TWI499820B - Lens focusing device - Google Patents

Description

Lens focusing device

The present invention relates to a lens focusing device, and more particularly to a lens focusing device that can be used for taking images by a mobile phone or a camera.

The general lens focusing device can be used as a device for autofocusing when capturing images on a handheld device such as a mobile phone, a camera, a tablet computer, a notebook computer, and a network camera.

The lens focusing devices have at least two power supply terminals that can be connected to an external substrate, such as a circuit board in the mobile phone, such that power or control signals can be supplied to the internal voice coil motor for relative focus movement.

However, in the conventional lens focusing device, the terminal is integrally formed with the elastic piece, or the terminal is electrically connected to the elastic piece by means of thermal fusion or welding. Although the terminal and the elastic piece are integrally formed, although the electrical transmission of the terminal can be ensured, the terminal needs to pass through the base during assembly, which is troublesome in the manufacturing process.

The terminal is thermally fused or soldered, and the terminal has been embedded in the base when the base is formed. Therefore, it is necessary to ensure the electrical connection between the terminal and the elastic piece during the process, which may be due to poor electrical connection between the terminal and the elastic piece. , resulting in a defective product of the overall lens focusing device.

The present invention provides a reliable and simple arrangement of terminals in a fixed position based on the above-mentioned needs and deficiencies, and ensures that the terminals can be easily The assembled lens focusing device.

Embodiments of the present invention provide a lens focusing device, including: a lens carrier carrying a lens, a base supporting the lens carrier for relative movement, a conductive elastic member, a terminal insertion groove on a side of the base, and The elastic terminal is elastically connected between the base and the lens carrier, and the connecting terminal can electrically connect the elastic member, and the connecting terminal further comprises a first end, a second end, and a connection. The first end portion extends in the incident side direction of the optical axis and is connected to the elastic member; the second end portion extends toward the exit side of the optical axis; and the connecting portion is connected between the first end portion and the second end portion.

The lens focusing device according to the embodiment of the present invention includes: a base having a terminal insertion groove; and a connection terminal receivable in the terminal insertion groove; the terminal insertion groove has a storage groove, a communication groove, and a cut gap, and the storage The groove forms an opening on one surface and a side surface of the base, the opening penetrates the communication groove to the cut notch, the first end of the connecting terminal can be inserted from the receiving groove, the connecting portion is placed into the communication structure, and the second end portion is placed into the cutting The gap makes assembly very simple and accurate.

The first end portion and the second end portion of the connecting terminal in the embodiment of the invention extend along the incident side and the exit side of the optical axis, and the first end portion is extendedly connected to the elastic member to ensure electrical conduction between the elastic member and the connecting terminal. The second end portion extends to the outside in a direction opposite to the first end portion, so that the connection terminal can be easily connected to the external substrate.

The elastic member in the embodiment of the present invention has an outer ring portion, and a part of the outer ring portion has a through hole, and the first end portion has a protruding portion, and the protruding portion protrudes from the elastic member disposing surface of the base and passes through the through hole of the elastic member. Connected to the elastic member so that The current can be easily maintained by the connection between the elastic member and the connecting terminal, and the connection terminal can be effectively prevented from coming off the base.

The lens focusing device of the embodiment of the present invention may have two connection terminals, and the terminal embedding slots on the base may correspond to the shape of the connection terminals to receive the connection terminals, and the lens carrier may also be provided with a coil, wherein the elastic member has the first a portion and a second portion, the first portion being connected to one end of the connecting terminal and one end of the coil to enable current to pass; the second portion of the elastic member is connected to the other end of the connecting terminal and the other end of the coil The current is allowed to pass, and the first part and the second part of the elastic member are separated and insulated from each other. Such a lens focusing device has the advantages of production because of the power supply structure of the coil, which constitutes an easy assembly state.

The above described features and advantages of the present invention will be more apparent from the following description.

Please refer to FIG. 1 and FIG. 2 together, wherein FIG. 1 is a perspective view of an embodiment of the lens focusing device of the present invention, and FIG. 2 is a perspective exploded view of FIG. As shown in Fig. 1, the lens focusing device 10 of the present invention has a slightly rectangular outer shape. A lens mount 50 for supporting a lens (not shown) is disposed at a central portion of the lens focusing device 10. A yoke 40 is disposed outside the lens mount 50 to surround the lens mount 50 and the base 70.

The lens focusing device 10 has a lens carrier 50 for carrying a lens, an upper cover 20 (as shown in FIG. 2), and a base 70. The base supports the lens carrier as a phase. The focus moves on. Further, a lens coil motor 10 is provided inside the lens focusing device 10, and the lens focusing device 10 can relatively move the lens carrier 50 with respect to the susceptor 70 in the direction of the optical axis α by the voice coil motor. The lens focusing device 10 can be used as a camera module or the like after the image sensor (not shown) is disposed on the emission side of the optical axis α, but the use of the lens focusing device 10 is not limited thereto.

As shown in FIG. 2, the lens focusing device 10 includes a yoke 40, an upper cover 20, an upper elastic member 30, a lens carrier 50, a magnet 44, a coil 48, an elastic member 60, a base 70, and connecting terminals 80a and 80b. The lens focusing device 10 is along the optical axis α direction of the lens, the light is incident from the lens end into the incident side, and the light exiting along the optical axis α is referred to as the exit side.

In the present embodiment, the yoke 40 in the lens focusing device 10 is provided with the upper cover 20 and the outer peripheral portion 40a of the outer side of the cover base 70. However, the shape of the yoke 40 is not limited as long as it can be disposed on the upper cover 20 and the base 70. Can be inside. Further, the yoke 40 in the present embodiment is formed of a component having a slightly rectangular appearance, but like the magnet 44, it may be composed of a plurality of components.

The upper cover 20 is coupled to the elastic member 30, and the upper elastic member 30 supports the lens holder 50 at the incident side. The upper cover 20 has an upper cover post portion 24 in which the upper cover frame portion 22 having a substantially rectangular frame shape and the four corners of the upper cover frame portion 22 project toward the exit side in the optical axis α direction. An upper elastic member installation surface 22a is formed on a plane on which the upper cover frame portion 22 is located at the exit side end. The outer ring portion 32 of the upper elastic member 30 is fixed to the upper elastic member setting surface 22a with an adhesive or the like. Further, the upper cover column portion 24 of the upper cover 20 is continued to the base column portion 74 of the base 70 by an adhesive or the like.

As shown in FIG. 2, the upper elastic member 30 is elastically connected to the upper cover 20 and the mirror. Between the head carriers 50. The lens carrier 50 is elastically supported by the upper elastic member 30 and the elastic member 60, and is located between the upper cover 20 and the base 70, so that the lens carrier 50 can freely move in the optical axis α direction. The upper elastic member 30 has a plurality of annular shapes formed by the outer ring portion 32, the inner ring portion 34, and the arm portion 36.

The outer ring portion 32 constituting the outer peripheral portion of the upper elastic member 30 is fixed to the upper elastic member setting surface 22a of the upper cover frame portion 22. The inner ring portion 34 of the upper elastic member 30 is disposed inside the outer ring portion 32, and is fixed to the inner ring setting portion 54 of the lens mount 50 by an adhesive or the like. The outer ring portion 32 and the inner ring portion 34 of the upper elastic member 30 are connected to each other by the arm portion 36.

The upper elastic member 30 is made of an elastic material such as metal, and the arm portion 36 is elastically deformable. Since the arm portion 36 is elastically deformable, the inner ring portion 34 can relatively move in the direction of the optical axis α with respect to the outer ring portion 32.

The magnet 44 is clamped by the upper cover frame portion 22 of the upper cover 20 and the base frame portion 72 of the base 70. In the present embodiment, the magnet 44 is located near the inner side of the upper cover column portion 24 and the base 74, and is disposed at four corners of the lens focusing device 10, and is opposed to the coil 48 attached to the lens carrier 50 in the assembled state. In the present embodiment, the voice coil motor that drives the lens mount 50 is composed of a magnet 44, a yoke 40, and a coil 48.

The coil 48 is fixed to the coil setting portion 52 on the outer peripheral portion of the lens holder 50. Further, one end portion of the coil 48 is connected to the outer ring portion 62a and the inner ring portion 64a of the elastic member 60 (as shown in FIG. 5), and the elastic member 60 is electrically conductive to allow current to be conducted through the elastic member 60 to one end of the coil 48. The other end of the coil 48 is connected to the outer ring portion 62b and the inner ring portion 64b of the elastic member 60 (as shown in FIG. 5), so that current is conducted to the other end of the coil 48 by the elastic member 60. Into the power supply loop. Moreover, as shown in FIG. 5, the connecting terminal 80a (the protruding portion 84a is a part of the connecting terminal 80a) is connected to the elastic member outer edge portion 60a and the outer ring portion 62a, and can be electrically connected to each other to connect the terminal 80b (the protruding portion 84b). The portion of the connecting terminal 80b is connected to the outer ring portion 62b of the elastic member 60 to be electrically connected. Therefore, the coil 48 shown in Fig. 2 is supplied with electric power for driving the lens mount 50 by the outer ring portions 62a, 62b of the elastic member 60 and the joint terminals 80a, 80b which are in contact therewith.

The lens holder 50 has a hollow cylindrical shape, and a lens (not shown) is fixed in the lens holder 50. An incident side inner ring installation portion 54 is provided on one end surface of the incident side of the lens mount 50, and an inner ring portion 34 of the upper elastic member 30 is fixed to the incident side inner ring installation portion 54. An exit-side inner ring installation portion 56 is provided on the end surface of the lens carrier 50 on the exit side, and the inner ring portions 64a and 64b (shown in FIG. 5) of the elastic member 60 are fixed to the exit-side inner ring installation portion 56.

As shown in FIG. 2, the elastic member 60 is elastically connected between the base 70 and the lens carrier 50. The elastic member 60 is composed of two sets of first and second portions 60a and 60b which are separated and insulated from each other, and includes outer ring portions 62a and 62b and inner ring portions 64a and 64b, and can also serve as one of the power supply lines of the coil 48. Part. The elastic member 60 has a structure similar to that of the upper elastic member 30 except that it has two separate portions. FIG. 3 is a perspective view showing the elastic member being assembled on the elastic member setting surface of the base, and the first portion 60a of the elastic member 60 is externally The ring portion 62a, the inner ring portion 64a, and the arm portion 66a are composed; the second portion 60b of the elastic member 60 is composed of an outer ring portion 62b, an inner ring portion 64b, and an arm portion 66b.

As shown in FIG. 3, the outer ring portions 62a, 62b constituting the outer peripheral portion of the elastic member 60 are fixed to the elastic member mounting surface 72a of the base frame portion 72. Elastic member 60 The inner ring portions 64a, 64b are located inside the outer ring portions 62a, 62b, and are fixed to the exit side inner ring setting portion 56 (shown in FIG. 2) of the lens mount 50 by an adhesive or the like, and the outer ring portion 62a and the inner ring. The portion 64a is coupled by the arm portion 66a, and the outer ring portion 62b and the inner ring portion 64b are coupled by the arm portion 66b.

The elastic member 60 is also the same as the upper elastic member 30, and is made of an elastic material such as metal. The arms 66a and 66b are elastically deformable, and the inner ring portions 64a and 64b are opposite to the outer ring due to the elastic deformation of the arm portion 66a. The portions 62a, 62b are relatively movable in the optical axis α direction.

As shown in FIG. 2, the base 70 is coupled to the lens holder 50 by an elastic member 60, and the upper cover 20 is coupled to the lens holder 50 by the upper elastic member 30, so that the base 70 and the lens holder 50 are relatively movable. The base 70 has a rectangular outer shape and a through hole at the center. The four corners of the base frame portion 72 are respectively provided with a base post portion 74 projecting toward the incident side in the optical axis α direction. The base 70 is provided with an elastic member setting surface 72a on the incident side end surface of the base frame portion 72. The elastic member setting surface 72a can be disposed with the outer ring portions 62a, 62b of the elastic member 60 (as shown in FIG. 5).

As shown in FIG. 3 and FIG. 4, FIG. 4 is a side view of FIG. 3, the base frame portion 72 has four outer peripheral sides, one of the side faces 75 has a terminal embedding groove, and the terminal embedding groove is assembled and placed. The connection terminals 80a, 80b are connected. That is, the side surface 75 is provided with two sets of terminal fitting grooves for assembling the connecting terminals 80a and 80b, and includes the receiving grooves 76a and 76b, the communication grooves 77a and 77b, and the cut notches 78a and 78b.

The accommodation grooves 76a and 76b have openings on the side surface 75 and extend in a direction slightly perpendicular to the direction of the optical axis α. And because the storage grooves 76a, 76b are along Since the optical axis α direction extends in a direction slightly perpendicular to each other, the accommodation grooves 76a and 76b mean a pair of wall portions facing each other.

The communication grooves 77a and 77b have openings in the elastic member installation surface 72a and the side surface 75. Further, the communication groove 77a communicates with the accommodation groove 76a, and the communication groove 77b communicates with the accommodation groove 76b. The cut notches 78a and 78b are formed so that the side walls of the storage grooves 76a and 76b extending toward the emission side of the optical axis α are opened, so that the second end portions 82a and 82b of the connection terminals 80a and 80b can be emitted from the exit side of the base 70. Extend out.

As shown in FIG. 6, FIG. 6 is an exploded perspective view of the base, the elastic member, and the connecting terminal. The connecting terminal 80a has a first end portion 81a extending toward the incident side in a direction parallel to the optical axis α direction toward the elastic member 60. And connecting the first portion 60a of the elastic member to allow current to be conducted to the elastic member 60 through the connecting terminal 80a; the connecting terminal 80a has a second end portion 82a and a connecting portion 83a at one end of the opposite end of the first end portion 81a, and second The end portion 82a extends in a direction toward the exit side that is slightly parallel to the direction of the optical axis α, that is, in a direction opposite to the first end portion 81a; the connecting portion 83a is slightly perpendicular to the direction of the optical axis α and the first end The portion 81a and the second end portion 82a are continued. The first end portion 81a and the second end portion 82a are slightly perpendicular to each other as seen from the direction of the optical axis α.

As shown in FIG. 4, the joint portion 83a of the joint terminal 80a is housed in the housing groove 76a of the base 70. The first end portion 81a passes through the communication groove 77a of the base 70, and a portion thereof extends from the elastic member setting surface 72a toward the elastic member 60 (i.e., the incident side). That is, the first end portion 81a has a protruding portion 84a. Further, the second end portion 82a is received in the cut notch 78a.

As shown in FIG. 6, the connection terminal 80b is also the same as the connection terminal 80a, and has a first end portion 81b extending toward the incident side in the direction parallel to the optical axis α direction toward the elastic member 60, and the second portion of the elastic member. 60b is connected to conduct current through the connecting terminal 80b to the elastic member 60; the connecting terminal has a second end portion 82b and a connecting portion 83b at the opposite end of the first end portion 81b, and the second end portion 82b is along the direction of the optical axis α Slightly parallel extending in the direction of the exit side, that is, extending in a direction opposite to the first end portion 81b; the connecting portion 83b is connected to the first end portion 81b and the second end portion 82b in a direction slightly perpendicular to the direction of the optical axis α. between. The first end portion 81b and the second end portion 82b are slightly perpendicular to each other as seen from the direction of the optical axis α.

The connection terminal 80b and the connection terminal 80a are symmetrically arranged. That is, as shown in FIG. 4, the connecting portion 83b of the connecting terminal 80b is housed in the housing groove 76b of the base 70, and the first end portion 81b passes through the communication groove 77b of the base 70, and one of the first end portions 81b The portion protrudes from the elastic member setting surface 72a toward the elastic member 60a (i.e., the incident side). That is, the first end portion 81b has a protruding portion 84b. Further, the second end portion 82b is received in the cut notch 78b.

The connection terminal 80a and the connection terminal 80b serve as power supply terminals, and externally supply power to the voice coil motor of the lens focus device 10. Therefore, the second end portion 82a and the second end portion 82b can be connected to an external substrate (not shown) or the like to allow current to pass therethrough.

Please refer to FIG. 6 to FIG. 8 to illustrate the assembling method of the connecting terminals 80a and 80b and the elastic member 60 of the base 70 of the present invention. FIG. 7 is a top view of the base viewed from the optical axis, and FIG. A partial enlarged view of the seven. The elastic member 60 and the connection are respectively indicated by arrows 90a and 90b in FIG. In the grouping direction of the terminals, the connecting terminals 80a and 80b are assembled in the terminal fitting grooves of the base 70. The connecting portions 83a and 83b of the connecting terminals 80a and 80b are respectively placed in the housing grooves 76a and 76b, and are attached to the side surface 75 of the base 70.

As shown in Fig. 7, the first end portions 81a, 81b pass through the elastic member mounting surface 72a and the side surface 75 to communicate with the openings of the grooves 77a, 77b. Therefore, the first end portions 81a and 81b may be placed in the communication grooves 77a and 77b of the side surface 75 while the connection portions 83a and 83b are placed in the accommodation grooves 76a and 76b. As shown in Fig. 6 and Fig. 7, the second end portions 82a, 82b are also accommodated in the cut notches 78a, 78b (as shown in Fig. 4).

As shown in Fig. 7, when the connecting terminals 80a, 80b are assembled to the base 70, the protruding portions 84a, 84b of the first end portions 81a, 81b protrude from the elastic member setting surface 72a. Next, as shown by arrows 91a and 91b in Fig. 6, the elastic members 60a and 60b are disposed on the elastic member installation surface 72a.

Fig. 5 is a top plan view showing the elastic member disposed on the susceptor from the incident side of the optical axis, and the outer ring portions 62a, 62b of the elastic members 60a, 60b have through holes 67a, 67b. The protruding portions 84a, 84b protruding from the elastic member setting surface 72a can pass through the through holes 67a, 67b corresponding thereto.

As shown in Fig. 8, the protruding portion 84a passes through the outer edge portion 68a of the outer ring portion 62a. The outer edge portion 68a catches the protruding portion 84a, restricts the movement of the first end portion 81a inside the communication groove 77a, and then welds the protruding portion 84a to the outer ring portion 62a to prevent the connection terminal 80a from coming off.

After the susceptor 70 completes the arrangement of the connection terminals 80a, 80b and the elastic member 60, it is necessary to ensure the electrical conductivity between the connection terminals 80a, 80b and the elastic members 60a, 60b. As shown in the embodiment of Figure 8, the solder is spanned across the first end The 81a (including the protruding portion 84a is preferable) and the outer ring portion 62a are formed to form a solder solidified portion 88 after curing. The first end portion 81b and the outer ring portion 62b have the solder solidified portion 88 as in the case of FIG.

In addition, as shown in FIG. 6, the manufacturing method of the connection terminals 80a, 80b is not limited. For example, as shown in FIG. 9, FIG. 9 is a schematic view of another embodiment of the connection terminal, which may be made of metal plates 89a, 89b. The bending process is performed. At this time, the surface of the plates 89a and 89b extends in the direction as shown in FIG. 9, and the second end portions 82a and 82b are parallel to the side surface 75. The first end portions 81a, 81b and the second end portion are formed. 82a, 82b are perpendicular to each other.

Although the shape of the connection terminals 80a and 80b is simple, it can be disposed on the narrow base 70, which contributes to downsizing of the lens focusing device 10.

As shown in FIG. 6, the lens focusing device 10 has the connecting portions 83a and 83b of the connecting terminal 80a inserted into the predetermined positions along the receiving grooves 76a and 76b by the side faces 75 of the base 70, so that the assembly is very easy and accurate.

The first end portions 81a and 81b are extended to the exit side by one end of the connecting portions 83a and 83b in a direction slightly parallel to the optical axis α direction. Therefore, the free ends of the first end portions 81a, 81b are close to the elastic member setting surface 72a or protrude from the elastic member setting surface 72a, so that the free ends of the first end portions 81a, 81b and the elastic member setting surface 72a can be easily ensured. The electrical conductivity of the upper elastic member 60.

Further, since the first end portions 81a and 81b pass through the communication grooves 77a and 77b of the base 70, the connection terminals 80a and 80b can be more accurately fixed at a predetermined position and can be surely held in the base 70.

The lens focusing device 10 as described above, the lens focusing device 10 as a whole When combined with a voice coil motor that moves in the vertical direction with the optical axis α, it can also be used as an optical device having a focus mechanism and correcting vibration. Further, the method of ensuring the electrical conductivity between the connection terminals 80a and 80b and the elastic members 60a and 60b is not limited to welding, and it may be fixed by using a conductive adhesive, a solvent, or a metal member.

Further, unlike the example shown in FIG. 6 and the like, the elastic members 60a and 60b or the connecting terminals 80a and 80b may be integrally formed when the metal is fixed to the base 70, and may be separated and insulated when the voice coil motor is driven. can.

The present disclosure has been disclosed in the above embodiments, but it is not intended to limit the disclosure, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the disclosure. The scope of protection of this disclosure is subject to the definition of the scope of the patent application.

10‧‧‧ lens focusing device

20‧‧‧Upper cover

22‧‧‧Top cover frame

22a‧‧‧Upper elastic member setting surface

24‧‧‧Upper column

30‧‧‧Upper elastic parts

32‧‧‧Outer Rings

34‧‧‧ Inner Ring Department

36‧‧‧arms

40‧‧‧ yoke

40a‧‧‧The outer part

44‧‧‧ magnet

48‧‧‧ coil

50‧‧‧Lens carrier

52‧‧‧Coil setting department

54‧‧‧Injection side inner ring setting section

56‧‧‧Outlet side inner ring setting section

60‧‧‧Flexible parts

60a‧‧‧The first part of the elastic part

60b‧‧‧The first part of the elastic part

62a, 62b‧‧‧Outer Rings

64a, 64b‧‧ Inner Rings

66a, 66b‧‧‧arm

67a, 67b‧‧‧through holes

68a‧‧‧The outer edge

70‧‧‧Base

72‧‧‧Base frame

72a‧‧‧Flexor setting surface

74‧‧‧Base column

75‧‧‧ side

76a, 76b‧‧‧ Storage ditch

77a, 77b‧‧‧ connected trench

78a, 78b‧‧‧ cut gap

80a, 80b‧‧‧ connection terminal

81a, 81b‧‧‧ first end

82a, 82b‧‧‧ second end

83a, 83b‧‧‧Continuation Department

84a, 84b‧‧‧ protruding parts

88‧‧‧ Solder curing department

90a, 90b‧‧‧Continuous terminal loading direction

91a, 91b‧‧‧ elastic parts loading direction

Α‧‧‧ optical axis

FIG. 1 is a perspective view of an embodiment of the present invention.

Figure 2 is a perspective exploded view of Figure 1.

Figure 3 is a perspective view of the elastic member set on the base.

Figure 4 is a side view of Figure 3.

Figure 5 is a top plan view showing the elastic member disposed on the base.

Figure 6 is an exploded perspective view of the base and the elastic member and the connecting terminal.

Figure 7 is a top view of the pedestal.

Figure 8 is a partially enlarged schematic view of Figure 7.

Figure 9 is a schematic view of another embodiment of the connection terminal.

60‧‧‧Flexible parts

60a‧‧‧The first part of the elastic part

60b‧‧‧The first part of the elastic part

70‧‧‧Base

72‧‧‧Base frame

72a‧‧‧Flexor setting surface

75‧‧‧ side

76a, 76b‧‧‧ Storage ditch

80a, 80b‧‧‧ connection terminal

81a, 81b‧‧‧ first end

82a, 82b‧‧‧ second end

83a, 83b‧‧‧Continuation Department

90a, 90b‧‧‧Continuous terminal loading direction

91a, 91b‧‧‧ elastic parts loading direction

Claims (7)

A lens focusing device includes: a lens carrier that carries a lens; a base that supports the lens carrier for relative focus movement; at least one elastic member that is electrically conductive and elastically coupled to the base and the lens carrier Between the seats; at least one terminal embedding groove is located at a side of the base, wherein the terminal embedding groove has a receiving groove, a connecting groove and all open gaps, and the receiving groove communicates with the connecting groove and the cutting Between the notches, the side surface has at least one opening extending from the communication groove and the receiving groove to the incision notch; and at least one connection terminal is inserted into the terminal insertion groove for electrically connecting The elastic member, wherein the connecting terminal further comprises: a first end portion, inserted into the communication groove, extending toward an incident side of an optical axis toward the elastic member, connected to the elastic member; and a second end portion The cut notch is inserted to extend toward an exit side of the optical axis; and a connecting portion is inserted into the receiving groove to be connected between the first end and the second end. The lens focusing device of claim 1, wherein the first end portion and the second end portion are perpendicular to each other in the optical axis direction. The lens focusing device of claim 1, wherein the connecting portion is perpendicular to the optical axis direction. The lens focusing device of claim 1, wherein the base The seat has an elastic member setting surface, and the first end portion protrudes from the elastic member setting surface. The lens focusing device of claim 4, wherein the first end portion has a protrusion protruding from the elastic member setting surface, the elastic member having a plurality of outer ring portions, the outer ring portion having at least a through hole through which the protruding portion passes. The lens focusing device of claim 1, wherein the connecting terminal is bendable from a sheet material. The lens focusing device of claim 1, wherein the connection terminal has two, the lens carrier further has a coil, the elastic member includes a first portion and a second portion; The connecting terminal is electrically connected to the first portion of the elastic member and one end of the coil, and the other connecting terminal is electrically connected to the second portion of the elastic member and the other end of the coil to pass current through the connection The terminal and the elastic member are conducted to both ends of the coil, and the first portion and the second portion of the elastic member are insulated from each other.