JP3424440B2 - Camera with image stabilization function - Google Patents

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art A camera equipped with a camera shake correction function (hereinafter, referred to as a camera
It is called an image stabilization camera. ) Is being developed. In particular, the zoom lens is now equipped as standard, and nowadays it is easy to shoot long focal lengths due to its high magnification. The image stabilization function is becoming indispensable.

In the case of correcting a camera shake by using such a camera shake correction function, first, the light from the subject which has entered the camera shake detection optical system and passed through the imaging lens is transferred to the CCD (c
Harvest-coupled device) (charge-coupled device)
Detect camera shake. Then, according to the amount of camera shake and the camera shake direction, the lens group for camera shake correction is decentered in parallel with the optical axis of the camera optical system by the camera shake correction lens drive system, so that The blurring of the light from the incident subject is corrected, and the subject image is always formed at the same position on the surface of the film. With the above-described configuration, camera shake correction has been performed conventionally.

[0004]

However, in order to provide the camera with the camera shake correction function as described above,
A camera shake detection optical system and a camera shake detection sensor are necessary, and a space for them must be provided inside the camera. In particular, in the case of a compact camera, there is a demand for reducing the size and weight of the camera as much as possible, but providing a camera shake correction function violates the demand. In view of such a situation, an object of the present invention is to provide a camera shake correction camera that is small and lightweight without taking up an extra space even if a camera shake correction function is provided.

[0005]

In order to achieve the above object, in the present invention, attention is paid to the fact that the camera shake detection section is composed of an optical system and a photoelectric conversion element such as a CCD, and is different from the photographing optical system.
A pair of imaging lenses provided in the
Photoelectric conversion element that receives each incident light
Is equipped with a pair of sensors, one of which is a camera shake detection sensor
It also serves as a distance measurement sensor using the phase difference detection method.
ing. As a result, even if a camera shake correction function is provided, it is possible to bring about the effects of reduction in size, weight and cost without taking up extra space.

[0006]

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 vertical cross-sectional view schematically showing the basic structure of the camera shake correction camera of the present invention. In the figure, 1-3 are lens groups of the photographing optical system, 4 is an aperture / shutter unit, 5 is film, and 6
Is an imaging lens, 7 is a viewfinder lens, 8 is a camera shake detection sensor, 9 is a camera shake correction lens drive system of the photographing optical system,
Reference numeral 10 is a finder, 11 is a camera shake correction lens of the finder optical system, and 12 is a camera shake correction lens drive system of the finder optical system.

In the case of correcting the so-called camera shake at the time of photographing in which the image of the object is exposed on the film 5, first, the light from the object that has entered the camera shake detection optical system and passed through the imaging lens 6 is transferred to the CCD ( A camera shake detection sensor 8 composed of a photoelectric conversion element or the like such as a charge-coupled device receives light and detects camera shake. Then, according to the amount of camera shake and the camera shake direction, the lens group 2 for camera shake correction is decentered in parallel with the optical axis X1 of the photographing optical system by the camera shake correction lens drive system 9 The blurring of light from the subject that has entered the optical system is corrected, and the subject image is always formed at the same position on the surface of the film 5.

In the case of correcting camera shake during so-called framing, which determines the shooting range and composition through the viewfinder 10, first, similarly, first, from a subject which has entered the camera shake detection optical system and passed through the imaging lens 6. Light is received by the camera shake detection sensor 8 to detect camera shake. Then, according to the amount of camera shake and the camera shake direction, the camera shake correction lens 1
By deviating 1 in parallel with the optical axis X2 of the finder optical system by the camera shake correction lens drive system 12, the blurring of light from the subject incident on the finder optical system is corrected.

With the above configuration, when the user observes from the finder 10 the light from the subject that has entered the finder optical system and has passed through the finder lens 7 during framing, the finder image will have a camera shake correction. Since it is possible to check the operation of the image stabilization function, you can use the camera with confidence.

Then, only the camera shake correction lens drive system 12 is operated at the time of framing and only the camera shake correction lens drive system 9 is operated at the time of exposure to reduce the power consumption during the camera shake correction operation. You can It is also possible to activate both of the camera shake correction lens systems 9 and 12 at the time of exposure so that shooting can be performed while confirming the operation of the camera shake correction function to the end.

FIG. 2 shows a combination of a lens group 2 for camera shake correction of the photographing optical system and a camera shake correction lens drive system for driving the camera shake correction lens 11 of the finder optical system, and as a camera shake correction lens drive system 13. This is a summary of the camera shake reduction cameras.

FIG. 3 shows the configuration of the control system of the camera shake correction camera of the present invention. Reference numeral 14 is a camera operation control unit including a microcomputer, 15 is a shutter button, 16 is a distance measuring sensor, 17 is a photometric sensor, 18 is a camera attitude detection sensor, 19 is a focusing lens position detection sensor, 20 is a shutter, 21 Is a shutter drive circuit, 22 is an aperture, 23 is an aperture drive circuit, 24 is a focusing lens drive actuator for focusing,
Reference numeral 25 is a focusing lens drive circuit, 26 is a flash, 27 is a flash voltage supply circuit, 28 is a film feed motor, and 29 is a film feed motor drive circuit.

Further, 8 is a camera shake detection sensor, 30 is a camera shake correction control section composed of, for example, a microcomputer, 31 is a photographing optical system camera shake correction lens position detection sensor, and 32 is a viewfinder optical system camera shake correction lens position. A detection sensor, 33 is an actuator for driving a camera shake correction lens for a photographing optical system, 34 is a driving circuit for a camera shake correction lens for a photographing optical system, 35 is an actuator for driving a viewfinder optical system shake correction lens, and 36 is a viewfinder optical system shake correction lens It is a drive circuit.

In the figure, when the user presses the shutter button 15 halfway (S1 ON), the camera operation control section 14 determines the distance between the object and the camera based on the output of the distance measuring sensor 16. Alternatively, the amount of defocus is calculated. Further, the camera operation control unit 14 calculates the exposure amount based on the brightness information of the subject output from the photometric sensor 17.

On the other hand, the camera shake correction control unit 30 calculates the camera shake amount based on the output of the camera shake detection sensor 8 and controls the viewfinder optical system camera shake correction lens drive circuit 36 in accordance with the camera shake amount. , The finder optical system camera shake correction lens driving actuator 35 is operated. And
The position of the driven finder optical system camera shake correction lens 11 is detected by the finder optical system camera shake correction lens position detection sensor 32, and this is fed back to perform camera shake correction of the finder optical system.

Next, the shutter button 1 is operated by the user.
When 5 is fully pressed (S2 ON), the camera operation control unit 14 controls the focusing lens drive circuit 25 according to the already calculated subject distance or focus shift amount,
The focusing lens driving actuator 24 is operated. Then, the position of the driven focusing lens is detected by the focusing lens position detection sensor 19 and is fed back to adjust the focus of the photographing optical system. Further, the camera operation control unit 14
After the focus adjustment operation, the camera shake correction control unit 30 is instructed to perform the camera shake correction of the photographing optical system, and then the diaphragm / shutter drive circuit 20 is controlled according to the already calculated exposure amount to operate the diaphragm / shutter unit 4. Then, the exposure operation is performed.

On the other hand, the camera shake correction control unit 30 turns on S2ON.
After that, camera shake correction of the photographing optical system is performed based on an instruction from the camera operation control unit 14. Specifically, even during exposure after S2 ON, the amount of camera shake is calculated based on the output of the camera shake detection sensor 8, and the image capturing optical system camera shake correction lens drive circuit 34 is controlled according to the amount of camera shake to perform image capturing. The actuator 33 for driving the optical system image stabilization lens is operated. Then, the position of the driven image pickup optical system image stabilization lens 2 is detected by the image pickup optical system image pickup lens position detection sensor 31 and is fed back to perform image pickup correction of the image pickup optical system. At this time, camera shake correction of the finder optical system may be performed at the same time.

When the exposure is completed, the above operation is terminated, the film feeding motor drive circuit 29 is controlled to drive the film feeding motor 28, and the film is fed. The camera attitude detection sensor 18 is related to the operation of the camera shake correction lens driving actuator, which will be described in detail later. Further, a flowchart of camera shake correction including the time when the flash 26 emits light will be described later. Further, the difference between the camera shake correction control at the time of framing and that at the time of photographing will be described later in detail.

FIG. 4 is a vertical sectional view schematically showing the optical system of the camera shake detection sensor 8. Here, the distance measuring sensor 16 is also used. In the figure, the first lens array 41 is a combination of two convex lenses, and the second lens array 4
Reference numeral 2 denotes a combination of two concave lenses, which form a subject image and improve aberration characteristics in the two optical axes. In addition, the light shielding sheet 43 cuts out light harmful to the sensor. Reference numeral 44 denotes a light receiving element formed of a one-chip semiconductor which is a main body of the sensor, and detects light from a subject by the two light receiving areas 45 and 46. Incidentally, 40 is a lens holder, and 47 is a package of the light receiving element 44.

FIG. 5 is an enlarged schematic view of the surface of the light receiving element 44. When this light receiving element 44 is used for camera shake detection, the output of either one of the two light receiving areas shown in the figure is used to use the high contrast part of the subject image. This camera shake detection sequence will be described later in detail. When the light receiving element 44 is used for distance measurement, as shown by the diagonal lines in FIG. 6, a strip-shaped portion of two light receiving areas is used to remove light from the photographing lens (in this case, the imaging lens 6 described in FIG. 1). By the so-called phase difference detection method in which the light flux is divided into two with the optical axis sandwiched, two object images on this area are compared to detect the distance. It is also possible to move the distance measuring area up and down by moving the strip-shaped area used for distance measuring up and down with respect to the area.

FIG. 7 shows a case where the optical axes in FIG. 4 are made one. The first lens 48 is a convex lens, and the second lens 49
Is a concave lens. Here, when the light receiving element 44 is used for distance measurement, the distance is detected by a so-called contrast method which makes use of the fact that the contrast of a focused subject image is maximized.

FIG. 8 is a compact view in which the aberration characteristic is improved by using the lens 50 with the diffraction grating and the second lens is omitted. The width of this diffraction grating is 80μ
It is about m to 200 μm, and becomes narrower toward the periphery of the lens.

FIG. 9 shows a case where the light receiving element 44 has a structure different from that of FIG. In the same figure, the light receiving portions 52 of the four camera shake detection sensors are arranged so as to be close to one of the light receiving portions 51 of the phase difference detection type distance measuring sensor, and they are integrated into one chip. By using one chip as described above, it is possible to solve the problems of cost and space due to the addition of the camera shake detection sensor. In this case, the optical system of the sensor has two systems, as schematically shown by a chain double-dashed line in FIG.
By dividing the light receiving unit of the camera shake detection sensor as in this example, it is possible to reduce the number of pixels of each light receiving unit, shorten the reading time, and increase the calculation processing speed of the camera shake correction. In the case of the light receiving element of this figure,
Since it is composed of the light receiving portions 51 on the pair of lines,
It is not possible to change the distance measurement area like the element in Fig. 5,
It is fixed at the center in the vertical direction.

FIG. 10 shows an example in which the light receiving portions 53 of the upper half and the lower half of the camera shake detection sensor are respectively arranged in the optical systems of the two systems of sensors. FIG. 11 shows an example in which a light receiving section 54 of the photometric sensor is further arranged between the light receiving sections 51 of the distance measuring sensors of FIG. In this case, the optical system of the sensor has three systems, as schematically shown by a chain double-dashed line in FIG. 12
Is a light receiving unit 55 that also serves as a photometric sensor and a camera shake detection sensor.
It is an example in which is arranged. Also in this case, the optical system of the sensor has three systems as shown by the chain double-dashed line in the figure.

FIG. 13 shows a so-called infrared active distance measuring sensor that obtains distance information from the angle of deviation of both infrared light projecting light and light receiving light in the triangulation method, and a camera shake detection sensor. It is a combination. In the figure, reference numeral 57 is a light projecting section including an infrared light emitting diode and the like, and 58 is a light receiving section including a phototransistor and the like.

In general, the infrared active system uses the light projecting section 5
Since the distance between 7 and the light receiving unit 58, that is, the baseline length determines the accuracy of the distance information, it is necessary to increase the baseline length. In this case, a large space exists between the light projecting unit 57 and the light receiving unit 58. Therefore, by disposing the light receiving unit 56 of the camera shake detection sensor in that portion, no wasted space is generated. Can be In this case, the optical system of the sensor has three systems, as schematically shown by a chain double-dashed line in FIG.

FIG. 14 is a vertical sectional view schematically showing the structure of the camera shake correction camera according to the present invention when the camera shake detection optical system is of the TTL system. In the figure, a part of the light beam split by the beam splitter 60 arranged in the photographing optical system is guided to the camera shake detection sensor 8 to detect camera shake. The viewfinder optical system is omitted in FIG.

FIG. 15 is a development of FIG. As shown in the same figure, the light flux passing through the mirror 61 and the imaging lens 62 is received by the camera shake detection sensor 8, and the camera shake detection sensor 8 is vibrated in the direction of arrow A by the piezoelectric element 63, so that the subject image By finding the direction in which the contrast increases, it can also be used as a distance measurement sensor by the contrast method. With such a configuration, it is possible to solve the problems of cost and space due to the addition of the camera shake detection sensor.

FIG. 16 schematically shows the external appearance of the front of the camera shake correction camera according to the present invention. In the figure, reference numeral 64 denotes a camera shake detection infrared auxiliary light projecting unit, which emits infrared auxiliary light from the subject when the light from the subject is insufficient, so that this light is emitted to the film during exposure. It is possible to reliably detect camera shake without being reflected. Incidentally, 65
Is a window for a distance measuring sensor / camera shake detecting sensor, 66 is a finder, and 67 is a flash.

FIG. 17 is a side view showing the overall structure of a camera shake correction camera according to the present invention in which a camera shake correction device is incorporated. As shown in the figure, in the photographing optical system including the lens groups L1 to L3, the camera shake correction lens group L2 is decentered parallel to the reference optical axis AX to correct the camera shake during shooting. The reference optical axis AX is an optical axis of the photographing optical system that serves as a reference for the camera shake correction operation, that is, the common axis of the lens groups L1, L2, and L3 before the camera shake correction operation. Therefore, decentering parallel to the reference optical axis AX means decentering so that the optical axis of the camera shake correction lens group L2 after decentering is positioned parallel to the reference optical axis AX.

FIG. 18A is a sectional view taken along the line BB of FIG. 18B and mainly shows a structure relating to camera shake correction. FIG. 18B is a cross-sectional view taken along the line AA of FIG. 18A and mainly shows a structure related to focusing. As shown in the figure, the camera shake correction apparatus incorporated in the camera shake correction camera according to the present invention is designed to decenter the lens frame 71 holding the camera shake correction lens group L2 and the camera shake correction lens group L2 in parallel. The impact actuators Ax and Ay for driving the lens frame 71 are provided, and the lens frame 71 is held via the impact actuators Ax and Ay.
It is characterized in that it has an underframe 72 that moves in the direction along the reference optical axis AX (Z direction in FIG. 18) together with the lens frame 71 and the impact actuators Ax and Ay when focusing 1 to L3.

As shown in FIG. 18, in this camera shake correction device, a ball frame 71 constituting a first holding member and an underframe 72 constituting a second holding member are two impact actuators Ax and Ay. It is connected and unitized. Then, the impact actuators Ax and Ay are used as a camera shake correction driving source for the parallel eccentricity, whereby a direction perpendicular to the reference optical axis AX (that is, x and y).
(Direction) to drive the camera shake correction lens unit L2.

On the other hand, at the time of focusing, an impact actuator Az forming a focusing mechanism, which will be described later, is used as a focusing drive source, whereby the underframe 72 is moved in the direction along the reference optical axis AX (ie, z direction). By driving, the underframe 72 is moved together with the camera shake correction device. The above-mentioned three impact actuators Ax, Ay, and Az are all piezoelectric elements (piezo-electric elemens) that deform when voltage is applied.
It is a piezoelectric linear actuator that utilizes the characteristics of
By applying a voltage to the piezoelectric element to which the driving member is attached so that the expansion and contraction speeds are different, the driven member frictionally coupled to the driving member is moved. The operation principle is disclosed in Japanese Patent Laid-Open No. 4-69070, etc., and detailed description thereof is omitted here.

As shown in FIG. 18, the camera shake correction device comprises a lens frame 71, an underframe 72, piezoelectric elements PEx, PEy, rods 74x, 74y, moving elements 75x, 75y and the like. As shown in FIG. 19, the lens frame 71 is integrally formed with coupling portions 71a and 71b.
As shown in 0, since the distance between the connecting portions 71a and 71b is smaller than the diameter of the rods 74x and 74y, the rods 74x and 74b are interposed between the connecting portions 71a and 71b.
When y is inserted, the elasticity of the bead frame 71 itself causes the rod 7
4x and 74y are frictionally coupled to the coupling portions 71a and 71b. That is, by simultaneously sandwiching the two rods 74x and 74y that are orthogonal to each other with the coupling portions 71a and 71b, the lens frame 71 is in a plane perpendicular to the reference optical axis AX (that is, xy).
Surface).

Further, as shown in FIG. 20, the inner diameters of the movers 75x and 75y having a C-shaped cross section are as follows.
It is smaller than the diameter of 74y, and the rod 74
x and 74y are made of a material harder than the movers 75x and 75y. Therefore, the holes 75 of the movers 75x and 75y
When the rods 74x and 74y are inserted into h, the moving element 75
The inner peripheral surfaces of x and 75y cause elastic deformation while tightening the outer peripheral surfaces of the rods 74x and 74y. That is, the mover 75
x and 75y are slidable along the axial directions of the rods 74x and 74y, and the rods 74x and 74y are slidable by their own elastic force.
Frictionally coupled to 74y.

As shown in FIG. 21, the underframe 72 has fixed portions 72ax and 72ay and bearing portions 72bx and 72b.
The by, the connecting portion 72c, and the guide portion 72d are integrally formed, and the fixing portions 72ax and 72ay of the underframe 72 are
As shown in FIG. 18, the piezoelectric elements PEx and PEy are fixed at one end surface thereof. Rods 74x, 74y are slidably fitted in holes 72bh formed in the bearings 72bx, 72by, and are provided on the opposite end faces of the piezoelectric elements PEx, PEy fixed to the fixing parts 72ax, 72ay. ,
One ends of the rods 74x and 74y are fixed. When the piezoelectric elements PEx and PEy are rapidly deformed by being applied with a voltage, the rods 74x and 74y are vibrated in their longitudinal directions, and the movers 75x and 75y are frictionally slid.

Further, the connecting portions 71a and 71b shown in FIG.
As shown in FIG. 18 (a), moving elements 75x and 75y are fitted between the side surfaces 71c and 71d. Therefore, when the movers 75x and 75y are driven by the piezoelectric elements PEx and PEy, the lens frame 71 is pushed by the movers 75x and 75y on the side surface 71c or 71d to move. At this time, mover 7
Even if 5x is driven, on the rod 74y side, rod 74y
Since the connecting portions 71a and 71b sandwiching the arrow slide in the drive direction, the camera shake correction drive in the lateral direction (the x direction in FIG. 18) is not hindered. This also applies to the vertical direction (x direction in FIG. 18).

As described above, the impact actuators Ax and Ay forming the camera shake correction driving source shown in FIG.
However, by moving the lens frame 71 holding the camera shake correction lens group L2 in the plane perpendicular to the reference optical axis AX, the camera shake correction lens group L2 is decentered in parallel. Due to this parallel eccentricity, the position of the camera shake correction lens unit L2 changes in the x and y directions.
ht emitting diode) (light emitting diode, not shown) and 2
It is detected in combination with the dimension PSD (position sensing device) 70. Here, the PSD is an element that detects which position the spot light irradiates when the spot light is radiated.

The pinhole plate (not shown) is a ball frame 71.
Is fixed to the LED and the two-dimensional P shown in FIG.
The SD 70 is fixed to the underframe 72. The pinhole plate is located so as to be sandwiched between the LED and the two-dimensional PSD 70. Therefore, the movement of the ball frame 71 is read as the movement of the pinhole plate, that is, the movement of the light coming out of the pinhole, by the two-dimensional PSD 70 from the irradiation position, so that the parallel eccentric position is detected. The pinhole plate and the LED may be fixed to the lens frame 71.

Next, a focusing mechanism for focusing will be described. As shown in FIG. 18B, the focusing mechanism includes an underframe 72, a holding frame 73, a piezoelectric element PEz,
It is composed of a focus rod 74z and the like. Holding frame 73
As shown in FIGS. 17 and 18, an underframe 72 and a shutter unit (not shown) are held by the holding frame 73 along the reference optical axis AX during zooming and collapsing. Move in the direction. Further, the underframe 72 is made of a material softer than the focus rod 74z.

As shown in FIG. 21 (b), a focus rod 74 is attached to the connecting portion 72c formed on the underframe 72.
A hole 72ch smaller than the diameter of z is formed. The focus rod 74z is made of a material harder than the underframe 72. Therefore, as shown in FIG.
When the focus rod 74z is inserted into the hole 72ch, the inner peripheral surface of the coupling portion 72c causes elastic deformation while tightening the outer peripheral surface of the focus rod 74z. That is, the underframe 72 is slidable along the axial direction of the focus rod 74z at the coupling portion 72c, and is frictionally coupled to the focus rod 74z by its own elastic force.

As shown in FIG. 18B, a bottomed hole 74zh is formed at one end of the focus rod 74z, and one end of the piezoelectric element PEz is fixed to the bottom surface 74za of the hole 74zh. On the other hand, the other end of the piezoelectric element PEz is fixed to the bottom surface portion 73a of the hole 73h of the holding frame 73, and the focus rod 74z is the hole of the holding frame 73 at the end portion on the side where the hole 74zh is formed. 73h is slidably fitted along the reference optical axis AX. Further, in order to reliably transmit the expansion and contraction of the piezoelectric element PEz to the focus rod 74z, the focus rod 74z has a hole so that there is a gap between the focus rod 74z and the bottom surface portion 73a of the hole 73h. The depth of 74zh is adjusted. A voltage is applied to the piezoelectric element PEz to rapidly deform it, so that the focus rod 74z is vibrated in its longitudinal direction and the underframe 72 is frictionally slid.

As shown in FIG. 18, the impact actuator Az, which constitutes the focusing drive source, applies a driving force to the underframe 72 so that the camera shake correction device can be moved along the reference optical axis AX during focusing ( 18) in the z direction). At this time, the underframe 72
A guide portion 72d (shown in FIG. 21) formed on the focus guide FG fixed to the holding frame 73.
Are fitted, the movement of the underframe 72 in a plane perpendicular to the reference optical axis AX is restricted.

Here, the camera shake correction lens unit L2 is also used as a focusing lens, so that only the camera shake correction lens unit L2 is used for focusing, but other lens units are used for focusing. It may be configured to perform focusing by interlocking with the movement of the camera shake correction device.
Further, the impact actuator Az may be configured to move the camera shake correction device in the direction along the reference optical axis AX during zooming by applying a driving force to the underframe 72.

The position of the camera shake correction lens unit L2 changes in the z direction due to the movement of the camera shake correction device at the time of focusing, but the position is the magnetized focus rod 74z.
MR (magnetic resistanc) fixed to the underframe 72
e) It is detected in combination with the sensor 76. This MR
The sensor 76 is a magnetic sensor including a magnetoresistive element having a characteristic that its resistance value changes when a magnetic field is applied. The detection of the parallel eccentric position is performed by detecting the magnetized rod 74
x, 74y and M fixed to the movers 75x, 75y
It may be performed in combination with the R sensor.

FIG. 22 is a diagram showing a case where the motor M is used as the focusing drive source instead of the piezoelectric element PEz. In the figure, the underframe 72 'has a female screw portion, which is fitted to the male screw portion of the lead screw 74'z. The lead screw 74'z is rotatably fitted to the holding frame 73 ', and the motor M is held by the holding frame 73' (not shown). The driving force of the motor M is transmitted to the lead screw 74'z via a reduction gear (not shown). When the lead screw 74'z rotates, the underframe 72 'is screw-fed and moves the camera shake correction device in the direction along the reference optical axis AX (z direction) during focusing.

FIG. 23 is a perspective view schematically showing a case where an electromagnet and a coil are used as a driving source for camera shake correction and focusing. In the figure, a coil 81 and four elastic rods 82a to 82d are held by a holding frame (not shown). At the time of zooming and collapsing, this holding frame moves in the direction along the reference optical axis AX. The elastic rods 82a to 82d are fitted into the lens frame 83 so as to be slidable in the optical axis direction, and the lens frame 83 holds the lens group L2. A magnet (not shown) is fixed to the lens frame 83 to receive an electromagnetic force from the coil 81 in the direction along the reference optical axis AX during focusing driving. Here, the elastic rods 82 a to 82 d, the ball frame 83, and the like are actually installed inside the coil 81.

Of the elastic rods 82a to 82d, for example, 8
A magnetic body 84 is attached to one end of 2a, and four electromagnets 85a to 85d are close to the magnetic body 84. At this time, when 85a is energized, the magnetic body 84 is attracted in the x direction, the elastic rods 82a to 82d are curved accordingly, and the lens frame 83 is driven in the x direction. Similarly, electromagnet 85
By appropriately energizing a to 85d, the ball frame 83 is set to x,
It can be moved freely in the y direction. A coil is fixedly mounted on the ball frame 83, and a magnet is held by the holding frame.
A so-called moving coil type configuration may be used in which the coil fixed to the lens frame 83 receives an electromagnetic force in the direction along the reference optical axis AX.

FIG. 24 shows the two-dimensional PSD described in FIG.
It is the perspective view which showed the type of usage of 70 typically. In the figure, the pinhole plate 91 includes an LED 92 and a two-dimensional PS.
It is located so as to be sandwiched between it and D70. At this time, the movement of the pinhole plate 91, that is, the movement of the light emitted from the pinhole is read by the two-dimensional PSD 70 from the irradiation position, whereby the position of the object connected to the pinhole plate 91 is detected. The pinhole plate 91 and LE
The D92 may be combined and integrated.

FIG. 25 shows the MR sensor 7 described with reference to FIG.
It is the perspective view which showed the type of usage of 6 typically. In the figure, the MR sensor 76 moves in the longitudinal direction in the vicinity of the magnetized plate 93 in which the N pole and the S pole are alternately magnetized, and the state of the magnetic field is read to detect the object connected to the MR sensor 76. The position is detected. In the embodiment of the present invention, an example in which the parallel eccentric position at the time of camera shake correction is detected by the PSD and the movement in the reference optical axis direction at the time of focusing is detected by the MR sensor is shown. It is not limited to the place of use.

FIG. 26 is a perspective view schematically showing a case where a photo reflector is used for position detection. In the figure, the light projected from the photo reflector 94 is reflected by the code plate 95 and is received by the photo reflector 94 again. The photo-reflector 94 moves in the longitudinal direction of the code plate 95 and reads the bar code on the code plate 95, whereby the position of the object connected to the photo-reflector 94 is detected.

FIG. 27 is a perspective view schematically showing a case where a photo interrupter is used for position detection. In the figure, the photo interrupter 96 reads that the light passing through the gap of the photo interrupter 96 is blocked by the blades of the impeller 97 that rotates in synchronization with the movement of the object. Since the number is known, the position of the object is detected. The principle of positioning control by the above-described position detecting method will be described in detail later. Although the camera shake correction mechanism of the photographing optical system has been described in the above description of the embodiments, the camera shake correction mechanism of the finder optical system basically has the same structure. However, the viewfinder optical system has no structure for focus adjustment. Therefore, the impact actuator for driving the camera shake correction lens of the finder optical system perpendicularly to the optical axis is arranged on a holding member (not shown) that holds the finder optical system.

FIG. 28 is a flow chart of the operation relating to shooting by the camera operation control unit 14 described in FIG.
There are two types of camera shake correction modes. Mode 1 is used for framing and mode 2 is used for shooting. In FIG. 28, when the power is turned on, the camera operation control unit 14 determines in step # 5 whether S1 is in the ON state, that is, whether the user has pressed the shutter button 15 halfway. If it is determined that the state is S1 ON, the process proceeds to step # 10. In step # 10, the camera shake correction control unit 30 is instructed to start the camera shake correction mode 1, and subsequently, in step # 15, photometry and exposure calculation are performed.

In the above state, for example, the camera shake correction control unit 30 is made to input the data of the camera shake amount,
The program line may be selected so that the shutter speed becomes high when the amount of camera shake is large.

Then, the process proceeds to step # 20 and S1 is turned on.
It is determined whether or not the state of No. continues, and if it continues, the process proceeds to step # 25. If it is not continued, it is considered that the shutter button 15 has been released, and the process returns to the beginning. In step # 25, it is determined whether the S2 is ON, that is, whether the user has pressed the shutter button 15 completely. If the S2 is ON, the process proceeds to step # 30. In step # 30, the camera shake correction mode 1 is changed to the mode 2, and subsequently in step # 35, the shutter 20 is opened.

Subsequently, the process proceeds to step # 40, and it is determined whether or not it is the timing for the flash 26 to emit light. If it is the timing for emitting light, the process proceeds to step # 45. If it is not the timing for emitting light, the process proceeds to step # 60. In step # 45, camera shake detection is prohibited. This is to prevent erroneous detection of the amount of camera shake due to the influence of noise from flash emission. Subsequently, in step # 50, flash light is emitted, and in step # 55, the prohibition of camera shake detection is released.

In step # 60, it is determined whether or not the exposure time has ended, and when it has ended, step # 65.
Move to. If not completed, the process returns to step # 40. Note that, depending on the shooting conditions, the flash may not be emitted in some cases, and in that case, the above step # 4
The operations in 5, # 50 and # 55 are omitted. Then, in step # 65, the shutter 20 is closed, and in step # 70, the camera shake correction operation is finished.
In step # 75, the film is fed and the process returns to the beginning.

FIG. 29 is a flow chart of the operation related to camera shake correction of the camera shake correction control unit 30 described with reference to FIG. The camera shake correction control unit 30 determines whether or not an instruction to start the camera shake correction is given from the camera operation control unit 14 in step S5 of the figure, and when the instruction is given, the process proceeds to step S10. In order to obtain a subject image for camera shake detection, image processing such as CCD integration is performed based on the information from the camera shake detection sensor 8 in step S10. Subsequently, in step S15, the obtained image data is divided into a plurality of blocks, and the block with the highest contrast is used as the reference for calculating the amount of camera shake.

Subsequently, the process proceeds to step S20, and after a predetermined time, image processing is performed again. In step S25, it is determined whether or not the camera shake detection is prohibited. If not, the process proceeds to step S65. Step S65
In step S70, a block having the highest correlation with the reference part (this becomes the reference part in the next image processing) is detected in the reference part and the reference part is detected. The amount of movement from is calculated and used as the amount of camera shake. Then, the process proceeds to step S75, and it is determined whether or not the amount of camera shake is equal to or larger than a predetermined value.

If the camera shake detection is prohibited in step S25, the process proceeds to step S30 and the previously calculated camera shake amount is set as the camera shake amount this time. Since the camera shake correction operation is repeatedly performed at high speed, camera shake detection is prohibited from the beginning of camera shake correction, and there is no possibility that the previous data does not exist.

In step S35, the current position of the camera shake correction lens is detected, and the process proceeds to step S40.
In step S40, it is determined whether or not the camera shake correction mode 1 is instructed. If the camera shake correction mode 1 is instructed, the process proceeds to step S45, and the camera shake correction amount (camera shake correction lens drive amount) according to the mode 1 is set. Calculate the drive speed. If the camera shake correction mode 1 is not instructed in step S40, that is, if the mode 2 is instructed, the process proceeds to step S60, and the camera shake correction amount (camera shake correction lens drive amount) and drive according to the mode 2 are performed. Calculate speed.

In step S75, when the amount of camera shake is equal to or larger than the predetermined value, it is determined that panning, that is, panning for composition change is performed instead of camera shake, and the process proceeds to step S80. Then, in step S80, the position of the camera shake correction lens is detected, and subsequently in step S85, it is determined to drive the camera shake correction lens to the center of the optical system at a predetermined speed. It should be noted that instead of detecting the amount of camera shake as described above, a slow motion having a lower frequency than that of camera shake may be detected and control may be performed to regard it as panning.

Subsequently, the process proceeds to step S50, and the camera shake correction lens is driven based on the value calculated or determined as described above. At this time, when the camera shake correction mode is 1, the camera shake correction is performed only by the viewfinder optical system, and when the camera shake correction mode is 2, the camera shake correction is performed only by the photographing optical system. Thereby, it becomes possible to reduce the current consumption. Subsequently, in step S55, it is determined whether or not the instruction for camera shake correction is continuing, and if it is continuing, step S2
Returning to 0, the camera shake correction operation is repeated. When the instruction for camera shake correction is canceled, that is, when the instruction for ending camera shake correction is issued, the process returns to the beginning.

FIG. 30 shows a camera shake detection sequence.
The lattice-shaped portion in the figure shows the light receiving portion of the camera shake detection sensor 8. First, in order to obtain a subject image for camera shake detection, the CCD is based on the information from the camera shake detection sensor 8.
Image processing such as integration is performed. Then, the obtained image data is divided into a plurality of blocks, and the block with the highest contrast is used as the reference for calculating the amount of camera shake, and is used as the reference unit 101 as shown in FIG. After a predetermined time, as shown in FIG. 2B, an area slightly wider than the reference section 101 is set as a reference section 102, and a block 103 having the highest correlation with the reference section 101 is detected in the reference section 102 to detect the reference section. The amount of movement from 101 is calculated, and this is taken as the amount of camera shake, and camera shake correction is performed based on this.

Further, after a predetermined time, as shown in FIG. 6C, an area slightly wider than the block 103 is set as a reference portion 102 ', and the block 10 is set in the reference portion 102'.
The block 103 'having the highest correlation with 3 is detected, the amount of movement from the block 103 is calculated, and this is taken as the amount of camera shake, and further camera shake correction is performed based on this.

Further, after a predetermined time, as shown in FIG. 7D, a reference area 102 "is defined as an area slightly wider than the block 103 '.
The block 103 ″ having the highest correlation with 03 ′ is detected to calculate the amount of movement from the block 103 ′, and this is taken as the amount of camera shake, and camera shake correction is further performed based on this amount of camera shake. Repeat the sequence.

As for the detection of the camera shake correction lens drive position or the focusing lens drive position, there is a method of using the MR sensor 76 and the magnetizing plate 93 as described with reference to FIG. Has technical and cost limitations. Therefore, as shown in FIG. 31, the fact that the resistance value of the MR sensor 76 corresponding to the relative position with the magnetized plate 93 appears as a two-phase sinusoidal curve deviated by 90 ° is used. Compare these sinusoids,
It is interpolated by calculating. For example, in the same figure, when the resolution by magnetization is 80 μm, the resolution by interpolation is 20 μm.

However, for driving the camera shake correction lens, finer positioning accuracy is required, and since it has to be realized at low cost, open loop control is performed in addition to the closed loop control by the sensor as described above. More specifically, first, as shown in FIG.
By interpolating the data from the MR sensor 76 having a resolution of m, a resolution of 20 μm can be obtained as shown in FIG. Assuming that the distance from the current position to the target position is 115 μm, as shown in (c) of the figure, 100 μm, which is an integral multiple of 20 μm (in this case, 5 times), is driven by the closed loop control, and as shown in FIG. As shown, the remaining 15 μm is driven by open loop control. The detailed procedure for this will be described below.

FIG. 33 is a flowchart for driving the camera shake correction lens in the camera shake correction control unit 30 shown in FIG. In the figure, if there is an instruction to drive the camera shake correction,
In step * 5, the distance from the current position to the target position is calculated and the drive distance is determined. Continue step * 1
The driving distance in the closed loop is calculated at 0, and the driving distance in the open loop is calculated at step * 15. Then, in step * 20, the closed loop drive is performed, and in step * 25, it is determined whether or not the drive distance in the closed loop has been driven. If it is driven, the process proceeds to step * 30. If it is not driven, the process returns to step * 20.

In step * 30, the number of drive pulses for the actuator in the open loop is calculated, and subsequently, in step * 35, the drive pulse in the open loop is output. Then, in step * 40, it is determined whether or not the driving pulse number in the open loop is output, and if it is output, the camera shake correction lens driving is ended. If not output, return to step * 35. The procedure described above is not limited to the case where the MR sensor 76 is used, and the procedure shown in FIG.
6, the photo reflector 94 described in FIG. 27,
The same applies when the photo interrupter 96 or the like is used.

Here, when the impact actuator described with reference to FIG. 18 is used for driving a camera shake correction lens, data on the number of pulses required to advance a unit distance (hereinafter K
Value) is a problem. For example, if the number of pulses required to advance 1 μm is 1.5, then K = 1.5,
It is sufficient to give 15 pulses to advance 10 μm.
Since the impact actuator is affected by gravity depending on the posture and the driving direction and the K value changes, it is necessary to grasp the K value according to the driving direction in advance. Then, by actually measuring it, a table of K values as shown in FIG. 34 is created, and this is stored in an EEPROM (erectorically erasable / progra
You can enter it in mable read-only memoly).

At the time of photographing, K is obtained from the attitude information from the camera attitude detection sensor 18 and the EEPROM data shown in FIG.
The value is determined, and the camera shake correction lens is driven based on the number of pulses corresponding to the value. Note that the K value is not calculated in advance as described above, but the correlation between the driving distance and the pulse number in the closed loop control immediately before the shift to the open loop control is detected, and the K value is calculated based on that. However, you can also drive the image stabilization lens. The method will be described below.

FIG. 35 is a flow chart when the camera shake correction lens drive in the camera shake correction control section 30 shown in FIG. 3 is performed by calculating the K value during the closed loop drive. In the same figure, if there is an instruction to drive the camera shake correction, the distance from the current position to the target position is calculated in step * 5 to calculate the driving distance. Continue to calculate the driving distance in the closed loop in step * 10, and then step * 1
In step 5, the driving distance in the open loop is calculated. Then, in step * 20, the closed loop drive is performed, and in step * 25, up to one step before the drive distance in the closed loop (in the example of FIG. 32, 20 μm before the resolution after interpolation of the MR sensor, that is, 80 μm from the current position). It is determined whether or not it is driven, and if it is driven, the process proceeds to step * 30. If it is not driven, return to step * 20.

In step * 30, counting of drive pulses is started, and subsequently in step * 35, closed loop drive for the last one step is performed. And step *
In 40, it is determined whether or not the drive has been performed up to the drive distance in the closed loop, and if it is driven, the process proceeds to step * 45. If it is not driven, return to step * 35.
Then, in step * 45, the counting of the drive pulse is ended, and in step * 50, the K value is calculated, and then the process proceeds to step * 55.

In step * 55, the number of drive pulses of the actuator in the open loop is calculated, and then in step * 60, the drive pulse output in the open loop is performed. Then, in step * 65, it is determined whether or not the driving pulse number in the open loop is output, and if it is output, the camera shake correction lens driving is ended. If not output, return to step * 60. According to the method described above, the K value is always calculated from the relationship between the pulse number and the drive amount immediately before entering the open loop control, so that a more accurate drive amount can be obtained in the open loop control.

By the way, assuming that the amount of camera shake calculated by the camera shake detection system is Δx, the amount of eccentricity of the camera shake correction lens necessary for completely correcting the camera shake on the film surface is ΔL.
If it is 0, ΔL0 = k0 · Δx, and the correction at the time of photographing may be performed according to this formula. Here, k0 is a correction coefficient, which is a constant representing the ratio between the amount of camera shake and the amount of eccentricity of the camera shake correction lens. However, if the camera shake is completely corrected according to this formula during framing, the viewfinder image will completely follow the movement of the camera due to camera shake, so it may seem like excessive camera shake correction for a stationary user. There is a sense of incongruity.

Then, in order to make it look like there is no discomfort,
The amount of eccentricity of the image stabilization lens during framing ΔL1 =
It is recommended to drive the camera shake correction lens according to {(β-1) / β} · k0 · Δx = k1 · Δx. Here, β is the finder magnification (the ratio of the size of the subject seen by the finder to the size directly visible to the naked eye), and k1 is a correction coefficient during framing.

Finally, an example of using the taking optical system lens will be described. FIG. 36 shows an embodiment of the optical system of the lens shutter type camera according to the present invention. As shown in the figure, based on a zoom lens with three components and eight elements, focusing is performed by moving the Gr2 group in the optical axis direction, and the same Gr2 group is manually decentered in the direction perpendicular to the optical axis. Correct blur. As an optical system, the size of the optical system is almost unchanged even if the camera shake correction function is added. Incidentally, 104 is a diaphragm. FIG. 37
Is an example of an SLR (single-lens reflex camera) (a single-lens reflex camera), in which camera shake is corrected by decentering a lens shown by diagonal lines in a direction perpendicular to the optical axis. In the same figure, (a) is for wide-angle shooting and (b) is for telephoto shooting. This type of focusing is done with the lens group at the left end of the figure.

[0079]

As described above, according to the present invention,
A pair of imaging lenses provided separately from the photographing optical system, and
Receives the light incident on each of the imaging lenses
A pair of sensors consisting of photoelectric conversion elements
It is used as a camera shake detection sensor and is measured by the phase difference detection method.
By also functioning as a distance sensor, it is possible to reduce the size, weight and cost of a camera equipped with a camera shake correction function without taking up extra space even if the camera has a camera shake correction function. Further, in the camera provided with the camera shake correction function according to the second, fifth and seventh aspects , it is possible to further reduce the size, the weight and the cost by sharing the photometric sensor.

[Brief description of drawings]

FIG. 1 is a vertical sectional view schematically showing a basic configuration of a camera shake correction camera of the present invention.

FIG. 2 is a diagram that also serves as a camera shake correction lens drive system.

FIG. 3 is a diagram showing a configuration of a control system of the image stabilization camera of the present invention.

FIG. 4 is a vertical sectional view schematically showing an optical system of a camera shake detection sensor.

FIG. 5 is a diagram schematically showing an enlarged surface of a light receiving element.

FIG. 6 is a diagram showing a light receiving area when a light receiving element is used for distance measurement.

FIG. 7 is a diagram showing a case where the optical axes in FIG. 4 are unified.

FIG. 8 is a diagram showing a case where a lens with a diffraction grating is used.

FIG. 9 is a diagram in which a camera shake detection sensor is arranged near a distance measuring sensor.

FIG. 10 is a diagram showing an example in which a hand shake detection sensor divided into an upper half and a lower half is arranged in the optical systems of the two systems of sensors.

11 is a diagram showing an example in which a photometric sensor is further arranged between the distance measuring sensors of FIG.

FIG. 12 is a diagram showing an example in which a sensor for both photometry and camera shake detection is arranged.

FIG. 13 is an infrared active distance measuring sensor;
The figure which shows the example which combined the camera shake detection sensor.

FIG. 14 is a vertical cross-sectional view showing the configuration when the camera shake detection optical system is a TTL system.

FIG. 15 is a diagram showing a case where the camera shake detection sensor of FIG. 14 is also used as a contrast type distance measurement sensor.

FIG. 16 is a diagram schematically showing a front appearance of a camera shake correction camera according to the present invention.

FIG. 17 is a side view showing a state where the camera shake correction device is incorporated in the camera body.

FIG. 18 is a diagram showing the structure of a camera shake correction device.

FIG. 19 is a view showing a front surface and a side surface of a lens frame.

FIG. 20 is a perspective view showing a connecting portion of a mover, a rod, and a lens frame.

FIG. 21 is a view showing an upper surface, a front surface, and a side surface of an underframe.

FIG. 22 is a diagram showing a case where a motor is used as a focusing drive source.

FIG. 23 is a perspective view showing a case where an electromagnet is used as a driving source for camera shake correction.

FIG. 24 is a perspective view schematically showing a usage pattern of a two-dimensional PSD.

FIG. 25 is a perspective view schematically showing a usage pattern of the MR sensor.

FIG. 26 is a perspective view schematically showing a usage pattern of a photo reflector.

FIG. 27 is a perspective view schematically showing a usage pattern of a photo interrupter.

FIG. 28 is a flowchart of an operation related to shooting.

FIG. 29 is a flowchart of an operation related to camera shake correction.

FIG. 30 is a diagram showing a sequence of camera shake detection.

FIG. 31 is a diagram showing the relationship between the position of the MR sensor and the resistance value.

FIG. 32 is an explanatory diagram of a method of using both closed loop control and open loop control together.

FIG. 33 is a flowchart of driving an image stabilization lens.

FIG. 34 is a diagram showing a table of K values.

FIG. 35 is a flowchart for driving a camera shake correction lens by calculating a K value during driving in a closed loop.

FIG. 36 is a diagram showing an example of an optical system of a lens shutter type camera according to the present invention.

FIG. 37 is a diagram showing an example of an optical system of a single lens reflex camera according to the present invention.

[Explanation of symbols]

1-3 Lens groups of shooting optical system 4 Aperture / shutter unit 5 Film 6 Imaging lens 7 Viewfinder lens 8 Camera shake detection sensor 9 Camera shake correction lens drive system of shooting optical system 10 Viewfinder 11 Camera shake correction lens of viewfinder optical system 12 Camera shake correction lens drive system of viewfinder optical system 13 Camera shake correction lens drive system 14 Camera operation control unit 15 Shutter button 16 Distance measuring sensor 17 Photometric sensor 18 Camera attitude detection sensor 19 Focusing lens position detection sensor 20 Shutter 21 Shutter drive circuit 22 Aperture 23 Aperture Drive Circuit 24 Focusing Lens Drive Actuator 25 Focusing Lens Drive Circuit 26 Flash 27 Flash Voltage Supply Circuit 28 Film Feed Motor 29 Film Feed Motor Drive Circuit 30 Image Stabilization Control unit 31 Shooting optical system camera shake correction lens position detection sensor 32 Viewfinder optical system camera shake correction lens position detection sensor 33 Shooting optical system camera shake correction lens drive actuator 34 Shooting optical system camera shake correction lens drive circuit 35 Viewfinder optical system hand Shake correction lens drive actuator 36 Finder optical system Shake correction lens drive circuit 40 Lens holder 41 First lens array 42 Second lens array 43 Light-shielding sheet 44 Light receiving element 45, 46 Light receiving area 47 Package 50 Lens with diffraction grating 51 Distance measurement Sensor light-receiving parts 52, 53, 56 Light-receiving part 54 for camera shake detection sensor Light-receiving part 55 for photometric sensor Light-receiving part 57 for both photometric sensor and camera-shake detection sensor Light-projecting part 58 Light-receiving part 60 Beam splitter 61 Mirror 62 Imaging Lens 63 Piezoelectric element

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI G03B 17/00 G03B 3/00 A (72) Inventor Tetsuro Kamihara 2-3-3 Azuchi-cho, Chuo-ku, Osaka-Osaka International Building Minolta Co., Ltd. (56) Reference JP-A-4-216534 (JP, A) JP-A-5-5832 (JP, A) JP-A-6-245138 (JP, A) JP-A-3-91728 (JP , A)

Claims (12)

(57) [Claims] 1. A photographic optical system, a photographic camera shake correction optical system forming a part of the photographic optical system, a camera shake detection sensor including a photoelectric conversion element, and the camera shake detection sensor based on an output of the camera shake detection sensor. The driving means for decentering the image stabilization optical system for photographing with respect to the optical axis of the photographing optical system and the photographing optical system are different from each other.
A camera having a camera shake correction function, which comprises a pair of imaging lenses provided in
Composed of photoelectric conversion elements that receive the light incident on each
A pair of sensors is provided, and one of the sensors is
It is used as a detection sensor and a distance measuring sensor using the phase difference detection method.
A camera with an image stabilization function that is also used as a camera. 2. On a semiconductor chip provided with the pair of sensors
The camera with a camera shake correction function according to claim 1 , further comprising a photometric sensor . 3. A photographic optical system, a photographic camera shake correction optical system forming a part of the photographic optical system, a camera shake detection sensor including a photoelectric conversion element, and the camera shake detection sensor based on an output of the camera shake detection sensor. The driving means for decentering the image stabilization optical system for photographing with respect to the optical axis of the photographing optical system and the photographing optical system are different from each other.
A pair of imaging lenses provided in the camera with a camera shake correction function, each of the imaging lenses
It consists of a photoelectric conversion element that receives each light
A pair of sensors that make up two light receiving areas,
One of the two light receiving areas is used as the camera shake detection sensor to perform camera shake detection, and a band-shaped portion of the two light receiving areas is used as a distance measurement sensor to perform distance measurement. A camera with an image stabilization function. 4. A photographing optical system, a photographing camera shake correction optical system forming a part of the photographing optical system, a camera shake detection sensor including a photoelectric conversion element, and the camera shake detection sensor based on an output of the camera shake detection sensor. The driving means for decentering the image stabilization optical system for photographing with respect to the optical axis of the photographing optical system and the photographing optical system are different from each other.
A pair of imaging lenses provided in the camera with a camera shake correction function, each of the imaging lenses
Provided <br/> a pair of distance measuring sensor for receiving the light incident on respectively, characterized in that a light receiving portion of the four said shake detecting sensors in proximity to one of the distance measuring sensor A camera with an image stabilization function. 5. A camera having a camera shake correction function according to claim 4 , wherein a photometric sensor is arranged between the distance measuring sensors. 6. A photographing optical system, a photographing camera shake correction optical system forming a part of the photographing optical system, a camera shake detection sensor including a photoelectric conversion element, and the camera shake detection sensor based on an output of the camera shake detection sensor. The driving means for decentering the image stabilization optical system for photographing with respect to the optical axis of the photographing optical system and the photographing optical system are different from each other.
A pair of imaging lenses provided in the camera with a camera shake correction function, each of the imaging lenses
A pair of distance measuring sensors that receive the light incident on each
Provided to the distance measuring sensor and incident on one of the imaging lenses
Area sensor for camera shake detection that receives the upper half of the light, etc.
Camera shake detection area that receives the lower half of the light incident on one side
A camera equipped with a sensor and equipped with an image stabilization function. 7. A photographic optical system, a photographic camera shake correction optical system forming a part of the photographic optical system, a camera shake detection sensor including a photoelectric conversion element, and the camera shake detection sensor based on an output of the camera shake detection sensor. In a camera having a camera shake correction function, the camera having a camera shake correction optical system that is eccentric with respect to the optical axis of the camera optical system, wherein the camera shake detection sensor and the distance measuring sensor are the same semiconductor. A camera provided with a camera shake correction function, characterized in that the camera shake detection sensor is also used as a photometric sensor. 8. A photographic optical system, a photographic camera shake correction optical system forming a part of the photographic optical system, a camera shake detection sensor including a photoelectric conversion element, and the camera shake detection sensor based on an output of the camera shake detection sensor. the photographic camera shake compensating optical system and a driving means for eccentrically with respect to the optical axis of the photographing optical system, a camera having a camera shake correction function, ranging receiving the distance measuring light projecting unit
Are provided on the same semiconductor chip with a predetermined base line apart from each other,
A camera equipped with a camera shake correction function, characterized in that the camera shake detection sensor is arranged on the same chip between the base line lengths . Wherein said distance measuring sensor, a camera having a camera shake correction function according to any one of claims 3 to 7, characterized in that is by the phase difference detection method. Wherein said distance measuring sensor, a camera having a camera shake correction function according to any one of claims 3 to 7, characterized in that is by passive method. 11. The camera with a camera shake correction function according to claim 8 , wherein the distance measuring sensor is of an infrared active type. 12. The distance measuring sensor, a camera having a camera shake correction function according to any one of claims 3 to 7, characterized in that is by contrast method.