CN111123539B - Shape memory alloy wire type optical anti-shake mechanism, camera device and electronic equipment - Google Patents
Shape memory alloy wire type optical anti-shake mechanism, camera device and electronic equipment Download PDFInfo
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- CN111123539B CN111123539B CN202010057326.3A CN202010057326A CN111123539B CN 111123539 B CN111123539 B CN 111123539B CN 202010057326 A CN202010057326 A CN 202010057326A CN 111123539 B CN111123539 B CN 111123539B
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- 229910001285 shape-memory alloy Inorganic materials 0.000 title claims abstract description 157
- 230000003287 optical effect Effects 0.000 title claims abstract description 67
- 230000007246 mechanism Effects 0.000 title claims abstract description 44
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- 230000001413 cellular effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/64—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image
- G02B27/646—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image compensating for small deviations, e.g. due to vibration or shake
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
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- Optics & Photonics (AREA)
- Adjustment Of Camera Lenses (AREA)
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Abstract
The present disclosure provides a shape memory alloy wire type optical anti-shake mechanism, comprising: a first frame; a second frame body forming a space accommodating the first frame body; and a shape memory alloy wire disposed between the first frame and the second frame, the first frame being moved in a space formed by the second frame by the shape memory alloy wire, wherein both ends of the shape memory alloy wire are connected to two adjacent side walls of the second frame by elastic members, and when the shape memory alloy wire is energized, the first frame is made to move in a horizontal direction perpendicular to an optical axis direction. The disclosure also provides a camera device and an electronic device.
Description
Technical Field
The disclosure belongs to the technical field of optical anti-shake, and particularly relates to a shape memory alloy wire type optical anti-shake mechanism, a camera device and electronic equipment.
Background
In general, as the sharpness and magnification of an image photographed by a device having a photographing function such as a camera or a cellular phone are improved, OIS (Optical image stabilization, optical anti-shake) function for correcting camera shake and vibration at the time of telephoto by the device having a photographing function such as a camera or a cellular phone requires more complicated camera shake and vibration tracking capability.
The optical anti-shake mechanism in the prior art has a complex structure, is not rapid enough in response speed and is not ideal in optical anti-shake effect.
Disclosure of Invention
In order to solve at least one of the above technical problems, the present disclosure provides a shape memory alloy wire type optical anti-shake mechanism, a camera device, and an electronic apparatus.
According to one aspect of the present disclosure, there is provided a shape memory alloy wire type optical anti-shake mechanism including: a first frame; a second frame body forming a space accommodating the first frame body; and a shape memory alloy wire disposed between the first frame and the second frame, the first frame being moved in a space formed by the second frame by the shape memory alloy wire, wherein both ends of the shape memory alloy wire are connected to two adjacent side walls of the second frame by elastic members, and when the shape memory alloy wire is energized, the first frame is made to move in a horizontal direction perpendicular to an optical axis direction.
The shape memory alloy wire type optical anti-shake mechanism according to at least one embodiment of the present disclosure, the first frame body serves as a support lens support device.
According to the shape memory alloy wire type optical anti-shake mechanism of at least one embodiment of the present disclosure, the number of the shape memory alloy wires is four, each of the shape memory alloy wires bypasses one of four corners of the first frame, and only one of the shape memory alloy wires bypasses each of the four corners of the first frame.
The shape memory alloy wire type optical anti-shake mechanism according to at least one embodiment of the present disclosure, the second frame includes a first corner, a second corner, a third corner, and a fourth corner, the first corner and the third corner are disposed along a diagonal line, and the second corner and the fourth corner are disposed along a diagonal line; a first arc-shaped convex part, a second arc-shaped convex part, a third arc-shaped convex part and a fourth arc-shaped convex part are respectively formed on four corners of the first frame body; the first arc-shaped convex part is opposite to the first corner, the second arc-shaped convex part is opposite to the second corner, the third arc-shaped convex part is opposite to the third corner, and the fourth arc-shaped convex part is opposite to the fourth corner; the four strip-shaped memory alloy wires respectively bypass the first arc-shaped convex part, the second arc-shaped convex part, the third arc-shaped convex part and the fourth arc-shaped convex part.
According to the shape memory alloy wire type optical anti-shake mechanism of at least one embodiment of the present disclosure, two fixing portions are formed on the side walls between every two corners of the second frame body, the two fixing portions are arranged at intervals, and two ends of each strip-shaped shape memory alloy wire bypassing each arc-shaped convex portion of the first frame body are connected to the fixing portions, far away from the arc-shaped convex portion, on the two side walls of the second frame body adjacent to the arc-shaped convex portion through elastic components.
According to the shape memory alloy wire type optical anti-shake mechanism of at least one embodiment of the present disclosure, the first arc-shaped convex portion and the third arc-shaped convex portion have a first size, the second arc-shaped convex portion and the fourth arc-shaped convex portion have a second size, and the first size is smaller than the second size.
According to the shape memory alloy wire type optical anti-shake mechanism of at least one embodiment of the present disclosure, two fixing portions adjacent to the first arc-shaped protrusion and two fixing portions adjacent to the third arc-shaped protrusion have a third size, two fixing portions adjacent to the second arc-shaped protrusion and two fixing portions adjacent to the fourth arc-shaped protrusion have a fourth size, and the third size is smaller than the fourth size.
According to the shape memory alloy wire type optical anti-shake mechanism of at least one embodiment of the present disclosure, every two adjacent strip-shaped shape memory alloy wires are staggered in a plane perpendicular to the optical axis direction.
According to the shape memory alloy wire type optical anti-shake mechanism of at least one embodiment of the present disclosure, the first arc-shaped convex portion, the second arc-shaped convex portion, the third arc-shaped convex portion, and the fourth arc-shaped convex portion each have the same size as the side wall of the first frame in the optical axis direction.
According to the shape memory alloy wire type optical anti-shake mechanism of at least one embodiment of the present disclosure, the fixing portion having the fourth size has a narrowed portion at one end near the side wall of the second frame body so that the fixing portion having the fourth size does not interfere with the passage of the shape memory alloy wire.
According to at least one embodiment of the present disclosure, the shape memory alloy wire type optical anti-shake mechanism, the elastic member is a spring.
According to the shape memory alloy wire type optical anti-shake mechanism of at least one embodiment of the present disclosure, each elastic member is in a preset stretched state so that the first frame is stably held in a space formed by the second frame.
A shape memory alloy wire type optical anti-shake mechanism according to at least one embodiment of the present disclosure, the second frame having one bottom wall and four side walls, forming a space accommodating the first frame; the first housing also has a bottom wall and four side walls.
The shape memory alloy wire type optical anti-shake mechanism according to at least one embodiment of the present disclosure further includes a guide sphere disposed between an upper surface of the bottom wall of the second frame and a lower surface of the bottom wall of the first frame for guiding movement of the second frame relative to the first frame.
According to still another aspect of the present disclosure, there is provided a camera device including the shape memory alloy wire type optical anti-shake mechanism of any one of the above.
According to still another aspect of the present disclosure, there is provided an electronic apparatus including the above-described camera device.
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 structural view of a shape memory alloy wire type optical anti-shake mechanism according to an embodiment of the present disclosure in an optical axis direction.
Fig. 2 is one of control principle schematic diagrams of a shape memory alloy wire type optical anti-shake mechanism according to an embodiment of the present disclosure.
Fig. 3 is a second schematic diagram of the control principle of the shape memory alloy wire type optical anti-shake mechanism according to an embodiment of the disclosure.
Description of the reference numerals
10 Shape memory alloy wire type optical anti-shake mechanism
100 Hollow part
101 First frame
102 Second frame
121 First arcuate projection
122 Second arc-shaped convex part
123 Third arc-shaped convex part
124 Fourth arcuate projection
131 First shape memory alloy wire
132 Second shape memory alloy wire
133 Third shape memory alloy wire
134 Fourth shape memory alloy wire
141A one of the first fixing portions
141B one of the second fixing portions
142A second of the first fixing portions
142B second fixing portion
143A third of the first fixing portions
143B third second fixing portion
144A fourth of the first fixing portion
144B second fixing portion
105 Elastic member/spring
151 First corner
152 Second corner
153 Third corner
154 Fourth corner
Detailed Description
The present disclosure is described in further detail below with reference to the drawings and the embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant content and not limiting of the present disclosure. It should be further noted that, for convenience of description, only a portion relevant to the present disclosure is shown in the drawings.
In addition, embodiments of the present disclosure and features of the embodiments may be combined with each other without conflict. The technical aspects of the present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Unless otherwise indicated, the exemplary implementations/embodiments shown 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. Thus, unless otherwise indicated, features of the various implementations/embodiments may be additionally combined, separated, interchanged, and/or rearranged without departing from the technical concepts of the present disclosure.
The use of cross-hatching and/or shading in the drawings is typically used to clarify the boundaries between adjacent components. As such, the presence or absence of cross-hatching or shading does not convey or represent any preference or requirement for a particular material, material property, dimension, proportion, commonality between illustrated components, and/or any other characteristic, attribute, property, etc. of a component, unless indicated. In addition, in the drawings, the size and relative sizes of elements may be exaggerated for clarity and/or descriptive purposes. While the exemplary embodiments may be variously implemented, the specific process sequences may be performed in a different order than that described. For example, two consecutively described processes may be performed substantially simultaneously or in reverse order from that described. Moreover, like reference numerals designate like parts.
When an element is referred to as being "on" or "over", "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 this reason, the term "connected" may refer to physical connections, electrical connections, and the like, with or without intermediate components.
For descriptive purposes, the present disclosure may use spatially relative terms such as "under … …," under … …, "" under … …, "" lower, "" above … …, "" upper, "" above … …, "" upper "and" side (e.g., as in "sidewall") to describe one component's relationship to another (other) component as illustrated in the figures. In addition to the orientations depicted in the drawings, the spatially relative terms are intended to encompass different orientations of the device in use, operation, and/or manufacture. For example, if the device in the figures is turned over, elements described as "under" or "beneath" other elements or features would then be oriented "over" the other elements or features. Thus, the exemplary term "below … …" may encompass both an orientation of "above" and "below". Furthermore, the device may be otherwise positioned (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Fig. 1 is a structural view of a shape memory alloy wire type optical anti-shake mechanism 10 according to an embodiment of the present disclosure in the optical axis direction.
A shape memory alloy wire type optical anti-shake mechanism 10 comprising: a first frame 101; a second frame 102, the second frame 102 forming a space accommodating the first frame 101; and a shape memory alloy wire disposed between the first frame 101 and the second frame 102, the first frame 101 being held in a space formed by the second frame 102 by the shape memory alloy wire, wherein both ends of the shape memory alloy wire are connected to two adjacent side walls of the second frame 102 by elastic members 105, and when the shape memory alloy wire is energized, the first frame 101 is made to move in a horizontal direction perpendicular to an optical axis direction.
The first housing 101 is used for supporting a lens supporting device or an optical focusing device. The lens support means or the optical focusing means are not shown in fig. 1.
Preferably, the second frame 102 has a bottom wall and four side walls, and the first frame 101 and the second frame 102 shown in fig. 1 are each generally square in shape.
Preferably, the bottom wall and four side walls of the second frame 102 form a space for accommodating the first frame 101, and the first frame 101 also has one bottom wall and four side walls.
In fig. 1, a lens supporting device or an optical focusing device may be provided in a hollow portion 100 formed on a bottom wall of a first housing 101.
Preferably, a hollow portion is also formed in the bottom wall of the second housing 102.
Preferably, the shape memory alloy wire type optical anti-shake mechanism 10 of this embodiment has four shape memory alloy wires, each of which bypasses one of the four corners of the first housing 101, and only one of which bypasses each of the four corners of the first housing 101.
When the shape memory alloy wire is energized, the shape memory alloy wire contracts, thereby driving the first frame 101 to move in a plane perpendicular to the optical axis direction.
A first shape memory alloy wire 131, a second shape memory alloy wire 132, a third shape memory alloy wire 133, and a fourth shape memory alloy wire 134 are shown in fig. 1.
As can be seen from fig. 1, the second frame 102 of the shape memory alloy wire type optical anti-shake mechanism 10 includes a first corner 151, a second corner 152, a third corner 153, and a fourth corner 154, the first corner 151 and the third corner 153 being disposed diagonally, and the second corner 152 and the fourth corner 154 being disposed diagonally.
Preferably, the first arc-shaped protrusion 121, the second arc-shaped protrusion 122, the third arc-shaped protrusion 123, and the fourth arc-shaped protrusion 124 are formed on four corners of the first frame 101, respectively.
Wherein, the first arc-shaped protrusion 121 is opposite to the first corner 151, the second arc-shaped protrusion 122 is opposite to the second corner 152, the third arc-shaped protrusion 123 is opposite to the third corner 153, and the fourth arc-shaped protrusion 124 is opposite to the fourth corner 154.
The four bar-shaped shape memory alloy wires bypass the first arc-shaped protrusion 121, the second arc-shaped protrusion 122, the third arc-shaped protrusion 123, and the fourth arc-shaped protrusion 124, respectively.
Specifically, the first shape memory alloy wire 131 bypasses the first arc-shaped protrusion 121 of the first frame body 101, the second shape memory alloy wire 132 bypasses the second arc-shaped protrusion 122 of the first frame body 101, the third shape memory alloy wire 133 bypasses the third arc-shaped protrusion 123 of the first frame body 101, and the fourth shape memory alloy wire 134 bypasses the fourth arc-shaped protrusion 124 of the first frame body 101.
By controlling energization of each of the strip-shaped memory alloy wires, movement of the first frame 101 in different directions in a plane perpendicular to the optical axis direction is achieved.
Since both ends of each of the bar-shaped memory alloy wires 131, 132, 133, 134 are connected to both adjacent side walls of the second housing 102 through the elastic member 105, when the shape memory alloy wires are not energized any more after being energized, the first housing 101 can be more quickly restored due to the elastic force of the elastic member 105.
Preferably, the elastic member 105 of the shape memory alloy wire type optical anti-shake mechanism 10 is a spring.
More preferably, each elastic member 105 is in a preset stretched state, so that the first frame 101 is stably held in the space formed by the second frame 102. Preferably, each elastic member 105 has the same preset stretch state.
As shown in fig. 1, two fixing portions are formed on the side walls between every two corners of the second frame 102 of the shape memory alloy wire type optical anti-shake mechanism 10, the two fixing portions are arranged at intervals, and two ends of each strip-shaped shape memory alloy wire 131 bypassing each arc-shaped convex portion of the first frame 101 are connected to the fixing portions far away from the arc-shaped convex portion on the two side walls of the second frame 102 adjacent to the arc-shaped convex portion through elastic members 105.
More specifically, the first fixing portion and the second fixing portion are formed on the inner side surface of each side wall of the second frame 102, and the first fixing portion and the second fixing portion on each side wall are disposed at a fixed interval, and preferably, the interval distances between the first fixing portion and the second fixing portion formed on the four side walls are substantially the same.
The first shape memory alloy wire 131 bypasses the first arc-shaped protrusion 121, both ends of the first shape memory alloy wire 131 are connected to two second fixing portions 141B and 144B, respectively, by elastic members, the second fixing portion 141B is distant from the first arc-shaped protrusion 121 with respect to the first fixing portion 141A, and the second fixing portion 144B is distant from the first arc-shaped protrusion 121 with respect to the first fixing portion 144A.
The second shape memory alloy wire 132 bypasses the second arc-shaped protrusion 122, and both ends of the second shape memory alloy wire 132 are connected to two first fixing portions 141A and 142A, respectively, by elastic members, the first fixing portion 141A being distant from the second arc-shaped protrusion 122 with respect to the second fixing portion 141B, and the first fixing portion 142A being distant from the second arc-shaped protrusion 122 with respect to the second fixing portion 142B.
The third shape memory alloy wire 133 bypasses the third arc-shaped protrusion 123, both ends of the third shape memory alloy wire 133 are connected to two second fixing portions 143B and 142B, respectively, by elastic members, the second fixing portion 142B is distant from the third arc-shaped protrusion 123 with respect to the first fixing portion 142A, and the second fixing portion 143B is distant from the third arc-shaped protrusion 123 with respect to the first fixing portion 143A.
The fourth shape memory alloy wire 134 bypasses the fourth arc-shaped protrusion 124, and both ends of the fourth shape memory alloy wire 134 are connected to two first fixing portions 143A and 144A, respectively, by elastic members, the first fixing portion 143A being distant from the fourth arc-shaped protrusion 124 with respect to the second fixing portion 143B, and the first fixing portion 144A being distant from the fourth arc-shaped protrusion 124 with respect to the second fixing portion 144B.
Preferably, as shown in fig. 1, the first and third arc-shaped protrusions 121 and 123 have a first size, and the second and fourth arc-shaped protrusions 122 and 124 have a second size, which is smaller than the first size.
Preferably, two fixing portions adjacent to the first arc-shaped protrusion 121 and two fixing portions adjacent to the third arc-shaped protrusion 123 have a third size, two fixing portions adjacent to the second arc-shaped protrusion 122 and two fixing portions adjacent to the fourth arc-shaped protrusion 124 have a fourth size, and the third size is smaller than the fourth size.
As shown in fig. 1, each two adjacent strip-shaped memory alloy wires are arranged in a staggered manner in a plane perpendicular to the optical axis direction.
In fig. 1, the first arc-shaped convex portion 121, the second arc-shaped convex portion 122, the third arc-shaped convex portion 123, and the fourth arc-shaped convex portion 124 each have the same size as the side wall of the first frame 101 in the optical axis direction.
According to a preferred embodiment of the present disclosure, the fixing portion having the fourth size has a narrowed portion at one end near the side wall of the second frame 102 such that the fixing portion having the fourth size does not interfere with the passage of the shape memory alloy wire 131.
Specifically, the second fixing portions 141B, 142B, 143B, 144B each have a narrowed portion at one end thereof adjacent to the side wall of the second frame 102.
As an alternative embodiment, the second fixing portions 141B, 142B, 143B, 144B are provided with perforations at one end near the side wall of the second frame 102 for the shape memory alloy wire to pass through.
According to a preferred embodiment of the present disclosure, the shape memory alloy wire type optical anti-shake mechanism 10 further includes a guide sphere (not shown in fig. 1) provided between an upper surface of the bottom wall of the second frame 102 and a lower surface of the bottom wall of the first frame 101 for guiding movement of the second frame 102 relative to the first frame 101.
Fig. 2 is one of control principle schematic diagrams of a shape memory alloy wire type optical anti-shake mechanism according to an embodiment of the present disclosure.
As shown in fig. 2, when the second shape memory alloy wire 132 is energized and the fourth shape memory alloy wire 134 is not energized, neither the first shape memory alloy wire 131 nor the third shape memory alloy wire 133 is energized, the second shape memory alloy wire 132 contracts, driving the first frame 101 to move downward and leftward, i.e., in the arrow direction in fig. 2.
When the fourth shape memory alloy wire 134 is energized and the second shape memory alloy wire 132 is not energized, neither the first shape memory alloy wire 131 nor the third shape memory alloy wire 133 is energized, the fourth shape memory alloy wire 134 contracts, driving the first frame 101 to move upward and rightward. Not shown in fig. 2.
When the first shape memory alloy wire 131 is energized and the third shape memory alloy wire 133 is not energized, neither the second shape memory alloy wire 132 nor the fourth shape memory alloy wire 134 is energized, the first shape memory alloy wire 131 contracts, driving the first frame 101 to move rightward and downward. Not shown in fig. 2.
When the third shape memory alloy wire 133 is energized and the first shape memory alloy wire 131 is not energized, neither the second shape memory alloy wire 132 nor the fourth shape memory alloy wire 134 is energized, the third shape memory alloy wire 133 contracts, driving the first frame 101 to move upward and leftward. Not shown in fig. 2.
Fig. 3 is a second schematic diagram of the control principle of the shape memory alloy wire type optical anti-shake mechanism according to an embodiment of the disclosure.
As shown in fig. 3, when the second shape memory alloy wire 132 is energized, the third shape memory alloy wire 133 is energized, neither the first shape memory alloy wire 131 nor the fourth shape memory alloy wire 134 is energized, the second shape memory alloy wire 132 contracts, the third shape memory alloy wire 133 contracts, and the first frame 101 moves leftward, i.e., in the arrow direction in fig. 3, under the drive of the resultant force of the driving force of the second shape memory alloy wire 132 and the driving force of the third shape memory alloy wire 133.
When the third shape memory alloy wire 133 is energized, the fourth shape memory alloy wire 134 is energized, neither the second shape memory alloy wire 132 nor the first shape memory alloy wire 131 is energized, the third shape memory alloy wire 133 contracts, the fourth shape memory alloy wire 134 contracts, and the first frame 101 moves upward under the drive of the resultant force of the driving force of the third shape memory alloy wire 133 and the driving force of the fourth shape memory alloy wire 134, which is not shown in fig. 3.
When the fourth shape memory alloy wire 134 is energized, the first shape memory alloy wire 131 is energized, neither the third shape memory alloy wire 133 nor the second shape memory alloy wire 132 is energized, the fourth shape memory alloy wire 134 contracts, the first shape memory alloy wire 131 contracts, and the first frame 101 moves rightward under the drive of the resultant force of the driving force of the fourth shape memory alloy wire 134 and the driving force of the first shape memory alloy wire 131, which is not shown in fig. 3.
When the first shape memory alloy wire 131 is energized, the second shape memory alloy wire 132 is energized, neither the fourth shape memory alloy wire 134 nor the third shape memory alloy wire 133 is energized, the first shape memory alloy wire 131 contracts, the second shape memory alloy wire 132 contracts, and the first frame 101 moves downward under the drive of the resultant force of the driving force of the first shape memory alloy wire 131 and the driving force of the second shape memory alloy wire 132, which is not shown in fig. 3.
It can be seen that by controlling energization of the four bar-shaped shape memory alloy wires, movement of the first frame 101 in various directions in a plane perpendicular to the optical axis direction is achieved. The optical axis direction is the direction perpendicular to the paper surface in fig. 1 to 3.
In the present disclosure, the lens (first frame) can be made to move rapidly in the up-down-left-right direction by the resultant force (SMA wire is disposed opposite to the lens as a center, and rapidly moved by the action of the resultant force), and the lens can be made to return to the initial state rapidly by the elastic force of the spring by the arrangement of the spring. Meanwhile, through the arrangement of the present disclosure, the lens can not receive a rotation force, so that the lens can act accurately.
The present disclosure also provides a camera apparatus including the shape memory alloy wire type optical anti-shake mechanism 10 described above.
The disclosure also provides an electronic device comprising the camera device.
In the description of the present specification, reference to the terms "one embodiment/manner," "some embodiments/manner," "example," "a particular example," "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/manner or example is included in at least one embodiment/manner or example of the application. In this specification, the schematic representations of the above terms are not necessarily for the same embodiment/manner 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/modes or examples described in this specification and the features of the various embodiments/modes or examples can be combined and combined by persons skilled in the art without contradiction.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
It will be appreciated by those skilled in the art that the above-described 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 will be apparent to persons skilled in the art from the foregoing disclosure, and such variations or modifications are intended to be within the scope of the present disclosure.
Claims (10)
1. A shape memory alloy wire type optical anti-shake mechanism, comprising:
A first frame serving as a lens supporting means;
A second frame body forming a space accommodating the first frame body; and
A shape memory alloy wire disposed between the first frame and the second frame, the first frame being moved in the space formed by the second frame by the shape memory alloy wire,
Wherein both ends of the shape memory alloy wire are connected to two adjacent side walls of the second frame body through elastic parts, when the shape memory alloy wire is electrified, the first frame body moves in a horizontal direction perpendicular to the optical axis direction,
The number of the shape memory alloy wires is four, each bar-shaped shape memory alloy wire bypasses one corner of the four corners of the first frame body, each corner of the four corners of the first frame body is provided with and only one bar-shaped shape memory alloy wire bypasses,
The second frame body comprises a first corner, a second corner, a third corner and a fourth corner, wherein the first corner and the third corner are arranged along a diagonal line, and the second corner and the fourth corner are arranged along a diagonal line; a first arc-shaped convex part, a second arc-shaped convex part, a third arc-shaped convex part and a fourth arc-shaped convex part are respectively formed on four corners of the first frame body; the first arc-shaped convex part is opposite to the first corner, the second arc-shaped convex part is opposite to the second corner, the third arc-shaped convex part is opposite to the third corner, and the fourth arc-shaped convex part is opposite to the fourth corner; the four shape memory alloy wires respectively bypass the first arc convex part, the second arc convex part, the third arc convex part and the fourth arc convex part, two fixing parts are formed on the side wall between every two corner parts of the second frame body, the two fixing parts are arranged at intervals, the two ends of each strip-shaped shape memory alloy wire bypassing each arc convex part of the first frame body are connected to the fixing parts far away from the arc convex part on the two side walls of the second frame body adjacent to the arc convex part through elastic parts, the first arc convex part and the third arc convex part have a first size, the second arc convex part and the fourth arc convex part have a second size, the first size is smaller than the second size,
Wherein each two adjacent strip-shaped memory alloy wires are staggered in a plane perpendicular to the optical axis direction.
2. The shape memory alloy wire type optical anti-shake mechanism according to claim 1, wherein two fixing portions adjacent to the first arc-shaped convex portion and two fixing portions adjacent to the third arc-shaped convex portion have a third size, and two fixing portions adjacent to the second arc-shaped convex portion and two fixing portions adjacent to the fourth arc-shaped convex portion have a fourth size, and the third size is smaller than the fourth size.
3. The shape memory alloy wire type optical anti-shake mechanism according to claim 2, wherein the first arc-shaped convex portion, the second arc-shaped convex portion, the third arc-shaped convex portion, and the fourth arc-shaped convex portion each have the same size as a side wall of the first frame body in the optical axis direction.
4. The shape memory alloy wire type optical anti-shake mechanism according to claim 2, wherein the fixing portion having a fourth size has a narrowed portion at an end near a side wall of the second frame body so that the fixing portion having the fourth size does not interfere with passage of the shape memory alloy wire.
5. The shape memory alloy wire type optical anti-shake mechanism according to claim 1, characterized in that the elastic member is a spring.
6. The shape memory alloy wire type optical anti-shake mechanism according to claim 1 or 5, characterized in that each of the elastic members is in a preset stretched state so that the first frame is stably held in the space formed by the second frame.
7. The shape memory alloy wire type optical anti-shake mechanism according to claim 1, wherein the second frame body has one bottom wall and four side walls, forming a space accommodating the first frame body; the first housing also has a bottom wall and four side walls.
8. The shape memory alloy wire type optical anti-shake mechanism according to claim 7, further comprising a guide sphere provided between an upper surface of the bottom wall of the second frame body and a lower surface of the bottom wall of the first frame body for guiding movement of the second frame body with respect to the first frame body.
9. A camera device comprising the shape memory alloy wire-type optical anti-shake mechanism according to any one of claims 1 to 8.
10. An electronic device comprising the camera arrangement of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010057326.3A CN111123539B (en) | 2020-01-19 | 2020-01-19 | Shape memory alloy wire type optical anti-shake mechanism, camera device and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN114245001B (en) * | 2020-09-09 | 2023-12-29 | 北京小米移动软件有限公司 | Camera module and terminal equipment |
| CN212135046U (en) * | 2020-11-11 | 2020-12-11 | 常州市瑞泰光电有限公司 | Lens driving device |
| GB2601306B (en) * | 2020-11-23 | 2023-01-18 | Cambridge Mechatronics Ltd | SMA actuator assembly |
| CN113329162B (en) * | 2021-07-06 | 2023-05-09 | 广东海德亚科技有限公司 | Device for preventing camera from shaking and focusing |
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| CN104204935A (en) * | 2012-02-16 | 2014-12-10 | 剑桥机电有限公司 | Shape memory alloy actuation apparatus |
| CN109901346A (en) * | 2017-12-08 | 2019-06-18 | 宁波舜宇光电信息有限公司 | Optical module, camera module and the smart machine with camera module |
| CN110456473A (en) * | 2019-08-09 | 2019-11-15 | 重庆睿恩光电子有限责任公司 | The installation method and camera apparatus of lens driver, shape memory alloy wire |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104204935A (en) * | 2012-02-16 | 2014-12-10 | 剑桥机电有限公司 | Shape memory alloy actuation apparatus |
| CN109901346A (en) * | 2017-12-08 | 2019-06-18 | 宁波舜宇光电信息有限公司 | Optical module, camera module and the smart machine with camera module |
| CN110456473A (en) * | 2019-08-09 | 2019-11-15 | 重庆睿恩光电子有限责任公司 | The installation method and camera apparatus of lens driver, shape memory alloy wire |
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