CN111897084A

CN111897084A - Lens driving device, camera device and electronic equipment

Info

Publication number: CN111897084A
Application number: CN202010811672.6A
Authority: CN
Inventors: 多田纯一; 成岛裕贵
Original assignee: New Shicoh Technology Co Ltd
Current assignee: New Shicoh Technology Co Ltd
Priority date: 2014-10-29
Filing date: 2015-10-14
Publication date: 2020-11-06
Anticipated expiration: 2035-10-14
Also published as: JP6481242B2; CN105319663A; CN105319663B; JP2016090616A; CN111897084B; CN205015548U

Abstract

The lens driving device comprises a lens support for supporting a lens, a driving shaft connected with the lens support and used for driving the lens support, and a frame for accommodating the lens support and the driving shaft, wherein the frame is provided with a first side surface, a second side surface connected with the first side surface, and a third side surface connected with the second side surface; the driving shaft is embedded and clamped with the lens bracket and is arranged on the opposite side of the second side surface; the frame is embedded between the guide parts to clamp the lens support for guiding; the camera device is provided with a lens driving device, and the electronic equipment is provided with the camera device. The invention can reduce the range of the center of the butt lens and the direction of the driving shaft.

Description

Lens driving device, camera device and electronic equipment

Technical Field

The invention relates to a lens driving device, a camera device and an electronic apparatus.

Background

Miniature cameras are arranged in electronic equipment such as mobile phones and smart phones. Some of these miniature cameras are auto-focusing. A lens driving device for driving the lens is provided in the auto-focus type micro camera.

Patent documents 1 and 2 describe conventional examples of such lens driving devices.

Patent document 1 (patent publication JP2010-243985 a) shows a manufacturing method of a lens driving device, which has a feature including two major processes, one of which is to store a lens driving unit in a storage portion of a frame unit using an opening portion, and to support a driving shaft in a supporting portion; another process is to mount a cover member on the frame unit, cover the opening portion, and pressure-weld the pressure-welded portion on the drive shaft.

Patent document 2 (patent publication JP2006-235583 a) shows a lens driving device having a base member mounted on an image pickup sensor, and a cover member mounted on the base member. Between the base member and the cover member, in a movable state, in a lens unit capable of supporting a lens in an axial direction, a slider is mounted on the cover member so as to be movable in the axial direction while supporting the lens or a lens holder.

In the previous cases, piezoelectric actuators are used, by means of which the lens frame or the slider is driven. The lens frame or the slider is supported by being in frictional contact with the piezoelectric actuator.

However, in the above-described conventional cases, a shaft arm extends from the lens frame or the slider to the side opposite to the drive shaft in which the center of the lens is fitted, a guide shaft is provided on the shaft arm, and the lens frame or the slider is fitted to the guide shaft, whereby the side opposite to the drive shaft of the lens frame or the slider is supported.

Therefore, in the conventional case, the direction of the center of the docking lens and the drive axis becomes obvious, and there is a problem that the lens driving device cannot be downsized.

Disclosure of Invention

In view of the defects in the prior art, an object of the present invention is to provide a lens driving device, a camera device, and an electronic apparatus, which can reduce the range of directions of the center of a docking lens and a driving shaft, and can realize miniaturization of the lens driving device.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a lens driving device is provided with a lens bracket for supporting a lens, a driving shaft which is butted with the lens bracket and drives the lens bracket, and a frame for accommodating the lens bracket and the driving shaft, wherein the frame is provided with a first side surface, a second side surface connected with the first side surface and a third side surface connected with the second side surface; the driving shaft is embedded and clamped with the lens bracket and is arranged on the opposite side of the second side surface; the frame is inserted between the guide portions to hold the lens holder for guiding.

A lens driving device is provided with a lens bracket for supporting a lens, a driving shaft which is butted with the lens bracket and drives the lens bracket, and a frame for accommodating the lens bracket and the driving shaft, wherein the frame is provided with a first side surface, a second side surface connected with the first side surface and a third side surface connected with the second side surface; the driving shaft is embedded and clamped with the lens bracket and is arranged on the opposite side of the second side surface; the first side surface and the third side surface form guide portions facing each other, guided portions formed on the lens holder corresponding to the guide portions and respectively abutting against the guide portions, and the frame sandwiches the lens holder between the guide portions to perform a guiding function.

In a preferred aspect, a convex portion is formed at least at one end of the guide portion and the guided portion so as to protrude from the other end.

From the most preferable point of view, the driving shaft should be fixed to the vibration member, and the piezoelectric actuator is configured by the driving shaft and the vibration member.

From the best point of view, the lens holder is supported on the drive shaft by means of a support organ. The support mechanism is provided with a pressing member fixed to the lens holder and a holding member for holding the drive shaft in frictional contact with the drive shaft. An excitation portion provided on the pressing member faces the drive shaft to excite the holding member.

In the first side and the third side of the frame, a convex portion protruding inward and serving as a support is integrally formed, and the drive shaft is inserted into the convex portion serving as a support by an elastic member and supported in a freely vibrating manner.

A camera device comprises a lens, a lens holder for holding the lens, a drive shaft for driving the lens holder and abutting against the lens holder, a frame for accommodating the lens holder and the drive shaft, and an image sensor disposed on an optical axis of the lens. The frame is provided with a first side surface, a second side surface connected with the first side surface and a third side surface connected with the second side surface; the driving shaft is embedded and clamped with the lens bracket and is arranged on the opposite side of the second side surface; the frame is inserted between the guide portions to hold the lens holder for guiding.

A camera device comprises a lens, a lens holder for holding the lens, a drive shaft for driving the lens holder and abutting against the lens holder, a frame for accommodating the lens holder and the drive shaft, and an image sensor disposed on an optical axis of the lens. The frame is provided with a first side surface, a second side surface connected with the first side surface and a third side surface connected with the second side surface; the driving shaft is embedded and clamped with the lens bracket and is arranged on the opposite side of the second side surface; the first side surface and the third side surface form guide portions facing each other, guided portions formed on the lens holder corresponding to the guide portions and respectively abutting against the guide portions, and the frame sandwiches the lens holder between the guide portions to perform a guiding function.

An electronic apparatus equipped with the camera device.

Compared with the prior art, the invention has the following beneficial effects:

the invention can reduce the range of the center of the butt lens and the direction of the driving shaft because the lens bracket is supported by the guiding part formed at the corner of the frame.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a cross-sectional view of one embodiment of a camera device provided by the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;

FIG. 4 is a ramp view of an actuator used in one embodiment of the present invention;

FIG. 5 is a cross-sectional view and drive circuit diagram associated with the actuator of FIG. 4;

FIG. 6 is an oblique view of the support member and its periphery in accordance with one embodiment of the present invention;

FIG. 7 is a cross-sectional view taken along line C-C of FIG. 3;

fig. 8 is an oblique view of the vibrating member of the actuator and its periphery in one embodiment of the invention.

In the figure, 10, a camera device, 12, a frame, 14, a zoom lens, 16, a focus lens, 18, a lens driving device, 20, a first member, 22, a first side, 24, a second side, 26, a third side, 28, a fourth side, 30, a fifth side, 32, a second member, 33, a third member, 34, a fourth member, 36, a fifth member, 38, a light receiving window, 40, a prism, 42, a reflecting surface, 44, a first intermediate mirror, 46, a second intermediate mirror, 48, an image sensor, 50, an image sensor mounting hole, 52, a zoom lens holder, 54, a focus lens holder, 56, a second intermediate mirror holder, 58, an actuator, 60, a vibrating member, 62, a driving shaft, 64, a first piezoelectric element, 66, a second piezoelectric element, 68, an electrode plate, 70, a first electrode layer, 72, a second electrode layer, 74, an adhesive, 76, 68, a lens driving device, a second side, a third side, a second side, a power-supply-dedicated docking portion 78, a power supply control portion 80, a supporting member 82, a first guide portion 84, a second guide portion 86, a first guided portion 88, a second guided portion 90, a first groove 92, a second groove 94, a first protrusion portion 96, a second protrusion portion 98, a supporting portion 100, a supporting groove 102, a fitting portion 104, a fitting groove 106, a holding member 108, a fitting piece portion 110, a holding portion 112, a pressing member 114, a locking portion 118, a protrusion portion 120, an excitation portion 122, a bushing (elastic member) 124, a flange portion 126, an engagement member 128, an insertion hole 130, a first support-dedicated protrusion portion 132, a second support-dedicated protrusion portion 134, a first engagement groove 136, a second engagement groove 138, a focus lens position detector 140, a focus lens position detector, and a focus lens position detector, A focus lens position detector 142, a first magnetic pole member 144, a second magnetic pole member 146, a first MR sensor 148, a second MR sensor 150, an MR sensor holder portion 152, a flexible wiring board dedicated to the first MR sensor 154, a first connection portion 156, a space portion 158, a flexible wiring board dedicated to the second MR sensor 160, a second connection portion 162, a flexible wiring board dedicated to the first vibration member 164, a flexible wiring board dedicated to the second vibration member 166, a first terminal portion 168, a second terminal portion 170, and a third terminal portion.

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.

In fig. 1 to 3, a camera device 10 according to an embodiment of the present invention is shown. The camera device 10 is used as an auto-focus type small camera that is applied to electronic apparatuses such as a cellular phone and a smartphone.

The camera device 10 has a frame 12 formed in one direction and has a rectangular parallelepiped shape. In the frame 12, a zoom lens 14 and a focus lens 16, which will be described later, and a lens driving device 18 for driving the zoom lens 14 and the focus lens 16, respectively, are provided.

In addition, in fig. 1, the frame 12 is shown in the form of a two-dot chain line for ease of understanding.

The frame 12 is provided with a first member 20 forming a base portion, a second member 32 constituting the first side 22 and the second side 24, a third member 33 constituting the third side 26, a fourth member 34 constituting the fourth side 28, and a fifth member 36 constituting the fifth side 30.

The first member 20 is disposed at one longitudinal end of the camera device 10. A light receiving window 38 is formed in the upper surface of the first member 20, and a prism 40 is disposed below the light receiving window 38. As is well known, the prism 40 has a reflection surface 42 formed at 45 °, transmits through the light receiving window 38, reflects light received from above by the reflection surface 42, and guides the light to the longitudinal direction of the camera device 10. Further, in the first member 20, a first intermediate mirror 44 connected to the prism 40 is further disposed. One end of the second member 32, the third member 33, and the fourth member 34 is fixed to the first member 20. The fifth member 36 is fixed to the other ends of the second member 32, the third member 33, and the fourth member 34.

As shown in fig. 2 and 3, the first side 22, the second side 24, the third side 26, and the fourth side 28, which are constituted by the second member 32, the third member 33, and the fourth member 34, constitute a frame having a square block shape in cross section. That is, for example, the first side surface 22 is a bottom surface, and the first side surface 22 is erected to the second side surface 24 at 90 ° in an integrated manner. In addition, for example, the third side 24 is a top side, and the second side is extended such that the second side forms 90 ° to the third side. The fourth side 26 is disposed at the lower side such that the third side 24 forms 90 ° to the fourth side 26, and the lower end of the fourth side 24, the fourth side 26, is fixed to the first side 22, which is the bottom surface.

As shown in fig. 1, the zoom lens 14, the second intermediate mirror 46, and the focus lens 16 facing in the vertical direction from the first intermediate mirror 44 are arranged in a space surrounded by the first side surface 22 to the fourth side surface 28. Further, an image sensor 48 is disposed at the front end of the focus lens. The image sensor 48 is mounted in a mounting manner in an image sensor mounting hole 50 (shown in fig. 3), the mounting hole 50 being formed in the fifth member 36.

The first intermediate prism 44, the zoom lens 14, the second intermediate prism 46, and the focus lens 16 are arranged along one optical axis, and the received light is transmitted through the prism 40 and imaged on the image sensor 48.

The lens driving device 18 is provided with a zoom lens holder 52 and a focus lens holder 54. The zoom lens holder 52 and the focus lens holder 54 form frames that assume a square shape, respectively, and support the zoom lens 14 and the focus lens 16. In the space surrounded by the first side surface 22 to the fourth side surface 28, the zoom lens holder 52 and the focus lens holder 54 support the camera apparatus 10 in the longitudinal direction of the camera apparatus 10 so as to be movable.

In addition, the second intermediate mirror is supported by a second intermediate mirror support 56, but is fixed to the frame 12, unlike the zoom lens 14 and the focus lens 16.

Further, the lens driving device 18 is provided with an actuator 58. As shown in fig. 4, since the actuator 58 is of a device such as a bimorph type piezoelectric type, a vibration member 60, a drive shaft 62 fixed to the vibration member 60 are arranged. The vibration member 60 includes two flat plate-like first and second

piezoelectric elements

64 and 66, respectively. An electrode plate 68, which is also flat, is embedded between the first piezoelectric element 64 and the second piezoelectric element 66. Namely, the first piezoelectric element 64, the second piezoelectric element 66 and the electrode plate 68 are fixed in a Michler's mutual manner. As shown in fig. 5, the first electrode layer 70 and the second electrode layer 72 are formed on the front and back surfaces of the first piezoelectric element 64 and the second piezoelectric element 66. The driving shaft 62 is fixed to the first electrode layer 70 of the first piezoelectric element 64 with an adhesive 74. The electrode plate is formed of a plate with elasticity such as a metal plate. And the electrode plate 68 is formed in a manner that the energization-dedicated butting portion 76 is protruded toward one side toward the middle position.

As shown in fig. 5, the first electrode layer 70 and the second electrode layer 72 exposed on the surface of the vibration member 60 are butted against the positive electrode side of the power control portion 78, and the electrode plate 68 is butted against the negative electrode side of the power control portion 78 via the current-carrying exclusive butting portion 76. If a pulse voltage is applied between the first electrode layer 70 at one end and the electrode plate 68 in a reverse manner, the first piezoelectric element 64 at one end is energized, the first piezoelectric element 64 at one end expands and contracts, the repetitive vibration member 60 deforms in a bowl shape in one direction, and rapidly returns to the original flat plate shape under the elastic action of the electrode plate 68. In this process, the repetitive driving shaft 62 also exhibits a phenomenon of slight back and forth movement in the axial direction. If a pulse voltage is repeatedly applied between the second electrode layer 72 and the electrode plate 68 at the other end, the second piezoelectric element 66 at the other end expands and contracts. The repetitive vibration member 60 is deformed into a bowl shape toward the other direction and is rapidly restored to the original flat plate shape by the elasticity of the electrode plate 68. In this process, the repetitive driving shaft 62 also exhibits a phenomenon of slight back and forth movement in the axial direction.

In this embodiment, a bimorph type piezoelectric actuator is used as the actuator 58, but the present invention is not limited to this, and other types of piezoelectric actuators and electrostatic actuators may be used.

As shown in fig. 1 to 3, the actuator 58 is located in the frame 12, and the drive shafts 62 are disposed in the space formed between the zoom lens holder 52 and the focus lens holder 54 and the fourth side 28 so as to be different from each other in the longitudinal direction. The zoom lens holder 52 and the focus lens holder 54 are supported by a support mechanism 80 described later and are slidable on the drive shaft 62.

In a manner of sandwiching the zoom lens holder 52 and the focus lens holder 54, in the opposite side of the supporting mechanism 80, a first guide portion 82, a second guide portion 84 are formed at a corner portion between the first side surface 22 and the second side surface 24, and a corner portion between the second side surface 24 and the third side surface 26, and in this embodiment, the first guide portion 82 is convex upward and rightward (in the direction of the fourth side surface 28), and the second guide portion 84 is convex downward and rightward (in the direction of the fourth side surface 28). First and

second guide portions

82 and 84 are formed along the longitudinal direction of the frame 12.

However, in this embodiment, the guide portion 82 is not formed in the second intermediate mirror bracket 56, and the frame 12 of the second intermediate mirror bracket 56 is positioned such that the front and rear portions of the second intermediate mirror bracket 56 are fitted over the guide portion 82.

In the range of the zoom lens holder 52 and the focus lens holder 54, corresponding to the first guide portion 82 and the second guide portion 84, a first guided portion 86 and a second guided portion 88 are formed at upper and lower corner portions on the second side surface 24 side. In this embodiment, the first guided portion 86, the second guided portion 88, and the first groove 90 and the second groove 92 corresponding to the projections of the first guided portion 82 and the second guided portion 84 are formed in the longitudinal direction, and the first guided portion 82, the second guided portion 84, and the first guided portion 86 and the second guided portion 88 constitute a guide rail. First and second projecting

portions

94 and 96 are formed on the upper and lower surfaces of the first and

second recesses

90 and 92 so as to project toward the first and

second guide portions

82 and 84. First and second

convex portions

94 and 96 each taking a hemispherical shape are formed at several places (in this embodiment, two places along the first and second guided portions 86 and 88) of the zoom lens holder 52 and the focus lens holder 54.

The first guided portion 86 and the second guided portion 88 abut against the front ends of the first projecting portion 94 and the second projecting portion 96 on the upper and lower surfaces of the first guide portion 82 and the second guide portion 84. The zoom lens holder 52 and the focus lens holder 54 are sandwiched and supported by first guide portions 82 and second guide portions 84 formed at upper and lower corners of the second side surface 24 so as to be freely slidable in the longitudinal direction of the frame 12. Therefore, the zoom lens holder 52 and the focus lens holder 54 are restricted in their rotational movements (vertical movements of the first guided portion 86 and the second guided portion 88) about the drive shaft 62. In addition, the second side surface 24 is parallel to the zoom lens holder 52 and the focus lens holder 54, and there is almost no gap, so that the range of the center of the docking lens and the direction of the drive shaft 62 (the horizontal direction in fig. 2 and 3) can be reduced. In addition, since the first guided portion 86 and the second guided portion 88 abut only the front ends of the first protruding portion 94 and the second protruding portion 96, the contact area with the frame 12 of the zoom lens holder 52 and the focus lens holder 54 is small, friction generated between the zoom lens holder 52 and the focus lens holder 54 and the frame 12 can be reduced, and the zoom lens holder 52 and the focus lens holder 54 can be guided in the longitudinal direction within the frame 12.

When the zoom lens holder 52 or the focus lens holder 54 is to perform the aforementioned rotating action, it is better to provide the zoom lens holder 52 or the focus lens holder 54 with a gap for the first and second

convex portions

94 and 96 to abut against the first and

second guide portions

82 and 84 than to provide the zoom lens holder 52 or the focus lens holder 54 to abut against in a conventional manner. The first and second projecting

portions

94, 96 are prevented from wearing, and unnecessary driving resistance is suppressed. Of course, even routine docking may be warranted. In addition, since the first guide portion 82 and the second guide portion 84 are formed in the corner portion of the frame 12 on the opposite side of the supporting mechanism 80 after the zoom lens holder 52 or the focus lens holder 54 is sandwiched, even if the aforementioned rotational motion of the zoom lens holder 52 or the focus lens holder 54 occurs within the limited range, the degree of central movement of the zoom lens 14 and the focus lens 16 is smaller than that.

In addition, the first guide portion 82 and the second guide portion 84 may be formed to face each other in the first side surface 22 and the third side surface 26. At this time, the first guided portion 86 and the second guided portion 88 (the first projecting portion 94 and the second projecting portion 96) formed in the zoom lens holder 52 or the focus lens holder 54 corresponding to the first guide portion 82 and the second guide portion 84, respectively, are abutted against the first guide portion 82 and the second guide portion 84, respectively, and it is preferable that the zoom lens holder 52 or the focus lens holder 54 is guided so as to be interposed between the first guide portion 82 and the second guide portion 84.

That is, the first guide portion 82 and the second guide portion 84 may be formed as upper and lower surfaces, and the first guided portion 86 and the second guided portion 88 may be brought into contact with the upper and lower surfaces. In this case, it is not necessary to provide the first guide portion 82 and the second guide portion 84 at the corner between the first side surface 22 and the second side surface 24 and the corner between the second side surface 24 and the third side surface 26, respectively. May be provided in the first side 22 and the third side 26 in a mutually opposing fashion.

In any case, since the structure in which the shaft arm is extended from the zoom lens holder 52 or the focus lens holder 54 to the opposite side of the drive shaft 62 sandwiching the lens center is not adopted from the guide structure, the dimension in the direction connecting the lens center and the drive shaft 62 can be reduced, and the lens drive device 18 can be downsized.

The supporting mechanism 80 has the same structure on the zoom lens side and the focus lens side. For example, if the description is made with respect to the focus lens side, as shown in fig. 2 and 6, a support portion 98 projecting in a block shape from the focus lens holder 54 to the fourth side surface 28-side forms a support mechanism integrally with the focus lens holder 54. In the support portion 98, a support groove 100 is formed by spreading out in a V shape toward the drive shaft 62 side, in parallel with the drive shaft 62. In the support portion 98, a fitting portion 102 projecting toward the fourth side surface 28 is formed vertically from the support groove 100, and the fitting portion 102 is formed vertically. Fitting grooves 104 are formed in the fitting portions 102.

The clamping member 106 is provided with fitting piece portions 108 and clamping portions 110, respectively, the fitting piece portions 108 are fitted in the fitting grooves 104 of the fitting portion 102, respectively, and the clamping portions 110 are provided between the upper and lower fitting piece portions 108. The drive shaft 62-side presents a concave, semi-circular shape forming the clamping portion 110. The drive shaft 62 is sandwiched between the holding portions 110. In the cross-sectional direction, the clamping portion 110 and the drive shaft 62 are in contact with each other at two points (four points in total) above and below. The clamping portion 110 on the fourth side surface 28 side is pressed against the drive shaft 62 side by the excitation portion 120 of the pressing member 112. Therefore, at least one of the upper fitting portion 108 and the lower fitting portion 108 is separated from each other.

The pressing member 112 is provided with a locking portion 114, and is formed in a C-shape when viewed from above. In addition, a projecting portion 118 projecting upward is formed on the upper surface of the support portion 98, and the locking portion 114 is locked around the projecting portion 118 at the projecting portion 118, thereby being inserted from both sides of the projecting portion 118, and the pressing portion 112 is fixed to the support portion 98. In this way, since the locking portion 114 of the pressing member 112 is fixed by fitting in the protruding portion 118 of the supporting portion 98, the degree of protrusion above the supporting portion 98 can be reduced, and the vertical range of the camera device 10 can be reduced. Further, the pressing member 112 has a flat excitation portion 120 extending downward from the locking portion 114, and the driving shaft 62 is fitted into the holding portion 110 by the elasticity of the excitation portion 120. By the constitution of the supporting mechanism 80, the focus lens holder 54 is supported by generating appropriate friction on the driving shaft 62.

At two places such as the base portion and the front end portion, in order to be able to freely vibrate on the frame 12, respectively, the respective drive shafts 62 are supported by the frame 12 through bushings (elastic members) 122 composed of elastic bodies.

As shown in fig. 7, the bush (elastic member) 122 has flange portions 124 disposed on the left and right sides, and an engaging member 126 disposed between the flange portions 124 and the flange portions 124. The engaging member 126 is formed in a case where, for example, a circumferential direction is rounded and a depressed portion is present. An insertion hole 128 is formed at a central position of the bushing (elastic member) 122, and the drive shaft 62 is inserted into the insertion hole 128 in order to enlarge the insertion hole 128. Further, the bush (elastic member) 122 and the drive shaft 62 which are farther from the vibration member 60 are fixed by adhesion, and the bush 122 and the drive shaft 62 which are closer to the vibration member 60 are not fixed by adhesion.

A first support-dedicated projection 130 is formed on the inner side of the first side surface 22 (bottom surface) of the frame 12, facing the engagement portion 126 of the bush 22. In addition, in the inner side of the third side surface 24 (upper surface) of the frame 12, a second support-dedicated projecting portion 132 is formed to oppose the engaging portion 126 of the bush 122. In the first support-dedicated projecting portion 130, a concave semicircular first engaging groove 134 is formed below, and in addition, in the second support-dedicated projecting portion 132, a concave semicircular second engaging groove 136 is formed above. Further, the second support-dedicated projecting portion 130 and the front end of the second support-dedicated projecting portion 132 are butted against each other while the circular engaging portion 126 of the bush 122 and the semicircular first engaging groove 134 are fitted into the second engaging groove 136, and the drive shaft 62 is supported on the frame 12 so as to be freely vibrated (particularly with respect to the axial direction of the drive shaft 62).

In addition, a focus lens position detector 138 and a focus lens position detector 140 are provided within the frame 12. The respective focus

lens position detectors

138 and 140 have the same structure, and are composed of a first magnetic pole member 142, a second magnetic pole member 144, and a first MR sensor 146, a second MR sensor 148 (only the second MR sensor 148 is shown in fig. 6) for detecting different magnetic poles (S pole and N pole) arranged in a crossed manner along the longitudinal direction of the camera device 10. The first MR sensor 146 and the second MR sensor 148 are fixed to the MR sensor holder 150 through the lower portions of the supporting portions 98 of the zoom lens holder 52 and the focus lens holder 54, respectively, and the MR sensor holder 150 protrudes from the fourth side surface 28 — side integrally with the zoom lens holder 52 and the focus lens holder 54. The first magnetic pole member 142 and the second magnetic pole member 144 are fixed to the first side surface 22 (bottom surface) of the frame 12, facing the first MR sensor 146 and the second MR sensor 148. If each of the zoom lens holder 52 and the focus lens holder 54 moves, the degree and direction of movement of each of the zoom lens holder 52 and the focus lens holder 54 can be detected by the first MR sensor 146 and the second MR sensor 148, and reflected as a change in the magnetic field intensity. Signals indicating changes in magnetic field strength are output from the first MR sensor 146 and the second MR sensor 148.

The first MR sensor 146 is connected to a first MR sensor dedicated flexible wiring substrate (hereinafter referred to as "first MR dedicated FPC") 152. Starting from the first connection site 154 that has been connected to the first MR sensor 146, the first MR exclusive FPC152 is bent, extends over the focus lens side, and the first side surface 22 forms a notch, extends to the lower side through a space site formed in a longitudinally offset position of the frame 12, and is pulled from the lower side of the first side surface 22 toward the fifth side surface 30-side. The other second MR sensor 148 is connected to a second MR sensor dedicated flexible wiring board (hereinafter, simply referred to as "second MR dedicated FPC") 158. The second MR FPC158 is bent from a second connection portion 160 connected to the second MR sensor 148, extends to the upper side of the focus lens, is integrated with the first MR FPC152 in the space portion 156, and is pulled toward the fifth side surface 30.

The vibration member 60 of the actuator 58 is connected to the flexible wiring substrate in the same manner. That is, as shown in fig. 8, each of the vibration members 60 is exposed in the space portion 156, and a first vibration member dedicated flexible wiring board (hereinafter, simply referred to as "first vibration member dedicated FPC") 162 connected to one of the vibration members 60 extends downward from one of the vibration members 60 and extends from below the first side surface 22 toward the fifth side surface 30-side. A second vibration member dedicated flexible wiring board (hereinafter, referred to as "second vibration member dedicated FPC") 164 connected to the second vibration member 60 extends downward from the second vibration member 60, is integrated with the first vibration member dedicated FPC162, and extends from below the first side surface 22 to the fifth side surface 30-side. Each of the first vibration member-dedicated flexible wiring board 162 and the second vibration member-dedicated flexible wiring board 164 is divided into three parts, and is connected to the first electrode layer 70 on the drive shaft side of the vibration member 60 by a first terminal portion, connected to the second electrode layer 72 on the back surface side by a second terminal portion 168, and welded to the energization-dedicated connection portion 76 of the electrode plate 68 by a third terminal portion 170, respectively, by means of soldering or the like. In the process of disposing the first terminal portion 166, a crescent shape is formed near the corner of the vibration member 60 distant from the drive shaft 62 so as not to come into contact with the adhesive 74 fixing the drive shaft 62, and the center of the circular arc thereof is formed as a corner. A second terminal portion 168 is formed in a central portion of the vibration member 60 and has an annular shape. The third terminal portion 170 corresponds to the dedicated electrical connection portion 76 during formation, protrudes from the vibration member 60, and has a quadrangular ring shape so as to surround the dedicated electrical connection portion 76.

Next, a case where the focus lens holder 54 is moved by the actuator 58 will be described. As described above, if the pulse voltage is repeatedly applied to the actuator 58, the repetitive vibration member 60 is deformed in one direction into a bowl shape, and is quickly restored to the original flat plate shape. In this process, a phenomenon that the drive shaft slightly reciprocates in the axial direction is also repeated. When deformed in one direction into a bowl shape, the focus lens holder 54 moves together with the drive shaft 62 because the focus lens holder 54 is supported by the support mechanism 80 to make frictional contact with the drive shaft 62 of the actuator 58. When the vibration member 62 is quickly returned to the original flat plate shape, the drive shaft 62 is also moved in the reverse direction at a high speed, and the focus lens holder 54 is in a high speed state, and therefore cannot follow the movement of the drive shaft 62, cannot return to the original position, and can only stay at the position. Therefore, during one operation, the focus lens holder 54 moves with a large amplitude of deformation of the vibration member 60. By applying the pulse voltage to the reverse copy, the above movement can be repeated, and the focus lens holder 54 can be moved to the target position.

In this case, since the focus lens holder 54 is supported by the drive shaft 62 provided at one end thereof with being vertically off-center, the first guide portion 82 and the second guide portion 84 of the frame 12 provided at the other end thereof with being vertically positioned, while being guided in the longitudinal direction of the camera apparatus 10, the focus lens holder 54 can be moved in a stable state.

In addition, the zoom lens holder 52 also functions in the same manner as the focus lens holder 54.

Although the first and second protruding

portions

94, 96 are formed in a hemispherical shape, they may be formed in other shapes such as a dice. In addition, although the first projecting portion 94 and the second projecting portion 96 are provided at two positions, only one or more than three positions may be provided. In addition, the first and second protruding

portions

94 and 96 may be formed on other materials such as metal, and may be fixed to the zoom lens holder 52 and the focus lens holder 54. Lubrication may also be provided to at least one of the first raised area 94, the second raised area 96, or the first guide area 82, the second guide area 84. Although the first and

second guide portions

82 and 84 are formed to have a shape protruding from the corners, the first and

third sides

22 and 26 may be formed as the first and

second guide portions

82 and 84 in a non-protruding state so as to directly abut against the first and second guided

portions

86 and 88.

In addition, although the drive shafts 62 are disposed in the longitudinal direction in a manner different from each other in the process of disposing the actuators 58, they may be disposed in the same orientation. The frame 12 is divided into five parts, i.e., the 1 st member 20 to the 5 th member 36, but other division may be performed.

The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.

Claims

1. A camera device, wherein,

comprises a frame having a prism and a lens arranged therein,

the frame has a first member in which the prism is arranged and a second member in which the lens is arranged,

one end of the second member is fixed to the first member in the optical axis direction of the lens.

2. The camera device of claim 1,

the first member and the second member are integrated by the second member being fixed to the first member.

3. The camera device according to claim 1 or 2,

the frame also has a third part to hold the image sensor,

the third member is fixed to the other end of the second member in the optical axis direction of the lens.

4. The camera device of claim 3,

the first member, the second member, and the third member are integrated as a result of the second member being fixed to the first member and the third member being fixed to the second member.

5. The camera device according to claim 1 or 2,

a light receiving window is formed in an upper surface of the first member, and the prism is disposed below the light receiving window.

6. The camera device according to claim 1 or 2,

the second member has a first portion constituting a bottom surface and a side surface standing vertically from the bottom surface, and a second portion constituting an upper surface.

7. The camera device of claim 6,

has a lens holder supporting the lens, the lens holder being sandwiched in the up-down direction between the first portion constituting the bottom surface and the side surface standing upright from the bottom surface and the second portion constituting the upper surface.

8. The camera device of claim 3,

light rays incident from above are guided to the lens via the prism and imaged on the image sensor by the lens.

9. The camera device according to claim 1 or 2,

the lenses include a zoom lens and a focus lens.

10. The camera device according to claim 1 or 2,

inside the second member, a position detector that detects a position of the lens is further provided, the position detector including a magnetic pole member and an MR sensor.

11. An electronic apparatus having the camera device according to any one of claims 1 to 10.