JP7336214B2 - optical equipment - Google Patents

Description

The present invention relates to optical instruments.

Optical devices such as digital cameras, video cameras, and interchangeable lenses are equipped with vibration actuators (ultrasonic motors) as driving devices for various drive mechanisms in order to achieve high-speed autofocus functions and quiet operation. There is A drive power source for the vibration actuator requires a circuit component such as a step-up transformer for boosting a voltage supplied from a battery or the like and applying a predetermined AC voltage to the vibration actuator.

However, it is known that leakage magnetic flux from the step-up transformer causes magnetic noise, and when such magnetic noise is superimposed on the imaging signal, the imaging quality deteriorates. Therefore, for example, Patent Document 1 discloses a driving device in which a booster is arranged at a position different from a holding substrate on which a control unit and a switching unit are mounted, and the booster and the vibration actuator are arranged close to each other. According to this configuration, it is possible to reduce the influence of induced noise and leakage magnetic flux on the imaging element by shortening the wiring of the high-voltage drive signal flowing between the booster and the vibration actuator. .

JP 2013-179787 A

However, in the driving device described in Patent Document 1, the step-up transformer is arranged outside the cam cylinder, which is the driven body. Since the step-up transformer has a magnetic circuit such as a coil inside, it generally has a relatively large outer shape as a circuit component. Therefore, if the step-up transformer is arranged outside the cam barrel, the diameter of the entire lens barrel including the cam barrel may increase.

SUMMARY OF THE INVENTION An object of the present invention is to provide an optical device capable of suppressing an increase in size due to arrangement of circuit components.

An optical apparatus according to the present invention includes a rectilinear guide barrel, a zoom lens group guided in an optical axis direction by the rectilinear guide barrel, a lens barrel arranged on the inner peripheral side of the rectilinear guide barrel, a focus lens, a lens holding frame that holds the focus lens; a main guide member that guides a sleeve portion of the lens holding frame in an optical axis direction; a sub-guide member that stabilizes a vibration preventing portion of the lens holding frame; An optical device comprising: an actuator for driving a frame in an optical axis direction; and a flexible printed wiring board on which circuit components for supplying power to the actuator are mounted, wherein the lens holding frame, the main guide member, the sub The guide member is arranged inside the outer circumference of the lens barrel, all the constituent members of the actuator are arranged inside the outer circumference of the lens barrel, and when viewed from the optical axis direction of the focus lens, A circuit component mounted on the flexible printed wiring board arranged in a space between an inner peripheral surface of the rectilinear guide barrel and a side surface of the lens barrel is arranged on a side surface of the lens barrel, and a circuit component mounted on the lens barrel. It is arranged in a space between the inner peripheral surface of the rectilinear guide barrel and the side surface of the barrel when viewed from the optical axis direction of the lens, and is arranged in the circumferential direction of the barrel when viewed from the optical axis direction of the focus lens. The actuator is closer to the main guide member than the sub-guide member, the circuit component is closer to the sub-guide member than the main guide member, and when viewed from the optical axis direction of the focus lens, the rectilinear guide cylinder The sub-guide member , the circuit component, the actuator, and the main guide member are arranged in this order along the inner peripheral surface of the lens barrel in the circumferential direction of the lens barrel.

According to the present invention, it is possible to provide an optical device that suppresses an increase in size due to arrangement of circuit components.

1 is an external perspective view of a digital single-lens reflex camera according to an embodiment of the present invention; FIG. 2 is a block diagram showing electrical and optical configurations of a camera body and an interchangeable lens; FIG. 1 is a cross-sectional view showing a schematic configuration of a digital single-lens reflex camera with an interchangeable lens retracted; FIG. 1 is a cross-sectional view showing a schematic configuration of a digital single-lens reflex camera with an interchangeable lens extended; FIG. 4 is an exploded perspective view of a focus group unit arranged in the interchangeable lens; FIG. 4 is a side view of the focus group unit; FIG. FIG. 4 is a cross-sectional view showing a state in which the focus group is arranged at the end of the movement range; 3 is a cross-sectional view of the interchangeable lens on a plane perpendicular to the optical axis; FIG.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Here, a so-called digital single-lens reflex camera is used as an optical device according to the present invention, but the present invention is not limited to this. 1A and 1B are external perspective views of a digital single-lens reflex camera 100 according to an embodiment of the present invention. FIG. 1A is a front view, and FIG. 1B is a rear view. is. A digital single-lens reflex camera 100 includes a camera body 1 and an interchangeable lens 101 (lens barrel) detachable from the camera body 1 .

For convenience of explanation, as shown in FIG. 1, the X-axis direction parallel to the optical axis of an imaging optical system (not shown) housed in the interchangeable lens 101 is defined. When the X-axis is parallel to the horizontal direction, the direction perpendicular to the X-axis in the horizontal plane is defined as the Z-axis direction, and the direction parallel to the vertical direction is defined as the Y-axis direction. The direction of rotation about the Z-axis is defined as the pitch direction, and the direction of rotation about the Y-axis is defined as the yaw direction.

An imaging element 16 (see FIG. 2) is provided inside the camera body 1 for photoelectrically converting (imaging) a subject image formed by the imaging optical system in the interchangeable lens 101 . On the left side of the camera body 1 when the digital single-lens reflex camera 100 is viewed from the front side, a grip section 2 is provided for the user to grip the camera body 1 by hand. A power operating unit 3, a mode dial 4, a release button 5, and an accessory shoe 6 are provided on the upper surface of the camera body 1. As shown in FIG. A power operation unit 3 switches the power of the camera body 1 between an on state and an off state. The imaging mode is switched according to the rotating operation of the mode dial 4 . Shooting modes include a manual still image shooting mode that allows you to arbitrarily set shooting conditions such as shutter speed and aperture value, an auto still image shooting mode that automatically obtains the appropriate amount of exposure, and a movie shooting mode for shooting movies. etc., but these are only examples. When the release button 5 is half-pressed, the camera control section 12 (see FIG. 2) incorporated in the camera body 1 starts imaging preparation operations such as autofocus and automatic exposure control. When the release button 5 is fully pressed, the camera control section 12 performs an imaging operation. Accessories such as an external strobe device and an external finder device (EVF) can be attached to and detached from the accessory shoe 6 .

The interchangeable lens 101 is mechanically and electrically connected to the camera mount 7 provided on the camera body 1 via the lens mount 102 . The interchangeable lens 101 accommodates an imaging optical system that forms an image of light from a subject on the imaging device 16 . A zoom operation ring 103 rotatable around the optical axis is provided on the outer periphery of the interchangeable lens 101 . The outer periphery of the zoom operation ring 103 is knurled so that the user's hand does not slip when rotating the zoom operation ring 103 . When the zoom operation ring 103 is rotated, the zoom group constituting the imaging optical system in the interchangeable lens 101 moves to an optical position corresponding to the rotation angle of the zoom operation ring 103, changing the imaging angle of view.

A rear operation unit 8 and a display unit 9 are provided on the rear surface of the camera body 1 . The back operation unit 8 includes a plurality of buttons and dials to which various functions are assigned. The display unit 9 displays a through image of the subject image captured by the image sensor 16, a reproduced image when the captured image is reproduced, and a menu for performing various settings such as operating conditions of the digital single-lens reflex camera 100. Is displayed.

FIG. 2 is a block diagram showing the electrical and optical configurations of the camera body 1 and the interchangeable lens 101. As shown in FIG. The camera body 1 includes an accessory shoe 6, a display unit 9, a power supply unit 10, an operation unit 11, a camera control unit 12, a storage unit 13, a shutter unit 14, a shutter drive unit 15, an image sensor 16, an image processing unit 17, and a focus detection unit. It has a part 18 . The interchangeable lens 101 includes a zoom operation ring 103 , a lens control unit 104 , an electrical contact 105 , a zoom detection unit 106 , a first zoom group 201 , a lens anti-vibration group 301 , an anti-vibration drive unit 302 , an aperture 401 and an aperture drive unit 402 . , a focus group 501 and a focus driver 502 . 1 and 2, common elements are denoted by the same reference numerals, and descriptions of elements that have already been described with reference to FIG. 1 are omitted here.

A power supply unit 10 supplies power to the camera body 1 and the interchangeable lens 101 . The operation unit 11 includes a power operation unit 3, a mode dial 4, a release button 5, a rear operation unit 8, and a display unit 9 with touch panel functions. The shutter unit 14 controls the amount of light (exposure amount) that passes through the imaging optical system in the interchangeable lens 101 and irradiates the imaging element 16 . The imaging device 16 is specifically a CMOS sensor or the like, and photoelectrically converts a subject image formed by the imaging optical system to output an imaging signal. The image processing unit 17 generates an image signal (image data) by performing various types of image processing on the imaging signal. The generated image data is stored in the storage unit 13 . The focus detection unit 18 uses the image signal generated by the image processing unit 17 to determine the focus state of the subject image formed on the image pickup device 16 , generates a focus signal, and transmits it to the camera control unit 12 .

The camera control section 12 comprehensively controls the operation of each block provided in the camera body 1 . Also, the lens control unit 104 comprehensively controls the operation of each block provided in the interchangeable lens 101 . The overall operation of the digital single-lens reflex camera 100 is controlled by mutual communication between the camera control section 12 and the lens control section 104 . At that time, the camera control unit 12 and the lens control unit 104 transmit various control signals and data via the communication terminal of the electrical contact 105 provided on the lens mount 102 and the communication terminal of the electrical contact provided on the camera mount 7. and other communications. Note that the electrical contact 105 includes a power terminal that supplies power from the power supply unit 10 to the interchangeable lens 101 .

The storage unit 13 stores computer programs to be executed by the camera control unit 12 and parameters necessary for executing the computer programs, and also stores captured images (still image data and moving image data). The camera control unit 12 reads and executes computer programs stored in the storage unit 13 .

A pitch shake detector 19 and a yaw shake detector 20 detect image shake such as camera shake. The pitch vibration detection unit 19 and the yaw vibration detection unit 20 use an angular velocity sensor (vibration gyro) and an angular acceleration sensor (not shown), respectively, to detect pitch direction (rotational direction about the Z-axis) and yaw direction (rotational direction about the Y-axis). direction) and outputs a shake detection signal. The camera control unit 12 uses the shake detection signal from the pitch shake detection unit 19 to calculate the shift position of the lens stabilization group 301 in the Y-axis direction. Similarly, the camera control unit 12 uses the shake signal from the yaw shake detection unit 20 to calculate the shift position of the lens stabilization group 301 in the Z-axis direction. The camera control unit 12 drives the lens vibration reduction group 301 to the target position according to the calculated shift positions in the pitch direction and the yaw direction, and performs a vibration reduction operation to reduce image blur during exposure or through image display. .

A first zoom group 201 , a lens stabilization group 301 and a focus group 501 constitute an imaging optical system in the interchangeable lens 101 . Details of the imaging optical system of the interchangeable lens 101 will be described later. The first zoom group 201 is connected to the zoom operation ring 103 and moves in the optical axis direction according to the rotation angle of the zoom operation ring 103, thereby changing the imaging angle of view.

The zoom detection unit 106 is configured using, for example, a resistive linear potentiometer, and detects the rotation angle of the zoom operation ring 103 as an absolute value. The angle-of-view information detected by the zoom detection unit 106 is transmitted to the lens control unit 104 , transmitted from the lens control unit 104 to the camera control unit 12 , and used for various controls by the camera control unit 12 . Part of the angle-of-view information is stored in the storage unit 13 together with the captured image.

A lens vibration reduction group 301 includes a shift lens as a vibration reduction element that reduces image blur. The anti-vibration driver 302 displaces (shifts) the shift lens in the Z-axis direction and the Y-axis direction perpendicular to the optical axis to perform anti-vibration operation to reduce image blur. A diaphragm group 401 adjusts the amount of light passing through the imaging optical system. A diaphragm driver 402 drives the diaphragm group 401 . The focus group 501 includes a focus lens 510 (see FIG. 5) arranged movably in the optical axis direction. The focus drive unit 502 performs focus adjustment (focusing operation) by moving the focus lens 510 in the optical axis direction. The focus driving unit 502 is composed of a later-described vibration type actuator that moves the focus lens 520 in the optical axis direction, and a drive circuit for driving the vibration type actuator.

In the digital single-lens reflex camera 100 , the camera control section 12 controls driving of the shutter unit 14 via the shutter driving section 15 according to the aperture value and shutter speed instructed from the operation section 11 . Also, the lens control unit 104 controls driving of the diaphragm group 401 via the diaphragm driving unit 402 . When the camera control unit 12 detects an imaging preparation operation (half-pressing operation) on the operation unit 11 (release button 5), the lens control unit 104 controls the focus driving unit 502 based on an instruction from the camera control unit 12, and the focus group 501. For example, when an autofocus operation is instructed, the focus detection unit 18 detects the defocus amount based on the image signal generated by the image processing unit 17, and transmits the detected defocus amount to the camera control unit 12. . At the same time, the lens control unit 104 detects the current position of the focus group 501 by the focus driving unit 502 and transmits the detection signal to the camera control unit 12 .

The camera control unit 12 calculates a focus drive amount (movement amount of the focus group 501) from the shift amount between the focus state of the subject image and the current position of the focus group 501, and transmits the calculated focus drive amount to the lens control unit 104. do. The lens control unit 104 moves the focus group 501 to the target position by controlling the focus driving unit 502 according to the received focus driving amount. This corrects the defocus of the subject image. When the automatic exposure control operation is instructed, the camera control unit 12 performs photometry calculation based on the luminance signal generated by the image processing unit 17, and based on the result of the photometry calculation, the operation unit 11 (release button 5) is operated. The drive of the diaphragm group 401 is controlled in accordance with the imaging instruction operation (full-press operation). At the same time, the camera control section 12 controls driving of the shutter unit 14 via the shutter driving section 15 and performs exposure processing by the imaging element 16 .

Next, the positional relationship between the components of the interchangeable lens 101 and the camera body 1 will be described. 3 and 4 are cross-sectional views showing the schematic configuration of the digital single-lens reflex camera 100 in a cross-section including the optical axis O of the interchangeable lens 101 and parallel to the Y-axis. In FIG. 3, the interchangeable lens 101 is retracted, and in FIG. 4, the interchangeable lens is extended. Among the elements shown in FIGS. 3 and 4, elements that have already been described with reference to FIG. 1 or 2 are denoted by the same reference numerals, and description thereof will be omitted.

The imaging optical system includes a first zoom group 201, a second zoom group 202, a third zoom group 203, a fourth zoom group 204, a sixth zoom group 206, a lens vibration reduction group 301, a focus group 501 and It has an aperture group 401 . The diaphragm group 401 and the lens vibration reduction group 301 function as a third zoom group, and the focus group 501 functions as a fifth zoom group. Each zoom group that has moved to a predetermined optical position corresponding to the angle of view forms an image of the light from the subject on the imaging surface of the imaging element 16 .

Although the imaging optical system of the interchangeable lens 101 has a six-group configuration here, the configuration of the imaging optical system is not limited to this. For example, the lens vibration reduction group 301 and the focus group 501 may function as a second zoom group, and some lens groups may be fixed in the optical axis direction (X-axis direction). do not have.

The interchangeable lens 101 has a rectilinear guide barrel 107 and a cam barrel 108 . The rectilinear guide barrel 107 and the cam barrel 108 are made of a conductive material, specifically a metal material. Although details will be described later, this prevents the influence of the magnetic noise generated by the focus driving unit 502 on the image sensor 16. can be reduced. The rectilinear guide tube 107 is fixed to the lens mount 102 via a fixing tube (not shown). Bayonet claws (not shown) are arranged at equally divided positions on the outer peripheral surface of the rectilinear guide tube 107 . The cam barrel 108 is arranged on the outer peripheral side of the rectilinear guide barrel 107, is connected to the zoom operation ring 103, and is held so as to be rotatable about the optical axis. A circumferential groove (not shown) that engages with a bayonet claw of the rectilinear guide cylinder 107 is provided on the inner peripheral surface of the cam cylinder 108 . Since the inside of the circumferential groove is engaged with the bayonet claw, when the zoom operation ring 103 is rotated, the cam cylinder 108 rotates about the optical axis.

The rectilinear guide tube 107 is formed with rectilinear guide grooves for allowing each zoom group to move straight along the optical axis while restricting rotation. On the other hand, cam grooves for moving each zoom group in the optical axis direction are formed in the cam barrel 108 so as to form a predetermined angle with respect to the rotational direction of the cam barrel 108 . Each of the first to sixth zoom groups has a cam follower, and each cam follower is engaged with the corresponding rectilinear guide groove and cam groove. When the zoom operation ring 103 is rotated, the cam cylinder 108 rotates, and the cam follower provided in each zoom group moves through the rectilinear guide groove provided in the rectilinear guide tube 107 and the cam groove provided in the cam tube 108 . By moving, each zoom group advances and retreats in the optical axis direction.

Next, the configuration of the focus group unit including the focus group 501 will be described. FIG. 5 is an exploded perspective view of the focus group unit 500. FIG. The focus group unit 500 has a lens barrel 550 in which the focus group 501 is accommodated. The focus group 501 includes a focus lens 510 and a focus lens holding frame 520 that holds the focus lens 510 . The focus lens holding frame 520 has a sleeve portion and an anti-vibration portion. The sleeve portion is slidably fitted with a main guide 560 (first guide member) arranged substantially parallel to the optical axis O, and the anti-vibration portion is a sub-guide 570 (first guide member) arranged substantially parallel to the main guide 560. second guide member) is slidably fitted. Axial ends of the main guide 560 and the sub-guide 570 are respectively supported by the lens barrel 550 and the sixth group holding frame 206b. The sixth group holding frame 206b holds the sixth group lens 206a. In this way, the focus lens holding frame 520 is positioned in the Y-axis direction and the Z-axis direction by the main guide 560 and the sub-guide 570, and moves smoothly in the optical axis direction between the lens barrel 550 and the sixth group holding frame 206b. movably supported.

Note that the lens barrel 550 is connected to the sixth group holding frame 206b by a main guide 560 and a sub-guide 570. As shown in FIG. As described above, the engagement between the cam barrel 108 and the rectilinear guide barrel 107 allows each zoom group to move in the direction of the optical axis. It is possible to move straight along the optical axis (see FIGS. 3 and 4).

A linear drive type vibration actuator 507 is mounted on the side surface (outer peripheral surface) of the lens barrel 550 as an actuator that constitutes a part of the focus driving section 502 . The vibration type actuator 507 has a long axis in the optical axis direction, and includes a movable portion 508 having a vibrating body and a fixed portion 509 having a contact body (friction member). The vibrating body has an elastic body having a friction contact portion (protrusion) with the contact body, and a piezoelectric element fixed to the surface of the elastic body opposite to the surface on which the friction contact portion is provided with an adhesive or the like. . A flexible printed wiring board 580 for supplying power to the piezoelectric element is attached to the lens barrel 550, and various circuit components for driving the vibrator are mounted on the flexible printed wiring board 580. FIG. Note that the internal structure of the vibration type actuator 507 is not directly related to the present invention, so a more detailed description will be omitted.

By applying a two-phase AC voltage having a predetermined phase difference to the piezoelectric element through the flexible printed wiring board 580, a resonance phenomenon can be generated in the vibrating body, and an elliptical motion can be generated in the frictional contact portion. Due to the elliptical motion generated in the friction contact part, the friction contact part gives a thrust (frictional driving force) to the contact body. A movable portion 508 moves in the optical axis direction.

The fixed portion 509 is fixed to the lens barrel 550 . The movable portion 508 is connected to the focus lens holding frame 520 via a rack 530 (connecting member), so that the movable portion 508 and the focus lens holding frame 520 move integrally in the optical axis direction. At this time, by changing the frequency and phase of the two-phase AC voltage applied to the piezoelectric element, the rotation direction and elliptical ratio of the elliptical motion can be changed, and the moving direction and moving speed of the movable part 508 can be controlled. . The lens control unit 104 can control traveling waves generated in the vibrating body, and can move the focus group 501 in the optical axis direction to reach the target position.

A step-up transformer 590 is included in the circuit components mounted on the flexible printed wiring board 580 to supply power to the piezoelectric element. The step-up transformer 590 is one of the electrical components that make up the focus driving section 502, generates a voltage higher than the voltage supplied to the lens control section 104, and supplies power to the piezoelectric element. A drive circuit that constitutes the focus drive unit 502 performs switching of a DC voltage circuit with a pulse signal generated at a predetermined frequency, for example, and boosts the switched voltage with a step-up transformer 590 to apply it to the piezoelectric element. Generate a sinusoidal voltage. However, the configuration of the focus driving unit 502 is not limited to such a configuration.

The step-up transformer 590 generates magnetic noise. When the magnetic noise reaches the imaging element 16, a magnetic field that changes at high frequency penetrates the signal line of the pixel charge information for extracting the imaging signal. As a result, magnetism is generated in the signal line due to electromagnetic induction, and as a result, noise is generated in the signal line for pixel charge information. Thus, when magnetic noise is superimposed on the imaging signal in the process of the imaging device 16 generating and outputting the imaging signal, the image quality may be degraded.

An arrangement form of the focus group unit 500 capable of solving this problem and realizing a small diameter of the interchangeable lens 101 will be described. FIG. 6 is a side view of the focus group unit 500. FIG. FIG. 7A is a cross-sectional view showing a state in which the focus group 501 is arranged at one end of the movement range MR. FIG. 7B is a cross-sectional view showing a state in which the focus group 501 is arranged at the other end of the movement range MR. 8 is a cross-sectional view of the interchangeable lens 101 on a plane perpendicular to the optical axis O. FIG.

As shown in FIG. 8, the lens barrel 550 is arranged on the inner peripheral side of the rectilinear guide barrel 107 when viewed from the optical axis direction, and has a substantially cylindrical shape along the inner diameter of the rectilinear guide barrel 107 . The focus lens holding frame 520, the main guide 560, and the sub-guide 570 are arranged inside the outer circumference of the lens barrel 550 (the circumscribed circle of the lens barrel 550 centered on the optical axis).

The step-up transformer 590 and the vibration type actuator 507 are arranged on the outer peripheral side surface of the lens barrel 550 when viewed from the optical axis direction as shown in FIG. are arranged so that they do not protrude outward from the circle). On the other hand, focusing on the position of the step-up transformer 590 in the optical axis direction, as shown in FIG. Located on the outer circumference. In other words, the step-up transformer 590 and the vibration type actuator 507 are arranged so as to overlap each other when projected onto the optical axis from a direction orthogonal to the optical axis.

As shown in FIGS. 7A and 7B, at least part of the step-up transformer 590 covers a range in which the focus group 501 can move while being guided by the main guide 560 and the sub-guide 570, that is, a moving range MR placed inside. Focusing on the circumferential phases of the step-up transformer 590, main guide 560, and sub-guide 570, as shown in FIG. placed in phase.

In this manner, in the interchangeable lens 101, the vibration type actuator 507 and the step-up transformer 590 are arranged by effectively utilizing the space in the optical axis direction and the circumferential direction of the lens barrel 550. FIG. This makes it possible to suppress an increase in the diameter (enlargement) of the interchangeable lens 101 or to reduce the diameter (downsize) of the interchangeable lens 101 . Further, since the cam cylinder 108 and the rectilinear guide cylinder 107 are made of a metal material, it is possible to reduce magnetic flux leaking from the outer peripheral side. In other words, the magnetic flux generated by the step-up transformer 590 attempts to pass through metal, which is a conductor, and when the magnetic flux density changes in the process, an eddy current is generated by electromagnetic induction. As a result, the magnetic flux penetrating through the cam cylinder 108 and the rectilinear guide cylinder 107 is reduced, and the effect of magnetic noise on the imaging element 16 can be reduced, thereby suppressing deterioration in image quality. Become.

Although the present invention has been described in detail based on its preferred embodiments, the present invention is not limited to these specific embodiments, and various forms without departing from the gist of the present invention can be applied to the present invention. included. Furthermore, each embodiment described above merely shows one embodiment of the present invention, and it is also possible to combine each embodiment as appropriate. For example, in the above embodiment, the imaging optical system of the interchangeable lens 101 has a six-group structure, but it is not limited to this.

Reference Signs List 1 camera body 100 digital single-lens reflex camera 101 interchangeable lens 107 rectilinear guide tube 108 cam tube 500 focus group unit 501 focus group 502 focus drive unit 507 vibration type actuator 520 focus lens holding frame 550 lens barrel 560 main guide 570 sub-guide 590 step-up transformer

Claims (7)

straight guide tube;
a zoom lens group guided in the optical axis direction by the rectilinear guide barrel;
a lens barrel disposed on the inner peripheral side of the rectilinear guide barrel;
focus lens and
a lens holding frame that holds the focus lens;
a main guide member that guides the sleeve portion of the lens holding frame in the optical axis direction;
a sub-guide member that stabilizes the anti-vibration portion of the lens holding frame;
an actuator that drives the lens holding frame in the optical axis direction;
and a flexible printed wiring board on which a circuit component for supplying power to the actuator is mounted, wherein
the lens holding frame, the main guide member, and the sub-guide member are arranged inside the outer circumference of the lens barrel,
All the constituent members of the actuator are arranged inside the outer circumference of the lens barrel, and when viewed from the optical axis direction of the focus lens, the inner peripheral surface of the rectilinear guide barrel and the side surface of the lens barrel. is placed in the space between
The circuit components mounted on the flexible printed wiring board are arranged on the side surface of the lens barrel, and when viewed from the optical axis direction of the focus lens, the inner peripheral surface of the rectilinear guide barrel and the side surface of the lens barrel are arranged. is placed in the space between
When viewed from the optical axis direction of the focus lens, the actuator is closer to the main guide member than the sub-guide member in the circumferential direction of the lens barrel, and the circuit component is closer to the sub-guide member than to the main guide member. near,
When viewed from the optical axis direction of the focus lens, along the inner peripheral surface of the rectilinear guide barrel, in the circumferential direction of the lens barrel in the order of the sub-guide member, the circuit component, the actuator, and the main guide member. An optical instrument characterized by being arranged. 2. An optical instrument according to claim 1, wherein said rectilinear guide cylinder is made of a conductive material. Equipped with a rotatable cam barrel around the optical axis,
3. The optical apparatus according to claim 1, wherein the cam barrel is arranged on the outer peripheral side of the rectilinear guide barrel. 4. The optical apparatus according to claim 3, wherein the lens barrel is movable in the optical axis direction as the cam barrel rotates due to engagement between the cam barrel and the rectilinear guide barrel. 5. An optical device according to claim 3, wherein said cam cylinder is made of a conductive material. 6. The optical apparatus according to claim 1, wherein the actuator is a vibration type actuator having a vibrating body and a contacting body that contacts the vibrating body. The vibration type actuator is
a movable part that holds the vibrating body and is connected to the lens holding frame;
a fixing portion to which the contact body is fixed and attached to the lens barrel;
7. A method according to claim 6, wherein the lens holding frame and the movable portion move together in the optical axis direction due to reaction force when the vibrating body applies thrust to the contact body. optics.