JP2003255426A - Vibrationproof adapter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vibrationproof adapter by which positioning to a lens apparatus and a camera can be easily performed by providing a juncture to the lens apparatus and a juncture to the camera at the vibrationproof adapter and integrally constituting a lens supporter for supporting the lens apparatus to a universal head in advance. <P>SOLUTION: Since the lens supporter 18 is constituted integrally with the vibrationproof adapter 10 in advance, the vibrationproof adapter 10 can be attached to a universal head apparatus 12 only by attaching the lens supporter 18 to a supporting pedestal 16. Further since a hook 44 being a juncture to an EFP lens 19 and a C mount 62 being a juncture to a CCD camera 20 are provided at the vibrationproof adapter 10, positioning to the EFP lens 19 and to the CCD camera 20 are facilitated. <P>COPYRIGHT: (C)2003,JPO

Description

Description: BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to an anti-vibration adapter, and more particularly to a surveillance camera used by being attached to a camera platform. The present invention relates to an anti-vibration adapter including a correction lens that corrects image blur caused by vibration. 2. Description of the Related Art JP-A-11-284900 discloses that
An anti-vibration device (anti-vibration adapter) disposed between an ENG camera and an EFP lens device is disclosed. This anti-vibration adapter is provided with a correction lens for correcting image blur, a vibration detection sensor for detecting vertical and horizontal vibrations, a correction lens driving unit having a linear motor, and the like. The vibration information detected by the vibration detection sensor is provided. , The correction lens is moved to a position where image blur is corrected by the correction lens driving unit. [0003] The anti-vibration adapter is connected to a lens supporter by a screw, and an EFP lens device is mounted on the lens supporter and supported. Further, an ENG camera is connected to a mount portion of the anti-vibration adapter connected to the lens supporter. [0004] However, the anti-vibration adapter described in Japanese Patent Application Laid-Open No. H11-284900, etc., involves connecting the anti-vibration adapter to the lens supporter and attaching the lens supporter to the camera platform. Since work is required, it takes time to attach the camera to the camera platform, and the optical axis adjustment including the lens device and the camera must be performed via the lens supporter. there were. [0005] The present invention has been made in view of such circumstances, and can be easily mounted on a camera platform, and can easily perform optical axis adjustment including a lens device and a camera. An object of the present invention is to provide an anti-vibration adapter. [0006] In order to achieve the above object, the present invention is arranged between a lens device and a camera, and corrects image blur caused by vibration applied to the camera. In the image stabilization adapter including the correction lens, the image stabilization adapter is provided with a connection portion with the lens device and a connection portion with the camera,
It is characterized in that a lens supporter for supporting the lens device on a camera platform is integrated in advance. According to the present invention, since the lens supporter is integrated with the anti-vibration adapter in advance, the anti-vibration adapter can be attached to the camera platform simply by attaching the lens supporter to the camera platform. In addition, a connection portion with the lens device and a connection portion with the camera are provided on the anti-vibration adapter, and the lens device and the camera are directly connected to the anti-vibration adapter via these connection portions. It can be carried out. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a vibration-damping adapter according to the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 shows an anti-vibration adapter 10 according to an embodiment.
Is applied to the surveillance camera device 12. The surveillance camera device 12 has a camera platform device 14 that is remotely controlled in a monitoring room or the like. A vibration isolation adapter 10 is detachably mounted on a support 16 of the camera platform device 14 via a lens supporter 18. ing. A box-shaped EFP lens 19 is mounted on the front side of the anti-vibration adapter 10, and a small CCD camera 20 is mounted on the back side of the anti-vibration adapter.
Is attached. A motor (not shown) for driving a pan shaft 22 and a tilt shaft 24 (shown by a two-dot chain line in FIG. 1) of the pan head device 14 is built in a main body case 15 of the pan head device 14. This motor is remotely controlled to control the pan axis 22
Is rotated in the direction of arrow B, the EFP lens 19 and C
The CD camera 20 pans with the main body case 15.
When the motor is remotely controlled to rotate the tilt shaft 24 in the direction of arrow A, the support 16 connected to the tilt shaft 24 swings up and down, and the EFP lens 19
Then, the CCD camera 20 performs a tilt operation. FIGS. 2 and 3 are perspective views showing the appearance of the anti-vibration adapter 10, FIG. 4 is a side view of the anti-vibration adapter 10, and FIG. . As shown in these figures, the anti-vibration adapter 10
The main body case 30 is formed in a flat box shape, and is composed of a front plate 32, a rear plate 34, a frame plate 36, and the lens supporter 18. The front plate 32 of the main body case 30 shown in FIG.
Are fixed to the frame body 36 of the main body case 30 by four screws 38 screwed into four corners. A hole 42 into which the bayonet mount 40 on the EFP lens 19 side is inserted is formed at a substantially central portion of the front plate 32 as shown in FIG. EFP lens 1 for anti-vibration adapter 10
The mounting of 9 is performed by engaging the hook 46 of the EFP lens 19 with the hook 44 of the anti-vibration adapter 10 as shown in FIG. These hooks 44 and 46 are formed with tapered surfaces formed at an inclination angle of about 45 °, and by engaging these tapered surfaces, the anti-vibration adapter 1 is formed.
The mounting of the EFP lens 19 with respect to 0 is performed. Also,
A positioning pin 50 is attached to the hook 46 of the EFP lens 19.
The pin 50 is engaged with a groove 48 formed at the center of the hook 44 of the vibration-proof adapter 10. When the lens-type hook 46 is engaged with the adapter-side hook 44 in mounting the image stabilizing adapter 10 and the EFP lens 19, the optical axis of the EFP lens 19 and the image stabilizing adapter 10
And the optical axis of the other side coincides in the vertical direction.
When 0 is engaged, both optical axes coincide in the horizontal direction. Thereby, both optical axes coincide. Further, a screw 52 is attached to the upper right corner of the front plate 32 in FIG. 2, and the screw 52 is turned by a knob 53 to form an unillustrated upper part formed on the rear end of the EFP lens 19. Screwed into the female screw. As a result, the EFP lens 19 is fixed to the anti-vibration adapter 10. A rectangular through-hole 54 for inserting a cable (not shown) connected to the EFP lens 19 is formed in the lower left corner of the front plate 32 in FIG. Further, a concave portion 56 is formed at the lower center of the front plate 32, and the concave portion 56 has
A pin (not shown) having a spring property and projecting from the rear end face of the FP lens 19 is fitted. CCD camera 2 for anti-vibration adapter 10
The CCD camera 20 is mounted on the camera support 58 shown in FIG. 4 provided on the rear plate 34 of the main body case 30 and mounted on the C mount 62 of the lens barrel 60 protruding from the rear plate 34. 4 is connected to the mount section 21 of the CCD camera 20 shown in FIG.
This is performed by fixing the camera 20 to the camera support 58. This screw fixing is performed by turning the knob 65 of the screw 64. At the base of the camera support 58 as shown in FIG.
A pair of mounting flanges 59, 59 are formed, and these mounting flanges 59 are provided with elongated holes 59A for height adjustment in the vertical direction. The camera support base 58 is fixed to the rear plate 3 by screws 66, 66... Inserted into the elongated holes 59A.
Fixed to 4. The camera support 58 is provided with a screw 66.
By adjusting the vertical position of the elongated hole 59A with respect to the rear plate 34, the height of the elongated hole 59A is adjusted and attached to the rear plate 34. On the other hand, the lens barrel 60 shown in FIG. 5 is fixed to the rear plate 34 of the main body case 30 by screws 74, and the first fixed lens 68, the movable lens 70, and the optical system of the anti-vibration adapter 10. And the second fixed lens group 72 of the second fixed lens group 72. On the outer periphery of the lens barrel 60, as shown in FIG.
A mount ring 76 on which the mount 62 is formed is rotatably provided. A tightening ring 78 for fixing the mount ring 76 to the lens barrel 60 is screwed to the outer periphery of the lens barrel 60 via a screw portion (a female screw on the tightening ring 78 side, a male screw on the lens barrel 60 side) 80. Have been combined. When the CCD camera 20 is connected to the lens barrel 60 constructed as described above, first, the tightening ring 78 is loosened to make the mount ring 76 freely rotatable, and the mount ring 76 is turned. The C mount 62 is connected to the mount 21 of the CCD camera 20. Thereafter, the tightening ring 78 is tightened to press the annular edge 77 of the mount ring 76 against the annular step edge 61 of the lens barrel 60. Thus, the mount ring 76 is fixed to the lens barrel 60, and the CCD camera 20 is connected to the lens barrel 60. On the other hand, the mounting of the anti-vibration adapter 10 on the support 16 of the camera platform device 14 is performed by mounting the lens supporter 18 shown in FIG. This is done by screwing to 16. The lens supporter 18 has a support plate 92 in which screw holes 90 for fixing screws are formed in the longitudinal direction.
And a pair of substantially triangular reinforcing plates 94, 94 for reinforcing the connection between the support plate 92 and the frame plate 36. The mounting position of the anti-vibration adapter 10 with respect to the support 16 is determined by selecting a screw hole 90 for a screw (not shown) provided on the support 16 from a plurality of screw holes 90. In the conventional lens apparatus, since the anti-vibration adapter and the lens supporter are separate members, an operation of connecting the anti-vibration adapter to the lens supporter and an operation of attaching the lens supporter to the camera platform are required. The optical axis adjustment including the lens device and the camera must be performed via the lens supporter, and there is a problem that these adjustments are troublesome. In order to solve this problem, the anti-vibration adapter 10 of the embodiment has the lens supporter 18 integrally formed in advance as shown in FIG. The adapter 10 can be attached to the camera platform device 12. Also, anti-vibration adapter 1
0 is provided with a hook 44 which is a connection portion with the EFP lens 19 and a C mount 62 which is a connection portion with the CCD camera 20, and the EFP lens 19 and the CC are connected through these connection portions.
Since the D camera 20 was directly connected to the anti-vibration adapter 10, EF
Positioning with respect to the P lens 19 and the CCD camera 20 becomes easy. Next, the internal structure of the anti-vibration adapter 10 will be described. The first fixed lens 68 of FIG. 5 constituting the optical system of the anti-vibration adapter is fixed to a lens frame 82 provided in the hole 42. . The lens frame 82 is a member integrally formed with a portion forming the shape of the hole 42, and has a screw 86.
Is fixed to the front plate 32. The movable lens 70 is connected to an anti-vibration mechanism while being held by the lens frame 84 as shown in FIG. 7, and is moved in a plane perpendicular to the optical axis P by the anti-vibration mechanism, thereby substantially correcting image blur. . To describe the anti-vibration mechanism, the movable lens 70 is moved by linear motors 100 and 102 in a direction perpendicular to the photographing optical axis P in a direction for correcting image blur. The movable lens 70 has four arms 104, 104,
Rear plate 3 via a parallel link mechanism 106
4 movably supported inside. The linear motor 100 moves the movable lens 70 in the left-right direction in FIG. 7, and comprises a motor body 100A and a rod 100B. The motor body 100A is fixed to the rear plate 34, and the rod 100B
Is engaged with a long hole 108 of the lens frame 84 via a roller 110. The elongated hole 108 is formed vertically on the left side of the lens frame 84 in FIG.
The roller 8 and the roller 110 are relatively movably engaged in the vertical direction in FIG. When the rod 100B expands and contracts by the driving force of the motor body 100A, the movable lens 70
00B or pulled by the rod 100B.
Move left and right on top. When a vertical force is applied to the lens frame 84, the roller 110 is guided by the elongated hole 108, and the movable lens 70 moves in the vertical direction in FIG. A connecting frame 112 is fixed to the rod 100B of the linear motor 100. This connection frame 112
Are arranged vertically, and a rod 100
B are fixed, and the upper and lower ends are linear guides 11 respectively.
4 and 114 slidably supported. The linear guides 114, 114 are provided in parallel with the rod 100B. When the rod 100B expands and contracts, the connecting frame 112 moves in the left-right direction while maintaining its posture. The tip of the contact needle 116B for detection of the position sensor 116 is pressed against the connecting frame 112. The position sensor 116 detects that the contact needle 116 </ b> B
The sensor main body 116A is fixed to the rear plate 34 at a position parallel to B, and detects the amount of movement of the connection frame 112 that moves in parallel by the expansion and contraction operation of the rod 100B. Reference numeral 118A denotes the speed generator 1
Reference numeral 118B denotes a bobbin constituting the speed generator 118. The core 118B is fixed to the connection frame 112. On the other hand, the linear motor 102 moves the movable lens 70 in the vertical direction.
A and a rod 102B. Motor body 10
2A is fixed to the rear plate 34, and the tip of the rod 102B is engaged with the elongated hole 120 of the lens frame 84 via the roller 122. The long hole 120 is formed in the lower part of the lens frame 84 in the left-right direction, and the long hole 120 and the roller 122 are relatively movably engaged in the left-right direction. When the rod 102B expands and contracts by the driving force of the motor body 102A, the movable lens 70
It is pushed by 02B or pulled by the rod 102B to move in the vertical direction. When a left-right direction force is applied to the lens frame 84, the roller 122 is guided by the long hole 120, and the movable lens 70 moves in the left-right direction. A connecting frame 124 is fixed to the rod 102B of the linear motor 102. The connection frame 124 is disposed in the left-right direction, the rod 102B is fixed at the center, and the left and right ends are linear guides 126, 126, respectively.
Slidably supported by Linear guide 126, 1
26 is provided in parallel with the rod 102B, and when the rod 102B is expanded and contracted, the connecting frame 124 moves up and down in parallel while maintaining its posture. The distal end of the contact needle 128B for detection of the position sensor 128 is pressed against the connecting frame 124. The position sensor 128 is configured such that the detection contact needle 128B is
The sensor body 128A is positioned at a position parallel to
, And detects the amount of movement of the connection frame 124 that moves in parallel by the expansion and contraction of the rod 102B. The position sensor 128 is also a position sensor 116
Similarly to the above, the detection contact needle 128 </ b> B does not directly contact the peripheral surface of the lens frame 84, but abuts on the connection frame 124 which can indirectly detect the amount of movement of the movable lens 70. Reference numeral 130A denotes the speed generator 1
30 is a bobbin, and reference numeral 130B is a core forming the speed generator 130. This core 1
30B is fixed to the connection frame 124. The internal structure of the anti-vibration adapter 10 is shown in FIG.
The movable lens 70 is not limited to the configuration shown in FIG.
Various structures are possible for a specific structure in which the actuator is appropriately moved by a driving means such as an actuator. FIG. 8 is a block diagram showing a drive control system of the movable lens 70. The angular velocity sensor 132 shown in FIG.
Reference numeral 134 is provided inside the anti-vibration adapter 10 (inside the rear plate 34). One of the angular velocity sensors 272 detects the vibration in the left-right component of the vibration transmitted to the monitoring camera device 12, and the detected information is
6 is output. The CPU 136 calculates a correction amount in the left-right direction to be given to the movable lens 70 based on the information received from the angular velocity sensor 132. The 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. 7). The linear motor 100 operates to extend or contract the rod 100B by an amount corresponding to the command signal from the CPU 136, and moves the movable lens 70 to the image blur correction position. Thereby, the vibration component in the left-right direction is canceled by the movement of the movable lens 70, and the image blur in the left-right direction is suppressed. When the movable lens 70 moves in the left-right direction, the position sensor 116 detects the moving position of the connecting frame 112. A position signal detected by the position sensor 116;
A signal indicating the corrected movement amount output from the CPU 136 is compared, and the linear motor 100 is feedback-controlled to position the movable lens 70 at a position corresponding to the corrected movement amount. Similarly, the other angular velocity sensor 134 detects the vertical component of the vibration transmitted to the monitoring camera device 12, and the detected information is transmitted to the CPU 13.
6 is output. The CPU 136 includes an angular velocity sensor 134
A vertical movement amount to be given to the movable lens 70 is calculated based on the information received from the controller, and a signal indicating the vertical movement amount is output to the linear motor 102 (see FIG. 7) via the amplifier 138. . Linear motor 102
Operates to extend or contract the rod 102B by an amount corresponding to the command signal from the CPU 136, and moves the movable lens 70 to the image blur correction position. Accordingly, the vertical vibration component is canceled by the movement of the movable lens 70, and the vertical image blur is suppressed. When the movable lens 70 moves up and down, the position sensor 128 detects the moving position of the connecting frame 124. The detected position signal is compared with a signal indicating the corrected movement amount output from the CPU 136,
The linear motor 102 is feedback-controlled so that the movable lens 70 is located at a position corresponding to the correction movement amount. As described above, according to the anti-vibration adapter according to the present invention, since the lens supporter is integrally formed in advance, the anti-vibration adapter can be attached to the camera platform simply by attaching the lens supporter to the camera platform. Can be attached. In addition, since a connection portion with the lens device and a connection portion with the camera are provided on the anti-vibration adapter, and the lens device and the camera are directly connected to the anti-vibration adapter via these connection portions, positioning with respect to the lens device and the camera can be easily performed. It can be carried out.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a surveillance camera device to which an anti-vibration adapter according to an embodiment is applied. FIG. 2 is a perspective view of the anti-vibration adapter shown in FIG. 3 is a perspective view of the anti-vibration adapter shown in FIG. 1 as viewed from the camera side. FIG. 4 is a side view of the anti-vibration adapter shown in FIG. 1. FIG. 5 is an enlarged view of a main part of the anti-vibration adapter shown in FIG. FIG. 6 is a cross-sectional view of a C-mount of the anti-vibration adapter. FIG. 7 is a front view showing a support structure of a movable lens built in the anti-vibration adapter. FIG. 8 is a control of the anti-vibration mechanism shown in FIG. [Description of reference numerals] 10: anti-vibration adapter, 12: surveillance camera device, 14: pan head device, 18: lens supporter, 19: EFP lens,
20: CCD camera, 58: Camera support, 60: Lens barrel, 62: C mount, 92: Support plate, 94: Reinforcement plate

Claims (1)

Claims: 1. An anti-vibration adapter including a correction lens disposed between a lens device and a camera and configured to correct image blur caused by vibration applied to the camera. The adapter is provided with a connection portion with the lens device and a connection portion with the camera, and a lens supporter for supporting the lens device on a camera platform is integrally formed in advance. Anti-vibration adapter.