CN205809412U - A kind of with beam type piezoelectric actuator for the distorting lens driven - Google Patents
A kind of with beam type piezoelectric actuator for the distorting lens driven Download PDFInfo
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- CN205809412U CN205809412U CN201620444990.2U CN201620444990U CN205809412U CN 205809412 U CN205809412 U CN 205809412U CN 201620444990 U CN201620444990 U CN 201620444990U CN 205809412 U CN205809412 U CN 205809412U
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Abstract
This utility model provides a kind of with beam type piezoelectric actuator for the distorting lens driven.Described with beam type piezoelectric actuator be drive distorting lens include eyeglass, piezoelectric actuator group and bar pad group, described piezoelectric actuator group includes multiple spaced piezoelectric actuator, described bar pad group includes multiple opposing parallel spaced bar pad, each described piezoelectric actuator is fixed on the back side of described eyeglass by a described bar pad, and each described bar pad to have cross section be foursquare rectangular structure；Each described piezoelectric actuator is all the double piezoelectric actuator of beam type with straight beam structure, and include the first bar shaped piezoelectric layer, bullion layer and the second bar shaped piezoelectric layer being cascading, first bar shaped piezoelectric layer and the second bar shaped piezoelectric layer of described piezoelectric actuator all electrically connect with the external power with identical voltage, described bullion layer is described first bar shaped piezoelectric layer and the common electrode of described second bar shaped piezoelectric layer, and described bullion layer ground connection is arranged.
Description
Technical field
The invention belongs to piezoelectric actuator technical field, be specifically related to a kind of wide range height resonance frequency piezoelectric and promote
Dynamic device.
Background technology
Piezoelectric has outstanding stress-electric coupling performance.The actuator of piezoelectric development has response speed
Hurry up, precision high, have a wide range of applications in industrial quarters.But, on market, piezoelectric actuator has general
Store-through is in the little limitation of range.Owing to range is little, piezoelectric actuator active and self-adaptive optical telescope/radio
It is very restricted in telescope application.Actively need upper frequency bandwidth with ADAPTIVE OPTICS SYSTEMS, and
This is limited by system used actuator resonant frequency in a lot of degree again.
Therefore, it is necessary to provide a kind of with beam type piezoelectric actuator for the distorting lens driven.
Utility model content
The purpose of this utility model is to provide a kind of with beam type piezoelectric actuator for the distorting lens driven.
The technical solution of the utility model is as follows: a kind of with beam type piezoelectric actuator for drive distorting lens include
Overall eyeglass, piezoelectric actuator group in slab construction and be fixed on described piezoelectric actuator group and described
The bar pad group of eyeglass, described piezoelectric actuator group includes multiple spaced piezoelectric actuator, described bar pad
Group includes multiple opposing parallel spaced bar pad, and each described piezoelectric actuator passes through a described bar pad
Be fixed on the back side of described eyeglass, and each described bar pad to have cross section be foursquare rectangular structure；
Each described piezoelectric actuator is all the double piezoelectric actuator of beam type with straight beam structure, and includes stacking gradually
The first bar shaped piezoelectric layer, bullion layer and the second bar shaped piezoelectric layer arranged, the of described piezoelectric actuator
One bar shaped piezoelectric layer and the second bar shaped piezoelectric layer all electrically connect with the external power with identical voltage, described bar shaped
Metal level is described first bar shaped piezoelectric layer and the common electrode of described second bar shaped piezoelectric layer, and described bar shaped
Metal level ground connection is arranged.
Preferably, each described piezoelectric actuator takes the mode of freely-supported to support.
Preferably, described first bar shaped piezoelectric layer and described second bar shaped piezoelectric layer are all to be processed by piezoelectric
Form.
Preferably, described first bar shaped piezoelectric layer, described bullion layer and described second bar shaped piezoelectric layer
Equivalently-sized.
The beneficial effects of the utility model are: described with beam type piezoelectric actuator for drive distorting lens in
Piezoelectric actuator uses the first bar shaped piezoelectric layer, bullion layer and the second bar shaped piezoelectricity being cascading
The three-decker of layer, and described first bar shaped piezoelectric layer applies identical electricity with described second bar shaped piezoelectric layer
During pressure, owing to direction of an electric field is contrary, and polarised direction is identical, the most described first bar shaped piezoelectric layer stretching, institute
State the second bar shaped piezoelectric layer compression, or described second bar shaped piezoelectric layer stretching, described first bar shaped piezoelectric layer
Compression, thus cause whole piezoelectric structure to realize Bending Deformation, as dome in arch, thus obtain wide range.
Accompanying drawing explanation
Fig. 1 is the structure of the distorting lens with beam type piezoelectric actuator for driving that this utility model embodiment provides
Schematic diagram；
Fig. 2 is to show with beam type piezoelectric actuator for the structure of piezoelectric actuator in the distorting lens driven shown in Fig. 1
It is intended to；
Fig. 3 is the bending schematic diagram of piezoelectric actuator shown in Fig. 2.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing
And embodiment, this utility model is further elaborated.Should be appreciated that described herein specifically
Embodiment, only in order to explain this utility model, is not used to limit this utility model.
The description of specific distinct unless the context otherwise, the element in this utility model and assembly, quantity both may be used
Presented in single, it is also possible to presented in multiple, this is not defined by this utility model.
It is appreciated that term "and/or" used herein relates to and contain the one in the Listed Items being associated
Or one or more of any and all possible combination.
Please refer to Fig. 1, Fig. 2 and Fig. 3, Fig. 1 be this utility model embodiment provide with beam type piezoelectricity
Actuator is the structural representation of the distorting lens driven；Fig. 2 is with beam type piezoelectric actuator for driving shown in Fig. 1
The structural representation of piezoelectric actuator in dynamic distorting lens；Fig. 3 is that the bending of piezoelectric actuator shown in Fig. 2 is shown
It is intended to.What this utility model embodiment provided includes whole with beam type piezoelectric actuator for the distorting lens 100 driven
Body is the eyeglass 10 of slab construction, piezoelectric actuator group 20 and is fixed on described piezoelectric actuator group 10
With the bar pad group 30 of described eyeglass 20, described piezoelectric actuator group 20 includes that multiple spaced piezoelectricity promotees
Dynamic device 21, described bar pad group 30 includes multiple opposing parallel spaced bar pad 31, each described piezoelectricity
Actuator 21 is fixed on the back side of described eyeglass 10, and each described bar pad 31 by a described bar pad 31
Having cross section is foursquare rectangular structure.Wherein, described eyeglass 10 is conventional optical glass.
Specifically, each described piezoelectric actuator 21 is all the double piezoelectric actuator of beam type with straight beam structure,
And include the first bar shaped piezoelectric layer 211, bullion layer 212 and the second bar shaped piezoelectric layer being cascading
213, the first bar shaped piezoelectric layer 211 of described piezoelectric actuator 21 and the second bar shaped piezoelectric layer 213 all with tool
The external power having identical voltage electrically connects, and described bullion layer 212 is described first bar shaped piezoelectric layer 211
With the common electrode of described second bar shaped piezoelectric layer 213, and described bullion layer 212 ground connection arrange.Excellent
Selection of land, each described piezoelectric actuator 21 takes the mode of freely-supported to support.Selectively, each described piezoelectricity
Actuator 21 can take the mode of freely-supported to support in the marginal portion of its opposite end.
And, described first bar shaped piezoelectric layer 211 and described second bar shaped piezoelectric layer 213 are all by piezoresistive material
Material processes, described bullion layer 212 can be have the metals such as ferrum, copper, aluminum or its alloy processing and
Becoming, this is not construed as limiting by this utility model.Further, described first bar shaped piezoelectric layer 211, described bar shaped
Metal level 212 and described second bar shaped piezoelectric layer 213 equivalently-sized.
Specifically, the first bar shaped piezoelectric layer 211 of described piezoelectric actuator 20 and the second bar shaped piezoelectric layer 213
Polarised direction is consistent, all along piezoelectric patches surface normal direction.If when described first bar shaped piezoelectric layer 211 He
When described second bar shaped piezoelectric layer 213 applies identical voltage, owing to direction of an electric field is contrary, and polarised direction phase
With, the most described first bar shaped piezoelectric layer 211 stretches, and described second bar shaped piezoelectric layer 213 compresses, or described
First bar shaped piezoelectric layer 211 compresses, and described second bar shaped piezoelectric layer 213 stretches, thus causes whole piezoelectricity to be tied
Structure realizes Bending Deformation, as dome in arch, thus obtains wide range.The shape at its backbone type piezoelectric actuator center
Sell of one's property raw largest deformation displacement, i.e. actuator effective displacement d.
It should be noted that owing to described piezoelectric actuator 21 is all that the double piezoelectricity of beam type with straight beam structure promotees
Dynamic device, and take the mode of freely-supported to support in the marginal portion of its opposite end, so that described piezoelectricity
Actuator 21 is the cleverest to the deformation of described first bar shaped piezoelectric layer 211 and described second bar shaped piezoelectric layer 213
Quick.
Further, knowable to the stress-strain theory of mechanics, the two ends beam type structure that freely-supported supports respectively exists
Under stress effect, due to the string configuration of simply supported beam, it is bigger that it is easier to acquisition under stress distribution effect
Deformation.In the present embodiment, freely-supported is taked to support, then respectively due to the two ends of described piezoelectric actuator 21
When described first bar shaped piezoelectric layer 211 and described second bar shaped piezoelectric layer 213 occur shape under external voltage effect
During change, even if described first bar shaped piezoelectric layer 211 and described second bar shaped piezoelectric layer 213 produce micro-deformation,
By the strip beam texture of the double piezoelectric actuator of described beam type, described micro-deformation can also be amplified, thus
Obtain the effective displacement d of described piezoelectric actuator 21 amplified.
Compared to prior art, the distorting lens 100 being driving with beam type piezoelectric actuator that this utility model provides
In piezoelectric actuator 21 use be cascading the first bar shaped piezoelectric layer 211, bullion layer 212
With the three-decker of the second bar shaped piezoelectric layer 213, and described first bar shaped piezoelectric layer 211 and described second
When bar shaped piezoelectric layer 213 applies identical voltage, owing to direction of an electric field is contrary, and polarised direction is identical, then
Described first bar shaped piezoelectric layer 211 stretches, and described second bar shaped piezoelectric layer 213 compresses, or described second
Bar shaped piezoelectric layer 213 stretches, and described first bar shaped piezoelectric layer 211 compresses, thus causes whole piezoelectric structure
Realize Bending Deformation, as dome in arch, thus obtain wide range.
It is obvious to a person skilled in the art that this utility model is not limited to the thin of above-mentioned one exemplary embodiment
Joint, and in the case of without departing substantially from spirit or essential attributes of the present utility model, it is possible to concrete with other
Form realizes this utility model.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary
, and be nonrestrictive, scope of the present utility model is limited by claims rather than described above
It is fixed, it is intended that all changes fallen in the implication of equivalency and scope of claim are included at this
In utility model.Should not be considered as limiting involved claim by any reference in claim.
Moreover, it will be appreciated that although this specification is been described by according to embodiment, but the most each enforcement
Mode only comprises an independent technical scheme, and this narrating mode of description is only for clarity sake,
Those skilled in the art should be using description as an entirety, and the technical scheme in each embodiment can also be through
Appropriately combined, form other embodiments that it will be appreciated by those skilled in the art that.
Claims (4)
1. the distorting lens that a kind is driving with beam type piezoelectric actuator, it is characterised in that: include overall in flat board
The eyeglass of structure, piezoelectric actuator group and be fixed on the bar pad of described piezoelectric actuator group and described eyeglass
Group, described piezoelectric actuator group includes multiple spaced piezoelectric actuator, and described bar pad group includes multiple
Opposing parallel spaced bar pad, each described piezoelectric actuator is fixed on described by a described bar pad
The back side of eyeglass, and each described bar pad to have cross section be foursquare rectangular structure；
Each described piezoelectric actuator is all the double piezoelectric actuator of beam type with straight beam structure, and includes successively
The first bar shaped piezoelectric layer, bullion layer and the second bar shaped piezoelectric layer, the described piezoelectric actuator that stacking is arranged
The first bar shaped piezoelectric layer and the second bar shaped piezoelectric layer all electrically connect with the external power with identical voltage, described
Bullion layer is described first bar shaped piezoelectric layer and the common electrode of described second bar shaped piezoelectric layer, and described
Bullion layer ground connection is arranged.
It is the most according to claim 1 with beam type piezoelectric actuator for the distorting lens driven, it is characterised in that:
Each described piezoelectric actuator takes the mode of freely-supported to support.
It is the most according to claim 1 with beam type piezoelectric actuator for the distorting lens driven, it is characterised in that:
Described first bar shaped piezoelectric layer and described second bar shaped piezoelectric layer are all to be processed by piezoelectric.
It is the most according to claim 3 with beam type piezoelectric actuator for the distorting lens driven, it is characterised in that:
Described first bar shaped piezoelectric layer, described bullion layer and described second bar shaped piezoelectric layer equivalently-sized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620444990.2U CN205809412U (en) | 2016-05-16 | 2016-05-16 | A kind of with beam type piezoelectric actuator for the distorting lens driven |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620444990.2U CN205809412U (en) | 2016-05-16 | 2016-05-16 | A kind of with beam type piezoelectric actuator for the distorting lens driven |
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| CN205809412U true CN205809412U (en) | 2016-12-14 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106687830B (en) * | 2014-07-18 | 2019-05-10 | 珀莱特股份有限公司 | Piezoelectric actuated optical lens |
| CN110095858A (en) * | 2018-12-12 | 2019-08-06 | 中国科学院紫金山天文台 | Self-adapting optical distorting lens Elastic mode aberration characterizing method |
| CN110212083A (en) * | 2018-02-28 | 2019-09-06 | 成都理想境界科技有限公司 | Piezoelectric device, optical fiber scanning driver, fibre-optic scanner and projection arrangement |
-
2016
- 2016-05-16 CN CN201620444990.2U patent/CN205809412U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106687830B (en) * | 2014-07-18 | 2019-05-10 | 珀莱特股份有限公司 | Piezoelectric actuated optical lens |
| CN110212083A (en) * | 2018-02-28 | 2019-09-06 | 成都理想境界科技有限公司 | Piezoelectric device, optical fiber scanning driver, fibre-optic scanner and projection arrangement |
| CN110212083B (en) * | 2018-02-28 | 2024-05-28 | 成都理想境界科技有限公司 | Piezoelectric device, optical fiber scanning driver, optical fiber scanning device and projection device |
| CN110095858A (en) * | 2018-12-12 | 2019-08-06 | 中国科学院紫金山天文台 | Self-adapting optical distorting lens Elastic mode aberration characterizing method |
| CN110095858B (en) * | 2018-12-12 | 2021-06-08 | 中国科学院紫金山天文台 | Self-adaptive optical deformable mirror elastic modal aberration characterization method |
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