CN212518838U - Two-dimensional piezoelectric micro-motion mechanism and optical image stabilization compensation lens - Google Patents
Two-dimensional piezoelectric micro-motion mechanism and optical image stabilization compensation lens Download PDFInfo
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- CN212518838U CN212518838U CN202021499752.4U CN202021499752U CN212518838U CN 212518838 U CN212518838 U CN 212518838U CN 202021499752 U CN202021499752 U CN 202021499752U CN 212518838 U CN212518838 U CN 212518838U
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Abstract
The utility model relates to a two-dimentional piezoelectricity fine motion mechanism, optics are surely like compensation camera lens, wherein, the inside casing setting constitutes one "return" type structure in the frame, and central sleeve sets up in the inside casing. A vertical first flexible frame is integrally arranged at the left side position between the outer frame and the inner frame, and the first laminated piezoelectric ceramic group is arranged in the first flexible frame. And a horizontal second flexible frame second laminated piezoelectric ceramic group is arranged at the bottom between the inner frame and the central sleeve and is arranged in the second flexible frame. The mounting sleeve is mounted in the mounting hole of the central sleeve, the compensation lens is in transition fit with the mounting sleeve, and two lenses are mounted at two ends of the compensation lens respectively. The utility model discloses well adoption stromatolite piezoceramics carries out the motion and adjusts, can realize exporting great displacement under the low-power of low pressure low frequency to, can stablize work under the off-resonance state, it is less to receive the environmental impact, and stability is high, and the suitability is strong. Furthermore, the utility model discloses a two degrees of freedom translation compensation optical axis's steady image scheme is adjusted portably, and the linearity is good.
Description
Technical Field
The utility model belongs to the technical field of optical lens, a two-dimentional piezoelectricity fine motion mechanism, optics are surely like compensation camera lens are related to.
Background
The existing image stabilization mode mainly comprises mechanical image stabilization, electronic image stabilization and optical image stabilization, wherein the optical image stabilization is different from the mechanical image stabilization and the electronic image stabilization, a group of movable lenses or photosensitive elements in an optical instrument are adjusted by a stabilizing mechanism, the change of an optical axis is changed in real time, the light deflection of the optical instrument under the condition of external disturbance is compensated, the influence of external shaking on imaging is eliminated, the purpose of stable imaging is achieved, and the observed target imaging is clearer.
The image stabilizing element in the optical image stabilizing system mostly adopts an inertial type (a gyroscope is usually adopted), an electromagnetic type (the movement of a compensation lens is controlled by an electromagnetic motor) or a mechanical stabilizing mechanism (the movement of the compensation lens is directly driven by a mechanical structure), the application of realizing the optical image stabilization by adopting a piezoelectric mode is less, and the operation of piezoelectric ceramics in a resonance state is mostly adopted, namely, the movement adjustment is realized by single piezoelectric ceramics, the displacement is less when the single piezoelectric ceramics is driven, the image stabilizing element is often required to be driven in a resonance mode of specific frequency, the resonance mode is not in a stable state, and when the imaging equipment is applied to a high-temperature and large-overload environment, the resonance frequency is easy to shift, so that the performance of the image stabilizing equipment is rapidly reduced.
Disclosure of Invention
Problem to prior art existence, the utility model provides a stroke is big, and stability is high, and the two-dimentional piezoelectricity fine motion mechanism that the suitability is strong, simultaneously, the utility model discloses still provide an optics steady image compensating lens who uses this fine motion mechanism.
The utility model discloses the technical scheme who adopts does:
a two-dimensional piezoelectric micromotion mechanism comprises an outer frame, an inner frame, a central sleeve, a first flexible frame, a second flexible frame, a first laminated piezoelectric ceramic group and a second laminated piezoelectric ceramic group, wherein the outer frame and the inner frame are rectangular, and the inner frame is arranged in the outer frame to form a 'return' structure; the central sleeve is rectangular and is arranged in the inner frame and is coplanar with the inner frame;
the first flexible frame is vertically arranged at the middle position of the left side of a first cavity formed by the outer frame and the inner frame, and meanwhile, the middle positions of the left side and the right side of the first flexible frame are integrally connected with the outer frame and the inner frame through two first connecting lugs; the upper end and the lower end of the first flexible frame are respectively provided with a first positioning lug, the first positioning lug at the upper end is provided with a through first screw hole, the upper end of the first laminated piezoelectric ceramic group is provided with a first end cover, one end of the first laminated piezoelectric ceramic group is abutted against the first positioning lug, and the other end of the first laminated piezoelectric ceramic group is arranged in the first flexible frame in a mode that a pre-tightening screw abuts against the first end cover; the right side of the inner frame is integrally connected with the outer frame through a third type connecting piece and a fourth type connecting piece;
the second flexible frame is horizontally arranged in the middle of the lower part of a second cavity formed by the inner frame and the central sleeve, and meanwhile, the middle positions of the upper side and the lower side of the second flexible frame are integrally connected with the inner frame and the central sleeve through two second connecting lugs; the left end and the right end of the second flexible frame are both provided with second positioning lugs, wherein the second positioning lug at the left end is provided with a through second screw hole, the left end of the second laminated piezoelectric ceramic group is provided with the second end cover, one end of the second laminated piezoelectric ceramic group is abutted against the second positioning lug, and the other end of the second laminated piezoelectric ceramic group is arranged in the second flexible frame in a manner that a pre-tightening screw abuts against the second end cover; the upper side of the central sleeve is connected with the inner frame through a first type connecting piece and a second type connecting piece.
Furthermore, the outer side of the first flexible frame corresponds to the position of any first positioning lug, and the left side and the right side of the first flexible frame are respectively provided with a first slot for increasing flexibility; the inner side of the first flexible frame is provided with a second slot which is used for increasing the flexibility in an up-down symmetrical mode at a position corresponding to any one first connecting bump; the outer side of the second flexible frame corresponds to the position of any second positioning lug, and a third slot for increasing the flexibility is respectively formed at the upper part and the lower part of the second flexible frame; and the inner side of the second flexible frame is provided with a fourth slot which is used for increasing the flexibility in a bilateral symmetry mode and corresponds to the position of any one second connecting lug.
Furthermore, the first, second, third and fourth slots are all semicircular.
An optical image stabilization compensation lens comprises a lens and the two-dimensional piezoelectric micromotion mechanism; the lens comprises an installation sleeve, a compensation lens, a first positioning lens frame, a first lens, a second positioning lens frame and a second lens, the two-dimensional piezoelectric micro-motion mechanism is vertically arranged, the first end cover faces upwards, the second end cover faces towards the front side, an installation hole matched with the installation sleeve is formed in the center of the central sleeve, and the installation sleeve is fixedly inserted into the central sleeve from right to left; the compensation lens is fixedly arranged in the mounting sleeve, the first positioning lens frame is in threaded connection with the left end of the compensation lens, and the first lens is arranged on the first positioning lens frame; the second positioning mirror frame is in threaded connection with the right end of the compensation lens, and the second lens is installed on the second positioning mirror frame.
Furthermore, a plurality of third screw holes are uniformly formed in the outer side of the mounting sleeve along the circumferential direction, fourth screw holes which are equal in number to the third screw holes and are matched with the third screw holes in a one-to-one correspondence mode are formed in the central sleeve, and the mounting sleeve and the central sleeve are fixed through screws.
Further, the number of the third screw holes is four.
Further, the compensation lens is in transition fit with the mounting sleeve.
The beneficial effects of the utility model reside in that:
the utility model discloses in adopt stromatolite piezoceramics to carry out the motion regulation, on the one hand, just can export great displacement under low pressure low frequency low power, greatly reduced to actuating system's requirement (when adopting monolithic piezoceramics to realize the function, in order to reach the steady image and adjust the requirement, need provide big voltage and high-power satisfy great stroke requirement). On the other hand, the device can work stably in a non-resonance state, is less influenced by the environment, and has high stability, wide application range and strong applicability. Furthermore, the utility model discloses well adoption two degrees of freedom translation compensation optical axis's steady image scheme, it is simple and convenient to adjust, and transfer function relation linearity is better (the linearity is good).
The utility model discloses an optics is surely like compensation camera lens still has compact structure, convenient assembling's advantage.
Drawings
FIG. 1 is a schematic structural diagram of a two-dimensional piezoelectric micromotion mechanism;
FIG. 2 is an exploded view of an optical image stabilization compensation lens;
reference numerals: a-a two-dimensional piezoelectric micromotion mechanism, a 1-an outer frame, a 2-an inner frame, a 3-a central sleeve, a 4-a first flexible frame, a 5-a first laminated piezoelectric ceramic group, a 6-a first end cover, a 7-a second flexible frame, a 8-a second laminated piezoelectric ceramic group, a 9-a second end cover, a 10-a first L-shaped connecting piece, a 11-a second L-shaped connecting piece, a 12-a third L-shaped connecting piece, and a 13-a fourth L-shaped connecting piece;
b-lens, b 1-mounting sleeve, b 2-compensating lens, b 3-first positioning lens frame, b 4-first lens, b 5-second positioning lens frame, b 6-second lens.
Detailed Description
The two-dimensional piezoelectric micro-motion mechanism and the optical image stabilization compensation lens of the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, a two-dimensional piezoelectric micromotion mechanism a includes an outer frame a1, an inner frame a2, a central sleeve a3, a first flexible frame a4, a second flexible frame a7, a first laminated piezoelectric ceramic group a5 and a second laminated piezoelectric ceramic group a8, wherein the outer frame a1 and the inner frame a2 are rectangular, and the inner frame a2 is arranged in the outer frame a1 to form a "return" type structure. The central sleeve a3 is rectangular and is disposed within inner frame a2 and is coplanar with inner frame a 2.
The first flexible frame a4 is vertically arranged at the middle position of the left side of the first cavity formed by the outer frame a1 and the inner frame a2, and meanwhile, the middle positions of the left side and the right side of the first flexible frame a4 are integrally connected with the outer frame a1 and the inner frame a2 through two first connecting bumps. The upper end and the lower end of the first flexible frame a4 are respectively provided with a first positioning lug, wherein the first positioning lug at the upper end is provided with a first through screw hole, the upper end of the first laminated piezoelectric ceramic group a5 is provided with a first end cover a6, the first laminated piezoelectric ceramic group a5 is supported against the first positioning lug by one end, and the first end is mounted in the first flexible frame a4 in a mode that the first end cover a6 is supported by a pretightening screw. The right side of the inner frame a2 is integrally connected with the outer frame a1 by a third L-shaped connector a12 and a fourth L-shaped connector a 13.
The second flexible frame a7 is horizontally arranged at the middle position of the lower part of the second cavity formed by the inner frame a2 and the central sleeve a3, and meanwhile, the middle position of the upper side and the lower side of the second flexible frame a7 is integrally connected with the inner frame a2 and the central sleeve a3 through two second connecting lugs. The left end and the right end of the second flexible frame a7 are both provided with a second positioning bump, wherein the second positioning bump at the left end is provided with a through second screw hole, the left end of the second laminated piezoelectric ceramic group a8 is provided with a second end cap a9, the second laminated piezoelectric ceramic group a8 is supported against the second positioning bump at one end, and the second end cap a9 is supported against the second end cap at one end by a pre-tightening screw and is arranged in the second flexible frame a 7. The center sleeve a3 is integrally connected to the inner frame a2 at the upper side thereof by a first L-shaped connector a10 and a second L-shaped connector a 11.
In addition, the outer side of the first flexible frame a4 corresponds to the position of any first positioning lug, and the left and right sides are respectively provided with a first slit for increasing the flexibility. The inner side of the first flexible frame a4 is provided with a second slit which is used for increasing the flexibility and is arranged symmetrically up and down at a position corresponding to any one first connecting bump. The outer side of the second flexible frame a7 corresponds to the position of any second positioning lug, and a third slit for increasing the flexibility is respectively arranged at the upper and lower parts. The inner side of the second flexible frame a7 is provided with a fourth slit which is used for increasing the flexibility and is arranged at the position corresponding to any second connecting bump in a bilateral symmetry way. The first, second, third and fourth slots are all semicircular.
As shown in fig. 2, an optical image stabilization compensation lens includes a lens b and the two-dimensional piezoelectric micromotion mechanism a. Lens b includes installation sleeve b1, compensation lens b2, first location picture frame b3, first lens b4, second location picture frame b5 and second lens b6, the vertical setting of two-dimensional piezoelectricity fine motion mechanism, first end cover a6 is up, second end cover a9 is towards the front side, central sleeve a3 center is seted up with installation sleeve b1 assorted mounting hole, installation sleeve b1 is pegged graft from right side left side and is fixed in central sleeve a 3. The compensation lens b2 is fixedly mounted in the mounting sleeve b1 and is in transition fit with the mounting sleeve b 1. The first positioning frame b3 is screwed on the left end of the compensation lens b2, and the first lens b4 is mounted on the first positioning frame b 3. The second positioning lens frame b5 is screwed on the right end of the compensation lens b2, and the second lens b6 is installed on the second positioning lens frame b5 (the two ends of the compensation lens b2 are provided with external threads matched with the positioning lens frame).
Specifically, a plurality of third screw holes are uniformly formed in the outer side of the mounting sleeve b1 along the circumferential direction, fourth screw holes which are equal in number and matched with the third screw holes in a one-to-one correspondence are formed in the central sleeve a3, and the mounting sleeve b1 and the central sleeve a3 are fixed through screws. In this embodiment, the number of the third screw holes is four.
The utility model discloses an optical image stabilization compensation lens's theory of operation does:
the first laminated piezoelectric ceramic group a5 extends under the action of a signal from a low level to a high level, drives the first flexible frame a4 to deform, extends in the vertical direction, shortens in the horizontal direction, drives the outer frame a1 to generate horizontal displacement towards the first flexible frame a4, and the third L-shaped connecting piece a12 and the fourth L-shaped connecting piece a13 on the other side bend inwards. At this time, the middle lens b is horizontally displaced toward the first flexible frame a 4.
The first laminated piezoelectric ceramic group a5 restores to original length under the action of a signal from high level to low level, and drives the first flexible frame a4 to restore to original shape, meanwhile, the first flexible frame a4 drives the outer frame a1 to generate horizontal displacement in the direction away from the first flexible frame a4, the third L-shaped connecting piece a12 and the fourth L-shaped connecting piece a13 on the other side restore to original shape, and then the middle lens b generates horizontal displacement away from the first flexible frame a 4.
The second laminated piezoelectric ceramic group a8 extends under the action of a signal from a low level to a high level, drives the second flexible frame a7 to deform, extends in the horizontal direction, shortens in the vertical direction, drives the outer frame a1 to generate vertical displacement towards the direction of the second flexible frame a7, and the first L-shaped connecting piece a10 and the second L-shaped connecting piece a11 on the other side bend inwards, so that the middle lens b generates vertical displacement towards the second flexible frame a 22.
The second laminated piezoelectric ceramic group a8 restores to original length under the action of a signal from high level to low level, and drives the second flexible frame a7 to restore to original shape, meanwhile, the second flexible frame a7 drives the outer frame a1 to generate vertical displacement in the direction away from the second flexible frame a7, the first L-shaped connecting piece a10 and the second L-shaped connecting piece a11 on the other side restore to original shape, and then the middle lens b generates vertical displacement away from the second flexible frame a 7.
By applying corresponding electrical excitation signals to the first stacked piezoelectric ceramic group a5 and the second stacked piezoelectric ceramic group a8 (how to obtain feedback compensation signals, which belongs to the prior art in the field and is not described in detail in this application), compensation of disturbance motion of the optical system can be realized, and optical image stabilization imaging can be realized.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited to the embodiments described above, but rather is described in the embodiments and the description only to illustrate the principles of the invention and that various changes and modifications may be made without departing from the spirit and scope of the invention, the scope of which is defined by the appended claims, the description and the equivalents thereof.
Claims (7)
1. A two-dimensional piezoelectric micromotion mechanism is characterized by comprising an outer frame (a1), an inner frame (a2), a central sleeve (a3), a first flexible frame (a4), a second flexible frame (a7), a first laminated piezoelectric ceramic group (a5) and a second laminated piezoelectric ceramic group (a8), wherein the outer frame (a1) and the inner frame (a2) are rectangular, and the inner frame (a2) is arranged in the outer frame (a1) to form a 'return' type structure; the central sleeve (a3) is rectangular and is arranged in the inner frame (a2) and is coplanar with the inner frame (a 2);
the first flexible frame (a4) is vertically arranged at the middle position of the left side of a first cavity formed by the outer frame (a1) and the inner frame (a2), and meanwhile, the middle positions of the left side and the right side of the first flexible frame (a4) are integrally connected with the outer frame (a1) and the inner frame (a2) through two first connecting lugs; the upper end and the lower end of the first flexible frame (a4) are respectively provided with a first positioning lug, wherein the first positioning lug at the upper end is provided with a first through screw hole, the upper end of the first laminated piezoelectric ceramic group (a5) is provided with a first end cover (a6), one end of the first laminated piezoelectric ceramic group (a5) is abutted against the first positioning lug, and the other end of the first laminated piezoelectric ceramic group (a5) is arranged in the first flexible frame (a4) in a mode that a pretightening screw is abutted against the first end cover (a 6); the right side of the inner frame (a2) is integrally connected with the outer frame (a1) through a third L-shaped connecting piece (a12) and a fourth L-shaped connecting piece (a 13);
the second flexible frame (a7) is horizontally arranged at the middle position of the lower part of a second cavity body formed by the inner frame (a2) and the central sleeve (a3), and meanwhile, the middle position of the upper side and the lower side of the second flexible frame (a7) is integrally connected with the inner frame (a2) and the central sleeve (a3) through two second connecting lugs; the left end and the right end of the second flexible frame (a7) are respectively provided with a second positioning lug, wherein the second positioning lug at the left end is provided with a through second screw hole, the left end of the second laminated piezoelectric ceramic group (a8) is provided with a second end cover (a9), one end of the second laminated piezoelectric ceramic group (a8) is abutted against the second positioning lug, and the other end of the second laminated piezoelectric ceramic group (a8) is arranged in the second flexible frame (a7) in a mode that a pre-tightening screw abuts against the second end cover (a 9); the upper side of the central sleeve (a3) is integrally connected with the inner frame (a2) through a first L-shaped connecting piece (a10) and a second L-shaped connecting piece (a 11).
2. The two-dimensional piezoelectric micromotion mechanism according to claim 1, wherein the outer side of the first flexible frame (a4) is provided with a first slit for increasing flexibility at the position corresponding to any one of the first positioning bumps, and the left side and the right side of the first flexible frame are respectively provided with a first slit for increasing flexibility; the inner side of the first flexible frame (a4) corresponds to the position of any first connecting bump, and two second slots for increasing flexibility are symmetrically formed in the upper and lower parts; the outer side of the second flexible frame (a7) corresponds to the position of any second positioning lug, and the upper part and the lower part of the second flexible frame are respectively provided with a third slit for increasing the flexibility; the inner side of the second flexible frame (a7) is provided with a fourth slit which is used for increasing the flexibility in a bilateral symmetry mode and corresponds to the position of any one second connecting lug.
3. The two-dimensional piezoelectric micromotion mechanism according to claim 2, wherein the first, second, third and fourth slits are semicircular.
4. An optical image stabilization compensation lens, characterized by comprising a lens (b) and the two-dimensional piezoelectric micromotion mechanism of any one of claims 1 to 3; the lens (b) comprises a mounting sleeve (b1), a compensation lens (b2), a first positioning lens frame (b3), a first lens (b4), a second positioning lens frame (b5) and a second lens (b6), the two-dimensional piezoelectric micro-motion mechanism is vertically arranged, the first end cover (a6) faces upwards, the second end cover (a9) faces towards the front side, a mounting hole matched with the mounting sleeve (b1) is formed in the center of the central sleeve (a3), and the mounting sleeve (b1) is inserted and fixed in the central sleeve (a3) from right to left; the compensation lens (b2) is fixedly arranged in the mounting sleeve (b1), the first positioning lens frame (b3) is in threaded connection with the left end of the compensation lens (b2), and the first lens (b4) is arranged on the first positioning lens frame (b 3); the second positioning lens frame (b5) is in threaded connection with the right end of the compensation lens (b2), and the second lens (b6) is installed on the second positioning lens frame (b 5).
5. The optical image stabilization compensation lens of claim 4, wherein a plurality of third screw holes are uniformly formed in the outer side of the mounting sleeve (b1) along the circumferential direction, fourth screw holes which are equal in number and matched with the third screw holes in a one-to-one correspondence are formed in the central sleeve (a3), and the mounting sleeve (b1) and the central sleeve (a3) are fixed through screws.
6. The optical image stabilization compensation lens according to claim 5, wherein the number of the third screw holes is four.
7. An optical image stabilization compensation lens according to claim 4, characterized in that the compensation lens (b2) is transition fitted with the mounting sleeve (b 1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021499752.4U CN212518838U (en) | 2020-07-27 | 2020-07-27 | Two-dimensional piezoelectric micro-motion mechanism and optical image stabilization compensation lens |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021499752.4U CN212518838U (en) | 2020-07-27 | 2020-07-27 | Two-dimensional piezoelectric micro-motion mechanism and optical image stabilization compensation lens |
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| CN212518838U true CN212518838U (en) | 2021-02-09 |
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| CN202021499752.4U Active CN212518838U (en) | 2020-07-27 | 2020-07-27 | Two-dimensional piezoelectric micro-motion mechanism and optical image stabilization compensation lens |
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Assignee: Nanjing University of Engineering Science Park Co.,Ltd. Assignor: NANJING INSTITUTE OF TECHNOLOGY Contract record no.: X2023980033985 Denomination of utility model: A two-dimensional piezoelectric micro motion mechanism and optical image stabilization compensation lens Granted publication date: 20210209 License type: Common License Record date: 20230323 |
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Assignee: Nanjing Institute of Engineering Technical Service Co.,Ltd. Assignor: NANJING INSTITUTE OF TECHNOLOGY Contract record no.: X2023980035197 Denomination of utility model: A two-dimensional piezoelectric micro motion mechanism and optical image stabilization compensation lens Granted publication date: 20210209 License type: Common License Record date: 20230506 |
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Assignee: Nanjing Institute of Engineering Technical Service Co.,Ltd. Assignor: NANJING INSTITUTE OF TECHNOLOGY Contract record no.: X2023980035197 Date of cancellation: 20240301 |