CN210781021U - Liquid lens focusing and anti-shaking device, camera module and electronic equipment - Google Patents
Liquid lens focusing and anti-shaking device, camera module and electronic equipment Download PDFInfo
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- CN210781021U CN210781021U CN201922226741.2U CN201922226741U CN210781021U CN 210781021 U CN210781021 U CN 210781021U CN 201922226741 U CN201922226741 U CN 201922226741U CN 210781021 U CN210781021 U CN 210781021U
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Abstract
The utility model discloses a focusing device, camera module and electronic equipment of liquid camera lens. Liquid lens focusing and anti-shake device includes: a liquid lens; the SMA actuator comprises an SMA wire, a connecting rod, a supporting part and a first elastic arm, wherein one end of the connecting rod is connected with the SMA wire, one end of the connecting rod is elastically connected with the supporting part, the first elastic arm is arranged between the connecting rod and the supporting part, and the first elastic arm can be elastically bent; the adjusting ring is connected with one end of the connecting rod, and the SMA wire can drive the adjusting ring to move through the connecting rod so as to contact and extrude the liquid lens. The actuator consisting of the SAM wire, the connecting rod, the supporting part and the first elastic arm drives the adjusting ring, so that the normal work of other electronic elements is not influenced by the electromagnetic interference; and the first elastic arm enables the connecting rod to elastically swing relative to the supporting part, so that the displacement of the adjusting ring can be larger than the contraction of the SMA wire, a larger focusing stroke can be realized under the condition that the volume of the actuator is smaller, and the miniaturization is facilitated.
Description
Technical Field
The utility model relates to an electron field, in particular to liquid camera lens are focused and anti-shake device, camera module and electronic equipment.
Background
The liquid lens generally includes an annular lens frame, a light-transmitting cover plate and a light-transmitting film which respectively seal two end surfaces of the annular lens frame, wherein liquid is packaged in the annular lens frame, and the liquid in the annular lens frame flows by contacting and extruding the light-transmitting film, so that the shape of the liquid can be changed, and further the curvature, the focal length and the like of the liquid lens are changed.
The camera module with the liquid lens generally further comprises an adjusting component and an actuator, wherein the adjusting component is arranged on one side of the liquid lens, which is provided with the light-transmitting film, and the actuator is used for driving the adjusting component to move so as to enable the adjusting component to be in contact with and be extruded or separated from the light-transmitting film. The actuators of the camera module typically employ voice coil motors or SMA actuators.
The voice coil motor generates driving force through Lorentz force generated by an electrified coil in a magnetic field, the camera module is usually provided with a sensor and other electronic components, and the electrified coil and the magnetic field in the voice coil motor generate electromagnetic interference to influence the normal operation of other electronic components to a certain extent.
The driving element in the SMA actuator is SMA (shape memory alloy), and the SMA is a material which has Shape Memory Effect (SME) through thermal elasticity, martensite phase transformation and inversion thereof and is composed of more than two metal elements; SMA can be deformed at a lower temperature, and can restore the shape before deformation after being electrified and heated, so that electrically-controlled contraction is realized, and further, driving force is generated. The existing SMA actuator usually pulls the adjusting assembly directly through the SMA wire, so the driving stroke of the adjusting assembly is usually not larger than the contraction amount of the SMA wire, and the movement stroke can be made larger only by increasing the whole scale of the SMA actuator, so the miniaturization of the liquid lens focusing device is not facilitated.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a great and compact structure's of drive stroke liquid camera lens focusing device, camera module and electronic equipment.
The technical scheme adopted for solving the technical problems is as follows:
liquid lens focusing and anti-shake device includes: a liquid lens which can change a curvature focal length by contact extrusion; the SMA actuator comprises an SMA wire, a connecting rod, a supporting part and a first elastic arm, wherein the SMA wire can be electrified and contracted, one end of the connecting rod is connected with the SMA wire, one end of the connecting rod is elastically connected with the supporting part, the first elastic arm is arranged between the connecting rod and the supporting part, and the first elastic arm can be elastically bent; the adjusting ring is arranged below the liquid lens, the SMA wire can be driven by contraction of the SMA wire to drive the connecting rod to swing relative to the supporting part, and the connecting rod can drive the adjusting ring to move so as to contact and extrude the liquid lens.
The liquid lens focusing and anti-shake device at least has the following beneficial effects:
the actuator consisting of the SAM wire, the connecting rod, the supporting part and the first elastic arm drives the adjusting ring, so that the normal work of other electronic elements is not influenced by the electromagnetic interference; and the first elastic arm enables the connecting rod to elastically swing relative to the supporting part, so that the displacement of the adjusting ring can be larger than the contraction of the SMA wire, and a larger focusing stroke can be realized under the condition that the volume of the actuator is smaller, thereby being beneficial to the miniaturization of the liquid lens focusing device.
In a possible embodiment of the present invention, the support portion, the first elastic arm, and the connecting rod are integrally formed by a conductive material. The support portion, the first elastic arm and the connecting rod are integrally formed, so that manufacturing difficulty and cost of the SMA actuator are reduced, the support portion, the first elastic arm and the connecting rod can be made of the SMA wire to be conductive through the conductive materials, and the overall circuit structure of the SMA actuator is simplified.
In a possible embodiment of the invention, the number of support portions, first resilient arms and connecting rods in the same SMA actuator is two and symmetrically arranged. The symmetrical arrangement of the supporting part, the first elastic arm and the connecting rod can enhance the movement stability of the driven piece.
In a possible embodiment of the present invention, the liquid lens focusing and anti-shake apparatus further includes a driven member, the adjusting ring is disposed on the driven member, and one end of the connecting rod is hinged to the driven member.
In a possible embodiment of the present invention, the liquid lens focusing and anti-shake apparatus comprises at least one first SMA actuator and at least one second SMA actuator, the first SMA actuator and the second SMA actuator being capable of driving the adjusting ring in opposite directions. The relative positions of the connecting rod, the SMA wire and the base body in the first SMA actuator and the second SMA actuator are different, so that the adjusting ring can be driven in opposite directions, the adjusting ring can be driven to move in multiple directions, and the camera module can be expanded in focusing and anti-shaking functions.
And the camera module comprises the liquid lens focusing and anti-shaking device.
The utility model discloses an in a possible embodiment, camera module is still including base and fixed camera lens, liquid camera lens sets up the base top, fixed camera lens is connected on the base, and is located liquid camera lens below, the SMA actuator is connected on the base, just the adjustable ring is in liquid camera lens with between the fixed camera lens to the realization is focused or anti-shake.
The utility model discloses an in a possible embodiment, liquid camera lens is focused and anti-shake device is still including adjusting part, adjusting part is including adjusting seat and spring, the driven piece does adjust the seat, the spring with adjust seat fixed connection, the spring is equipped with a plurality of second elastic arms, the one end of second elastic arm with the base is connected, the second elastic arm makes the spring-supported adjust the seat and make it is relative to adjust the seat the base is movable.
The electronic equipment comprises a liquid lens focusing and anti-shaking device.
An electronic device includes a camera module.
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 an exploded schematic view of a camera module according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a first SMA actuator according to an embodiment of the invention;
fig. 3 is a schematic structural diagram of a second SMA actuator according to an embodiment of the invention;
fig. 4 is a schematic structural diagram of a lens assembly according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a base according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a liquid lens according to an embodiment of the present invention;
reference numerals:
the SMA actuator 1 comprises an SMA wire 101, a connecting rod 102, a first elastic arm 103 and a support part 104;
the adjusting assembly 2, the adjusting seat 201, the spring 202 and the second elastic arm 204;
the base 3, a connecting column 301, a first mounting hole 302 and an open slot 303;
a cover 4 and a second mounting hole 401;
the liquid lens 5, a light-transmitting cover plate 501, an annular mirror frame 502, a light-transmitting film 503 and liquid 504;
adjusting ring 6, fixed lens 7.
Detailed Description
This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
Referring to fig. 1 to 6, a camera module, including the liquid lens focusing and anti-shake device.
The liquid lens focusing and anti-shake device comprises a liquid lens 5, an adjusting ring 6 and an SMA actuator 1.
The liquid lens 5 includes an annular frame 502, a light-transmitting cover plate 501 and a light-transmitting film 503 which respectively seal two end faces of the annular frame 502, the annular frame 502 is internally packaged with liquid 504, and the liquid 504 in the annular frame 502 flows by contacting and pressing the light-transmitting film 503, so that the shape of the liquid 504 can be changed, and further the curvature and the focal length of the liquid lens 5 can be changed.
The SMA actuator 1 comprises an SMA wire 101, a connecting rod 102, a first elastic arm 103 and a support part 104; the SMA wire 101 can be electrified and contracted, one end of the connecting rod 102 is connected with the SMA wire 101, and the included angle between the SMA wire 101 and the connecting rod 102 is larger than zero; one end of the connecting rod 102 is elastically connected with the supporting portion 104, the first elastic arm 103 is arranged between the connecting rod 102 and the supporting portion 104, and the first elastic arm 103 can be elastically bent.
The adjusting ring 6 is arranged below the liquid lens 5, the SMA wire 101 can drive the connecting rod 102 to swing relative to the supporting part 104 through contraction, and the connecting rod 102 can drive the adjusting ring 6 to move so as to contact and extrude the liquid lens 5.
The liquid lens focusing and anti-shaking device at least has the following beneficial effects:
the adjustment ring 6 is driven by the actuator composed of the SAM wire 101, the connecting rod 102, the supporting portion 104 and the first elastic arm 103, and the normal operation of other electronic components is not affected by the electromagnetic interference; in addition, the first elastic arm 103 enables the connecting rod 102 to elastically swing relative to the supporting part 104, and enables the displacement of the adjusting ring 6 to be larger than the contraction amount of the SMA wire 101, so that a larger focusing stroke can be realized under the condition that the actuator volume is smaller, and the miniaturization of the liquid lens focusing device is facilitated.
Regarding the support portion 104, the support portion 104 is fixed on the base 3, and the link 102 and the adjustment seat 201 are movable relative to the support portion 104.
As for the SMA wire 101, the SMA wire 101 is a shape memory alloy wire that can achieve length contraction before and after energization.
Regarding the first elastic arm 103, the first elastic arm 103 is made of an elastic material, and can be bent when the SMA wire 101 is contracted. The first elastic arm 103 is in a bar shape, one end of the first elastic arm 103 is connected to the support portion 104, and the other end is connected to the link 102.
With respect to the link 102, the link 102 is a rod having a certain rigidity, and supports the adjustment ring 6 and the like for displacement.
In the present embodiment, the support portion 104, the first elastic arm 103 and the link 102 are integrally molded by a conductive material. The support portion 104, the first elastic arm 103 and the connecting rod 102 are integrally formed, so that the manufacturing difficulty and cost of the SMA actuator 1 are reduced, and the support portion 104, the first elastic arm 103 and the connecting rod 102 can be made of conductive materials to be conductive to the SMA wire 101, so that the overall circuit structure of the liquid lens focusing device is simplified.
The support portion 104, the first elastic arm 103, and the link 102 are integrally formed of a metal material, and thus have both excellent elasticity and conductivity.
In the present embodiment, the number of the support portions 104, the first elastic arms 103, and the links 102 in the same SMA actuator 1 is two and symmetrically arranged. The symmetrical arrangement of the support portion 104, the first resilient arm 103 and the link 102 may enhance the stability of the movement of the driven member.
With respect to the SMA wire 101, both ends of the SMA wire 101 are respectively connected to one ends of two links 102 in the same SMA actuator 1, so that the two symmetrically arranged links 102 can be simultaneously driven when the SMA wire 101 contracts.
In this embodiment, in order to facilitate the connection between the adjusting ring 6 and the connecting rod 102, the liquid lens focusing apparatus further includes a driven member, the adjusting ring 6 is disposed on the driven member, and one end of the connecting rod 102 is hinged to the driven member.
Regarding the driven member, the driven member is the adjusting seat 201, a protruding hinge column is arranged on the adjusting seat 201, a hinge ring is arranged at one end of the connecting rod 102, the hinge ring is sleeved on the hinge column to form a hinge mechanism, and the adjusting ring 6 is fixedly connected to the adjusting seat 201. It will be appreciated that, as a practical matter, in other embodiments, the adjustment ring 6 may also be provided integrally with the adjustment seat 201.
In this embodiment, the SMA actuator 1 is divided into a first SMA actuator 10a and a second SMA actuator 10b, the SMA wire 101 of the first SMA actuator 10a being arranged between the connecting rod 102 and the base 3, and the connecting rod 102 of the second SMA actuator 10b being arranged between the SMA wire 101 and the base 3. The liquid lens focusing and anti-shake device comprises at least one first SMA actuator 10a and at least one second SMA actuator 10b, and due to the different relative positions of the connecting rod 102, the SMA wire 101 and the base 3 in the first SMA actuator 10a and the second SMA actuator 10b, the adjusting ring 6 can be driven in opposite directions, and the adjusting ring 6 can be driven to move in more directions, which is beneficial to expanding the focusing and anti-shake functions of the liquid lens focusing and anti-shake device.
With regard to the SMA actuators 1, preferably, each SMA actuator 1 surrounds the adjustment seat 201.
With respect to the liquid lens focusing and anti-shake apparatus, the first SMA actuators 10a are two in number and symmetrically arranged with respect to the adjustment mount 201, and the second SMA actuators 10b are two in number and symmetrically arranged with respect to the adjustment mount 201. The two first SMA actuators 10a and the two second SMA actuators 10b are respectively and symmetrically arranged about the adjusting base 201, and by respectively detecting or controlling each SMA actuator 1, the inclination angles and displacements of the adjusting base 201 and the adjusting ring 6 can be detected or controlled, which is beneficial to further expanding the anti-shake and focusing functions of the camera module.
With respect to the first and second SMA actuators 10a, 10b, the differences are contrastable from fig. 1, 2 and 3. When the SMA wire 101 contracts, the link 102 of the first SMA actuator 10a swings away from the base 3, thereby driving the adjustment mount 201 away from the base 3. When the SMA wire 101 contracts, the link 102 of the second SMA actuator 10b swings in a direction approaching the base 3, so that the adjustment seat 201 can be driven to approach the base 3.
In this embodiment, the camera module includes base 3 and fixed lens 7, liquid lens 5 sets up the base 3 top, fixed lens 7 is connected on the base 3, and is located liquid lens 5 below, SMA actuator 1 is connected on the base 3, just adjustable ring 6 is in liquid lens 5 with between the fixed lens 7, liquid lens focus and anti-shake device can drive adjustable ring 6 moves, and then contacts and extrudes liquid lens 5 realizes focusing and anti-shake function.
Regarding the camera module, the camera module further includes an adjusting assembly 2, the adjusting assembly 2 includes an adjusting seat 201, the adjusting ring 6 is disposed on the adjusting seat 201, one end of the connecting rod 102 is hinged to the adjusting seat 201, the adjusting seat 201 is movably connected to the base 3, and the SMA actuator 1 can drive the adjusting seat 201 and the adjusting ring 6 to move relative to the base 3, so as to achieve focusing or anti-shake.
The adjusting assembly 2 further includes a spring 202, the spring 202 is fixedly connected to the adjusting base 201, the spring 202 is provided with a plurality of second elastic arms 204, one end of each second elastic arm 204 is connected to the base 3, and the second elastic arms 204 enable the spring 202 to support the adjusting base 201 and enable the adjusting base 201 to move relative to the base 3.
Regarding the spring 202, the spring 202 is fixed in conformity with the upper surface of the adjustment seat 201. The spring 202 and the second elastic arm 204 are integrally formed metal sheets, and the second elastic arm 204 enables the adjusting seat 201 to form an elastic suspension state on the base 3, so that the adjusting seat 201 can be easily driven on each SMA actuator 1. The spring 202 constitutes a suspension system for the lens assembly 2. Here, the spring 202 does not refer to a coil spring, a spiral spring or a plate spring, which are common in the mechanical field, but is a profile spring dedicated to the suspension of the adjustment assembly 2.
Of course, according to practical circumstances, in other embodiments, the number of the springs 202 may be optionally provided with a plurality of springs, for example, two springs may be provided, where one spring 202 is fixed to the upper surface of the adjusting seat 201 in an abutting manner, and the other spring 202 is fixed to the lower surface of the adjusting seat 201 in an abutting manner.
Regarding the camera module, still including lid 4, lid 4 covers the top of establishing at base 3, and forms between lid 4 and the base 3 and hold the chamber, and the first mounting hole 302 that is used for inlaying dress fixed lens 7 is seted up at the center of base 3, and the center at lid 4 top is seted up and is used for inlaying the second fixed orifices 401 of inlaying dress liquid lens 5, and fixed lens 7, regulation seat 201, adjustable ring 6, SMA actuator 1 all set up and hold the intracavity portion.
Regarding base 3, four corners of base 3 all are provided with four spliced poles 301 that extend to holding the intracavity, and the one end of second elastic arm 204 is connected to the top of spliced pole 301, and the side at spliced pole 301 is all connected to supporting part 104 among the SMA actuator 1 to four SMA actuators 1 correspond the four sides of base 3 respectively, and for the convenience of carrying out circuit connection, supporting part 104 one end is passed base 3 and extend to and hold the chamber outside, and base 3 sets up the open slot 303 that allows supporting part 104 to wear out.
The liquid lens focusing and anti-shaking device and the camera module in the technical scheme can be used in electronic equipment.
Claims (10)
1. Liquid lens is focused and anti-shake device, its characterized in that includes:
a liquid lens which can change a curvature focal length by contact extrusion;
the SMA actuator comprises an SMA wire, a connecting rod, a supporting part and a first elastic arm, wherein the SMA wire can be electrified and contracted, one end of the connecting rod is connected with the SMA wire, one end of the connecting rod is elastically connected with the supporting part, the first elastic arm is arranged between the connecting rod and the supporting part, and the first elastic arm can be elastically bent;
the adjusting ring is arranged below the liquid lens, the SMA wire can be driven by contraction of the SMA wire to drive the connecting rod to swing relative to the supporting part, and the connecting rod can drive the adjusting ring to move so as to contact and extrude the liquid lens.
2. The liquid lens focusing and anti-shake apparatus according to claim 1, wherein: the number of the support parts, the first elastic arms and the connecting rods in the SMA actuator is two and the two support parts, the first elastic arms and the connecting rods are symmetrically arranged.
3. The liquid lens focusing and anti-shake apparatus according to claim 1, wherein: the supporting portion, the first elastic arm and the connecting rod are integrally formed through conductive materials.
4. A liquid lens focusing and anti-shake apparatus according to any one of claims 1-3, wherein: the adjusting ring is arranged on the driven part, and one end of the connecting rod is hinged with the driven part.
5. A liquid lens focusing and anti-shake apparatus according to any one of claims 1-3, wherein: at least one first SMA actuator and/or at least one second SMA actuator is included, the first SMA actuator and the second SMA actuator being operable to drive the adjustment ring in opposite directions.
6. Camera module, its characterized in that: a liquid lens focusing and anti-shake apparatus comprising any one of claims 1 to 3.
7. The camera module of claim 6, wherein: still including base and fixed camera lens, liquid camera lens setting is in the base top, fixed camera lens connect on the base, and be located the liquid camera lens below, the SMA actuator is connected on the base, just the adjustable ring is in liquid camera lens with between the fixed camera lens.
8. The camera module of claim 7, wherein: still including adjusting part, adjusting part is including adjusting seat and spring, the adjustable ring sets up adjust on the seat, the one end of connecting rod with it is articulated to adjust the seat, the spring with adjust seat fixed connection, the spring is equipped with a plurality of second elastic arms, the one end of second elastic arm with the base is connected, the second elastic arm makes the spring-supported adjust the seat and make it is relative to adjust the seat the base is movable.
9. An electronic device, characterized in that: comprising a liquid lens focusing and anti-shake apparatus as claimed in any of claims 1 to 5.
10. An electronic device, characterized in that: comprising a camera module according to any one of claims 6 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922226741.2U CN210781021U (en) | 2019-12-12 | 2019-12-12 | Liquid lens focusing and anti-shaking device, camera module and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922226741.2U CN210781021U (en) | 2019-12-12 | 2019-12-12 | Liquid lens focusing and anti-shaking device, camera module and electronic equipment |
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| Publication Number | Publication Date |
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| CN210781021U true CN210781021U (en) | 2020-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922226741.2U Active CN210781021U (en) | 2019-12-12 | 2019-12-12 | Liquid lens focusing and anti-shaking device, camera module and electronic equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113228613A (en) * | 2020-08-28 | 2021-08-06 | 深圳市大疆创新科技有限公司 | Shooting module, control method thereof, shooting device, electronic equipment and readable storage medium |
-
2019
- 2019-12-12 CN CN201922226741.2U patent/CN210781021U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113228613A (en) * | 2020-08-28 | 2021-08-06 | 深圳市大疆创新科技有限公司 | Shooting module, control method thereof, shooting device, electronic equipment and readable storage medium |
| CN113228613B (en) * | 2020-08-28 | 2023-08-18 | 深圳市大疆创新科技有限公司 | Shooting module, shooting device, electronic equipment and readable storage medium |
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Effective date of registration: 20210729 Address after: 523062 Room 301, building 4, No. 7, Xinhe Shengfeng Road, Wanjiang street, Dongguan City, Guangdong Province Patentee after: Guangdong haideya Technology Co.,Ltd. Address before: 523062 3rd floor, building D, No. 12, Shengfeng Road, Xinhe community venture industrial park, Wanjiang District, Dongguan City, Guangdong Province Patentee before: DONGGUAN YADENG ELECTRONICS Co.,Ltd. |