JP6719699B2 - Lens holder, lens driving device, camera device, and electronic device - Google Patents

Description

The present invention relates to a lens holder in a voice coil motor type lens driving device, which has a predetermined length in the vertical direction and a coil is attached to the outer periphery, a lens driving device including the lens holder, a camera device, Also, the present invention relates to electronic devices.

2. Description of the Related Art A lens drive device of a voice coil motor type has been conventionally used for an autofocus camera and an electronic device with a camera. The lens driving device adjusts the position of the lens in the optical axis direction or the like to perform focusing or zooming.

In a voice coil motor type lens driving device, generally, a structure as shown in FIG. 9A is adopted. The lens driving device 1 illustrated in FIG. 9A includes a frame 2, a yoke 3, a lens holder 4, a coil 5, a magnet 6, a front spring 7, a rear spring 8 and a base 9.

The yoke 3 is supported by the base 9, and the magnet 6 is attached to the yoke 3. A lens (not shown) is supported by the lens holder 4 having a predetermined length in the vertical direction. A coil 5 is attached to the outer periphery of the lens holder 4 so as to face the magnet 6 described above.

The front spring 7 and the rear spring 8 sandwich the lens holder 4 from above and below in the optical axis direction, whereby the lens holder 4 is supported movably in the vertical direction (optical axis direction) and the like.

Thrust is generated by controlling the current applied to the coil 5, and the lens holder 4 and the lens supported thereby are moved. As a result, the lens (not shown) moves to a position that balances with the restoring force of the front spring 7 and the rear spring 8, and focusing and zooming are performed.

9(b) and 9(c) illustrate a conventional method of attaching a coil to the outer circumference of the lens holder 4, which is generally performed.

In the method shown in FIG. 9B, spacer portions 4a and 4b are formed on the outer peripheral surface of the lens holder 4 and serve as protrusions for positioning the coil 5 in the height direction. The coil 5 is wound in the circumferential direction of the lens holder 4 with reference to the spacer portions 4a and 4b.

Here, the spacer portions 4 a and 4 b are formed to have the same height as the coil 5 in the vertical direction. Therefore, there is a problem that the winding width cannot be adjusted due to the influence of the wire diameter of the coil 5 and the dimensional error of the lens holder 4, and the aligned winding is difficult.

The method shown in FIG. 9C is aimed at solving this problem, in which the winding width adjusting jig 10 is inserted inside the spacer portion 4a and the coil 5 is wound with the winding width adjusting jig 10 as a reference. Is to do.

By doing so, it is possible to solve the problem that it is difficult to perform aligned winding. However, after removing the winding width adjusting jig 10 as shown in FIG. 9D, the spacer portion 4a and the coil 5 after winding are removed. A gap will be formed between them. Due to the presence of this gap, there is a problem that the coil 5 wound around the lens holder 4 is rattled as shown by an arrow 11.

Since the lens driving device 1 is a fine device, it is not easy to mount the lens driving device 1 with high accuracy and to secure a stable mounting state. Therefore, a proposal has been made for the purpose of making it possible to stably support the coil while being accurately positioned (for example, Patent Document 1).

However, it was not a proposal for facilitating the aligned winding of the coil around the lens holder and suppressing the coil wound around the lens holder from rattling.

JP, 2007-121695, A

According to the present invention, it is possible to easily perform the aligned winding of the coil around the lens holder in the lens driving device of the voice coil motor type, which has a predetermined length in the up-down direction and the coil is mounted on the outer periphery, and An object of the present invention is to provide a lens holder that can prevent the coil wound around the lens holder from rattling, a lens driving device, a camera device, and an electronic device that employ the lens holder.

The invention of claim 1 is
A lens holder in a voice coil motor type lens driving device, which has a predetermined length in the optical axis direction and has a coil attached to the outer periphery,
A portion formed at a predetermined position in the circumferential direction of the outer circumferential wall of the lens holder around which the coil is wound, and a portion having a different outer circumferential diameter in the optical axis direction,
A collar portion protruding outward from a peripheral wall of the lens holder in a radial direction orthogonal to the optical axis direction,
The large-diameter portion of the portion having a different outer peripheral diameter in the optical axis direction is a portion protruding from the outer peripheral wall of the lens holder to the outer side in the radial direction,
The large diameter portion, with respect to the collar portion, is disposed at a predetermined interval in the front end side of the optical axis direction,
Lens characterized by rear end side in the optical axis direction of the coil abuts the front side in the optical axis direction of the flange portion, front end side in the optical axis direction of the coil is positioned in the large diameter portion It is a holder.

According to the present invention, it is possible to easily perform the aligned winding of the coil around the lens holder in the lens driving device of the voice coil motor type having the predetermined length in the vertical direction and having the coil mounted on the outer periphery. Further, it is possible to provide a lens holder that can prevent the coil wound around the lens holder from rattling, a lens driving device, a camera device, and an electronic device that employ the lens holder.

The exploded perspective view showing an example of the lens drive device of the present invention which employs the lens holder of the present invention. FIG. 2A is a plan view of a lens driving device according to an embodiment of the present invention, and FIG. 2B is a view showing an end surface taken along the line AA in FIG. (A) is a side view of the lens holder which concerns on one Embodiment of this invention, (b) is a perspective view. The top view of the lens holder concerning one embodiment of the present invention. The expanded side view which abbreviate|omitted one part showing the outer peripheral wall part of the lens holder which concerns on one Embodiment of this invention. FIG. 3 is a perspective view showing a state where a coil is attached to the lens holder according to the embodiment of the present invention, and a perspective view showing a state where a section of the attached coil is broken and a coil cross section is shown. FIG. 7A is an enlarged side view in which a part showing a tapered portion of a lens holder according to an embodiment of the present invention is omitted, and FIG. 7B is a perspective view showing a portion shown in FIG. 7A. (A)-(d) is the expanded side view which abbreviate|omitted one part showing the outer peripheral wall part of the lens holder which concerns on other embodiment of this invention. (A) Sectional drawing explaining an example of the conventional lens drive device, (b)-(d) The figure explaining the conventional system which attaches a coil to a lens holder.

INDUSTRIAL APPLICABILITY The present invention is adopted in an electronic device such as an autofocus camera incorporating a VCM type lens driving device, a mobile phone equipped with such an autofocus camera, a multifunctional mobile phone, and the like.

An example of the lens holder of the present embodiment and the lens driving device of the present embodiment including the same will be described with reference to FIGS. 1 and 2 attached herewith.

FIG. 1 is an exploded perspective view showing an example of the lens driving device of the present embodiment in which the lens holder 4 of the present embodiment is adopted, and FIG. 2A is a plan view of the lens driving device of the present embodiment. FIG. 2B is a view showing an end surface taken along line AA in FIG.

The lens driving device 1 of the present embodiment is, for example, a lens driving device for an autofocus camera incorporated in an electronic device such as a mobile phone or a multifunctional mobile phone.

In FIG. 2B, the upper side is the front side in the optical axis direction, and the lower side is the rear side in the optical axis direction.

The lens driving device 1 illustrated in FIGS. 1 and 2 includes a frame 2, a yoke 3, a lens holder 4, a coil 5, a magnet 6, a front spring 7, a rear spring 8 and a base 9.

In the illustrated example, the yoke 3 is annular and is fixedly arranged between the base 9 and the frame 2.

A front spring 7 and a rear spring 8 supported by the frame 2 and the base 9 respectively sandwich the lens holder 4 from above and below in the optical axis direction. As a result, the lens holder 4 is supported so as to be movable in the vertical direction (optical axis direction) and the like.

The magnet 6 is arranged inside the outer peripheral wall 3b of the yoke 3. In the illustrated embodiment, the annular yoke 3 is a substantially rectangular tube-shaped body having a substantially rectangular shape in a plan view. The four magnets 6 are arranged inside the outer peripheral walls 3b at the four corners of the yoke 3, respectively.

The lens holder 4 having a predetermined length in the vertical direction (optical axis direction) supports a lens (not shown) inside thereof. Further, the coil 5 is mounted on the outer periphery of the lens holder 4 so as to face the four magnets 6.

In the illustrated embodiment, the inner circumference side of each magnet 6 has an arc shape along the outer circumference of the lens holder 4, corresponding to the lens holder 4 having a substantially cylindrical shape.

Similar to the conventional VCM type lens driving device described with reference to FIG. 9A, the lens driving device 1 of the present embodiment generates thrust by controlling the current applied to the coil 5, and the lens holder 4 and The lens supported by this is moved. As a result, the lens moves to a position that balances the restoring force of the front spring 7 and the rear spring 8, and focusing and zooming are performed.

The lens holder 4 of the present embodiment is provided with portions having different outer diameters in the vertical direction (optical axis direction) at predetermined positions in the circumferential direction of the outer peripheral wall of the lens holder 4 around which the coil 5 is wound. Further, the lens holder 4 is provided with a collar portion 22 protruding outward from the outer peripheral wall in the radial direction. A predetermined interval is provided in the up-down direction (optical axis direction) between the flange portion 22 and the large-diameter portion of the portion of the outer peripheral wall of the lens holder 4 having different outer diameters in the up-down direction.

The following structure can be exemplified as a form of a portion of the outer peripheral wall of the lens holder 4 at a predetermined position in the circumferential direction in which the outer diameter is different between the vertical directions (optical axis directions). However, the structure is not limited to this.

A structure in which a large diameter portion and a small diameter portion having a diameter smaller than that of the large diameter portion are formed between the lens holder 4 in the vertical direction (optical axis direction).

A large diameter portion is provided on the upper end side or the lower end side in the vertical direction (optical axis direction) of the lens holder 4, and a small diameter portion having a diameter smaller than the large diameter portion is provided between the upper end side and the lower end side in the vertical direction (optical axis direction). The structure that is being formed.

The structures illustrated in FIG. 5 and FIGS. 8A to 8D respectively represent examples of these.

In the structure shown in FIG. 5, a taper portion 21a is formed on the upper side of the flange portion 22 so that the diameter gradually increases from the small diameter portion to the large diameter portion. In the structure shown in FIG. 5, a small-diameter portion is formed on the lower end side in the vertical direction (optical axis direction) and a large-diameter portion is formed on the upper end side, and a taper portion 21a whose diameter gradually increases from the small-diameter portion to the large-diameter portion is formed. Has been formed. Further, the flange portion 22 protruding radially outward from the outer peripheral wall of the lens holder 4 is spaced in the vertical direction (optical axis direction) from the large diameter portion formed on the upper end side of the tapered portion 21a. It is formed in the open position.

In the structure shown in FIG. 8A, large diameter portions 26a and 26b are formed on the upper end side and the lower end side in the vertical direction (optical axis direction) on the upper side of the collar portion 22, and the large diameter portions 26a and 26b are formed between the upper end side and the lower end side. A small diameter portion 25 having a smaller diameter than the diameter portions 26a and 26b is formed. Then, a tapered portion is formed in which the diameter gradually increases from the small diameter portion 25 in the center toward the large diameter portions 26a and 26b on the upper end side and the lower end side. The collar portion 22 protruding outward in the radial direction from the outer peripheral wall of the lens holder 4 is formed at a position spaced apart in the vertical direction (optical axis direction) from the large diameter portion 26a on the upper end side.

In the structure shown in FIG. 8B, the upper end side in the vertical direction (optical axis direction) is the large diameter portion 28, the lower end side is the small diameter portion 27 on the upper side of the collar portion 22, and the step portion 29 is formed between the two differences. There is. The collar portion 22 protruding outward in the radial direction from the outer peripheral wall of the lens holder 4 is formed at a position spaced apart in the vertical direction (optical axis direction) from the large diameter portion 26a on the upper end side.

In the structure shown in FIG. 8C, the protrusions (large diameter portion) 30 and the groove portions (small diameter portion) 31 are formed on the upper side of the collar portion 22 alternately in the vertical direction (optical axis direction). The coil wire is housed in the groove portion (small diameter portion) 31 one by one. The collar portion 22 protruding radially outward from the outer peripheral wall of the lens holder 4 is formed at a position spaced apart in the vertical direction (optical axis direction) from the protrusion portion (large diameter portion) 30.

In the structure shown in FIG. 8D, protrusions (large diameter portions) 32a and 32b are formed on the upper side and the lower side in the vertical direction (optical axis direction) on the upper side of the collar portion 22, and these protrusions 32a and 32b are formed. An outer peripheral wall of the enclosed lens holder 4 is formed on a flat surface (small diameter portion) 33 having a smaller radial size than the tips of the protrusions 32a and 32b. The flange portion 22 protruding radially outward from the outer peripheral wall of the lens holder 4 is vertically arranged between the protrusion 32a on the upper end side corresponding to the large diameter portion or the protrusion 32b on the lower end side corresponding to the large diameter portion. It is formed at positions spaced apart in the (optical axis direction).

In any of the structures illustrated in FIGS. 5 and 8A to 8D, the lens holder 4 has a vertical direction (optical axis direction) at a predetermined position in the circumferential direction of the outer peripheral wall around which the coil 5 is wound. ) Between different outer diameters. Therefore, the winding width during winding does not depend on the spacer portion for positioning the height position in the vertical direction of the coil 5 as in the conventional method described in FIGS. It will be possible to do.

Further, in any of the structures illustrated in FIGS. 5 and 8A to 8D, the large diameter portion and the collar portion 22 of the portion having the different outer peripheral diameter between the vertical direction (optical axis direction). And are arranged at a predetermined interval in the vertical direction. With such a structure, as illustrated in FIG. 5, when the coil 5 is wound around the outer peripheral wall of the lens holder 4, one side of the wound coil 5 in the up-down direction (optical axis direction). The coil 5 can be wound around the outer peripheral wall of the lens holder 4 by abutting the end portion thereof on the collar portion 22. In the structure illustrated in FIG. 5 and FIGS. 8A to 8D, the lower end side of the coil 5 wound around the outer peripheral wall of the lens holder 4 is brought into contact with the upper side surface of the collar portion 22, and the upper end side is attached to the collar portion. It is located in the large-diameter portion that is spaced apart in the vertical direction with respect to 22.

Therefore, the coil 5 wound in such a structure can suppress rattling in the vertical direction (optical axis direction) after aligned winding.

2 to 6 illustrate an example of the lens driving device of the present embodiment including the lens holder 4 of the present embodiment that employs the structure of FIG. 5 described above.

In the illustrated embodiment, tapered portions 21a, 21b, 21c and 21d are formed at four locations in the circumferential direction of the lens holder. In the present specification, the tapered portions 21a to 21d may be collectively referred to as the tapered portion 21.

The lens holder 4 has a collar portion 22 on its outer peripheral wall. In the illustrated embodiment, a taper portion 21 having a diameter gradually increasing from the small diameter portion on the lower end side to the large diameter portion on the upper end side in the vertical direction of the lens holder 4 is formed and wound around the outer peripheral wall of the lens holder 4. The lower end of the coil 5 in the vertical direction is mounted on the collar portion 22.

Further, in the illustrated embodiment, the tapered portion 21 is provided at a predetermined position in the circumferential direction of the outer peripheral wall of the lens holder 4, and the outer periphery of the projecting portions 20a, 20b, 20c, 20d that project outward in the radial direction. Is formed on the surface. In addition, in this specification, the protrusions 20 a to 20 d may be collectively referred to as the protrusion 20.

The circumferential edges 20e and 20f of the protrusion 20a extend in the vertical direction (optical axis direction) at radial positions at the same distance from the center of the lens holder 4, as shown in FIG. This is the same for the other protrusions 20b, 20c, 20d, and the edge 20e, 20f, 20g, 20h, 20i, 20J, 20k, 20l in the circumferential direction of each protrusion 20 is the lens holder 4. It extends in the vertical direction (optical axis direction) at the same radial position from the center of the.

As shown in the drawing, the tapered portion 21 is formed on the outer peripheral surface of the projecting portion 20, and the projecting portion 20 is provided with the both end edges in the circumferential direction of the above-described form. The state shown in FIG.

FIG. 6 is a perspective view showing a state where the coil 5 is attached to the lens holder 4, and is a view for explaining a state in which the attached coil 5 is cut away to show a coil cross section.

The coil portion 5a of the coil 5 mounted on the lens holder 4 is between the taper portion 21d formed on the outer peripheral surface of the protruding portion 20d and the taper portion 21a formed on the outer peripheral surface of the protruding portion 20a. Is the part that exists in. In the coil cross section 5f of the coil portion 5a, the edge 20l of the protrusion 20d and the edge 20e of the protrusion 20a both extend in the vertical direction at the same radial position from the center of the lens holder 4. Therefore, it is upright as shown in FIG.

On the other hand, the coil cross section 5g of the coil portion 5b attached to the tapered portion 21a formed on the outer peripheral surface of the protruding portion 20a is inclined along the inclined surface of the tapered portion 21a.

Similarly, between the tapered portion 21b formed on the outer peripheral surface of the protruding portion 20b and the tapered portion 21c formed on the outer peripheral surface of the protruding portion 20c in the coil 5 mounted on the lens holder 4. In the coil cross section 5i of the existing coil portion 5e, the end edge 20h of the protruding portion 20b and the end edge 20i of the protruding portion 20c are both radial positions at the same distance from the center of the lens holder 4, and the vertical direction Since it extends in the vertical direction, it stands upright as shown in FIG.

On the other hand, the coil cross section 5h of the coil portion 5d mounted on the tapered portion 21b formed on the outer peripheral surface of the protruding portion 20b is inclined along the inclined surface of the tapered portion 21b.

In the lens holder of the present embodiment, the lens holder 4 is wound around the lens holder 4 at a predetermined position in the circumferential direction of the outer peripheral wall of the lens holder 4 in which portions having different outer diameters are formed in the vertical direction (optical axis direction). The cross section of the coil 5 is inclined with respect to the direction in which the optical axis extends. However, since the tapered portion 21 is formed on the outer peripheral surface of the projecting portion 20 and the projecting portion 20 is provided with the both end edges in the circumferential direction of the above-described form, it is mounted on the lens holder 4 at other circumferential locations. The cross section of the coil 5 thus formed is upright in line with the direction in which the optical axis extends.

Further, in FIG. 6, a gap 23 is formed between the coil portion 5 a, the coil portion 5 c, the coil portion 5 e and the outer peripheral wall of the lens holder 4. Then, as shown in FIG. 2B, when the yoke 3 is provided with the inner peripheral wall 3a inside in the radial direction, the yoke 3 is assembled in the state where the lens driving device 1 is assembled as shown in FIG. The inner peripheral wall 3a is inserted into this gap 23.

Thus, even when the inner peripheral wall 3a of the yoke 3 is inserted into the gap 23, when the coil 5 is energized to move the lens holder 4 and the lens supported by the coil 5, the movement is performed with desired precision. Can be done.

The protrusion 20 and the taper portion 21 formed on the outer peripheral surface of the protrusion 20 have a cross-section of the coil 5 in consideration of the size of the region of the coil 5 which is upright in the direction in which the optical axis extends. It is desirable that the lens holder 4 is arranged at a predetermined interval in the outer circumferential direction. In the illustrated embodiment, the protrusions 20 are arranged at four positions at equal intervals in the circumferential direction of the outer circumference of the lens holder 4.

Circumferential edges 21e, 21f, 21g, 21h, 21i, 21J, 21k, and 21l of each tapered portion 21 and circumferential edges 20e, 20f, 20g, 20h, 20i, 20J, 20k of each protruding portion 20. , 20l are preferably chamfered into R-faces as shown in FIG.

Thereby, when the coil 5 is wound around the lens holder 4, the bending damage received when the coil comes into contact with these edges can be reduced.

In the illustrated embodiment, one taper portion 21 is formed on the outer peripheral surface of one protruding portion 20, but a plurality of taper portions are formed on the outer peripheral surface of one protruding portion 20 at predetermined intervals in the circumferential direction. It is also possible to adopt a structure in which the portion 21 is formed.

7A and 7B are an enlarged side view and a perspective view in which a part of the taper portion 21 of the lens holder 4 including the taper portion 21 described with reference to FIGS. 2 to 6 is omitted. It is a figure.

As shown in FIGS. 7A and 7B, in the lens holder 4 of the present embodiment, the collar portion 22 provided on the outer peripheral wall of the lens holder 4 has a predetermined length in the circumferential direction of the outer peripheral wall of the lens holder 4. The notch 23a is provided at the position.

The collar portion 22 includes a collar taper portion 22b in which the upper side surface 22a of the collar portion 22 is inclined downward as it goes to the cutout portion 23a.

When the coil 5 is wound around the lens holder 4, the flange taper portion 22b is used as a taper portion at the start of winding to reduce the load of bending the coil wire at the start of winding and to make a round around the outer circumference of the lens holder 4. The second row can be entered straight. This makes it possible to perform the aligned winding more easily and more accurately.

From the viewpoint of making the coil cross section upright between the circumferentially adjacent projections 20 using the structure of the circumferential edge of each projection 20 described above, the notch 23a is provided in the lens holder 4. It is desirable to form it at a position where the tapered portion 21 is provided in the circumferential direction. Also, from the viewpoint of ease of manufacturing when the lens holder 4 is manufactured by a mold, the cutout portion 23a should be formed at a position where the tapered portion 21 is arranged in the circumferential direction of the lens holder 4. Is desirable.

As described above, according to the lens holder 4 of the present embodiment, a portion having a different outer peripheral diameter is formed at a predetermined position in the peripheral direction of the outer peripheral wall thereof in the vertical direction (optical axis direction). Therefore, the winding width during winding does not depend on the spacer portion for positioning the height position in the vertical direction of the coil 5 as in the conventional method described in FIGS. It will be possible to do. Further, in the coil 5 wound in such a structure, a portion having a different outer peripheral diameter is formed in the vertical direction (optical axis direction) of the lens holder, and between the collar portion 22 and the large diameter portion. Since the predetermined intervals are provided, it is possible to suppress rattling in the vertical direction (optical axis direction) after the aligned winding.

Therefore, according to the lens driving device 1 of the voice coil motor type including the lens holder 4 of the present embodiment, it is possible to move the lens holder 4 more precisely, and the coil 5 rattles during use. It is possible to provide a lens drive device that is less likely to occur.

Further, according to a camera device such as an autofocus camera including the lens driving device of the present embodiment, an electronic device such as a mobile phone, a multifunctional mobile phone, or the like including the camera device, It is possible to provide an electronic device that enables a more precise movement of the lens holder and is less likely to cause a problem such as rattling of the coil 5 during use.

The preferred embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the above-described embodiments, and various modifications can be made within the technical scope understood from the description of the claims. Can be changed to.

For example, a portion having different outer diameters in the vertical direction (optical axis direction) may be provided over the entire circumference of the lens holder 4 in the circumferential direction. Further, the collar portion 22 may be provided on the upper side of the lens holder 4 and the coil 5 may be provided on the lower side thereof. Further, in the circumferential direction, the position of the collar portion 22 and the position of the portion having a different outer peripheral diameter between the vertical direction (optical axis direction) may not match.

1 Lens Driving Device 2 Frame 3 Yoke 4 Lens Holder 5 Coil 6 Magnet 7 Front Spring 8 Rear Spring 9 Base 25 Small Diameter 26a, 26b Large Diameter 27 Small Diameter 28 Large Diameter 29 Step 30 Protrusion 31 Groove 32a, 32b Protrusion 33 Flat surface 21 21a, 21b, 21c, 21d Tapered portion 22 Collar portion 20, 20a, 20b, 20c, 20d Projection portions 20e to 20l End edges 5a, 5b of the projection portion in the circumferential direction 5f, 5g, 5i 5h Coil cross-sections 21e to 21l of the coil portion 23a, 23b, 23c, 23d in the circumferential direction of the taper portion Notch portion 22a provided on the collar portion Upper surface 22b of the collar portion Tapered portion of the collar portion

Claims (11)

A lens holder in a voice coil motor type lens driving device, which has a predetermined length in the optical axis direction and has a coil attached to the outer periphery,
A portion formed at a predetermined position in the circumferential direction of the outer circumferential wall of the lens holder around which the coil is wound, and a portion having a different outer circumferential diameter in the optical axis direction,
A collar portion protruding outward from a peripheral wall of the lens holder in a radial direction orthogonal to the optical axis direction,
The large-diameter portion of the portion having a different outer peripheral diameter in the optical axis direction is a portion protruding from the outer peripheral wall of the lens holder to the outer side in the radial direction,
The large diameter portion, with respect to the collar portion, is disposed at a predetermined interval in the front end side of the optical axis direction,
Lens characterized by rear end side in the optical axis direction of the coil abuts the front side in the optical axis direction of the flange portion, front end side in the optical axis direction of the coil is positioned in the large diameter portion holder. The portion having a different outer peripheral diameter in the optical axis direction has a large-diameter portion and a small-diameter portion having a smaller diameter than the large-diameter portion formed side by side in the optical axis direction. The lens holder described in 1. Portion outside diameter is different in the optical axis direction, the large-diameter portion before the end side and rear end side in the optical axis direction, from the large-diameter portion between the front end side and rear end side in the optical axis direction The lens holder according to claim 1, comprising a small diameter portion having a small diameter. The lens holder according to claim 2 or 3, wherein a taper portion whose diameter gradually increases from the small diameter portion toward the large diameter portion is formed. The taper portion is provided at a predetermined position in the circumferential direction of the outer peripheral wall of the lens holder and is formed on the outer circumferential surface of the projecting portion projecting outward in the radial direction, and both ends of the projecting portion in the circumferential direction. The lens holder according to claim 4, wherein the edge extends in the optical axis direction at a radial position at the same distance from the center of the lens holder. The collar portion is provided with at least one notch portion at a predetermined position in the circumferential direction of the outer peripheral wall, and the collar portion is inclined so that the front side surface faces the rear side toward the notch portion. The lens holder according to any one of claims 1 to 5, further comprising a tapered portion. The collar portion is provided with a cutout portion at the predetermined position in the circumferential direction of the outer peripheral wall of the lens holder in which portions having different outer diameters in the optical axis direction are formed. The lens holder according to claim 6. The lens holder according to any one of claims 1 to 7, wherein a winding start of the coil around the outer peripheral wall of the lens holder is on the flange portion side. A voice coil motor type lens driving device comprising the lens holder according to any one of claims 1 to 8. A camera device comprising the lens driving device according to claim 9. An electronic device comprising the lens driving device according to claim 9.

Images