CN113608325A - Piezoelectric driving type zoom lens used in micro equipment and adjustment method - Google Patents
Piezoelectric driving type zoom lens used in micro equipment and adjustment method Download PDFInfo
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- CN113608325A CN113608325A CN202110954441.5A CN202110954441A CN113608325A CN 113608325 A CN113608325 A CN 113608325A CN 202110954441 A CN202110954441 A CN 202110954441A CN 113608325 A CN113608325 A CN 113608325A
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000005284 excitation Effects 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 3
- 230000009189 diving Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000006073 displacement reaction Methods 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/09—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted for automatic focusing or varying magnification
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/02—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing linear motion, e.g. actuators; Linear positioners ; Linear motors
- H02N2/021—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing linear motion, e.g. actuators; Linear positioners ; Linear motors using intermittent driving, e.g. step motors, piezoleg motors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/02—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing linear motion, e.g. actuators; Linear positioners ; Linear motors
- H02N2/06—Drive circuits; Control arrangements or methods
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lens Barrels (AREA)
Abstract
The invention relates to a piezoelectric driving type zoom lens and a debugging method used in a miniature device. The debugging method comprises the following steps: the follower a and the follower b share two guide rods to ensure the coaxiality of the lens a and the lens b, and the driving unit a and the driving unit b are independent from each other, so that the lens a and the lens b can move independently according to a specified mode to realize functions of zooming, focusing and the like. Has the advantages that: the focusing mechanism has the advantages of simple structure, small size, high focusing speed and power-off self-locking function, and has wide application prospect in mobile phones, micro robots, unmanned aerial vehicles, security monitoring and other micro equipment.
Description
Technical Field
The invention relates to the technical field of precise optical instruments, in particular to a piezoelectric driving type zoom lens used in micro equipment and an assembling and adjusting method, which have the advantages of large zoom magnification, high focusing speed and the like and can be applied to micro equipment such as mobile phones, micro robots, diving equipment, micro aircrafts and the like.
Background
The zoom lens is an optical lens that changes different viewing ranges by changing the distance between a lens group and a photographic object and obtains an ideal picture. With the development of scientific technology, the demands of miniature devices such as mobile phones, micro robots, diving equipment, micro aircrafts and the like on zoom lenses are increasing day by day, for the existing zoom lenses, the principle of cutting a magnetic field by a coil is mainly utilized to generate displacement output, and the traditional mechanical structure is used for driving the zoom lens in a voice coil motor driving mode, so that the problems of complex structure, large size, inconvenience in assembly and adjustment, gap, noise, slow zooming speed and limited view finding range exist, and due to the existence of the magnetic field, the movement of the zoom lens is unstable, and the zoom lens is not suitable for extreme cold, extreme heat and other extreme environments such as space and the like, and the defects bring great difficulty to the integration and the practical application of the zoom lens in the miniature devices.
Disclosure of Invention
The piezoelectric driving type zoom lens used in the micro equipment solves the problems by adopting a piezoelectric element driving mode, has the advantages of simple structure, small size, stable motion, high zooming and focusing speed and the like, and has wide application prospect in the field of micro equipment photography.
The above object of the present invention is achieved by the following technical solutions:
a piezoelectric driven zoom lens for use in a miniature apparatus is composed of a housing 1, a driving unit a2, a guide shaft a3, a driving unit b4, a guide shaft b5, a follower a6, a follower b7, a lens a8 and a lens b 9; the driving unit a2 consists of a driving shaft a2-1, a piezoelectric transducer a2-2 and a piezoelectric transducer b 2-3; the driving unit b4 consists of a driving shaft b4-1, a piezoelectric transducer c4-2 and a piezoelectric transducer d 4-3; the driven piece a6 consists of a flexible link a6-1, a pre-tightening hole a6-2, a guide hole a6-3, a bearing space a6-4 and a guide hole b 6-5; the driven piece b7 is composed of a flexible link b7-1, a pre-tightening hole b7-2, a guide hole c7-3, a bearing space b7-4 and a guide hole d 7-5.
Another object of the present invention is to provide a method for adjusting a piezoelectric driven zoom lens in a micro device, comprising: the driving unit a2, the guide shaft a3, the driving unit b4 and the guide shaft b5 are fixedly arranged on the shell 1; the pre-tightening hole a6-2 of the driven piece a6 is in fit connection with the driving shaft a2-1 of the driving unit a2, the guide hole a6-3 is in fit connection with the guide shaft a3, and the guide hole b6-5 is in fit connection with the guide shaft b 5; the pre-tightening hole b7-2 of the driven piece b7 is in fit connection with the driving shaft b4-1 of the driving unit b4, the guide hole c7-3 is in fit connection with the guide shaft b5, and the guide hole d7-5 is in fit connection with the guide shaft a 3; the lens a8 is fixedly arranged in the bearing space a6-4 of the follower a 6; the lens b9 is fixedly arranged in the bearing space b7-4 of the follower b 7.
After the installation is finished, the debugging method comprises the following steps:
a) applying to the piezoelectric transducer a2-2 of the drive unit a2
While applying a sinusoidal electrical signal to the piezoelectric transducer b2-3
The outputs of the piezoelectric transducer a2-2 and the piezoelectric transducer b2-3 are coupled to the driving shaft a2-1, so that the driving shaft a2-1 generates sawtooth-like mechanical vibration, and the driving shaft a2-1 drives the driven member a6 to generate stepping motion along the x axis according to the stick-slip driving principle; by controlling the amplitude A, B and phase of the excitation signals of the piezoelectric transducer a2-2 and the piezoelectric transducer b2-3
The adjustment of the movement speed and the forward and reverse directions of the movement can be realized; this step can realize the driving of the lens a 8;
b) application to piezoelectric transducer c4-2 of drive unit b4
While applying a sinusoidal electrical signal to the piezoelectric transducer d4-3
The outputs of the piezoelectric transducer c4-2 and the piezoelectric transducer d4-3 are coupled to the driving shaft a2-1, so that the driving shaft b4-1 generates sawtooth-like mechanical vibration, and the driving shaft b4-1 drives the driven member b7 to generate stepping motion along the x axis according to the stick-slip driving principle; by controlling the amplitude A of the excitation signals of piezoelectric transducer c4-2 and piezoelectric transducer d4-31、B1And phase
The adjustment of the movement speed and the forward and reverse directions of the movement can be realized; this step can achieve the driving of the lens b 9;
c) energizing both drive unit a2 and drive unit b4 simultaneously allows lens a8 and lens b9 to move together, via adjustment A, B, A1、B1、
To change the relative movement direction and movement speed of lens a8 and lens b 9;
d) by separately supplying power to the driving unit a2, the relative positions of the lens a8 and the lens b9 can be adjusted.
The invention has the beneficial effects that: the piezoelectric driving type zoom lens used in the micro equipment and the assembling and adjusting method can realize the integration of the zoom lens in the micro equipment such as a mobile phone, a micro robot and the like, and have the characteristics of simple structure, small size, convenient installation, stable motion, large zoom magnification and the like by utilizing the driving of a piezoelectric element.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention.
FIG. 1 is a perspective view of a piezoelectric driven zoom lens used in a micro device according to the present invention;
FIG. 2 is a top view of a piezo-driven zoom lens for use in a miniature apparatus of the present invention;
fig. 3 is a schematic view of the overall structure of a driving unit a2 according to the present invention;
fig. 4 is a schematic view of the overall structure of a driving unit b4 of the present invention;
fig. 5 is a schematic view of the overall structure of a driven member a6 according to the present invention;
fig. 6 is a schematic view of the overall structure of a follower b7 according to the present invention;
in the figure: 1. a housing; 2. a drive unit a; 2-1, a driving shaft a; 2-2 piezoelectric transducer a; 2-3, piezoelectric transducer b; 3. a guide shaft a; 4. a drive unit b; 4-1, a driving shaft b; 4-2, piezoelectric transducer c; 4-3, piezoelectric transducer d; 5. a guide shaft b; 6. a driven member a; 6-1, flexible link; 6-2, pre-tightening a hole a; 6-3, a guide hole a; 6-4, bearing space a; 6-5, a guide hole b; 7. a driven member b; 7-1, a flexible link b; 7-2, pre-tightening holes b; 7-3, a guide hole c; 7-4, bearing space b; 7-5, a guide hole d; 8. a lens a; 9. and a lens b.
Detailed Description
The details of the present invention and its embodiments are further described below with reference to the accompanying drawings.
Referring to fig. 1 to 2, a piezo-driven zoom lens for use in a micro device is composed of a housing 1, a driving unit a2, a guide shaft a3, a driving unit b4, a guide shaft b5, a follower a6, a follower b7, a lens a8, and a lens b 9.
Referring to FIG. 3, the driving unit a2 is composed of a driving shaft a2-1, a piezoelectric transducer a2-2 and a piezoelectric transducer b 2-3.
Referring to FIG. 4, the driving unit b4 is composed of a driving shaft b4-1, a piezoelectric transducer c4-2 and a piezoelectric transducer d 4-3.
Referring to fig. 5, the driven member a6 is composed of a flexible link a6-1, a pretensioning hole a6-2, a guide hole a6-3, a bearing space a6-4 and a guide hole b 6-5. Wherein the flexible link a6-1 is used to provide friction between the driving shaft a2-1 and the driven member a6 to complete the driving process.
Referring to fig. 6, the driven member b7 is composed of a flexible link b7-1, a pre-tightening hole b7-2, a guide hole c7-3, a bearing space b7-4 and a guide hole d 7-5. Wherein the flexible link b7-1 is used for providing friction between the driving shaft b4-1 and the driven member b7 to complete the driving process.
A method for adjusting a piezoelectric driving type zoom lens in a micro device is characterized in that: the driving unit a2, the guide shaft a3, the driving unit b4 and the guide shaft b5 are fixedly arranged on the shell 1; the pre-tightening hole a6-2 of the driven piece a6 is in fit connection with the driving shaft a2-1 of the driving unit a2, the guide hole a6-3 is in fit connection with the guide shaft a3, and the guide hole b6-5 is in fit connection with the guide shaft b 5; the pre-tightening hole b7-2 of the driven piece b7 is in fit connection with the driving shaft b4-1 of the driving unit b4, the guide hole c7-3 is in fit connection with the guide shaft b5, and the guide hole d7-5 is in fit connection with the guide shaft a 3; the lens a8 is fixedly arranged in the bearing space a6-4 of the follower a 6; the lens b9 is fixedly arranged in the bearing space b7-4 of the follower b 7.
After the installation is finished, the debugging method comprises the following steps:
a) applying to the piezoelectric transducer a2-2 of the drive unit a2
While applying a sinusoidal electrical signal to the piezoelectric transducer b2-3
The outputs of the piezoelectric transducer a2-2 and the piezoelectric transducer b2-3 are coupled to the driving shaft a2-1, so that the driving shaft a2-1 generates sawtooth-like mechanical vibration, and the driving shaft a2-1 drives the driven member a6 to generate stepping motion along the x axis according to the stick-slip driving principle; by controlling the amplitude A, B and phase of the excitation signals of the piezoelectric transducer a2-2 and the piezoelectric transducer b2-3
The adjustment of the movement speed and the forward and reverse directions of the movement can be realized; this step can realize the driving of the lens a 8;
b) application to piezoelectric transducer c4-2 of drive unit b4
While applying a sinusoidal electrical signal to the piezoelectric transducer d4-3
The outputs of the piezoelectric transducer c4-2 and the piezoelectric transducer d4-3 are coupled to the driving shaft a2-1, so that the driving shaft b4-1 generates sawtooth-like mechanical vibration, and the driving shaft b4-1 drives the driven member b7 to generate stepping motion along the x axis according to the stick-slip driving principle; by controlling the amplitude A of the excitation signals of piezoelectric transducer c4-2 and piezoelectric transducer d4-31、B1And phase
The adjustment of the movement speed and the forward and reverse directions of the movement can be realized; this step can achieve the driving of the lens b 9;
c) energizing both drive unit a2 and drive unit b4 simultaneously allows lens a8 and lens b9 to move together, via adjustment A, B, A1、B1、
To change the relative movement direction and movement speed of lens a8 and lens b 9;
d) by separately supplying power to the driving unit a2, the relative positions of the lens a8 and the lens b9 can be adjusted.
The above description is only a preferred example of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like of the present invention shall be included in the protection scope of the present invention.
Claims (2)
1. A piezoelectric driven zoom lens for use in a miniature apparatus, characterized in that: the device comprises a shell (1), a driving unit a (2), a guide shaft a (3), a driving unit b (4), a guide shaft b (5), a driven part a (6), a driven part b (7), a lens a (8) and a lens b (9); the driving unit a (2) consists of a driving shaft a (2-1), a piezoelectric transducer a (2-2) and a piezoelectric transducer b (2-3); the driving unit b (4) consists of a driving shaft b (4-1), a piezoelectric transducer c (4-2) and a piezoelectric transducer d (4-3); the driven part a (6) consists of a flexible link a (6-1), a pre-tightening hole a (6-2), a guide hole a (6-3), a bearing space a (6-4) and a guide hole b (6-5); the driven piece b (7) consists of a flexible link b (7-1), a pre-tightening hole b (7-2), a guide hole c (7-3), a bearing space b (7-4) and a guide hole d (7-5).
2. A method for adjusting a piezoelectric driving type zoom lens in a micro device is characterized in that: the driving unit a (2), the guide shaft a (3), the driving unit b (4) and the guide shaft b (5) are fixedly arranged on the shell (1); the pre-tightening hole a (6-2) of the driven part a (6) is connected with the driving shaft a (2-1) of the driving unit a (2) in a matching way, the guide hole a (6-3) is connected with the guide shaft a (3) in a matching way, and the guide hole b (6-5) is connected with the guide shaft b (5) in a matching way; a pre-tightening hole b (7-2) of the driven member b (7) is in fit connection with a driving shaft b (4-1) of the driving unit b (4), a guide hole c (7-3) is in fit connection with a guide shaft b (5), and a guide hole d (7-5) is in fit connection with a guide shaft a (3); the lens a (8) is fixedly arranged in the bearing space a (6-4) of the driven part a (6); the lens b (9) is fixedly arranged in a bearing space b (7-4) of the driven piece b (7); the debugging method comprises the following steps:
a) applying to the piezoelectric transducer a (2-2) of the drive unit a (2)
Is sinusoidalElectrical signals applied to the piezoelectric transducer b (2-3) simultaneously
The outputs of the piezoelectric transducers a (2-2) and b (2-3) are coupled to the driving shaft a (2-1), so that sawtooth-like wave mechanical vibration is generated on the driving shaft a (2-1), and the driving shaft a (2-1) drives the driven member a (6) to generate stepping motion along the x axis according to the stick-slip driving principle; by controlling the amplitude A, B and phase of the excitation signals of piezoelectric transducer a (2-2) and piezoelectric transducer b (2-3)
The adjustment of the movement speed and the forward and reverse directions of the movement can be realized; this step can realize the driving of the lens a (8);
b) application to piezoelectric transducer c (4-2) of drive unit b (4)
While applying a sinusoidal electric signal to the piezoelectric transducer d (4-3)
The outputs of the piezoelectric transducer c (4-2) and the piezoelectric transducer d (4-3) are coupled to the driving shaft a (2-1), so that sawtooth-like wave mechanical vibration is generated on the driving shaft b (4-1), and the driving shaft b (4-1) drives the driven member b (7) to generate stepping motion along the x axis according to the stick-slip driving principle; by controlling the amplitude A of the excitation signals of piezoelectric transducer c (4-2) and piezoelectric transducer d (4-3)1、B1And phase
The adjustment of the movement speed and the forward and reverse directions of the movement can be realized; this step can realize the driving of the lens b (9);
c) simultaneous energization of drive unit a (2) and drive unit b (4) allows lens a (8) and lens b (9) to move together, via adjustment A, B, A1、B1、
To change the relative movement direction and movement speed of the lens a (8) and the lens b (9);
d) the relative positions of the lens a (8) and the lens b (9) can be adjusted by supplying power to the driving unit a (2) alone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110954441.5A CN113608325B (en) | 2021-08-19 | 2021-08-19 | Piezoelectric driving type zoom lens used in micro equipment and adjusting method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110954441.5A CN113608325B (en) | 2021-08-19 | 2021-08-19 | Piezoelectric driving type zoom lens used in micro equipment and adjusting method |
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| Publication Number | Publication Date |
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| CN113608325A true CN113608325A (en) | 2021-11-05 |
| CN113608325B CN113608325B (en) | 2023-03-31 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1955775A (en) * | 2005-10-24 | 2007-05-02 | 富士能株式会社 | Lens device |
| CN101556366A (en) * | 2008-04-09 | 2009-10-14 | 鸿富锦精密工业（深圳）有限公司 | Zoom lens driving device |
| CN210626755U (en) * | 2019-07-30 | 2020-05-26 | 南昌欧菲光电技术有限公司 | Camera module, lens assembly thereof and mobile terminal |
| CN113193780A (en) * | 2021-05-31 | 2021-07-30 | 吉林大学 | Microminiature two-degree-of-freedom ultrasonic motor and driving method thereof |
-
2021
- 2021-08-19 CN CN202110954441.5A patent/CN113608325B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1955775A (en) * | 2005-10-24 | 2007-05-02 | 富士能株式会社 | Lens device |
| CN101556366A (en) * | 2008-04-09 | 2009-10-14 | 鸿富锦精密工业（深圳）有限公司 | Zoom lens driving device |
| CN210626755U (en) * | 2019-07-30 | 2020-05-26 | 南昌欧菲光电技术有限公司 | Camera module, lens assembly thereof and mobile terminal |
| CN113193780A (en) * | 2021-05-31 | 2021-07-30 | 吉林大学 | Microminiature two-degree-of-freedom ultrasonic motor and driving method thereof |
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| CN113608325B (en) | 2023-03-31 |
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