JPH08304868A - Image blurring preventing device - Google Patents

Abstract

PURPOSE: To mount an optical element in the final stage of the assembling stage of a device so as to prevent the optical element from being damaged and stained by holding the optical element by a holding barrel and attaining holding barrel mounting structure where the holding barrel is attachably/ detachably mounted on the optical element mount part of a shake correction, means. CONSTITUTION: A correction lens 71 mounted in a supporting frame 72 is held by the cylindrical holding barrel 11, and the holding barrel 11 is inserted in the cylindrical mount part of the frame 72 and attachably/detachably attached to the frame 72 by 'click mounting' structure. Namely, in the case of attaching the lens 71 to the frame 72, the holding barrel 11 is pressed in the cylindrical holding barrel mount part 72a of the frame 72 by getting over the resistance of a pawl 72d from the front of the frame 72, so that the pawl 72d is engaged with the outer peripheral surface and the rear end of the holding barrel 11 so as to hold the holding barrel 11 not to fall. Thus, the optical element is mounted on the shake correction means in the final stage of the assembling stage of the image blurring preventing device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image blur prevention device (anti-vibration device) used in optical equipment such as cameras and observation equipment. More specifically, it is one of the components of the anti-vibration device. An image blur prevention device.

[0002]

2. Description of the Related Art Recently, a video camera and a still camera equipped with an anti-vibration device have been put on sale by manufacturers of electronic equipment and optical equipment in Japan including the applicant of the present invention. You can do it.

There are two types of anti-vibration devices mounted on the camera as already known. The first method is a method applied to a camera equipped with an image pickup device such as a CCD. The camera shake is indirectly detected from the output signal of the image pickup device and the shake correction is performed by electronically correcting the image signal. This is the method to do. The second method is a method in which the vibration of the camera is directly detected by the vibration detection sensor to optically correct the vibration.

A conventional example of a camera or a lens barrel as an optical device equipped with the image stabilizing device based on the above-mentioned second method will be described below.

As is well known, the anti-vibration device includes a vibration sensor for detecting angular displacement, angular acceleration, angular velocity, etc. of the optical device, and an image blur on the image plane based on the output of the sensor. It is composed of a shake correction means for correcting and a control means for controlling the vibration sensor and the shake correcting means.

FIG. 14 is a view for explaining the structure of a vibration isolator using an angular velocity meter as a vibration sensor, which is indicated by an arrow 81.
FIG. 9 is a principle diagram of an image stabilization device for suppressing image blur caused by vertical blur 81p and horizontal blur 81y. 82 in the figure
Is a lens barrel of the camera, 83p is an angular velocity meter for detecting a vertical shake angular velocity, 83y is an angular velocity meter for detecting a lateral shake angular velocity, 84p is a vertical direction detection output of the angular velocity meter 83p, 84p
y is a lateral detection output of the angular velocity meter 83y, 85 is a correction optical means, 86p and 86y are drive coils of the correction optical means 85, and 87p and 87y are positions for detecting the vertical and horizontal movements of the correction optical means 85. Sensor.

In the vibration isolator, the angular velocity meter 83p
And 83y detect blurring in the directions of 84p and 84y,
The drive coils 86p and 86y are controlled by a control circuit (not shown).
The correction optical means 85 is driven by controlling the current flowing through the image pickup device, and the image blur on the image plane 88 is corrected.

FIG. 15 shows a blur correction device in a conventional example of an optical device (interchangeable lens for a single-lens reflex camera) equipped with a vibration isolation device constructed on the basis of the vibration isolation principle described with reference to FIG. It is an exploded perspective view.

In the figure, reference numeral 710 designates the two angular velocimeters 8 described above on the outer peripheral surface of the front end portion (the end portion on the right side in FIG. 15).
3p and 83y (not shown) are fixed, and a lens barrel in which the lens group of the photographing optical system and the like are housed are fixed, and 72 is a correction lens 71 fixedly held and the rear end surface of the lens barrel 710 (in FIG. 15). The lens barrel 710 is disposed so as to face the left end surface) and is movable in parallel with a surface orthogonal to the optical axis.
The correction lens support frame (hereinafter simply referred to as a support frame) supported by the reference numeral 61 is a member for locking (locking) or unlocking (locking release) the support frame 72 so as not to move. Stopping means, 79p is a coil that is fixed to the support frame 72 and constitutes a pitch direction electromagnetic actuator that causes vertical movement in the support frame, and 79y is fixed to the support frame 72 and performs lateral movement in the support frame. A coil constituting a yaw direction electromagnetic actuator to be generated, and 62 is a lens barrel 7.
The three yokes 71 fixed to the concave portion 710yb on the rear end face of the coil 10 and arranged inside and outside the coil 79y.
A magnetic circuit unit for driving in the yaw direction, which is composed of 2y1 to 712y3 and two permanent magnets 713y sandwiched therebetween, 6
3 is fixed to the concave portion 710pb on the rear end surface of the lens barrel 710, and is sandwiched between three yokes 712p1 to 712p3 arranged inside and outside the coil 79p.
A magnetic circuit portion for driving in the pitch direction composed of a sheet of permanent magnets 713p, and 76y is a light emitting element (infrared light emission) of yaw direction position detecting means housed in a light emitting element housing case 72ya provided in the support frame 72. (Diode), 76p is the support frame 7
2, the light emitting element (infrared light emitting diode) 77y of the pitch direction position detecting means housed in the light emitting element housing case 72pa provided in FIG. A case lid having a power supply and control signal terminal to the optical element 76y is attached to a rear opening of the case 72pa, and a power supply and control signal terminal to the coil 79p and the light projecting element 76p is provided. A case lid 715p is attached to a hole 710pa opened at the rear end surface of the lens barrel 710 and has a light receiving element mask having a slit for transmitting infrared light from the light projecting element 76p, and 715y is a lens barrel 710. The light receiving element is mounted in a hole 710ya (not shown in FIG. 15) opened in the rear end surface and has a slit for transmitting infrared light from the light projecting element 76y. Element for the mask, 78p mask 71
The light receiving element for pitch direction position detection, which is arranged in front of 5p (inside the lens barrel 710) and is attached to the light receiving element support member 714p, is a pitch direction position detecting light receiving element (note that the yaw direction position detecting light receiving element 78y is Although not shown in FIG. 15, it is arranged in the lens barrel 710 so as to be hidden behind the mask 715y with the same mounting structure as the element 78p), 7
16 is inserted into the lens barrel 710 from the front side of the lens barrel 710, and includes coils 79p and 79y and light projecting elements 76y and 7y.
6p and a flexible printed circuit board (hereinafter abbreviated as “flexible”) for supplying power to the light receiving elements 78p and 78y and transmitting a control signal, and 724 is the last of the interchangeable lens so as to hide the support frame 72 and the locking means 61. A cover disposed at the end and fitted to the rear end of the lens barrel 710;
Is a support arm for supporting the support frame 72 on the rear end surface of the lens barrel 710 so as to be vertically and horizontally movable.

Hereinafter, the mutual coupling structure of the above-mentioned components and the detailed structure of the correction optical device will be further described.

A hole for press-fitting a bearing 73y for rotatably and axially movably supporting the horizontal shaft 74y is opened at the lower end of the support frame 72, and the bearing 73y is press-fitted and fixed in the hole. A small diameter portion 74ya is formed in the center of the horizontal shaft 74y, and the small diameter portion 74ya is formed by the claw portion 7 of the support arm 75.
5a, the shaft 74y is fixed to the support arm 75 by the claw portion and rotatably and axially movable with respect to the bearing 73y (that is, the shaft 74y is axially movable with respect to the support frame 72). It is supported so that it can move relative to the direction of rotation. Therefore, the support arm 75 can also be moved relative to the support frame 72 in the axial direction of the shaft 74y (that is, the left-right direction).

A hole for press-fitting a bearing 73p for supporting the vertical shaft 74p in a relatively slidable manner is opened in the support arm 75, and the bearing 73p is press-fitted and fixed in the hole. A small diameter portion 74pa is formed at the center of the vertical shaft 74p, and the small diameter portion 74pa is clamped by the shaft clamping portion 710a fixed to the rear end surface of the lens barrel 710, whereby the vertical shaft 74p is fixed to the lens barrel 710. Has been done. Therefore, when the support frame 72 is moved in the vertical direction, the support arm 75 moves the support frame 72.
The bearing 73p moves up and down together with the support arm 75 with the shaft 74p as a guide.

On the other hand, when the support frame 72 is moved in the left-right direction, only the support frame 72 moves left-right together with the bearing 73y using the shaft 74y as a guide.

On the rear end surface of the lens barrel 710 (that is, the surface depicted in FIG. 15), a small ball 711 is held in a protruding state so as to be rotatable only at a fixed position at the apex position of an equilateral triangle centered on the axis. And the front end surface of the support frame 72 (the surface facing the rear end surface of the lens barrel 710. It is hidden and not visible in FIG. 15).
Are three parts 72p and 72 facing the small ball 711.
The small balls 711 are in contact with c and 72d (hatched portions in FIG. 15). That is, the three small balls 711 form a plane rolling bearing that supports the support frame 72 by rolling friction in the direction orthogonal to the optical axis with respect to the rear end surface of the lens barrel 710, and also between the support frame 72 and the lens barrel 710. It is a spacer.

The pitch-direction position detecting light-receiving element 78p (the yaw-direction position detecting light-receiving element 78y is the same, so the description of the element 78y will be omitted) is attached to the light-receiving element supporting member 714p, and the mask 715p is attached to the element. Is attached to the light receiving surface side of the element 78.
p, the supporting member 714p, and the mask 715p are attached inside the rear end surface of the lens barrel 710 in an integrated state. To attach the element 78p to the lens barrel 710, the protruding pin 714pa of the support member 714p is attached to the lens barrel 7.
It is carried out by fitting it into the hole 710pc on the rear end face of the device 10. At this time, the mask 715p is exposed at the opening 710pa of the rear end surface of the lens barrel 710, and the element 78p is supported by the support frame 72.
The light projecting element housing case 72pa is directly faced with the light projecting element 76p.

The flexible member 716 is housed in the lens barrel 710, and a screw inserted into a hole 716a formed in the flexible member 716 and a screw insertion hole 717a of the stay 717 is screwed into a hole (not shown) on the rear end surface of the lens barrel 710. Is fixed in the lens barrel 710.

The flexible member 716 is formed with two projecting piece portions 716ya and 716pa extending parallel to the optical axis. The projecting piece portion 716ya passes through a slit-like hole 710yd on the rear end surface of the lens barrel 710. The rearmost end yoke 712 of the yaw direction magnetic circuit unit 62 is pulled out to the rear end surface of the lens barrel 710.
The protruding piece portion 716pa is fastened to the rear end face 716pl of the pitch direction magnetic circuit portion 63 by being fastened to the rear end face of the lens barrel 710 through a slit-shaped hole 710pd on the rear end face of the lens barrel 710. Screw 723 and 7
It is concluded at 26.

The yoke 712y of the yaw direction magnetic circuit section 62
The flexible projecting piece portion 716ya fastened to the l is provided with four soldering land portions 716yb, and two of the land portions 716yb have three polyurethane coatings corresponding to the respective coils 79y. The twisted wire is soldered, and connection leads are soldered to both ends of the light projecting element 76y on the remaining two lands.

Further, the other ends of the above-mentioned three twisted wires and the above-mentioned connecting leads are connected to the terminals formed on the above-mentioned light projecting element case cover 77y, and the coil 79y and the light projecting element are connected through the case cover. It is connected to 76y.

Similarly, the flexible projecting piece portion 716pa fastened to the yoke 712pl of the pitch direction magnetic circuit portion 63 is provided with four soldering land portions 716pb,
Two twisted wires of polyurethane coating corresponding to each of the coils 79p are soldered to two of the land portions 716pb, and a light projecting element 76p is applied to the remaining two land portions.
The connection lead of is soldered.

Further, the other end of the above-mentioned three twisted wires and the above-mentioned connecting lead are connected to the terminal formed on the above-mentioned light emitting element case cover 77p, and the coil 79p and the light emitting element 76p are connected through the case lid. Connected to.

The locking means 61 for locking (locking) and unlocking (unlocking) the support frame 72 is a lens barrel 710.
Chassis 71 fastened at the hole 710b in the rear end face
8, an electromagnetic plunger 719 and a spring 720 mounted on the chassis 718, and a mechanical lock arm 721.
It consists of and.

Mounting portions 718a formed at both ends of the chassis 718 are coupled to one end of a bar (not shown) by screws 723, and the other end of the bar is a hole 71 in the rear end surface of the lens barrel 710.
When the chassis 718 is fastened to the lens barrel 7c
It is fixed to 10. The bar (not shown) is the support frame 7.
The chassis 718 is located behind the support frame 72 (on the left side in FIG. 15) even when fixed to the lens barrel 710.

A screw hole 718b is formed in the chassis 718 at a position facing the rear surface (the surface indicated by the diagonal lines) of the lower end portion 72d of the support frame 72.
8b has a hemispherical tip of a screw 725 screwed into the portion 7b.
It is in contact with the rear surface of 2d. Therefore, the chassis 718 of the locking means 61 and the support frame 72 are held in contact with each other only at the hemispherical tip of the screw 725. The support frame 72 and the chassis 71 are changed by changing the screwing amount of the screw 725 into the screw hole 718b.
The gap between 8 and 8 can be adjusted. York 712
The two screws 725 on p1 are similarly screwed and adjusted.

The mechanical lock arm 721 is attached to the chassis 718 at one end thereof so as to be rotatable around a vertical screw 722, and an intermediate portion of the arm 721 is fixed to a rod or slider (not shown) of an electromagnetic plunger 719. . In addition, the other end of the arm arm 721 has a jump-in pin 721a inserted into a pin hole 72a of the support frame 72.
Is provided.

When a current is applied to the coil of the electromagnetic plunger 719, the arm 721 is rotated around the screw 722 in the clockwise direction to overcome the force of the spring 720, and the jump pin 721a is pulled out from the hole 72a of the support frame 72. The lock of the support frame 72 is unlocked by making the support frame 72 movable in the plane orthogonal to the optical axis.

When no current is applied to the plunger 719, the jumping pin 721a is inserted into the hole 72a of the support frame 72 by the force of the spring 720 and the support frame 72
Are held locked.

[0028]

The above-mentioned conventional image blur correction device for the image stabilizing device has the following problems in terms of structure and manufacturing technique.

1) The blur correction device is optically designed so that the lens does not shift in the direction orthogonal to the optical axis and the optical performance is not deteriorated. However, if the performance at the time of shifting is assured in this way, there is a drawback that the deterioration of the optical performance becomes large when the optical axis is tilted (at the time of tilt). Therefore, when attaching the shake correction device to the lens barrel, it is necessary to position it with high precision and assemble it with great care.

2) Each component is attached while the correction lens 71 is crimped to the support frame 72, but there is a risk that the lens may become dirty or scratched due to the work at that time and the optical performance may be deteriorated. large.

3) Polyurethane-coated copper wires are connected from the case lids 77p, 77y to the flexible projecting piece portions 716pa, 716ya. However, since the number of connections is large (8), incorrect connection or defective connection is possible. It is easy to happen. Furthermore, disconnection becomes a problem.

4) The support frame 72 is provided with a hole for press-fitting the bearing 73y. However, because of this hole alone, the mold for molding the support frame 72 must be a known slide mold, and productivity is improved. Was not good.

5) The two support shafts 74p and 74y are connected by a support arm 75, and the mounting (orthogonal) rigidity of both shafts is maintained by the support arm 75, but both are improved in rigidity. Connect the shafts as one member (support arm 7
There is also a problem that the mounting accuracy is deteriorated because the step 5) is performed.

6) The yoke 712p in the conventional example of FIG.
2, 712y2 are concave portions 710pb on the rear end surface of the lens barrel 710.
And 710yb, the holes 710pba and the screws (not shown) inserted into the holes 710yba from the front inside of the lens barrel 710 are attached to the lens barrel 710, and then the flexible substrate 716 is attached.
When removing the magnetic circuit unit including 2y3 and the magnet 713y and the magnetic circuit unit including the yokes 712p1 to 712p3 and the magnet 713p from the lens barrel 710, it is necessary to remove the flexible substrate 716 first, which is troublesome. The flexible substrate 716 cannot be attached to the lens barrel 710 until the portion is attached, and the subsequent soldering process for the flexible 716 is also performed.
The work was poor because the magnetic circuit part was attached.

7) In the conventional example of FIG. 15, when the flexible member 716 is attached to the lens barrel 710, the protruding piece portion 7 of the flexible member 716 is attached.
16ya and 716pa are inserted into the slit-shaped holes 710yd and 710pd on the rear end surface of the lens barrel 710 from the inside of the lens barrel 710 and pulled out to the rear (front side in FIG. 15), and the respective tip portions 716ya and 716pa are drawn to the yoke 712y1. And the yoke 712p1 on the rear end face thereof, and then the screws 7 are inserted in the holes 716yc and 716pc of the tip end.
Since 26 must be inserted and fixed to the yokes 712y1 and 712p1, the mounting work is very complicated and the work efficiency is poor. Moreover, since the flexible member 716 is inserted inside the lens barrel 710, the work is extremely difficult to perform and it is difficult to see the work portion.

8) Light receiving elements 78y and 78p for detecting the moving position of the supporting frame 72 and supporting members 714p and 7p.
Since 14y and the masks 715y and 715p must be inserted into the lens barrel 710 for the attachment work, the work is extremely difficult and there is a great risk of an attachment error.

9) The conventional locking means 61 shown in FIG. 15 has the following drawbacks.

The number of parts was large and the volume was large. Further, the mechanical lock arm 721 is rotatably fixed to the chassis 718 with a screw 722. However, in order to make the arm rotatable, the tightening amount by the screw 722 is made small so that the space between the chassis 718 and the arm 721 is reduced. Since a gap must be provided in the arm 721, a slight amount of backlash occurs in the arm 721. Therefore, even when the support frame 72 is locked, backlash occurs in the locked state and the support frame 72 is completely fixed. do not become.

10) In the conventional device, the optical element support frame 7
Although the lens barrel of the optical device main body was also used as the stationary member for supporting 2, the assembly of the optical device is very complicated because the image blur correction device is assembled on the assembly line of the optical device main body in this structure. Not only that, but the assembling accuracy of the image blur correction device may be adversely affected. In order to efficiently assemble the optical equipment and to assemble the image blur correction device accurately and efficiently, it is preferable not to use both components.

[0040]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an improved image blur prevention device which can solve the problems inherent in the conventional image blur prevention device described above. An object of the present invention is to provide an improved image blur prevention device.

The tilt of the optical element support frame can be adjusted.

A correction optical element such as a correction lens is attached to the optical element support frame in the final step of the assembly process of the image blur prevention device.

A bearing portion which does not require a bearing hole at the lower end of the optical element support frame (that is, the molding die of the support frame is not a composite type) is formed, or a bearing body which is a separate body is provided in the support frame. Attach with a structure that is easy to install.

The supporting shafts 74p and 74y, which were required in the conventional apparatus, are integrated.

The flexible printed circuit board is used to connect the coil on the optical element support frame and the light projecting element for power supply and signal transmission, and the use of lead wires is eliminated to eliminate manual soldering.

The image blur prevention device is a device separate from the optical device body and can be assembled independently of the optical device body so as to simplify the assembly work and improve efficiency, and to be a component of the image blur prevention device. To simplify the shape and reduce the manufacturing cost.

The object of the present invention will be described below for each claim.

An object of the present invention is to provide an image blur prevention device, comprising: an image blur prevention device which carries an optical element and which can be displaced so as to decenter the optical axis of the optical element. Is held by a holding barrel, and has a holding barrel mounting structure for removably mounting the holding barrel to the optical element mounting portion of the blur correction unit. " is there.

The object of the invention of claim 2 is, "In the image blur prevention device having the structure of claim 1, the holding barrel mounting structure is provided on both the holding barrel and the blur correction means. An image blur prevention device characterized by having a matching means.

The object of the invention of claim 3 is, "In the image blur preventing device having the structure of claim 1, the holding barrel mounting structure is capable of adjusting the tilt of the holding barrel to the optical element mounting portion in the optical axis direction. To provide an image blur prevention device characterized in that it is configured to be attached to the.

An object of the invention of claim 4 is, "In the image blur preventing device having the structure of claim 1, the holding barrel mounting structure is a screwing structure, and the optical element mounting portion is configured as a female threaded cylindrical body. And the holding cylinder is configured as a male-threaded cylindrical body that is screwed into the female-threaded cylindrical body.

An object of the invention of claim 5 is, "In the image blur prevention device having the structure of claim 1, the holding cylinder mounting structure is a fitting structure, and the optical element mounting portion is a first cylindrical body. The holding cylinder is configured as a second cylindrical body that is removably fitted into the first cylindrical body, and the first cylindrical body is elastically attached to the outer peripheral portion of the second cylindrical body. An image blur prevention device is provided with a flexible elastic engagement piece that is pressed against the.

The object of the invention of claim 6 is "in the image blur prevention device having the structure of claim 1, the holding cylinder mounting structure is formed as a screw fastening structure by a set screw, and is formed on the outside of the holding cylinder. And an image blur prevention device characterized in that the holding cylinder is fastened to the blur correction means at a screw fastening portion.

An object of the present invention is to provide "a shake correcting means which carries an optical element and is displaceable in a direction orthogonal to an optical axis of the optical element, and a shaft support which is detachably attached to the shake correcting means. Means and a support shaft that is in slidable contact with the shaft support means in a first direction orthogonal to the optical axis, the optical element is held by a holding cylinder, and the holding cylinder is provided with the shake correction. An image blur prevention device having a holding cylinder mounting structure that is detachably mounted to an optical element mounting portion of the means.

An object of the present invention is to provide an image blur prevention device, comprising: an image blur correction device movable in a first direction parallel to a plane orthogonal to an optical axis, wherein the image blur correction device has the first A support shaft for slidingly guiding the shake correcting means in the first direction when moving in one direction, and a shaft supporting means provided on the shake correcting means so as to be slidable relative to the support shaft. However, the shaft support means is composed of first and second recesses formed in the shake correction means, and the first recess is opened in the first surface of the shake correction means, and the second recess is formed. The concave portion opens on the second surface of the blur correction unit opposite to the first surface, and the support shaft is slidable in the axial direction at the portions of the first and second concave portions that overlap each other. An image blur prevention device characterized in that it is supported ".

The object of the invention of claim 9 is, "In the image blur prevention device having the structure of claim 8, the dimension in the height direction of at least one of the first and second recesses is the outer diameter of the support shaft. And the sum of the depth dimensions of the first and second recesses is the optical axis direction dimension between the first surface and the second surface of the shake correction means. An image blur preventing device characterized in that the size is equal to the dimension including the outer diameter or is larger than the dimension in the optical axis direction of the blur correction means.

The object of the invention of claim 10 is "in the image blur prevention device having the structure of claim 8 or 9, wherein the shaft support means composed of the first recess and the second recess is An image blur prevention device characterized by comprising a member made of a material having a small friction coefficient, which is separate from the image blur correction means "
It is to provide.

An object of the present invention is to provide "a shake correcting means which is displaceable in a direction orthogonal to the optical axis, a shaft supporting means which is detachable from the shake correcting means, and an orthogonal direction to the optical axis. And a support shaft that makes relative sliding contact with the shaft support means in a first direction.

The object of the invention of claim 12 is "claim 11"
In the image blur prevention device having the above structure, the shaft support means is detachably attached to the blur correction means.

An object of the invention of claim 13 is, "In an image blur prevention device having an image blur correction device movable in first and second directions parallel to a plane orthogonal to the optical axis, the image blur correction device is provided. Has a first straight line portion for slidingly guiding the shake correcting means in the first direction when the shake correcting means moves in the first direction, and the shake correcting means when the shake correcting means moves in the second direction. And a bent support shaft having a second straight portion that moves in the second direction together with the first straight portion, and the first straight portion of the support shaft slidably supported in the axial direction and the shake correction. A first shaft support means that moves together with the means, and a second shaft support means that supports the second linear portion of the support shaft so as to be slidable in the axial direction and is fixed to a stationary member. By providing an image blur prevention device characterized by That.

The object of the invention of claim 14 is "claim 13"
In the image blur prevention device having the above-mentioned configuration, the first shaft support means is detachably attached to the blur correction means.

The object of the invention of claim 15 is to claim "claim 13"
In the image blur prevention device having the structure described above, the first shaft support means is detachably attached to the blur correction means, and the second shaft support means is detachably attached to the stationary member. The present invention is to provide a "characteristic image blur prevention device".

The object of the invention of claim 16 is "claim 13"
In the image blur prevention device having the above structure, at least one of the first shaft support means and the second shaft support means is detachably attached to the blur correction means and the stationary member by a spring clamp type connection. The present invention is to provide a "characteristic image blur prevention device".

The object of the invention of claim 17 is "claim 13"
In the image blur prevention device having the above-mentioned configuration, the direction of the optical axis in at least one of the engagement relationship between the support shaft and the first shaft support means and the engagement relationship between the support shaft and the second shaft support means. Is provided with a predetermined play.

The object of the invention of claim 18 is to claim 13
In the image blur prevention device having the above-mentioned structure, the frequency of the natural vibration determined by the elasticity of the bent portion connecting the first straight line portion and the second straight line portion of the support shaft and the total mass of the blur correction unit is An image blur preventing device characterized in that the image blur preventing device is set to a higher frequency side than a vibration frequency band at the time of the blur correction driving of the blur correcting means.

An object of the present invention is to provide: "a shake correcting means driven in a direction orthogonal to an optical axis, an immovable base plate supporting the shake correcting means, and the shake correcting means from the base plate. And a first flexible printed circuit board for power supply or signal transmission.

The object of the invention of claim 20 is "claim 19"
In the image blur prevention device having the structure described above, a printed circuit board is attached to the base plate, and one end of the first flexible printed circuit board is connected to the printed circuit board. The equipment is to be provided.

The object of the invention of claim 21 is "claim 19"
In the image blur prevention device having the structure described above, a second flexible printed board is attached to the base plate instead of the printed circuit board, and one end of the first flexible printed board is connected to the second flexible printed board. And the first flexible printed circuit board is made of a substrate material that is softer than the second flexible printed circuit board.

The object of the invention of claim 22 is "claim 19"
In the image blur prevention device having the structure described above, a second flexible printed board is attached to the base plate instead of the printed circuit board, and the first flexible printed board and the second flexible printed board are welded to each other. The present invention is to provide an image blur prevention device characterized by being provided.

The object of the invention of claim 23 is "claim 19"
In the image blur prevention device having the configuration described above, the first flexible printed circuit board has a flat surface portion orthogonal to the moving direction of the shake correction means, and the flat surface portion is provided with a bent portion. It is to provide an image blur prevention device ".

The object of the invention of claim 24 is "claim 23"
The image blur prevention device having the above-mentioned configuration, wherein the bent portion is formed in advance when the second flexible printed circuit board is manufactured. ”
It is to provide.

The object of the twenty-fifth aspect of the present invention is to provide: "A shake correction unit driven in a direction orthogonal to the optical axis, a stationary base plate supporting the shake correction unit, and a printed circuit attached to the base plate. In an image blur prevention device having a substrate, a detection unit for detecting the operation of the blur correction unit is attached to the printed circuit board, and a positioning portion for positioning the detection unit is formed on the main plate. , The printed circuit board is positioned on the base plate by positioning the detection means on the positioning portion.

The object of the invention of claim 26 is "claim 25"
In the image blur prevention device having the above structure, the positioning portion is a hole fitted into the outer frame of the detection means.

The object of the invention of claim 27 is "claim 25"
In the image blur prevention device having the structure described above, the detection means is provided with a hole, and the base plate is provided with a pin fitted into the hole as the positioning portion. ” Is to provide.

The object of the invention of claim 28 is "claim 25".
In the image blur prevention device having the structure described above, a detection means for detecting the operation of the blur correction means is attached to the printed circuit board, and a positioning hole is formed in the detection means, and the base plate or the printed circuit board is provided with the positioning hole. An image blur preventing device characterized in that the provided pin is fitted in the positioning hole.

The object of the invention of claim 29 is "the blur correction means driven in the direction orthogonal to the optical axis, the stationary base plate supporting the blur correction means, and the blur attached to the base plate. And a magnetic circuit means for driving the correcting means, wherein the magnetic circuit means are provided with a plurality of magnetic circuit means arranged in parallel to a plane orthogonal to the optical axis and spaced from each other along the direction of the optical axis. An image blur prevention device having a yoke including an electrode plate, the yoke being attached to the base plate in a state in which a compressive force is applied in a direction in which a distance between the electrode plates is reduced. That is.

The object of the thirtieth aspect of the present invention is to provide "a blur correction unit driven in a direction orthogonal to the optical axis, and a cylinder fixed on the outer peripheral surface of the blur correction unit in a radial direction with respect to the optical axis. In an image blur prevention device having a coil, an elastic gripping member for gripping the coil from the inside is projectingly provided on the outer peripheral surface of the shake correcting means at a position where it does not enter the magnetic field in the coil. The invention provides an image blur preventing device characterized in that a bent engaging portion that engages with the tip of the coil is formed at the tip of the member.

The object of the invention of claim 31 is "claim 30"
In the image blur prevention device having the above-mentioned structure, a filling groove for an adhesive agent for adhering the coil to the shake correcting means is provided on the outer peripheral surface of the shake correcting means in contact with the base end portion of the coil. To provide an image blur prevention device characterized in that it is formed along the direction.

The object of the thirty-second aspect of the invention is to provide: "In an image blur preventing device having a blur correcting means driven in a direction orthogonal to the optical axis, a regulating means for regulating movement of the blur correcting means in the optical axis direction is provided. An image blur prevention device characterized in that it also functions as a shading mask for the blur correction means as the regulation means.

The object of the thirty-third aspect of the present invention is to provide "in an image blur preventing device having a blur correction means driven in a direction orthogonal to the optical axis, a regulating means for regulating movement of the blur correction means in the optical axis direction. And an image blur prevention device characterized in that the regulating means has a position adjusting means for adjusting a fixed position of the blur correcting means in the optical axis direction.

The object of the invention of claim 34 is "claim 33".
In the image blur prevention device having the above-mentioned configuration, the position adjusting means includes a spring and a screw structure.

An object of the present invention is to provide an image blur prevention device comprising: an image blur correction means for correcting image blur and an immovable ground plate supporting the image blur correction means. Locking means for prohibiting movement is provided, and the locking means has a locking arm that is fixed to the base plate and is biased by a spring in a direction of approaching and retracting with respect to the shake correcting means. An image blur preventing device characterized by the above.

The object of the invention of claim 36 is to claim "claim 35".
In the image blur prevention device having the above structure, a part of the locking arm has a spring property.

The object of the invention of claim 37 is "claim 35"
In the image blur prevention device having the above-mentioned configuration, the locking arm is made of a synthetic resin material and is integrally formed with a leaf spring attached to the base plate. That is.

The object of the thirty-eighth aspect of the present invention is to provide an image blur preventing device having an image blur compensating device for compensating image blurring and a stationary base plate supporting the image blur compensating device. An image blur prevention device characterized in that the base plate is provided with a connecting means for connecting the base plate to a lens barrel of an optical device in which the That is.

[0086]

In order to solve the above-mentioned problems, the invention according to a first aspect of the invention is to provide "a blur correction means which carries an optical element and is displaceable so as to decenter the optical axis of the optical element. The image blur prevention device has a holding barrel attachment structure in which the optical element is held by a holding barrel and the holding barrel is detachably attached to an optical element attachment portion of the blur correction unit. Characteristic image blur prevention device "
I will provide a.

According to the present invention, since the optical element may be attached to the blur correction means in the final step of the process of assembling the image blur prevention device, there is no risk of the optical element being damaged or soiled in the assembly process. .

In order to solve the above-mentioned problems, the invention of claim 2 states that "in the image blur preventing device having the structure of claim 1, the holding barrel mounting structure has both the holding barrel and the blur correcting means. An image blur prevention device characterized in that it has mutual engagement means provided.

According to the present invention, since the holding cylinder can be detachably attached to the shake correcting means by the mutual engaging means, the holding cylinder is attached to the shake correcting means in the final step of the assembly process of the image shake preventing apparatus. Optical elements can be attached.

In order to solve the above-mentioned problems, the invention of claim 3 provides: "In the image blur preventing device having the structure of claim 1, the holding barrel mounting structure has the holding barrel mounted on the optical element mounting portion as an optical axis. An image blur prevention device characterized by being configured so that it can be mounted so that the inclination of the direction can be adjusted. "
I will provide a.

According to the present invention, since the holding cylinder can be attached to the optical element attachment portion so that the inclination in the optical axis direction can be adjusted, the optical axis of the blur correction means can be adjusted when the image blur prevention device is attached to an optical device. The optical axis of the optical device can be adjusted.

In order to solve the above-mentioned problems, the invention of claim 4 provides, "In the image blur prevention device having the structure of claim 1, the holding cylinder mounting structure is a screwing structure, and the optical element mounting portion is a female screw. An image blur preventing device, characterized in that it is configured as a cylindrical body with an external thread, and the holding cylinder is configured as a cylindrical body with an external thread that is screwed into the cylindrical body with an internal thread.

According to the present invention, since the holding cylinder can be removably attached to the optical element attachment portion of the image blur correction means, the optical image can be attached to the optical image blur prevention means in the final step of the assembly process of the image blur prevention device. The element can be attached.

In order to solve the above-mentioned problems, a fifth aspect of the present invention provides: "In the image blur prevention device having the structure of the first aspect, the holding cylinder mounting structure is a fitting structure, and the optical element mounting portion is The first cylindrical body is configured as a second cylindrical body that is removably fitted into the first cylindrical body, and the first cylindrical body includes the second cylindrical body of the second cylindrical body. An image blur prevention device characterized in that a flexible elastic engagement piece which is elastically pressed against the outer peripheral portion is provided.

According to the present invention, since the optical element may be attached to the blur correction means in the final step of the process of assembling the image blur prevention device, there is no risk of the optical element being damaged or soiled in the assembly process. .

In order to solve the above-mentioned problems, the invention of claim 6 states that "in the image blur prevention device having the structure of claim 1, the holding cylinder mounting structure is configured as a screw fastening structure using a retaining screw, An image blur prevention device characterized in that the holding cylinder is fastened to the blur correction means at a screw fastening portion formed on the outer side of the device.

According to the present invention, since the optical element may be attached to the blur correction means in the final step of the assembling process of the image blur preventing device, there is no fear of the optical element being damaged or soiled in the assembling process. .

In order to solve the above-mentioned problems, the invention of claim 7 is directed to "a blur correcting means which carries an optical element and is displaceable in a direction orthogonal to an optical axis of the optical element, and the blur correcting means. The optical element is held by a holding cylinder, and has a detachable shaft support means and a support shaft that makes relative sliding contact with the shaft support means in a first direction orthogonal to the optical axis. An image blur prevention device having a holding barrel mounting structure for removably mounting a barrel to an optical element mounting portion of the blur correction unit.

According to the present invention, since the shake correcting means is provided with the detachable shaft supporting means, the molding die of the shake correcting means is simplified and the molding cost can be reduced. Further, since the optical element may be attached to the blur correction unit in the final step of the assembly process of the image blur prevention device, there is no risk of the optical element being damaged or soiled in the assembly process.

In order to solve the above-mentioned problems, the present invention according to claim 8 provides an image blur prevention device, comprising: an image blur prevention device having a blur correction means movable in a first direction parallel to a plane orthogonal to the optical axis. A support shaft for slidingly guiding the shake correcting means in the first direction when the corrector moves in the first direction, and a shaft support provided on the shake correcting means so as to be slidable relative to the support shaft. Means and the shaft support means is constituted by first and second recesses formed in the shake correction means, the first recesses being opened in the first surface of the shake correction means. ,
The second concave portion opens on a second surface of the blur correction unit opposite to the first surface, and the support shaft has an axial direction in a portion where the first and second concave portions overlap each other. An image blur prevention device characterized by being slidably supported.

According to the present invention, since the shaft supporting means is constituted not as a hole but as a simple recessed portion, the structure of the shake correcting means is simple, and accordingly, the molding die of the shake correcting means is simplified. Therefore, the molding cost can be reduced.

In order to solve the above-mentioned problems, the invention of claim 9 is that "in the image blur prevention device having the structure of claim 8, at least one of the first and second recesses has a dimension in the height direction thereof. The sum of the depth dimensions of the first and second recesses is a dimension that fits the outer diameter of the support shaft, and the dimension in the optical axis direction between the first surface and the second surface of the shake correction means. The image blur prevention device is characterized in that it is set to be equal to the dimension of the outer diameter of the support shaft or larger than the dimension of the blur correction means in the optical axis direction.

According to the present invention, since the shaft support means is not a hole but a simple concave portion, the structure of the shake correcting means is simple, and therefore the molding die of the shake correcting means is simplified. Therefore, the molding cost can be reduced.

In order to solve the above-mentioned problems, the invention of claim 10 provides: "In an image blur prevention device having the structure of claim 8 or 9, the image forming device comprises the first concave portion and the second concave portion. An image blur prevention device characterized in that the shaft support means is composed of a member made of a material having a small friction coefficient which is separate from the blur correction means.

According to the present invention, since the shaft support means is composed of a member made of a material having a small friction coefficient, which is separate from the shake correction means, the shake correction means can be operated smoothly.

In order to solve the above-mentioned problems, the invention of claim 11 is directed to "a shake correcting means which is displaceable in a direction orthogonal to an optical axis, and a shaft supporting means which is detachable from the shake correcting means.
An image blur prevention device ", which has a support shaft that is in relative sliding contact with the shaft support means in a first direction orthogonal to the optical axis.

According to the present invention, since the shake correcting means is provided with the detachable shaft supporting means, the molding die of the shake correcting means is simplified and the molding cost can be reduced.

In order to solve the above-mentioned problems, the invention of claim 12 provides, "In the image blur preventing device having the structure of claim 11, the shaft support means is configured to be detachable from the blur correction means. A unique image blur prevention device "is provided.

According to the present invention, since the shake correcting means is provided with the detachable shaft supporting means, the molding die of the shake correcting means is simplified and the molding cost can be reduced.

In order to solve the above-mentioned problems, the invention of claim 13 is directed to "An image blur prevention device having an image blur correction means movable in first and second directions parallel to a plane orthogonal to the optical axis. , A first straight portion for slidingly guiding the shake correcting means in the first direction when the shake correcting means moves in the first direction, and the shake correcting means moves in the second direction. Sometimes a bent support shaft having a second straight line portion that moves in the second direction together with the shake correction means and the first straight line portion, and an axially slidable support for the first straight line portion of the support shaft. And a first shaft supporting unit that moves together with the shake correcting unit, and a second shaft supporting unit that supports the second linear portion of the supporting shaft slidably in the axial direction and is fixed to a stationary member. An image blur prevention device characterized by having To provide.

According to the present invention, since the shake correcting means is supported by the stationary member so that it can be easily moved in the first and second directions via the support shaft, an accurate shake correcting operation is performed. be able to.

In order to solve the above-mentioned problems, the invention of claim 14 states that "in the image blur preventing device having the structure of claim 13, the first shaft support means is detachably attached to the blur correction means. Image blur prevention device characterized by
I will provide a.

According to the present invention, since the first shaft support means is structured to be detachably attached to the shake correction means, the molding die of the shake correction means can be simplified and the molding cost can be reduced. It can be reduced.

In order to solve the above-mentioned problems, the invention of claim 15 is that "in the image shake preventing device having the structure of claim 13, the first shaft support means is detachably attached to the shake correction means. , The second shaft support means is detachably attached to the stationary member.

According to the present invention, the first shaft support means is detachably attached to the shake correction means, and the second shaft support means is detachably attached to the stationary member. The structure of the correction means and the structure of the stationary member can be simplified, and an image blur prevention device with low manufacturing cost can be realized.

In order to solve the above-mentioned problems, the invention of claim 16 is that "in the image blur preventing device having the structure of claim 13, at least one of the first shaft supporting means and the second shaft supporting means is a spring clamp. An image blur prevention device characterized in that the image blur prevention device is detachably attached to the blur correction means and the stationary member by a formula coupling.

According to the present invention, since at least one of the first shaft supporting means and the second shaft supporting means can be attached and detached very easily, the assembly and disassembly of the apparatus can be easily carried out, and the manufacturing The cost can be reduced.

In order to solve the above-mentioned problems, the invention of claim 17 provides, "In the image blur preventing device having the structure of claim 13, the engagement relationship between the support shaft and the first shaft support means and the support shaft. And a second play is provided in at least one of the engaging relationship with the second shaft support means in the direction of the optical axis.

According to the present invention, at least one of the engagement relationship between the support shaft and the first shaft support means and the engagement relationship between the support shaft and the second shaft support means is in the direction of the optical axis. Since the predetermined play is provided, it is possible to prevent the restraint force on the shake correction means from becoming excessive and prevent the drive load of the shake correction means from becoming excessive.

In order to solve the above-mentioned problems, the invention of claim 18 is that "in the image blur preventing device having the structure of claim 13, the first straight line portion and the second straight line portion of the support shaft are connected to each other. An image characterized in that the frequency of the natural vibration determined by the elasticity of the bent portion and the total mass of the shake correction means is set to a higher frequency side than the vibration frequency band when the shake correction means is driven for shake correction. Anti-shake device "is provided.

According to the present invention, it is possible to prevent the shake correcting means from rolling around the optical axis during the operation of the shake correcting means, and to prevent the vibration of the shake correcting means from occurring. You can

In order to solve the above-mentioned problems, the invention of claim 19 is that "a blur correcting means driven in a direction orthogonal to the optical axis, an immovable base plate supporting the blur correcting means, and the base plate And a first flexible printed circuit board for supplying power or transmitting a signal to the image blur correction means.

According to the present invention, since a flexible printed circuit board is used instead of a lead wire for supplying power or transmitting a signal to the image blur correction means, the soldering work is reduced and an image free from wiring connection failure is obtained. A shake prevention device can be realized.

In order to solve the above-mentioned problems, the invention of claim 20 provides: "In the image blur prevention device having the structure of claim 19, a hard printed circuit board is attached to the base plate, and the first One end of the flexible printed circuit board is connected to the printed circuit board.

According to the present invention, since the hard printed circuit board is attached to the base plate, the electrical mounting work of the device can be performed more easily than the conventional device.

In order to solve the above-mentioned problems, the invention of claim 21 provides: "In an image blur preventing device having the structure of claim 19, a second flexible printed circuit board is attached to the base plate instead of the printed circuit board. One end of the first flexible printed circuit board is connected to the second flexible printed circuit board, and the first flexible printed circuit board is made of a board material softer than the second flexible printed circuit board. To provide an image blur prevention device ".

According to the present invention, since the first flexible printed circuit board for wiring is made softer than the second flexible printed circuit board, the electrical connection work between the shake correction means and the ground plane is performed. Can be done easily.

In order to solve the above-mentioned problems, the invention of claim 22 provides, "In the image blur preventing device having the structure of claim 19, a second flexible printed circuit board is attached to the base plate instead of the printed circuit board. And an image blur prevention device, characterized in that the first flexible printed circuit board and the second flexible printed circuit board are welded to each other.

According to the present invention, since both the flexible printed boards are welded in advance, the electrical mounting work on the device can be simplified.

In order to solve the above-mentioned problems, the invention of claim 23 is, "In the image blur preventing device having the structure of claim 19, the first flexible printed circuit board is a plane orthogonal to the moving direction of the blur correcting means. And an image blur prevention device having a curved portion provided on the plane portion.

According to the present invention, the flexible printed board can be easily connected.

In order to solve the above-mentioned problems, the invention of claim 24 is that "in the image blur preventing device having the structure of claim 23, the bent portion is formed in advance when the second flexible printed circuit board is manufactured. An image blur prevention device characterized by being a thing.

According to the present invention, it is possible to easily carry out the electric mounting work because the work such as processing of the flexible printed circuit board is unnecessary in the electric mounting process of the device.

In order to solve the above-mentioned problems, the invention of claim 25 is directed to "a blur correction means driven in a direction orthogonal to the optical axis, an immovable base plate supporting the blur correction means, and a base plate. In an image blur prevention device having a printed circuit board attached thereto, a detection unit for detecting the operation of the blur correction unit is attached to the printed circuit board, and a positioning unit for positioning the detection unit on the main plate. Is provided, and the printed circuit board is positioned on the base plate by positioning the detecting means on the positioning portion.

According to the present invention, since the detecting means and the printed circuit board can be simultaneously positioned on the base plate, the number of work steps for mounting the electric parts on the apparatus is reduced, which is effective in cost reduction.

In order to solve the above-mentioned problems, the invention of claim 26 provides, "In the image blur preventing device having the structure of claim 25, the positioning portion is a hole fitted into the outer frame of the detecting means. A unique image blur prevention device "is provided.

According to the present invention, the printed circuit board and the detecting means can be positioned on the base plate only by fitting the detecting means into the hole of the printed circuit board, so that the step of mounting the electric parts of the apparatus can be performed. Can be simplified.

In order to solve the above-mentioned problems, the invention of claim 27 provides, "In the image blur preventing device having the structure of claim 25, the detecting means is provided with a hole, and the main plate is fitted into the hole. An image blur preventing device "is provided, in which a pin that is provided as the positioning portion is provided.

According to the present invention, by inserting the pin into the hole of the detecting means, the detecting means can be accurately positioned on the base plate, so that the electrical mounting work on the device can be easily performed.

In order to solve the above-mentioned problems, the invention of claim 28 is, "In the image blur preventing device having the structure of claim 25, the detecting means for detecting the operation of the blur correcting means is attached to the printed circuit board. A positioning hole is formed in the detection means, and a pin provided on the base plate or the printed circuit board is fitted in the positioning hole.

According to the present invention, if the pin is inserted into the hole of the detecting means, the detecting means can be accurately positioned on the base plate or the printed circuit board, so that the electrical mounting work on the device can be easily performed. it can.

In order to solve the above-mentioned problems, the invention of claim 29 is, "A blur correction means driven in a direction orthogonal to an optical axis, an immovable bottom plate supporting the blur correction means, and attached to the bottom plate. And a magnetic circuit means for driving the shake correction means, wherein the magnetic circuit means are parallel to a plane orthogonal to the optical axis and are spaced from each other along the direction of the optical axis. An image blur prevention, comprising a yoke including a plurality of polar plates arranged, the yoke being attached to the main plate in a state in which a compressive force is applied in a direction in which a gap between the polar plates is reduced. Equipment.

According to the present invention, since the yoke is attached to the base plate in a state in which a compressive force is applied in the direction in which the electrode plate interval of itself becomes narrow, the yoke is provided between the shake correcting means and the yoke. There is no risk of rattling, and therefore the shake correction means can be caused to perform an accurate operation.

In order to solve the above-mentioned problems, the invention of claim 30 is directed to "a blur correction means driven in a direction orthogonal to the optical axis and an outer peripheral surface of the blur correction means directed in a radial direction with respect to the optical axis. In an image blur prevention device having a cylindrical coil fixed in place, an elastic gripping member that grips the coil from the inside is provided on the outer peripheral surface of the blur correction unit at a position where it does not enter the magnetic field in the coil. The elastic gripping member has a bent engagement portion formed at the tip end thereof to engage with the tip end of the coil.

According to the present invention, since the coil can be quickly attached to the shake correction means, the assembly cost of the device can be reduced.

In order to solve the above-mentioned problems, the invention of claim 31 provides: "In the image blur preventing device having the structure of claim 30, the outer peripheral surface of the blur correction means that comes into contact with the base end of the coil has the An image blur prevention device, characterized in that a filling groove for an adhesive for adhering a coil to the image blur correction means is formed along the circumferential direction of the coil.

According to the present invention, since the filling groove is provided, the amount of the adhesive that adheres to the outer surface of the shake correction means decreases, and the risk that the adhesive adheres to other members decreases.

In order to solve the above-mentioned problems, the invention of claim 32 is, "In an image blur preventing device having an image blur correction unit driven in a direction orthogonal to an optical axis, the movement of the image blur correction unit in the optical axis direction is prevented. There is provided an image blur preventing device characterized in that it has a regulating means for regulating, and also serves as a shading mask for the blur correcting means as the regulating means.

According to the present invention, since the light-shielding mask also serves as the regulating means, the number of constituent members can be reduced.

In order to solve the above-mentioned problems, the invention of claim 33 states that "in an image blur preventing device having an image blur correction means driven in a direction orthogonal to the optical axis, movement of the image blur correction means in the optical axis direction is prevented. An image blur prevention device characterized in that it has a regulating means for regulating, and the regulating means has a position adjusting means for adjusting the position of the shake correcting means in the optical axis direction.

According to the present invention, since the position adjusting means is provided, the load in the moving direction of the shake correcting means can be optimally adjusted for each device.

In order to solve the above-mentioned problems, the invention of claim 34 provides, "In the image blur preventing device having the structure of claim 33, the position adjusting means includes a spring and a screw structure. Anti-shake device "is provided.

According to the present invention, the friction load of the shake correcting means can be finely adjusted by the spring and screw structure.

In order to solve the above-mentioned problems, the invention of claim 35 is, "An image blur preventing device having an image blur correcting means for correcting an image blur and an immovable bottom plate supporting the image blur correcting means, The locking arm has locking means for prohibiting movement of the shake correcting means, and the locking means is fixed to the base plate and is biased by a spring in a direction to approach and retract with respect to the shake correcting means. An image blur prevention device characterized in that it has.

According to the present invention, since the locking arm is spring-biased toward and away from the shake correcting means, the shake correcting means is locked more reliably than the conventional locking means. can do.

In order to solve the above-mentioned problems, the invention of claim 36 is that "in the image blur preventing device having the structure of claim 35, a part of the locking arm has a spring property. An image blur prevention device "is provided.

According to the present invention, since the locking arm itself is a spring, the number of parts is small and the shake correcting means can be locked more reliably than the conventional locking means.

In order to solve the above-mentioned problems, the invention of claim 37 provides: "In the image blur preventing device having the structure of claim 35, the locking arm is made of a synthetic resin material and is attached to the main plate. An image blur prevention device characterized by being formed integrally with a spring.

According to the present invention, since the locking arm is made of a synthetic resin material, a highly durable locking means can be constructed.

In order to solve the above-mentioned problems, the invention of claim 38 is, "An image blur preventing device comprising: an image blur compensating means for compensating an image blur, and a stationary base plate supporting the image blur compensating means, Image blur prevention, characterized in that the ground plane is provided with a coupling means for coupling the base plate to a lens barrel of an optical device in which the image blur prevention device is to be mounted so that the base plate can be tilt-adjusted with respect to the optical axis direction. Equipment.

According to the present invention, since the optical axis of the image blur prevention device can be adjusted to an arbitrary inclination with respect to the optical axis of the optical device, the image blur prevention device can be easily attached.

[0162]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of an improved image blur prevention device according to the present invention will be described below with reference to FIGS.

<Embodiment 1> FIG. 1 is an exploded perspective view of an image blur prevention device according to a first embodiment of the present invention.

In the following description, the direction seen on the front side in FIG.

As shown in FIG. 1, in the image blur prevention device of this embodiment, the support frame 7 which holds the correction lens 71 detachably.
2. A yoke and a permanent magnet forming a magnetic circuit portion of an electromagnetic actuator that drives the support frame 72 are attached, and the support frame 72 is relatively moved via support members 13p and 13y, which will be described later, and an L-shaped shaft 14. An annular disc-shaped base plate 12 that is supported so that it can be screwed to the tips of three pillars 12 that protrude from the front surface (the surface shown in FIG. 1) of the base plate 12 in parallel with the optical axis of the lens 71. The support frame 72
An annular disc-shaped mask / cover 17 arranged in front of the
An annular disc-shaped rigid (hard) printed circuit board 15 attached to the rear end surface (hidden surface in FIG. 1) of the base plate 12 and the support frame 72 with respect to the optical axis at a position on the front surface side of the base plate 12. The L-shaped shaft 14 and the supporting members 13p and 13y of the L-shaped shaft 15 serving as supporting means for supporting the L-shaped shaft 15 so as to be relatively movable in the orthogonal direction are the main structural parts.

The electromagnetic actuator for driving the support frame 72 is a coil 79 attached to the support frame 72.
p and 79y, and yokes 712p and 712y attached to the recesses 12pd and 12yd on the front surface of the main plate 12.
And a magnet (permanent magnet) 7 bonded and fixed to the yoke
13 and. A pitch-direction magnetic circuit portion including a combination of a yoke 712p and a magnet 713 is fitted in a recess 12pd on the front surface of the main plate 12, and self-tapping screws 727 are provided in the holes 712pa of the yoke 712 (one in each of the left and right, but in the figure, (Only the individual is visible) and the hole 12e of the main plate 12 are fixed to the main plate 12 by inserting from the front side of the main plate 12 and screwing.

Similarly, the yoke 712y and the magnet 71 are
Also in the yaw direction magnetic circuit portion composed of the combination with 3, the self-tapping screw 727 is formed in the hole 712ya of the yoke 712y (one at the top and the bottom, but only one is visible in the figure) and the hole 12e of the main plate 12. It is fixed to the concave portion 12ya on the front surface of the main plate 12 by being inserted from the front side of the main plate 12 and screwed in.

In the device of the present invention, the yokes 712y and 712y
Since each of the 12p is formed by pressing an electromagnetic steel plate into an E shape by pressing, the manufacturing cost and the device assembling cost are significantly reduced as compared with the yoke of the conventional device.

The pitch direction drive coil 79p for moving the support frame 72 in the vertical direction and the yaw direction drive coil 79y for moving the support frame 72 in the horizontal direction are fixed to the outer peripheral surface of the support frame 72 as follows. There is.

FIG. 2 is a schematic view of a vertical section and a side section in which the coil 79p is attached to the outer periphery of the support frame 72.

In FIGS. 1 and 2, 72e is a plate-like holding member for fixing the coil 79p to the upper end surface of the support frame 72, and extends upward along the inner surfaces of both ends of the opening of the coil 79p. Two pieces are projectingly provided on the upper surface of the support frame 72 so as to exist. The gripping member 72e has elasticity that tends to spread outward, and has a hook-shaped bent portion 72ea that elastically engages with the upper end of the coil 79p at the tip thereof. Therefore, when attaching the coil 79p to the support frame 72, the two gripping members 72e are bent in a direction in which they approach each other, and are inserted into the coil 79p, and then the coil 79p is lowered toward the upper surface of the support frame 72. As it is lowered, the bent portion 72ea at the tip of the member 72e becomes the coil 79.
The bent portion 72ea relatively rises in the coil 79p while sliding on the inner peripheral surface of p, and the lower end of the coil 79p is supported by the support frame 7.
When the bent portion 72ea contacts the upper surface of the coil 7,
9p, the bending of the member 72e is released, and as a result, the restoring force of the member 72e causes the bent portion 72ea to move vigorously toward the outside of the coil. As a result, the member 72e spreads outward. The coil 79p is gripped from the inside like a collet chuck by the elastic force of the bending, and the bent portion 72ea also firmly engages with the upper end of the coil 79p by the spring force.

Since the gripping member 72e is provided at a position that does not enter the magnetic field region (the range indicated by the X mark in FIG. 2) in the coil 79p, even if the member 72e enters the coil, the electromagnetic effect is adversely affected. Does not happen.

The support frame 7 to which the lower end of the coil 79p is pressed.
As shown in FIG. 2B, a groove 72f is formed on the upper surface of 2 along the outer circumference of the coil, and the adhesive 72 is formed in the groove 72f.
g is filled and the coil 79p is fixed so as not to move. Since the groove 72f is provided, swelling of the adhesive can be almost eliminated even if the amount of the adhesive is large.

The support member 13y for supporting the horizontal portion of the L-shaped shaft 14 and the support member 13p for supporting the vertical portion of the shaft 14 are made of a material having a small friction coefficient (for example, PO.
M :), and grooves 13yb and 13pb for supporting the shaft 14 in such a manner that the shaft 14 is relatively slidable and relatively rotatable in the axial direction are formed on the front surfaces of both support members, and the openings of the grooves are formed. Claws 13yc and 13pc for restricting the shaft 14 from coming out of the groove in a direction orthogonal to the axis (direction parallel to the optical axis of the lens) are formed on the side edge portion. In the support structure of the horizontal portion of the shaft 14 of the support member 13y, the shaft 1 is arranged in the direction parallel to the optical axis.
The claw 13yc is formed so that 4 has a slight play.

On the rear surface of the support member 13y, as shown in the lower right of FIG. 1, the tip end portion is large and has a spring-like projection 1 which is bifurcated along the axial direction.
3ya is formed, and the projecting portion 13ya is attached to the support frame 7
By forcibly pushing it into the square hole 72h (the width of the hole 72h is narrower than the width of the projecting portion 13ya) at the lower end of 2, the support member 13y is "patched" to the support frame 72 (spring force is applied). It is fixed by the used collet chuck type clamp connection).

Similarly, the same protrusion 13pa as the protrusion 13ya is formed on the rear surface of the support member 13p, and the protrusion 13pa is formed in the square hole 12b on the front surface of the main plate 12.
The support member 1 is forcibly pushed into (the vertical dimension of the hole 12b is narrower than the width of the protrusion 13pa).
3p is fixed to the base plate 12 by "patchon coupling".

Therefore, when the support frame 72 is moved in the vertical direction (that is, the pitch direction) by the electromagnetic actuator, the vertical portion of the L-shaped shaft 14 slides relative to the support member 13p in the vertical direction, When the support frame 72 is moved in the left-right direction (that is, the yaw direction), the support member 1
3y slides relative to the horizontal portion of the L-shaped shaft 14.

The right shoulder portion of the support frame 72 (that is, the coil 79)
A light projecting element 76p of a position detecting means for detecting the displacement of the support frame 72 in the pitch direction is housed in a case 72pa provided at a position (adjacent position of p), and a rear surface side opening of the case 72pa is provided with a terminal. The lid 77p is attached.

The support frame 72 is provided in the case 72ya provided at the lower left corner of the support frame 72 (position directly below the coil 79y).
Of the position detecting means for detecting the displacement of the yaw direction of the
6y is accommodated, and a lid 77y with a terminal is attached to the rear side opening of the case 72ya.

The correction lens 71 to be attached to the support frame 72 is held by a cylindrical holding cylinder 11, and the holding cylinder 11 is inserted into the cylindrical mounting portion of the support frame 72 to form a "patchon mounting" structure. Thus, it is detachably attached to the support frame 72. That is, in the cylindrical holding cylinder mounting portion 72 a of the support frame 72, a flexible (radially elastic in the radial direction) is arranged along an inscribed circle having a diameter slightly smaller than the outer diameter of the holding cylinder 11. 3 claws 72d are provided, and when the lens 71 is mounted on the support frame 72, the holding cylinder 11 is overcome from the resistance of the claws 72d from the front of the support frame 72 to support the support cylinder 72. When it is pushed into the cylindrical holding tube mounting portion 72a of the frame 72, the claw 72d engages with the outer peripheral surface and the rear end of the holding tube 11 and holds the holding tube 11 so that it does not fall off.

The light receiving element 78p such as PSD, which is the light receiving element of the pitch direction position detecting means of the support frame 72, is attached to the mask 715p with a vertically long slit, and the attachment opening 12 on the upper right side of the main plate 12 together with the mask 715p.
It is soldered to pa and arranged so as to face the light projecting element 76p.

Similarly, a light receiving element 78y such as PSD, which is a light receiving element of the yaw direction position detecting means of the support frame 72, is attached to the mask 715y with a horizontally long slit, and together with the mask 715y, is attached to the attachment opening 12ya on the lower left side of the main plate 12. It is soldered and arranged so as to face the light projecting element 76y.

Small shallow recesses 72i (three support frames 72 in FIG. 1) are provided on each of the front surface and the rear surface of the support frame 72.
(Only the concave portion on the front surface is shown) is formed, and a small ball 711 is rotatably held in each of the concave portions 72i with its half exposed.

On the other hand, three projecting surfaces 12c and 17a are formed on the front surface of the main plate 12 and the rear surface of the mask 17 at the positions corresponding to the positions of the small balls 711. ), The exposed portion of the small sphere 711 abuts on the projecting surface 17a on the front side of the support frame 72 and can roll on the surface 17a. On the rear side of the support frame 72, the small sphere 711 is exposed. The portion abuts on the protruding surface 12c of the main plate 12 so that the surface 12c can roll. That is, the small balls 711 constitute a spacer and a plane rolling bearing for minimizing mutual friction between the support frame 72 and the base plate 12 and the mask 17 and maintaining a predetermined gap therebetween. Further, this structure restricts the support frame 72 from moving in the optical axis direction.

An annular disc-shaped rigid printed circuit board (hard board) 15 is detachably attached to the rear surface of the main plate 12 by screws (not shown) inserted into the holes 15d. A connector 15a for connecting the flexible cable 16 is provided. The back surface of the substrate 15 (ground plate 1
2) a group of soldering lands 15c connected to a circuit on the board 15 and a lead insertion hole 15
b, the land portion 15c and the lead insertion hole 15b of one group are arranged corresponding to the arrangement position of the pitch direction position detecting means (the light projecting element 76p and the light receiving element 78p) and the other group. The land portion 15c and the lead insertion hole 15b are provided with a yaw direction position detecting means (light projecting element 76y and light receiving element 78).
It is arranged corresponding to the arrangement position of y).

Then, the lead insertion hole 15 of each group
The terminals of the light receiving elements 78p and 78y are soldered to b, and the light projecting element 76p is attached to the land portion 15c of each group.
And 76y and the polyurethane-coated copper wires that connect the coils 79p and 79y. The polyurethane-coated copper wire is pulled out forward through two lead lead-out holes 12f penetrating the main plate 12, and the case lid 77 is inserted.
connected to terminals on p and 77y.

The length of the three pillars 12h projecting from the front surface of the main plate 12 is designed to be slightly longer than the dimension of the support frame 72 in the optical axis direction, and the length of the tip 12h is not large. A hole 12i for screwing the illustrated screw is opened.

The column body 12h is provided on the cover 17 which also serves as a light-shielding mask.
A screw insertion hole 17b aligned with the hole 12i of the cover 12 is provided so as to penetrate the screw insertion hole 17b of the cover 17 and the hole 12i of the column 12h after the support frame 72 is mounted on the main plate 12 when the device is assembled. The cover 17 and the base plate 12 are joined by screwing in screws (not shown).

In the structure of the improved image stabilizing apparatus according to the present invention, the L-shaped shaft 14 and the groove-shaped supporting members 13y and 13p supporting the shaft 14 are used as the structure for supporting the supporting frame 72 on the main plate 12. Since the shaft 14 has the bent portion 14a because the shaft 14 has the bent portion 14a, the support frame 72 is driven when the support frame 72 is driven. There is a risk that it will also rotate around the optical axis. Therefore, in the device of the present invention, in order to avoid such a risk, the shaft 14 is designed with the following considerations.

That is, the natural frequency determined by the elasticity of the bent portion 14a and the total mass of the support frame 72 (mass including the holding barrel 11 and the correction lens 71) is 300 Hz as shown in FIG. 3 (a). The above is set. This is shown in Figure 3.
Since the shake correction drive band A by the support frame 72 shown in (b) is up to 100 Hz (camera shakes such as 1 to 1
Although it is a 0 Hz band, it is necessary to widen the band to 100 Hz in order to accurately correct camera shake). This is because it rolls around the axis.

In the device of the present invention, the spring constant of the bending portion 14a is calculated back from the natural frequency determined based on the above-mentioned reason, and the material and size of the shaft 14 are designed so as to be the spring constant. There is.

<Embodiment 2> FIG. 4 is an exploded perspective view of an image blur preventing device according to a second embodiment of the present invention. In the figure, the components indicated by the same reference numerals as those in FIG.
Since it is the same as the constituent element of the apparatus of No. 2, the description thereof will be omitted unless necessary.

In the structure of this embodiment, the screw 72j is formed on the inner peripheral surface of the lens holding cylinder mounting portion 72a of the support frame 72, and the same screw 11 is formed on the outer peripheral surface of the lens holding cylinder 11.
Since a is formed, when the lens 71 is attached to the support frame 72, the lens holding cylinder 11 is attached to the attaching portion 72a.
Just screw it in. Since the lens can be attached to the support frame 72 in this way, the lens attachment work can be performed after the assembly of the device is completed, and therefore the lens 71 may be soiled or scratched during the assembly process. Disappear.

Further, in the structure of this embodiment, one supporting member 13p for the L-shaped shaft 14 is adapted to be fastened with the screw 723 to the screw hole 12g provided in the base plate 12, and the other supporting member 13p. The member 13y is fastened with a screw 723 to a screw hole 72k provided in the support frame 72. Therefore, the support members 13p and 13y can be fixed more firmly than the structure of the first embodiment.

Further, in the structure of this embodiment, the mask 17 is fastened to the tip surface of the column 12h of the base plate 12 with the disc spring 18 interposed therebetween. Therefore, the pillar 12h and the mask 1
Since the distance between the mask 17 and the base plate 12 can be adjusted by adjusting the screwing both of the screws for fastening the small balls 711, the small balls 711 pressed into the surface of the support frame 72.
The amount of press-fitting or the amount of protrusion can be adjusted, and as a result, the play in the optical axis direction of the support frame 72 and the drive load can be finely adjusted.

<Embodiment 3> FIG. 5 is an exploded perspective view of an apparatus according to a third embodiment of the present invention, and FIGS. 6 to 8 are explanatory views related to the details of the structure of the apparatus of the present embodiment. . In FIG. 5, the same components as those of the first and second embodiments are the same as those of FIG.
Are indicated by the same reference numerals, and the description of these components will be omitted unless necessary.

In this embodiment, the support frame 72 is provided with a bearing portion for supporting the horizontal portion of the L-shaped shaft 14,
The base plate 12 is provided with a protrusion for fastening the yokes 712p and 712y, a flexible substrate is used for connecting the terminals of the light projecting element and the coil, and the hard substrate 15, and the lens. This is different from the first and second embodiments in that the holding cylinder is attached to the support frame with screws.

The following is a more detailed description.

In the configuration of this embodiment, two ears 11b having screw insertion holes are provided outside the lens holding cylinder 11, and the screws inserted in the screw insertion holes are provided on the front surface of the support frame 72. The holding cylinder 11 is screwed into two screw holes 72l formed in (the surface facing the mask 17).
Are attached to the support frame 72. According to this attachment structure, the holding cylinder 11 can be attached to the support frame 72 in a shorter time than the attachment structure of the second embodiment.

A bearing portion 72n for supporting the horizontal portion of the L-shaped shaft 14 is formed at the lower end of the support frame 72. The bearing portion 72n is the first concave portion 7 opened on the front surface of the support frame 72.
2p and the second concave portion 72q opened on the rear surface of the support frame 72.
The dimensions and arrangement of the recesses 72p and 72q will be described below with reference to FIGS. 6 and 7.

FIG. 6 is a view of the bearing 72n viewed from the rear side of the support frame 72. FIGS. 7A and 7C are side views, and FIG. 7B is the front of the support frame 72. FIG. 7D is a front view seen from above, and FIG. 7D is a rear view seen from behind the support frame 72.

As shown in FIG. 7B, the support frame 72
The vertical dimension H1 of the first recess 72p that opens to the front surface of the
Is a dimension that fits into the outer diameter of the shaft 14, and as shown in FIG. 7D, the vertical dimension H2 of the second recess 72q is larger than H1 (H1> H2).

Further, as shown in FIGS. 7C and 7A, the depth of the first recess 72p (the length in the optical axis direction from the front surface of the support frame 72) D1 and the depth of the second recess 72q. Sum (length in the optical axis direction from the rear surface of the support frame 72) D2 (D1 + D
2) is the thickness D of the support frame 72 in the optical axis direction and the outer diameter d of the shaft 14.
Is set to be equal to or slightly larger than the sum (D + d). That is, (D1 + D2) ≧ (D + d).

Therefore, as shown in FIG. 7C, the concave portion 7
The length D3 of the rectangular hole 72s formed by the intersection of 2p and the recess 72q in the optical axis direction is equal to or larger than the outer diameter d of the shaft 14 (D3 ≧ d). Therefore, when the horizontal portion of the shaft 14 is inserted into the square hole 72s, the support frame 72 has a slight play in the optical axis direction with respect to the horizontal portion of the shaft 14, so that the support frame 72 is attached to the horizontal portion of the shaft 14. The support frame 7 is prevented from being fitted to both the horizontal portion and the vertical portion.
2 is supported without play in the vertical direction, and is prevented from rotating around the optical axis.

In this embodiment, two pairs of yoke mounting portions 12ip and 12iy protruding from the front surface of the base plate 12 are formed on the base plate 12, and the yoke mounting portions 12ip and 12i are formed.
A threaded hole for attachment is formed on each tip surface of y.

Further, the yokes 712p and 712y are provided at their front end yokes with the mounting portions 12ip and 12ip.
ears corresponding to iy are formed, and screw insertion holes 712pa and 712ya are formed in the ears,
The screws inserted into the screw insertion holes 712pa and 712ya are fixed to the yokes 712p and 712y by screwing the screws into the screw holes of the mounting portions 12ip and 12iy.

By the way, the mounting structure of the yoke is designed in consideration of the following points. This point will be described with reference to FIG.

As shown in FIG. 8C, the yoke 712p (only one of the yokes will be described below) has its tip open in the direction of arrow a before attachment. This is due to the draft in the pressing process. The yoke 712p having such a shape is fastened to the tip of the yoke mounting portion 12ip of the base plate 12 as shown in FIG. 8A, and screws are attached so that the respective pole plates 712p1 to 712p3 are parallel to each other. Since it will be tightened in the screw hole of
Each of the 2p electrode plates generates a force to separate from each other in the optical axis direction, and is strongly stretched between the front surface of the base plate 12 and the screw head of the fastening screw.

Therefore, the following effects are brought about. That is, when the rearmost electrode plate of the yoke 712p is fastened to the main plate 12 as in the first and second embodiments, the yoke 712p is attached to the main plate 12 by a cantilevered support structure as shown in FIG. 8B. Since it is supported, it has a spring property of displacing in the direction of the arrow b. Therefore, the yoke has a low rigidity in the direction orthogonal to the optical axis (left-right direction). Therefore, the drive characteristics of the support frame 72 are deteriorated. This is because when the support frame 72 is driven in the direction orthogonal to the optical axis, the support frame is driven by the repulsive force of the coil 79p with respect to the yoke 712p. Therefore, if the rigidity of the yoke is low, the force generated by the coil is weakened by the yoke. This is because it will be impossible to perform accurate driving.

Therefore, it cannot be driven at a frequency close to the natural frequency in the direction of arrow b. In order to set the natural frequency to the high frequency side far from the frequency band of camera shake, it is necessary to increase the rigidity of the yoke, which causes an increase in the size and weight of the yoke. .

Therefore, by adopting the mounting structure for suppressing the elasticity of the yoke as in this embodiment, the supporting frame 7
2 can be accurately driven, and the yoke can be prevented from increasing in size and weight.

In Examples 1 and 2, the hard substrate 15
The electrical connection between the terminals of the case lids 77p and 77y (the terminals of the coils 79p and 79y, the terminals of the light projecting elements 76p and 76y) was made with a polyurethane-coated copper wire. Since there are as many as eight soldering wires, which causes incorrect connection and also has poor workability, there is room for further improvement.

This embodiment provides an image blur prevention device improved over the embodiments 1 and 2 by using the flexible substrates 19p and 19y instead of the polyurethane coated wire.

In FIG. 5, reference numerals 19p and 19y denote flexible substrates having a weak rigidity, and one end portions 19pa and 19y.
a is welded to the portions 15ep and 15ey of the hard substrate 15, respectively.

The other ends 19pb and 19yb of the flexible boards 19p and 19y are screw holes 72up and 7p of the support frame 72.
2uy is screwed into the 2uy through holes 19pc and 19yc of the substrate, and is screwed to the end portions 19pb and 19yc.
In yb, the terminals of the coils 79p and 79y and the light projecting element 76
Soldered to p, 76g terminals. Light projecting element 76p,
76y is soldered to the flexible substrates 19p and 19y in advance, and may be pushed into the holes 76pa and 76ya when being screwed to the support frame 72.

As described above, the electrical components on the support frame 72 and the substrate 15 can be connected easily and accurately.

The flexible board 16 for signal transmission between the hard board 15 and the electronic circuit in the lens barrel (not shown) is also welded to the connecting portion 15d of the hard board 15 at the end 16a.

In this way, the flexible boards 19p, 19
Since y and 16 are welded to the hard substrate 15, the connection can be made in a small area and in a small space as compared with the known comb-teeth state soldering.

Further, by connecting the flexible substrates 19p and 19y to the support frame 72 by screwing them, the case lid 77 is connected.
The bonding process for p and 77y can be omitted, and the process can be shortened. On the hard substrate 15, the light receiving element 78p,
78y is soldered to the light receiving elements 78p and 78y.
The above-mentioned package is fitted into the square holes 12kp and 12ky of the base plate 12, and the hard substrate 15 is attached to the base plate 12.

In the first and second embodiments, the light receiving elements 78p and 78y are adhered to the fixed base plate 12, the hard substrate 15 is attached from the back of the base plate 12 with the holes 15e and the long holes 15f positioned, and then the terminals of the light receiving device are attached. However, in this configuration, there is no positioning hole on the hard substrate 15, and instead, the packages of the light receiving elements 78p and 78y are used for the positioning, and the hard substrate 1 is mounted with screws (not shown).
5 is fixed to the fixed base plate 12 with screws.

Even with such a configuration, the light receiving elements 78p, 78y
Is accurately positioned, and the light receiving elements 78p and 78y are mounted before the hard substrate 15 is attached to the fixed base plate 12.
Since it can be soldered, the workability is good, and the hard substrate 15 can be easily removed from the fixed base plate 12 even after completion.

Further, in the present embodiment, there are four recesses 72i for receiving the small balls 711, which is one place more than in the first and second embodiments (eight places in total including the back surface). This is a small ball 7
The regulation in the optical axis direction by 11 is usually 3 for the surface regulation.
It is good to have four places, but four places are intentionally set to prevent duplicates.

Considering the precision of finished parts,
This is because, in the case of the three-point regulation, it is necessary to allow a slight amount of backlash, and therefore, the effect of suppressing the above-mentioned backlash can be obtained by overlapping regulation.

The bearing portion 12j for the L-shaped shaft 14 on the fixed ground plate 12 has the same structure as the bearing portion 72n of the support frame 72, and both the bearing portions 72n and 12j can have a vertical die-cutting structure. , Simplification of the mold, and it is possible to take multiple pieces.

As described above, the device of this embodiment has the following features.

1. The bearing is integrated with the support frame or the fixed base plate, and is shaped so that it can be molded with a split mold.

2. The lens holding cylinder can be screwed from the front in the final assembly process of the correction device.

3. The yoke is precharged and sandwiched.

4. The electric connection to the electric components on the support frame is connected by a flexible substrate.

5. Positioning of the flexible substrate is performed by the package of the light receiving element.

With the features of the above items, the assembling workability and the driving accuracy can be improved.

The shape of the flexible boards 19p and 19y is not limited to the shape shown in FIG. 5, and the movement of the support frame 72 is not hindered by having a plurality of bent portions 19pd1 and 19pd2 as shown in FIG. 9A, for example. A bellows structure may be used, and its planar shape is extremely small and simple as shown in FIG. 9 (b).

The hard substrate 15 may be a flexible substrate, but it does not need to be as stiff as the flexible substrates 19p and 19y and can be made stronger accordingly.

<Embodiment 4> FIG. 10 shows a fourth embodiment of the present invention. This embodiment is a partially modified embodiment of the third embodiment shown in FIG. Therefore, the constituent elements shown in FIG. 10 with the same reference numerals as those in FIG. 5 are the same as the constituent elements of the third embodiment shown in FIG. 5, and unless a description about these constituent elements is necessary. Omit it.

The structure of this embodiment differs from the third embodiment of FIG. 5 in the following points.

The ears 11b of the lens holding cylinder 11 are screwed to the support frame 72 at three places via the disc springs 11c, and the inclination of the holding cylinder 11 and the support frame 72 is adjusted by the screwing amount of the fastening screw. It is possible. As previously mentioned,
Since the tilt of the shake correction lens requires extremely precise mounting, by configuring such tilt adjustment is possible,
Lens mounting accuracy can be guaranteed.

A flexible substrate 110 is used instead of the hard substrate 15, and its ear portions 110p and 1p are used.
The light receiving elements 78p and 78y are soldered to 10y. The ears 110p and 110y are the flexible substrate 11
There is some freedom due to bending with respect to zero. Flexible substrates 19p and 19y (the same as those in the embodiment of FIG. 5), which are weaker than the flexible substrate 110, are welded to the flexible substrate 110 and the positioning holes 110a and 110 are formed.
It is fastened to the base plate 12 by a screw (not shown) inserted through b.

As shown in FIG. 13B, the light receiving element 78p (the light receiving element 78y is the same, so the element 7
8y is omitted in the drawing), and positioning ears 78pa and 78pb connected to elements inside the package are provided, and holes 78pa formed in the ears 78pa and 78pb.
Positioning is carried out by fitting pins 12lp1 and 12lp2 protruding from the back surface of the base plate 12 into the 1 and U-shaped grooves 78pb1.

In the structure of this embodiment, the flexible substrate 1
Since 10 is fixed to the base plate 12 and the light receiving elements 78p and 78y are also fixed to the base plate 12, overlapping fixing is performed, but since the ears 110p and 110y have a degree of freedom,
Since the mutual mounting positions of the flexible substrate 110 and the light receiving elements 78p and 78y can be adjusted, there is no fear that the parts will be deformed due to the contradiction of the mounting positions of the both.

<Fifth Embodiment> FIG. 11 shows a fourth embodiment of the present invention. This embodiment is a modification of each of the third embodiment of FIG. 5 and the fourth embodiment of FIG. Therefore, description of the configurations described in the embodiment of FIG. 5 and the embodiment of FIG. 10 will be omitted.

This embodiment is different from the fourth embodiment in FIG. 10 in that the lens holding cylinder 11 is used for adjusting the tilt of the lens optical axis.
Between the support frame 72 and the support frame 72
It is configured to be carried out between.

That is, holes 12s that open to the outer peripheral surface side are formed in the projections 12n provided at three positions on the back surface of the main plate 12, and the eccentricity for connecting the lens barrel (not shown) and the main plate 12 is formed. The small diameter portion 111a of the pin 111 is inserted into the hole 12s, and the eccentric large diameter portion 111b of the pin is fitted into the hole 200a of the connecting piece 200 of the lens barrel (not shown). Therefore, the inclination of the base plate 12 can be finely adjusted by rotating the eccentric pin 111 when the lens barrel and the base plate 12 are connected. After the fine adjustment is completed, the set screw 111c is screwed into the screw hole on the bottom surface of the hole 12s through the screw insertion hole penetrating the pin 111 to fix the eccentric pin 111 so as not to move.

On the hard substrate 15 used in this embodiment, the holes 78pa of the ears 78pa of the light receiving elements 78p and 78y (only a detailed view of the element 78p is shown in the figure).
1 pins 15 gp and 15 gy (15
gy is provided with a pin) for fitting into a hole in the ear portion of the light receiving element 78y, and the elements 78p and 78y are provided with the pin 1
It is soldered to the hard substrate 15 at 5 gp and 15 gy. Also, the ears 78pb of the elements 78p and 78y.
And 78yb are positioned by inserting positioning pins 12lp2 and 12ly2 (12ly2 is not shown) of the base plate 12 into the U-shaped groove pb1 of the base plate 12, whereby the hard board 15 also inserts the pin 15gp into the hole 12mp of the base plate 12. It is positioned and screwed to the main plate 12.

In the first to fourth embodiments, the structure of the locking means of the support frame 72 (shown in the conventional example of FIG. 15) is not shown, but this embodiment is improved. The locking means is displayed.

In FIG. 12, reference numeral 112 denotes a synthetic resin lock arm for locking the support frame 72, which includes a screw insertion hole 112a, a square hole 112f, and a vertically elongated hole 112e.
Are pierced, and the tongue 112c and the pin 112 are provided on the back surface.
and b are projected.

The lock arm 112 has a screw insertion hole 112a.
The screw (not shown) inserted in the
It is attached to the main plate 12 by being screwed into the screw hole of t, and is arranged immediately in front of the projecting piece 72w of the support frame 72.
Is inserted into the hole 72v of the projecting piece 72w.

Reference numeral 719 is a coil of an electromagnetic plunger for driving the lock arm 112. Inside the coil 719, there is a rod or slider 71 which is driven in the axial direction.
9a is inserted. The coil 719 is engaged with and positioned by the projecting pin 12r of the flat surface portion 12p on the front surface of the main plate 12, and the screw hole 1 provided in the flat surface portion 12p.
The flat portion 12p is formed by a screw (not shown) screwed into 2q.
It is fixed to.

The slider 719a is locked to the tongue piece 112c on the back surface of the lock arm 112, and the slider 719a moves up and down, so that the lock arm 112 has a hole 112a.
It will be swung in the direction of the arrow c around the center. The narrow portions 112d on both sides of the square hole 112f penetrating the lock arm 112 have a function as a spring, and the lock arm 112 can be largely bent in the direction of arrow c due to the bending spring force of the portion 112d. it can. A protruding pin 12u of the main plate 12 is slidably inserted into the vertically elongated hole 112e of the lock arm 112, and the pin 12u prevents the lock arm 112 from rolling laterally.

When the slider 719a is moved upward (when the slider 719a is entirely retracted into the coil 719), the pin 112b of the lock arm 112 is moved to the support frame 7 by the support frame 7.
When the slider 719a is pushed downward from the inside of the coil 719, the pin 112b of the lock arm 112 is inserted into the hole 72v of the support frame 72 and is pulled out from the hole 72v of the support frame 72. Is locked so that it cannot move.

According to the locking means shown in the present embodiment, not only the number of parts and the size can be made smaller than those of the conventional locking means 61 (see FIG. 15), but also a drawback of the conventional locking means. Mechanical lock arm 72 in the axial direction of the screw 722
Since there is no backlash of 1, the support frame 72 can be firmly fixed when the support frame 72 is in the locked state.

<Embodiment 6> FIG. 12 shows a sixth embodiment of the present invention. This embodiment is a partially modified embodiment of the fifth embodiment shown in FIG. 11, and the only difference from the fifth embodiment is the structure of the locking means, so the description of the structure other than the locking means will be omitted. .

In this embodiment, the lock arm 112, which is a component of the locking means, is partially different from the structure of FIG. That is, the metal plate spring 113 is integrally formed on the lock arm 112 of this embodiment instead of forming the portion 112d, and the screw insertion hole 113a is formed at the lower end of the plate spring 113. The lock arm 112 is fixed to the base plate 12 by screwing the screw inserted into the hole 113a into the screw hole of the protrusion 12t of the base plate 12.

As in the present embodiment, the spring portion of the lock arm 112 is made of a metal plate spring so that there is no fear of aging (deterioration), and a lock arm with a small temperature change can be obtained. It is possible to configure a locking means that does not change and has little temperature change.

<Embodiment 7> FIG. 13 shows an example in which a variable apex angle prism is used as the correction optical means.

In FIG. 18B, 51 is a liquid having a high refractive index (for example, a liquid such as silicone resin), which is a space surrounded by two flat glass plates 52p and 52y and a bellows 53 of polyethylene film. It is sealed to prevent air bubbles from entering. The flat glass plate 52p is a pitch holding frame 54p
And the flat glass plate 52y is held by a yaw holding frame 54y, and both holding frames 54p and 54y constitute a correction optical element holding body.

The hole 54pa of the pitch holding frame 54p is rotatably supported about the pitch shaft 55p.
It is screwed into the hole 56pa of p.

On the other hand, the yaw holding frame 52y is in contact with the flange portion 56ya of the yaw support frame 56y which is rotatably supported around the yaw shaft 55y.

Therefore, the correction optical element holder is sandwiched between the screw and the flange portion 56ya, and is sandwiched while being charged by the spring force of the bellows 53.

Coils 57p and 57y are respectively supported on both support frames 56p and 56y, and both coils 57p and 57y are supported.
Since p and 57y are arranged in the closed magnetic circuit formed by the magnets 58p and 58y, respectively, the coil 5
Pitch support frame 56p and yaw support frame 56y are moved to the respective shafts 5 by applying currents to 7p and 57y.
It is rotated about 5p and 55y.

Displacement detecting light-receiving elements 511p and 511y are attached to both support frames 56p and 56y.
The light receiving elements 511p and 511y are infrared light emitting elements 512.
p and 512y generate electric output in accordance with the incident amount of infrared light emitted through the holes 56pb and 56yb, and the supporting frames 56p and 56y respectively have their respective axes 55p and 55y.
The rotational displacement when rotated about y is detected. The drive control circuit (not shown) includes the light receiving elements 511p and 511y.
The image blur correction is performed by controlling the drive currents to the coils 57p and 57y according to the output of the.

In the above-mentioned structure, the pitch support frame 56
When p rotates around the pitch axis and the flat glass plate 52p tilts around the pitch axis 55p, the light beam passing through the liquid 51 having a high refractive index is decentered in the direction of arrow 513p, and the yaw support frame 56y rotates around the yaw axis. Turn into a flat glass plate 5
When 2y is tilted around the yaw axis, the light beam is decentered in the direction of arrow 513y.

The greatest feature of such a variable apex angle prism is that the optical axis can be decentered regardless of the type of optical system before and after the variable apex angle prism in the optical axis direction. Even if the image blur prevention device is attached to the front surface of any lens, the optical axis can be corrected.

As described above, the image blur prevention device using the variable apex angle prism can be attached to and detached from the optical device, so that the device can be attached in the final step of assembling the optical device. It is possible to prevent contamination of the optical element of the prevention device.

<Correspondence between Invention and Embodiment> The “blur correction means” described in the claims corresponds to the “optical element holding frame 72” of the embodiment.

The "first shaft support means" described in the claims corresponds to the "support member 13y" of the first and second embodiments, and the "second shaft support means" described in the claims is the "support member 13y" of the first and second embodiments. Support member 1
3p ”.

[0266] The "first recess" in the claims is the same as in the third embodiment.
6 is the “recess 72p”, and the “second recess” is the “recess 72q” in the embodiment.

The "support shaft" in the claims corresponds to the "L-shaped member 14" of the embodiment.

The "printed circuit board" in the claims is the "printed circuit board (hard board) 15" of the embodiment,
The "first flexible printed circuit board" described in the claims is the "flexible boards 19y and 19p" of the embodiment.

The "detection means" described in the claims is the "light receiving elements 78p and 78y" of the embodiment.

The "locking means" in the claims corresponds to the "lock arm 112" of the embodiment and the "electromagnetic plunger (coil 719 and slider 719a) for driving the arm,
The "locking member" described in the claims is the "lock arm 1" of the embodiment.
12 ”.

The "coupling means" described in the claims is the "eccentric pin 111, screw 111c, protrusion 12n" of the fourth embodiment (FIG. 12).
Corresponding to the part composed of and.

The above is the correspondence relationship between each configuration of 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 the configuration of the embodiments It goes without saying that any structure may be used as long as it can achieve the function of.

Further, the respective embodiments may be combined as necessary, or the constituent elements of the respective embodiments may be combined as necessary.

The present invention configures the device whether the whole or part of the configuration of the claims or the examples forms one device or is combined with another device. It may be an element that does.

The present invention is applied to various types of cameras such as a single-lens reflex camera, a lens shutter camera, a video camera, etc., as well as optical devices and other devices other than the cameras, and further to those cameras, optical devices and other devices. Equipment,
Alternatively, it can also be applied to the elements constituting these.

[0276]

According to the first aspect of the present invention, since the optical element may be attached to the blur correction means in the final step of the assembly process of the image blur prevention device, the optical element is damaged or soiled in the assembly process. There is no fear of

According to the second aspect of the present invention, since the holding cylinder can be detachably attached to the shake correcting means by the mutual engaging means, the shake correcting is performed in the final step of the assembly process of the image shake preventing apparatus. The optical element can be attached to the means.

According to the invention of claim 3, the holding barrel can be attached to the optical element attachment portion so that the inclination in the optical axis direction can be adjusted. Therefore, when attaching the image blur prevention device to optical equipment, The optical axis and the optical axis of the optical device can be adjusted.

According to the invention of claim 4, the holding barrel can be removably attached to the optical element mounting portion of the blurring correction means. Therefore, in the final step of the assembly process of the image blurring prevention apparatus, the blurring correction means is attached. The optical element can be attached to.

According to the fifth aspect of the present invention, since the optical element may be attached to the blur correction means in the final step of the assembly process of the image blur prevention device, the optical element is damaged or soiled in the assembly process. There is no fear.

According to the sixth aspect of the present invention, since the optical element may be attached to the blur correction means in the final step of the assembly process of the image blur prevention device, the optical element is damaged or soiled in the assembly process. There is no fear.

According to the invention of claim 7, since the shake correcting means is provided with the detachable shaft supporting means, the molding die of the shake correcting means is simplified and the molding cost can be reduced. it can. Further, since the optical element may be attached to the blur correction unit in the final step of the assembly process of the image blur prevention device, there is no risk of the optical element being damaged or soiled in the assembly process.

According to the eighth aspect of the present invention, since the shaft support means is not a hole but a mere recessed portion, the structure of the shake correction means is simple, and therefore the molding die of the shake correction means is simple. Can be simplified and the molding cost can be reduced.

According to the ninth aspect of the present invention, since the shaft support means is not a hole but a simple recess, the structure of the shake correction means is simple, and therefore the molding die of the shake correction means is simple. Can be simplified and the molding cost can be reduced.

According to the tenth aspect of the present invention, since the shaft supporting means is made of a member made of a material having a small friction coefficient, which is separate from the shake correcting means, the shake correcting means can be operated smoothly. You can

According to the eleventh aspect of the present invention, since the shake correcting means is provided with the detachable shaft supporting means, the molding die of the shake correcting means is simplified and the molding cost can be reduced. it can.

According to the twelfth aspect of the invention, since the shake correcting means is provided with the detachable shaft supporting means, the molding die of the shake correcting means is simplified and the molding cost can be reduced. it can.

According to the thirteenth aspect of the present invention, since the shake correction means is supported by the stationary member so as to be easily movable in the first and second directions via the support shaft, accurate shake correction is possible. You can take action.

According to the fourteenth aspect of the present invention, since the first shaft supporting means is detachably attached to the shake correcting means, the molding die of the shake correcting means can be simplified, The molding cost can be reduced.

According to the fifteenth aspect of the present invention, the first shaft support means is detachably attached to the shake correction means, and the second shaft support means is detachably attached to the stationary member. Therefore, the structure of the blur correction unit and the structure of the stationary member can be simplified, and an image blur prevention device with low manufacturing cost can be realized.

According to the sixteenth aspect of the present invention, at least one of the first shaft supporting means and the second shaft supporting means can be attached and detached very easily, so that the device can be easily assembled and disassembled. Therefore, the manufacturing cost can be reduced.

According to the seventeenth aspect of the present invention, at least one of the engagement relationship between the support shaft and the first shaft support means and the engagement relationship between the support shaft and the second shaft support means is the optical axis. Since a predetermined play is provided in the direction of, it is possible to prevent the restraint force on the shake correcting means from becoming excessive and prevent the drive load of the shake correcting means from becoming excessive. it can.

According to the eighteenth aspect of the present invention, it is possible to prevent the shake correcting means from rolling around the optical axis during the operation of the shake correcting means, and to prevent the vibration of the shake correcting means from occurring. Can be suppressed.

According to the nineteenth aspect of the present invention, since the flexible printed circuit board is used instead of the lead wire for supplying power or transmitting signals to the shake correcting means, the soldering work is reduced and the wiring connection is defective. It is possible to realize an image blur prevention device without any blur.

According to the twentieth aspect of the invention, since the hard printed circuit board is attached to the base plate, the electrical mounting work of the device can be performed more easily than the conventional device.

According to the twenty-first aspect of the invention, since the first flexible printed circuit board for wiring is made softer than the second flexible printed circuit board, the electrical connection between the blur correction means and the ground plane is reduced. Connection work can be easily performed.

According to the twenty-second aspect of the invention, since both the flexible printed boards are welded in advance, the electrical mounting work on the device can be simplified.

According to the twenty-third aspect of the invention, the flexible printed circuit board can be easily connected.

According to the twenty-fourth aspect of the present invention, since the work such as processing of the flexible printed circuit board is unnecessary in the electric mounting process of the device, the electric mounting work can be easily performed.

According to the twenty-fifth aspect of the present invention, since the detecting means and the printed circuit board can be simultaneously positioned on the base plate, the number of work steps for mounting the electric parts on the apparatus is reduced, and the cost is reduced. There is.

According to the twenty-sixth aspect of the present invention, the printed circuit board and the detecting means can be positioned on the base plate simply by fitting the detecting means in the hole of the printed circuit board, so that the electrical parts of the device are mounted. The process can be simplified.

According to the twenty-seventh aspect of the invention, by inserting the pin into the hole of the detecting means, the detecting means can be accurately positioned on the base plate, so that the electrical mounting work on the device can be easily performed.

According to the twenty-eighth aspect of the present invention, the detection means can be accurately positioned on the base plate or the printed circuit board by inserting the pin into the hole of the detection means. Therefore, the electrical mounting work on the device is simplified. It can be carried out.

According to the twenty-ninth aspect of the invention, since the yoke is attached to the main plate in a state in which a compressive force is applied in the direction in which the electrode plate interval of itself becomes narrow, the shake correcting means and the yoke are provided. There is no risk of rattling between the
It is possible to cause the blur correction means to perform an accurate operation.

According to the thirtieth aspect of the present invention, since the coil can be quickly attached to the shake correcting means, the assembly cost of the apparatus can be reduced.

According to the thirty-first aspect of the invention, since the filling groove is provided, the amount of the adhesive adhered to the outer surface of the shake correction means is reduced, and the adhesive may adhere to other members. Less.

According to the thirty-second aspect of the invention, since the light-shielding mask also serves as the regulating means, the number of constituent members can be reduced.

According to the thirty-third aspect of the invention, since the position adjusting means is provided, the load in the moving direction of the shake correcting means can be optimally adjusted for each device.

According to the thirty-fourth aspect of the invention, the frictional load of the shake correcting means can be finely adjusted by the spring and screw structure.

According to the thirty-fifth aspect of the invention, since the locking arm is biased by the spring in the direction of approaching and retracting with respect to the shake correcting means, the shake correcting means is more reliable than the conventional locking means. Can be locked.

According to the thirty-sixth aspect of the invention, since the locking arm itself is a spring, the number of parts is small and the shake correcting means can be locked more reliably than the conventional locking means.

According to the thirty-seventh aspect of the invention, since the locking arm is made of a synthetic resin material, a highly durable locking means can be constructed.

According to the thirty-eighth aspect of the invention, since the optical axis of the image blur prevention device can be adjusted to an arbitrary inclination with respect to the optical axis of the optical device, the image blur prevention device can be easily attached. .

[Brief description of drawings]

FIG. 1A is an exploded perspective view of an image blur prevention device according to a first embodiment of the present invention. FIG. 7B is a partial cross-sectional view showing the mutual engagement state of the optical element support frame 72, the light shielding mask 17, and the base plate 12 when the assembly of the apparatus is completed. (C) is the L of the device
The perspective view which showed the back surface of the support member 13y of the shaping member 14.

2 is a cross-sectional view showing a mounting structure of a coil 79p mounted on an optical element support frame 72 of the image blur prevention device of FIG.

FIG. 3A is a diagram showing a shake correction driving band by the optical element support frame. FIG. 6B is a diagram showing a frequency band of a natural frequency determined by the total mass of the L-shaped member 14 and the support frame.

FIG. 4A is an exploded perspective view of an image blur prevention device according to a second embodiment of the present invention. FIG. 7B is an enlarged side view showing a connecting portion between the light-shielding mask 17 and the projecting column 12h of the main plate 12 when the assembly of the apparatus is completed. FIG. 6C is a perspective view showing the back surface of the supporting member 13y of the L-shaped member 14 of the apparatus.

FIG. 5 is an exploded perspective view of an image blur prevention device according to a third embodiment of the present invention.

FIG. 6 is a schematic perspective view showing an enlarged part of a supporting means of the L-shaped member 14 in the image blur preventing device of the third embodiment.

7 is a diagram showing the structure of the supporting means, FIG.
Is a cross-sectional view of the optical element support frame 72 as viewed from the back side,
5B is a cross-sectional view of the support frame viewed from the front side in FIG.
(C) is a cross-sectional view of the supporting frame as viewed from the side, and (d) is a cross-sectional view of the supporting frame as viewed from the side.

8 is a top view of the image blur prevention device shown in FIG.
5A and 5B are views for explaining the attachment state of the yoke attached to the
(B) is a state of being attached in the structure of FIGS. 1 and 4,
(C) is a state of the yoke before attachment.

FIG. 9 is a perspective view (a) and a front view (b) of a modified example of the flexible printed circuit board 19 used in the configuration of FIG.

FIG. 10A is an exploded perspective view of an image blur prevention device according to a fourth embodiment of the present invention. (B) is an enlarged perspective view for explaining a mounting and positioning structure of the light receiving element 78p on the main plate 12 in the apparatus.

FIG. 11A is an exploded perspective view of an image blur prevention device according to a fifth embodiment of the present invention. (B) is an enlarged perspective view for explaining a mounting and positioning structure of the light receiving element 78p on the main plate 12 in the apparatus.

FIG. 12A is an exploded perspective view of an image blur prevention device according to a sixth embodiment of the present invention. (B) is an enlarged perspective view for explaining a mounting and positioning structure of the light receiving element 78p on the main plate 12 in the apparatus.

FIG. 13A is an exploded perspective view of an image blur prevention device according to a seventh embodiment of the present invention. FIG. 6B is a cross-sectional view showing a state where the optical axis is displaced in the variable apex angle prism. (C) is a partial cross-sectional view of FIG.

FIG. 14 is a diagram for explaining the principle of the image blur prevention device.

FIG. 15 is an exploded perspective view showing an example of a conventional image blur prevention device.

[Explanation of symbols]

11 ... Lens holding cylinder 12 ... Base plate 13y, 13p ... Support member 14 ... L-shaped member 15 ... Printed circuit board 17 ... Light-shielding mask 18 ... Disc spring 16, 19p, 19y ... Flexible printed board 72 ... Optical element support frame 76p, 76y
... Light emitting element 78p, 78y ... Light receiving element 112 ... Lock arm 79p, 79y ... Coil 72ya, 72pa ... Light emitting element housing case 77y, 77p ... Case lid 711 ... Small ball 712y, 712p ... Mask 719 ... Coil (electromagnetic plunger) 719a ... Slider

Claims (38)

[Claims] 1. An image blur prevention device having an optical element that carries an optical element and is capable of being displaced so as to decenter the optical axis of the optical element, wherein the optical element is held by a holding cylinder, An image blur prevention device having a holding barrel mounting structure for detachably mounting the holding barrel to an optical element mounting portion of the blur correction means. 2. The image blur prevention device according to claim 1, wherein the holding barrel mounting structure has mutual engagement means provided on both the holding barrel and the blur correction means. 3. The image blur prevention according to claim 1, wherein the holding barrel mounting structure is configured so that the holding barrel can be mounted on the optical element mounting portion so that the tilt in the optical axis direction can be adjusted. apparatus. 4. The holding cylinder mounting structure is a threaded structure, the optical element mounting portion is configured as a female threaded cylindrical body, and the holding barrel is configured as a male threaded cylindrical body screwed into the female threaded cylindrical body. The image blur prevention device according to claim 1, wherein the image blur prevention device is provided. 5. The holding cylinder mounting structure is a fitting structure, the optical element mounting portion is configured as a first cylindrical body, and the holding cylinder is fitted in the first cylindrical body so as to be insertable and withdrawable. It is configured as a second cylindrical body, and the first cylindrical body is provided with a flexible elastic engagement piece elastically pressed against the outer peripheral portion of the second cylindrical body. The image blur prevention device according to claim 1. 6. The holding cylinder mounting structure is configured as a screw fastening structure using a set screw, and the holding barrel is fastened to the shake correcting means at a screw fastening portion formed on the outside of the holding barrel. The image blur prevention device according to claim 1. 7. A shake compensating means that carries an optical element and is displaceable in a direction orthogonal to the optical axis of the optical element, a shaft support means that is attachable to and detachable from the blur compensating means, and an optical axis with respect to the optical axis. And a supporting shaft that is in sliding contact with the shaft supporting means in a first direction orthogonal to each other, the optical element is held by a holding barrel, and the holding barrel is attached to and detached from an optical element mounting portion of the shake correction means. An image blur prevention device having a holding cylinder mounting structure for enabling mounting. 8. An image blur prevention device having a blur correction unit movable in a first direction parallel to a plane orthogonal to an optical axis, wherein the blur correction unit moves in the first direction when the blur correction unit moves in the first direction. The image forming apparatus further includes a support shaft that slides and guides the shake correcting unit in the first direction, and a shaft supporting unit that is provided on the shake correcting unit so as to be relatively slidable on the support shaft. It is constituted by first and second concave portions formed in the shake correcting means, the first concave portion is opened on the first surface of the shake correcting means, and the second concave portion is formed by the shake correcting means. The support shaft is opened in a second surface opposite to the first surface, and the support shaft is axially slidably supported at a portion overlapping with each other at one end of each of the first and second recesses. Image blur prevention device. 9. The height dimension of at least one of the first and second recesses is a dimension that fits into the outer diameter of the support shaft, and is the depth dimension of the first and second recesses. The sum is equal to the dimension of the shake correction means between the first surface and the second surface in the optical axis direction plus the outer diameter of the support shaft, or the sum of the shake correction means in the optical axis direction. The image blur prevention device according to claim 8, wherein the image blur prevention device is set larger than the above. 10. The shaft support means composed of the first recess and the second recess is composed of a member made of a material having a small friction coefficient, which is separate from the shake correction means. The image blur prevention device according to claim 8 or 9, which is characterized in that. 11. A blur correction unit that is displaceable in a direction orthogonal to the optical axis, a shaft support unit that is detachable from the blur correction unit, and the shaft in a first direction orthogonal to the optical axis. An image blur prevention device, comprising: a support shaft, which is in sliding contact with a support means. 12. The image blur prevention device according to claim 11, wherein the shaft support means is configured to be detachable from the blur correction means. 13. An image blur prevention device having blur correction means movable in first and second directions parallel to a plane orthogonal to an optical axis, wherein the blur correction means moves in the first direction. And a first linear portion for slidingly guiding the blurring correction means in the first direction when moving, and the blurring correction means and the first linear portion when the blurring movement means moves in the second direction. A bent support shaft having a second linear portion that moves in two directions, and a first shaft support that axially slidably supports the first linear portion of the support shaft and that moves with the shake correction means. And a second shaft support unit that supports the second linear portion of the support shaft so as to be slidable in the axial direction and is fixed to a stationary member. . 14. The image blur prevention device according to claim 13, wherein the first shaft support means is detachably attached to the blur correction means. 15. The first shaft support means is detachably attached to the shake correction means, and the second shaft support means is detachably attached to the stationary member. 13 image blur prevention device. 16. At least one of the first shaft support means and the second shaft support means is detachably attached to the shake correction means and the stationary member by a spring clamp type connection. 13 image blur prevention device. 17. A predetermined play in the direction of the optical axis in at least one of an engagement relationship between the support shaft and the first shaft support means and an engagement relationship between the support shaft and the second shaft support means. 14. The image blur prevention device according to claim 13, wherein the image blur prevention device is provided. 18. The frequency of the natural vibration determined by the elasticity of the bent portion connecting the first straight line portion and the second straight line portion of the support shaft and the total mass of the shake correction unit is the shake correction unit. 14. The image blur prevention device according to claim 13, wherein the image blur prevention device is set to a higher frequency side than a vibration frequency band at the time of driving for image blur correction. 19. A shake correction unit driven in a direction orthogonal to an optical axis, a stationary base plate supporting the shake correction unit, and power supply or signal transmission from the base plate to the shake correction unit. A first flexible printed circuit board, and an image blur prevention device. 20. The image blur according to claim 19, wherein a hard printed circuit board is attached to the main plate, and one end of the first flexible printed circuit board is connected to the printed circuit board. Prevention device. 21. A second flexible printed circuit board is attached to the main plate instead of the printed circuit board,
One end of the first flexible printed board is connected to the second flexible printed board, and the first flexible printed board is made of a board material softer than the second flexible printed board. The image blur prevention device according to claim 19, wherein: 22. A second flexible printed circuit board is attached to the base plate instead of the printed circuit board,
20. The image blur prevention device according to claim 19, wherein the first flexible printed circuit board and the second flexible printed circuit board are welded to each other. 23. The image according to claim 19, wherein the first flexible printed circuit board has a flat surface portion that is orthogonal to the moving direction of the blurring correction means, and the bent portion is provided in the flat surface portion. Anti-shake device. 24. The image blur prevention device according to claim 23, wherein the bent portion is formed in advance when the second flexible printed circuit board is manufactured. 25. An image blur prevention having a blur correction unit driven in a direction orthogonal to an optical axis, an immovable base plate supporting the blur correction unit, and a printed circuit board attached to the base plate. In the apparatus, detection means for detecting the operation of the shake correction means is attached to the printed circuit board, and a positioning portion for positioning the detection means is formed on the base plate. An image blur preventing device characterized by being positioned on the main plate by positioning the detecting means on a portion. 26. The image blur prevention device according to claim 25, wherein the positioning portion is a hole fitted into an outer frame of the detecting means. 27. The image blur prevention device according to claim 25, wherein the detecting means is provided with a hole, and the base plate is provided with a pin fitted into the hole as the positioning portion. 28. A detecting means for detecting the operation of the shake correcting means is attached to the printed circuit board, a positioning hole is formed in the detecting means, and a pin provided on the base plate or the printed circuit board is provided. 26. The image blur prevention device according to claim 25, which is fitted in the positioning hole. 29. A blur correction unit driven in a direction orthogonal to an optical axis, an immovable base plate supporting the blur correction unit, and a magnetic circuit unit for driving the blur correction unit attached to the base plate. And a magnetic circuit means having a yoke including a plurality of polar plates that are parallel to a plane orthogonal to the optical axis and are spaced apart from each other in the direction of the optical axis, The image blur prevention device, wherein the yoke is attached to the base plate in a state in which a compressive force is applied in a direction in which the distance between the electrode plates becomes smaller. 30. A blur correction unit driven in a direction orthogonal to the optical axis, and a cylindrical coil fixed on an outer peripheral surface of the blur correction unit in a radial direction with respect to the optical axis.
In the image blur prevention device having an image blur prevention device, an elastic gripping member for gripping the coil from the inside is projectingly provided on the outer peripheral surface of the shake correcting means at a position where it does not enter the magnetic field in the coil, and An image blur preventing device, characterized in that a bent engaging portion which engages with a tip of the coil is formed. 31. A filling groove for an adhesive for adhering the coil to the shake correcting means is formed on the outer peripheral surface of the shake correcting means in contact with the base end portion of the coil along the circumferential direction of the coil. 31. The image blur prevention device according to claim 30, wherein the image blur prevention device is provided. 32. An image blur prevention device having a blur correction means driven in a direction orthogonal to an optical axis, comprising: a regulation means for regulating movement of the blur correction means in the optical axis direction. An image blur prevention device, which is also used as a light-shielding mask for blur correction means. 33. An image blur prevention device having a blur correction unit driven in a direction orthogonal to an optical axis, comprising a regulation unit for regulating movement of the blur correction unit in the optical axis direction, the regulation unit comprising: An image blur preventing device comprising position adjusting means for adjusting a fixed position of the blur correcting means in the optical axis direction. 34. The image blur prevention device according to claim 33, wherein the position adjusting means includes a spring and a screw structure. 35. An image blur prevention device having a blur correction means for correcting image blur and an immovable bottom plate supporting the blur correction means, wherein locking means for prohibiting movement of the blur correction means is provided. An image blur prevention, characterized in that the locking means has a locking arm which is fixed to the base plate and is biased by a spring in a direction of approaching and retracting with respect to the shake correcting means. apparatus. 36. The locking arm is made of a synthetic resin material,
36. The image blur prevention device according to claim 35, wherein a part of the locking arm has a spring property. 37. The locking arm is made of a synthetic resin material,
36. The image blur prevention device according to claim 35, wherein the image blur prevention device is formed integrally with a leaf spring attached to the base plate. 38. An image blur prevention device having a blur correction means for compensating for an image blur, and an immovable bottom plate supporting the blur correction means, wherein a mirror of an optical device in which the image blur prevention device is to be mounted. An image blur prevention device, characterized in that the base plate is provided with a connecting means for connecting the base plate to a cylinder so that the inclination of the base plate can be adjusted with respect to the optical axis direction.