliable, the process proceeds to step S1530. In step S1530, AF search drive similar to step S1036 in FIG. 7 is performed, and step S150 in FIG.
Return to 6.

In step S1512, step S150
8 or if it is confirmed that the defocus amount calculated in S1526 is less than or equal to the threshold value, step S15 in FIG.
Proceed to 32. In step S1532, the photometric switch 5
The state of 21 (see FIG. 15) is confirmed again. If it is confirmed that the photometric switch 521 is off, step S15.
Proceed to 34. In step S1534, the timer set in step S1502 of FIG. 16 is stopped, the process returns to step S1500 of FIG. 16, and the subsequent processing is repeated. That is, while the photometric switch 521 is off, the image blur correction control subroutine is not executed.

In step S1532, the photometric switch 521
If it is confirmed that is ON, the process proceeds to step S1536, and the state of the release switch 522 (see FIG. 15) is confirmed. If it is confirmed that the shutter button 501 has not been fully pressed and the release switch 522 is off, the process returns to step S1532, and the shutter button 501 is pressed.
When is fully pressed and it is confirmed that the release switch 522 is on, the process proceeds to step S1538.

In step S1538, a release operation similar to the release operation (step S1042 in FIG. 8) in the first embodiment is executed. The quick return mirror 503 is flipped up, the aperture of the aperture mechanism is adjusted based on the aperture value (Av) calculated in step S1504 of FIG. 16, and the shutter mechanism is driven in the opening direction.
When the exposure time (Tv) calculated in step S1504 has elapsed, the shutter mechanism is driven in the closing direction and the aperture is opened, the quick return mirror 503 is returned to the reflection position shown in FIG. 14, and the release operation is completed. To do. When the release operation in step S1538 ends, the film F winding process is executed in step S1540, and the process returns to step S1500 in FIG.

When the AF sensor 506 is constructed so that the defocus detectable direction is the vertical direction, the image blur correction control subroutine executed every 1 ms after the timer is set is the horizontal direction. Correction lens drive processing is performed (corresponding to step S1608 in FIG. 19),
The center driving process of the correction lens 401 in the vertical direction and the stop at the center position (steps S1610 to S161)
6) is performed.

When the AF sensor 506 is configured so that the defocus detectable direction is the horizontal and vertical directions, the image blur correction control subroutine shown in FIG. 20 is executed every 1 ms after the timer is set. It The processing of steps S1700 to S1704 is the same as the processing of steps S1600 to S1604 in FIG. If it is confirmed in step S1700 that the light projection pattern is projected onto the subject, the flow advances to step S1706 to check whether the center driving of the correction lens 401 in the lateral direction is completed. If the center driving of the correction lens 401 in the lateral direction has not been completed, step S1
In step 708, processing for driving the correction lens 401 to the center position in the horizontal direction is executed.

If the lateral center driving of the correction lens 401 has been completed, the process advances to step S1710, and the lateral driving of the correction lens 401 is stopped. Next, in step S1712, it is checked whether center driving of the correction lens 401 in the vertical direction has been completed.
When the center drive of the correction lens 401 in the vertical direction is not completed, the process proceeds to step S1714 and the correction lens 4
The process of driving 01 to the vertical center position is executed.

When the center drive of the correction lens 401 in the vertical direction is completed, the process advances to step S1716, and the drive of the correction lens 401 in the vertical direction is stopped. As the control proceeds to step S1716, the correction lens 401 is stopped at the center position in both the horizontal direction and the vertical direction. That is, the correction lens 401 is positioned at the reference position. Then, proceed to step S1718,
The flag D_END is set to "1" indicating that the driving of the correction lens is stopped.

As described above, when the AF sensor 506 is configured so that the defocus detectable direction is in both the vertical and horizontal directions, the image blur correction process is not performed, and the process of driving the correction lens to the reference position and stopping it is performed. Be seen.

As described above, the second embodiment is an example in which the image blur correction control when the auxiliary light projection is performed is applied to the compact camera in which the taking lens cannot be replaced.
During the photometry process and the release operation, the image blur correction is performed every 1 ms. However, when the light projection pattern is projected onto the subject through the auxiliary light unit 195, the AF sensor 5
Depending on the defocus detectable direction of 06, the driving process or the stop of the correction lens 401 is executed. As a result, the same effects as those of the above-described first embodiment can be obtained also in the compact camera.

Next, a third embodiment according to the present invention will be described with reference to FIGS. The third embodiment is applied to the same compact camera 500 as the second embodiment, and the variables and flags used in the following description are the same as those in the first and second embodiments. When power is supplied to the camera 500, the process is started, the state of the photometric switch 521 is checked in step S2500, and if the photometric switch 521 is on, step S2500 is performed.
Proceed to 2502.

In step S2502, the flag D_EN is set.
"0" is set in D and initialized. Next, in step S2504, a timer for activating the interrupt process every 1 ms is started. As a result, a subroutine of image blur correction control, which will be described later, is repeatedly activated every 1 ms while the subsequent processing is being executed. Then, the process proceeds to step S2506. Steps S2506 to S25
The processing up to 16 includes steps S1504 to S1 in FIG.
Since it is the same as the processing up to 514, the description is omitted.

If it is determined in step S2512 in FIG. 21 that the calculation result of the defocus amount calculation is not reliable, the process advances to step S2518 in FIG. Step S2
At 518, the flag D_END is set to “1”. Next, in Step S2520, the flag D_
The value of END is checked. The process of step S2518 is repeatedly executed until it is confirmed that “2” is set in the flag D_END. During this period, the image blur correction control subroutine described below is repeatedly executed every 1 ms.

FIG. 23 is a flow chart of a subroutine of image blur correction control which is repeatedly executed every 1 ms after the timer is started in the third embodiment. In step S2700, the value of flag D_END is checked. If "0" is set in the flag D_END, the process advances to step S2702. Step S2702,
The subsequent process of step S2704 is the same as the process of steps S1702 and S1704 of FIG. 20, which is a driving process of the correction lens 401 for image blur correction. That is, in step S2500 of FIG. 21, the photometric switch 521
After it is confirmed that is turned on, step S25
The normal image blur correction control is executed until it is determined in 12 that the calculation result of the defocus amount calculation is not reliable.

If it is confirmed in step S2700 that the value of the flag D_END is not "0", step S2700
Proceeding to 2706, it is checked whether the value of the flag D_END is "1". If the value of the flag D_END is "1", the process advances to step S2708. Step S2708-
The process of S2718 is the same as steps S1706 to S1706 of FIG.
This is the same as the processing up to 1716. That is, the driving of the correction lens 401 to the center position and the stop processing at the center position are executed in each of the horizontal direction and the vertical direction. When the correction lens 401 is driven to the center position in both the horizontal direction and the vertical direction and stopped, that is, when the correction lens 401 is positioned at the reference position,
"2" is set to the flag D_END (S272
0).

Returning again to FIG. 22, step S2520
When the flag D_END is set to “2” and it is confirmed that the correction lens 401 is positioned at the reference position, the process proceeds to step S2522. In step S2522, the port PO (see FIG. 15) to I
A voltage is output to the LED 196, near-infrared light is emitted from the ILED 196, and a stripe-shaped light projection pattern is projected onto the subject through the contrast pattern 197 and the projection optical system 198 (see FIG. 14).

Next executed steps S2524, S
The processing of 2526 is performed by steps S1522 and S1 of FIG.
This is similar to the processing of 524. That is, the AF sensor 19
The integration process is performed on the two images of the light projection pattern re-formed on the first image pickup device (S2524), and when the integration process is completed, the voltage output from the port PO to the ILED 196 is stopped, and the light projection pattern The projection is ended (S25
26).

Next, in step S2528, "0" is set in the flag D_END. This allows
In the above-described image blur correction control subroutine that is repeatedly executed every 1 ms shown in FIG. 23, normal image blur correction control (steps S2702 and S2704) is executed.

The processing of steps S2530 to S2534 is the same as step S152 of FIG. 17 in the second embodiment.
It is the same as the processing from 6 to S1530. That is, if it is determined that the calculation result of the defocus amount is reliable, the process proceeds to step S2514 in FIG. 21, and if it is determined that the defocus amount is not reliable, the AF search drive is performed in step S2534, and the process returns to step S2508 in FIG. .

Note that in step S2512 of FIG. 21, it is determined that the calculation result of the defocus amount calculation is reliable, the process proceeds to step S2514, and step S251.
In step 4, if it is confirmed that the defocus amount calculated in step S2510 or S2530 is less than or equal to the threshold value, step S153 in FIG. 18 is performed, as in the second embodiment.
Go to 2. The subsequent processing is as described above.

As described above, in the third embodiment, A
When it is determined that the calculation result of the defocus amount of the subject image by the F sensor 506 is not reliable, first, the correction lens 401 is driven to the reference position and stopped, and then the projection pattern is projected. The correction lens 401 is stopped at the reference position while the light projection pattern is projected, and normal image blur correction is performed while the light projection pattern is not projected (during light measurement processing, after completion of projection of the light projection pattern, etc.). The control is executed and the correction lens 401 is driven.

In the third embodiment, the correction lens 401 may be controlled to be positioned at the center position only in the same direction as the defocus detectable direction by the AF sensor 506 before projecting the light projection pattern.

In the first and second embodiments, the driving of the ILED 196 for projecting the projection pattern is started before the correction lens 401 is driven to the central position in at least one of the vertical direction and the horizontal direction. The projection pattern is projected during this driving process. That is, the AF sensor 191 (506) corresponding to the optical image of the projection pattern.
When the integration processing of the output signal of ILED1 is started,
The emitted light of 96 is stable. Therefore, the calculation result of the integration process for the output signal of the AF sensor 191 (506) becomes highly reliable. On the other hand, in the third embodiment, the ILED 196 is driven after the correction lens 401 is stopped at the central position in at least one of the vertical direction and the horizontal direction, and the light projection pattern is projected, so that the ILED 196 is turned on. Time can be shortened and power consumption can be suppressed.

[0134]

As described above, according to the present invention, in a camera having an image blur correction function, the most effective image blur correction is performed within a range that does not reduce the accuracy of autofocusing.

[Brief description of drawings]

FIG. 1 is a front view of a single-lens reflex camera to which a first embodiment according to the present invention is applied.

FIG. 2 is a block diagram of the single-lens reflex camera of the first embodiment.

FIG. 3 is an exploded perspective view of image blur correction means provided in the single-lens reflex camera of the first embodiment.

FIG. 4 is a front view showing the image blur correction unit of FIG. 3 from the focusing optical system side.

FIG. 5 is a diagram showing in detail the part relating to image blur correction and the communication part between the interchangeable lens and the camera body in the block diagram of FIG.

FIG. 6 is a flowchart showing a processing procedure until focusing of a photographing optical system in the camera body of the first embodiment.

FIG. 7 is a flowchart showing a processing procedure when performing auxiliary light projection in the camera body of the first embodiment.

FIG. 8 is a flowchart showing a processing procedure from the focusing of the photographing optical system to the film winding in the camera body of the first embodiment.

FIG. 9 is a flowchart showing a processing procedure of image blur correction control in the interchangeable lens of the first embodiment.

FIG. 10 is a flowchart showing the first half of the processing procedure in the case where there is an interrupt request from the camera body in the interchangeable lens.

FIG. 11 is a flowchart showing the latter half of the processing procedure when an interrupt request is issued from the camera body in the interchangeable lens.

FIG. 12 is a flowchart showing a processing procedure of a center driving routine in the lateral direction of the correction lens.

FIG. 13 is a flowchart showing a processing procedure of a center drive routine in the vertical direction of the correction lens.

FIG. 14 is a block diagram of a compact camera to which a second embodiment according to the present invention is applied.

FIG. 15 is a block diagram showing an input / output portion to a CPU of the compact camera of the second embodiment.

FIG. 16 is a flowchart showing a processing procedure until focusing of an image pickup optical system in the compact camera of the second embodiment.

FIG. 17 shows a compact camera according to the second embodiment,
It is a flow chart which shows a processing procedure when performing auxiliary light projection.

FIG. 18 is a diagram showing the compact camera of the second embodiment,
It is a flow chart which shows a processing procedure to a film winding after focusing of a photography optical system.

FIG. 19 shows a compact camera according to the second embodiment,
6 is a flowchart showing a processing procedure of a subroutine started every 1 ms when the defocus detectable direction by the AF sensor is configured to be a lateral direction.

FIG. 20 shows a compact camera according to the second embodiment,
6 is a flowchart showing a processing procedure of a subroutine activated every 1 ms when the defocus detectable direction by the AF sensor is configured to be both vertical and horizontal directions.

FIG. 21 is a flowchart showing a processing procedure until focusing of the photographing optical system in the third embodiment according to the invention of the present application.

FIG. 22 is a flowchart showing a processing procedure when performing auxiliary light projection in the third embodiment.

FIG. 23 is a flowchart showing a processing procedure of a subroutine activated every 1 ms when the defocus detectable direction by the AF sensor is configured to be both vertical and horizontal directions in the third embodiment.

[Explanation of symbols]

100 camera body 110 camera CPU 121 quick return mirror 141 main switch 142 Metering switch 143 Release switch 150 photometric sensor 195 Auxiliary light unit 196 ILED 197 Contrast pattern 198 Projection optical system 200 interchangeable lens 210 lens CPU 220 Focusing optical system 230 Image blur correction means 240 aperture mechanism 261, 262 Angular velocity sensor 271, 272 Motor drive circuit 301 communication bus 401 correction lens 420 First rotating plate 430 Second rotating plate 428,438 MR sensor 500 compact camera

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) G03B 17/14 G02B 7/11 N

Claims (10)

[Claims] 1. A photographing optical system including a plurality of optical systems, auxiliary light projection means for projecting auxiliary light having a predetermined light projection pattern toward an object, and an imaging medium formed on the imaging medium via the photographing optical system. Defocus amount detecting means for detecting the defocus amount of the optical image of the subject by a phase difference detection method, and focusing for driving the photographing optical system so that the optical image is focused based on the defocus amount. A camera including means for detecting blurring of an optical axis of the photographing optical system, a correction optical system for image blur correction included in the photographing optical system, and a correction optical system perpendicular to the optical axis of the correction optical system. Drive means for driving the correction optical system in two axial directions orthogonal to each other in a flat plane, and the blur detection means for canceling the blur of the optical image caused by the blur of the optical axis of the photographing optical system. To An image blur correction device comprising: a drive control unit that controls the drive unit based on a blur of the optical axis detected by the following, wherein the drive control unit, while the auxiliary light projection unit is operating, An image blur correction device characterized in that the correction optical system is driven to a reference position where the optical axis of the correction optical system coincides with the optical axes of other optical systems of the photographing optical system, and stopped at this reference position. 2. An imaging optical system including a plurality of optical systems, auxiliary light projection means for projecting auxiliary light having a predetermined light projection pattern toward a subject, and an imaging medium formed through the imaging optical system. Defocus amount detecting means for detecting a defocus amount of the optical image of the subject by a phase difference detection method using a light receiving sensor, and the photographing optical so that the optical image is focused based on the defocus amount. A camera provided with a focusing means for driving a system, a blur detecting means for detecting blurring of an optical axis of the photographing optical system, a correction optical system for image blur correction included in the photographing optical system, and the correction optical system. Driving means for driving the correction optical system in two axial directions orthogonal to each other in a plane perpendicular to the optical axis of the system, and the blurring of the optical image due to the blurring of the optical axis of the photographing optical system are offset. So An image blur correction device comprising: a drive control unit that controls the drive unit based on a blur of the optical axis detected by the blur detection unit, wherein the drive control unit operates the auxiliary light projection unit. During this time, the optical axis of the correction optical system is located on the plane including the optical axis of the other optical system of the photographing optical system along the direction perpendicular to the direction in which defocus can be detected by the light receiving sensor. The image blur correction apparatus is characterized in that the correction optical system is driven so as to stop the driving of the correction optical system in a direction parallel to the detectable direction of the light receiving sensor in the two axis directions. 3. The drive control means blurs the optical image in an axial direction intersecting the detectable direction of the light receiving sensor in the two axial directions while the auxiliary light projecting means is operating. The image blur correction apparatus according to claim 2, wherein the correction optical system is driven to cancel the above. 4. An automatic focus detection function for projecting auxiliary light having a predetermined light projection pattern toward a subject and detecting a defocus amount of an optical image of the subject based on the reflected light by a phase difference detection method. A photographic lens mounted on a camera body, comprising: a photographic optical system having a correction optical system for image blur correction, wherein the optical image is formed on an photographic medium provided in the camera body; A shake detecting means for detecting a shake of the optical axis of the system; a driving means for driving the correcting optical system in two axial directions orthogonal to each other in a plane perpendicular to the optical axis of the correcting optical system; Drive control means for controlling the drive means based on the blur of the optical axis detected by the blur detecting means so as to cancel the blur of the optical image caused by the blur of the optical axis; and the camera body. And a camera operating state detecting unit that detects whether or not the auxiliary light is projected. While the camera operating state detecting unit detects that the auxiliary light is being projected, the drive control unit is , The optical axis of the correction optical system is located on a plane including a direction perpendicular to the direction in which the defocus amount can be detected by the light receiving sensor and including the optical axes of other optical systems of the photographing optical system. A photographing lens, characterized in that the correction optical system is driven and driving of the correction optical system is stopped in a direction parallel to the detectable direction of the light receiving sensor in the two axis directions. 5. The drive control means, while the camera operation state detection means detects that the auxiliary light is projected, sets the drive control means to the detectable direction of the light receiving sensor in the two axis directions. The taking lens according to claim 4, wherein the correction optical system is driven to cancel the blurring of the optical image in the intersecting axial directions. 6. A camera body to which a taking lens is attached, focus detecting means for detecting a defocus amount of an optical image of an object formed through the taking lens by a phase difference detection method, and the focus detecting means. Means for assisting the detection of the defocus amount by means, auxiliary light projection means for projecting auxiliary light having a stripe-shaped projection pattern toward the subject, and the defocus amount detected by the focus detection means. A lens drive amount calculation means for calculating a drive amount of the photographing lens so that the optical image is focused on the basis of the focus detection means; And an information transmission unit that transmits information indicating that the light projection unit operates and that the auxiliary light is projected on the subject to the photographing lens. Camera body, wherein the door. 7. A photographing optical system including a correction optical system for image blur correction, a blur detecting unit for detecting blurring of an optical axis of the photographing optical system, and a plane perpendicular to the optical axis of the correction optical system. A photographic lens comprising: a drive unit that drives the correction optical system in two axial directions orthogonal to each other; and a drive control unit that controls the drive unit based on the blur of the optical axis detected by the blur detection unit. A defocus amount detecting means for detecting a defocus amount of an optical image of a subject formed through the photographing optical system in a state where the photographing lens is mounted, based on a phase difference method; and the defocus amount detecting means. Based on the defocus amount, auxiliary light projection means for projecting auxiliary light having a predetermined light projection pattern toward the subject in order to assist the detection of the defocus amount by A camera body including a focusing unit that drives the photographing optical system so that the optical image is focused; and, in a state where the photographing lens is mounted on the camera body, the photographing lens and the camera body Communication means for transmitting data between the defocus amount detecting means, information about a direction in which defocus can be detected by the light receiving sensor in the defocus amount detecting means, and the auxiliary light projecting means in the camera body are operated, and the auxiliary light is Auxiliary light projection information indicating that the auxiliary light is projected on the subject is transmitted from the camera body to the photographing lens via the communication unit, and when the auxiliary projection information is transmitted in the photographing lens, the drive control is performed. A means is a plane along a direction perpendicular to the detectable direction of the light receiving sensor and including an optical axis of another optical system of the photographing optical system. And driving the correction optical system so that the optical axis of the correction optical system is located, and stopping the driving of the correction optical system in the direction parallel to the detectable direction of the light receiving sensor in the two axis directions. A camera system characterized by: 8. When the auxiliary light projection information is transmitted to the photographing lens, the drive control means is configured to perform the driving in only the axial direction intersecting the detectable direction of the light receiving sensor in the two axial directions. The camera system according to claim 7, wherein the correction optical system is driven to cancel a blur of an optical image. 9. A photographing optical system including a plurality of optical systems, auxiliary light projecting means for projecting auxiliary light having a predetermined light projection pattern toward a subject, and an imaging medium formed on the imaging medium via the photographing optical system. Defocus amount detecting means for detecting the defocus amount of the optical image of the subject by a phase difference detection method, and focusing for driving the photographing optical system so that the optical image is focused based on the defocus amount. A camera including means for detecting blurring of an optical axis of the photographing optical system, a correction optical system for image blur correction included in the photographing optical system, and a correction optical system perpendicular to the optical axis of the correction optical system. Drive means for driving the correction optical system in two axial directions orthogonal to each other in a flat plane, and the blur detection means for canceling the blur of the optical image caused by the blur of the optical axis of the photographing optical system. To An image blur correction apparatus comprising: a drive control unit that controls the drive unit based on a shake of the optical axis detected by the above-mentioned, wherein the drive control unit, when the auxiliary light projection unit is operated, Prior to the operation of the auxiliary light projection means,
An image blur correction device characterized in that the correction optical system is driven to a reference position where the optical axis of the correction optical system coincides with the optical axes of other optical systems of the photographing optical system, and stopped at this reference position. 10. A photographing optical system including a plurality of optical systems,
An auxiliary light projection unit that projects auxiliary light having a predetermined light projection pattern toward a subject, and a defocus amount of an optical image of the subject formed on an imaging medium via the photographing optical system using a light receiving sensor are used. In the camera, there is provided defocus amount detection means for detecting a phase difference detection method, and focusing means for driving the photographing optical system so that the optical image is focused based on the defocus amount. A shake detection unit that detects a shake of an optical axis of a system, a correction optical system included in the photographing optical system for image shake correction, and two axial directions orthogonal to each other in a plane perpendicular to the optical axis of the correction optical system. And a drive unit for driving the correction optical system, and a blur of the optical axis detected by the blur detection unit so as to cancel the blur of the optical image caused by the blur of the optical axis of the photographing optical system. An image blur correction device comprising: a drive control means for controlling the drive means based on the above, wherein the drive control means, when the auxiliary light projection means is operated, prior to the start of operation of the auxiliary light projection means. ,
An optical axis of the correction optical system is located on a plane including a direction perpendicular to a direction in which a defocus amount can be detected by the light receiving sensor and including an optical axis of another optical system of the photographing optical system. An image blur correction apparatus, characterized in that the correction optical system is driven and driving of the correction optical system is stopped in a direction parallel to the detectable direction of the light receiving sensor in the two axis directions.