Optical device and imaging device

Abstract

To provide an optical device and an imaging device that have achieved prevention of image quality deterioration due to noise from a driving section and a reduction in the size of the devices.SOLUTION: A lens device 100 has: a second group lens L2 and a fourth group lens L4 that are supported movably in an optical axis direction; an oscillating wave motor unit 31 for driving the second group lens L2; at least one VCM 32 for driving the fourth group lens L4; a stationary barrel 18 that supports the oscillating wave motor unit 31 and the VCM 32; a step-up transformer 50c that forms the oscillating wave motor unit 31; an inductor 50d that forms the VCM 32; and a flexible printed board 51 on which the step-up transformer 50c and the inductor 50d are mounted. At least one of the oscillating wave motor unit 31 and the VCM 32 overlaps at least one of the step-up transformer 50c and the inductor 50d when seen from the optical axis direction.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an optical device and an imaging device including the same. [Background technology]

[0002] In lens devices such as digital cameras and video cameras, there is known a technique for moving multiple lens groups during focus adjustment in order to shorten the minimum shooting distance, improve close-up image quality, etc. As a technique for moving multiple lens groups using separate driving means, there is known a technique for moving multiple lens groups using multiple actuators such as ultrasonic motors and VCMs (voice coil motors).

[0003] Patent Document 1 discloses a lens barrel having a configuration in which a plurality of lens groups are moved by separate driving means. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2023-130624 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the configuration disclosed in Patent Document 1 does not take into consideration the arrangement of multiple driving means using piezoelectric elements and image quality degradation due to noise generated by the driving means. In other words, it is necessary to consider both measures to deal with noise generated by the multiple actuators and the arrangement of the multiple actuators and flexible substrates.

[0006] An object of the present invention is to provide an optical device and an imaging device that achieves suppression of image quality degradation due to noise from a driving unit and downsizing of the device. [Means for solving the problem]

[0007] The present invention is an optical device having a first optical element and a second optical element supported movably in the optical axis direction, a first driving unit for driving the first optical element, at least one second driving unit for driving the second optical element, a support member supporting the first driving unit and the second driving unit, a first circuit component constituting the first driving unit, a second circuit component constituting the second driving unit, and a circuit board on which the first circuit component and the second circuit component are mounted, wherein at least one of the first driving unit and the second driving unit overlaps with at least one of the first circuit component and the second circuit component when viewed from the optical axis direction. [Effects of the Invention]

[0008] According to the present invention, it is possible to provide an optical device and an imaging device that suppress deterioration of image quality due to noise from the driving unit and achieve miniaturization of the device. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 3 is a cross-sectional view of the camera system 300. [Figure 2] FIG. 3 is a block diagram of a camera system 300. [Figure 3] FIG. 2 is a side view of the main part of the lens device 100. [Figure 4] FIG. 2 is a rear view of the main part of the lens device 100 as seen from the image side. [Figure 5] FIG. 2 is a diagram showing the arrangement of components of the lens device 100 as seen from the subject side. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. A camera system (imaging device) 300 according to the embodiment of the present invention will be described with reference to Fig. 1 and Fig. 2. Fig. 1 is a cross-sectional view of a lens device 100 (optical device) and a camera body 200 (imaging device main body) that constitute the camera system 300. The lens device 100 is an interchangeable lens that can be attached to and detached from the camera body 200. In this case, the optical axis direction of the lens device 100 is defined as the X axis, the pitch direction as the Y axis, and the yaw direction as the Z axis.

[0011] The camera body 200 is configured with an image sensor 201, a finder 202, a control unit 203, a display unit 204, etc. The image sensor 201 has a CCD sensor or a CMOS sensor, and performs photoelectric conversion on an optical image (subject image) formed via an imaging optical system 10 (described below) to output image data. By looking into the finder 202, it is possible to check the captured image and input line-of-sight information. The control unit 203 has a camera CPU 210, and controls the operation of each unit of the camera system 300. The display unit 204 has a touch panel function that can display captured images and change various settings of the camera system 300.

[0012] The lens device 100 has an imaging optical system 10. The imaging optical system 10 is composed of a first lens group L1, a second lens group L2 (first optical element), a third lens group L3, a fourth lens group L4 (second optical element), and a fifth lens group L5. The imaging optical system 10, which is made up of these lenses, has an optical axis OA. The first lens group L1, the second lens group L2, the third lens group L3, the fourth lens group L4, and the fifth lens group L5 are held by a first lens group holding frame 11, a second lens group holding frame 12, a third lens group holding frame 13, a fourth lens group holding frame 14, and a fifth lens group holding frame 15, respectively.

[0013] The imaging optical system 10 further includes an electric diaphragm unit 16. The electric diaphragm unit 16 adjusts the amount of light that passes through the lens apparatus 100 and reaches the camera body 200. A drive signal from an electric circuit board 17 drives an diaphragm actuator of the electric diaphragm unit 16, and a group of diaphragm blades (not shown) moves in the opening / closing direction, thereby changing the diaphragm opening diameter.

[0014] The lens device 100 is a so-called fixed focal length lens without a variable magnification function. The second lens group L2 and the fourth lens group L4, which are supported so as to be movable in the optical axis direction, form part of the imaging optical system 10. During focus adjustment (focusing), the second lens group L2 and the fourth lens group L4 receive a driving force from an actuator (described later) and move in the optical axis direction to perform focus adjustment.

[0015] The first lens group holding frame 11, the third lens group holding frame 13, and the fifth lens group holding frame 15 are fixed to the fixed barrel 18 (support member) with screws etc. Furthermore, a mount member 19 that is detachable from the camera body 200 is fixed to the fixed barrel 18 with screws, and an electric circuit board 17 is fixed thereto.

[0016] An electric circuit for controlling the operation of the lens device 100 and for performing various calculations is configured on the electric circuit board 17. The fixed barrel 18 is immovable during focus adjustment. An electric diaphragm unit 16 is fixed to the third lens group holding frame 13 with screws.

[0017] The filter frame 20 has the function of supporting accessories such as a hood or filter. The control ring 21 is rotatably supported in a fixed position by support frames 22 and 23. Any function assigned to the camera body 200 can be operated by rotating the control ring 21. The focus ring 24 is rotatably supported in a fixed position by support frames 23 and 25. By rotating the focus ring 24, the photographer can manually adjust the focus. The iris ring 26 is rotatably supported in a fixed position by an exterior ring 27 and support frame 28. By rotating the iris ring 26, it is possible to more intuitively control adjustments of bokeh and exposure.

[0018] FIG. 2 is a block diagram showing the configuration of a camera system 300 composed of a lens apparatus 100 and a camera body 200. The camera CPU 210 is composed of a microcomputer and controls the operation of each component within the camera body 200. When the camera body 200 is attached to the lens apparatus 100, the camera CPU 210 communicates with the lens CPU 110 provided within the lens apparatus 100 via electrical contacts 101 and 205. Information transmitted from the camera CPU 210 to the lens CPU 110 includes information such as drive amount information for the second lens group L2, which is one of the focus lenses. Information transmitted from the lens CPU 110 to the camera CPU 210 includes information such as imaging magnification. The electrical contacts 101 and 205 also include a contact for supplying power from the camera body 200 to the lens apparatus 100. The power switch 211 is a switch that can be operated by the photographer and is operated to start up the camera CPU 210 and to start supplying power to actuators, sensors, and other components within the camera system.

[0019] First, the control of the camera body 200 will be described. The release switch 212 is a switch that can be operated by the photographer and includes a first-stroke switch and a second-stroke switch. A signal from the release switch 212 is input to the camera CPU 210. The camera CPU 210 enters a shooting preparation state in response to an ON signal input from the first-stroke switch. In the shooting preparation state, the photometry unit 213 measures the brightness of the subject, and the focus detection unit 214 detects the focus. Based on the measurement results, the camera CPU 210 calculates the aperture value of the motorized aperture unit 16 implemented in the lens apparatus 100 and the exposure amount (shutter time) of the image sensor 201. Furthermore, based on focus information of the imaging optical system 10 obtained by the focus detection unit 214 of the camera CPU 210, the camera CPU 210 determines the drive amounts of the second lens group L2 and the fourth lens group L4, which are focus lenses, to achieve a focused state on the subject. Information on the drive amounts (focus lens drive amount information) is transmitted to the lens CPU 110. The lens CPU 110 controls the operation of each component of the lens apparatus 100.

[0020] When an ON signal is input from the second stroke switch, the camera CPU 210 sends an aperture drive command to the lens CPU 110, causing the motorized aperture unit 16 to set the calculated aperture value. The camera CPU 210 also sends an exposure start command to the exposure section 215, causing it to open a shutter (not shown), causing the imaging section 216, including the imaging element 201, to perform an exposure operation for the subject image. The imaging signal from the imaging section 216 (imaging element 201) is converted into a digital signal by a signal processing section within the camera CPU 210, and then subjected to various correction processes before being output as image signal data. The image signal data is written and stored in an image recording section 217, such as a semiconductor memory, a flash memory, or a recording medium, such as a magnetic disk or optical disk.

[0021] Next, the control of the lens apparatus 100 will be described. An MF operation amount detection unit 111 detects the rotation of the focus ring 24 using a sensor (not shown). An electromagnetic diaphragm drive unit 112 sets the electric diaphragm unit 16 to an opening state corresponding to an aperture value specified by the lens CPU 110 upon receiving an diaphragm drive command from the camera CPU 210. A focus drive unit 113 drives the focus lens using a focus drive mechanism (described later) in accordance with focus drive amount information transmitted from the camera CPU 210.

[0022] Note that camera system 300 is configured with camera body 200 having image sensor 201 and lens apparatus 100 detachably attached to camera body 200, but is not limited to this. An image pickup device in which camera body 200 and lens apparatus 100 are integrally configured may also be used, or camera body 200 may be a single-lens reflex camera having a quick-return mirror.

[0023] The configuration of the focus drive mechanism of lens device 100 according to an embodiment of the present invention will be described in detail with reference to Fig. 1 and Figs. 3 to 5. Fig. 3 is a side view of the main parts of lens device 100, Fig. 4 is a rear view of the main parts of lens device 100 as seen from the image side, and Fig. 5 is a diagram showing the arrangement of components of lens device 100 as seen from the subject side.

[0024] The lens device 100 has a first actuator that moves the second lens group L2 in the optical axis direction during focus adjustment, and a second actuator that moves the fourth lens group L4 in the optical axis direction.

[0025] The first actuator has a linear vibration wave motor (hereinafter referred to as the vibration wave motor unit 31 or the first driving unit), which is a type of ultrasonic motor, as a driving unit for moving the second lens group L2 in the optical axis direction. A fixed portion (not shown) of the vibration wave motor unit 31 is fixed to the fixed barrel 18 with screws, and the vibration wave motor unit 31 is supported on the fixed barrel 18 so that a movable element (not shown) of the vibration wave motor unit 31 is movable. The vibration wave motor unit 31 is connected to the second lens group holding frame 12 via a connecting member (not shown). The second lens group holding frame 12 has an engaging portion that engages with a second lens group guide bar 41 (guide member) that extends in the optical axis direction. Both ends of the second lens group guide bar 41 are held by the fixed barrel 18 and the third lens group holding frame 13. The second lens group guide bar 41 supports the second lens group holding frame 12 so that it can move linearly in the optical axis direction, and it can move in the optical axis direction in conjunction with the movement of the movable element of the vibration wave motor unit 31.

[0026] The second actuator has a VCM 32 (voice coil motor, second drive unit) as a drive unit that moves the fourth lens group L4 in the optical axis direction. At least one VCM 32 is provided, but in this embodiment, two VCMs 32 are arranged opposite each other across the optical axis OA. The VCM 32 is composed of a coil 32a, a magnet 32b, a pole yoke 32c, a back yoke 32d, and a side yoke 32e. The coil 32a is fixed to a fourth lens group support frame 29 that supports the fourth lens group support frame 14, and the pole yoke 32c is fixed by the fixed barrel 18 and the fifth lens group support frame 15. In other words, the VCM 32 is supported by the fixed barrel 18 so that the coil 32a, which is the movable part of the VCM 32, can move. The magnet 32b is attracted to and fixed to the side yoke 32e, and the back yoke 32d and the side yoke 32e are attracted and held by the attractive force of the magnet 32b, and one of the opposing back yokes 32d is fixed to the fixed barrel 18. A flexible printed circuit board (hereinafter referred to as VCM flex) (not shown) to which a coil 32a is soldered is fixed to the fourth group support frame 29. The fourth group support frame 29 has a sliding portion with a fourth group guide bar 42 extending in the optical axis direction. Both ends of the fourth group guide bar 42 are held by the fixed barrel 18 and the fifth group lens holding frame 15. When current is applied to the coil 32a, a force is generated that moves the fourth group support frame 29 in the optical axis direction, and the fourth group guide bar 42 supports the fourth group support frame 29 so that it can move linearly in the optical axis direction.

[0027] A flexible printed circuit board unit (hereinafter referred to as drive flex unit 50) is fixed to the fixed barrel 18. The drive flex unit 50 is composed of a flexible printed circuit board 51 (circuit board) and various components mounted on the flexible printed circuit board 51. A terminal portion 51a of the flexible printed circuit board 51 is inserted into a connector mounted on the electric circuit board 17. The drive flex unit 50 is mounted with connectors 50a and 50b into which terminal portions of the flexible printed circuit boards in the electric diaphragm unit 16 and the oscillatory wave motor unit 31 are inserted, and a connector (not shown) into which a terminal portion of the VCM flex is inserted.

[0028] A step-up transformer 50c (first circuit component) is also mounted on the drive flexible unit 50. The step-up transformer 50c is a circuit component that outputs a voltage higher than the voltage supplied to the lens CPU 110 when the oscillatory wave motor unit 31 is driven, and is part of a circuit that constitutes the power supply for the focus drive unit 113. In other words, the step-up transformer 50c is a circuit component that steps up the voltage supplied from a battery or the like and applies a predetermined AC voltage to the oscillatory wave motor unit 31, and is a circuit component that constitutes the power supply for the oscillatory wave motor unit 31.

[0029] Furthermore, the driving flexible unit 50 is equipped with an inductor 50d (second circuit component) and a capacitor 50e. These are circuit components for reducing specific components of a PWM (pulse width modulation) control signal when the VCM 32 is driven. That is, the inductor 50d is a circuit component that constitutes the power supply for the VCM 32. The VCM 32 is PWM-driven for its convenience in microcomputer driving and low power consumption, and the inductor 50d includes circuit components such as a low-pass filter to reduce specific components of the PWM control signal. The flexible printed circuit board 51 has a wiring section 51c that connects the terminal section 51a to a mounting section 51b on which the step-up transformer 50c, the inductor 50d, the capacitor 50e, etc. are mounted. Signal lines for various actuators, etc., are wired to the wiring section 51c.

[0030] When power is supplied to the step-up transformer 50c and the inductor 50d via the flexible printed circuit board 51, magnetic flux is generated in the direction of the winding axis of the coil provided therein. When the image sensor 201, which uses a solid-state image sensor such as a CMOS, generates and outputs an image signal, fluctuations in this magnetic flux can be superimposed on the image signal as magnetic noise, degrading image quality. For example, if magnetic field fluctuations generated when driving the optical elements of the imaging device reach the solid-state image sensor and generate periodic induced electromotive forces in the horizontal image signal readout circuit, horizontal stripe noise can be superimposed on the image signal. Leakage magnetic flux generated from coils included in the step-up transformer 50c, the inductor 50d, etc. can cause magnetic noise, which can be superimposed on the image signal and degrade image quality. More specifically, when magnetic noise reaches the image sensor 201, a magnetic field that changes the pixel charge information signal line at a high frequency penetrates the signal line. This generates magnetism due to electromagnetic induction in the signal line, resulting in noise in the pixel charge information signal line.

[0031] Next, the positional relationship between the vibration wave motor unit 31, the VCM 32, and the drive flexible unit 50 will be described. As shown in Fig. 3, the vibration wave motor unit 31 is arranged closer to the subject (object side) than the VCM 32. Also, as shown in Fig. 5, the vibration wave motor unit 31 is arranged at a different phase (angle) around the optical axis direction from the two VCMs 32 arranged opposite each other when viewed from the optical axis direction, thereby shortening the length of the lens device 100 in the optical axis direction.

[0032] In order to reduce the effects of magnetic noise generated from the step-up transformer 50c and inductor 50d described above, it is preferable to place the step-up transformer 50c and inductor 50d as close to the subject as possible within the lens device 100. Therefore, in this embodiment, the step-up transformer 50c and inductor 50d are placed closer to the subject than the VCM 32, and are configured to be as far away as possible from the image sensor 201. This makes it possible to suppress image quality degradation caused by noise generated when the lens groups move.

[0033] Furthermore, if the step-up transformer 50c and the inductor 50d can be laid out so that they do not protrude radially beyond the other components fixed to the fixed barrel 18 when the drive flexible unit 50 is fixed to the fixed barrel 18, the lens device 100 can be made smaller in the radial direction. That is, at least one of the oscillatory wave motor unit 31 and the VCM 32 can be arranged so that they overlap with at least one of the step-up transformer 50c and the inductor 50d when viewed from the optical axis direction. In this embodiment, the VCM 32 is arranged at a position where the step-up transformer 50c and the inductor 50d overlap when viewed from the optical axis direction. As shown in FIG. 5 , the step-up transformer 50c and the inductor 50d are contained within the width of the VCM 32 when viewed from the optical axis direction. Therefore, the radial size of the lens device 100 is not affected by the outer shapes of the step-up transformer 50c and the inductor 50d, allowing the lens device 100 to be made smaller.

[0034] 5, the oscillatory wave motor unit 31 is disposed at different distances A and B in the circumferential direction from the two VCMs 32 when viewed from the optical axis direction. Distance A is shorter than distance B, and the wiring portion 51c of the flexible printed circuit board 51 passes along the side of distance A where the distance between the oscillatory wave motor unit 31 and the VCMs 32 in the circumferential direction is shorter. The wiring portion 51c extends in the optical axis direction. This allows the length of the wiring portion 51c to be made as short as possible, thereby reducing the resistance of various actuators, suppressing power consumption, and reducing noise emitted from signal lines.

[0035] Next, the positional relationship between the oscillatory wave motor unit 31 and the driving flexible unit 50 will be described. At least one of the step-up transformer 50c and the inductor 50d of the driving flexible unit 50 may be arranged to overlap with the oscillatory wave motor unit 31 in the optical axis direction. In this embodiment, the oscillatory wave motor unit 31 and the step-up transformer 50c and the inductor 50d of the driving flexible unit 50 are arranged in positions that overlap in the direction perpendicular to the optical axis OA. This shortens the length of the flexible printed circuit board 51 in the optical axis direction and the lens device 100 in the optical axis direction.

[0036] The second guide bar 41, the step-up transformer 50c, and the inductor 50d are arranged in overlapping positions in the optical axis direction. Furthermore, the second guide bar 41 is arranged in a different phase (angle α) in the circumferential direction relative to the step-up transformer 50c and the inductor 50d when viewed from the optical axis direction. Arranging the second guide bar 41, the step-up transformer 50c, and the inductor 50d in overlapping positions in the optical axis direction enables the lens device 100 to be made smaller in the optical axis direction, and arranging them in different phases when viewed from the optical axis direction enables the lens device 100 to be made smaller in the radial direction.

[0037] Finally, the positional relationship between the imaging element 201 and the drive flexible unit 50 will be described. As shown in FIG. 5, the imaging element 201 has a short side 201a in the Y-axis direction and a long side 201b in the Z-axis direction when viewed from the optical axis direction, and has a substantially rectangular shape with the long side 201b being longer than the short side 201a. Meanwhile, in this embodiment, the step-up transformer 50c and the inductor 50d are arranged substantially along the Y-axis, and are arranged on the side of the imaging element 201 opposite the long side 201b. This allows the imaging element 201 to be spaced apart from the step-up transformer 50c and the inductor 50d when viewed from the optical axis direction, making it possible to suppress deterioration in image quality when the lens group moves.

[0038] According to this embodiment, in an optical device having a plurality of actuators for moving a plurality of lens groups, it is possible to provide an optical device and an imaging device that suppress image quality degradation due to noise from the driving unit when the lens groups move and achieves miniaturization of the device.

[0039] While the preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments and various modifications and variations are possible within the scope of the present invention. For example, although the oscillatory wave motor unit 31 is used as a drive unit for moving the second lens group L2 in the optical axis direction, two pairs of VCMs 32 may be used instead of the oscillatory wave motor unit 31.

[0040] The disclosure of this embodiment includes the following configuration. (Configuration 1) a first optical element and a second optical element supported so as to be movable in the optical axis direction; a first driving unit for driving the first optical element; at least one second driving unit for driving the second optical element; a support member that supports the first drive unit and the second drive unit; a first circuit component constituting the first driving unit; a second circuit component constituting the second driving unit; an optical device having a circuit board on which the first circuit component and the second circuit component are mounted, an optical device, characterized in that at least one of the first driving unit and the second driving unit overlaps with at least one of the first circuit component and the second circuit component when viewed from the optical axis direction; (Configuration 2) 2. The optical device according to configuration 1, wherein the first driving unit is located closer to the subject than the second driving unit. (Configuration 3) 3. The optical device according to configuration 1 or 2, wherein the first circuit component and the second circuit component are located closer to the subject than the second driving unit. (Configuration 4) 4. The optical device according to any one of configurations 1 to 3, wherein the first driving section is configured by a vibration wave motor unit. (Configuration 5) 5. The optical device according to any one of configurations 1 to 4, comprising two second driving units, each of which is disposed opposite to each other across the optical axis. (Configuration 6) the first drive unit is disposed at different distances in a circumferential direction from the two second drive units, The optical device described in configuration 5, characterized in that the wiring portion of the circuit board passes along the side where the distance between the first driving unit and the second driving unit in the circumferential direction is shorter, and the wiring portion extends in the optical axis direction. (Configuration 7) 7. The optical device according to any one of configurations 1 to 6, wherein the second driving section is configured by a voice coil motor. (Configuration 8) The optical device according to any one of configurations 1 to 7, wherein at least one of the first circuit component and the second circuit component overlaps with the first driving unit in the optical axis direction. (Configuration 9) a guide member that supports the first optical element so that the first optical element can move straight; The optical device according to any one of configurations 1 to 8, wherein the guide member is disposed at a different phase from the first circuit component and the second circuit component when viewed from the optical axis direction. (Configuration 10) An optical device described in any one of configurations 1 to 9, characterized in that the first circuit component is a step-up transformer that constitutes the power supply of the first driving unit, and the second circuit component is an inductor that constitutes the power supply of the second driving unit. (Configuration 11) 11. The optical device according to any one of configurations 1 to 10, wherein the optical device is a single-focus lens without a variable magnification function. (Configuration 12) An optical device according to any one of configurations 1 to 11; an image pickup element that photoelectrically converts an optical image formed through the optical device; the imaging element has a rectangular shape having short sides and long sides, an imaging device, wherein the first circuit component and the second circuit component are arranged on opposite sides of the long side of the imaging element; [Explanation of symbols]

[0041] 18 Fixed cylinder (support member) 31 Vibration wave motor unit (first drive unit) 32 VCM (second drive unit) 41 Second group guide bar (guide member) 50c step-up transformer (first circuit component) 50d inductor (second circuit component) 51 Flexible printed circuit board (circuit board) 51c Wiring section 100 Lens device (optical device) 201 Image sensor 201a Short side 201b Long side 300 Camera system (imaging device) A. Distance OA optical axis L2 2nd group lens (first optical element) L4 4-group lens (second optical element)

Claims

1. a first optical element and a second optical element supported so as to be movable in the optical axis direction; a first driving unit for driving the first optical element; at least one second driving unit for driving the second optical element; a support member that supports the first drive unit and the second drive unit; a first circuit component constituting the first driving unit; a second circuit component constituting the second driving unit; an optical device having a circuit board on which the first circuit component and the second circuit component are mounted, an optical device, characterized in that at least one of the first driving unit and the second driving unit overlaps with at least one of the first circuit component and the second circuit component when viewed from the optical axis direction;

2. 2. The optical device according to claim 1, wherein the first driving unit is located closer to the subject than the second driving unit.

3. 2. The optical device according to claim 1, wherein the first circuit component and the second circuit component are located closer to the subject than the second driving section.

4. 2. The optical device according to claim 1, wherein the first driving section is composed of a vibration wave motor unit.

5. 2. The optical device according to claim 1, further comprising two second driving units, the second driving units being disposed opposite each other across the optical axis.

6. the first drive unit is disposed at different distances in a circumferential direction from the two second drive units, The optical device described in claim 5, characterized in that the wiring portion of the circuit board passes along the side where the distance between the first driving portion and the second driving portion in the circumferential direction is shorter, and the wiring portion extends in the optical axis direction.

7. 2. The optical device according to claim 1, wherein the second driving unit is configured by a voice coil motor.

8. 2. The optical device according to claim 1, wherein at least one of the first circuit component and the second circuit component overlaps with the first driving section in the optical axis direction.

9. a guide member that supports the first optical element so that the first optical element can move straight; 2. The optical device according to claim 1, wherein the guide member is disposed at a different phase from the first circuit component and the second circuit component when viewed in the optical axis direction.

10. 2. The optical device according to claim 1, wherein the first circuit component is a step-up transformer that constitutes the power supply for the first driving unit, and the second circuit component is an inductor that constitutes the power supply for the second driving unit.

11. 2. The optical device according to claim 1, wherein the optical device is a single-focus lens without a variable magnification function.

12. An optical device according to any one of claims 1 to 11; an image pickup element that photoelectrically converts an optical image formed through the optical device; the imaging element has a rectangular shape having short sides and long sides, an imaging device, wherein the first circuit component and the second circuit component are arranged on opposite sides of the long side of the imaging element;

Images