JP4733657B2 - Vibration isolator - Google Patents

Description

  The present invention relates to a vibration isolator that suppresses vibrations of a camera device used, for example, in television program production, movie production, home video production, and the like.

  2. Description of the Related Art Conventionally, there are a passive type and an active type as a vibration isolator for a camera device in television program production, movie production, home video production, and the like.

  First, as a passive vibration isolator, what is called a “steady cam” that mechanically suppresses vibration is known (see, for example, Patent Document 1). In the device disclosed in Patent Document 1, the operator of the camera device wears a dedicated vest, and the camera mounting member is elastically supported on the metal provided in the lower portion of the vest to suppress vibrations generated by the movement of the body. As a result, the video is stabilized.

  Next, as an active vibration isolator, one that suppresses vibration optically or electronically is known. Those that optically suppress vibration include those called “anti-vibration lenses” and “relay lenses”, and those that electronically suppress vibrations include those that perform image processing.

  First, as a camera using an “anti-vibration lens”, for example, there is a video camera shown in the conventional technology column in Patent Document 2. This video camera includes a small acceleration sensor that detects shaking, a microcomputer that calculates a shake correction amount, and a variable apex angle prism that is a kind of liquid prism, and is variable based on the shake correction amount calculated by the microcomputer. The vertical angle prism is deformed, and the optical axis is forcibly refracted in the direction opposite to the shake to stabilize the image formation point, thereby preventing image blurring.

  Next, as a lens using a relay lens, for example, there is a zoom lens having an image stabilization function disclosed in Patent Document 3. Patent Document 3 includes a first lens group having a negative refractive power and a second lens group having a positive refractive power, and the second lens group has a first refractive power having a positive refractive power. This is composed of a front group of two lenses and a rear group of the second lens group having a positive refractive power, and camera shake correction is performed by decentering the rear group of the second lens group in a predetermined angular direction with respect to the optical axis. It is like that.

Next, for example, there is a television camera disclosed in Patent Document 4 that performs image processing to remove image blur. Patent Document 4 discloses an imaging unit (CCD) having an imaging surface wider than an imaging range necessary for a screen, a converter for converting a signal for detecting motion, and an imaging signal from the imaging unit. , A motion detection circuit for detecting the motion of the subject, and an image output range designation circuit for designating an image output range according to the detected motion of the subject. By comparing the signal and the signal stored in the memory to detect the movement of the entire image, the image output range specifying circuit changes the image output range output from the imaging unit in accordance with the detected movement, Image blur due to camera shake is removed.
US Patent No. 4,017,168 Japanese Patent No. 3197995 JP 2006-133370 A Japanese Patent No. 2696073

  However, the conventional vibration isolator has the following problems.

  First of all, the “steady cam” is very effective in preventing image blurring, but this device alone has a weight of nearly 20 kg, and the photographer says that the entire device including the camera device is held in front of the waist. Since this is a special structure that increases the burden on the photographer, the burden on the weight of the photographer's waist is greater than when a general camera device is placed on the shoulder, and can only be handled by a specific person.

  In addition, camera devices used in conventional television program production are generally shoulder-mounted, so photographers are accustomed to shooting with the shoulder-mounted type. Since it was very different from the shooting posture of the mounting type camera device, it was not easy to use and was not used in normal shooting.

  In addition, for example, television programs include news programs that must be reported lively through incidents and accidents. In this news program, there is often no room for shooting with the camera device fixed to a tripod, and it is preferable that the shooting can be started in a short time. From this point as well, since the shoulder-mounted camera device can start shooting more quickly than “Steadycam”, which takes time to prepare for shooting, “Steadycam” is not used for programs that require quickness. there were.

  On the other hand, the active type vibration isolator can be applied to the above-mentioned news program that requires quickness, but has the following problems.

  First of all, there is a problem that the image quality is deteriorated in the one that optically suppresses vibration such as “anti-vibration lens” and “relay lens” because the resolution deteriorates and chromatic aberration occurs in the peripheral portion of the image. . The “anti-vibration lens”, “relay lens”, and the like have a weight of about 2 to 3 kg. However, since they are provided at the lens portion located at the tip of the camera device, they are more weight-free than a general camera device. Was a burden.

  Next, what removes image blur by performing image processing is to change the cut-out position of video data acquired by the CCD using a CCD that can shoot a shooting area larger than the size displayed on the screen. However, there is a problem that the range in which image blur can be corrected is limited by the cycle of frames in which video is captured, and there is a problem that the circuit scale becomes larger than a general one. In addition, in the case of targeting a wider range of video than conventional ones, such as high-definition television, there is a problem that it is difficult to realize in terms of technology and cost because the scale of the CCD is further increased.

  The present invention has been made to solve the above-described problems, and provides a vibration isolator capable of suppressing the vibration of the camera device while following the conventional general shoulder-mounted shooting style. For the purpose.

The vibration isolator of the present invention is a vibration isolator that suppresses vibration of a camera device that photographs a subject by placing it on the shoulder of the photographer, and the shoulder when the photographer places the camera device on the shoulder and supports it. A shoulder support unit that applies a vibration, a vibration detection unit that detects vibration of the camera device, a vibration suppression unit that suppresses the detected vibration between the camera device and the shoulder support unit, and a lens of the camera device A cylindrical optical system adjustment unit that allows the photographer to manually adjust the optical system of the camera device on the outside of the lens barrel, and the vibration suppression unit is configured by one of a piezo actuator and a rotary motor. When the vibration suppressing unit is constituted by a piezo actuator, the light of the lens barrel is sandwiched by a ball bearing provided at a connecting unit that connects the camera device and the shoulder pad. Axis aligned Two telescopic piezo actuators that are provided and suppress vibrations in the pitching direction, and two telescopic piezo actuators that are provided side by side in a direction orthogonal to the optical axis direction and suppress vibrations in the rolling direction. When the vibration suppression unit is configured by a rotary motor, a first rotation motor that suppresses vibration in the pitching direction of the camera device and a second rotation that suppresses vibration in the rolling direction of the camera device. A motor for adjusting the focus, and an iris ring for adjusting the iris, and the focus ring and the iris ring. The focus driving motor and the iris driving motor in the lens barrel are driven by the rotation amount, respectively. Is intended, together with the vibration absorbing portion provided between said optical system adjusting portion and the lens barrel is disengaged the lens barrel and the optical system adjusting portion, the vibration absorbing portion is the photographer the It has a configuration that absorbs vibration generated when operating the optical system adjustment unit.

With this configuration, the vibration isolator of the present invention suppresses the vibration of the camera device between the camera device and the shoulder pad, so that the vibration of the camera device can be suppressed while following the conventional general shoulder-mounted shooting style. Can be suppressed. In addition, it is possible to suppress vibration applied to the camera device when the photographer performs optical system adjustment such as focus adjustment and iris adjustment.

Furthermore, the vibration isolator of the present invention is a vibration isolator that suppresses vibration of a camera device that photographs a subject by placing it on the shoulder of the photographer, and when the photographer places the camera device on the shoulder to support it. A shoulder contact portion that touches the shoulder, a vibration detection portion that detects vibration of the camera device, a vibration suppression portion that suppresses the detected vibration between the camera device and the shoulder support portion, and the camera device A cylindrical optical system adjustment unit that allows the photographer to manually adjust the optical system of the camera device on the outside of the lens barrel, and the vibration suppression unit is one of a piezo actuator and a rotary motor When the vibration suppressing portion is constituted by a piezo actuator, the lens barrel is sandwiched between ball bearings provided at a connecting portion that connects the camera device and the shoulder rest portion. Optical axis direction Two telescopic piezo actuators that are arranged side by side and suppress vibrations in the pitching direction, and two telescopic piezo actuators that are provided side by side in a direction orthogonal to the optical axis direction and suppress vibrations in the rolling direction And when the vibration suppression unit is configured by a rotary motor, a first rotary motor that suppresses vibration in the pitching direction of the camera device and a first that suppresses vibration in the rolling direction of the camera device. 2, and the optical system adjustment unit includes a focus ring for adjusting the focus and an iris ring for adjusting the iris, and the focus ring and the iris. Depending on the amount of rotation of the ring for the lens, the motor for driving the focus and the motor for driving the iris are respectively provided in the lens barrel. Is intended to be dynamic, provided by isolating the optical system adjusting portion from the lens barrel by connecting portion that connects to the shoulder rest portion for holding said optical system adjusting portion, the photographer said optical system adjusting The vibration generated when operating the unit is not directly transmitted to the lens barrel.

With this configuration, the vibration isolator of the present invention suppresses the vibration of the camera device between the camera device and the shoulder pad, so that the vibration of the camera device can be suppressed while following the conventional general shoulder-mounted shooting style. Can be suppressed. In addition, it is possible to suppress vibration applied to the camera device when the photographer performs optical system adjustment such as focus adjustment and iris adjustment.

  With this configuration, the vibration isolator of the present invention can suppress vibration of the camera device between the camera device and the shoulder pad using either a piezo actuator or a motor.

  The present invention can provide a vibration isolator having an effect of suppressing vibration of a camera device while following a conventional general shoulder-mounting photographing style.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. A description will be given by taking as an example a camera system that includes the image stabilizer of the present invention and a camera device for producing broadcast programs.

(First embodiment)
First, the configuration in the first embodiment of the camera system provided with the vibration isolator according to the present invention will be described with reference to FIG. 1 and FIG. 1A is an external view conceptually showing the camera system in the present embodiment, FIG. 1B is a cross-sectional view conceptually showing a cross section AA in FIG. 1A, and FIG. c) is a sectional view conceptually showing a BB section in FIG. 1A to 1C are conceptual diagrams in which each component is exaggerated for easy understanding of the features of the present invention, and each component is represented at the same scale. It is not a thing. FIG. 2 shows a block diagram in the present embodiment of the vibration isolator according to the present invention.

  As shown in FIG. 1, the camera system 100 according to the present embodiment includes a camera device 1, a vibration isolation device 10, and an optical system adjustment unit 20.

  The camera device 1 includes a cylindrical lens barrel 2 including a lens 2a, and a focus driving motor 3 and an iris driving motor 4 that drive a focus adjustment unit and an iris adjustment unit (not shown), respectively. .

  The anti-vibration device 10 includes a gyro sensor 11 that detects vibration of the camera device 1, a shoulder pad portion 16 on which a photographer touches the shoulder, a connecting portion 17 that connects the camera device 1 and the shoulder pad portion 16, and a camera device And a telescopic piezo actuator 18 (18a to 18d) that expands and contracts so as to cancel the displacement caused by the vibration of 1. Here, the connecting portion 17 includes a ball bearing 17a. When the piezo actuator 18 expands and contracts, the camera device 1 changes its posture with the ball bearing 17a as a reference.

  Note that it is preferable to reduce the weight of the shoulder pad 16 by making the shoulder pad 16 a hollow structure or by making the shoulder pad 16 lightweight such as plastics.

  The optical system adjustment unit 20 includes a cylindrical support member 21 provided apart from the lens barrel 2, a focus ring 22 for adjusting the focus, an iris ring 23 for adjusting the iris, and a focus. The focus ring rotation amount detection sensor 24 for detecting the rotation amount of the ring 22, the iris ring rotation amount detection sensor 25 for detecting the rotation amount of the iris ring 23, and the cylindrical support 21 are separated from the lens barrel 2. And a suspension 26 that absorbs vibrations when the photographer operates, and a zoom switch 27 that adjusts the zoom by a zoom motor (not shown) according to the amount of pressing.

  The suspension 26 corresponds to the vibration absorbing portion of the present invention. In addition, it is preferable to reduce the weight of the optical system adjustment unit 20 by making the material of each component of the optical system adjustment unit 20 lightweight such as plastics.

  Since the optical system adjustment unit 20 is configured as described above, even if the photographer operates the focus ring 22, the iris ring 23, and the zoom switch 27, vibrations generated during the operation are generated by the camera device 1. It is hard to be transmitted to. The camera device 1 and the optical system adjustment unit 20 are connected by a cable or a flexible substrate, but these are not shown.

  Although not shown in FIG. 1, the vibration isolator 10 has a configuration for processing an electrical signal output from the gyro sensor 11, and a configuration example thereof is shown in FIG. That is, the vibration isolator 10 includes an AD conversion unit 12 that converts an analog signal output from the gyro sensor 11 into a digital signal, a shooting direction setting unit 13 that sets a shooting direction of the camera device 1 that is directed toward a subject, and a camera. A correction value calculation unit 14 that calculates a correction value for canceling and stabilizing the vibration of the apparatus 1, a piezo actuator drive unit (hereinafter referred to as “PA drive unit”) 15 that drives the piezo actuator 18, and a piezo actuator. A displacement amount detection unit 19 for detecting 18 displacement amounts.

  The gyro sensor 11 is configured by, for example, an optical fiber gyro, and detects the angular velocity of the camera device 1 when the camera device 1 is placed on the shoulder of the photographer via the shoulder pad 16, thereby vibrating the photographer. Is detected, and the detected information is output to the AD converter 12 as an electrical signal of an analog value. Here, the analog electrical signal output from the gyro sensor 11 includes a signal component indicating a direction in which the camera apparatus 1 vibrates in the vertical direction (hereinafter referred to as “pitching direction”), and the camera apparatus 1 vibrates in the horizontal direction. And a signal component indicating a direction (hereinafter referred to as “rolling direction”). The gyro sensor 11 corresponds to the vibration detection unit of the present invention.

  The AD conversion unit 12 converts an analog electrical signal output from the gyro sensor 11 into a digital electrical signal and outputs the digital electrical signal to the imaging orientation setting unit 13 and the correction value calculation unit 14.

  Although not shown, the shooting direction setting unit 13 includes a shooting direction calculation circuit and a shooting direction setting switch, for example, and serves as a shooting reference for the camera device 1 directed to the subject based on the output signal of the AD conversion unit 12. A shooting direction (hereinafter referred to as “shooting reference direction”) is set. Here, the photographing reference azimuth includes photographing reference azimuth components in the pitching direction and the rolling direction. The reference value calculation circuit includes, for example, a CPU (Central Processing Unit), a ROM (Read-Only Memory), a RAM (Random-Access Memory), and the like. The shooting direction setting switch is provided, for example, in the optical system adjustment unit 20 and is turned on or off by the photographer.

  Specifically, when the photographer points the camera device 1 at the subject, captures it at a certain angle of view, and turns on the photographing orientation setting switch, the photographing orientation calculation circuit sets the orientation directed at the subject as the photographing reference orientation. These are stored in the RAM of the shooting direction setting unit 13. Therefore, by comparing the relative azimuth at a certain time with respect to the photographing reference azimuth stored in the RAM, the displacement of the pitching direction and the rolling direction at that time with respect to the photographing reference azimuth can be known.

  The configuration of the shooting direction setting unit 13 is not limited to the above-described one. For example, the shooting direction setting unit 13 monitors the output signal of the AD conversion unit 12, and when the vibration width in the pitching direction and the rolling direction is within a predetermined width, the photographer points the camera device 1 toward the subject. It is also possible to adopt a configuration in which the azimuth at that time is set as the reference azimuth. Further, for example, a function for detecting the absolute azimuth can be added to the gyro sensor 11, and the photographing azimuth setting unit 13 can set the photographing reference azimuth based on the absolute azimuth data. In addition, a configuration in which the function of the shooting direction setting switch is provided in a switch of a general camera device, for example, a recording start switch may be employed.

  The correction value calculation unit 14 includes, for example, a CPU, a ROM, a RAM, and the like, and calculates a correction value for canceling and stabilizing the vibration of the camera device 1 based on the shooting reference direction set by the shooting direction setting unit 13. It is supposed to be. This correction value includes correction components for the pitching direction and the rolling direction with respect to the shooting reference direction set by the shooting direction setting unit 13.

  The PA drive unit 15 converts the correction value calculated by the correction value calculation unit 14 into a voltage, and applies the converted voltage to each of the piezo actuators 18a to 18d.

  Each of the piezo actuators 18a to 18d expands and contracts in accordance with the voltage output from the PA drive unit 15. As shown in FIG. 1C, the piezo actuators 18a and 18b are provided with a ball bearing 17a interposed therebetween, and suppress vibration in the pitching direction of the camera device 1. The piezo actuators 18c and 18d are provided with the ball bearing 17a interposed therebetween, and suppress vibrations in the rolling direction of the camera device 1. The piezo actuators 18a to 18d correspond to the vibration suppressing unit of the present invention.

  Here, the range of vibration that can be suppressed by the piezoelectric actuator 18 will be described. In FIG. 1C, Dp represents the distance between the piezoelectric actuators 18a and 18b, and Dr represents the distance between the piezoelectric actuators 18c and 18d. For example, when Dp = Dr = 3 cm and the range in which the piezo actuators 18a and 18b extend and contract is 200 μm, the angle range in which the piezo actuators 18a and 18b can be adjusted is 0.38 degrees. This corresponds to a displacement of about 66 cm at a distance of 100 m and a displacement of about 200 cm at a distance of 300 m, and is a range in which a sufficient suppression effect can be obtained with respect to vibrations in the pitching direction and the rolling direction. In particular, in the shoulder-mounted shooting style, vibrations in the pitching direction are likely to occur, and vibrations in this direction tend to cause discomfort to the viewer, but the vibration in the pitching direction can be substantially suppressed by the above-described configuration.

  The displacement amount detection unit 19 includes displacement amount detection sensors 19a to 19d and a displacement amount detection unit 19e. The displacement amount detection unit 19 detects displacement due to expansion and contraction of the piezoelectric actuator 18 and feeds back to the PA drive unit 15.

  The displacement amount detection sensors 19a to 19d are configured by, for example, capacitance sensors, and detect displacement amounts due to expansion and contraction of the piezoelectric actuators 18a to 18d, respectively.

  The displacement amount detection unit 19e is configured to output displacement amount data of the piezoelectric actuators 18a to 18d detected by the displacement amount detection sensors 19a to 19d to the PA drive unit 15, respectively.

  Therefore, the PA drive unit 15 can improve the linearity of the piezoelectric actuator 18 and eliminate hysteresis and creep by performing feedback control, and can accurately control the displacement amount of the piezoelectric actuator 18.

  Next, the operation of the camera system 100 in the present embodiment will be described.

  First, the gyro sensor 11 outputs an analog signal corresponding to the attitude of the camera device 1 to the AD conversion unit 12.

  Next, the AD conversion unit 12 converts the analog signal from the gyro sensor 11 into a digital signal and outputs the digital signal to the shooting direction setting unit 13 and the correction value calculation unit 14.

  Here, it is assumed that the photographer captures the subject and presses the shooting direction setting switch (not shown) of the shooting direction setting unit 13. The shooting direction setting unit 13 sets the direction when the shooting direction setting switch is pressed as the shooting reference direction and stores the data.

  Subsequently, the correction value calculation unit 14 reads out the photographing reference azimuth data from the photographing azimuth setting unit 13 and suppresses vibration of the camera device 1 based on the photographing reference azimuth data and the signal from the AD conversion unit 12. The correction value is calculated and output to the PA drive unit 15.

  Next, the PA drive unit 15 outputs a voltage corresponding to the correction value calculated by the correction value calculation unit 14 to each of the piezoelectric actuators 18a to 18d, and expands or contracts the piezoelectric actuators 18a to 18d. Here, the displacement amount detection unit 19 detects the displacement amount of each of the piezo actuators 18a to 18d, and feeds back these data to the PA drive unit 15, thereby adjusting the displacement amount to the target displacement amount.

  Thereafter, until the shooting direction setting switch is turned off, the correction value calculation unit 14 continues to calculate the correction value so as to suppress the vibration detected by the gyro sensor 11, and the PA driving unit 15 performs the piezo actuator 18a based on the correction value. By extending or reducing ˜18d, the vibration isolator 10 suppresses vibration of the camera device 1 and prevents image blurring.

  As described above, according to the vibration isolator 10 in the present embodiment, the gyro sensor 11 that detects the vibration of the camera device 1, the shoulder rest 16 on which the photographer touches the shoulder, the camera device 1 and the shoulder rest 16 and a telescopic piezo actuator 18 that expands and contracts so as to cancel displacement caused by vibration of the camera device 1, and the camera device 1 vibrates between the camera device 1 and the shoulder pad 16. Therefore, the vibration of the camera device 1 can be suppressed while following the conventional general shoulder-mounting shooting style. Therefore, the camera system 100 provided with the image stabilizer 10 in the present embodiment can alleviate the discomfort caused by the image blur given to the viewer.

  In addition, since the vibration isolator 10 according to the present embodiment can suppress the vibration of the camera device 1 while following the conventional general shoulder-mounting shooting style, shooting is performed more than when using “steady cam”. The burden of weight on the waist of the person can be greatly reduced. Therefore, unlike the “steady cam” that can be handled only by a specific person, the image stabilizer 10 according to the present embodiment realizes a camera device with an anti-vibration function that can be easily handled by a general photographer. Can do.

  Furthermore, since the vibration isolator 10 according to the present embodiment can suppress the vibration of the camera device 1 while following a conventional general shoulder-mounted shooting style, the time for installing a tripod can be reduced. It can also be used for programs that require quickness.

  Furthermore, the vibration isolator 10 in the present embodiment does not change the optical system in order to suppress the vibration of the camera device 1, unlike the “anti-vibration lens” or the “relay lens”. Vibration can be suppressed without degrading the image quality.

  Further, the vibration isolator 10 according to the present embodiment is not provided with a device for suppressing vibration of the camera device 1 in the lens unit, unlike a device using “anti-vibration lens” or “relay lens”. The burden of weight on the photographer can be reduced.

  Furthermore, unlike the apparatus for removing image blur by performing image processing, the image stabilizer 10 in the present embodiment is not configured to use a CCD that can shoot a shooting area larger than the size displayed on the screen. The problem that the range in which the image blur can be corrected is limited by the cycle of the frame in which the video is captured and the problem that the circuit scale becomes larger than a general one can be solved.

  Further, the vibration isolator 10 according to the present embodiment is different from the image processing apparatus that removes image blur by performing image processing even when a wider range of images than conventional ones such as a high-definition television is targeted. Image blur can be removed without further increasing the scale.

  In the above-described embodiment, the configuration in which the camera apparatus 1 and the vibration isolator 10 are integrated has been described as an example. However, the present invention is not limited to this, and the camera apparatus 1 and the vibration isolator 10 are integrated. The structure which can isolate | separate with the apparatus 10 may be sufficient.

  In the above-described embodiment, the example in which vibration is detected by the gyro sensor 11 has been described. However, the present invention is not limited to this, and for example, an acceleration sensor, a tilt sensor, an ultrasonic sensor, or the like is used. May be.

  In the above-described embodiment, the four piezoelectric actuators 18a to 18d are described as examples of suppressing vibrations in the pitching direction and the rolling direction. However, the present invention is not limited to this and is used for applications. Accordingly, it may be configured to suppress vibration only in the pitching direction or only in the rolling direction. For example, only two piezoelectric actuators 18a and 18b may be used to suppress vibration in the pitching direction only. Further, the number of the piezoelectric actuators 18 may be three instead of four, for example, and the vibration of the camera device 1 may be suppressed by supporting three points.

  In the above-described embodiment, the example in which vibration is suppressed by the piezoelectric actuator 18 has been described. However, the present invention is not limited to this, and a linear motor, a cylinder, or the like may be used, for example.

  In the above-described embodiment, the configuration in which the optical system adjustment unit 20 includes the suspension 26 has been described as an example. However, the suspension 26 is not essential. However, a structure in which vibration due to adjustment of the optical system is not easily transmitted to the camera device 1 is preferable.

  In the above-described embodiment, the configuration in which the optical system adjustment unit 20 is provided on the outer periphery of the lens barrel 2 has been described as an example. However, the present invention is not limited to this, and for example, the optical system adjustment unit 20 may be provided in the shoulder pad 16.

(Second Embodiment)
As shown in FIG. 3, the camera system 200 in the present embodiment is similar in configuration to the camera system 100 because a part of the configuration differs from the camera system 100 (see FIG. 1) in the first embodiment. The same reference numerals are given to the components, and description thereof is omitted.

  The camera system 200 according to the present embodiment includes a connecting unit 30 that holds the optical system adjusting unit 20 in connection with the shoulder pad 16, and eliminates the suspension 26 (see FIG. 1B) in the camera system 100. The optical system adjustment unit 20 is provided separately from the lens barrel 2. In addition, it is preferable to reduce the weight of the connecting portion 30 by making the connecting portion 30 have a hollow structure or by using a lightweight material such as plastics for the connecting portion 30.

  Since the camera system 200 in the present embodiment is configured as described above, even when the photographer touches the optical system adjustment unit 20 and performs operations such as adjusting the focus, iris, and zoom, Therefore, the vibration caused by the adjustment of the optical system can be suppressed, and the unpleasant feeling caused by the image blur given to the viewer can be alleviated.

  As described above, according to the vibration isolator in the present embodiment, the optical system adjustment unit 20 is provided with the connection unit 30 that holds the optical system adjustment unit 20 in connection with the shoulder pad 16, and the photographer touches the optical system adjustment unit 20. Even if an operation for adjusting the optical system is performed, the vibration generated during the operation is not transmitted to the camera device 1 via the lens barrel 2, so that it follows the conventional general shoulder-mount shooting style. However, the vibration of the camera device 1 can be suppressed.

  Therefore, the camera system 200 provided with the image stabilizer in this embodiment can alleviate discomfort caused by image blurring given to the viewer.

  In the above-described embodiment, the example in which the optical system adjustment unit 20 is cylindrical has been described. However, the present invention is not limited to this, and the optical system adjustment unit 20 is, for example, semicircular, A similar effect can be obtained by adopting a shape such as a “U” shape, a “U” shape, or the like and covering at least a part of the outer periphery of the lens barrel 2.

(Third embodiment)
As shown in FIG. 4, the camera system 300 in the present embodiment is similar in structure to the camera system 200 because a part of the configuration is different from the camera system 200 (see FIG. 3) in the second embodiment. The same reference numerals are given to the components, and description thereof is omitted.

  The camera system 300 according to the present embodiment includes a support 41 provided on the shoulder pad 16, a rotation motor 42 that is fixed to the support 41 and changes the shooting direction of the camera device 1 in the pitching direction, and the support 41. And support devices 43a and 43b provided in the camera device 1 respectively, and a rotation motor 44 fixed to the support devices 43a and 43b and changing the shooting direction of the camera device 1 in the rolling direction.

  In addition, it is preferable to achieve weight reduction by making the support tools 41, 43a and 43b have a hollow structure, or making these materials lightweight such as plastics. In addition, it is preferable to use rotary motors 42 and 44 that are lightened.

  Although not shown, the camera device 1 includes a drive circuit that drives the rotation motors 42 and 44 separately, and a transmission device that changes the shooting direction of the camera device 1 in the pitching direction according to the rotation of the rotation motor 42. A transmission device is provided that changes the shooting direction of the camera device 1 in the rolling direction in accordance with the rotation of the rotary motor 44. The rotary motors 42 and 44 correspond to the vibration suppressing unit of the present invention.

  Since the camera system 300 in the present embodiment is configured as described above, by controlling the rotation motors 42 and 44 to suppress the vibration of the camera device 1 detected by the gyro sensor 11, the camera system 300 of the camera device 1 is controlled. Vibration can be suppressed.

  As described above, according to the vibration isolator of the present embodiment, the gyro sensor 11 that detects the vibration of the camera device 1, the shoulder rest 16 on which the photographer touches the shoulder, the camera device 1 and the shoulder rest 16. And the rotation motors 42 and 44 for suppressing the vibration of the camera device 1 and the configuration for suppressing the vibration of the camera device 1 between the camera device 1 and the shoulder pad 16. The vibration of the camera device 1 can be suppressed while following the conventional general shoulder-mount shooting style.

  Therefore, the camera system 300 provided with the image stabilizer in this embodiment can alleviate the discomfort caused by the image blur given to the viewer.

  In the above-described embodiment, the configuration including the connecting portion 30 that connects and holds the optical system adjusting portion 20 with the shoulder rest portion 16 has been described as an example. However, the present invention is not limited to this. Alternatively, the optical system adjustment unit 20 having the suspension 26 as shown in FIG. 1B may be provided, and the connection unit 30 may be omitted.

  As described above, the vibration isolator according to the present invention has an effect that the vibration of the camera device can be suppressed while following the conventional general shoulder-mount shooting style. It is useful for suppressing vibrations of camera devices used for production and home video production.

The figure which shows the notional structure in 1st Embodiment of the camera system provided with the vibration isolator which concerns on this invention (a) The external view which shows a camera system notionally (b) AA cross section in Fig.1 (a) (C) Cross-sectional view conceptually showing the BB cross-section in FIG. 1 (a) The block diagram in 1st Embodiment of the vibration isolator which concerns on this invention The figure which shows the notional structure in 2nd Embodiment of the camera system provided with the vibration isolator which concerns on this invention (a) The external view which shows a camera system notionally (b) AA cross section in Fig.3 (a) (C) Cross-sectional view conceptually showing the BB cross-section in FIG. The figure which shows the notional structure in 3rd Embodiment of the camera system provided with the vibration isolator which concerns on this invention (a) The external view which shows a camera system notionally (b) AA cross section in Fig.4 (a) (C) Cross-sectional view conceptually showing the BB cross-section in FIG. 4 (a)

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Camera apparatus 2 Lens barrel 2a Lens 3 Focus drive motor 4 Iris drive motor 10 Vibration isolator 11 Gyro sensor (vibration detection part)
DESCRIPTION OF SYMBOLS 12 AD conversion part 13 Image | photographing azimuth | direction setting part 14 Correction value calculation part 15 PA drive part 16 Shoulder pad part 17 Connection part 17a Ball bearing 18 (18a-18d) Piezo actuator (vibration suppression part)
DESCRIPTION OF SYMBOLS 19 Displacement amount detection unit 19a-19d Displacement amount detection sensor 19e Displacement amount detection part 20 Optical system adjustment part 21 Cylindrical support tool 22 Focus ring 23 Iris ring 24 Focus ring rotation amount detection sensor 25 Iris ring rotation amount detection Sensor 26 Suspension (vibration absorber)
27 Zoom switch 30 Connection part 41, 43a, 43b Support tool 42, 44 Rotation motor (vibration suppression part)
100, 200, 300 camera system

Claims (2)

An anti-vibration device that suppresses vibration of a camera device that shoots a subject on the shoulder of a photographer,
When the photographer puts the camera device on the shoulder and supports the camera device, a shoulder contact portion that contacts the shoulder, a vibration detection portion that detects vibration of the camera device, and the detected vibration of the camera device and the shoulder support. A vibration suppression unit that suppresses between the lens unit, and a cylindrical optical system adjustment unit that the photographer manually adjusts the optical system of the camera device outside the lens barrel of the camera device,
The vibration suppression unit is configured by one of a piezo actuator and a rotary motor, and when the vibration suppression unit is configured by a piezo actuator, the camera device and the shoulder support unit are connected to each other. Two telescopic piezo actuators arranged side by side in the optical axis direction of the lens barrel with a ball bearing provided in the connecting portion therebetween, and suppressing vibration in the pitching direction, and a direction orthogonal to the optical axis direction When the vibration suppression unit is composed of a rotary motor, the vibration of the camera device is suppressed in the pitching direction. And a second rotary motor that suppresses vibration in the rolling direction of the camera device,
The optical system adjustment unit includes a focus ring for adjusting a focus and an iris ring for adjusting an iris, and the rotation amount of the focus ring and the iris ring is Drive the focus drive motor and iris drive motor in the lens barrel,
A vibration absorption unit provided between the optical system adjustment unit and the lens barrel separates the optical system adjustment unit and the lens barrel, and the vibration absorption unit is provided by the photographer as the optical system adjustment unit. An anti-vibration device that absorbs vibration generated when operating the An anti-vibration device that suppresses vibration of a camera device that shoots a subject on the shoulder of a photographer,
When the photographer puts the camera device on the shoulder and supports the camera device, a shoulder contact portion that contacts the shoulder, a vibration detection portion that detects vibration of the camera device, and the detected vibration of the camera device and the shoulder support. A vibration suppression unit that suppresses between the lens unit, and a cylindrical optical system adjustment unit that the photographer manually adjusts the optical system of the camera device outside the lens barrel of the camera device,
The vibration suppression unit is configured by one of a piezo actuator and a rotary motor, and when the vibration suppression unit is configured by a piezo actuator, the camera device and the shoulder support unit are connected to each other. Two telescopic piezo actuators arranged side by side in the optical axis direction of the lens barrel with a ball bearing provided in the connecting portion therebetween, and suppressing vibration in the pitching direction, and a direction orthogonal to the optical axis direction When the vibration suppression unit is composed of a rotary motor, the vibration of the camera device is suppressed in the pitching direction. And a second rotary motor that suppresses vibration in the rolling direction of the camera device,
The optical system adjustment unit includes a focus ring for adjusting a focus and an iris ring for adjusting an iris, and the rotation amount of the focus ring and the iris ring is Drive the focus drive motor and iris drive motor in the lens barrel,
When the photographer operates the optical system adjusting unit, the connecting unit connected to the shoulder support unit holds the optical system adjusting unit so that the optical system adjusting unit is isolated from the lens barrel. An anti-vibration device characterized in that generated vibration is not directly transmitted to the lens barrel.

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