CN205373662U - Dynamic angle measuring device - Google Patents
Dynamic angle measuring device Download PDFInfo
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- CN205373662U CN205373662U CN201620083488.3U CN201620083488U CN205373662U CN 205373662 U CN205373662 U CN 205373662U CN 201620083488 U CN201620083488 U CN 201620083488U CN 205373662 U CN205373662 U CN 205373662U
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- prism
- corner cube
- cube prism
- polarization splitting
- dynamic angle
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Abstract
The utility model discloses a dynamic angle intelligence measuring device, it includes master module and measured module. Master module includes laser source, the polarizer, the polarization splitting prism that disappears, polarization splitting prism, first speculum, the second mirror and third speculum, and this module is still including perpendicular light fourth wave plate, analyser and the photoelectric sensor on the road who is located the polarization splitting prism that disappears. First speculum becomes 45 jiaos of settings with polarization splitting prism's emitting light path, and the second mirror becomes 90 jiaos of settings with polarization splitting prism's emitting light path, and the third speculum becomes 90 jiaos of settings with the perpendicular light path of first speculum. Measured module lies in the 2nd rectangular prism between perpendicular light path of first speculum and third speculum light path including lieing in the rectangular prism between polarization splitting prism emitting light path and the the second mirror light path. The utility model discloses can realize dynamic angle intelligence and measure, improve measurement of efficiency and precision.
Description
Technical field
This utility model belongs to dynamic angle measurement field, more particularly, to a kind of dynamic angle measuring devices.
Background technology
At present, dynamic angle measurement method has a lot.One class is the angle measurement method of non-laser class, this kind of measuring method, such as autocollimator measurement method and level measurement method, it is simple that it measures process, and cost is low, but can not realize Intelligent Dynamic and measure, certainty of measurement is low, is used for the occasion that certainty of measurement requires to be not as high.The another kind of angle measurement method being based on laser, utilizes laser to have energy density height, disperses the excellent performance such as little.
The angle measurement method of laser class is broadly divided into amplitude measurement type and phase measurement type according to Cleaning Principle.The measuring method that amplitude measurement type is is linear datum with laser beam, it is achieved simple, but certainty of measurement is not high.Phase measurement type realizes angular surveying based on laser interferometry, such as Agilent HP5529 series and the vertical laser interference instrument family etc. that continues of thunder.Laser interference method precision is high, but system debugs complexity, uses inconvenience, and requires significantly high to measuring object environment, thus is not suitable for the intelligent measure of dynamic angle.
Accordingly, it would be desirable to develop a kind of simple in construction, dynamic angle intelligent device for measuring easy to use.
Utility model content
Disadvantages described above or Improvement requirement for prior art, this utility model provides a kind of dynamic angle measuring devices that dynamic angle can carry out intelligent measure, by measurement module being integrally provided on the object of dynamic angle to be measured, it is thus possible to reflect the change of object angle to be measured with having no deviation, again through base modules being fixed on outside dynamic angle object to be measured, the laser of this base modules outgoing returns after measurement module, it is thus possible to accurately measure dynamic angle change.This utility model device can realize dynamic angle and efficiently measure accurately.
For achieving the above object, according to an aspect of the present utility model, it is provided that a kind of dynamic angle intelligent device for measuring, it is characterised in that it includes base modules and measurement module,
It is identical that described measurement module includes the first corner cube prism and the second corner cube prism that are mutually juxtaposed setting, described first corner cube prism and the second corner cube prism material, described measurement module on the object being arranged on dynamic angle to be measured with synchronous axial system therewith；
Described base modules is arranged on outside the object of dynamic angle to be measured, it includes the lasing light emitter for providing laser, it is sequentially arranged in the polarizer on the emitting light path of described lasing light emitter, depolarization Amici prism, polarization splitting prism and the first reflecting mirror, also including the quarter-wave plate, analyzer and the photoelectric sensor that are sequentially located on described depolarization Amici prism vertical optical path, it also includes the second reflecting mirror between described polarization splitting prism and the first corner cube prism and the 3rd reflecting mirror between described first reflecting mirror and the second corner cube prism.
In above inventive concept, the polarizer for exporting the line polarized light of light vector and paper angle at 45 ° by described laser；Depolarization Amici prism is for penetrating into polarization splitting prism by described line polarized light；Polarization splitting prism is divided into light vector for the line polarized light that will transmit through described depolarization Amici prism and is perpendicular to the line polarized light of paper and light vector is parallel to the line polarized light of paper, and the line polarized light that light vector is perpendicular to paper reflexes to the first corner cube prism in described measurement module, described light vector is perpendicular to the line polarized light of paper and reflexes to the second reflecting mirror through twice by the first corner cube prism, second reflecting mirror is parallel with described first corner cube prism inclined-plane, and the line polarized light that described light vector is perpendicular to paper is reflected back polarization splitting prism along former road the first corner cube prism；First reflecting mirror is placed at angle at 45 ° with the emitting light path of described polarization splitting prism, and the line polarized light that described light vector is parallel to paper reflexes to the second corner cube prism in measurement module, described light vector is parallel to the line polarized light of paper and reflexes to the 3rd reflecting mirror through twice by the second corner cube prism, 3rd reflecting mirror is parallel with described second corner cube prism inclined-plane, and the line polarized light that described light vector is parallel to paper returns described polarization splitting prism along former road the second corner cube prism and the first reflecting mirror triple reflection；The two orthogonal line polarized lights in light vector direction reflex on quarter-wave plate through described polarization splitting prism through described depolarization Amici prism, quarter-wave plate is for by described two line polarized light synthesis circularly polarized lights, analyzer decomposes same direction for circularly polarized light and interferes, and produces interference fringe；When measurement module on the object being arranged on dynamic angle to be measured with synchronous axial system therewith, described mobile interference fringe also moves, and photoelectric sensor is for being undertaken counting, calculating by described interference fringe, and obtains dynamic angle changing value.
Further, described first corner cube prism and the second corner cube prism shape are identical with structure.
Further, described first corner cube prism and the second corner cube prism are connected to one.
In general, by the contemplated above technical scheme of this utility model compared with prior art, it is possible to obtain following beneficial effect:
In this utility model, measurement module is fixed on the object of dynamic angle to be measured, rotate with described dynamic angle object to be measured, energy real time reaction goes out the change of dynamic angle, base modules has offer and measures the required lasing light emitter of laser, the polarizer, depolarization Amici prism, polarization splitting prism and multiple reflecting mirror, can by laser aiming to measurement module back again on the photoelectric sensor of base modules, thus measuring dynamic angle.Its metering system is simple, has filled up the blank on dynamic angle measurement, has greatly improved measurement efficiency simultaneously, and angular resolution is up to 0.01 μ rad.
Accompanying drawing explanation
Fig. 1 is the index path of the dynamic angle intelligent device for measuring that this utility model embodiment provides；
Fig. 2 is the measuring principle schematic diagram of the dynamic angle intelligent device for measuring that this utility model embodiment provides；
Fig. 3 is the structural representation of measurement module in the dynamic angle intelligent device for measuring that this utility model embodiment provides；
Fig. 4 is the structural representation of base modules in the dynamic angle intelligent device for measuring that this utility model embodiment provides.
In all of the figs, identical accompanying drawing labelling represents identical part or parts, wherein
1-lasing light emitter 2-polarizer 3-depolarization Amici prism
4-polarization splitting prism 5-the first reflecting mirror 6-the second reflecting mirror
7-the 3rd reflecting mirror 8-quarter-wave plate 9-analyzer
10-photoelectric sensor 11-the first corner cube prism 12-the second corner cube prism
A-base modules B-measurement module
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, this utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain this utility model, be not used to limit this utility model.As long as just can be mutually combined additionally, technical characteristic involved in each embodiment of this utility model disclosed below does not constitute conflict each other.
Fig. 1 illustrates the index path of the dynamic angle intelligent device for measuring that this utility model provides, and as seen from the figure, workbench dynamic angle intelligent device for measuring includes base modules A and measurement module B；Base modules A is fixed on outside measurand when using；Measurement module B is placed in measurand and rotates with measurand when using.
Wherein, described base modules A includes: for providing the lasing light emitter 1 of laser, it is sequentially arranged in the polarizer 2 on the emitting light path of described lasing light emitter, depolarization Amici prism 3, polarization splitting prism 4 and the first reflecting mirror 5, also include the second reflecting mirror 6 and the 3rd reflecting mirror 7 laid respectively at below polarization splitting prism 4 and the first reflecting mirror 5, the quarter-wave plate 8 that also includes being positioned on the vertical optical path of depolarization Amici prism 3, analyzer 9, photoelectric sensor 10.Measurement module B includes: the first corner cube prism 11 between polarization splitting prism 4 and the second reflecting mirror 6 and the second corner cube prism 12 between the first reflecting mirror 5 and the 3rd reflecting mirror 7.
Concrete, the polarizer 2 is transformed into and the line polarized light at paper angle at 45 ° for described laser is exported light vector；Depolarization Amici prism 3 is for penetrating into polarization splitting prism 4 by described line polarized light；Polarization splitting prism 4 will transmit through the line polarized light of described depolarization Amici prism 3 and is divided into light vector and is perpendicular to the line polarized light of paper and light vector is parallel to the line polarized light of paper, and the line polarized light that light vector is perpendicular to paper reflexes to the first corner cube prism 11 in described measurement module B, described light vector is perpendicular to the line polarized light of paper and reflexes to the second reflecting mirror 6 through twice by the first corner cube prism 11, second reflecting mirror 6 is parallel with described first corner cube prism 11 inclined-plane, and the line polarized light that described light vector is perpendicular to paper is reflected back polarization splitting prism 4 for twice along former road the first corner cube prism 11；First reflecting mirror 5 is placed at angle at 45 ° with the emitting light path of described polarization splitting prism 4, and the line polarized light that described light vector is parallel to paper reflexes to the second corner cube prism 12 in measurement module B, described light vector is parallel to the line polarized light of paper and reflexes to the 3rd reflecting mirror 7 through twice by the second corner cube prism 12,3rd reflecting mirror 7 is parallel with described second corner cube prism 12 inclined-plane, and the line polarized light that described light vector is parallel to paper returns described polarization splitting prism 4 along former road the second corner cube prism 12 and the first reflecting mirror 5 triple reflection；The two orthogonal line polarized lights in light vector direction reflex on quarter-wave plate 8 through described polarization splitting prism 4 through described depolarization Amici prism 3, quarter-wave plate 8 is for by described two line polarized light synthesis circularly polarized lights, analyzer 9 decomposes same direction for circularly polarized light and interferes, and produces interference fringe；When measurement module on the object being arranged on dynamic angle to be measured with synchronous axial system therewith, described interference fringe also moves, and photoelectric sensor 10 is for being undertaken counting, calculating by described mobile interference fringe, and obtains dynamic angle changing value.
Wherein, second reflecting mirror 6 and the 3rd reflecting mirror 7 can replace by the laser freuqency doubling light path of other optics composition, first corner cube prism 11 and the second corner cube prism 12 can use other types prism, described first corner cube prism 11 is identical with the second corner cube prism 12 material, and depolarization Amici prism 3 and polarization splitting prism 4 all can use other types spectroscope replacement etc..
In one embodiment of this utility model, as in figure 2 it is shown, in measurement process, measurement module B is fixed in measurand and rotates together, causes that measurement module B deflects, and deflection angle is θ, two line polarized light optical path differences change, as in figure 2 it is shown, optical path difference Δ l is
Cause that the line polarized light angle of incidence of entrance the first corner cube prism 11 and the second corner cube prism 12 also becomes θ owing to measurement module B deflects, line polarized light reflects on the first corner cube prism 11 and the second corner cube prism 12 hypotenuse, refraction angle is r, the right angle length of side of the first corner cube prism 11 and the second corner cube prism 12 is p, and two line polarized lights are respectively as follows: at the light path of the first corner cube prism 11 and the second corner cube prism 12
N is the refractive index of corner cube prism, and r is refraction angle, p1、p2And labelling P in p respectively Fig. 21、P2And the size that P is corresponding, meet p1+p2=p.
Can being obtained by above-mentioned two formulas, two line polarized lights are equal all the time at the light path of the first corner cube prism 11 and the second corner cube prism 12, do not change because measurement module B deflection angle changes.
Base modules A is fixed on outside workbench, invariant position between polarization splitting prism 4 therein and the first corner cube prism 5, position between first reflecting mirror 6 and the second reflecting mirror 7 is also constant, if the distance of polarization splitting prism 4 and the first corner cube prism 11 is d, first reflecting mirror 5 and the second reflecting mirror 12 are apart from for d ', two distances are constant, have
Then optical path difference is:
Δ l=2 (d+d') tan θ
By light path operation principle it is known that two line polarized lights reflex on the second reflecting mirror 6 and the 3rd reflecting mirror 7 through the first corner cube prism 11 and the second corner cube prism 12, then reflect, be exaggerated one times equal to optical path difference, i.e. optical frequency-doubling.So, now corresponding moving interference fringes number Δ K is:
Vary less owing to rotating instantaneous angular, it is believed that the dynamic angular angle value that θ ≈ tan θ records is
Such as lasing light emitter 1 wavelength is λ=633nm, in this device d=d '=100mm, is not added with segmentation and frequency multiplication angular resolution isThen can reach the resolution of 0.01 μ rad；Electronic fine-grained according to the fill-in light signal of telecommunication, it is possible to reach higher resolution.
Photoelectric sensor 10 exports the result that dynamic angle records, thus, it is possible to realize dynamic angle intelligent measure.
The structural representation of Fig. 3 and Fig. 4 respectively base modules A and measurement module B.Base modules A and measurement module B is alignd with the first corner cube prism 11 and the second corner cube prism 12 respectively by polarization splitting prism 4 and the first reflecting mirror 5 and forms complete optical path.
Adopting the measurement apparatus that this utility model provides can realize the intelligent measure of dynamic angle, greatly improve measurement efficiency, it is simple to intelligent compensation simultaneously, angular error resolution is up to 0.01 μ rad, and has and debug the feature such as little simple, affected by environment.
Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present utility model; not in order to limit this utility model; all any amendment, equivalent replacement and improvement etc. made within spirit of the present utility model and principle, should be included within protection domain of the present utility model.
Claims (3)
1. a dynamic angle measuring devices, it is characterised in that it includes base modules (A) and measurement module (B),
Described measurement module (B) includes the first corner cube prism (11) and the second corner cube prism (12) that are mutually juxtaposed setting, described first corner cube prism (11) is identical with the second corner cube prism (12) material, described measurement module (B) on the object being arranged on dynamic angle to be measured with synchronous axial system therewith；
Described base modules (A) is arranged on outside the object of dynamic angle to be measured, it includes the lasing light emitter (1) for providing laser, it is sequentially arranged in the polarizer (2) on the emitting light path of described lasing light emitter, depolarization Amici prism (3), polarization splitting prism (4) and the first reflecting mirror (5), also include the quarter-wave plate (8) being sequentially located on described depolarization Amici prism (3) vertical optical path, analyzer (9) and photoelectric sensor (10), its the second reflecting mirror (6) also including being positioned between described polarization splitting prism (4) and the first corner cube prism (11) and be positioned at the 3rd reflecting mirror (7) between described first reflecting mirror (5) and the second corner cube prism (12).
2. a kind of dynamic angle measuring devices as claimed in claim 1, it is characterised in that described first corner cube prism (11) is identical with structure with the second corner cube prism (12) shape.
3. a kind of dynamic angle measuring devices as claimed in claim 1 or 2, it is characterised in that described first corner cube prism (11) and the second corner cube prism (12) are connected to one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620083488.3U CN205373662U (en) | 2016-01-28 | 2016-01-28 | Dynamic angle measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620083488.3U CN205373662U (en) | 2016-01-28 | 2016-01-28 | Dynamic angle measuring device |
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| CN205373662U true CN205373662U (en) | 2016-07-06 |
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| CN201620083488.3U Expired - Fee Related CN205373662U (en) | 2016-01-28 | 2016-01-28 | Dynamic angle measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112066972A (en) * | 2020-09-10 | 2020-12-11 | 北京大学 | Single-light-source dual-polarization optical fiber gyroscope |
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2016
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112066972A (en) * | 2020-09-10 | 2020-12-11 | 北京大学 | Single-light-source dual-polarization optical fiber gyroscope |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160706 Termination date: 20210128 |