CN114518636A

CN114518636A - Lens driving device, camera device and electronic apparatus

Info

Publication number: CN114518636A
Application number: CN202111308915.5A
Authority: CN
Inventors: 李朝阳; 余林涛; 曹宏; 张友
Original assignee: Ruien Photoelectric Co ltd
Current assignee: Ruien Photoelectric Co ltd
Priority date: 2021-11-05
Filing date: 2021-11-05
Publication date: 2022-05-20
Anticipated expiration: 2041-11-05

Abstract

The present disclosure provides a lens driving device for providing auto-focusing and optical anti-shake functions, comprising: a lens support for supporting at least one lens; the automatic focusing base is arranged on the outer side of the lens supporting part and used for realizing automatic focusing of the lens; a Y-direction anti-shake base provided with a Y-direction driving device so as to drive the auto-focusing base to move in a Y direction by the Y-direction driving device; and an X-direction anti-shake base provided with an X-direction driving device so as to drive the Y-direction anti-shake base to move in the X-direction by the X-direction driving device. The present disclosure also provides a camera device and an electronic apparatus.

Description

Lens driving device, camera device and electronic apparatus

Technical Field

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

Background

At present, most camera devices of mobile electronic products such as digital cameras, smart phones, or tablet computers have an Auto Focusing (AF) function. In addition, with the development of high precision and high magnification of cameras, Optical Image Stabilization (OIS) is required for photographing or imaging using a smart phone or the like.

Conventionally, in a lens driving device of a camera device, optical anti-shake in an X-axis direction and a Y-axis direction of the camera device is generally realized by a combined action of a piezoelectric driving device of sidm (smooth image drive mechanism) and a plurality of ball holding mechanisms.

However, the inventors have found that in the lens driving device having the above structure, the ball following property in the ball holding mechanism is poor, and when the lens is moved in the X-axis direction or the Y-axis direction, tilt may occur, resulting in a position detection error in the moving direction, and optical anti-shake control cannot be stably controlled, and particularly, when a gap between the hall element and the magnet in the position detecting device is changed, a detection error may occur, which makes it difficult to achieve correct optical anti-shake control.

Disclosure of Invention

In order to solve one of the above-described technical problems, the present disclosure provides a lens driving device, a camera device, and an electronic apparatus.

According to an aspect of the present disclosure, a lens driving apparatus for providing auto-focusing and optical anti-shake functions includes: a lens support for supporting at least one lens; the automatic focusing base is arranged on the outer side of the lens supporting part and used for realizing automatic focusing of the lens; a Y-direction anti-shake base provided with a Y-direction driving device so as to drive the auto-focusing base to move in a Y direction by the Y-direction driving device; and an X-direction anti-shake base provided with an X-direction driving device so as to drive the Y-direction anti-shake base to move in the X-direction by the X-direction driving device, wherein at least two Y-direction guide balls and a Y-direction limit guide portion are provided in the Y-direction, the Y-direction limit guide portion being spaced apart from the at least two Y-direction guide balls by a predetermined distance, the auto-focusing base being guided to move in the Y-direction by the at least two Y-direction guide balls and the Y-direction limit guide portion acting together; at least two X-direction guide balls and an X-direction limit guide portion are arranged in the X direction, the X-direction limit guide portion is spaced from the at least two X-direction guide balls by a preset distance, and the Y-direction anti-shake base is guided to move in the X direction through the combined action of the at least two X-direction guide balls and the X-direction limit guide portion.

According to at least one embodiment of the present disclosure, in a first lateral direction of the lens support part, the Y-direction driving device is disposed at the Y-direction anti-shake base and drives the auto-focus base; the X-direction driving device is disposed at the X-direction anti-shake base and drives the Y-direction anti-shake base in a second lateral direction of the lens support part.

According to at least one embodiment of the present disclosure, a first Y-direction guide ball and a second Y-direction guide ball are disposed in the Y-direction, and the first Y-direction guide ball and the second Y-direction guide ball are sandwiched between a lower surface of the third side extension of the auto focus base and an upper surface of the Y-direction anti-shake base; a first X-direction guide ball and a second X-direction guide ball are disposed in the X direction, and are sandwiched between a lower surface of the fourth side extension of the Y-direction anti-shake base and an upper surface of the X-direction anti-shake base.

According to at least one embodiment of the present disclosure, the upper surface of the Y-direction anti-shake base is provided with a first V-groove and a second V-groove, and the lower surface of the third side extension portion of the auto-focus base is provided with a first recess and a second recess, the first recess and the first V-groove are used for accommodating a first Y-direction guide ball, the second recess and the second V-groove are used for accommodating a second Y-direction guide ball, wherein the first recess is a cylindrical recess or an angular cylindrical recess capable of contacting only one surface with the first Y-direction guide ball, and the second recess is a conical recess having a conical surface contacting with the second Y-direction guide ball; the upper surface of the X-direction anti-shake base is provided with a third V-shaped groove and a fourth V-shaped groove, the lower surface of a fourth side extending portion of the Y-direction anti-shake base is provided with a third concave portion and a fourth concave portion, the third concave portion and the fourth V-shaped groove are used for containing a first X-direction guide ball, the fourth concave portion and the fourth V-shaped groove are used for containing a second X-direction guide ball, the third concave portion is a cylindrical concave portion or a corner cylindrical concave portion, only one surface of the third concave portion can be in contact with the first X-direction guide ball, and the fourth concave portion is a conical concave portion, the conical surface of the fourth concave portion is in contact with the second X-direction guide ball.

According to at least one embodiment of the present disclosure, in a third lateral direction of the lens support portion, a first position detection device is provided, and the first position detection device is configured to detect a relative position between the auto-focusing base and the Y-direction anti-shake base for position detection in the Y-direction, where the third lateral direction is opposite to the first lateral direction; and a second position detection device is arranged in a fourth lateral direction of the lens supporting part and used for detecting the relative position of the Y-direction anti-shaking base and the X-direction anti-shaking base so as to detect the position in the X direction, wherein the fourth lateral direction and the second lateral direction are opposite directions.

According to at least one embodiment of the present disclosure, the first position detecting device includes a first hall element and a first magnet, the first hall element is disposed at a side surface of the auto-focusing base, and the first magnet is disposed at an opposite side surface of the Y-direction anti-shake base; the second position detection device comprises a second Hall element and a second magnet, the second Hall element is arranged on the side surface of the X-direction anti-shaking base, and the second magnet is arranged on the opposite side surface of the Y-direction anti-shaking base.

According to at least one embodiment of the present disclosure, the Y-direction restriction guide is configured to guide a relative movement of the auto-focus base and the Y-direction anti-shake base in a Y-direction and restrict a relative movement of the auto-focus base and the Y-direction anti-shake base in an X-direction; the X-direction limiting guide part is used for guiding the relative movement of the Y-direction anti-shake base and the X-direction anti-shake base in the X direction and limiting the relative movement of the Y-direction anti-shake base and the X-direction anti-shake base in the Y direction.

According to at least one embodiment of the present disclosure, the Y-direction restriction guide portion is configured by a first oblong hole provided in a first side extension of the autofocus base, and a first guide pin provided in the Y-direction anti-shake base, an extension direction of the first oblong hole is the Y-direction, and movement of the first guide pin is restricted and guided by the first oblong hole;

the X-direction restriction guide portion includes a second elongated circular hole provided in a second side extension of the Y-direction anti-shake base, and a second guide pin provided in the X-direction anti-shake base, and the second elongated circular hole extends in the X direction, and movement of the second guide pin is restricted and guided by the second elongated circular hole.

According to another aspect of the present disclosure, the camera apparatus includes: the lens driving device of any one of the above, and a lens; the lens driving device can drive the lens to move, and the focusing of the camera device is realized.

According to still another aspect of the present disclosure, the electronic device includes the camera apparatus described above.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.

Fig. 1 is a schematic structural view of a lens driving apparatus according to an embodiment of the present disclosure.

Fig. 2 is a schematic structural diagram of a lens driving apparatus according to an embodiment of the present disclosure.

Fig. 3 is a schematic structural view of a lens driving apparatus according to an embodiment of the present disclosure.

Detailed Description

The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. Technical solutions of the present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Unless otherwise indicated, the illustrated exemplary embodiments/examples are to be understood as providing exemplary features of various details of some ways in which the technical concepts of the present disclosure may be practiced. Accordingly, unless otherwise indicated, features of the various embodiments may be additionally combined, separated, interchanged, and/or rearranged without departing from the technical concept of the present disclosure.

The use of cross-hatching and/or shading in the drawings is generally used to clarify the boundaries between adjacent components. As such, unless otherwise noted, the presence or absence of cross-hatching or shading does not convey or indicate any preference or requirement for a particular material, material property, size, proportion, commonality between the illustrated components and/or any other characteristic, attribute, property, etc., of a component. Further, in the drawings, the size and relative sizes of components may be exaggerated for clarity and/or descriptive purposes. While example embodiments may be practiced differently, the specific process sequence may be performed in a different order than that described. For example, two consecutively described processes may be performed substantially simultaneously or in an order reverse to the order described. In addition, like reference numerals denote like parts.

When an element is referred to as being "on" or "on," "connected to" or "coupled to" another element, it can be directly on, connected or coupled to the other element or intervening elements may be present. However, when an element is referred to as being "directly on," "directly connected to" or "directly coupled to" another element, there are no intervening elements present. For purposes of this disclosure, the term "connected" may refer to physically, electrically, etc., and may or may not have intermediate components.

For descriptive purposes, the present disclosure may use spatially relative terms such as "below … …," below … …, "" below … …, "" below, "" above … …, "" above, "" … …, "" higher, "and" side (e.g., as in "sidewall") to describe one component's relationship to another (other) component as illustrated in the figures. Spatially relative terms are intended to encompass different orientations of the device in use, operation, and/or manufacture in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below … …" can encompass both an orientation of "above" and "below". Further, the devices may be otherwise positioned (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, when the terms "comprises" and/or "comprising" and variations thereof are used in this specification, the presence of stated features, integers, steps, operations, elements, components and/or groups thereof are stated but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groups thereof. It is also noted that, as used herein, the terms "substantially," "about," and other similar terms are used as approximate terms and not as degree terms, and as such, are used to interpret inherent deviations in measured values, calculated values, and/or provided values that would be recognized by one of ordinary skill in the art.

It should be noted that, unless conflicting, the technical features in the embodiments of the present invention may be combined with each other.

According to one embodiment of the present disclosure, there is provided a lens driving device by which an autofocus function and an optical anti-shake function of an optical lens can be realized, that is, an autofocus function, a shake correction function, and the like can be simultaneously performed by driving the optical lens by the lens driving device.

Fig. 1 illustrates a lens driving apparatus according to an embodiment of the present disclosure. As shown in fig. 1, the lens driving apparatus may include a lens supporting part 100, an auto-focus base 200, a Y-direction anti-shake base 300, and an X-direction anti-shake base 400.

The lens support 100 may be in the form of a frame for supporting at least one lens, for example one or more lenses may be mounted inside the lens support.

The auto-focus base 200 may be disposed at an outer side of the lens support part 100 for implementing auto-focus of the lens. Further, an optical axis direction driving device 120 may be disposed therebetween so that the lens support section 100 may be moved in the optical axis direction by a supplied voltage, thereby implementing an auto-focusing function. The optical axis direction driving means 120 may be formed with a magnet portion provided at the lens supporting portion 100 and an excitation portion provided at the auto-focus base 200, and a magnetic field is generated by the excitation portion, and the generated magnetic field interacts with the magnet portion, thereby pushing the lens supporting portion 100 to move in the optical axis direction. Alternatively, the number of the optical axis direction driving devices 120 may be set to two, and two optical axis direction driving devices 120 may be disposed at opposite sides of the lens support section 100, thereby providing more efficient driving.

In the present disclosure, the auto-focus base 200 and the Y-direction anti-shake base 300 cooperate to realize Y-direction anti-shake driving. Y-direction anti-shake base 300 may be provided with a Y-direction driving device 310, for example, Y-direction driving device 310 may be fixedly installed on Y-direction anti-shake base 300, wherein Y-direction driving device 310 may be a piezoelectric driving device, for example, a piezoelectric element may be fixedly installed on Y-direction anti-shake base 300, the piezoelectric element expands and contracts by an applied voltage, so as to drive a driving shaft connected thereto to expand and contract in Y-direction, so that auto-focus base 200 is driven to move in Y-direction by a friction member in friction contact with the driving shaft, wherein the friction member is fixedly connected with auto-focus base 200.

To guide the movement of the auto-focus base 200 in the Y direction. At least two Y-direction guide balls and Y-direction restriction guide portions are provided in the Y-direction. For example, two Y-direction guide balls and one Y-direction restriction guide portion are shown in the present disclosure. It will be appreciated by those skilled in the art that other numbers of forms may be employed. The Y-direction restriction guide is spaced apart from the at least two Y-direction guide balls by a predetermined distance, and guides the movement of the auto focus base 200 in the Y direction by the at least two Y-direction guide balls and the Y-direction restriction guide acting in common.

In the present disclosure, the Y-direction driving device 310 and the Y-direction guide balls are provided in two opposite side surfaces (e.g., opposite side surfaces with respect to the lens support portion). For example, the Y-direction driving device 310 may be disposed at a first lateral side of the lens support part 100, and the Y-direction guide ball may be disposed at a third lateral side of the lens support part 100. Wherein the first lateral direction and the third lateral direction are opposite sides.

As shown in fig. 1 and 2, the following description will be made taking two Y-direction guide balls as an example. A first Y-direction guide ball 320 and a second Y-direction guide ball 330. First and second Y-

direction guide balls

320 and 330 may be disposed, for example, in a sandwiched manner between the auto-focus base 200 and the Y-direction anti-shake base 300. As one example, the first and second Y-

direction guide balls

320 and 330 are sandwiched between the lower surface of the third side extension 210 of the auto-focus base 200 and the upper surface of the Y-direction anti-shake base 300. For example, two third side extension portions 210 may be provided to correspond to the first and second Y-

direction guiding balls

320 and 330, respectively. By providing the third side extension portion 210, the bottom surfaces of the auto-focusing base 200 and the Y-direction anti-shake base 300 can be in the same horizontal plane, which can make the size of the product thinner, thereby reducing the relative protrusion of the auto-focusing base 200 and the Y-direction anti-shake base 300. Further, the first and second Y-

direction guide balls

320 and 330 may be provided with a magnetic attraction member so that the first and second Y-

direction guide balls

320 and 330 are clamped between the lower surface of the third side extension 210 of the auto focus base 200 and the upper surface of the Y-direction anti-shake base 300.

As an alternative embodiment, the upper surface of the Y-direction anti-shake base 300 is provided with a first V-groove 321 and a second V-groove 331, and the lower surface of the third side extension of the auto-focus base 200 is provided with a first recess 322 and a second recess 332, the first recess 322 and the first V-groove 321 receiving the first Y-direction guide ball 320, and the second recess 332 and the second V-groove 331 receiving the second Y-direction guide ball 330. The first concave portion 322 is a cylindrical concave portion or a horn-cylindrical concave portion which can be in contact with only one surface of the first Y-direction guide ball 320, and the second concave portion 332 is a conical concave portion in which a tapered surface is in contact with the second Y-direction guide ball. With this arrangement, the first Y-direction guide balls 320 can be guided by the first recesses 322 and the first V-grooves 321 to move only in the extending direction of the first V-grooves 321. And the second recess 332 and the second V-groove 331 may allow the second Y-direction guide ball 330 to move away from the second V-groove 331. That is, the first Y-direction guide ball 320 is restricted in the first V-groove 321 by the first recess 322 and the first V-groove 321, and the second recess 332 and the second V-groove 331 do not restrict the moving direction of the second Y-direction guide ball 330. This can prevent an increase in the moving resistance caused in the case where both the Y-direction guide balls are restricted in the moving direction, thus performing the restriction guide by one while the other provides a redundant amount of movement.

The Y-direction restriction guide 340 serves to guide the relative movement of the auto focus base 200 and the Y-direction anti-shake base 300 in the Y-direction and restrict the relative movement of the auto focus base 200 and the Y-direction anti-shake base 300 in the X-direction. The Y-direction restriction guide 340 may be disposed at a position distant from the Y-direction guide ball so that the relative movement of the auto-focus base 200 and the Y-direction anti-shake base 300 is guided and restricted by the Y-direction restriction guide 340 and the Y-direction guide ball.

In one embodiment of the present disclosure, the Y-direction restriction guide part 340 may be disposed in a nearly diagonal manner with respect to the lens support part 100 with the Y-direction guide ball. For example, the Y-direction restriction guide 340 is disposed in the first lateral direction of the lens support part 100. The Y-direction restriction guide 340 is composed of a first oblong hole 341 provided in a first side extension of the autofocus base, and a first guide pin 342 provided in the Y-direction anti-shake base 300. The extending direction of the first oblong hole 341 is the Y direction and the movement of the first guide pin 342 is restricted and guided by the first oblong hole 341. For example, the first guide pin 342 may move in the Y direction along the first oblong hole 341 extending in the Y direction, and the first guide pin 342 and the first oblong hole 341 are not provided with a gap or have a small gap in the X direction to prevent the first guide pin 342 and the first oblong hole 341 from moving relative to each other in the X direction.

By providing the Y-direction restriction guide portion 340 and the Y-direction guide ball, the Y-direction guide can be performed more efficiently. Also, as described below, position detection can be made more accurate.

In a third lateral direction (a lateral direction opposite to the first lateral direction) of the lens support portion 100, a first position detection device 350 is disposed, and the first position detection device 350 is configured to detect a relative position between the auto-focus base 200 and the Y-direction anti-shake base 300, so as to perform position detection in the Y-direction. The first position detecting device 350 includes a first hall element 351 provided at a side surface of the auto-focus base 200 and a first magnet 352 provided at an opposite side surface of the Y-direction anti-shake base 300. In addition, the arrangement may be reversed.

In the present disclosure, by the provision of the Y-direction restriction guide 340 and the Y-direction guide balls, not only can the relative relationship between the autofocus base 200 and the Y-direction anti-shake base 300 be effectively guided in the Y-direction, but also the gap interval between the first hall element 351 and the first magnet 352 can be ensured. For example, the movement of the auto-focus base 200 and the Y-direction anti-shake base 300 relative to the X-direction can be prevented by the interaction of the first oblong hole 341 and the first guide pin 342, so that the auto-focus base 200 and the Y-direction anti-shake base 300 can be always kept at the same gap, which can ensure that the gap interval between the first hall element 351 and the first magnet 352 is constant.

In the present disclosure, the Y-direction anti-shake base 300 and the X-direction anti-shake base 400 cooperate to realize the X-direction anti-shake driving. The X-direction anti-shake base 400 may be provided with an X-direction driving device 410, for example, the X-direction driving device 410 may be fixedly installed on the X-direction anti-shake base 400, wherein the X-direction driving device 410 may be a piezoelectric driving device, for example, a piezoelectric element may be fixedly installed on the X-direction anti-shake base 400, the piezoelectric element stretches and contracts by an applied voltage, so as to drive a driving shaft connected thereto to stretch and contract in the X-direction, so as to drive the Y-direction anti-shake base 300 to move in the X-direction by a friction member in friction contact with the driving shaft, wherein the friction member is fixedly connected with the Y-direction anti-shake base 300.

The Y-direction anti-shake base 300 is moved in the X-direction for guidance. At least two X-direction guide balls and an X-direction restricting guide portion are provided in the X-direction. For example, two X-direction guide balls and one X-direction restriction guide portion are shown in the present disclosure. It will be appreciated by those skilled in the art that other numbers of forms may be employed. The X-direction restriction guide is spaced apart from the at least two X-direction guide balls by a predetermined distance, and guides the Y-direction anti-shake base 300 to move in the X-direction by the at least two X-direction guide balls and the X-direction restriction guide acting in common.

In the present disclosure, the X-direction driving device 410 and the X-direction guide balls are provided in two opposite side surfaces (e.g., opposite side surfaces with respect to the lens support section). For example, the Y-direction driving device 410 may be disposed at a second lateral side of the lens support part 100, and the X-direction guide ball may be disposed at a fourth lateral side of the lens support part 100. Wherein the second lateral direction and the fourth lateral direction are opposite sides.

As shown in fig. 1 and 3, the following description will be made taking two X-direction guide balls as an example. A first X-direction guide ball 420 and a second X-direction guide ball 430. The first and second

X-direction guide balls

420 and 430 may be disposed between the Y-direction anti-shake base 300 and the X-direction anti-shake base 400, for example, in a sandwiched manner. As one example, the first and second

X-direction guide balls

420 and 430 are sandwiched between the lower surface of the fourth side extension 301 of the Y-direction anti-shake base 300 and the upper surface of the X-direction anti-shake base 400. For example, one or two fourth side extension portions 301 may be provided corresponding to the first and second

X-direction guide balls

420 and 430, respectively. Further, the first and second

X-direction guide balls

420 and 430 may be provided with a magnetic attraction member so that the first and second

X-direction guide balls

420 and 430 are clamped between the lower surface of the fourth side extension 301 of the Y-direction anti-shake base 300 and the upper surface of the X-direction anti-shake base 400.

As an alternative embodiment, the upper surface of the X-direction anti-shake base 400 is provided with a third V-groove 421 and a fourth V-groove 431, and the lower surface of the fourth side extension of the Y-direction anti-shake base 300 is provided with a third recess 422 and a fourth recess 432, the third recess 422 and the third V-groove 421 being used to accommodate the first X-direction guide ball 420, and the fourth recess 432 and the fourth V-groove 431 being used to accommodate the second X-direction guide ball 430. The third concave portion 422 is a cylindrical concave portion or a horn-cylindrical concave portion which can be brought into contact with only one surface of the first X-direction guide ball 420, and the fourth concave portion 432 is a conical concave portion in which a tapered surface is brought into contact with the second X-direction guide ball. With this arrangement, the first X-direction guide ball 420 can be guided by the third recess 422 and the third V-groove 421 to move only in the extending direction of the third V-groove 421. And the fourth recess 432 and the fourth V-groove 431 may allow the second X-direction guide ball 430 to move away from the fourth V-groove 431. That is, the first X-direction guide ball 420 is restricted in the third V-groove 421 by the third recess 422 and the third V-groove 421, and the fourth recess 432 and the fourth V-groove 431 do not restrict the moving direction of the second X-direction guide ball 430. This can prevent an increase in the moving resistance caused in the case where both the X-direction guide balls are restricted in the moving direction, thus performing the restricting guide by one while the other provides the redundancy of movement.

The X-direction restriction guide 440 guides the relative movement of the Y-direction anti-shake base 300 and the X-direction anti-shake base 400 in the X-direction and restricts the relative movement of the Y-direction anti-shake base 300 and the X-direction anti-shake base 400 in the Y-direction. The X-direction restriction guide 440 may be disposed at a position distant from the X-direction guide ball so that the relative movement of the Y-direction anti-shake base 300 and the X-direction anti-shake base 400 is guided and restricted by the X-direction restriction guide 440 and the X-direction guide ball.

In one embodiment of the present disclosure, the X-direction restriction guide 440 may be disposed in a nearly diagonal manner with respect to the lens support part 100 with the X-direction guide ball. For example, the X-direction restriction guide 440 is disposed at the second lateral side of the lens support part 100. The X-direction restricting guide 440 includes a second oblong hole 441 provided in a second side extension of the Y-direction anti-shake base 300, and a second guide pin 442 provided in the X-direction anti-shake base 400. The extending direction of the second elongated hole 441 is the X direction and the movement of the second guide pin 442 is restricted and guided by the second elongated hole 441. For example, the second guide pin 442 may move in the X direction along a second elongated hole 441 extending in the X direction, and the second guide pin 442 and the second elongated hole 441 are not provided with a gap or have a small gap in the Y direction to prevent relative movement of the second guide pin 442 and the second elongated hole 441 in the Y direction. Wherein the first and second guide pins 342, 442 may be cylindrical.

By providing the X-direction restriction guide 440 and the X-direction guide balls, the X-direction guide can be performed more efficiently. Also, as described below, the position detection can be made more accurate.

In a fourth lateral direction (a lateral direction opposite to the second lateral direction) of the lens support portion 100, a second position detection device 450 is provided, and the second position detection device 450 is used for detecting a relative position between the Y-direction anti-shake base 300 and the X-direction anti-shake base 400 to perform position detection in the X-direction. The second position detecting device 450 includes a second hall element 451 provided on a side surface of the X-direction anti-shake base 400 and a second magnet 452 provided on an opposite side surface of the Y-direction anti-shake base 300. In addition, the arrangement may be reversed.

In the present disclosure, by the arrangement of the X-direction restriction guide part 440 and the X-direction guide balls, not only can the relative relationship between the Y-direction anti-shake base 300 and the X-direction anti-shake base 400 be effectively guided in the X-direction, but also the gap interval between the second hall element 451 and the second magnet 452 can be ensured. For example, the interaction between the second oblong hole 441 and the second guide pin 442 prevents the Y-direction anti-shake base 300 and the X-direction anti-shake base 400 from moving in the Y-direction, so that the Y-direction anti-shake base 300 and the X-direction anti-shake base 400 can be always kept at the same gap, and the gap distance between the second hall element 451 and the second magnet 452 can be kept constant.

Therefore, the anti-shake function can be realized very smoothly through the integral arrangement in the disclosure, and the position detection in each direction can be more accurate.

In addition, an embodiment of the present invention further provides a camera apparatus, including: the lens driving device of any one of the above, and a lens; the lens driving device can drive the lens to move, and the focusing of the camera device is realized.

The embodiment of the invention also provides electronic equipment which comprises the camera device.

In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.

Claims

1. A lens driving device for providing auto-focusing and optical anti-shake functions, comprising:

a lens support for supporting at least one lens;

the automatic focusing base is arranged on the outer side of the lens supporting part and used for realizing automatic focusing of the lens;

a Y-direction anti-shake base provided with a Y-direction driving device so as to drive the auto-focusing base to move in a Y direction by the Y-direction driving device; and

an X-direction anti-shake base provided with an X-direction driving device so as to drive the Y-direction anti-shake base to move in an X-direction by the X-direction driving device,

wherein at least two Y-direction guide balls and a Y-direction limit guide portion are provided in the Y-direction, the Y-direction limit guide portion being spaced apart from the at least two Y-direction guide balls by a predetermined distance, the auto-focusing base being guided to move in the Y-direction by the at least two Y-direction guide balls and the Y-direction limit guide portion acting in common; at least two X-direction guide balls and an X-direction limit guide portion are disposed in the X direction, the X-direction limit guide portion is spaced apart from the at least two X-direction guide balls by a predetermined distance, and the Y-direction anti-shake base is guided to move in the X direction by the combined action of the at least two X-direction guide balls and the X-direction limit guide portion.

2. The lens driving device according to claim 1, wherein the Y-direction driving device is provided at the Y-direction anti-shake base and drives the auto-focus base in a first lateral direction of the lens supporting part; the X-direction driving device is disposed at the X-direction anti-shake base and drives the Y-direction anti-shake base in a second lateral direction of the lens support part.

3. The lens driving apparatus according to claim 2,

a first Y-direction guide ball and a second Y-direction guide ball are arranged in the Y direction, and are clamped between the lower surface of the third side extension part of the automatic focusing base and the upper surface of the Y-direction anti-shake base;

a first X-direction guide ball and a second X-direction guide ball are disposed in the X direction, and are sandwiched between a lower surface of the fourth side extension of the Y-direction anti-shake base and an upper surface of the X-direction anti-shake base.

4. The lens driving apparatus according to claim 3,

the upper surface of the Y-direction anti-shake base is provided with a first V-shaped groove and a second V-shaped groove, the lower surface of a third side extension part of the automatic focusing base is provided with a first concave part and a second concave part, the first concave part and the first V-shaped groove are used for accommodating a first Y-direction guide ball, the second concave part and the second V-shaped groove are used for accommodating a second Y-direction guide ball, the first concave part is a cylindrical concave part or an angular cylindrical concave part, only one surface of the first concave part can be in contact with the first Y-direction guide ball, and the second concave part is a conical concave part, the conical surface of which is in contact with the second Y-direction guide ball;

the upper surface of the X-direction anti-shake base is provided with a third V-shaped groove and a fourth V-shaped groove, the lower surface of a fourth side extending portion of the Y-direction anti-shake base is provided with a third concave portion and a fourth concave portion, the third concave portion and the fourth V-shaped groove are used for containing a first X-direction guide ball, the fourth concave portion and the fourth V-shaped groove are used for containing a second X-direction guide ball, the third concave portion is a cylindrical concave portion or a corner cylindrical concave portion, only one surface of the third concave portion can be in contact with the first X-direction guide ball, and the fourth concave portion is a conical concave portion, the conical surface of the fourth concave portion is in contact with the second X-direction guide ball.

5. The lens driving apparatus according to claim 2,

a first position detection device is arranged in a third lateral direction of the lens supporting part and is used for detecting the relative position of the automatic focusing base and the Y-direction anti-shaking base so as to detect the position in the Y direction, wherein the third lateral direction is opposite to the first lateral direction;

and a second position detection device is arranged in a fourth lateral direction of the lens supporting part and used for detecting the relative position of the Y-direction anti-shaking base and the X-direction anti-shaking base so as to detect the position in the X direction, wherein the fourth lateral direction and the second lateral direction are opposite directions.

6. The lens driving apparatus as claimed in claim 5,

the first position detection device comprises a first Hall element and a first magnet, the first Hall element is arranged on the side surface of the automatic focusing base, and the first magnet is arranged on the opposite side surface of the Y-direction anti-shake base; the second position detection device comprises a second Hall element and a second magnet, the second Hall element is arranged on the side surface of the X-direction anti-shaking base, and the second magnet is arranged on the opposite side surface of the Y-direction anti-shaking base.

7. The lens driving apparatus according to claim 5 or 6,

the Y-direction limiting guide part is used for guiding the relative movement of the automatic focusing base and the Y-direction anti-shake base in the Y direction and limiting the relative movement of the automatic focusing base and the Y-direction anti-shake base in the X direction; the X-direction limiting guide part is used for guiding the relative movement of the Y-direction anti-shake base and the X-direction anti-shake base in the X direction and limiting the relative movement of the Y-direction anti-shake base and the X-direction anti-shake base in the Y direction.

8. The lens driving apparatus as claimed in claim 6,

the Y-direction restriction guide portion is configured by a first elongated hole provided in a first side extension of the autofocus base and a first guide pin provided in the Y-direction anti-shake base, the first elongated hole extending in the Y-direction, and movement of the first guide pin being restricted and guided by the first elongated hole;

9. A camera apparatus, comprising:

the lens driving device according to any one of claims 1 to 8; and

the lens driving device drives the lens to move, and automatic focusing and/or optical anti-shake of the camera device are achieved.

10. An electronic device characterized by comprising the camera apparatus of claim 9.