CN215575885U

CN215575885U - Lens driving device, image pickup device, and electronic apparatus

Info

Publication number: CN215575885U
Application number: CN202121368043.7U
Authority: CN
Inventors: 袁斌; 代迪; 钱宇恒
Original assignee: New Shicoh Motor Co Ltd
Current assignee: New Shicoh Motor Co Ltd
Priority date: 2021-06-18
Filing date: 2021-06-18
Publication date: 2022-01-18
Anticipated expiration: 2031-06-18

Abstract

The utility model discloses a lens driving device, a camera device and electronic equipment, wherein the lens driving device comprises a shell, a carrier and a coil assembly, an installation space is defined in the shell, the carrier is arranged in the installation space and is used for carrying a lens of the lens driving device so as to drive the lens to move relative to the shell, the coil assembly comprises a first coil and a second coil, the first coil is fixedly arranged outside the installation space, the second coil is arranged in the installation space and is fixedly arranged on the carrier, and the first coil and the second coil are matched for inducing the position of the second coil. The lens driving device is convenient to realize reasonable layout and has good applicability.

Description

Lens driving device, image pickup device, and electronic apparatus

Technical Field

The present invention relates to the field of imaging technologies, and in particular, to a lens driving device, an imaging device, and an electronic apparatus.

Background

An electronic device such as a mobile phone can adjust the position of a lens through a lens driving device to realize focusing. In the related art, the lens driving device has an auto-focusing function, but the lens driving device is not reasonable in layout, resulting in a large volume and a large occupied space, so that the lens driving device is not good in applicability, and the use of the lens driving device is limited.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a lens driving device which is convenient to realize reasonable layout and has good applicability.

The utility model also provides an image pickup device with the lens driving device.

The utility model also provides an electronic device with the lens driving device.

A lens driving apparatus according to an embodiment of a first aspect of the present invention includes: a housing defining an installation space therein; the carrier is arranged in the mounting space and is used for carrying a lens of the lens driving device so as to drive the lens to move relative to the shell; the coil pack, the coil pack includes first coil and second coil, first coil set firmly in outside the installation space, the second coil is located in the installation space and set firmly in the carrier, first coil with the cooperation of second coil is in order to be used for the response the position of second coil.

According to the gasket of the lens driving device provided by the embodiment of the utility model, the first coil and the second coil are arranged and matched to sense the position of the carrier, so that the automatic focusing is convenient to realize, the first coil is fixedly arranged outside the installation space, and the second coil is arranged in the installation space and fixedly arranged on the carrier, so that the internal space of the shell can be saved, the reasonable layout of the lens driving device is facilitated, and the applicability of the lens driving device is improved.

In some embodiments, a distance h between the first coil and the second coil in an axial direction of the lens satisfies 0.5mm ≦ h ≦ 5 mm.

In some embodiments, an outer surface of the housing is formed with a first receiving groove, and at least a portion of the first coil is located within the first receiving groove.

In some embodiments, the housing comprises: a housing; the first base and the shell are arranged along the axial direction of the lens so as to jointly define the installation space, and the first accommodating groove is formed on one side of the first base, which is far away from the shell.

In some embodiments, the depth of the first accommodating groove is T, the thickness of the first base in the axial direction of the lens is T, and T/T is greater than or equal to 0.05 and less than or equal to 0.2.

In some embodiments, the first mount is a piece of non-magnetic material.

In some embodiments, the lens driving apparatus further includes: the second base is fixedly arranged outside the installation space, a second accommodating groove is formed in the second base, and at least part of the first coil is located in the second accommodating groove.

In some embodiments, a first receiving groove is formed in an outer surface of the housing, the first receiving groove and the second receiving groove are oppositely arranged, the first coil is respectively matched with the first receiving groove and the second receiving groove, and in an axial direction of the lens, a height h1 of the first coil located in the first receiving groove and a height h2 of the first coil located in the second receiving groove satisfy 0.2 ≤ h1/h2 ≤ 0.4.

An image pickup apparatus according to an embodiment of a second aspect of the present invention includes the lens driving apparatus according to the above-described embodiment of the first aspect of the present invention.

According to the camera device provided by the embodiment of the utility model, the reasonable layout of the camera device is convenient to realize and the applicability is improved by adopting the lens driving device.

An electronic apparatus according to an embodiment of a third aspect of the present invention includes the lens driving device according to the embodiment of the second aspect of the present invention described above.

According to the electronic equipment provided by the embodiment of the utility model, the lens driving device is adopted, so that the reasonable layout of the electronic equipment is convenient to realize, and the applicability is improved.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic view of a lens driving apparatus according to an embodiment of the present invention;

fig. 2 is a sectional view of the lens driving apparatus shown in fig. 1;

FIG. 3 is an enlarged view of portion A circled in FIG. 2;

fig. 4 is an exploded view of the lens driving apparatus shown in fig. 1;

fig. 5 is another exploded view of the lens driving apparatus shown in fig. 1;

FIG. 6 is a schematic diagram of an electronic device according to one embodiment of the utility model.

Reference numerals:

electronic device 300, imaging apparatus 200, lens drive apparatus 100, and method of driving the same,

A housing 1, an installation space 10, a casing 11, a first base 12, a first receiving groove 12a,

A carrier 2,

A coil block 3, a first coil 31, a second coil 32,

A second base 4 and a second accommodating groove 4 a.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

The following disclosure provides many different embodiments, or examples, for implementing different features of the utility model. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the applicability of other processes and/or the use of other materials.

Next, a lens driving device 100 according to an embodiment of the first aspect of the present invention is described with reference to the drawings.

As shown in fig. 1, 2, 4 and 5, the lens driving apparatus 100 includes a housing 1, a carrier 2 and a coil assembly 3, the housing 1 defining an installation space 10 therein, the carrier 2 being provided in the installation space 10, and the carrier 2 is used for carrying the lens of the lens driving device 100 to drive the lens to move relative to the housing 1, so as to realize focusing, the coil assembly 3 includes a first coil 31 and a second coil 32, the first coil 31 is fixedly arranged outside the installation space 10, the first coil 31 is kept stationary relative to the housing 1, the second coil 32 is arranged in the installation space 10, and the second coil 32 is fixed on the carrier 2, the first coil 31 and the second coil 32 are matched for inducing the position of the second coil 32, therefore, the current actual position of the carrier 2 can be detected in real time, and corresponding adjustment can be conveniently made according to the current actual position of the carrier 2, so that the focusing effect is ensured, and the automatic focusing of the lens driving device 100 is conveniently realized.

Since the first coil 31 is fixedly disposed outside the installation space 10, the first coil 31 does not occupy the space of the installation space 10, so as to make more space for disposing other components of the lens driving apparatus 100, which is beneficial to the reasonable layout of the lens driving apparatus 100.

For example, the first coil 31 is energized, the second coil 32 is not energized, the first coil 31 generates a magnetic field, when the carrier 2 drives the lens to move relative to the housing 1, the carrier 2 may drive the second coil 32 to move relative to the first coil 31, and the second coil 32 may cut a magnetic induction line of the first coil 31 corresponding to the magnetic field, so that the second coil 32 generates an induction signal, at this time, the current actual position of the second coil 32 relative to the first coil 31 may be determined by obtaining the induction signal of the second coil 32, so as to obtain the current actual position of the carrier 2, and then, the current actual position of the carrier 2 may be compared with the expected position, determine whether the carrier 2 is in the expected position, and make a subsequent corresponding adjustment: for example, if the current actual position of the carrier 2 deviates from the expected position, the carrier 2 is controlled to approach towards the predetermined position to achieve the autofocus.

According to the lens driving device 100 of the embodiment of the utility model, the first coil 31 and the second coil 32 are arranged, and the first coil 31 and the second coil 32 are matched to sense the position of the carrier 2, so that the automatic focusing is convenient to realize, and the first coil 31 is fixedly arranged outside the installation space 10, and the second coil 32 is arranged in the installation space 10 and fixedly arranged on the carrier 2, so that the internal space of the shell 1 can be saved, the reasonable layout of the lens driving device 100 is facilitated, the volume of the lens driving device 100 can be reduced to a certain extent, the occupied space is reduced, and the applicability of the lens driving device 100 is improved.

In some embodiments, as shown in fig. 2, in the axial direction of the lens, the distance h between the first coil 31 and the second coil 32 satisfies 0.5mm ≦ h ≦ 5mm, so that the first coil 31 and the second coil 32 have a suitable induction distance therebetween to effectively ensure the mutual induction effect between the first coil 31 and the second coil 32.

In some embodiments, as shown in fig. 2, 3 and 5, the first receiving groove 12a is formed on the outer surface of the housing 1, at least a portion of the first coil 31 is located in the first receiving groove 12a, and a portion of the first coil 31 is located in the first receiving groove 12a, or the entire first complete turn is located in the first receiving groove 12a, which is beneficial to reducing the occupied space of the first coil 31, reducing the thickness and volume of the lens driving apparatus 100, and facilitating the miniaturization design of the lens driving apparatus 100, and may reduce the distance between the first coil 31 and the second coil 32, thereby being beneficial to ensuring the mutual inductance effect between the first coil 31 and the second coil 32, and ensuring the reliable use of the lens driving apparatus 100.

In addition, the first accommodation groove 12a can limit the first coil 31 to a certain extent, which is convenient for arrangement and installation of the first coil 31. The inner edge of first holding tank 12a can be equipped with spacing muscle to promote the spacing reliability to first coil 31, spacing muscle can be formed into annular structure, or spacing muscle includes the spacing section of a plurality of arcs that set up along the 12 circumference intervals of first holding tank.

In some embodiments, as shown in fig. 1 to 3, the housing 1 includes an outer shell 11 and a first base 12, the first base 12 and the outer shell 11 are disposed along an axial direction of the lens to jointly define the mounting space 10, and a first receiving groove 12a is formed on a side of the first base 12 away from the outer shell 11, so that the first receiving groove 12a may be formed by a portion of a surface of the side of the first base 12 away from the outer shell 11 being recessed toward the outer shell 11, so as to facilitate processing of the first receiving groove 12 a.

In some embodiments, as shown in fig. 3, the depth of the first receiving groove 12a is T, the thickness of the first base 12 in the axial direction of the lens is T, and T/T is greater than or equal to 0.05 and less than or equal to 0.2, the depth of the first receiving groove 12a is set reasonably, so that the situation that the volume of the lens driving device 100 is reduced to a limited extent due to too small depth of the first receiving groove 12a can be avoided, and the situation that the first base 12 is excessively weakened due to too large depth of the first receiving groove 12a can also be avoided, so that the volume of the lens driving device 100 is reduced to the maximum extent on the premise that the structural strength of the first base 12 is ensured, and the distance between the first coil 31 and the second coil 32 is effectively reduced.

In some embodiments, the first base 12 is made of a non-magnetic material, so that the first base 12 does not affect the inductance between the first coil 31 and the second coil 32, thereby ensuring effective mutual inductance between the first coil 31 and the second coil 32. For example, the first base 12 may be a plastic component, which facilitates the processing and forming of the first base 12, and has a low cost.

In some embodiments, as shown in fig. 2 to 4, the lens driving device 100 further includes a second base 4, the second base 4 is fixedly disposed outside the installation space 10, so that the second base 4 remains stationary relative to the housing 1, the second base 4 is formed with a second receiving groove 4a, at least a portion of the first coil 31 is located in the second receiving groove 4a, and a portion of the first coil 31 is located in the second receiving groove 4a, or the entire first coil is located in the second receiving groove 4a, which is beneficial to reducing an occupied space of the first coil 31, reducing a volume of the lens driving device 100, and facilitating a miniaturized design of the lens driving device 100.

In addition, the second receiving groove 4a can limit the first coil 31 to a certain extent, which is convenient for arrangement and installation of the first coil 31.

In some embodiments, as shown in fig. 2 to 5, the outer surface of the housing 1 is formed with a first receiving groove 12a, the first receiving groove 12a and the second receiving groove 4a are oppositely disposed, the first receiving groove 12a and the second receiving groove 4a may define a receiving cavity, the first coil 31 is respectively engaged with the first receiving groove 12a and the second receiving groove 4a, a part of the first coil 31 can be located in the first receiving groove 12a, another part of the first coil 31 can be located in the second receiving groove 4a, the housing 1 and the second base 4 can effectively shield the first coil 31, so as to implement the hidden design of the first coil 31, so as to effectively protect the first coil 31, meanwhile, the structural strength of the housing 1 and the second base 4 can be prevented from being affected by the excessive depth of the first accommodating groove 12a and the second accommodating groove 4a, so that the structural stability of the lens driving device 100 can be ensured.

In the axial direction of the lens, the height h1 of the first coil 31 in the first accommodating groove 12a and the height h2 of the first coil 31 in the second accommodating groove 4a satisfy 0.2 ≤ h1/h2 ≤ 0.4, which facilitates the arrangement of the first coil 31 to be more reasonable and ensures the structural strength of the lens driving device 100.

An image pickup apparatus 200 according to an embodiment of the second aspect of the present invention, as shown in fig. 6, includes the lens driving apparatus 100 according to the above-described embodiment of the first aspect of the present invention.

According to the image pickup device 200 of the embodiment of the utility model, by adopting the lens driving device 100, the reasonable layout of the image pickup device 200 is facilitated, and the applicability is improved.

An electronic device 300 according to an embodiment of the third aspect of the present invention, as shown in fig. 6, includes the lens driving apparatus 100 according to the above-described second aspect of the present invention.

According to the electronic device 300 of the embodiment of the utility model, by adopting the lens driving device 100, the reasonable layout of the electronic device 300 is facilitated, and the applicability is improved.

Furthermore, it should be noted that "electronic device 300" includes, but is not limited to, devices configured to receive/transmit communication signals via a wireline connection (e.g., via a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a digital cable, a direct cable connection, and/or another data connection/network) and/or via a Wireless interface (e.g., for a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and/or another communication terminal). Examples of electronic device 300 include, but are not limited to, a satellite or cellular telephone; personal Communications Systems (PCS) terminals that may combine cellular radiotelephones with data processing, facsimile, and data communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver.

The electronic device 300 may be various devices capable of acquiring data from the outside and processing the data, or the electronic device 300 may be various devices which have a built-in battery and can acquire current from the outside to charge the battery, such as a mobile phone, a tablet computer, a computing device, an information display device, or the like. The mobile phone is only an example of the electronic device 300, and the present application is not particularly limited thereto, and the present application may be applied to the electronic device 300 such as a mobile phone and a tablet computer, and the present application is not limited thereto.

Other constructions and operations of the electronic device 300 according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A lens driving apparatus, comprising:

a housing (1), the housing (1) defining an installation space (10) therein;

the carrier (2) is arranged in the mounting space (10) and is used for carrying a lens of the lens driving device (100) so as to drive the lens to move relative to the shell (1);

coil pack (3), coil pack (3) include first coil (31) and second coil (32), first coil (31) set firmly in outside installation space (10), second coil (32) are located in installation space (10) and set firmly in carrier (2), first coil (31) with second coil (32) cooperation is in order to be used for the response the position of second coil (32).

2. The lens driving device according to claim 1, wherein a spacing h between the first coil (31) and the second coil (32) in an axial direction of the lens satisfies 0.5mm ≦ h ≦ 5 mm.

3. The lens driving apparatus according to claim 1, wherein an outer surface of the housing (1) is formed with a first receiving groove (12a), and at least a part of the first coil (31) is located in the first receiving groove (12 a).

4. A lens driving apparatus according to claim 3, wherein the housing (1) comprises:

a housing (11);

a first base (12), the first base (12) and the housing (11) being disposed along an axial direction of the lens to define the mounting space (10) together, the first receiving groove (12a) being formed on a side of the first base (12) away from the housing (11).

5. The lens driving device according to claim 4, wherein the depth of the first receiving groove (12a) is T, the thickness of the first base (12) in the axial direction of the lens is T, and 0.05. ltoreq. T/T. ltoreq.0.2.

6. A lens driving device according to claim 4, wherein said first base (12) is a non-magnetic material member.

7. The lens driving apparatus according to any one of claims 1 to 6, further comprising:

the second base (4), the second base (4) set firmly outside installation space (10), second holding tank (4a) is formed in second base (4), at least part of first coil (31) is located in second holding tank (4 a).

8. The lens driving apparatus according to claim 7, wherein the housing (1) has a first receiving groove (12a) formed on an outer surface thereof, the first receiving groove (12a) and the second receiving groove (4a) are oppositely disposed, the first coil (31) is respectively engaged with the first receiving groove (12a) and the second receiving groove (4a), and a height h1 of the first coil (31) in the first receiving groove (12a) and a height h2 of the first coil (31) in the second receiving groove (4a) satisfy 0.2 ≦ h1/h2 ≦ 0.4 in the axial direction of the lens.

9. An image pickup apparatus characterized by comprising the lens driving apparatus (100) according to any one of claims 1 to 8.

10. An electronic device, characterized by comprising a lens driving apparatus (100) according to any one of claims 1-8.