JP6685757B2 - Optical device, camera system using the same, lens driving device - Google Patents

Description

  The present invention relates to an optical device, a camera system using the same, and a lens driving device.

  In recent years, many lens devices have been developed in which a lens driving device capable of electrically rotating an operating ring for zooming or focusing can be mounted, and such a lens device is disclosed in Japanese Patent Application Laid-Open No. 2004-242242.

  Patent Document 1 can mount a lens driving device provided with a gear part of which is exposed to fit with an operation ring of the lens device and a button for operating the gear, and information from the lens driving device can be attached. It discloses a configuration of a lens device having a connection portion for receiving the. By providing such a lens driving device, it is possible to realize smooth zoom-in or zoom-out as an image expression.

JP, 2007-108373, A

Here, it is assumed that the driving means for driving the lens unit is controlled so as to rapidly accelerate or decelerate the lens unit in order to quickly change the magnification or focus during still image shooting. Such a control, the lens driving device as in Patent Document 1 described above is mounted, when applied to the lens device in the moving image shooting mode, the noise produced by the lens unit is abruptly accelerated or decelerated is recorded There is a risk that

  Therefore, an object of the present invention is to provide an optical device capable of shortening the focusing time at the time of shooting a still image and reducing noise at the time of shooting a moving image, a camera system using the same, and a lens driving device. And

In order to achieve the above object, the optical device of the present invention,
Lens drive including first operating means, first driving means that is driven based on the operation of the first operating means, and transmitting means that transmits operation information based on the operation of the first operating means An optical device to which the device can be attached,
A focus lens unit that moves for focusing,
A variable power lens unit that moves for variable power,
Second operating means for moving the variable power lens unit in the optical axis direction,
Second driving means for moving the focus lens unit in the optical axis direction,
When the driving force from the first driving means is not transmitted to the second operating means, the first control is performed on the second driving means, and the driving force from the first driving means is In a state of being transmitted to the second operation means, the control means for performing the second control, in which the absolute value of the acceleration is smaller than that of the first control, for the second drive means based on the operation information from the transmission means. and, wherein a call with a.

  According to the present invention, it is possible to provide an optical device capable of shortening a focusing time at the time of shooting a still image and reducing noise at the time of shooting a moving image, a camera system using the same, and a lens driving device. .

1 is a system configuration diagram of a lens device, a lens driving device, and a camera body in Embodiment 1. FIG. FIG. 5 is a diagram showing a flowchart regarding focusing control in the first embodiment. 6A and 6B are diagrams showing control regarding movement of the focus lens unit in Embodiment 1. FIG. FIG. 8 is a diagram showing a driving flowchart of the diaphragm device in the second embodiment. FIG. 8 is a diagram showing control relating to driving of the diaphragm device in the second embodiment. FIG. 8 is a diagram showing a driving flowchart of the image blur correction device in Embodiment 3. FIG. 13 is a diagram showing a relationship between an image blur amount and an image blur correction result in the third embodiment. 6A and 6B are diagrams illustrating a state of image blur correction during still image shooting and moving image shooting according to the third embodiment.

  Preferred embodiments of the present invention will be exemplarily described below with reference to the drawings. However, the relative arrangement of the components described in this embodiment and the like should be appropriately changed depending on the configuration of the device to which the present invention is applied and various conditions. That is, the present invention is not limited to the embodiments described below, and various modifications and changes can be made within the scope of the gist thereof.

  Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

[First Embodiment]
Hereinafter, the lens apparatus and the image pickup apparatus using the same according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 3. First, with reference to FIG. 1, a system configuration of the lens device 100, the adapter (lens driving device) 200, and the camera body 300 of the present invention will be described.
In FIG. 1, the optical axis direction of the lens device 100 is defined as the x-axis direction, and a system in which the lens device 100, the adapter 200, and the camera body 300 are combined is defined as a camera system. An apparatus including at least the lens apparatus 100 and the camera body 300 is an imaging apparatus. Further, the lens device 100 alone or the above-described image pickup device is an optical device.

(Structure of camera body)
First, the camera body 300 will be described. The camera body 300 includes an image pickup element 301 of an image pickup unit that photoelectrically converts a subject image, and a camera CPU 302 having functions of controlling the camera body, performing data communication with the lens apparatus 100, and instructing data.

  Further, a liquid crystal display unit 303 for displaying an image captured by the image pickup device 301, a focus detection unit 304, a main power source 305, and a mode selection unit 306 capable of selecting a moving image shooting mode and a still image shooting mode are included.

  The focus detection unit 304 includes a contrast AF (autofocus) that performs focus detection based on a high frequency component of the image signal from the image pickup device 301, a phase difference AF that performs focus detection using a phase difference between two divided images, and the like. It has a plurality of focusing means. In addition, power can be supplied from the camera body 300 to the lens apparatus 100 and other shooting information can be exchanged via the contact blocks (310, 120) provided in the camera body 300 and the lens apparatus 100, respectively.

(Structure of lens device)
Next, the lens device 100 will be described. On the outer circumference of the lens device 100, a focus ring (not shown) for manually adjusting the focus, and a zoom ring (second operation means, rotating member) 130 for rotating around the optical axis with an operation ring for adjusting the zoom magnification are provided. Is provided. Further, a gear portion 131 and a lens side contact block (reception means) 121 are provided. The zoom ring 130 is integrally provided with a gear portion 131. When the output gear 204 and the gear portion 131, which will be described later, are fitted to each other, the driving force from the zoom drive motor 202 is transmitted to the zoom ring 130, and the zoom ring 130 is then transmitted. It is possible to electrically rotate the.

  Inside the lens device 100, a fixed lens 101, a focus lens (focus lens unit) 102 for adjusting (focusing) a focus position, and a diaphragm device 103 for adjusting the amount of light are provided. Furthermore, an image blur correction lens (blurring correction lens unit) 104 that suppresses the influence of camera shake and the like to correct image blur, and a variable magnification lens (variable magnification lens unit) 105 that changes the zoom magnification are provided. Further, a zoom position detection unit 109 for detecting a zoom position (position of the variable power lens 105) and a gyro sensor 111 for detecting a shake amount are provided.

  Further, a focus drive source (second drive means) 106 for moving the focus lens 102 in the optical axis direction, and a diaphragm drive source (third drive source means) 107 for changing the aperture diameter of the diaphragm device 103. , Are provided. Further, an image blur correction drive source (fourth drive unit) 108 for moving the image blur correction lens 104 in the optical axis direction, and a lens CPU (control unit) 110 are provided. In this embodiment, the focus drive source 106 is an ultrasonic motor or a stepping motor, and the diaphragm drive source 107 is a stepping motor.

  A drive command is transmitted from the lens CPU 110, and the focus drive source 106, the diaphragm drive source 107, and the image blur correction drive source 108 drive the focus lens 102, the diaphragm device 103, and the image blur correction lens 104, respectively. The image blur correction lens 104 can be driven in the plane of the y axis and the z axis orthogonal to the optical axis x. By rotating the zoom ring 130, the variable power lens 105 moves in the optical axis direction, and the zoom magnification can be adjusted. Then, the lens device 100 and the adapter 200 can communicate lens information / adapter information with each other via a contact block (121/210) as a communication unit.

(Structure of lens driving device)
Next, the adapter 200 will be described. The adapter 200 is provided with a zoom driving motor (driving source) 202, a gear unit (first driving means) 203, and an output gear (first driving means) 204. The adapter 200 is fixed to the lens device 100 with a lock claw (not shown) that is attachable to and detachable from the lens device 100, and is transmitted to the lens device 100 via a contact block (transmitting means) 210. Send information.

  The zoom driving motor 202 transmits the driving force to the output gear 204 via the gear unit 203. Then, the output gear 204 meshes with the gear portion 131 (driven member) provided on the zoom ring 130 (rotating member) to electrically rotate the zoom ring 130, so that the lens device 100 can be zoom driven.

  Further, the adapter 200 is provided with a clutch mechanism 205 that releases the coupling between the zoom driving motor 202 and the gear unit 203, a clutch switch 206, and a CPU 201 that controls the motor and the like. With such a configuration, the adapter 200 can be in the electric mode and the manual mode. The electric mode is a mode in which the driving force from the zoom driving motor 202 is transmitted to the zoom ring 130 described above. In the manual mode, the driving force is not transmitted to the zoom ring 130 and the zoom ring 130 is manually rotated. This is a possible mode.

  Further, the adapter 200 is provided with a zoom switch (first operation means) 208, and the amount of movement by the slide operation is acquired by the movement amount detection unit 209 by sliding the zoom switch 208 in the optical axis direction.

  Then, the adapter CPU gives a drive signal to the zoom drive motor 202 and transmits information (operation information) about the movement amount (operation amount) and movement time (operation time) of the zoom switch 208 to the lens device 100, and the lens device 100. Drive the zoom.

(Control regarding movement of the focus lens unit during still image shooting and movie shooting)
Next, control of the focus lens 102 that is changed when the adapter 200 is attached to the lens device 100 will be described with reference to FIGS. 2 and 3.

  FIG. 2 is a flowchart regarding focus driving when the lens device 100 is zoom driven by the adapter 200. First, in S101, the lens CPU 110 determines whether or not the adapter 200 is attached to the lens device 100. Physically, it is determined whether the contact block 121 on the lens device 100 side and the contact block 210 on the adapter 200 side are connected.

  If it is determined that the focus lens 102 is attached, the process proceeds to S102. If it is determined that the focus lens 102 is not attached, it is determined that the still image shooting mode is set, and the focus lens 102 is set by the control shown in FIG. To move. In S102, lens information such as the focal length of the lens device 100, the F number, information of the diaphragm device 103 (aperture diameter), and focus information (position of the focus lens 102) is acquired.

  In S103, the control method in focus drive is changed. When the lens device 100 is zoom-driven by the adapter 200, basically only moving image shooting is performed, so the control is changed to the optimum control for moving image shooting. Details are as described below.

  In S104, it is determined whether or not there is a zoom drive command from the adapter 200. When the zoom drive command is transmitted to the lens device side or the camera body side, the process proceeds to S105 and S107, and when there is no drive command, the process ends. The zoom drive command mentioned here is a command including information indicating that the zoom switch 208 has moved, and information regarding the amount of movement of the zoom lens 105 obtained from the operation result of the zoom switch 208.

  In step S105, the focus drive amount (movement amount of the focus lens 102) is calculated by the lens CPU 110 or the camera CPU 302 from the zoom drive command transmitted from the adapter 200. Then, in step S106, a drive command based on the focus drive amount calculated in step S105 is transmitted to the focus drive source 106. By moving the focus lens 102 in accordance with the variable power lens 105 in this way, it becomes possible to correct the focus shift due to the change in the focal length.

  Further, simultaneously with the processing of S105 and S106, the adapter CPU 201 transmits a zoom driving command to the zoom driving motor 202 in S107, and the lens device 100 is zoom driven by the adapter 200. In S108, it is confirmed that there is no zoom drive command from the adapter 200. If there is no drive command, the process proceeds to the end. If a drive command is received from the adapter 200, the process returns to S105 and S107 to perform zoom drive and focus drive again.

(Control of the focus lens when shooting still images and movies)
The change in the focus drive control method in S103 will be described in detail.

  When shooting a still image, the focus followability with respect to the subject during zooming is emphasized, and in order to move the focus lens 102 quickly to shorten the focusing time, the focus lens 102 is controlled by the control shown in FIG. To accelerate and decelerate. This is a control called computer zoom (CZ) control in which the focus lens 102 moves in accordance with the variable magnification lens 105 to maintain the in-focus state even when the magnification is changed.

  In the CZ control, in order to shorten the focusing time at the time of capturing a still image, the focus lens 102 first accelerates and moves so as to rapidly decelerate when approaching the target position, as shown in FIG. Here, in order to allow the focus lens 102 to move smoothly, there is a gap between the guide hole provided in the focus lens barrel holding the focus lens and the guide bar inserted in this guide hole. Is provided. Therefore, when the above-described acceleration and deceleration are performed, a collision sound generated when the focus lens barrel moves by the gap between the focus bar and the guide bar may increase.

  More specifically, for example, the guide hole and the guide bar are provided on the focus drive source 106 side, and the U-shaped groove and another guide bar inserted in the U-shaped groove are provided on the opposite side. Consider a configuration. When the focus lens 102 is moved in the optical axis direction in the case of such a configuration, first, the focus lens barrel tilts obliquely to fill the above-mentioned gap and then moves in the optical axis direction. For this reason, when abrupt acceleration or deceleration is performed, the noise that the guide hole collides with the guide bar when the focus lens barrel tilts obliquely may increase.

  Even if such noise is generated during still image shooting, it does not cause a problem because it is not recorded, but it is not preferable that such noise is recorded during moving image shooting. Further, in addition to suppressing the generation of noise during moving image shooting, it is preferable that the focusing time remains short during still image shooting.

  In view of this, in this embodiment, the control shown in FIG. 3A is performed during still image shooting, and the focus lens 102 is controlled to move at a constant speed as shown in FIG. 3B during moving image shooting.

  When the zoom ring 130 is manually rotated to perform zooming, the lens device 100 does not know when the operation of the zoom ring 130 is completed, in other words, the movement target position of the variable power lens 105. Since the focus lens 102 moves in accordance with the variable power lens 105 as described above, the target position of movement of the focus lens 102 cannot be known unless the target position of movement of the variable lens 105 is known. Therefore, conventionally, the focus lens 102 is controlled so as to accelerate when the rotation of the zoom ring 130 is detected and decelerate and stop when the rotation of the zoom ring 130 is completed.

  On the other hand, in the lens apparatus 100 to which the adapter 200 can be attached as in the present embodiment, the operation result of the zoom switch 208, in other words, information regarding the moving target position of the variable power lens 105 is transmitted from the adapter 200 to the lens apparatus 100. It is possible to send. Therefore, the lens device 100 knows the movement target position of the focus lens 102 based on the information about the movement target position of the variable power lens 105, and moves the focus lens 102 toward the movement target position at a constant speed during moving image shooting. It becomes possible. As a result, it is possible to suppress the above-mentioned noise generation. Furthermore, since the focus lens 102 moves at a constant speed, it is possible to smoothly change the in-focus state as an image expression.

  As described above, the lens apparatus 100 according to the present embodiment can shorten the focusing time by performing the control for accelerating and decelerating the focus lens 102 as illustrated in FIG. Is. In addition, noise can be suppressed by controlling the focus lens 102 to move at a constant speed as shown in FIG. 3B during moving image shooting.

  In other words, when the driving force from the gear unit 203 and the output gear 204 is not transmitted to the zoom ring 130, the focus drive source 106 is subjected to the first control shown in FIG. Then, when the driving force from the gear unit 203 and the output gear 204 is transmitted to the zoom ring 130, the focus control source 106 is subjected to the second control shown in FIG. 3B.

  The first control mentioned here is a control for performing rapid acceleration and deceleration as described above, and the second control is a control with a smaller acceleration than the first control. More specifically, the second control has a smaller acceleration value in the accelerating state and the larger acceleration value in the decelerating state (the acceleration is negative) than the first control. In other words, the second control controls the focus drive source 106 so that the absolute value of acceleration is smaller than that of the first control.

  In other words, in the second control, the number of times the focus lens 102 is switched from acceleration to deceleration is smaller (frequency of acceleration / deceleration is lower) than in the case of the first control. Furthermore, in other words, in the second control, the time period during which the focus lens 102 moves at a constant speed is longer than that in the first control.

The lens device 100 according to the present embodiment determines whether to shoot a still image or a moving image as follows. That is, the case where the driving force from the zoom drive motor 202 adapter 200 in the electric mode is attached to the lens apparatus 100 is in a state transmitted to the zoom ring 130, it is determined that the moving image shooting mode. On the other hand, when the adapter 200 is not attached to the lens device 100, a case where the drive force from the zoom drive motor 202 is not transmitted to the zoom ring 130 because the adapter 200 is attached but is in the manual mode is a still image. Judge as the shooting mode.

Of course, the lens CPU 110 may determine whether to perform still image shooting or moving image shooting based on the information regarding the selection result of the mode selection unit 306 from the camera body 300. That is, whether the dynamic image capturing mode selected by the mode selecting means 306, depending on whether the still image shooting mode is selected, may change the control over the movement of the focusing lens 102.

[Second Embodiment]
The drive control of the diaphragm device 103 as the second embodiment of the present invention will be described with reference to FIGS.

  FIG. 4 is a flowchart relating to driving of the diaphragm device 103 during zooming in this embodiment. S201 and S202 are the same as S101 and S102 in the first embodiment described above. In S203, the control method for diaphragm drive is changed. When the lens device 100 is zoom-driven by the adapter 200, basically only moving image shooting is performed, so the control is changed to the optimum control for moving image shooting. Details are as described below. S204 is the same as S104 in the first embodiment described above.

  In S205, the camera CPU 302 calculates the exposure correction amount, and drives the aperture drive source 107 by the control method selected in S203 in accordance with the exposure correction value calculated in S205 in S206. Further, at the same time as the processing of S205 and S206, in S207, a zoom driving command is transmitted to the zoom driving motor 202 of the adapter 200, and the lens apparatus 100 is zoom driven by the adapter 200. In S207, it is confirmed that there is no zoom drive command from the adapter 200, and if there is no drive command, the process proceeds to the end. If a drive command is received from the adapter 200, the process returns to S205 and S207, and zoom drive and diaphragm device drive are performed again. To do.

(Control of aperture device when shooting still images and movies)
Next, the change of the control method of the diaphragm drive in S203 will be described in detail using FIG. When shooting still images, the focus is on the continuous shooting speed and the shutter speed from focusing until the shutter is released. For this reason, it is preferable to control the diaphragm device 103 using the rectangular wave drive as shown by the solid line in FIG. 5 in order to move the diaphragm device 103 quickly during still image shooting. However, in the rectangular wave drive, since the diaphragm device 103 moves quickly, noise such as the sound of the diaphragm blades rubbing with each other may occur. Therefore, it is not preferable to use the rectangular wave drive during moving image shooting.

  In view of this, in the present embodiment, the diaphragm device 103 is driven by the micro-step drive shown by the dotted line in FIG. 5 when shooting a moving image, thereby reducing the noise caused by the rubbing of the diaphragm blades. Then, at the time of shooting a still image, the continuous shooting speed and the shutter speed are maintained as described above by driving the diaphragm device 103 by the rectangular wave drive shown by the solid line in FIG.

  In this way, by controlling the diaphragm device 103 as shown in this embodiment in addition to the above-described first embodiment, it is possible to further reduce noise during moving image shooting.

[Third Embodiment]
The drive control of the image blur correction lens 104 as the third embodiment of the present invention will be described with reference to FIGS. 6 to 8.

  FIG. 6 is a flowchart regarding driving of the image blur correction lens 104 during zooming in this embodiment. S301 and S302 are the same as S101 and S102 in the first embodiment described above. In S303, the control method for driving the image blur correction lens 104 is changed. When the lens device 100 is zoom-driven by the adapter 200, basically only moving image shooting is performed, so the control is changed to the optimum control for moving image shooting. Details are as described below. S304 is the same as S104 in the first embodiment described above.

  In step S305, the lens CPU 110 or the camera CPU 302 calculates the blur correction amount based on the blur amount acquired by the gyro sensor 111, and the blur correction amount calculated in step S305 is transmitted to the image blur correction driving source 108 in step S306. Further, at the same time as the processing of S305 and S306, in S307, a zoom driving command is transmitted to the zoom driving motor 202 of the adapter 200, and the lens apparatus 100 is zoom driven by the adapter. In S307, it is confirmed that there is no zoom drive command from the adapter 200. If there is no drive command, the process proceeds to S308 end. If a drive command is received from the adapter 200, the process returns to S305 and S307, and the zoom drive and image blur correction lens are performed again. Drive.

(Control of image blur correction lens when shooting still images and movies)
Next, the change in the control method of the diaphragm drive in S303 will be described in detail with reference to FIGS. 7 and 8.

  When the blur amount is small as shown in FIG. 7A, in other words, when the image blur correction lens 104 can be driven within the correctable range (within a predetermined drive range) shown by the solid line in FIG. 8, the image blur can be corrected. , As shown in FIG. 7B, it is possible to take a picture with little image blur. On the other hand, when the blur amount is large as shown in FIG. 7C, in other words, when the image blur cannot be corrected even when the image blur correction lens 104 reaches the drive limit shown in FIG. 8, the image blur cannot be sufficiently corrected. As a result, during shooting, the shooting area may suddenly shift from the state shown in FIG. 7B as shown in FIG. 7D.

  Therefore, in the present embodiment, during moving image shooting, as shown in FIG. 8, the image blur correction lens 104 is driven at the first speed in the first range of the correctable range. Then, when it exceeds the first range, the image blur correction driving source 108 is controlled so as to drive at the second speed which is slower than the first speed. That is, even within the drivable range of the image blur correction lens 104, the deceleration point is intentionally set in the middle to slow down the driving speed, thereby suppressing the sudden shift of the photographing area as described above. It becomes possible. On the other hand, by driving the image blur correction lens 104 at the first speed in the entire correctable range during still image shooting, it is possible to quickly suppress image blur during still image shooting.

  As described above, by performing the control shown in the present embodiment in addition to the above-described first embodiment, it is possible to suppress the abrupt shift of the shooting area during shooting in addition to the above-described noise reduction.

[Other Embodiments]
In the optical device shown in each of the above-described embodiments, operation information including information about the amount of operation (operation amount) of the zoom switch 208 as the first operation means and information about the time of operation (operation time). Has been illustrated as an example of the configuration for transmitting to. Here, the lens CPU 110 may calculate the information regarding the target position of the focus lens 102 based on the information regarding the operation amount and the information regarding the operation time, or the adapter CPU 201 may calculate the information regarding the target position and transmit it to the lens CPU 110. You may.

  Further, in the optical device shown in each of the above-described embodiments, the configuration in which the focus lens 102 is closer to the subject side than the variable power lens 105 has been illustrated, but the present invention is not limited to such a configuration. For example, a so-called rear focus type optical device in which the variable power lens 105 is closer to the subject than the focus lens 102 may be used.

  Further, in the optical device shown in each of the above-described embodiments, the configuration including the gear portion 131 that comes into contact with the output gear 204 of the adapter 200 is illustrated, but the present invention is not limited to such a configuration. For example, the lens device 100 may be configured to include a rubber roller instead of the gear portion 131, and the adapter 200 may be configured to include a rubber roller instead of the output gear 204.

  Further, the fixed lens 101, the focus lens 102, the image blur correction lens 104, and the focus lens 105 in the optical device shown in each of the above-described embodiments do not necessarily have to be single lenses. For example, it may be a lens unit including a plurality of lenses that move collectively during zooming or focusing, or may be a lens unit including a single lens.

  Further, the optical device shown in each of the above-described embodiments may have the following configuration. The variable power lens 105 is provided with a plurality of cam followers (convex portions) (not shown), and the lens device 100 is provided with a cam barrel (cylindrical member) provided with the cam followers (engaging portions) with which the cam followers engage. ing. By rotating the zoom ring 130 electrically or manually, the cam barrel rotates to move the variable power lens 105 in the optical axis direction, and the focus lens 102 also moves in the optical axis direction.

  At the same time as such a movement or after such a movement, the focus driving source 106 is used to move the focus lens 102 by the first control shown in FIG. 3A or the second control shown in FIG. 3B. Move it further.

100 lens device (optical equipment)
102 Focus lens (focus lens unit)
105 Magnifying lens (magnifying lens unit)
106 focus drive source (second drive means)
110 lens CPU (control means)
130 Zoom ring (second operation means)
200 adapter (lens drive device)
202 Zoom drive motor (drive source)

Claims (12)

Lens drive including first operating means, first driving means that is driven based on the operation of the first operating means, and transmitting means that transmits operation information based on the operation of the first operating means An optical device to which the device can be attached,
A focus lens unit that moves for focusing,
A variable power lens unit that moves for variable power,
Second operating means for moving the variable power lens unit in the optical axis direction,
Second driving means for moving the focus lens unit in the optical axis direction,
When the driving force from the first driving means is not transmitted to the second operating means, the first control is performed on the second driving means, and the driving force from the first driving means is In a state of being transmitted to the second operation means, the control means for performing the second control, in which the absolute value of the acceleration is smaller than that of the first control, for the second drive means based on the operation information from the transmission means. an optical apparatus characterized by the Turkey provided with, the. Said control means, in the state where the driving force is transmitted to the second operating means from the first driving means, wherein characterized that you calculating a target position of the focus lens unit based on the operation information Item 1. The optical device according to Item 1. The operation information, optical apparatus according to claim 1 or 2, characterized in it to contain the information about the operation of the first operating means, and a time during which the first operating means is operated. A diaphragm device,
A third driving unit that changes the aperture diameter of the diaphragm device;
The control means controls the third drive means such that the third drive means is driven by microstep drive in a state where the driving force from the first drive means is transmitted to the second operation means. Then
In a state where the driving force from the first drive means is not transmitted to the second operation means, that you said third driving means controls the third drive means to drive a rectangular wave drive The optical device according to any one of claims 1 to 3, which is characterized. The optical apparatus according to claim 4 wherein the third driving means, characterized in that it is a stepping motor. A shake correction lens unit that suppresses the influence of the shake of the optical device by moving in a direction orthogonal to the optical axis of the optical device within a predetermined drive range,
Fourth drive means for moving the blur correction lens unit in a direction orthogonal to the optical axis,
In a state where the driving force from the first driving unit is transmitted to the second operating unit, the control unit causes the blur correction lens unit to move the light at the first speed in the first range of the driving range. The fourth drive means is controlled so as to move in a direction orthogonal to the axis and to move at a second speed lower than the first speed when exceeding the first range,
In a state where the driving force from the first driving means is not transmitted to the second operating means, the fourth driving means moves the blur correction lens unit at the first speed in the entire driving range. optical apparatus according to any one of claims 1 to 5, characterized that you controlled. The second operating means is a rotating member for rotating the tubular member provided with the engaging portion with which the convex portion provided in the variable power lens unit is engaged, around the optical axis direction. ,
Said second operation means and provided integrally, optics according to any one of claims 1 to 6, characterized that you driven member is provided for receiving a driving force from the lens driving device machine. It said second drive means is an optical device according to any one of claims 1 to 7, characterized in that it is an ultrasonic motor or a stepping motor. The optics, that it is a removable lens apparatus to the camera body comprising an imaging element, and a selectable mode selection means a moving image shooting mode and a still image shooting mode for photoelectrically converting light from said optical instrument The optical device according to claim 1, wherein the optical device is an optical device. The optical apparatus is further provided with an imaging device and a camera body, the comprising an imaging element, and a selectable mode selection means a moving image shooting mode and a still image shooting mode for photoelectrically converting light from said optical device this The optical device according to claim 1, wherein: Wherein, when the moving image photographing mode is selected by said mode selecting means performs the first control for the second driving means, the still image shooting mode by said mode selection means the optical apparatus according to claim 9 or 10 when it is selected, characterized that you perform the second control to the second drive means. An optical device according to any one of claims 1 to 11,
A camera system comprising: the lens driving device that is attachable to and detachable from the optical device.

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