JP2005309340A - Lens driving device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a lens driving device realizing miniaturization and the reduction of assembly man-hour while realizing an automatic variable power function and an automatic focusing function. <P>SOLUTION: The lens driving device for a camera is constituted by adopting driving units 90A and 90B where a stepping motor 91 and a plurality of gears 96a to 96f are unitized as a driving mechanism for rotating cam bodies 20 and 30, and a holding member 80 or the like holding the driving units 90A and 90B in common so that gears for output 96f possessed by the driving units 90A and 90B may be meshed with the gears 25 and 35 of the cam bodies 20 and 30. Thus, the driving units 90A and 90B are held in common and unified, whereby space occupied by the driving mechanism is minimized, and the lens driving device is easily assembled in the narrow space of a personal digital assistant or the like. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a lens driving device provided with a driving source that automatically moves a lens in an optical axis direction, and more particularly to a lens driving device applied to a camera mounted on a portable information terminal such as a mobile phone or a personal computer. About.

  A camera mounted on a portable information terminal such as a cellular phone or a personal computer needs to be as small as possible because the mounting space of the portable information terminal is narrow. For this reason, even if the camera mounted on the portable information terminal has a scaling function, it is based on a manual operation (for example, see Patent Document 1).

Japanese Patent Laid-Open No. 2003-60764

By the way, when a camera that performs zooming by manual operation is mounted on a portable information terminal, it is necessary to take an image while operating an operation unit provided on a small camera, and there is a disadvantage that operability is poor To do.
On the other hand, it is necessary to change the relative distance in the optical axis direction of a plurality of lens groups in order to give the camera mounted on the portable information terminal an automatic scaling function, and an actuator that drives the plurality of lens groups Is required. In particular, in order to automatically perform the focusing operation (focus adjustment) at each magnification position in addition to the automatic magnification operation, it is necessary to independently change the positions of the plurality of lens groups in the optical axis direction. Therefore, a plurality of actuators are required.
Therefore, if the space occupied by the actuator is large, it becomes difficult to incorporate these into the narrow mounting space of the portable information terminal. Also, the number of assembly steps for assembling the actuator to the portable information terminal increases.

  The present invention has been made in view of the circumstances of the above-described prior art, and an object of the present invention is to be mounted in a small mounting space such as a portable information terminal while having an automatic zooming function and an automatic focusing function. An object of the present invention is to provide a lens driving device for a camera.

The lens driving device according to the present invention includes a plurality of lens frames that hold lenses arranged in the optical axis direction, and a cam that is rotatably supported around the optical axis and moves the lens frames in the optical axis direction by rotation. A plurality of cam bodies, and a drive mechanism for rotating the plurality of cam bodies. The drive mechanism includes a plurality of drive units that respectively supply rotational force to the plurality of cam bodies, and a plurality of drive units that are provided with the plurality of cam bodies. And a holding member that is commonly held at a position to be engaged with each other.
According to this configuration, the plurality of cam frames can be independently rotated in the optical axis direction by independently rotating the plurality of cam bodies by the drive units corresponding thereto, and automatic zooming operation and automatic focusing can be performed. Both operations can be realized.
In addition, it is possible to reduce the size by holding the plurality of drive units in common by the holding member and grouping them together. For example, when incorporating a lens drive device in a portable information terminal or the like, the plurality of drive units Can be incorporated in a state where they are respectively engaged with the cam body, and can be easily incorporated into a portable information terminal or the like.

In the above configuration, the drive unit can employ a configuration including a motor and a speed reducer composed of a plurality of gears that reduce the rotation of the motor and transmit it to the cam body.
According to this configuration, the rotation of the motor can be decelerated by the speed reducer and applied to the cam body, and the rotational position of the cam body can be finely adjusted without precisely controlling the rotational position of the motor.

In the above-described configuration, the plurality of drive units may be configured to be held by the holding member so that the side surfaces from which the power supply terminals of the motor protrude are in the same direction.
According to this configuration, since all the power supply terminals are arranged in the same direction, for example, it is very easy to connect a wiring board or a wiring cable to the power supply terminal of the motor.

The said structure WHEREIN: The some drive unit can employ | adopt the structure which has the same structure.
According to this configuration, since the plurality of drive units have the same structure, the versatility of the drive units can be increased and the manufacturing cost can be reduced.

In the above configuration, the cam body may be formed in a cylindrical shape, and a configuration in which a gear that meshes with an output gear of the speed reducer is integrally formed on the outer periphery.
According to this configuration, power can be transmitted from the drive unit to the cam body only by holding the drive unit on the holding member, and assembly is facilitated. Moreover, the number of parts is reduced by integrally forming a gear on the outer periphery of the cam body.

In the above configuration, the motor may be a stepping motor.
According to this configuration, the stepping motor is a motor that can obtain the amount of rotation corresponding to the number of input pulses, so that a sensor for detecting the rotational position of the motor and a feedback circuit are not required, and the device is reduced in size, weight, and simplicity. Contributes to Further, the rotational position of the cam body can be finely adjusted by combining the stepping motor and the speed reducer.

  According to the lens driving device of the present invention, the space occupied by the driving mechanism can be minimized while realizing the automatic zooming function and the automatic focusing function, and can be easily incorporated into a narrow mounting space such as a portable information terminal. It becomes.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, exemplary embodiments of the invention will be described with reference to the accompanying drawings.
FIG. 1 to FIG. 10 show an embodiment of a lens driving device according to the present invention. FIG. 1 is a schematic perspective view of the device, FIG. 2 is a sectional view showing the internal structure of the device, and FIG. FIG. 4 is a schematic perspective view of a lens barrel portion constituting the apparatus, FIG. 5 is an exploded perspective view of the lens barrel portion, and FIG. 6 is a diagram of the apparatus with the drive unit constituting the apparatus removed. 7 is a perspective view showing the structure of the holding member, FIG. 8 is a perspective view showing the structure of the drive unit, FIG. 9 is a perspective view showing the structure of the speed reducer included in the drive unit, and FIG. It is sectional drawing which shows an internal structure.

As shown in FIGS. 1 to 6 and 10, the lens driving device includes a fixed cylinder 10 that holds lenses G 5 and G 6, and a first cylinder that is rotatably supported around the optical axis direction L 1 outside the fixed cylinder 10. The first and second cam bodies 20 and 30, the first lens frame 40 holding the lens G1, the second lens frame 50 holding the lenses G2, G3 and G4, the first lens frame 40 and the second lens. A compression spring 60 disposed between the frame 50, a holding frame 70 for holding a CCD (charge coupled device) 150, a holding member 80 disposed on the outer periphery of the first and second cam bodies 20, 30, and a holding member Two drive units 90 </ b> A, 90 </ b> B and the like held by 80 are provided.
In addition, a camera unit is formed by holding the CCD 150 as an imaging element in the holding frame 70.

In this apparatus, the lenses G5 and G6 form a first lens group, the lens G1 forms a second lens group, and the lenses G2, G3, and G4 form a third lens group. Enters the CCD 150 via the lenses G6, G1, G2, G3 and G4.
Then, the second lens group (lens G1) and the third lens group (lenses G2, G3, G4) are moved relative to each other in the optical axis direction L1, thereby changing the subject with respect to the imaging surface of the CCD 150. A doubling operation and a focusing operation are performed.

  As shown in FIGS. 1 to 6, the fixed cylinder 10 is formed in a cylindrical shape from a resin material. The fixed cylinder 10 includes a lens holding portion 10a, an inner peripheral surface 10f, a guide hole 10g, an outer peripheral surface 10h, and the like.

The lens holding portion 10a is formed in a cylindrical shape at the tip portion in the optical axis direction L1, and holds the lenses G5 and G6 on the inner periphery.
The outer peripheral surface 10h is formed in a cylindrical shape behind the lens holding portion 10a and has an outer diameter smaller than the outer diameter of the lens holding portion 10a. The outer peripheral surface 10h supports the first and second cam bodies 20, 30 so as to be rotatable around the optical axis.
The inner peripheral surface 10f supports the outer peripheral surface 10h and the first and second lens frames so as to be movable in the optical axis direction L1.
The guide holes 10g are formed along the optical axis direction L1 behind the lens holding portion 10a, and three guide holes are formed at equal intervals around the optical axis. Three protruding pieces 41 and 51 of first and second lens holding frames 40 and 50, which will be described later, are inserted into the guide hole 10g, and the first and second lens holding frames 40 and 50 rotate around the optical axis. And is guided in the optical axis direction L1.

The first cam body 20 moves the first lens frame 40 in the optical axis direction L1 by rotation around the optical axis. The first cam body 20 is formed in a cylindrical shape from a resin material, and as shown in FIGS. 2 to 5, an inner peripheral surface 20 f that is rotatably supported by the outer peripheral surface 10 h of the fixed cylinder 10, a light The cam surface 21 exerts a cam action on the first lens frame 40 formed on the rear end surface of the axial direction L1, and the gear 25 formed integrally on the outer periphery of the front end portion in the optical axis direction L1.
The cam surface 21 is formed corresponding to each of three protruding pieces 41 of the first lens frame 40 described later.
The gear 25 meshes with an output gear 96f in a drive unit 90A described later. Thereby, the rotational force is transmitted from the drive unit 90 </ b> A to the first cam body 20.

The second cam body 30 moves the second lens frame 50 in the optical axis direction L1 by rotation around the optical axis. The second cam body 30 is formed in a cylindrical shape from a resin material, and as shown in FIGS. 2 to 5, an inner peripheral surface 30 f that is rotatably supported by the outer peripheral surface 10 h of the fixed cylinder 10, a light A cam surface 31 exerting a cam action on the second lens frame 50 formed on the front end surface in the axial direction L1 and a gear 35 integrally formed on the outer periphery of the rear end portion in the optical axis direction L1.
The cam surface 31 is formed corresponding to each of three protruding pieces 51 of a second lens frame 50 described later.
The gear 35 meshes with an output gear 96f in a drive unit 90B described later. Thereby, the rotational force is transmitted from the drive unit 90 </ b> B to the second cam body 30.

The first lens frame 40 is made of a resin material, and holds the lens G1 as shown in FIGS. The first lens frame 40 is integrally formed on the outer peripheral surface 40h and a cylindrical outer peripheral surface 40h supported by the inner peripheral surface 10f of the fixed barrel 10 so as to be movable in the optical axis direction L1. Three projecting pieces 41 are provided.
The three protruding pieces 41 are respectively inserted into the guide holes 10 g of the fixed cylinder 10 and are in contact with the cam surface 21 of the first cam body 20. Accordingly, the first lens frame 40 is moved only in the optical axis direction L1 following the profile of the cam surface 21 while the rotation is restricted by the guide hole 10g.

The second lens frame 50 is formed of a resin material, and holds the lenses G2, G3, G4 as shown in FIGS. The second lens frame 50 is integrally formed on the outer peripheral surface 50h and a cylindrical outer peripheral surface 50h supported by the inner peripheral surface 10f of the fixed cylinder 10 so as to be movable in the optical axis direction L1. Three projecting pieces 51 are provided.
The three protruding pieces 51 are respectively inserted into the guide holes 10 g of the fixed cylinder 10 and are in contact with the cam surface 31 of the second cam body 30. As a result, the second lens frame 50 is moved only in the optical axis direction L1 following the profile of the cam surface 31 while its rotation is restricted by the guide hole 10g.

  2, 3 and 5, the compression spring 60 is formed of a coiled spring, and is sandwiched between the first lens frame 40 and the second lens frame 50. A biasing force is applied to press the protruding pieces 41 and 51 of the second lens frames 40 and 50 against the cam surfaces 21 and 31, respectively. The compression spring 60 is for constantly engaging the projecting pieces 41 and 51 and the cam surfaces 21 and 31 to obtain a stable cam action.

The holding frame 70 is formed in a cylindrical shape by a resin material, and as shown in FIGS. 2 to 6, a circular opening 72 that allows subject light to pass therethrough and formed at the center of the outer surface. The CCD 150 is mounted with a CCD mounting portion 71 having a rectangular recess.
The annular end surface 70e inside the holding frame 70 is joined to the annular end surface 10e of the fixed cylinder 10 by an adhesive or the like. As shown in FIGS. 2 and 3, the end surface 70 e faces the annular end surface 30 e of the second cam body 30 in a state where the holding frame 70 is bonded and fixed to the fixed cylinder 10, and the second cam body 30. The movement in the optical axis direction L <b> 1 is restricted so that the second cam body 30 does not fall out of the fixed cylinder 10.

As shown in FIGS. 1 to 3, the holding member 80 holds two drive units 90 </ b> A and 90 </ b> B in common. The holding member 80 constitutes a drive mechanism that rotates the first and second cam bodies 20 and 30 around the optical axis together with the drive units 90A and 90B.
The holding member 80 is formed of a resin material. As shown in FIGS. 6 and 7, the holding member 80 is formed integrally with the cylindrical portion 85, the outer side of the cylindrical portion 85, and the light. It has opposing wall portions 81, 81 and the like arranged in parallel in the axial direction L1.

Inside the cylindrical portion 85 of the holding member 80, the first and second cam bodies 20, 30, the first and second lens frames 40, 50, and the like are disposed. Further, both end faces of the cylindrical portion 85 in the optical axis direction L1 are opposed to the gear 25 of the first cam body 20 and the gear 35 of the second cam body 30, respectively.
The holding frame 80 has a flat installation surface 84 between the walls 81 and 81, and the drive units 90 </ b> A and 90 </ b> B are installed on the installation surface 84.
As shown in FIGS. 6 and 7, protrusions 83 are integrally formed at two locations in the optical axis direction L <b> 1 between the installation surface 84 and the wall portion 81. The protrusion 83 is fitted in the recess 97a of the drive unit 90 (90A, 90B) shown in FIG. 8A, so that the drive unit 90 (90A, 90B) installed on the holding member 80 in the optical axis direction L1. Restrict movement.

The wall portion 81 of the holding member 80 has a latching portion 82 that is bent inward at the upper end portion and extends in the optical axis direction L1. This latching portion 82 latches drive units 90A and 90B, which will be described later, and prevents the drive units 90A and 90B from falling off the holding member 80.
Further, the distance between the opposing wall portions 81, 81 is shorter than the outer diameter of the lens holding portion 10 a of the fixed cylinder 10.

The drive units 90A and 90B have the same structure, the drive unit 90A rotates the first cam body 20, and the drive unit 90B rotates the second cam body 30.
As shown in FIGS. 8 and 9, the drive unit 90 (90A, 90B) includes a stepping motor 91, gears 96a to 96f, a cover member 97, a support plate 98, a base member 99, and the like.
The cover member 97 and the base member 99 are fastened by screws with the support plate 98 interposed therebetween.

The gears 96a to 96f constitute a reduction gear having the gear 96a as an input gear and the gear 96f as an output gear.
The gear 96a is fixed to the rotating shaft 91a of the stepping motor 91 and meshes with the gear 96b.
The gear 96b is fixed to a rotating shaft 95a whose shaft end is rotatably supported by a base member 99 and a support plate 98, and meshes with the gear 96c.
The gear 96c is fixed to a rotating shaft 95b whose shaft end is rotatably supported by a cover member 97 and a base member 99.
The gear 96d is fixed to a rotary shaft 95b to which the gear 96c is fixed, rotates with the gear 96c, and meshes with the gear 96e.
The gear 96e is fixed to a rotating shaft 95c whose shaft end is rotatably supported by a cover member 97 and a base member 99.

  The gear 96f is fixed to a rotary shaft 95c to which the gear 96e is fixed, and rotates together with the gear 96e. The gear 96 f meshes with the gear 25 of the first cam body 20 or the gear 35 of the second cam body 30. For this reason, a part of the gear 96 f protrudes from one side surface of the drive unit 90. A part of the gear 96e protrudes from one side surface of the drive unit 90.

  The stepping motor 91 is supported by a cover member 97 and a support plate 98 at the end in the direction of the rotation shaft 91a. A plurality of power supply terminals 92 for supplying a drive current are provided on the outer peripheral surface of the stepping motor 91 so as to protrude. As shown in FIGS. 1 to 3, these power supply terminals 92 protrude outward from the side surface 90 s of the drive unit 90.

  As shown in FIG. 8A, the cover member 97 has recesses 97a into which the projections 83 formed on the flat surface 84 are fitted at two places on the installation surface 97b placed on the installation surface 84 of the holding member 80. doing.

The drive units 90 </ b> A and 90 </ b> B configured as described above are installed such that the installation surface 97 b faces the installation surface 84 of the holding member 80, and the protrusion 83 of the holding member 80 fits into the recess 97 a of the cover member 97. Further, as shown in FIGS. 1 to 3, the drive units 90A and 90B are installed such that the side surface 90s from which the power supply terminal 92 protrudes faces outward, and are installed opposite to each other in the optical axis direction L1. The Further, the drive units 90 </ b> A and 90 </ b> B are fitted between the opposing wall portions 81 and 81 of the holding member 80, and are hooked by the hooking portions 82 of the holding member 80 and fixed to the holding member 80.
As shown in FIG. 1, the drive units 90 </ b> A and 90 </ b> B form a rectangular parallelepiped outer shape as a whole when fixed to the holding member 80. By installing the two drive units 90A and 90B on the holding member 85, the space occupied by the drive units 90A and 90B can be minimized.

  The power supply terminals 92 of the drive units 90A and 90B are arranged in the same direction. When the power supply terminals 92 of the drive units 90A and 90B are arranged in the same direction, for example, it becomes easy to connect a wiring board or a power supply cable for supplying a drive current to the power supply terminal 92. The space occupied by the cable can be minimized.

Next, the operation of the lens driving device will be described with reference to FIGS.
The first and second lens frames 40 and 50 of the lens driving device shown in FIG. 2 are in the wide-angle shooting position, and the first and second lens frames 40 and 50 are moved from this position to the telephoto end shooting position. Then, a pulsed drive current is supplied to the power supply terminal 92 of the stepping motor 91 included in the drive units 90A and 90B to rotate it in a predetermined direction. The rotation of the stepping motor 91 is decelerated by a speed reducer including gears 96a to 96f, and the rotation is transmitted from the output gear 96f to the gears 25 and 35 of the first and second cam bodies 20 and 30, and the first and first The two cam bodies 20 and 30 rotate around the optical axis.

At this time, the cam action of the cam surfaces 21 and 31 of the first and second cam bodies 20 and 30 causes the first and second lens frames 40 and 50 to change in the optical axis direction while changing the relative distance. It moves to L1 and reaches a telephoto shooting position as shown in FIG.
In order to move the first and second lens frames 40 and 50 to desired imaging positions, it is necessary to move the first and second lens frames 40 and 50 from the current positions to the desired imaging positions. The rotation amount of the stepping motor 91 may be calculated, and a command for the number of pulses corresponding to the rotation amount may be given to the stepping motor 91.

  The focus adjustment at the photographing positions of the first and second lens frames 40 and 50 drives both the drive units 90A and 90B while maintaining the relative positional relationship between the first and second lens frames 40 and 50. It is also possible to adjust the relative distance between the first and second lens frames 40 and 50 by driving one of the drive units 90A and 90B at each photographing position.

According to the present embodiment, when the drive units 90A and 90B are mounted at predetermined positions of the holding member 80, the gear 96f of the drive units 90A and 90B is formed on the first and second cam bodies 20 and 30. Since it meshes with 25 and 35, assembly is very easy.
Further, in the present embodiment, the stepping motor 91 and the speed reducer including the plurality of gears 96a to 96f are integrated to form the drive units 90A and 90B, and these are held together in the holding member 80 and combined into one. As a result, downsizing becomes possible, and incorporation into a narrow space of a portable information terminal or the like becomes easy.

In the present embodiment, in the drive unit 90, the rotational positions of the first and second cam bodies 20 and 30 are finely controlled by combining the stepping motor 91 and the speed reducer including the plurality of gears 96a to 96f. Can do. That is, since the step angle of the stepping motor 91 is relatively large, precise positioning is difficult when the first and second cam bodies 20 and 30 are directly rotated by the stepping motor 91. On the other hand, the amount of rotation of the first and second cam bodies 20 and 30 can be made finer with respect to the amount of rotation of the stepping motor 91 by interposing the speed reducer, even if the step angle of the stepping motor 91 is large. The rotational positions of the first and second cam bodies 20, 30 can be finely controlled, and the first and second lens frames 40, 50 can be finely adjusted. As a result, the focus adjustment can be performed precisely and the resolution can be improved.
In addition, since the so-called open loop control can be performed by using the stepping motor 91, a rotational position sensor and a feedback circuit become unnecessary, the apparatus can be miniaturized, and the apparatus configuration can be simplified. it can.

Next, an example in which the camera unit 200 including the lens driving device is applied to a portable information terminal will be described with reference to FIG.
FIG. 11 shows a mobile phone of a type that can change the posture of the lid 220 on which the display device is mounted with respect to the main body 210.
The lens barrel portion of the camera unit 200 is fixed in connecting portions 212 and 222 that connect the lid portion 220 and the main body 210. The drive unit 90 held by the holding member 80 is fixed in the main body 210.

In the camera unit 200, since the drive unit 90 is united by the holding member 80, the drive unit 90 is built in the main body 210 while the lens barrel portion is built in a narrow space such as the connecting portions 212 and 222. can do.
In this mobile phone, the camera unit 200 performs a scaling operation while operating the operation buttons 215 provided on the main body 210. At each zoom position, focus adjustment is automatically performed.

The present invention is not limited to the embodiment described above.
In the embodiment described above, the case where the drive unit is configured by a stepping motor and a speed reducer has been described. However, the present invention is not limited to this, and other motors such as a direct current motor can also be used. It is also possible to configure the drive unit with only a motor without using a reduction gear.

  Further, in the above-described embodiment, the case where the lens frames 40 and 50 are provided has been described. However, the present invention is not limited to this, and the present invention is configured in a configuration including one lens frame or three or more lens frames. It is also possible to apply.

  As described above, the lens driving device of the present invention is applied as a lens driving device for a digital camera unit mounted on a portable information terminal or the like that is required to be reduced in size and weight, such as a mobile phone and a portable personal computer. Needless to say, the present invention is useful in other lens optical systems as long as the lens needs to be driven.

It is a general-view perspective view which shows one Embodiment of the lens drive device which concerns on this invention. It is sectional drawing which shows one Embodiment of the lens drive device which concerns on this invention. It is a perspective view including the cross section which shows one Embodiment of the lens drive device which concerns on this invention. It is a general | schematic perspective view of the lens-barrel part of a lens drive device. It is a disassembled perspective view of the lens-barrel part of a lens drive device. It is a general | schematic perspective view of the lens drive device of the state which removed the drive unit. (A) is a general-view perspective view of a holding member, (b) is the side view seen from the optical axis direction of the holding member. (A) is a general perspective view of the drive unit, (b) is a general perspective view of the drive unit in the other state with the case member removed. It is a perspective view which shows the structure of the reduction gear of a drive unit. It is sectional drawing which shows one Embodiment of the lens drive device which concerns on this invention. It is a general-view perspective view of the mobile telephone carrying the lens drive device based on this invention.

Explanation of symbols

L1 ... Optical axis direction G1 to G6 ... Lens 10 ... Fixed cylinder 20 ... First cam body 21 ... Cam surface 25 ... Gear 30 ... Second cam body 31 ... Cam surface 35 ... Gear 40 ... First lens frame 50 ... second lens frame 60 ... compression spring 70 ... holding frame 71 ... CCD mounting portion 80 ... holding member (drive mechanism)
90 (90A, 90B) ... drive unit (drive mechanism)
91 ... Stepping motor (motor)
96a to 96b ... gears (reduction gears)
150 ... CCD (imaging device)
200 ... Camera unit

Claims (6)

A plurality of lens frames that hold lenses arranged in the optical axis direction; a plurality of cam bodies that are rotatably supported around the optical axis and have cams that move the lens frames in the optical axis direction by rotation; A drive mechanism for rotating the plurality of cam bodies,
The drive mechanism includes a plurality of drive units that respectively supply rotational force to the plurality of cam bodies, and a holding member that commonly holds the plurality of drive units at positions where they are engaged with the plurality of cam bodies, respectively. Have
A lens driving device. The lens driving device according to claim 1, wherein the drive unit includes a motor and a speed reducer including a plurality of gears that reduce the rotation of the motor and transmit the reduced speed to the cam body. The plurality of drive units are held by the holding member so that the side surfaces from which the power supply terminals of the motor protrude are in the same direction.
The lens driving device according to claim 2. The plurality of drive units have the same structure,
The lens driving device according to claim 1, wherein the lens driving device is a lens driving device. The cam body is formed in a cylindrical shape, and a gear that meshes with an output gear of the speed reducer is integrally formed on the outer periphery.
The lens driving device according to claim 2, wherein the lens driving device is a lens driving device. The motor comprises a stepping motor;
The lens driving device according to claim 2, wherein the lens driving device is a lens driving device.

Images