JPH0933975A - Correction optical device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent optical performance from being changed at a vibration proofing time and at a vibration non-proofing time. SOLUTION: This device is provided with a restriction part 79A receiving the couple of force (in the direction shown by an arrow 63) generated by the positional relation of the centroid of a correction means 75 decentering an optical axis. Then, the couple of force generated by the positional relation of the centroid of the correction means 75 is received by the restriction part 79A so that the correction means 75 is not inclined(in a direction orthogonally crossed to the optical axis) by the couple of forces.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a correction optical device mounted on an optical device such as a camera for correcting image blur caused by vibration.

[0002]

2. Description of the Related Art In a current camera, all operations important for photographing, such as exposure determination and focusing, are automated, so that even an inexperienced person in camera operation is very unlikely to fail in photographing.

In recent years, a system for preventing a camera shake from being applied to a camera has been studied, and a factor which causes a photographer to fail in photographing has almost disappeared.

Here, a system for preventing camera shake will be briefly described.

The camera shake at the time of photographing is generally a vibration of 1 Hz to 12 Hz as a frequency. At the time of release of the shutter, even if such camera shake occurs, it is possible to take a picture without image shake. As a basic idea, it is necessary to detect the camera shake caused by the camera shake and to displace the correction lens according to the detected value. Therefore, in order to achieve the ability to take a picture without causing image shake even if camera shake occurs, first, it is necessary to accurately detect the camera vibration and secondly correct the optical axis change due to camera shake. Will be needed.

In principle, this vibration (camera shake) is detected by means of vibration detecting means for detecting angular acceleration, angular velocity, angular displacement, etc., and by integrating the output signal of the sensor electrically or mechanically. The camera shake detecting means for outputting the angular displacement can be mounted on the camera. And
The image blur can be suppressed by driving the correction optical mechanism that decenters the photographing optical axis based on the detection information.

Here, an outline of an anti-vibration system using vibration detecting means will be described with reference to FIG.

The example of FIG. 7 is a diagram of a system for suppressing an image blur caused by a camera vertical shake 81p and a horizontal shake 81y in a direction indicated by an arrow 81.

In the figure, reference numeral 82 denotes a lens barrel, 83p, 83
y is a vibration detecting means for detecting a camera vertical vibration and a camera horizontal vibration, respectively.
This is indicated by 84y. 85 is a correction (optical) means (86
p and 86y are coils for applying thrust to the correction means 85,
86p and 86y are position detection elements for detecting the position of the correction means 85), and the correction means 85 is provided with a position control loop described later, and is driven with the outputs of the vibration detection means 83p and 83y as target values, The stability on the image plane 88 is secured.

FIG. 8 is an exploded perspective view showing the structure of a correction means that is preferably used for this purpose.
This structure will be described with reference to FIG.

The rear protruding ears 71a [3 places (1 place is hidden and not visible)] of the main plate 71 (enlarged view in FIG. 10) are fitted to a lens barrel (not shown), and a known lens barrel roller or the like is bored. It is screwed to 71b and fixed to the lens barrel.

The second yoke 72, which is a magnetic material and has been subjected to selective plating, is provided with a screw penetrating the hole 72a to form a hole 7 in the main plate 71.
1c. The second yoke 72 has a permanent magnet (shift magnet) 7 such as a neodymium magnet.
3 are magnetically attracted. Note that the magnetization direction of each permanent magnet 73 is the direction of the arrow 73a shown in FIG.

Coils 76p, 76 are provided on a support frame 75 (enlarged view in FIG. 11) to which a lens 74 is fixed by a C ring or the like.
y (shift coil) is patch-bonded (meaning a state in which it is forcedly pushed and bonded) (FIG. 11 is not bonded), and the light projecting elements 77p and 77y such as IRED are also attached to the back surface of the support frame 75. Bonded and slits 75ap, 75ay
The emitted light is incident on the position detection elements 78p and 78y such as PSD described later through.

FIG. 9 is a cross-sectional view of the correction means after assembly, and the assembly of the correction means will be described with reference to this drawing.

Support balls 79b (three places) such as ball bearings are temporarily fixed to the holes 75b 'of the support frame 75 by applying, for example, fluorine-based grease. In this state, return to FIG.
The L-shaped shaft 711 (nonmagnetic stainless material) is applied to the bearing portion 75d of the support frame 75 by applying grease, and the other end of the bearing portion 71d is formed on the base plate 71 (similarly applying grease).
Into the second yoke 72
And put the support frame 75 in the main plate 71.

After that, the charge spring 710 and the support ball 79a such as a ball bearing are assembled in the hole 75b of the support frame 75 in this order.

Next, for example, fluorine-based grease is applied to the bearing portion 75d of the support frame 75, and the L-shaped shaft 711 is applied here.
(Non-magnetic stainless steel) is inserted (see FIG. 8), and the other end of the L-shaped shaft 711 is a bearing 71 d formed on the base plate 71.
(Apply grease in the same way) and insert.

Next, the positioning holes 712a (3 places) of the first yoke 712 shown in FIG. 8 are fitted to the pins 71f (3 places) shown in FIG. 10 of the base plate 71, and the receiving surface 71e (also shown in FIG. 10). The first yoke 712 is received at five locations and magnetically coupled to the base plate 71 (by the magnetic force of the permanent magnet 73).

As a result, the back surface of the first yoke 712 abuts on the support ball 79a, and the support frame 75 is moved to the first position as shown in FIG.
It is sandwiched between the yoke 712 and the second yoke 72 to perform positioning in the optical axis direction.

Support balls 79a, 79b and first yoke 71
2. Fluoro-based grease is also applied to the contact surfaces of the second yoke 72 with each other, and the support frame 75 is freely slidable with respect to the base plate 71 in a plane orthogonal to the optical axis.

The charge spring 710 is the first yoke 72.
The lens 74 is charged by being sandwiched between the two, and the lens 74 is biased toward the second yoke 72 side to stabilize the position.

In the L-shaped shaft 711, the support frame 75 has a base plate 71.
On the other hand, it means that it is slidably supported only in the directions of arrows 713p and 713y, whereby the base plate 7 of the support frame 75 is supported.
Relative rotation (rolling) around the optical axis with respect to 1 is regulated.

Incidentally, the L-shaped shaft 711 and the bearing portions 71d, 7
The fitting backlash of 5d is set to be large in the optical axis direction, and the support balls 79a and 79b, the first yoke 712, and the second yoke 7 are provided.
This prevents overlapping with the optical axis direction regulation due to the clamping of 2.

An insulating sheet 714 is covered on the surface of the first yoke 712, and a hard substrate 715 having a plurality of ICs thereon (position detecting elements 78p and 78y, output amplifying ICs, coils 76p and 76y for driving). ICs) are fitted in the positioning holes 715a (two places) to the pins 71h (two places) shown in FIG. 10 of the main plate 71, and are screwed to the holes 715b, the holes 712b of the first yoke 712, and the holes 71g of the main plate 71. It

Here, the position detecting elements 78p and 78y are positioned on the hard board 715 by a tool and soldered, and the flexible board 716 for signal transmission also has a surface 716.
a is a range 715c surrounded by a broken line on the back surface of the hard substrate 715
(See FIG. 8).

A pair of arms 716bp and 716by extend from the flexible board 716 in a plane direction orthogonal to the optical axis, and hook portions 75ep and 7ep of the support frame 75 are respectively formed.
5ey (see FIG. 11), and the light emitting element 77
The terminals p and 77y and the terminals of the coils 76p and 76y are soldered.

Thus, the light projecting element 77 such as IRED
The driving of p, 77y and the coils 76p, 76y is performed from the hard substrate 715 via the flexible substrate 716.

The arm portion 716 of the flexible substrate 716.
bp and 716by (see FIG. 8) are each provided with a bending portion 716c.
p, 716 cy, and the elasticity of the refraction reduces the load on the arms 716 bp, 716 by when the support frame 75 moves around in a plane perpendicular to the optical axis.

The first yoke 712 has a protruding surface 712c formed by die cutting, and the protruding surface 712c is the insulating sheet 71.
4 through the hole 714a and is in direct contact with the hard substrate 715. A ground (GND: ground) pattern is formed on the hard board 715 side of this contact surface, and the first yoke 71 is screwed to the ground board to connect the hard board 715 to the ground plate.
Numeral 2 is grounded to prevent an antenna from giving noise to the hard substrate 715.

The mask 717 shown in FIG. 8 is positioned on the pin 71h of the base plate 71 and fixed on the hard substrate 715 with a double-sided tape.

The base plate 71 has a permanent magnet through hole 71i.
(See FIGS. 8 and 10) is opened, and the second from here
The back surface of the yoke 72 is exposed. The permanent magnet 718 (locking magnet) is incorporated in the through hole 71i, and is magnetically coupled to the second yoke 72 (see FIG. 9).

Lock ring 719 (FIGS. 8, 9 and 12)
(Refer to FIG. 13), the coil 720 (locking coil) is bonded, and the bearing 719b (see FIG. 13) is provided on the back surface of the ear 719a of the lock ring 719.
1 (see FIG. 8), the armature rubber 722 is passed through, the armature pin 721 is passed through the bearing 719b, and then the armature spring 723 is passed through the armature pin 721, and the armature 724 is fitted and fixed by caulking.

Therefore, the armature 724 opposes the charging force of the armature spring 723 and acts on the lock ring 71.
9 can slide in the direction of arrow 725.

FIG. 13 is a plan view of the correcting means after the assembly is completed, as viewed from the back side of FIG. 8. In this figure, the outer diameter cutouts 719c (three places) of the lock ring 719 are connected to the inner diameter of the main plate 71. The lock ring 719 is attached to the main plate 71 by a known bayonet connection in which the lock ring 719 is pushed into the main plate 71 in accordance with the projections 71j (three places), and then the lock ring is rotated clockwise to prevent the lock ring from coming off.

Therefore, the lock ring 719 is rotatable about the optical axis with respect to the base plate 71. However, the lock ring 719 rotates, and the notch 719 c again
In order to prevent the bayonet connection from being disengaged, the lock rubber 726 (see FIGS. 8 and 13) is press-fitted into the main plate 71 so that the lock ring 719 is locked.
The angle θ of the notch 719d regulated by the angle 26 (see FIG. 13)
(See Reference).

A permanent magnet 718 (locking magnet) is also attached to the magnetic locking yoke 727 (see FIG. 8), and its holes 727a (two places) are fitted to the pins 71k (see FIG. 13) of the main plate 71. And then fit, hole 727b
(2 places) and 71n (2 places).

The permanent magnet 718 on the main plate 71 side, the permanent magnet 718 on the locking yoke 727 side, and the second yoke 7
2. A known closed magnetic path is formed by the locking yoke 727.

Further, the lock rubber 726 is prevented from coming off by screwing a lock yoke 727. In FIG. 13, the lock yoke 727 is omitted for the above description.

Hook 719e of the lock ring 719
A lock spring 728 is hung between the hook 71m of the base plate 71 and the hook 71m (see FIG. 13), and urges the lock ring 719 clockwise. The suction coil 730 is inserted into the suction yoke 729 (see FIGS. 8 and 13), and
It is screwed together by one hole 729a.

Terminal of coil 720 and adsorption coil 730
The terminal of the flexible substrate 716 has a twisted pair configuration of, for example, a four-stranded tetron covered wire.
Soldered to d.

The IC 731p on the hard substrate 715,
731y is an IC for amplifying the output of the position detection terminals 78p and 78y, respectively, and its internal configuration is as shown in FIG. 19 (since the ICs 731p and 731y have the same configuration, only 731p is shown here).

In FIG. 14, the current-voltage conversion amplifier 7
31 ap and 731 bp convert the photocurrents 78i1p and 78i2p generated in the position detecting element 78p (consisting of the resistors R1 and R2) by the light projecting element 77p into a voltage, and the differential amplifier 7
31cp is each current-voltage conversion amplifier 731ap, 731
The difference output of bp is obtained and amplified.

The light emitted from the light projecting elements 77p and 77y is incident on the position detecting elements 78p and 78y via the slits 75ap and 75ay as described above, but the support frame 75 is in a plane perpendicular to the optical axis. When it moves, the position detecting element 78p,
The position of incidence on 78y changes.

The position detecting element 78p has sensitivity in the direction of the arrow 78ap (see FIG. 8), and the slit 75a
Since p has a shape in which the light beam spreads in a direction (78ay direction) orthogonal to the arrow 78ap and the light beam is narrowed in the direction of the arrow 78ap, the position detecting element is only used when the support frame 75 moves in the arrow 713p direction. 78p photocurrent 78i ₁ p, 7
The balance of 8i ₂ p changes, and the differential amplifier 731cp outputs according to the direction of the arrow 713p of the support frame 75.

Further, the position detecting element 78y has detection sensitivity in the direction of arrow 78ay (see FIG. 8), and the slit 75ay has a shape extending in the direction (78ap direction) orthogonal to the arrow 78ay. The position detection element 78y changes the output only when it moves in the direction of the arrow 713y.

The adding amplifier 731dp obtains the sum of the outputs of the current-voltage converting amplifiers 731ap and 731bp (the total amount of light received by the position detecting element 78p), and the drive amplifier 731ep receiving this signal drives the light projecting element 77p accordingly.

Since the light projecting element 77p changes its light projecting amount extremely unstablely with respect to temperature and the like, the absolute amount (78) of the photocurrents 78i ₁ p, 78i ₁ p of the position detecting element 78p is accordingly changed.
i ₁ p + 78i ₂ p) changes. Therefore, the support frame 75
The output of the differential amplifier 731cp a showing the position _{(78i 1 p-78i 2 p} ) also changes.

However, if the light projecting element 77p is controlled by the above-mentioned drive circuit so that the total amount of received light becomes constant as described above, there will be no change in the output of the differential amplifier 731cp.

The coils 76p and 76y shown in FIG. 8 are located in a closed magnetic circuit formed by the permanent magnet 73, the first yoke 712 and the second yoke 72, and the support frame 75 is formed by passing a current through the coil 76p. The support frame 75 is driven in the arrow 713p direction (known Fleming's left-hand rule), and the support frame 75 is driven in the arrow 713y direction by passing a current through the coil 76y.

In general, the outputs of the position detecting elements 78p and 78y are amplified by ICs 731p and 731y, and when the coils 76p and 76y are driven by the outputs, the support frame 75 is driven to change the outputs of the position detecting elements 78p and 78y. Becomes

Here, when the driving direction (polarity) of the coils 76p and 76y is set to a direction in which the outputs of the position detecting elements 78p and 78y become smaller (negative feedback), the coils 76p and 7y.
The support frame 75 is stabilized at a position where the outputs of the position detecting elements 78p and 78y become substantially zero by the driving force of 6y.

Such a method of performing negative feedback of the position detection output for driving is called a position control method. For example, when a target value (for example, a camera shake angle signal) is mixed into the ICs 731p and 731y from the outside, the support frame 75 is set to the target. Drives very faithfully according to value.

Actually, the differential amplifiers 731cp and 731c
The output of y is sent to the main substrate (not shown) via the flexible substrate 716, where analog-digital conversion (A / D conversion) is performed and the result is captured by the microcomputer.

In the microcomputer, the target value (camera shake angle signal) is appropriately compared and amplified, and phase advance compensation (to stabilize the position control) by a known digital filter method is performed, and then the flexible board 716 is passed again. IC7
32 (for driving the coils 76p and 76y). IC
732 indicates the coils 76p and 76 based on the input signal.
y is driven by a known PWM (pulse width modulation) to drive the support frame 75.

As described above, the support frame 75 has the arrow 713p,
It is slidable in the 713y direction, and the position is stabilized by the position control method described above. However, in consumer optical devices such as cameras, the support frame 75 is always controlled from the viewpoint of preventing power consumption. I can't keep it.

Further, since the support frame 75 can freely move around in the plane orthogonal to the optical axis in the non-controlled state, countermeasures against noise generation and damage at the stroke end at that time are taken. You need to do it.

As shown in FIGS. 11 and 13, three protrusions 75f radially protruding are provided on the back surface of the support frame 75, and the tips of the protrusions 75f are the inner circumference of the lock ring 719 as shown in FIG. It is fitted to the surface 719g. Therefore, the support frame 75 is restrained in all directions with respect to the main plate 71.

The lock ring 71 is shown in FIGS.
9 is a plan view showing the relationship between the operation of the support frame 9 and the support frame 75.
FIG. 3 is a diagram in which only essential parts are extracted from the plan view of FIG. Note that the layout is slightly changed from the actual assembled state to make the description easy to understand. In addition, the cam 719f (3
As shown in FIGS. 9 and 12, the lock ring 71
Since it is not provided over the entire area of the cylinder 9 in the generatrix direction, it cannot be seen from the direction of FIG. 15, but is shown for the sake of explanation.

As shown in FIG. 9, the coil 720 (720
a is a not-shown flexible substrate or the like and a lock ring 71.
9, the flexible substrate 7 from the terminal 719h.
The four-stranded wire connected to the terminal 716 e on the stem 716 d of the sixteen is in a closed magnetic path sandwiched by permanent magnets 718, and the current flows through the coil 720 to cause the lock ring 719 to move the optical axis. Generates torque to rotate around.

The coil 720 is also driven by a hard board 71 via a flexible board 716 from a microcomputer (not shown).
5 is controlled by a command signal input to the driving IC 733 on the IC 5, and the IC 733 performs PWM driving of the coil 720.

In FIG. 15A, the winding direction of the coil 720 is set so that a counterclockwise torque is generated in the lock ring 719 when the coil 720 is energized.
Accordingly, the lock ring 719 rotates counterclockwise against the spring force of the lock spring 728.

The lock ring 719 is composed of the coil 720.
Before power is supplied to the lock rubber 72, the force of the lock spring 728 is used.
6 and stable.

When the lock ring 719 rotates, the armature 724 comes into contact with the attraction yoke 729 to contract the armature spring 723, and the positional relationship between the attraction yoke 729 and the armature 724 is equalized to lock the lock ring 719.
Stops the rotation as shown in FIG.

FIG. 16 is a timing chart of the lock ring drive.

The coil 720 is energized (PWM drive indicated by 720b) at the same time as the arrow 719i in FIG. 16 and at the same time the energization magnet 730 is energized (730a). Therefore, the armature 724 comes into contact with the suction yoke 729 and, when equalized, the armature 724 is moved to the suction yoke 729.
Is adsorbed on.

Next, when the coil 720 is de-energized at the time indicated by 720c in FIG. 16, the lock ring 719 tries to rotate clockwise by the force of the lock spring 728.
Since the armature 724 is adsorbed by the adsorption yoke 729 as described above, the rotation is restricted. At this time, since the protrusion 75f of the support frame 75 is located at a position facing the cam 719f (the cam 719f rotates), the support frame 75 can move by the clearance between the protrusion 75f and the cam 719f.

For this reason, the support frame 75 falls in the direction of gravity G [see FIG. 15 (b)].
Since the support frame 75 is also in the control state at the time of 19i, it does not fall.

The support frame 75 is the lock ring 71 when not controlled.
9, but actually has a play corresponding to the fitting play between the projection 75f and the inner peripheral wall 719g. That is, the support frame 75 falls in the direction of gravity G by this amount of backlash, and the center of the support frame 75 and the center of the main plate 71 are displaced.

Therefore, from the time point of arrow 719i, for example, 1
It takes a second to slowly move to the center of the base plate 71 (center of the optical axis).

When this is suddenly moved to the center, the lens 7
This is because the photographer feels the image shake through 4 and is uncomfortable, and even if exposure is performed during this period, the image deterioration due to the movement of the support frame 75 does not occur. (Eg 1/8
(The support frame is moved by 5 μm in seconds.) Specifically, the outputs of the position detection elements 78p and 78y at the time point of arrow 719i in FIG. 16 are stored, the control of the support frame 75 is started with the value as a target value, and then the second frame is spent for 1 second. And moves to a target value when the center of the optical axis is preset (see 75g in FIG. 16).

After the lock ring 719 is rotated (unlocked state), based on the target value from the vibration detecting means (overlapped with the above-mentioned center position movement operation of the support frame 75).
The support frame 75 is driven, and the image stabilization starts.

Here, when the image stabilization is turned off at the time of arrow 719j to end the image stabilization, the target value from the vibration detection means is not input to the correction means, and the support frame 75 is controlled to the center position and stops. At this time, the power supply to the attraction coil 730 is stopped (730b). Then, the attraction force of the armature 724 by the attraction yoke 729 disappears, and the lock ring 719 is rotated clockwise by the lock spring 728 to return to the state of FIG. At this time, the lock ring 719 is in contact with the lock rubber 726 and its rotation is restricted, so that the collision sound of the lock ring 719 at the end of the rotation can be suppressed small.

After that (for example, after 20 msec), the control of the correction means is cut off, and the timing chart of FIG. 16 ends.

FIG. 17 is a block diagram showing the outline of the image stabilization system.

In FIG. 17, reference numeral 91 denotes the vibration detecting means 83p and 83y of FIG. 8, which is a shake detecting sensor for detecting an angular velocity of a vibration gyro and the DC component of the output of the shake detecting sensor is cut and integrated to obtain an angular displacement. The sensor output calculation means for obtaining

The angular displacement signal from the vibration detecting means 91 is input to the target value setting means 92. The target value setting means 92 is a variable differential amplifier 92 a and a sample hold circuit 9.
2b, and a sample hold circuit 92b
Is always being sampled, the two signals inputted to the variable differential amplifier 92a are always equal and the output thereof is zero. However, when the sample-and-hold circuit 92b is put into a hold state by an output from a delay unit 93, which will be described later, the variable differential amplifier 92a starts outputting continuously with the time being zero.

The amplification factor of the variable differential amplifier 92a is variable by the output of the image stabilization sensitivity setting means 94. The reason is that the target value signal of the target value setting means 92 is a target value (command signal) for causing the correction means to follow, but the correction amount of the image plane (the image stabilization sensitivity) with respect to the driving amount of the correction means is zoom and focus. This is to compensate for the change in the image stabilization sensitivity because it changes depending on the optical characteristics based on the change in focus.

Therefore, the image stabilization sensitivity setting unit 94 receives the zoom focal length information from the zoom information output unit 95 and the focus focal length information based on the distance measurement information of the exposure preparation unit 96, and based on the information The variable differential amplifier 92a of the target value setting means 92 is calculated by calculating the vibration sensitivity or extracting the vibration isolation sensitivity information that is set in advance based on the information.
Change the amplification factor of.

The correction driving means 97 are ICs 731p, 731y, 732 mounted on the hard board 715, and the target values from the target value setting means 92 are command signals 730p, 732.
It is input as 30y.

The correction starting means 98 is a switch for controlling the connection between the IC 732 on the hard board 715 and the coils 76p and 76y. Normally, by connecting the switch 98a to the terminal 98c, each of the coils 76p and 76y is connected. When both ends are short-circuited and the signal of the logical product means 99 is input, the switch 98a is connected to the terminal 98b, and the correction means 910 is connected.
Control state (the shake correction is not performed yet, but the coil 76
Power is supplied to p, 76y, and the position detection elements 78p, 78
The correction means 910 is stabilized at a position where the y signal becomes substantially zero). At the same time, the output signal of the logical product means 99 is also input to the locking means 914, whereby the locking means unlocks the correcting means 910.

The correction means 910 is the position detecting element 7
The position signal of 8p, 78y is input to the correction driving means 97,
Position control is performed as described above.

When the logical product means 99 receives both the release half-press SW1 signal of the release means 911 and the output signal of the image stabilization switching means 912, the AND gate 99a, which is a component thereof, outputs the signal. That is, when the photographer operates the anti-vibration switch of the anti-vibration switching means 912 and the release means 911 presses the release halfway, the correction means 9
10 is unlocked and is in control.

The SW1 signal of the release means 911 is input to the exposure preparation means 96, whereby photometry, distance measurement, and lens focusing drive are performed, and as described above, the image stabilization sensitivity setting means 94 is provided with focus focal length information. Is entered.

The delay means 93 receives the output signal of the logical product means 99, outputs it after one second, for example, and causes the target value setting means 92 to output the target value signal as described above.

Although not shown, the vibration detecting means 91 also starts to operate in synchronization with the SW1 signal of the release means 911. As described above, the sensor output calculation including the large time constant circuit such as the integrator requires a certain period of time from the start until the output is stabilized.

The delay means 93 is the vibration detecting means 91.
After waiting until the output of the vibration detector 1st stabilizes, it plays the role of outputting the target value signal to the correction means 910, and starts the vibration isolation after the output of the vibration detection means 91 stabilizes.

The exposure means 913 performs mirror up by the release push-off SW2 signal input of the release means 911, opens and closes the shutter at the shutter speed obtained based on the photometric value of the exposure preparation means 96, and exposes the mirror down. Then, the shooting ends.

After the photographing, the photographer releases the shutter 911.
When the hand is released and the SW1 signal is turned off, the logical product means 99 stops the output, the sample hold circuit 92b of the target value setting means 92 enters the sampling state, and the output of the variable differential amplifier 92a becomes zero. Therefore, the correction means 91
0 returns to the control state in which the correction drive is stopped.

Since the output of the logical product means 99 is turned off, the locking means 914 locks the correction means 910, and then the switch 98a of the correction starting means 98 is connected to the terminal 98c, and the correction means 910 Get out of control.

The vibration detecting means 91 continues to operate for a fixed time (for example, 5 seconds) after the operation of the release means 911 is stopped by a timer (not shown), and then stops.
This is because the photographer frequently performs the release operation after the release operation is stopped, so that it is possible to prevent the vibration detection unit 91 from being activated every time in such a case, and to shorten the standby time until the output is stabilized. Vibration detection means 9
When 1 is already activated, the vibration detecting means 91 sends an activated signal to the delay means 93 to shorten the delay time.

[0091]

The support balls 79a and 79b and the charge spring 710 are arranged as shown in FIG. 9 because the left side of the paper surface of FIG. With the support ball 79b that can be temporarily fixed down,
This is to prevent the charge spring 710 and the support balls 79a from moving upward when assembled, and to prevent them from falling. By attaching the first yoke 712, the support balls 79a,
9b, the charge spring 710 does not come off from the support frame 75.

The charge force of the charge spring 710 is equal to or greater than the weight of the support frame 75 and the lens 74 due to the resultant force at the three places. The yoke 72 is urged to stabilize the optical system.

However, if the charge force of the charge spring 710 is increased to support the own weight of the lens 74 at one location, the first yoke 71 that abuts the support balls 79a and 79b.
The sliding friction between the second yoke 72 and the second yoke 72 increases, and smooth sliding cannot be performed.

Therefore, it is desired to set the charging force of the charge spring 710 to withstand the own weight of the lens 74 with the total force at the three points, and to set the bending force at the one point so that the lens 74 bends under its own weight.

FIG. 9 shows the inner peripheral wall 719 of the lock ring 719.
g and the projection 75f of the support frame 75 are disengaged, the support frame 75 is in a state in which vibration control is possible, and the support frame 75 is properly clamped to the main plate 71.

Here, the support frame 75 is the lock ring 719.
FIG. 18 shows a cross section when locked by.

At this time, the total center of gravity G of the support frame 75 and the lens 74 is at the position shown in the figure, and a force due to gravity is received from this position to the lower side of the paper surface of FIG. The position (locking portion) where the lock ring 719 supports the support frame 75 is indicated by the arrow 6
As shown in FIG. 2, since it is on the right side of the drawing with respect to the center of gravity, the support frame 75 has an arrow 6 centered on the sliding surface of the support ball 79b of arrow 61.
Couples are generated in three directions.

If the projections 75f of the support frame 75 are firmly fitted (engaged) with the inner peripheral wall 719g of the lock ring 719 at all three places, the above-mentioned generated couple force has no influence on the support frame 75. Absent.

However, the protrusion 7 of the support frame 75 is actually used.
There is some play between the 5f and the inner peripheral wall 719g of the lock ring 719.

Because the support frame 75 is attached to the lock ring 7
This is because if the lock ring 719 is firmly fitted into the lock ring 19, the rotation load of the lock ring 719 will increase when the lock is unlocked next time.

Therefore, in the state of FIG. 18, the protrusion 75f at the position of the arrow 62 and the inner peripheral wall 719g are in contact with each other (due to gravity), but the other two protrusions 75f are not in contact with the inner peripheral wall 719g. In such a case, if a couple is generated in the direction of the arrow 63 shown in FIG. 10, the tilt of the lens 74 due to this couple cannot be stopped. That is, as described above, since the charge force per charge spring 710 is weak, the charge spring 710 is bent by a couple force, and the support ball 79a sinks into the support frame.

That is, there is a problem that the optical performance when the correction means is unlocked and controlled while the image stabilization is on and the optical performance when the correction means is locked when the image stabilization is off changes. there were.

(Object of the Invention) A first object of the present invention is to provide a correction optical device capable of eliminating a change in optical performance during vibration isolation and non-vibration isolation.

A second object of the present invention is that when the device is carried or when a shock is applied, the elastic means bends and the correction means sinks. Of the elastic means cannot be completely returned to the position, and the urging force of the elastic means can be adjusted so that the correction means can slide smoothly during the anti-vibration control. It is an object of the present invention to provide a correction optical device capable of satisfying both of the above setting and setting.

[0105]

In order to achieve the first object, the present invention according to claims 1 to 4 receives a couple generated due to the positional relationship of the center of gravity of the correcting means for eccentricizing the optical axis. A limiting unit is provided, and the limiting unit receives the couple generated due to the positional relationship of the center of gravity of the correction unit, and prevents the correction unit from tilting (with respect to the direction orthogonal to the optical axis) due to the couple.

Specifically, it comprises a sandwiching means for sandwiching the correcting means slidably only in a direction orthogonal to the optical axis with respect to the fixing member, and the sandwiching means are mutually orthogonal to the optical axis of the fixing member. The fixed sliding means, which is charged between the first and second planes separated from each other, is fixed or integrated with the correction means and slides on the first plane, and which constitutes the limiting portion, and A movable sliding means that slides on the second plane and is movable in the optical axis direction with respect to the correction means, and an elastic means that urges the movable sliding means with respect to the correction means. When the locking portion of the locking means for locking the correcting means so that the shaft is not eccentric is on the optical axis image plane side with respect to the position of the center of gravity and the correcting means is supported in the inverted pendulum state, Each plane of the fixed member faces the optical axis from the image side to the object side. , The second plane and the first plane are arranged in this order, the locking portion is on the optical axis object side with respect to the position of the center of gravity, and when the correcting means is supported in the inverted pendulum state, The planes of the fixing member are arranged such that the first plane and the second plane are arranged in this order from the image plane side toward the object side optical axis direction, or the correction means is provided so that the optical axis is not decentered. When the locking portion of the locking means for locking the optical axis is on the optical axis image plane side with respect to the center of gravity and the correction means is supported in a suspended state, each flat surface of the fixing member is on the image plane side. From the object side to the optical axis direction on the object side, the first plane and the second plane are arranged in this order, and the locking portion is on the optical axis object side with respect to the position of the center of gravity. In the case of supporting in a suspended state, each plane of the fixing member is a second plane from the image side toward the object side in the optical axis direction. When the correction means is supported in an inverted pendulum state, the fixed sliding means forming the limiting portion is located on the opposite side of the locking portion from the center of gravity. When the correction means is provided in a suspended state, the fixed sliding means forming the limiting portion is provided on the locking portion side, and the limiting portion causes a positional relationship of the center of gravity of the correcting means. Prevent the generation of couples,
The couple is prevented from tilting due to the couple.

Also in order to achieve the first object,
According to a seventh aspect of the present invention, the relationship between the position where the driving force of the driving unit that drives the correction unit is generated and the position of the center of gravity of the correction unit,
Alternatively, a limiting portion that receives a couple generated due to the position of the center of gravity of the locking means and the correction means is provided, and the limiting portion receives the couple generated due to the positional relationship of the center of gravity of the correction means, and the couple generates the The correction means prevents the inclination (with respect to the direction orthogonal to the optical axis) from occurring.

Further, in order to achieve the above second object,
The present invention according to claims 5 and 6 comprises a holding means for holding the correcting means slidably in a direction orthogonal to the optical axis, and the holding means urges the correcting means toward the optical axis object. I have to.

Specifically, the holding means charged and housed between the first and second planes orthogonal to the optical axis and separated from each other is fixed to or integrated with the correction means.
Fixed sliding means that slides on the flat surface, movable sliding means that slides on the second flat surface and is movable in the optical axis direction with respect to the correction means, and the movable sliding means is the correction means. The first flat surface is arranged on the optical axis object side and the second flat surface is arranged on the optical axis image plane side, that is, fixed sliding means on the optical axis object side. Are arranged so that

[0110]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will now be described in detail based on the illustrated embodiments.

FIG. 1 is an exploded perspective view of a correction optical device according to a first embodiment of the present invention. What is different from FIG. 8 of the prior art is the shape of support balls 79a and 79b and the support into which they are inserted. It is the hole 75b of the frame 75. Therefore, in this embodiment, the support balls 79A and 79B are used, and the hole 75b is formed by 75B.
Will be shown as. The supporting balls 79A, 79 are shown in FIG.
B is shown enlarged.

The new support balls 79A and 79B are, for example, PO
As shown in FIG. 2, the blade portions 79Aa, 7 are formed of M or the like.
9Ba is installed with a phase difference of 90 degrees from each other.

FIG. 3 and FIG. 4 are views showing the details of the cross section, the support balls 79A and 79B, and the holes 75B after the correction means is assembled. The support balls 75B (three places) of the support frame 75 have the above support balls. 79A, 79B and charge spring 710 are inserted,
As shown in FIG. 3 and FIG. 4, the support ball 79A is fixed to the support frame 75 by heat caulking (the support ball 79B is slidable in the extending direction of the hole 75B against the spring force of the charge spring 710). is there).

More specifically, the support sphere 79B, the charged charge spring 710, and the support sphere 79A are sequentially inserted into the hole 75B of the support frame 75 in the direction of the arrow 79c (the support spheres 79A and 79B have the same shape). Finally, the peripheral end portion 75C of the hole 75B is thermally caulked to prevent the support ball 79A from coming off. In addition, A to D of FIG. 4B show the depth of each contact portion formed in the hole 75B.

As described above, the support frame 75 has the support balls 79A,
Since 79B and the charge spring 710 are set in a pre-charged state, there will be no problem of dropping the parts during subsequent assembly.

As can be seen from FIGS. 3 and 4, since the support ball 79A is fixed to the support frame 75, the support frame 7
5 is locked by the lock ring 719, and even if a couple acts in the direction of the arrow 63 as shown in FIG.
5, that is, the lens 74 does not tilt.

As described above, the charge spring is provided by providing the limiting portion (supporting ball 79A fixed to the supporting frame 75 in FIG. 3) which receives a couple generated due to the positional relationship between the center of gravity of the correcting means and the locking portion. Support frame 7 without increasing the charging power of 710
The inclination of No. 5 could be prevented, and the slidability of the correction means and the optical stability could both be achieved.

In FIG. 3, a mask 71 is provided on the left side of the drawing.
7 is attached, and this direction is the object side of the photographing optical axis.

Therefore, the support frame 75 is biased by the charge spring 710 toward the object side of the photographing optical axis with respect to the base plate 71. And this has the following advantages.

As described above, the total charge force of the charge springs 710 has a force sufficient to support the weight of the support frame 75 and the lens 74, but it does not have much margin. Therefore, when the photographing lens is oriented in the direction in which the charge spring 710 is bent and an impact is applied in that direction in that state, the charge spring 710 flexes at that moment.

The support frame 75 is in contact with the inner peripheral wall 719g of the lock ring 719 by the projection 75f when vibration isolation is not performed, and friction is generated in this portion.

Therefore, there is a possibility that the charge spring 710 will bend and the support frame 75 will not return to its original position sufficiently when it is restored to its original position.

Considering the state of carrying the lens around, it is common to wear it on the camera body and carry the strap of the camera body around the shoulder of the photographer, and at this time, the photographing optical axis of the lens is on the lower side (ground surface). Side). To put it the other way around, carry the lens up (toward the sky), and
It is rare to use.

In the conventional example as shown in FIG. 9, when the camera is carried around, a force (self-weight and impact force) is applied to the support frame 75 toward the object side, whereby the charge spring 71.
0 may bend.

After that, even if the photographer aims the object with the lens horizontal, the support frame 75 may not be sufficiently returned to its original position (optical performance is not stable).

However, when the layout is such that the support frame 75 is biased toward the photographing optical axis object side (that is, the ground side when carrying around) as shown in FIG. 3, the charge spring 710 does not bend when carrying around, so that the above-mentioned structure is adopted. Such problems do not occur.

(Second Embodiment) FIG. 5 is a diagram showing a configuration of a main part according to a second embodiment of the present invention. What is different from the example described so far is the correction means. This is a locking method, in which the lock ring 719 is inserted into the inner diameter of the support frame 75, and the outer peripheral wall 719g of the lock ring 719 and the support frame 75.
The projection 75f is in contact with and locked.

Therefore, in the gravitational state of FIG. 5, the lock ring 719 supports the support frame 75 in a suspended state at the portion indicated by the arrow 42 (in FIG. 18, the lock frame 719 abuts at the portion indicated by the arrow 62 to support the support frame 75). Is supported in an inverted pendulum state).

At this time, it is the support ball 79A (the first flat surface 4) of the arrow 41 that receives a large force by the couple in the direction of the arrow 63.
4 which is a member which comes into contact with and slides with the support ball 79A.
By fixing the (fixed sliding means) to the support frame 75 and charging the support ball 79B (movable sliding means; a member that slides in contact with the second plane 43) on the opposite side with the charge spring 710. It is possible to prevent the support frame 75 from falling when locked.

As described above, whether the correction means is locked in the inverted pendulum state or in the suspended state,
In addition, the urging direction of the support frame 75 with respect to the base plate 71 can be determined by the positional relationship between the center of gravity and the position of the locking portion at that time to stabilize the optical performance. Conversely, in consideration of carrying the lens around. To determine the biasing direction of the support frame 75, determine the positional relationship between the center of gravity and the locking portion, and the locked state (inverted pendulum or hanging) based on that direction to stabilize the optical performance. Can be done.

(Third Embodiment) In the above-described embodiments, it is premised that the thrust (driving force) generating positions of the coils 76p and 76y and the center of gravity of the correcting means are substantially at the same position. I have stated.

However, due to design restrictions, it is not always possible to match the driving force generating positions of the coils 76p and 76y (driving means) with the barycentric position. In such a case, a couple force is applied to the correction means due to the positional relationship between the driving force generation position and the center of gravity driving force.

Consider the relationship between the position of the driving means and the urging direction of the support frame 75 at this time.

In FIG. 6, the coil 76p (driving means) is on the left side of the drawing with respect to the center of gravity, and the correction means is the coil 7 during control.
It becomes a suspension support state by 6p. Therefore, the support ball 79A indicated by the arrow 46 receives the greatest force of the couple 51 generated due to the positional relationship with the center of gravity.
Is fixed to the support frame 75 (the support frame 75 is biased to the left in the drawing)
By doing so, it is possible to stabilize the optical performance.

Next, when the coil 76p is attached to the lower side of the optical axis in FIG. 6, the correcting means is in the inverted pendulum supporting state during control, and a large couple is applied to the supporting ball 79B indicated by the arrow 47. Therefore, the support ball 79B is fixed to the support frame 75, and when the coil 76p is on the right side of the center of gravity and above the optical axis, a large couple is applied to the arrow 48, and the coil 76p
When p is on the right side of the center of gravity and below the optical axis, a large couple is applied to the support ball 79A indicated by the arrow 49.
The optical performance can be stabilized by fixing A to the support frame 75.

As described above, the position of the driving means (right, left from the center of gravity,
Above and below the optical axis) and the position of the locking part (right, left from the center of gravity,
The inverted pendulum lock and the suspension lock can change the biasing direction of the support frame 75 to stabilize the optical performance, but considering the above-mentioned stability when carrying around,
A desirable combination of the position of the drive means and the position of the locking portion of the locking means when the support frame 75 is biased toward the photographing optical axis object side with respect to the main plate 71 will be obtained.

A) The position of the driving means is the object side of the photographing optical axis from the center of gravity, the suspension of the correcting means coincident with the center of gravity, or the side of the photographing optical axis image surface side of the center of gravity, or the inversion of the correcting means coincident with the center of gravity. Any position of pendulum support.

B) The position of the locking portion of the locking means is also on the object side of the photographing optical axis from the center of gravity, or on the hanging locking of the correcting means which coincides with the center of gravity, or on the image plane side of the photographing optical axis from the center of gravity or coincides with the center of gravity. Any position of the inverted pendulum support of the correction means.

With the above layout, stabilization of the optical performance can be realized without impairing the vibration isolation performance (sliding property) of the correction means.

According to each of the above embodiments, the following effects are obtained.

1) By providing a limiting portion that receives a couple generated due to the positional relationship between the center of gravity of the correction means and the locking portion of the locking means,
The optical performance can be stabilized, and more specifically, when the locking portion is on the imaging optical axis image plane side from the center of gravity and the correcting means is locked by the inverted pendulum (in the case of the first embodiment), or the locking portion is When the object is on the object side of the photographing optical axis from the center of gravity and is locked by hanging (the opposite of the case of the second embodiment), the correction means is biased to the object side of the photographing optical axis, and the locking portion is photographed from the center of gravity. When the correction means is on the image plane side of the optical axis and is suspended and locked (in the case of the second embodiment),
Alternatively, when the locking portion is on the object side of the photographing optical axis with respect to the center of gravity and the inverted pendulum is locked (in the opposite case of the first embodiment)
By biasing the correcting means toward the image plane of the photographing optical axis, it was possible to prevent the deterioration of the optical performance due to the lens tilt when the correcting means is locked.

2) Stabilizing the optical performance by providing a limiting portion that receives a couple generated due to the relationship between the center of gravity of the correction means and the drive position of the drive means, and more specifically, the drive means is closer to the photographing optical axis object side than the center of gravity. When the correction means is suspended and supported, or when the drive means is on the image plane side of the photographing optical axis from the center of gravity and supports the inverted pendulum, the correction means is biased toward the photographing optical axis object side, and the drive means is moved to the center of gravity. When the photographing optical axis is closer to the image plane side, or the driving means is closer to the photographing optical axis object side than the center of gravity and the inverted pendulum is supported, the correcting means is biased toward the photographing image plane side to correct the correcting means. It was possible to prevent deterioration of optical performance due to lens tilt during control.

3) Further considering the carrying around of the lens, the correction means is urged toward the object side of the photographing means so as to sandwich it, whereby the optical performance can be always stabilized.

(Correspondence between Invention and Embodiment) In each of the above-described embodiments, the support ball 79A (or 79B) corresponds to the limiting portion of the present invention, and the support ball 79A and the charge spring 71 are provided.
0, the support balls 79B correspond to the holding means of the present invention, and the base plate 7
The first yoke 712 and the second yoke 72 correspond to the fixing member of the present invention, the support frame 75 and the lens 74 correspond to the correcting means of the present invention, and the coils 76p and 76y correspond to the driving means of the present invention. .

The support ball 79A (or 79B) corresponds to the fixed sliding means of the present invention, the support ball 79B (or 79A) corresponds to the movable sliding means, and the charge spring corresponds to the elastic means.

The above is the correspondence relationship between each configuration in the embodiments and each configuration of the present invention, but the present invention is not limited to the configurations of these embodiments, and the functions shown in the claims or It goes without saying that any structure may be used as long as the function of the embodiment can be achieved.

(Modification) In the present invention, as the vibration detecting means, an angular accelerometer, an accelerometer, an angular velocity meter, a speedometer, an angular displacement meter, a displacement meter, or a method for detecting the image shake itself is used. Anything that can be detected may be used.

In the present invention, the vibration detecting means and the correcting means can be separately provided in a plurality of devices which can be attached to each other, for example, a camera and an interchangeable lens which can be attached thereto.

In the present invention, each structure or a part of the structures of the claims or the embodiments may be provided in a separate device. For example, the vibration detection means may be provided in the camera body, the correction means may be provided in the lens barrel mounted in the camera, and the control means for controlling them may be provided in the intermediate adapter.

Further, although the present invention has been described as applied to a camera such as a single-lens reflex camera, a lens shutter camera, a video camera, etc., it may be applied to other optical devices and other devices, and also as a constituent unit. Is something that can be done.

[0151]

As described above, according to the present invention,
The limiting unit receives the couple generated due to the positional relationship of the center of gravity of the correction unit, and prevents the correction unit from tilting (with respect to the direction orthogonal to the optical axis) due to the couple.

Therefore, it is possible to eliminate the change in optical performance between the image stabilization and the image stabilization.

Further, according to the present invention, there is provided a holding means for holding the correcting means slidably in the direction orthogonal to the optical axis, and the holding means biases the correcting means toward the optical axis object side. I have to.

Therefore, when the device is carried or when an impact is applied, the elastic means bends and the correction means sinks, and when the device is used, the correction means can be completely returned to its original position depending on the bias of the elastic means. Both to prevent the influence on the subsequent image stabilization control and to set the biasing force of the elastic means to a weakness so that the correction means can slide smoothly during the image stabilization control. Can be satisfied.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a configuration of a correction optical device according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a structure of a support ball of FIG.

FIG. 3 is a cross-sectional view showing a state in which a support frame is incorporated in the main plate of FIG.

FIG. 4 is a diagram for explaining the shape of a hole of a support frame into which the holding means of FIG. 3 is inserted.

FIG. 5 is a cross-sectional view showing a main configuration of a correction optical device according to a second embodiment of the invention.

FIG. 6 is a cross-sectional view showing a main configuration of a correction optical device according to a second embodiment of the invention.

FIG. 7 is a perspective view showing a schematic configuration of a conventional anti-vibration system.

8 is an exploded perspective view showing the structure of the correction optical device in FIG.

9 is a cross-sectional view showing a state where a support frame is incorporated in the main plate of FIG.

FIG. 10 is a perspective view showing the main plate shown in FIG.

FIG. 11 is a perspective view showing the support frame shown in FIG.

12 is a perspective view showing the lock ring shown in FIG. 8. FIG.

13 is a front view showing the support frame and the like of FIG.

14 is a circuit diagram showing a configuration of an IC that amplifies an output of the position detection element of FIG.

FIG. 15 is a diagram showing a state of the ground where the lock ring of FIG. 8 is driven.

16 is a diagram showing signal waveforms at the time of lock ring driving in FIG.

FIG. 17 is a block diagram illustrating a circuit configuration of an image stabilizing system of a camera equipped with the image stabilizing system.

FIG. 18 is a sectional view illustrating a problem of the conventional correction optical device.

[Explanation of symbols]

 71 Base plate 72 Second yoke 74 Lens 75 Support frame 76p, 76y Coil 79A, 79B Support ball 710 Charge spring 712 First yoke

Claims (8)

[Claims] 1. A correction optical device including a limiting portion that receives a couple generated due to a positional relationship of a center of gravity of a correction unit that decenters an optical axis. 2. The correcting unit according to claim 1, wherein the limiting unit is provided in a holding unit that holds the correcting unit slidably only in a direction orthogonal to an optical axis with respect to a fixing member. Optical device. 3. The holding means is charged and housed between first and second planes which are orthogonal to the optical axis of the fixing member and are separated from each other, and are fixed or integrated with the correcting means. Fixed sliding means forming the limiting portion, which slides on a first plane, movable sliding means that slides on the second plane and is movable in the optical axis direction with respect to the correcting means, and the movable The sliding portion is composed of elastic means for urging the correcting means, and the locking portion of the locking means for locking the correcting means so that the optical axis is not eccentric, is locked to the center of gravity position. On the axial image side,
When the correcting means is supported in an inverted pendulum state, the fixing members are arranged such that the respective planes of the fixing member are in the order of the second plane and the first plane from the image plane side toward the object side optical axis direction. The locking portion is on the optical axis object side with respect to the center of gravity,
When the correcting means is supported in an inverted pendulum state, the fixing members are arranged such that the respective planes of the fixing member are in the order of the first plane and the second plane from the image plane side toward the object side optical axis direction. The correction optical device according to claim 2, wherein 4. The holding means is charged and housed between first and second flat surfaces which are orthogonal to the optical axis of the fixing member and are spaced apart from each other, and are fixed or integrated with the correcting means. A first fixed sliding means that slides on a first plane and forms the limiting portion; a second movable slide that slides on the second plane and that moves in the optical axis direction with respect to the correction means. Means and elastic means for urging the movable sliding means with respect to the correction means, and a locking portion of the locking means for locking the correction means so that the optical axis is not eccentric. It is on the optical axis image plane side with respect to the center of gravity,
When the correction means is supported in a suspended state, the fixing members are arranged such that the respective planes of the fixing member are in the order of the first plane and the second plane in the optical axis direction from the image plane side to the object side. Then
When the locking portion is on the optical axis object side with respect to the center of gravity and supports the correcting means in a suspended state, each plane of the fixing member faces from the image plane side to the object side optical axis direction. ,
3. The correction optical device according to claim 2, wherein the correction optical device is arranged so that the second plane and the first plane are arranged in this order. 5. A holding means for holding a correction means for eccentricizing the optical axis so as to be slidable in a direction orthogonal to the optical axis, and the holding means biases the correction means toward the object side of the optical axis. A correction optical device characterized in that 6. The holding means is charged and housed between first and second planes which are orthogonal to the optical axis and are spaced apart from each other, and are fixed or integrated with the correction means and the first plane. Fixed sliding means that slides with, movable sliding means that slides on the second plane and is movable in the optical axis direction with respect to the correcting means, and the movable sliding means with respect to the correcting means. 6. An elastic means for urging, wherein the first plane is arranged on the optical axis object side, and the second plane is arranged on the optical axis image plane side.
The correction optical device described. 7. A correcting means for eccentricizing an optical axis, a driving means for driving the correcting means, and a limit for receiving a couple force generated due to a relationship between a position where a driving force of the driving means is generated and a center of gravity of the correcting means. And a correction optical device having a section. 8. A correction means for eccentricizing an optical axis, a locking means for locking the correction means, and a limiting portion for receiving a couple generated due to the relationship between the locking means and the center of gravity of the correction means. Compensation optical device equipped.