JP3968641B2 - Anti-vibration adapter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an image stabilization adapter, and more particularly to an image stabilization adapter that is disposed between a lens device and a camera and includes a correction lens that corrects image blur caused by vibration applied to the camera.
[0002]
[Prior art]
Japanese Patent Application Laid-Open No. 11-284900 discloses an antivibration adapter disposed between a camera and a lens device. This vibration proof adapter is provided with a correction lens for correcting image blur, a vibration detection sensor for detecting vibrations in the vertical and horizontal directions, a correction lens driving unit having a linear motor, and the like, and vibration information detected by the vibration detection sensor. Based on the above, the correction lens is moved to a position for correcting the image blur by the correction lens driving unit.
[0003]
Further, the applicant of the present application is provided with a lock mechanism having a lock member in the vibration-proof adapter, and operates the lock member with this lock mechanism to restrict (lock) and release (unlock) the operation of the correction lens. (Japanese Patent Application No. 2000-311662). By locking the operation of the correction lens with the lock member in this way, it is possible to prevent the correction lens from being damaged by vibration during transportation of the vibration-proof adapter.
[0004]
[Problems to be solved by the invention]
However, the conventional anti-vibration adapter has a problem that the correction lens must be locked / unlocked by a lock mechanism separately from the attaching / detaching operation of the lens device to / from the anti-vibration adapter.
[0005]
The present invention has been made in view of such circumstances, and a vibration isolating adapter capable of performing a locking / unlocking operation of a correction lens in conjunction with an attaching / detaching operation of a lens device with respect to the vibration isolating adapter. The purpose is to provide.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention is arranged between a lens apparatus and a camera and corrects image blur caused by vibration applied to the camera, and engages with a lens frame of the correction lens. And a lock member for restricting the operation of the correction lens, wherein the anti-vibration adapter is rotatably provided with a mount tightening ring connected to the mount portion of the lens device. A lock mechanism is provided that moves the lock member to an engagement position or a non-engagement position with the correction lens frame in conjunction with a rotation operation of the tightening ring.
[0007]
According to the first aspect of the present invention, when the mount portion of the lens apparatus is aligned with the mount tightening ring of the vibration-proof adapter and the mount tightening ring is turned in the tightening direction, the lock mechanism operates in conjunction with this operation. Then, the lock member is moved from the engagement position with the correction lens frame to the non-engagement position. As a result, the correction lens of the image stabilization adapter is unlocked and becomes ready for use. On the other hand, when the mount tightening ring is rotated in the loose direction, the lock mechanism operates in conjunction with this operation, and the lock member is moved from the non-engagement position with the correction lens frame to the engagement position. As a result, the correction lens of the image stabilization adapter is locked. Therefore, the image stabilization adapter of the present invention can perform the locking / unlocking operation of the correction lens in conjunction with the attaching / detaching operation of the lens device with respect to the image stabilizing adapter.
[0008]
According to the second aspect of the present invention, when the mount tightening ring is turned in the tightening direction, the lever of the lock mechanism is driven and the lock member moves from the engagement position to the non-engagement position. Further, when the mount tightening ring is rotated in the loose direction, the lever of the lock mechanism is driven, and the lock member moves from the non-engagement position to the engagement position.
[0009]
According to the third aspect of the present invention, the lever can be manually operated because it is provided at a position where the lever can be manually operated protruding outside the vibration-proof adapter. Even when the lens apparatus is connected to the image stabilization adapter, if the correction lens is not desired to be operated, the lever is manually operated in the locking direction.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the vibration isolating adapter according to the present invention will be described in detail with reference to the accompanying drawings.
[0011]
FIG. 1 shows a side view in which a camera 12 (shown by a two-dot chain line) and a lens device 14 constituting a television camera are supported by a lens support device 10. The camera 12 shown in the figure is an ENG camera that can be placed on the shoulder, and the lens device 14 is a lens device that is a heavy object lens with a high zoom ratio of 36 times and a weight of about 4.5 kg, for example. Yes. The camera 12 and the lens device 14 are moved back and forth, left and right, and up and down on the lens support device 10 to be optically aligned, and are attached to a tripod head (not shown) via the lens support device 10. Used.
[0012]
The lens support device 10 includes a lens supporter 16 and a vibration isolation adapter 18 according to the embodiment.
[0013]
The lens supporter 16 has a connection portion with the tripod formed on the lower surface thereof, and a flat camera support portion 20 formed on the upper surface thereof. The camera 12 is detachably fixed to the camera support portion 20 via a tripod adapter 22 indicated by a two-dot chain line in FIG. The tripod adapter 22 is provided with a slider 23 that can move in the direction of arrow AB (front-rear direction). Further, a screw 24 is attached to the bent portion 17 at the upper left end of the lens supporter 16 in FIG.
[0014]
When the vibration isolation adapter 18 is used as shown in FIG. 1, the screw 24 is fastened to a nut portion 26 formed on the vibration isolation adapter 18, and the vibration isolation adapter 18 connected to the lens device 14 is connected to the lens supporter 16. It is used as a support member that is supported by Further, when the lens device 14 is directly supported by the lens supporter 16 without using the antivibration adapter 18 as shown in FIG. 2, the screw 24 is attached to a nut portion 28 provided in advance on the outer peripheral portion of the lens device 14. The lens device 14 is fastened and used as a support member that supports the lens supporter 16.
[0015]
As shown in FIGS. 3 and 4, the anti-vibration adapter 18 includes an adapter main body 30 and an adapter support member 32. The adapter body 30 is formed in a flat box shape, and a correction lens 34 for correcting image blur caused by vibration applied to the camera 12 is attached therein as shown in FIG.
[0016]
Further, a mount fastening ring 36 is rotatably provided on the front side of the correction lens 34 of the adapter main body 30. Three claws (not shown) of the mount portion 15 (see FIG. 1) of the lens device 14 are inserted into the three grooves 36A, 36A... Formed in the mount tightening ring 36, and the mount tightening ring 36 is attached. The lens device 14 is attached to the adapter main body 30 by rotating the mount portion 15 to the mount tightening ring 36 by rotating the mount portion 15 in the clockwise direction (tightening direction) in FIG. . FIG. 3 shows a state in the middle of rotating the mount fastening ring 36 in the fastening direction.
[0017]
A mounting portion 38 is provided on the rear side of the correction lens 34 of the adapter main body 30 as shown in FIG. 4, and this mounting portion 38 is inserted into the mount tightening ring 13 of the camera 12 indicated by a two-dot chain line in FIG. The camera 12 is attached to the adapter body 30 by rotating the tightening ring 13 to fasten the mount portion 38 to the mount tightening ring 13. When the lens device 14 is directly connected to the camera 12 without using the anti-vibration adapter 18, the mount portion 15 of the lens device 14 is inserted into the mount tightening ring 13 of the camera 12 as shown in FIG. What is necessary is just to fasten the mount part 15 with the attached ring 13.
[0018]
As shown in FIG. 3, the adapter support member 32 of the vibration proof adapter 18 is formed in a flat plate shape, and is connected to the lower portion of the adapter main body 30 so as to protrude forward. As a result, the anti-vibration adapter 18 is formed in an inverted L shape as shown in FIG.
[0019]
As shown in FIG. 3, a nut portion 26 that is fastened to the screw 24 (see FIG. 1) on the lens supporter 16 side is formed on the upper surface of the adapter support member 32. A screw 40 that is fastened to the nut portion 28 is provided.
[0020]
A control box 42 is attached to the lower surface of the adapter support member 32. The control box 42 incorporates a control circuit for controlling the operation of the correction lens 34 of the image stabilization adapter 18. The control box 42 is also used as an interface for transferring information between the image stabilization adapter 18 and the camera 12. That is, the control box 42 is provided with a connector 44 connected to a connector (not shown) on the lens device 14 side, and a connector 46 connected to a connector (not shown) on the camera 12 side. Some pins of the connectors 44 and 46 are directly connected by a cable, and information from the lens device 14 is transmitted through the control box 42 to the camera 12 side. The remaining pins of the connectors 44 and 46 are connected to an electronic circuit board in the control box 42 via a cable. The electronic circuit board is a control board on which the control circuit of the image stabilization adapter 18 is mounted, and the control circuit unit captures necessary information (for example, focal length information of the lens) from the lens device 14 or the camera 12. This is used for controlling the operation of the correction lens 34.
[0021]
FIG. 5 is a detailed structural diagram of the screw 24 that couples the vibration proof adapter 18 to the lens supporter 16. As shown in the figure, male screws 48 and 50 are engraved at both ends (upper and lower ends) of the screw 24.
[0022]
The male screw 48 is a screw that is fastened to the nut portion 26 on the vibration isolation adapter 18 side, and protrudes from an end portion of the small diameter portion 25 </ b> A formed in the main body portion 25 of the screw 24. The male screw 48 is screwed into the nut portion 26 and the upper surface 25B of the small diameter portion 25A is brought into contact with the lower reference surface 26B of the nut portion 26, whereby the male screw 48 is completely fastened to the nut portion 26.
[0023]
The male screw 50 is disposed through a through hole 17A formed in the bent portion 17 of the lens supporter 16 and is bent through a pair of nuts 52 and 54 that are screwed together with the bent portion 17 interposed therebetween. 17 is fixed. In this fixed state, by loosening the nut 52 and turning the nut 54, the screw 24 moves up and down with respect to the lens supporter 16 by the action of the screw. As a result, the vibration isolating adapter 18 moves up and down relative to the lens supporter 16, so that the height position of the vibration isolating adapter 18 relative to the lens supporter 16, that is, the height position of the adapter main body 30 relative to the camera 12 is adjusted.
[0024]
On the other hand, the screw 40 to be fastened to the nut portion 28 of the lens device 14 is optically applied to the nut portion 26 of the adapter support member 32 by a length B corresponding to the thickness of the adapter main body 30 in the optical axis direction as shown in FIG. It is provided at a position shifted forward in the axial direction. Further, as shown in FIG. 3, the screw 40 is disposed through a long hole 33 formed in the adapter support member 32 so as to penetrate in the optical axis direction, and play is provided by the length of the long hole 33 in the longitudinal direction. Further, a seat 56 is formed around the long hole 33. Further, a knob 58 is attached to the screw 40 at a position penetrating the long hole 33.
[0025]
By turning the knob 58 and screwing the screw 40 into the nut portion 28, the lower surface 28 </ b> A of the nut portion 28 is brought into contact with the reference surface 56 </ b> A of the receiving seat 56, so that the lens device 14 supports the adapter of the vibration isolation adapter 18. Fully supported by member 32.
[0026]
As shown in FIG. 6, the height H of the reference surface 56 </ b> A of the receiving seat 56 with respect to the surface 32 </ b> A of the adapter support member 32 is equal to the height H of the reference surface 26 </ b> B of the nut portion 26.
[0027]
Next, the lock mechanism 60 of the anti-vibration adapter 18 will be described with reference to FIGS. 7 is a side view showing the lock mechanism 60 in a locked state, FIG. 8 is a top view of FIG. 7, and FIGS. 9 and 10 are explanatory views showing a lock pin (lock member) 62 of the lock mechanism 60. FIG. Further, FIG. 11 is a perspective view of the lock mechanism 60 in the unlocked state.
[0028]
7 to 11, the lock mechanism 60 includes a lever 64, a gear 66, a gear 68, a toggle spring 70, an eccentric pin 72, a lock pin 62, and the like.
[0029]
As shown in FIG. 7, the lever 64 rotates between a mount fastening ring 36 and a lens frame 74 holding the correction lens 34 (see FIG. 3) on a shaft 65 disposed in a direction perpendicular to the plane of FIG. It is supported freely. The shaft 65 is supported by the adapter main body 30.
[0030]
The lever 64 has two operation pieces 64A and 64B branched in a right angle direction. As shown in FIG. 7, the operation piece 64A protrudes to the position where the knob 37 of the mount tightening ring 36 rotates and is pushed by the knob 37 as shown in FIG. As a result, the lever 64 is rotated counterclockwise about the shaft 65 of FIG.
[0031]
The gear 66 is provided integrally with the lever 64 and is pivotally supported by the shaft 65. A gear 68 is engaged with the gear 66. The gear 68 is integrally attached to a shaft 76 that is rotatably supported by the adapter main body 30, and a position where the eccentric pin 72 is eccentric with respect to the shaft 76 via a connecting plate 77 at the tip of the shaft 76. It is connected to. Further, a top member 78 is fixed to the base end portion of the shaft 76, and flat surfaces 78 </ b> A and 78 </ b> B on which the toggle spring 70 is pressed and abutted are formed on the outer peripheral surface of the top member 78. The surface 78A and the surface 78B are formed with an angle difference of 90 degrees, and in the state of FIG. 7 where the toggle spring 70 is pressed against the surface 78A, the toggle spring 70 and the surface 78A constitute a toggle mechanism. The lever 64 is self-locked to the state shown in FIG. The toggle spring 70 is fixed to the adapter main body 30 via the support plate 71.
[0032]
In the state of FIG. 7, the eccentric pin 72 of FIGS. 9 and 10 connected to the shaft 76 is engaged with a long hole 63 formed in the side surface of the lock pin 62 as shown in the figure. As shown in FIG. 9, the lock pin 62 is slidably attached to a shaft 80 provided in parallel with the optical axis 34 </ b> A of the correction lens 34. As shown in FIG. 8, the shaft 80 is supported by a support member 82 disposed on the side of the lens frame 74, and a left end portion of the shaft 80 is supported, and a right end portion of the shaft 80 is formed in the protruding portion 75 of the lens frame 74. It is arranged through.
[0033]
Further, a coil spring 86 is disposed between the support member 82 and the lock pin 62, and the lock pin 62 is urged rightward in FIG. 10 by the urging force of the coil spring 86. A tapered surface 62A is formed at the tip of the lock pin 62, and a tapered surface 80A that is detachably engaged with the tapered surface 62A is formed at the peripheral edge of the opening 84 on the lens frame 74 side. 7 to 10, the lock pin 62 is urged rightward in FIG. 10 by the urging force of the coil spring 86, and the tapered surface 62A and the tapered surface 80A are engaged. That is, the lock pin 62 is located at the engagement position, and the operation of the correction lens 34 is locked by the lock pin 62. The pressing force of the lock pin 62 against the lens frame 74 at this time is set to a force that does not apply an excessive force to the lens frame 74.
[0034]
On the other hand, the operation piece 64A is pushed by the knob 37 as shown in FIG. 3 by the turning operation of the knob 37 shown in FIG. 7, and the lever 64 is turned counterclockwise about the shaft 65 of FIG. Then, the top member 78 rotates in the clockwise direction in FIG. 7 against the urging force of the toggle spring 70 via the gears 66 and 68. When the top member 78 rotates 45 degrees or more in the same direction, the edge portion 78C of the top member 78 gets over the toggle spring 70, so that the urging force of the toggle spring 70 acts on the surface 78B side. Accordingly, the top member 78 is instantaneously rotated in the same direction by the urging force of the toggle spring 70, and is self-locked to the state shown in FIG. 11 in which the toggle spring 70 is in contact with the surface 78B. By this operation, the shaft 76 rotates 90 degrees clockwise in FIG. 7, so that the eccentric pin 72 shown in FIG. 10 rotates 90 degrees clockwise. As a result, the lock pin 62 is pushed by the eccentric pin 72 and moves leftward in FIG. 10, and the taper surface 62A of the lock pin 62 is engaged with the taper surface 80A on the lens frame 74 side (in the solid line in FIG. 10). It retracts from the position shown) to the non-engagement position (position shown by the upper two-dot chain line). Therefore, the lock of the lens frame 74 by the lock pin 62 is released.
[0035]
Further, since the lever 64 is provided at a manually operable position protruding outside the adapter body 30 as shown in FIG. 3, it can also be manually operated.
[0036]
As shown in FIG. 7, a light shielding plate 88 is attached to the gear 66 so as to protrude outward from the gear 66. The light shielding plate 88 is detected by a photo interrupter 90 provided in the adapter main body 30 when the gear 66 rotates from the state of FIG. 7 to the state of FIG. The detection signal from the photo interrupter 90 is output to the control circuit unit of the image stabilization adapter 18, and when the detection signal is output, the control circuit unit supplies power to the motor that drives the correction lens 34.
[0037]
Next, the operation of the anti-vibration adapter 18 configured as described above will be described.
[0038]
When attaching the lens device 14 to the image stabilization adapter 18, first, the mount portion 15 of the lens device 14 is inserted into the mount tightening ring 36 of the image stabilization adapter 18, and the mount tightening ring 36 is tightened by the knob 37 ( A predetermined angle is turned clockwise in FIG. 3 and in the direction of the arrow in FIG. As a result, the lens device 14 is attached to the image stabilization adapter 18.
[0039]
When the lens device 14 is attached, the operation piece 64A is pushed by the knob 37 rotated in the tightening direction, so that the lever 64 rotates about the shaft 65 in the counterclockwise direction in FIG. I will do it. Then, when the top member 78 rotates in the clockwise direction in FIG. 7 against the urging force of the toggle spring 70 via the gears 66 and 68, and the edge portion 78C of the top member 78 gets over the toggle spring 70. The top member 78 is instantaneously rotated in the same direction by the biasing force of the toggle spring 70, and the toggle spring 70 is brought into contact with the surface 78B.
[0040]
By this operation, the shaft 76 rotates 90 degrees clockwise in FIG. 7, so that the eccentric pin 72 shown in FIG. 10 rotates 90 degrees clockwise, and the lock pin 62 is pushed by the eccentric pin 72. To move leftward in FIG. Thereby, the taper surface 62A of the lock pin 62 is moved from the engagement position (position shown by a solid line in FIG. 10) to the non-engagement position (position shown by a two-dot chain line in FIG. 10) with the taper surface 80A on the lens frame 74 side. Since it retracts, the correction lens 34 is unlocked. As described above, the anti-vibration adapter 18 according to the embodiment can perform the unlocking operation of the correction lens in conjunction with the attaching operation of the lens device 14 to the anti-vibration adapter 18.
[0041]
Further, since the lever 64 is provided at a position where the lever 64 can be manually operated and protrudes to the outside of the image stabilizer adapter 18, the correction lens 34 is operated even after the lens device 14 is attached to the image stabilizer adapter 18. If not, the lever 64 can be manually operated from the unlocked position of FIG. 11 to the locked position of FIG.
[0042]
Next, when the lens device 14 is removed from the image stabilizing adapter 18, the mount tightening ring 36 is rotated by a predetermined angle in the loose direction (arrow direction in FIG. 11) by the knob 37. As a result, the lens device 14 is detached from the image stabilizing adapter 18.
[0043]
When the lens device 14 is removed, the operation piece 64B is pushed by the knob 37 that has been rotated in the gentle direction, so that the lever 64 rotates about the shaft 65 in the clockwise direction in FIG. Go. Then, the top member 78 rotates counterclockwise in FIG. 11 counterclockwise via the gears 66 and 68, and the edge portion 78C of the top member 78 gets over the toggle spring 70. Then, the top member 78 is instantaneously rotated in the same direction by the biasing force of the toggle spring 70, and the toggle spring 70 is brought into contact with the surface 78A.
[0044]
By this operation, the shaft 76 is rotated 90 degrees counterclockwise on FIG. 11, so that the eccentric pin 72 returns to the position of FIG. Move in the direction. Thereby, the taper surface 62A of the lock pin 62 moves from the non-engagement position (position indicated by a two-dot chain line in FIG. 10) to the engagement position (position indicated by a solid line in FIG. 10) with the taper surface 80A. The correction lens 34 is locked. As described above, the image stabilization adapter 18 according to the embodiment can perform the lock operation of the correction lens in conjunction with the removal work of the lens device 14 with respect to the image stabilization adapter 18.
[0045]
The present invention pays attention to the operation knob 37 pre-attached to the mount tightening ring 36 and adopts a structure in which the operation knob 37 serves as a trigger. Since 64 is operated by the operation knob 37, a simple interlocking structure can be provided.
[0046]
The lock mechanism 60 is not limited to the mechanism described above, and the correction lens can be locked and unlocked in conjunction with the rotation operation of the mount tightening ring 36 in the tightening / loosening direction. Any mechanism can be applied.
[0047]
Next, an example of the image stabilization mechanism of the image stabilization adapter 18 will be described. As shown in FIG. 12, the correction lens 34 is moved by the linear motors 100 and 102 in a direction to correct image blur in a plane orthogonal to the photographing optical axis P. Is done. The correction lens 34 is movably supported on the adapter main body 30 via a parallel link mechanism including four arms 104, 104, 106, 106.
[0048]
The linear motor 100 moves the correction lens 34 in the left-right direction in FIG. 12, and includes a motor body 100A and a rod 100B. The motor main body 100 </ b> A is fixed to the adapter main body 30, and the tip of the rod 100 </ b> B is engaged with the elongated hole 108 of the lens frame 74 via the roller 110. The elongated hole 108 is formed on the left side of the lens frame 74 in the vertical direction in the drawing, and the elongated hole 108 and the roller 110 are relatively movably engaged in the vertical direction in FIG.
[0049]
When the rod 100B expands and contracts by the driving force of the motor body 100A, the correction lens 34 is pushed by the rod 100B or pulled by the rod 100B and moves in the left-right direction in FIG. When a vertical force is applied to the lens frame 74, the roller 110 is guided by the elongated hole 108, and the correction lens 34 moves in the vertical direction in FIG.
[0050]
A connecting frame 112 is fixed to the rod 100 </ b> B of the linear motor 100. The connecting frame 112 is arranged in the vertical direction, the rod 100B is fixed to the center, and the upper and lower ends are slidably supported by the linear guides 114 and 114, respectively. The linear guides 114 and 114 are provided in parallel with the rod 100B. When the rod 100B is expanded and contracted, the connecting frame 112 translates in the left-right direction while maintaining its posture.
[0051]
The distal end of the detection contact needle 116B of the position sensor 116 is pressed against the connection frame 112. In the position sensor 116, the sensor main body 116A is fixed to the adapter main body 30 at a position where the detection contact needle 116B is parallel to the rod 100B, and the amount of movement of the connecting frame 112 that moves in parallel by the expansion and contraction of the rod 100B is determined. Detect.
[0052]
Reference numeral 118 </ b> A is a bobbin constituting the speed generator 118, and reference numeral 118 </ b> B is a core constituting the speed generator 118. The core 118B is fixed to the connecting frame 112.
[0053]
On the other hand, the linear motor 102 moves the correction lens 34 in the vertical direction, and includes a motor body 102A and a rod 102B. The motor main body 102 </ b> A is fixed to the adapter main body 30, and the tip of the rod 102 </ b> B is engaged with the elongated hole 120 of the lens frame 74 via a roller 122. The elongated hole 120 is formed in the left-right direction below the lens frame 74, and the elongated hole 120 and the roller 122 are engaged with each other so as to be relatively movable in the left-right direction.
[0054]
When the rod 102B expands and contracts by the driving force of the motor body 102A, the correction lens 34 is pushed by the rod 102B or pulled by the rod 102B and moves in the vertical direction. Further, when a lateral force is applied to the lens frame 74, the roller 122 is guided by the elongated hole 120 and the correction lens 34 moves in the lateral direction.
[0055]
A connecting frame 124 is fixed to the rod 102 </ b> B of the linear motor 102. The connecting frame 124 is disposed in the left-right direction, the rod 102B is fixed to the center portion, and the left and right end portions are slidably supported by the linear guides 126, 126, respectively. The linear guides 126 and 126 are provided in parallel with the rod 102B, and when the rod 102B is expanded and contracted, the connecting frame 124 translates vertically while maintaining its posture.
[0056]
The distal end of the detection contact needle 128 </ b> B of the position sensor 128 is pressed against the connection frame 124. The position sensor 128 detects the amount of movement of the connecting frame 124 that is fixed to the adapter main body 30 at the position where the detection contact needle 128B is parallel to the rod 102B and moves in parallel by the expansion and contraction of the rod 102B.
[0057]
Similarly to the position sensor 116, the position sensor 128 does not directly contact the detection contact needle 128B with the peripheral surface of the lens frame 74, but can detect the amount of movement of the correction lens 34 indirectly. 124.
[0058]
Reference numeral 130 </ b> A is a bobbin constituting the speed generator 130, and reference numeral 130 </ b> B is a core constituting the speed generator 130. The core 130B is fixed to the connecting frame 124.
[0059]
The internal structure of the image stabilizing adapter 18 is not limited to the form shown in FIG. 12, and various forms are possible as the specific structure for appropriately moving the correction lens 34 by a driving means such as an actuator.
[0060]
FIG. 13 is a block diagram showing a drive control system for the correction lens 34. Angular velocity sensors 132 and 134 shown in the figure are arranged inside the adapter main body 30. One angular velocity sensor 132 detects the vibration of the left-right direction component among the vibrations transmitted to the camera 12, and this detected information constitutes a control circuit unit built in the control box 42 of FIG. The data is output to the CPU 136.
[0061]
The CPU 136 calculates the correction movement amount in the left-right direction to be given to the correction lens 34 based on the information received from the angular velocity sensor 132. A signal indicating the correction movement amount in the left-right direction is amplified by the amplifier 138 and then output to the linear motor 100 (see FIG. 12). The linear motor 100 operates to extend or contract the rod 100B by an amount corresponding to a command signal from the CPU 136, and moves the correction lens 34 to the image blur correction position. Thereby, the vibration component in the left-right direction is canceled by the movement of the correction lens 34, and the image blur in the left-right direction is suppressed.
[0062]
When the correction lens 34 moves in the left-right direction, the position sensor 116 detects the movement position of the connection frame 112. The position signal detected by the position sensor 116 is compared with a signal indicating the correction movement amount output from the CPU 136, and the linear motor 100 performs feedback control so that the correction lens 34 is positioned at a position corresponding to the correction movement amount. Has been.
[0063]
Similarly, the other angular velocity sensor 134 detects the vibration of the vertical component among the vibrations transmitted to the camera 12, and the detected information is output to the CPU 136. The CPU 136 calculates the vertical correction movement amount to be given to the correction lens 34 based on the information received from the angular velocity sensor 134, and outputs a signal indicating the vertical correction movement amount via the amplifier 138 to the linear motor 102 (see FIG. 12). The linear motor 102 operates to extend or contract the rod 102B by an amount corresponding to a command signal from the CPU 136, and moves the correction lens 34 to the image blur correction position. Thereby, the vibration component in the vertical direction is canceled by the movement of the correction lens 34, and the image blur in the vertical direction is suppressed.
[0064]
When the correction lens 34 moves in the vertical direction, the position sensor 128 detects the movement position of the connecting frame 124. The detected position signal is compared with a signal indicating the correction movement amount output from the CPU 136, and the linear motor 102 is feedback controlled so as to position the correction lens 34 at a position corresponding to the correction movement amount. .
[0065]
【The invention's effect】
As described above, according to the vibration isolating adapter according to the present invention, the anti-vibration adapter is provided with the lock mechanism that locks / unlocks the correction lens in conjunction with the rotation operation of the mount tightening ring of the vibration isolating adapter. The correction lens can be locked / unlocked in conjunction with the lens device mounting / removing operation.
[0066]
In addition, according to the present invention, since the lever is provided at a manually operable position that protrudes to the outside of the vibration isolation adapter, the lever can be manually operated.
[Brief description of the drawings]
FIG. 1 is a side view showing a state in which a television camera is supported by a lens support device having an anti-vibration adapter.
FIG. 2 is a side view showing a state in which a lens device is directly supported by a lens supporter.
FIG. 3 is a perspective view showing the vibration isolating adapter according to the embodiment.
4 is a side view of the anti-vibration adapter shown in FIG. 3;
FIG. 5 is an enlarged cross-sectional view of a main part showing a connection structure between a lens supporter and a vibration isolating adapter
FIG. 6 is an enlarged cross-sectional view of a main part showing a connection structure between the image stabilization adapter and the lens device.
FIG. 7 is a side view showing a correction lens lock mechanism of a vibration-proof adapter.
8 is a top view of the lock mechanism shown in FIG.
FIG. 9 is an explanatory view showing a lock pin drive structure of the lock mechanism.
FIG. 10 is a cross-sectional view showing a lock pin drive structure of a lock mechanism
FIG. 11 is a perspective view showing a structure of a lock mechanism.
FIG. 12 is a structural diagram illustrating an example of an anti-vibration mechanism for a correction lens.
FIG. 13 is a block diagram showing a control circuit of an image stabilization mechanism for a correction lens.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Lens support apparatus, 12 ... Camera, 14 ... Lens apparatus, 16 ... Lens supporter, 18 ... Anti-vibration adapter, 30 ... Adapter main body, 32 ... Adapter support member, 34 ... Correction lens, 36 ... Mount clamping ring, 60 ... Lock mechanism, 62 ... Lock pin, 64 ... Lever, 66, 68 ... Gear, 70 ... Toggle spring, 72 ... Eccentric pin, 74 ... Lens frame

Claims (3)

A correction lens that is disposed between the lens device and the camera and corrects image blur caused by vibration applied to the camera; and a lock member that engages with the lens frame of the correction lens and restricts the operation of the correction lens. In the anti-vibration adapter provided,
The anti-vibration adapter is rotatably provided with a mount fastening ring connected to the mount portion of the lens device, and the lock member is interlocked with the turning operation of the mount fastening ring to fix the lock member to the correction lens frame. A vibration-proof adapter is provided, which is provided with a lock mechanism that moves to an engagement position or a disengagement position. The lock mechanism includes a lever that is coupled to the lock member and moves the lock member between the engagement position and the non-engagement position, and the lever is configured to rotate the mount tightening ring. 2. The anti-vibration adapter according to claim 1, wherein the anti-vibration adapter is driven in conjunction. The anti-vibration adapter according to claim 2, wherein the lever is provided at a position where the lever can be manually operated and protrudes outside the anti-vibration adapter.

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