JP2005091461A - Lens driving apparatus, manufacturing method therefor, and mobile device with camera - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lens driving apparatus which is made easy to manufacture and a manufacturing method therefor. <P>SOLUTION: A lens driving apparatus 1 has a lens holder 10 holding a lens 14 and a driving means which moves the lens holder straight along the direction of an optical axis 11 of the lens 14. The apparatus 1 has a case 24 where the lens holder 10 and an electromagnetic mechanism being the driving means, and the case 24 is constituted so as to be divided into at least two case dividers 26 and 42, and the two case dividers 26 and 42 have a feed member passage part for pulling a feed member feeding power to the electromagnetic mechanism, out of the case 24. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a driving device for a photographing lens used in a relatively small camera such as a camera of a camera-equipped mobile phone, a manufacturing method thereof, and a portable device with a camera.

  In many cases, a mobile phone equipped with a camera holds a mobile phone with one hand and shoots the subject's own face or other close-up subject. For this reason, many photographic lens systems used in this type of camera have a close-up photographing function. In the case of a photographing lens system having such a close-up photographing function, the lens position when performing normal photographing differs from the lens position when performing close-up photographing, that is, macro photographing. That is, the lens position during close-up photography is a position that is closer to the subject side by a slightly fixed distance than the lens position during normal photography.

  For this reason, this type of photographic lens system includes a drive mechanism for moving the lens position between the normal photographic position and the macro photographic position, and drives the drive mechanism by switching the switch. The lens moves between shooting positions. A small camera is equipped with a lens driving device that moves the lens by directly using electromagnetic force to drive the lens for reasons such as downsizing and weight reduction of the device (for example, Patent Document 1, Patent). Reference 2).

JP 2000-187862 A (summary) JP 10-150759 A (summary)

  The present applicant has previously proposed a novel lens driving device of an electromagnetic driving system (Japanese Patent Application No. 2003-185552). As shown in FIG. 11, the novel lens driving device 100 includes a lens holder 110 that holds a lens 114, a ring-shaped driving magnet 116 that is fixed around the lens holder 110, and a driving magnet 116. The first and second drive coils 128 and 130 wound in a ring shape disposed opposite to each other, and the ring-shaped first and second magnetic bodies disposed so as to sandwich the first and second drive coils 128 and 130 therebetween. 132 and 134, and the case body 124 including the first and second case division bodies 126 and 142 is mainly configured. FIG. 12 is an external view of the case body 124 portion of the lens driving device 100.

  A method of manufacturing the case body 124 of the lens driving device 100 will be described with reference to FIG. First, the first and second drive coils 128 and 130 are inserted into the first case divided body 126, and in this state, the power supply lines 172 and 174 of the first and second drive coils 128 and 130 are connected to the first case divided body 126. Pull out from holes 148, 148, 149, 149, respectively. First, the feeder lines 172 and 174 are pulled out from the holes 148, 148, 149, and 149 because it is very difficult to pull out the feeder lines, and it is almost impossible to carry out after each member is assembled in the case body 124. is there. After this work, the main bodies of the first and second drive coils 128 and 130 are taken out of the first case divided body 126. Next, the first magnetic body 132 and the main body of the first drive coil 128 are sequentially housed in the first case divided body 126. Thereafter, the lens holder 110 around which the drive magnet 116 is fixed in advance is housed in the first case divided body 126. Then, the main body of the second drive coil 130 and the second magnetic body 134 are sequentially accommodated in the first case divided body 126. Finally, the second case divided body 142 is fitted into the first case divided body 126. This fitting step is performed while fitting the threads formed around the second case divided body 142 and the inner wall of the first case divided body 126.

  However, in the manufacturing method of the lens driving device 100, it is difficult and time-consuming to pass the feeding lines 172 and 174 of the two driving coils 128 and 130 through the holes 148, 148, 149 and 149 of the first case divided body 126. There is a problem. Also, after inserting the feeders 172, 174 into the holes 148, 148, 149, 149, the coil main body is taken out once, another member is assembled, and then the coil main body is inserted again. There is a problem that requires. In addition, since the second drive coil 130 must be positioned by fitting the second case divided body 142 through the second magnetic body 134, the second drive coil 130 may be depending on how the second case divided body 142 is fitted. Or the second drive coil 130 is caught by the lens holder 110.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a lens driving device and a manufacturing method thereof that can be easily manufactured. Another object of the present invention is to provide a camera-equipped mobile device that facilitates manufacturing and enables cost reduction and achieves quality stability.

  In order to achieve the above-described object, the present invention provides a lens driving device including a lens holder that holds a lens, and a driving unit that linearly moves the lens holder along the optical axis direction of the lens. It has a case body that houses an electromagnetic mechanism as a driving means, and is configured so that the case body can be divided into at least two parts. A power supply member passage portion for pulling out the power supply member to the outside of the case body is provided.

  In this invention, since the two case division bodies each have a power supply member passage portion for drawing out a power supply member for supplying power to the electromagnetic mechanism to the outside of the case body, the assembly work of the members in each case division body is performed. And finally, each case division body can be integrated, and manufacture of a lens drive device becomes easy.

  It is preferable that the power feeding member passing portion is a notch that is opened in a dividing surface of the case divided body. With this configuration, it is not necessary to pass the power supply member through the hole in the manufacturing process of the lens driving device, and it is only necessary to fit the notch into the notch. Therefore, the manufacturing is facilitated and the manufacturing time can be shortened.

  The notch opened on the dividing surface of the case divided body may be communicated. With this configuration, in a lens driving device in which the power supply member also moves together with the lens holder, it is possible to ensure a space that allows the power supply member to move.

  Moreover, the notch open | released by the division surface of the case division body may shift | deviate in the circumferential direction. With this configuration, the gap around the power supply member in the notch can be reduced, and dust can be prevented from entering the case body. Furthermore, wiring mistakes of the power supply member can be reduced.

  In these inventions, it is preferable that the dividing surface of the case divided body is substantially at the center of the linear movement range of the lens holder. It is possible to share the two case divided bodies and to store the members inside the case body divided into both case divided bodies.

  The electromagnetic mechanism includes a magnet disposed around the lens holder and a coil disposed opposite to the optical axis so as to sandwich the magnet, and the power feeding member is a power feeding portion of the drive coil. A configuration can be employed. With this configuration, the electromagnetic driving mechanism of the lens driving device can be simplified.

  Another invention for achieving the above object is a method of manufacturing a lens driving device having a lens holder that holds a lens, and a driving unit that linearly moves the lens holder along the optical axis direction of the lens. A case body that houses an electromagnetic mechanism as a lens holder and driving means, and is configured so that the case body can be divided into at least two parts, which are divided into case parts, and the electromagnetic mechanism is provided in each of the two case parts. After arranging and pulling out the power feeding members for feeding power to the electromagnetic mechanism from the feeding member passing portions provided in the two case divided bodies to the outside of the two case divided bodies, the case divided bodies are integrated with each other. Yes.

  In this invention, since the electromagnetic mechanism is arranged in each case division body, the operation of outputting the power feeding member to the outside of the case body is facilitated. In addition, since the electromagnetic mechanisms are held in the respective case division bodies, the displacement of the electromagnetic mechanisms in the case body of the completed lens driving device can be suppressed.

  Another invention for achieving the above object includes a lens holder for holding a lens, a drive magnet arranged so as to surround the optical axis of the lens, a drive magnet wound around the optical axis, and a drive magnet. A method of manufacturing a lens driving device including a first driving coil and a second driving coil arranged to face each other in the optical axis direction so as to sandwich the first driving coil, the step of holding the first driving coil inside the first fixing member A step of passing the first power supply member of the first drive coil through the power supply member passage portion of the first fixing member, a step of holding the second drive coil inside the second fixing member, A step of passing the second power supply member through the power supply member passage portion of the second fixing member; and a step of joining the first fixing member and the second fixing member.

  In the present invention, since the power feeding member only needs to be passed through the wiring passage portions of the first and second fixing members, the lens driving device can be easily manufactured. Further, since the first and second drive coils are held by the respective fixing members, it is possible to suppress the displacement of the electromagnetic mechanism within the fixing member of the completed lens driving device.

  In order to achieve the above object, the camera-equipped mobile phone of the present invention has the lens driving device arranged in the camera portion. According to the present invention, it is possible to obtain a portable device with a camera that makes it easy to manufacture an internal lens driving device, enables cost reduction, and stabilizes quality due to easy work.

  ADVANTAGE OF THE INVENTION According to this invention, the lens drive device made easy and the manufacturing method can be provided. In addition, it is possible to provide a camera-equipped mobile device that can be manufactured easily and can be reduced in cost, and the stability of quality can be achieved.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a lens driving device, a manufacturing method thereof, and a camera-equipped mobile device according to the present invention will be described with reference to the drawings. Each embodiment has a configuration suitable for mounting as a camera portion of a mobile device such as a mobile phone, but may be mounted on another mobile device such as a PDA (Personal Degital Assistance).

  FIG. 1 is a cross-sectional view of a lens driving device 1 according to a first embodiment of the present invention. The lens driving device 1 includes a lens holder 10 that holds a lens 14, a driving unit that moves the lens holder 10 along the direction of the optical axis 11 of the lens 14, and a case body that houses the lens holder 10 and the driving unit. 24 is mainly composed. A lens 14 is provided inside the lens holder 10. The lens 14 is a photographic lens of a camera and is configured by combining a plurality of lenses. The upper side of FIG. 1 is the subject side lens 14a, and the lower side is the camera body side lens 14b. In the lens driving device 1, the lens 14 and the lens holder 10 that holds the lens 14 are formed of different members, but both may be integrally formed of the same member.

  The outer periphery of the lens holder 10 is formed with a large diameter on the front side and a small diameter on the rear side, and a step is formed at the boundary. A driving magnet 16 formed in a ring shape is fitted to the small-diameter portion on the rear side, and the driving magnet 16 is integrally fixed to the lens holder 10 in contact with the stepped portion described above.

  A circular incident window 18 for taking reflected light from the subject into the lens 14 is formed at the front end of the lens holder 10, that is, the end on the subject side. Although an openable / closable barrier for holding the lens is provided in front of the entrance window 18, the illustration is omitted.

  The lens holder 10 is accommodated in the case body 24. The case body 24 includes a rear first case divided body 26 that is also a cylindrical first fixing member and a front second case divided body 42 that is also a second fixing member. As shown in FIG. 1, the first and second case division bodies 26 and 42 are joined so that the cylindrical projecting portions 26 a and 42 a are engaged with each other. The 1st, 2nd case division bodies 26 and 42 can also be made into the same shape. If they have the same shape, the parts can be shared and the manufacturing cost can be reduced. In the first embodiment, the case body 24 is divided into two, but it may be divided into three or more. A portion excluding the filter 43, the image pickup device 44, the circuit board 45, the rear end member 46, and the pedestal portion 47, that is, the case body 24 and a member incorporated in the case body 24 are referred to as a case body portion.

  The first and second power supply lines 72 and 74, which are the power supply members of the first and second drive coils 28 and 30, respectively, are formed by dividing the case body 24 as shown in FIG. It is pulled out of the case body 24 from the notches 62 and 64 serving as power feeding member passage portions opened to the joint surfaces 26b and 42b of the division bodies 26 and 42 (division surfaces of the case body 24). The first and second feed lines 72 and 74 drawn out of the case body 24 are connected to a power source (not shown). In addition, it is preferable that the dividing surfaces 26 b and 42 b of the case body 24 are substantially at the center of the linear movement range of the lens holder 10. Further, in the first embodiment, the notches 62 and 64 are set at positions shifted in the circumferential direction. Therefore, when assembled, as shown in FIG. However, the overhanging portion 26a of the first case divided body 26 is closed.

  The outer periphery of the rear end portion of the lens holder 10 is fitted to the inner periphery of the rear end portion of the first case divided body 26 so that the lens 14 can move in the direction of the optical axis 11. The movement limit of the lens holder 10 to the rear side, that is, the camera body side is a position where the lens holder 10 abuts on a protruding edge 27 formed inwardly at the rear end of the first case divided body 26. FIG. 1 shows a state in which the lens holder 10 has moved to the rearmost side.

  The drive magnet 16 that operates integrally with the lens holder 10 is a front side of the inner periphery of the rear end portion of the first case divided body 26 and has a larger inner diameter than the inner periphery of the rear end portion. It is installed so as to face the inner circumference with a slight gap. The drive magnet 16 has a ring shape, and as shown in FIG. 4, the portion surrounding the central hole is magnetized to the N pole, and the entire outer peripheral portion is magnetized to the S pole. Note that this magnetization relationship may be such that NS is reversed. The drive magnet 16 is housed so as to be movable relative to the first case divided body 26 in the direction of the optical axis 11.

  A first drive coil 28 wound in a ring shape so as to face the drive magnet 16 is disposed on the inner periphery of the first case divided body 26 on the rear side of the drive magnet 16. The first drive coil The second drive coil 30 is arranged so that the drive magnet 16 is sandwiched with respect to 28. The first and second drive coils 28 and 30 have first and second feeder lines 72 and 74, respectively.

  A ring-shaped first magnetic body 32 is arranged on the rear side of the first drive coil 28. In the second case divided body 42, a second drive coil 30 wound in a ring shape and a ring-shaped second magnetic body 34 are held and fixed so as to overlap the second drive coil 30. Therefore, the first magnetic body 32 and the second magnetic body 34 are arranged outside the first drive coil 28 and the second drive coil 30 that are aligned in the direction of the optical axis 11 with the drive magnet 16 in between, respectively. Yes.

  The first and second magnetic bodies 32 and 34 are made of a washer-like ferromagnetic body, for example, a steel plate. The magnetic flux emitted from the drive magnet 16 passes through the first drive coil 28 and the first magnetic body 32 from the center side to the outer peripheral side and returns to the drive magnet 16. Further, the magnetic flux from the driving magnet 16 passes through the second magnetic body 34 and the second driving coil 30 from the center side to the outer peripheral side and reaches the driving magnet 16, and these members constitute a magnetic circuit. Has been. Therefore, the first and second drive coils 28 and 30 are located in the magnetic field formed by the drive magnet 16.

  The distance between the opposing surfaces of the first and second drive coils 28 and 30 is greater than the thickness of the drive magnet 16 in the direction of the optical axis 11, and is between the drive magnet 16 and the first drive coil 28 or the second drive coil 30. There is a gap in the direction of the optical axis 11, and the drive magnet 16 and thus the lens holder 10 integrated with the drive magnet 16 can move in the direction of the optical axis 11 within the range of the gap.

  In the state shown in FIG. 1, the magnetic attractive force generated between the drive magnet 16 and the first magnetic body 32 even when the drive magnet 16 moves rearward together with the lens holder 10 and the drive coils 28 and 30 are not energized. Is held at the normal shooting position. At this time, as shown in FIG. 1, a slight gap is generated between the first drive coil 28 and the drive magnet 16. This is because when one of the first drive coil 28 and the drive magnet 16 collides, either one or both are damaged, and the collision is prevented.

  In the state shown in FIG. 1, when a predetermined macro changeover switch (not shown) is operated, at least one of the first and second drive coils 28, 30 is energized in a predetermined direction. Depending on the direction of the magnetic field, an electromagnetic force that pushes the drive magnet 16 forward acts according to Fleming's left-hand rule, and the lens holder 10 advances forward together with the drive magnet 16. This advance amount is within the above-described gap generated between the drive magnet 16 and the first and second drive coils 28 and 30. The lens 14 moves forward together with the lens holder 10 to become a macro photographing position. Note that Fleming's left-hand rule shows the relationship of forces acting on an object that is carrying a line current when a line current flows in the magnetic field. In this embodiment, the first, Since the second drive coils 28 and 30 are both fixed, a force acts on the drive magnet 16 as a reaction.

  When the lens holder 10 moves forward, the lens holder 10 collides with the protrusion 36 of the second case divided body 42, thereby preventing the forward movement. This is the macro shooting position. The protrusion 36 preferably has a shape protruding by three points rather than a circumferential shape for the purpose of improving accuracy. The lens 14 at the macro photographing position is held by the magnetic attractive force generated between the drive magnet 16 and the second magnetic body 34 even when the first and second drive coils 28 and 30 are not energized. Also at this time, a slight gap is generated between the second drive coil 30 and the drive magnet 16. This is also for preventing the second drive coil 30 and the drive magnet 16 from colliding and damaging them.

  The electromagnetic force generated during the forward movement is generated in such a direction that the drive magnet 16 is moved forward when the first drive coil 28 is energized, and the drive magnet 16 is moved forward when the second drive coil 30 is energized. Generate in the direction to move to. Both the first and second drive coils 28 and 30 may be energized simultaneously, or one of them may be energized.

  To switch from the macro shooting position to the normal shooting position, the changeover switch is switched to the normal shooting position. By this switching, at least one of the first and second drive coils 28 and 30 is energized in the opposite direction, and the drive magnet 16 is moved backward by Fleming's left hand rule according to the direction of this current and the direction of the magnetic field by the drive magnet 16. The electromagnetic force in the direction of pulling back is activated, and the lens holder 10 moves backward together with the drive magnet 16 to reach the normal photographing position shown in FIG.

  On the rear side along the optical axis 11 of the lens driving device 1, an image sensor case 47 that houses the filter 43, the image sensor 44, the circuit board 45, and the like is disposed. The filter 43 is for cutting light of a predetermined wavelength corresponding to the detection wavelength of the image sensor 44. The image sensor 44 is composed of a complementary metal oxide semiconductor (CMOS), and sends the detection signal to the circuit board 45. An image signal serving as a detection signal is sent via a circuit board 45 to a control unit composed of a microcomputer (not shown). In addition to the CMOS, a CCD, a VMIS, or the like can be used as the image sensor 44.

  Next, a manufacturing method of the lens driving device 1 according to the first embodiment will be described with reference to FIG. First, the first magnetic body 32 and the first drive coil 28 are sequentially arranged on the first case divided body 26. At this time, the first power supply line 72 of the first drive coil 28 passes through the notch 62 as the power supply member passing portion of the first case divided body 26 and is drawn out of the case body 24. In the first embodiment, the feeding member passage portion is the notches 62 and 64, but the feeding member passage portion is formed in the holes 67, 67, 68, and 68 as in the other embodiment shown in FIG. It is good.

  Similarly, the second magnetic body 34 and the second drive coil 30 are also sequentially arranged on the second case divided body 42. Thereafter, the lens holder 10 is accommodated in the first and second case division bodies 26 and 42 so as to sandwich the lens holder 10 to which the drive magnet 16 is fixed in advance around the first and second case division bodies 26 and 42. . And the 1st, 2nd case division bodies 26 and 42 are joined and integrated.

  The integration of the first and second case segments 26 and 42 is provisional at this point. The temporarily integrated case body 24 (the lens holder 10 is already assembled) is fixed to the pedestal 47 with an adhesive 48 or the like as shown in FIG. This fixing is performed after adjusting the distance between the image sensor 44 and the lens 14. That is, when the lens 14 is in the normal photographing position, the case body 24 (first case division body 26) is fixed to the pedestal portion 47 at the optimal position by adjusting the image so as to be appropriate. The second case segment 42 is moved relative to the first case segment 26 so that the macro image is optimal when the macro shooting position is set. And the 2nd case division body 42 is finally fixed with an adhesive etc. in the position which obtains an optimal macro image, and the 1st, 2nd case division bodies 26 and 42 are integrated completely.

  Further, the notches 62 and 64 of the first and second case division bodies 26 and 42 are displaced in the circumferential direction in order to suppress the entry of dust into the case body 24, but the present invention shown in FIG. As in the second embodiment, the notches 62 and 64 opened to the dividing surfaces of the first and second case divided bodies 26 and 42 may be communicated with each other. In the first embodiment, the driving magnet 16 is arranged on the movable side and the driving coils 28 and 30 are arranged on the fixed side. However, in the second embodiment, the moving magnet is arranged on the movable side. In this lens driving device, the driving coil is a moving coil type in which a driving magnet is arranged on the fixed side. In this case, the feed line 92 of the movable drive coil can move through the notches 62 and 64 communicated as shown by arrows in FIG.

  The moving coil type lens driving device can employ the following configuration, for example. The lens holder 10 includes a drive coil that can move in the direction of the optical axis 11 together with the lens 14 and a magnetic body, and is arranged in the direction of the optical axis 11 of the lens 14 inside the case body 24 with the drive coil interposed therebetween. The first drive magnet and the second drive magnet are configured, and the drive magnet and the magnetic circuit are configured, and when the energization to the drive coil is stopped, one of the first drive magnet and the second drive magnet and the magnetic body The moving body is held at a predetermined position by magnetic attraction, and the lens holder 10 is moved between the first drive magnet and the second drive magnet by energizing the drive coil.

  Next, a case body portion of a lens driving device according to a third embodiment of the present invention will be described with reference to FIG. In the present embodiment, the case body 24 is divided into three, and the first and second case divided bodies 26 and 42 are joined so as to sandwich the intermediate case divided body 53. The third embodiment is different from the first embodiment only in the shapes of the first and second case division bodies 26 and 42 constituting the case body 24 and the intermediate case division body 53. Are the same. In the third embodiment, by using the intermediate case divided body 53, the notches 62 and 64 can be made small even when the positions of the first feeder 72 and the second feeder 74 are separated. it can. As a result, the clearance around the wiring is also reduced, and entry of dust into the case body 24 can be suppressed.

  Next, a case body portion of a lens driving device according to a fourth embodiment of the present invention will be described with reference to FIG. In the present embodiment, the second case divided body 42 has a protrusion 65 corresponding to the notch 62 formed in the first case divided body 26, and the first case divided body 26 includes the second case divided body 26. A protrusion 63 corresponding to the notch 64 formed in the body 42 is provided, and the first case divided body and the rear second case divided body 42 are joined so as to be fitted by the corresponding notch and protrusion, respectively. Has been. According to the present embodiment, the gaps around the first and second power supply lines 72 and 74 of the notches 62 and 64 can be reduced, and dust can be prevented from entering the case body 24.

  Each embodiment described above is a preferred example of the present invention, but various modifications can be made without departing from the gist of the present invention. For example, the present invention is not limited to switching between normal shooting and macro shooting, but can be applied to any lens that needs to switch the position of the lens 14 to two or three or more positions. Specifically, as a collapsible mechanism of a collapsible camera that houses a lens barrel in the body of a camera or portable device when not in use, or a camera that can switch the focal length between a short focal position and a long focal position. It can also be applied to a focal length switching mechanism. Furthermore, the present invention can be applied not only to a lens driving device that switches between a macro photographing position and a normal photographing position, but also to a lens driving device having a zoom photographing function that independently drives two lenses with a drive motor or the like.

  The step of integrating the first and second case divided bodies 26 and 42 is formed at the joint as shown in the external view and the sectional view of the vicinity of the joint (split surface) of the case body 24 in FIG. The recessed portion 80 may be filled with an adhesive. Further, as shown in the external view and the sectional view of the vicinity of the joint (divided surface) of the case body 24 in FIG. 9, the first and second case segments 26 are welded with the convex portions 90 formed in the joint. , 42 may be integrated. The convex portion 90 may be configured to have a semicircular cross-sectional shape as shown in FIG. 9, but may have a quadrangular cross-sectional case shape. In addition, according to the manufacturing method of the present invention, each case divided body is assembled and finally the case divided bodies are integrated, so that the power feeding member can be easily pulled out of the case divided body. it can.

It is sectional drawing which shows the lens drive device which concerns on the 1st Embodiment of this invention. It is an external view which shows the case body part of the lens drive device which concerns on the 1st Embodiment of this invention. It is an exploded sectional view showing a case body part of a lens drive device concerning a 1st embodiment of the present invention. It is a top view which shows the drive magnet which concerns on the 1st Embodiment of this invention. It is an external view which shows the case body part of the lens drive device which concerns on the 2nd Embodiment of this invention. It is an external view which shows the case body part of the lens drive device which concerns on the 3rd Embodiment of this invention. It is an external view which shows the case body part of the lens drive device which concerns on the 4th Embodiment of this invention. It is a figure which shows the other example of the method of integrating the case division body of the lens drive device which concerns on embodiment of this invention, (A) is an external view vicinity of a division surface, (B) is the division surface vicinity. It is sectional drawing. It is a figure which shows the other example of the method of integrating the case division body of the lens drive device which concerns on embodiment of this invention, (A) is an external view vicinity of a division surface, (B) is the division surface vicinity. It is a sectional view It is an external view which shows the case body part of the lens drive device which concerns on other embodiment of this invention. It is sectional drawing which shows the lens drive device described in the previous application by the present applicant. It is an external view which shows the lens drive device described in the previous application by the present applicant. FIG. 12 is an exploded cross-sectional view illustrating a case body portion of the lens driving device in FIG. 11.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lens drive device 10 Lens holder 12 Lens barrel 14 Lens 14a Subject side lens 14b Camera body side lens 14c Space | interval holding member 14d Position fixing member 16 Drive magnet (a part of drive means)
18 entrance window 20 front end surface 24 case body 26 first case division body 26b division surface 28 first drive coil (part of drive means)
30 Second drive coil (part of drive means)
32 1st magnetic body 34 2nd magnetic body 36 Protruding part 42 Front case divided body 42b Dividing surface 43 Filter 44 Imaging element 45 Circuit board 46 Rear end member 47 Base part 53 Intermediate case divided body 62, 64 Notch 72 First 1 Feed line (feed member)
74 Second feeder (feeding member)
92 Feeder

Claims (9)

A lens holder for holding the lens;
Drive means for linearly moving the lens holder along the optical axis direction of the lens;
A lens driving device comprising:
A case body that houses the lens holder and an electromagnetic mechanism as the driving means;
The case body is configured to be divided into at least two, and these are case divided bodies.
2. The lens driving device according to claim 1, wherein the two case divided bodies have a power supply member passage portion for drawing out a power supply member for supplying power to the electromagnetic mechanism to the outside of the case body.   The lens driving device according to claim 1, wherein the power feeding member passage portion is a notch opened in a dividing surface of the case divided body.   The lens driving device according to claim 2, wherein the notch opened in the dividing surface of the case divided body communicates.   The lens driving device according to claim 2, wherein the notch opened in the dividing surface of the case divided body is shifted in the circumferential direction.   5. The lens driving device according to claim 1, wherein a dividing surface of the case divided body is substantially at a center of a linear movement range of the lens holder. The electromagnetic mechanism includes a magnet disposed around the lens holder so as to surround the lens holder, and a drive coil disposed so as to face the optical axis so as to sandwich the magnet.
The lens driving device according to claim 1, wherein the power supply member is a power supply unit of the drive coil. A lens holder for holding the lens;
Drive means for linearly moving the lens holder along the optical axis direction of the lens;
A method of manufacturing a lens driving device having
A case body that houses the lens holder and an electromagnetic mechanism as the driving means;
The case body is configured to be divided into at least two, and these are case divided bodies.
The electromagnetic mechanism is disposed in each of the two case divided bodies, and a power supply member for supplying power to the electromagnetic mechanism is provided from each of the two case divided bodies through a power supply member passing portion provided in the two case divided bodies. After pulling out,
A method of manufacturing a lens driving device, wherein the case divided bodies are integrated. A lens holder for holding the lens;
A drive magnet arranged to surround the optical axis of the lens;
A first drive coil and a second drive coil wound so as to surround the optical axis and disposed opposite to each other in the optical axis direction so as to sandwich the drive magnet;
A method of manufacturing a lens driving device comprising:
Holding the first drive coil inside the first fixing member;
Passing the first power supply member of the first drive coil through the power supply member passing portion of the first fixing member;
Holding the second drive coil inside the second fixing member;
Passing the second power supply member of the second drive coil through the power supply member passage portion of the second fixing member;
Joining the first fixing member and the second fixing member;
A method for manufacturing a lens driving device.   A camera-equipped mobile device, wherein the lens driving device according to claim 1 is disposed in a camera portion.

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