CN106225730A - Portable combined zeroing high-precision laser big working distance autocollimation and method - Google Patents
Portable combined zeroing high-precision laser big working distance autocollimation and method Download PDFInfo
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- CN106225730A CN106225730A CN201610638880.4A CN201610638880A CN106225730A CN 106225730 A CN106225730 A CN 106225730A CN 201610638880 A CN201610638880 A CN 201610638880A CN 106225730 A CN106225730 A CN 106225730A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
- G01C15/002—Active optical surveying means
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
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Abstract
The invention belongs to Technology of Precision Measurement field and optical engineering field, be specifically related to portable combined zeroing high-precision laser big working distance autocollimation and method；This device is made up of light source, collimating mirror, reflecting mirror and feedback imaging system；The method, by adjusting reflecting mirror, makes reflection light beam return to feed back imaging system image plane center, and the angular deflection measurement apparatus on recycling reflecting mirror obtains the angle change on measured object surface；Owing to the present invention adds reflecting mirror on tradition auto-collimation angle measurement system, therefore, it is possible to the problem avoided measured object reflection light deviation measurement system and cause measuring, and then there is increase auto-collimation working range under identical operating distance, or under identical working range, increase the advantage of operating distance；Additionally, the specific design of collimating mirror, feedback imaging system, reflecting mirror etc., the present invention is made also to have miniature portable, certainty of measurement height；Measurement environmental stability can also be monitored simultaneously；And the technical advantage quickly measured.
Description
Technical field
The invention belongs to Technology of Precision Measurement field and optical engineering field, be specifically related to portable combined zeroing high accuracy
Laser big working distance autocollimation and method.
Background technology
In Technology of Precision Measurement field, optical engineering field, the most advanced branches of science experiment field and high-end precision assembly manufacture neck
In territory, urgent needs carries out wide working range, high-precision laser auto-collimation technology under big working distance.It supports above-mentioned field
Technology and the development of instrument and equipment.
At Technology of Precision Measurement and instrument field, Laser Autocollimator combines with Circular gratings, can carry out any line angle degree
Measure；Laser auto-collimation technology combines with polygon, can carry out face angular surveying and circular division is measured；Maximum functional distance
From several meters to rice up to a hundred；Resolving power is from 0.1 rad to 0.001 rad.
Field, two round light that Laser Autocollimator is the most vertical with bidimensional are tested in optical engineering field and the most advanced branches of science
Grid combine, and can carry out the measurement of space angle；Formed position reference by two-way Laser Autocollimator, optical axis two-by-two can be carried out
Angle or the measurement of collimation.Angle working range tens rads to tens jiaos points.
Manufacture field at most advanced branches of science experimental provision and high-end precision assembly, use Laser Autocollimator can measure tip
Scientific experiments device and the angle rotating accuracy of high-end precision assembly gyration benchmark, measure the space line of linear motion benchmark
The depth of parallelism of precision and two-by-two motion benchmark and perpendicularity.
Laser auto-collimation technology has the advantages such as noncontact, certainty of measurement are high, easy to use, has wide in above-mentioned field
General application.
Tradition autocollimator is as it is shown in figure 1, this system includes light source 1, transmission-type collimating mirror 21 and feedback imaging system
6；The light beam of light source 1 outgoing, after transmission-type collimating mirror 21 is collimated into collimated light beam, incides the reflecting surface of measured object 5；From
The light beam of measured object 5 reflective surface, is gathered imaging by feedback imaging system 6.Under this structure, only from measured object 5 surface
The nearly backtracking of light beam of reflection, could be gathered imaging by feedback imaging system 6, and then realize effectively measuring.This Jin Yuan road
The condition returned limits so that the following two aspect shortcomings of this system existence:
The first, measurand 5 mirror surface normal can not be too big with the scope of Laser Autocollimator optical axis included angle, otherwise can
Cause the entrance pupil of reflection BEAM SQUINT Laser Autocollimator optical system, and then cause realizing auto-collimation and the survey of micro-angle
Amount；
The second, measurand 5 mirror surface range measurement Laser Autocollimator entrance pupil must not be too far away, if otherwise reflection light
Axle and autocollimator optical axis deviation minute angle will result in the entrance pupil of reflection BEAM SQUINT Laser Autocollimator optical system, enter
And cause realizing auto-collimation and micro-angular surveying.
Two above problem, makes tradition auto-collimation instrument can only be limited under low-angle, little operating distance use.
Summary of the invention
For two problems existing for tradition autocollimator, the invention discloses a kind of portable combined zeroing high accuracy
Laser big working distance autocollimation and method, compared with tradition autocollimator, have and dramatically increase under identical operating distance
Auto-collimation working range, or under identical auto-collimation working range, dramatically increase the technical advantage of operating distance.
The object of the present invention is achieved like this:
Portable combined zeroing high-precision laser big working distance autocollimation, including light source, reflective collimating mirror, reflection
Mirror and feedback imaging system, described reflecting mirror is provided with angle adjustment measurement apparatus；The light beam of light source outgoing, through anti-
After the formula collimating mirror of penetrating is collimated into collimated light beam, then reflected by reflecting mirror, incide the surface of measured object；Reflect from measured object surface
Light beam, then through reflecting mirror reflect after, by feedback imaging system gather imaging；
Described feedback imaging system is in following two form:
The first, feedback imaging system includes imageing sensor imaging system and 4 quadrant detector imaging system；
Described imageing sensor imaging system includes the first feedback spectroscope and is arranged on reflective collimating mirror focal point
Imageing sensor；From the light beam of measured object surface reflection, then after reflecting mirror reflects, successively throw through reflective collimating mirror
Penetrate, first feedback dichroic mirror, gathered imaging by imageing sensor；Under conditions of measured object surface is vertical with optical axis, figure
As sensor is become a picture in image plane center position；
Or
Described imageing sensor imaging system includes the first feedback spectroscope, the first feedback object lens and is arranged on the first feedback
Imageing sensor at object focal point；From the light beam of measured object surface reflection, then after reflecting mirror reflects, successively through first
Feed back dichroic mirror, the first feedback object lens transmission, gathered imaging by imageing sensor；Vertical with optical axis on measured object surface
Under the conditions of, imageing sensor is become a picture in image plane center position；
Described 4 quadrant detector imaging system includes the second feedback spectroscope and is arranged on reflective collimating mirror focal point
4 quadrant detector；From the light beam of measured object surface reflection, then after reflecting mirror reflects, successively through reflective collimating mirror
Projection, first feedback dichroic mirror, gathered imaging by 4 quadrant detector；In the condition that measured object surface is vertical with optical axis
Under, 4 quadrant detector is become a picture in image plane center position；
Or
Described 4 quadrant detector imaging system includes the second feedback spectroscope, the second feedback object lens and to be arranged on second anti-
4 quadrant detector at feedback object focal point；From the light beam of measured object surface reflection, then after reflecting mirror reflects, successively pass through
Second feedback dichroic mirror, second feedback object lens transmission, gathered imaging by 4 quadrant detector；At measured object surface and optical axis
Under conditions of Chui Zhi, 4 quadrant detector is become a picture in image plane center position；
The second, feedback imaging system includes the first feedback spectroscope and the imageing sensor carried by guide rail and four-quadrant
Limit detector, described guide rail has two stall position, and a stall position makes imageing sensor image plane center correspondence reflective
The focal position of collimating mirror, another stall position makes the focus position of the corresponding reflective collimating mirror of 4 quadrant detector image plane center
Put；
Or
Feedback imaging system includes the first feedback spectroscope, the first feedback object lens and the image sensing carried by guide rail
Device and 4 quadrant detector, described guide rail has two stall position, and a stall position makes imageing sensor image plane center position
In the focal position of the first feedback object lens, another stall position makes 4 quadrant detector image plane center be positioned at the first feedback object lens
Focal position；
Described angle adjustment measurement apparatus includes arranging angular adjustment apparatus on the mirror, dress is measured in angular deflection
Putting and universal drive shaft, angular adjustment apparatus includes the first driver and the second driver；Angular deflection measurement apparatus includes first
Sheet metal, the second sheet metal, the first capacitance sensor of corresponding first sheet metal position and corresponding second sheet metal position
Second capacitance sensor；First driver, the first sheet metal and universal drive shaft point-blank, the second driver, the second gold medal
Belong to sheet and universal drive shaft point-blank, and the first driver second driver vertical with the line of universal drive shaft is with universal
The line of axle；Angular deflection measurement apparatus also includes common light path autocollimator.
Realize on above-mentioned portable portable combined zeroing high-precision laser big working distance autocollimation is portable
Portable combined zeroing high-precision laser big working distance auto-collimation method, comprises the following steps:
Step a, some bright light source, imageing sensor imaging, according to a picture deviation image plane center direction, utilize the first driver
Adjust mirror angle with the second driver, make a picture return to imageing sensor image plane center region；
Step b, 4 quadrant detector imaging, obtain some picture deviation 4 quadrant detector image plane center position after step a terminates
Put Δ x and Δ y, utilize the first driver and the second driver to adjust mirror angle, make a picture return to 4 quadrant detector picture
Center, face；
Step c, read the capacitance change, Δ C1 of the first capacitance sensor, and the capacitance change, Δ of the second capacitance sensor
C2, is reconverted into angle changes delta θ 1 He of reflecting mirrorObtained the angle of reflecting mirror by common light path autocollimator simultaneously
Changes delta θ 2 HeAnd then obtain angle changes delta α and the Δ β on measured object surface；Wherein, Δ θ 1=f1 (Δ C1, Δ C2),WithF1, f2, f3, f4 table
Show 4 functions.
Above-mentioned portable combined zeroing high-precision laser big working distance autocollimation, also includes Wavefront detecting system and ripple
Precompensation system；
Described Wavefront detecting system includes Wavefront detecting spectroscope and air agitation wave front detector and reflecting mirror deformation
At least one in wave front detector；Described Wavefront detecting spectroscope is arranged between reflecting mirror and measured object, air agitation ripple
Front detector is arranged on the spectroscopical reflected light path of Wavefront detecting, and reflecting mirror deformation wave front detector is arranged on the two of reflecting mirror
In secondary reflection light path；
Described wavefront compensation system includes compensatory light, compensates collimating mirror and transmission liquid crystal spatial light modulator；Mend
Repay the light beam of light source outgoing, after overcompensation collimating mirror is collimated into collimated light beam, then adjusted by transmission liquid crystal spatial light modulator
System, incides on Wavefront detecting spectroscope.
Above-mentioned portable portable combined zeroing high-precision laser big work autocollimation on realize portable just
Take formula combination zeroing high-precision laser big working distance auto-collimation method, it is desirable to Wavefront detecting system only includes Wavefront detecting spectroscope
With air agitation wave front detector；
Comprise the following steps:
Step a, choose surface and be perpendicular to the reference substance of optical axis direction；
Step b, some bright light source, be individually positioned in operating position A and nearly operating position B by the reference substance selected by step a,
Air agitation wave front detector respectively obtains two groups of data of GA and GB；
Step c, G1=GA-GB, obtain the wavefront variation that air agitation causes；
Step d, according to f5 (G1) adjust transmission liquid crystal spatial light modulator parameter, light compensatory light, make-up air
Disturbance；
Step e, imageing sensor imaging, according to a picture deviation image plane center direction, utilize the first driver and second to drive
Dynamic device adjusts mirror angle, makes a picture return to imageing sensor image plane center region；
Step f, 4 quadrant detector imaging, obtain some picture deviation 4 quadrant detector image plane center position after step a terminates
Put Δ x and Δ y, utilize the first driver and the second driver to adjust mirror angle, make a picture return to 4 quadrant detector picture
Center, face；
Step g, read the capacitance change, Δ C1 of the first capacitance sensor, and the capacitance change, Δ of the second capacitance sensor
C2, is reconverted into angle changes delta θ 1 He of reflecting mirrorObtained the angle change of reflecting mirror by common light path autocollimator simultaneously
Change Δ θ 2 HeAnd then obtain angle changes delta α and the Δ β on measured object surface；Wherein, Δ θ 1=f1 (Δ C1, Δ C2),WithF1, f2, f3, f4 table
Show 4 functions.
Realize on above-mentioned portable portable combined zeroing high-precision laser big working distance autocollimation is portable
Portable combined zeroing high-precision laser big working distance auto-collimation method, it is desirable to Wavefront detecting system only includes Wavefront detecting light splitting
Mirror and reflecting mirror deformation wave front detector；
Comprise the following steps:
Step a, choose surface and be perpendicular to the reference substance of optical axis direction；
Step b, some bright light source, be individually positioned in operating position A and nearly operating position B by the reference substance selected by step a,
Reflecting mirror deformation wave front detector respectively obtains two groups of data of GC and GD；
Step c, G2=GC-GD, obtain air agitation and wavefront variation that reflecting mirror deformation causes jointly；
Step d, according to f5 (G2) adjust transmission liquid crystal spatial light modulator parameter, light compensatory light, make-up air
Disturbance and reflecting mirror deformation；
Step e, imageing sensor imaging, according to a picture deviation image plane center direction, utilize the first driver and second to drive
Dynamic device adjusts mirror angle, makes a picture return to imageing sensor image plane center region；
Step f, 4 quadrant detector imaging, obtain some picture deviation 4 quadrant detector image plane center position after step a terminates
Put Δ x and Δ y, utilize the first driver and the second driver to adjust mirror angle, make a picture return to 4 quadrant detector picture
Center, face；
Step g, read the capacitance change, Δ C1 of the first capacitance sensor, and the capacitance change, Δ of the second capacitance sensor
C2, is reconverted into angle changes delta θ 1 He of reflecting mirrorObtained the angle change of reflecting mirror by common light path autocollimator simultaneously
Change Δ θ 2 HeAnd then obtain angle changes delta α and the Δ β on measured object surface；Wherein, Δ θ 1=f1 (Δ C1, Δ C2),WithF1, f2, f3, f4 table
Show 4 functions.
Realize on above-mentioned portable portable combined zeroing high-precision laser big working distance autocollimation is portable
Portable combined zeroing high-precision laser big working distance auto-collimation method, it is desirable to Wavefront detecting system includes that Wavefront detecting divides simultaneously
Light microscopic, air agitation wave front detector and reflecting mirror deformation wave front detector；
Comprise the following steps:
Step a, choose surface and be perpendicular to the reference substance of optical axis direction；
Step b, some bright light source, be individually positioned in operating position A and nearly operating position B by the reference substance selected by step a,
Air agitation wave front detector respectively obtains two groups of data of GA and GB, and reflecting mirror deformation wave front detector respectively obtains GC and GD two
Group data；
Step c, G1=GA-GB, obtain the wavefront variation that air agitation causes；G2=GC-GD, obtains air agitation with anti-
Penetrate the wavefront variation that mirror deformation causes jointly；G=G2-G1, obtains the wavefront variation that reflecting mirror deformation causes；
Step d,
Adjust transmission liquid crystal spatial light modulator parameter according to f5 (G1), light compensatory light, make-up air disturbance；
Or
Adjust transmission liquid crystal spatial light modulator parameter according to f5 (G2), light compensatory light, make-up air disturbance and
Reflecting mirror deformation；
Or
Adjust transmission liquid crystal spatial light modulator parameter according to f5 (G), light compensatory light, compensatory reflex mirror deformation；
Step e, imageing sensor imaging, according to a picture deviation image plane center direction, utilize the first driver and second to drive
Dynamic device adjusts mirror angle, makes a picture return to imageing sensor image plane center region；
Step f, 4 quadrant detector imaging, obtain some picture deviation 4 quadrant detector image plane center position after step a terminates
Put Δ x and Δ y, utilize the first driver and the second driver to adjust mirror angle, make a picture return to 4 quadrant detector picture
Center, face；
Step g, read the capacitance change, Δ C1 of the first capacitance sensor, and the capacitance change, Δ of the second capacitance sensor
C2, is reconverted into angle changes delta θ 1 He of reflecting mirrorObtained the angle change of reflecting mirror by common light path autocollimator simultaneously
Change Δ θ 2 HeAnd then obtain angle changes delta α and the Δ β on measured object surface；Wherein, Δ θ 1=f1 (Δ C1, Δ C2),WithF1, f2, f3, f4 table
Show 4 functions.
Beneficial effect:
Compared with tradition autocollimator, invention increases reflecting mirror and angle adjustment measurement on the mirror is set
Device, this structure is arranged, it is possible to has bigger drift angle or there is relatively larger transverse position between measured object incident illumination and reflection light
In the case of shifting, adjust reflecting mirror attitude by angle adjustment measurement apparatus, it is ensured that reflection light backtracking is also fed back imaging
System receives, and then is prevented effectively from measured object reflection light deviation measurement system and causes the problem that cannot measure, and then makes this
Invent to have under identical operating distance, dramatically increase auto-collimation working range, or significantly increase under identical auto-collimation working range
Add the technical advantage of operating distance.
In addition, the present invention also has following a few technical advantage:
The first, reflective collimating mirror is selected, although add manufacture difficulty, improve cost of manufacture, but this structure
There are the following three irreplaceable technical advantages of aspect: the most reflective collimating mirror is conducive to instrument miniaturization, makes portable
Instrument；Secondly reflective collimating mirror no color differnece, light source frequency range is the widest, and the advantage of its certainty of measurement is the most obvious；3rd is by plating
Membrane technology, it is possible to the heat absorption realizing reflective collimating mirror is far smaller than transmission-type, is prevented effectively from sending out of collimating mirror thermal deformation problem
Raw, this not only enables whole system mate high power light source, and is also beneficial to ensure the measuring precision；
The second, select imageing sensor and 4 quadrant detector collectively as the image device in feedback imaging system, knot
Close the advantage that image area sensor is big and 4 quadrant detector position resolution is high；Wherein, imageing sensor can be true
Protecting in the case of measured object reflection light and incident illumination drift angle are relatively big, reflection light still is able to enter the entrance pupil of optical system, will not
Beyond range of receiving；On this basis, recycling reflecting mirror realizes the quickly return compensation in real time of reflection light, is adjusted to by reflection light
4 quadrant detector position, can obtain higher angle according to the high position resolution advantage of 4 quadrant detector again and survey
Accuracy of measurement；Therefore, imageing sensor and 4 quadrant detector are combined, not only make auto-collimation working range of the present invention or work
Greatly extended as distance, and be conducive to improving angle-measurement accuracy；
3rd, select capacitance sensor and be total to light path autocollimator collectively as angular deflection measurement apparatus so that this
The bright superelevation displacement sensory characteristic that can not only utilize capacitance sensor and in the range of minute angle displacement of the lines be prone to conversion
Good characteristic for angular displacement so that the present invention can have the highest survey under the conditions of low sample frequency (20Hz and following)
Accuracy of measurement, angle highest measurement resolving power can bring up to 0.0005 rad from 0.005 rad of tradition autocollimator, improve one
The order of magnitude；And common light path autocollimator certainty of measurement can be utilized to be affected little good characteristic by air ambient change so that
The present invention can be under the measurement environment that air ambient is unstable, it is ensured that measures and effectively carries out；The two combines, moreover it is possible to play prison
Measure the effect of environmental stability；
4th, the present invention additionally uses techniques below: the first driver, the first sheet metal and universal drive shaft are straight at one article
On line, the second driver, the second sheet metal and universal drive shaft point-blank, and the company of the first driver and universal drive shaft
Vertical second driver of line and the line of universal drive shaft；The orthogonal two dimension of this two lines is arranged so that different line sides
To data non-interference, it is not necessary to decoupling computing, so can conveniently demarcate, simplify calculating process, improve measuring speed.
Accompanying drawing explanation
Fig. 1 is the structural representation of tradition auto-collimation angle measurement system.
Fig. 2 is the knot of portable combined of the present invention zeroing high-precision laser big working distance autocollimation specific embodiment one
Structure schematic diagram.
Fig. 3 is the structural representation of angular adjustment apparatus in angle adjustment measurement apparatus.
Fig. 4 is the first structural representation of angular deflection measurement apparatus in angle adjustment measurement apparatus.
Fig. 5 is the second structural representation of angular deflection measurement apparatus in angle adjustment measurement apparatus.
Fig. 6 is the second structural representation of imageing sensor imaging system.
Fig. 7 is the second structural representation of 4 quadrant detector imaging system.
Fig. 8 is the of portable combined of the present invention zeroing high-precision laser big working distance autocollimation specific embodiment two
A kind of structural representation.
Fig. 9 is the of portable combined of the present invention zeroing high-precision laser big working distance autocollimation specific embodiment two
Two kinds of structural representations.
Figure 10 is portable combined of the present invention zeroing high-precision laser big working distance autocollimation specific embodiment three
Structural representation.
Figure 11 is portable combined of the present invention zeroing high-precision laser big working distance autocollimation specific embodiment four
Structural representation.
Figure 12 is portable combined of the present invention zeroing high-precision laser big working distance autocollimation specific embodiment five
Structural representation.
In figure: 1 light source, 22 reflective collimating mirrors, 3 reflecting mirrors, 4 angle adjustment measurement apparatus, 411 first drivers, 412
Second driver, 421 first sheet metals, 422 second sheet metals, 423 first capacitance sensors, 424 second capacitance sensors,
429 tradition auto-collimation systems, 43 universal drive shafts, 5 measured objects, 6 feedback imaging systems, 61 first feedback spectroscopes, 62 second feedbacks
Spectroscope, 63 first feedback object lens, 64 second feedback object lens, 65 imageing sensors, 66 4 quadrant detectors, 68 guide rails, 7 wavefront
Detection system, 71 Wavefront detecting spectroscopes, 72 air agitation wave front detectors, 73 reflecting mirror deformation wave front detectors, 8 wavefront are mended
Repay system, 81 compensatory lights, 82 compensation collimating mirror, 83 transmission liquid crystal spatial light modulators.
Specific embodiment
Below in conjunction with the accompanying drawings the specific embodiment of the invention is described in further detail.
Specific embodiment one
The present embodiment is portable combined zeroing high-precision laser big working distance autocollimation embodiment.
The portable combined zeroing high-precision laser big working distance autocollimation of the present embodiment, structural representation such as Fig. 2
Shown in.This autocollimation includes light source 1, reflective collimating mirror 22, reflecting mirror 3 and feedback imaging system 6, described reflection
Angle adjustment measurement apparatus 4 it is provided with on mirror 3；The light beam of light source 1 outgoing, is collimated into collimated light beam through reflective collimating mirror 22
After, then reflected by reflecting mirror 3, incide the surface of measured object 5；From the light beam of measured object 5 surface reflection, then through reflecting mirror 3
After reflection, feedback imaging system 6 gather imaging；
Described feedback imaging system 6 includes imageing sensor imaging system and 4 quadrant detector imaging system；
Described imageing sensor imaging system includes the first feedback spectroscope 61 and is arranged on transmission-type collimating mirror 21 focus
The imageing sensor 65 at place；From the light beam of measured object 5 surface reflection, then after reflecting mirror 3 reflects, successively through transmission-type quasi
Straight mirror 21 projects, the first feedback spectroscope 61 reflects, gathered imaging by imageing sensor 65；Hang down with optical axis on measured object 5 surface
Under conditions of Zhi, imageing sensor 65 is become a little as in image plane center position；
Described 4 quadrant detector imaging system includes that the second feedback spectroscope 62, second feeds back object lens 64 and is arranged on the
The 4 quadrant detector 66 of two feedback object lens 64 focal point；From the light beam of measured object 5 surface reflection, then reflect through reflecting mirror 3
After, successively through second feedback spectroscope 62 reflect, second feedback object lens 64 transmission, gathered imaging by 4 quadrant detector 66；
Under conditions of measured object 5 surface is vertical with optical axis, 4 quadrant detector 66 is become a little as in image plane center position；
Described angle adjustment measurement apparatus 4 includes that dress is measured in the angular adjustment apparatus being arranged on reflecting mirror 3, angular deflection
Putting and universal drive shaft 43, angular adjustment apparatus includes the first driver 411 and the second driver 412；Angular deflection measurement apparatus
Including first sheet metal the 421, second sheet metal 422, the first capacitance sensor 423 of corresponding first sheet metal 421 position and
Second capacitance sensor 424 of corresponding second sheet metal 422 position；First driver the 411, first sheet metal 421 and universal
Axle 43 point-blank, second driver the 412, second sheet metal 422 and universal drive shaft 43 point-blank, and
One driver 411, second driver 412 vertical with the line of universal drive shaft 43 and the line of universal drive shaft 43, as shown in Figure 3；Angle is inclined
Turn measurement apparatus and also include that common light path autocollimator 429, described light path autocollimator 429 altogether may be mounted at appointing of reflecting mirror 3
Meaning one side, as shown in Figure 4 and Figure 5.
It should be understood that
The first, in the present embodiment, imageing sensor imaging system can also select following structure: includes that the first feedback is divided
Light microscopic 61, first feeds back object lens 63 and is arranged on the imageing sensor 65 of the first feedback object lens 63 focal point；From measured object 5 surface
Reflection light beam, then through reflecting mirror 3 reflect after, successively through first feedback spectroscope 61 reflect, first feedback object lens 63 saturating
Penetrate, gathered imaging by imageing sensor 65；Under conditions of measured object 5 surface is vertical with optical axis, the become point of imageing sensor 65
As in image plane center position；As shown in Figure 6, in the figure, 4 quadrant detector imaging system is eliminated.
The second, in the present embodiment, 4 quadrant detector imaging system can also select following structure: includes the second feedback
Spectroscope 62 and the 4 quadrant detector 66 being arranged on transmission-type collimating mirror 21 focal point；From the light beam of measured object 5 surface reflection,
Again through reflecting mirror 3 reflect after, successively project through transmission-type collimating mirror 21, first feedback spectroscope 61 reflect, by four-quadrant
Detector 66 gathers imaging；Under conditions of measured object 5 surface is vertical with optical axis, 4 quadrant detector 66 is become a little as in image planes
Center；As it is shown in fig. 7, in the figure, imageing sensor imaging system is eliminated.
Specific embodiment two
The present embodiment is portable combined zeroing high-precision laser big working distance autocollimation embodiment.
The portable combined zeroing high-precision laser big working distance autocollimation of the present embodiment, with specific embodiment one
Difference is to feed back the structure of imaging system 6；The structure of the present embodiment feedback imaging system 6 is in following two form
Kind:
The first, feedback imaging system 6 includes the first feedback spectroscope 61 and the imageing sensor 65 carried by guide rail 68
With 4 quadrant detector 66, as shown in Figure 8；Described guide rail 68 has two stall position, and a stall position makes image sensing
The focal position of the corresponding reflective collimating mirror 22 of device 65 image plane center, another stall position makes in 4 quadrant detector 66 image planes
The focal position of the corresponding reflective collimating mirror 22 of the heart；
The second, feedback imaging system 6 includes that the first feedback spectroscope 61, first feeds back object lens 63 and held by guide rail 68
The imageing sensor 65 carried and 4 quadrant detector 66, as shown in Figure 9；Described guide rail 68 has two stall position, and one is stopped
Position makes imageing sensor 65 image plane center be positioned at the focal position of the first feedback object lens 63, and another stall position makes four-quadrant
Limit detector 66 image plane center is positioned at the focal position of the first feedback object lens 63.
Specific embodiment three
The present embodiment is portable combined zeroing high-precision laser big working distance autocollimation embodiment.
The portable combined zeroing high-precision laser big working distance autocollimation of the present embodiment, structural representation such as Figure 10
Shown in.On the basis of specific embodiment one, the portable combined zeroing high-precision laser big working distance auto-collimation of the present embodiment
Device is additionally provided with Wavefront detecting system 7 and wavefront compensation system 8；
Described Wavefront detecting system 7 includes Wavefront detecting spectroscope 71 and air agitation wave front detector 72；Described wavefront
Detection spectroscope 71 is arranged between reflecting mirror 3 and measured object 5, and air agitation wave front detector 72 is arranged on Wavefront detecting light splitting
On the reflected light path of mirror 71, reflecting mirror deformation wave front detector 73 is arranged in the secondary reflection light path of reflecting mirror 3；
Described wavefront compensation system 8 includes compensatory light 81, compensates collimating mirror 82 and transmission liquid crystal spatial light modulation
Device 83；The light beam of compensatory light 81 outgoing, after overcompensation collimating mirror 82 is collimated into collimated light beam, then by transmission liquid crystal space
Photomodulator 83 is modulated, and incides on Wavefront detecting spectroscope 71.
Specific embodiment four
The present embodiment is portable combined zeroing high-precision laser big working distance autocollimation embodiment.
The portable combined zeroing high-precision laser big working distance autocollimation of the present embodiment, structural representation such as Figure 11
Shown in.On the basis of specific embodiment one, the portable combined zeroing high-precision laser big working distance auto-collimation of the present embodiment
Device is additionally provided with Wavefront detecting system 7 and wavefront compensation system 8；
Described Wavefront detecting system 7 includes Wavefront detecting spectroscope 71 and reflecting mirror deformation wave front detector 73；Described ripple
Front detection spectroscope 71 is arranged between reflecting mirror 3 and measured object 5, and air agitation wave front detector 72 is arranged on Wavefront detecting and divides
On the reflected light path of light microscopic 71, reflecting mirror deformation wave front detector 73 is arranged in the secondary reflection light path of reflecting mirror 3；
Described wavefront compensation system 8 includes compensatory light 81, compensates collimating mirror 82 and transmission liquid crystal spatial light modulation
Device 83；The light beam of compensatory light 81 outgoing, after overcompensation collimating mirror 82 is collimated into collimated light beam, then by transmission liquid crystal space
Photomodulator 83 is modulated, and incides on Wavefront detecting spectroscope 71.
Specific embodiment five
The present embodiment is portable combined zeroing high-precision laser big working distance autocollimation embodiment.
The portable combined zeroing high-precision laser big working distance autocollimation of the present embodiment, structural representation such as Figure 12
Shown in.On the basis of specific embodiment one, the portable combined zeroing high-precision laser big working distance auto-collimation of the present embodiment
Device is additionally provided with Wavefront detecting system 7 and wavefront compensation system 8；
Described Wavefront detecting system 7 includes Wavefront detecting spectroscope 71, air agitation wave front detector 72 and reflecting mirror shape
Become wave front detector 73；Described Wavefront detecting spectroscope 71 is arranged between reflecting mirror 3 and measured object 5, and air agitation wavefront is visited
Surveying device 72 to be arranged on the reflected light path of Wavefront detecting spectroscope 71, reflecting mirror deformation wave front detector 73 is arranged on reflecting mirror 3
Secondary reflection light path on；
Described wavefront compensation system 8 includes compensatory light 81, compensates collimating mirror 82 and transmission liquid crystal spatial light modulation
Device 83；The light beam of compensatory light 81 outgoing, after overcompensation collimating mirror 82 is collimated into collimated light beam, then by transmission liquid crystal space
Photomodulator 83 is modulated, and incides on Wavefront detecting spectroscope 71.
For above autocollimation embodiment, also following three points needs to illustrate:
The first, the first driver 411 and the second driver 412 in described angular adjustment apparatus, both can select to drive
The motor of speed or motor servo driver, can select again the piezoelectric ceramic actuator driving precision higher, also
Motor or motor servo driver can be used in mixed way with piezoelectric ceramic actuator；Those skilled in the art can basis
It is actually needed and rationally selects.
Although the second specific embodiment three, specific embodiment four and specific embodiment five, it is all at specific embodiment
Wavefront detecting system 7 and wavefront compensation system 8 are set on the basis of one, but wavefront is set on the basis of specific embodiment two
Detection system 7 and wavefront compensation system 8, also set up.Those skilled in the art can in conjunction with specific embodiments system described in
Difference between system described in specific embodiment two, arranges wavefront by these three easily on the basis of specific embodiment two
The system building of detection system 7 and wavefront compensation system 8 out, therefore no longer describes in detail herein.
3rd, in all above autocollimation embodiment, angular deflection measurement apparatus all only includes two pairs of sheet metals
With the combination of capacitance sensor, this design acquiescence reflecting mirror 3 does not the most produce translation and makes；If examined
Consider and produce translation at work to reflecting mirror 3 and affect certainty of measurement, the 3rd pair of metal can be placed in universal drive shaft 43 position
Sheet and the combination of capacitance sensor, to offset the identical translation that three capacitance sensors produce, it is ensured that certainty of measurement.
Specific embodiment six
The present embodiment is at portable combined zeroing high-precision laser big working distance auto-collimation dress described in specific embodiment one
Put the portable combined zeroing high-precision laser big working distance auto-collimation embodiment of the method for realization.
The portable combined zeroing high-precision laser big working distance auto-collimation method of the present embodiment, comprises the following steps:
Step a, some bright light source 1, imageing sensor 65 imaging, according to a picture deviation image plane center direction, utilize first to drive
Dynamic device 411 and the second driver 412 adjust reflecting mirror 3 angle, make a picture return to imageing sensor 65 image plane center region；
Step b, 4 quadrant detector 66 imaging, obtain some picture after step a terminates and deviate in 4 quadrant detector 66 image planes
Heart position Δ x and Δ y, utilizes the first driver 411 and the second driver 412 to adjust reflecting mirror 3 angle, makes a picture return to four-quadrant
Limit detector 66 image plane center position；
Step c, read the capacitance change, Δ C1 of the first capacitance sensor 423, and the electric capacity of the second capacitance sensor 424
Changes delta C2, is reconverted into angle changes delta θ 1 He of reflecting mirror 3Reflected by common light path autocollimator 429 simultaneously
Angle changes delta θ 2 He of mirror 3And then obtain angle changes delta α and the Δ β on measured object 5 surface；Wherein, Δ θ 1=f1 (Δ
C1, Δ C2),Withf1、
F2, f3, f4 represent 4 functions.
If it should be noted that the present embodiment is the method realized on device described in specific embodiment two, then
After point is as returning to imageing sensor 65 image plane center region, guide rail 68 is adjusted to another stall position from a stall position,
Make the focal position of 4 quadrant detector 66 image plane center correspondence transmission-type collimating mirror 21, then make 4 quadrant detector 66 become
Picture.
The main innovative point of the present invention is the angle adjustment measurement dress adding reflecting mirror 3 and being arranged on reflecting mirror 3
Putting 4, this structure can have bigger drift angle or there are the feelings of relatively larger transverse displacement between measured object 5 incident illumination and reflection light
Under condition, adjust 4 whole reflecting mirror attitudes by angle adjustment measurement apparatus, make reflection light backtracking and connect by feedback imaging system 6
Receive, be prevented effectively from measured object reflection light deviation measurement system and the problem that causes measuring.
But, the introducing of reflecting mirror 3, its face type error can be delivered in final result, reduces the certainty of measurement of system；With
Time, the increase of operating distance makes again the air agitation between reflecting mirror 3 and measured object 5 can not ignore, and also can reduce system
Certainty of measurement.Visible, want to realize high-acruracy survey, be necessary in view of 3 type errors of reflecting mirror and reflecting mirror 3 with tested
The air agitation impact on measurement result between thing 5, to this end, devise specific embodiment seven, specific embodiment eight and concrete
Embodiment nine.
Specific embodiment seven
The present embodiment is at portable combined zeroing high-precision laser big working distance auto-collimation dress described in specific embodiment three
Put the portable combined zeroing high-precision laser big working distance auto-collimation embodiment of the method for realization.
The portable combined zeroing high-precision laser big working distance auto-collimation method of the present embodiment, comprises the following steps:
Step a, choose surface and be perpendicular to the reference substance of optical axis direction；
Step b, some bright light source 1, be individually positioned in operating position A and nearly operating position by the reference substance selected by step a
B, air agitation wave front detector 72 respectively obtains two groups of data of GA and GB；
Step c, G1=GA-GB, obtain the wavefront variation that air agitation causes；
Step d, according to f5 (G1) adjust transmission liquid crystal spatial light modulator 83 parameter, light compensatory light 81, compensate
Air agitation；
Step e, imageing sensor 65 imaging, according to as a deviation image plane center direction, utilize the first driver 411 and the
Two drivers 412 adjust reflecting mirror 3 angle, make a picture return to imageing sensor 65 image plane center region；
Step f, 4 quadrant detector 66 imaging, obtain some picture after step a terminates and deviate in 4 quadrant detector 66 image planes
Heart position Δ x and Δ y, utilizes the first driver 411 and the second driver 412 to adjust reflecting mirror 3 angle, makes a picture return to four-quadrant
Limit detector 66 image plane center position；
Step g, read the capacitance change, Δ C1 of the first capacitance sensor 423, and the electric capacity of the second capacitance sensor 424
Changes delta C2, is reconverted into angle changes delta θ 1 He of reflecting mirror 3Reflected by common light path autocollimator 429 simultaneously
Angle changes delta θ 2 He of mirror 3And then obtain angle changes delta α and the Δ β on measured object 5 surface；Wherein, Δ θ 1=f1 (Δ
C1, Δ C2),Withf1、
F2, f3, f4 represent 4 functions.
The method implementing the present embodiment on the device of specific embodiment three, it is possible to utilize air agitation wave front detector 72
Air agitation is separated, and then utilizes wavefront compensation system 8 that air agitation is compensated, finally realize without air agitation
The high-acruracy survey of impact.
Specific embodiment eight
The present embodiment is at portable combined zeroing high-precision laser big working distance auto-collimation dress described in specific embodiment four
Put the portable combined zeroing high-precision laser big working distance auto-collimation embodiment of the method for realization.
The portable combined zeroing high-precision laser big working distance auto-collimation method of the present embodiment, comprises the following steps:
Step a, choose surface and be perpendicular to the reference substance of optical axis direction；
Step b, some bright light source 1, be individually positioned in operating position A and nearly operating position by the reference substance selected by step a
B, reflecting mirror deformation wave front detector 73 respectively obtains two groups of data of GC and GD；
Step c, G2=GC-GD, obtain air agitation and wavefront variation that reflecting mirror deformation causes jointly；
Step d, according to f5 (G2) adjust transmission liquid crystal spatial light modulator 83 parameter, light compensatory light 81, compensate
Air agitation and reflecting mirror deformation；
Step e, imageing sensor 65 imaging, according to as a deviation image plane center direction, utilize the first driver 411 and the
Two drivers 412 adjust reflecting mirror 3 angle, make a picture return to imageing sensor 65 image plane center region；
Step f, 4 quadrant detector 66 imaging, obtain some picture after step a terminates and deviate in 4 quadrant detector 66 image planes
Heart position Δ x and Δ y, utilizes the first driver 411 and the second driver 412 to adjust reflecting mirror 3 angle, makes a picture return to four-quadrant
Limit detector 66 image plane center position；
Step g, read the capacitance change, Δ C1 of the first capacitance sensor 423, and the electric capacity of the second capacitance sensor 424
Changes delta C2, is reconverted into angle changes delta θ 1 He of reflecting mirror 3Obtained instead by common light path autocollimator 429 simultaneously
Penetrate angle changes delta θ 2 He of mirror 3And then obtain angle changes delta α and the Δ β on measured object 5 surface；Wherein, Δ θ 1=f1
(Δ C1, Δ C2),With
F1, f2, f3, f4 represent 4 functions.
The method implementing the present embodiment on the device of specific embodiment four, it is possible to utilize reflecting mirror deformation wave front detector
Air agitation and reflecting mirror deformation are carried out overall separation by 73, and then utilize wavefront compensation system 8 to air agitation and reflecting mirror
Deformation carries out entire compensation, finally realizes without air agitation and the high-acruracy survey of reflecting mirror influence of crust deformation.
Specific embodiment nine
The present embodiment is at portable combined zeroing high-precision laser big working distance auto-collimation dress described in specific embodiment five
Put the portable combined zeroing high-precision laser big working distance auto-collimation embodiment of the method for realization.
The portable combined zeroing high-precision laser big working distance auto-collimation method of the present embodiment, comprises the following steps:
Step a, choose surface and be perpendicular to the reference substance of optical axis direction；
Step b, some bright light source 1, be individually positioned in operating position A and nearly operating position by the reference substance selected by step a
B, air agitation wave front detector 72 respectively obtains two groups of data of GA and GB, and reflecting mirror deformation wave front detector 73 respectively obtains GC
With two groups of data of GD；
Step c, G1=GA-GB, obtain the wavefront variation that air agitation causes；G2=GC-GD, obtains air agitation with anti-
Penetrate the wavefront variation that mirror deformation causes jointly；G=G2-G1, obtains the wavefront variation that reflecting mirror deformation causes；
Step d,
Adjusting transmission liquid crystal spatial light modulator 83 parameter according to f5 (G1), light compensatory light 81, make-up air is disturbed
Dynamic；
Or
Adjusting transmission liquid crystal spatial light modulator 83 parameter according to f5 (G2), light compensatory light 81, make-up air is disturbed
Move and reflecting mirror deformation；
Or
Adjust transmission liquid crystal spatial light modulator 83 parameter according to f5 (G), light compensatory light 81, compensatory reflex mirror shape
Become；
Step e, imageing sensor 65 imaging, according to as a deviation image plane center direction, utilize the first driver 411 and the
Two drivers 412 adjust reflecting mirror 3 angle, make a picture return to imageing sensor 65 image plane center region；
Step f, 4 quadrant detector 66 imaging, obtain some picture after step a terminates and deviate in 4 quadrant detector 66 image planes
Heart position Δ x and Δ y, utilizes the first driver 411 and the second driver 412 to adjust reflecting mirror 3 angle, makes a picture return to four-quadrant
Limit detector 66 image plane center position；
Step g, read the capacitance change, Δ C1 of the first capacitance sensor 423, and the electric capacity of the second capacitance sensor 424
Changes delta C2, is reconverted into angle changes delta θ 1 He of reflecting mirror 3Reflected by common light path autocollimator 429 simultaneously
Angle changes delta θ 2 He of mirror 3And then obtain angle changes delta α and the Δ β on measured object 5 surface；Wherein, Δ θ 1=f1 (Δ
C1, Δ C2),Withf1、
F2, f3, f4 represent 4 functions.
The method implementing the present embodiment on the device of specific embodiment five, it is possible to utilize air agitation wave front detector 72
With reflecting mirror deformation wave front detector 73, air agitation and reflecting mirror deformation are separately separated, and then optionally to air
Disturbance carries out separate compensation, reflecting mirror deformation carries out separate compensation or air agitation and reflecting mirror deformation carry out overall benefit
Repay, final realize without air agitation or no-mirror deformation or the high accuracy survey without air agitation and reflecting mirror influence of crust deformation
Amount.
The present embodiment has an advantage that, that is, after air agitation and reflecting mirror deformation being separately separated, can be to each
The size that affects of result is individually assessed by part, can not only find out in air agitation and reflecting mirror deformation, and who is impact
The principal contradiction of certainty of measurement, and mirror deformation individually can be assessed, reflecting mirror crudy is carried out simultaneously
Effective evaluation.
If also, it should be noted specific embodiment three, specific embodiment four and specific embodiment five are based on tool
Body embodiment two and the device built, then in specific embodiment seven, specific embodiment eight and specific embodiment nine,
After point is as returning to imageing sensor 65 image plane center region, guide rail 68 is adjusted to another stall position from a stall position,
Make the focal position of 4 quadrant detector 66 image plane center correspondence transmission-type collimating mirror 21, then make 4 quadrant detector 66 become
Picture.
Claims (6)
1. portable combined zeroing high-precision laser big working distance autocollimation, it is characterised in that include light source (1), reflection
Formula collimating mirror (22), reflecting mirror (3) and feedback imaging system (6), described reflecting mirror (3) is provided with angle adjustment and measures
Device (4)；The light beam of light source (1) outgoing, after reflective collimating mirror (22) is collimated into collimated light beam, then by reflecting mirror (3)
Reflection, incides the surface of measured object (5)；From the light beam of measured object (5) surface reflection, then after reflecting mirror (3) reflects, by
Feedback imaging system (6) gathers imaging；
Described feedback imaging system (6) is in following two form:
The first, feedback imaging system (6) includes imageing sensor imaging system and 4 quadrant detector imaging system；
Described imageing sensor imaging system includes the first feedback spectroscope (61) and is arranged on reflective collimating mirror (22) focus
The imageing sensor (65) at place；From the light beam of measured object (5) surface reflection, then after reflecting mirror (3) reflects, successively through anti-
Penetrate formula collimating mirror (22) projection, the first feedback spectroscope (61) reflection, gathered imaging by imageing sensor (65)；At measured object
(5), under conditions of surface is vertical with optical axis, imageing sensor (65) is become a little as in image plane center position；
Or
Described imageing sensor imaging system includes the first feedback spectroscope (61), the first feedback object lens (63) and is arranged on first
The imageing sensor (65) of feedback object lens (63) focal point；From the light beam of measured object (5) surface reflection, then through reflecting mirror (3)
After reflection, successively through first feedback spectroscope (61) reflection, first feedback object lens (63) transmission, adopted by imageing sensor (65)
Collection imaging；Under conditions of measured object (5) surface is vertical with optical axis, imageing sensor (65) is become a little as in image plane center position
Put；
Described 4 quadrant detector imaging system includes the second feedback spectroscope (62) and is arranged on reflective collimating mirror (22) Jiao
4 quadrant detector (66) at Dian；From the light beam of measured object (5) surface reflection, then after reflecting mirror (3) reflects, warp after elder generation
Cross reflective collimating mirror (22) projection, the first feedback spectroscope (61) reflection, gathered imaging by 4 quadrant detector (66)；At quilt
Under conditions of survey thing (5) surface is vertical with optical axis, 4 quadrant detector (66) is become a little as in image plane center position；
Or
Described 4 quadrant detector imaging system includes the second feedback spectroscope (62), the second feedback object lens (64) and is arranged on the
The 4 quadrant detector (66) of two feedback object lens (64) focal point；From the light beam of measured object (5) surface reflection, then through reflecting mirror
(3) reflection after, successively through second feedback spectroscope (62) reflection, second feedback object lens (64) transmission, by 4 quadrant detector
(66) imaging is gathered；Under conditions of measured object (5) surface is vertical with optical axis, 4 quadrant detector (66) is become a little as in image planes
Center；
The second, feedback imaging system (6) includes the first feedback spectroscope (61) and the imageing sensor carried by guide rail (68)
(65) and 4 quadrant detector (66), described guide rail (68) has two stall position, and a stall position makes imageing sensor
(65) focal position of the corresponding reflective collimating mirror of image plane center (22), another stall position make 4 quadrant detector (66) as
The focal position of the corresponding reflective collimating mirror (22) in center, face；
Or
Feedback imaging system (6) includes the first feedback spectroscope (61), the first feedback object lens (63) and is carried by guide rail (68)
Imageing sensor (65) and 4 quadrant detector (66), described guide rail (68) has two stall position, a stall position
Making imageing sensor (65) image plane center be positioned at the focal position of the first feedback object lens (63), another stall position makes four-quadrant
Detector (66) image plane center is positioned at the focal position of the first feedback object lens (63)；
Described angle adjustment measurement apparatus (4) includes that dress is measured in the angular adjustment apparatus being arranged on reflecting mirror (3), angular deflection
Putting and universal drive shaft (43), angular adjustment apparatus includes the first driver (411) and the second driver (412)；Angular deflection is surveyed
Amount device includes that the first sheet metal (421), the second sheet metal (422), the first electric capacity of corresponding first sheet metal (421) position pass
Second capacitance sensor (424) of sensor (423) and corresponding second sheet metal (422) position；First driver (411),
One sheet metal (421) and universal drive shaft (43) point-blank, the second driver (412), the second sheet metal (422) and
Universal drive shaft (43) point-blank, and the first driver (411) second driver vertical with the line of universal drive shaft (43)
(412) with the line of universal drive shaft (43)；Angular deflection measurement apparatus also includes common light path autocollimator (429).
Portable combined the most according to claim 1 zeroing high-precision laser big working distance autocollimation, its feature exists
In, also include Wavefront detecting system (7) and wavefront compensation system (8)；
Described Wavefront detecting system (7) includes Wavefront detecting spectroscope (71) and air agitation wave front detector (72) and anti-
Penetrate at least one in mirror deformation wave front detector (73)；Described Wavefront detecting spectroscope (71) is arranged on reflecting mirror (3) and quilt
Surveying between thing (5), air agitation wave front detector (72) is arranged on the reflected light path of Wavefront detecting spectroscope (71), reflecting mirror
Deformation wave front detector (73) is arranged in the secondary reflection light path of reflecting mirror (3)；
Described wavefront compensation system (8) includes compensatory light (81), compensates collimating mirror (82) and transmission liquid crystal spatial light tune
Device processed (83)；The light beam of compensatory light (81) outgoing, after overcompensation collimating mirror (82) is collimated into collimated light beam, then by transmission-type
LCD space light modulator (83) is modulated, and incides on Wavefront detecting spectroscope (71).
3. realize on portable portable combined zeroing high-precision laser big working distance autocollimation described in claim 1
Portable portable combined zeroing high-precision laser big working distance auto-collimation method, it is characterised in that comprise the following steps:
Step a, some bright light source (1), imageing sensor (65) imaging, according to a picture deviation image plane center direction, utilize first to drive
Dynamic device (411) and the second driver (412) adjust reflecting mirror (3) angle, make a picture return to imageing sensor (65) image plane center
Region；
Step b, 4 quadrant detector (66) imaging, obtain some picture after step a terminates and deviate in 4 quadrant detector (66) image planes
Heart position Δ x and Δ y, utilizes the first driver (411) and the second driver (412) to adjust reflecting mirror (3) angle, makes a picture return
To 4 quadrant detector (66) image plane center position；
Step c, read the capacitance change, Δ C1 of the first capacitance sensor (423), and the electric capacity of the second capacitance sensor (424) becomes
Change Δ C2, be reconverted into angle changes delta θ 1 He of reflecting mirror (3)Obtained instead by common light path autocollimator (429) simultaneously
Penetrate angle changes delta θ 2 He of mirror (3)And then obtain angle changes delta α and the Δ β on measured object (5) surface；Wherein, Δ θ 1=
F1 (Δ C1, Δ C2),With
F1, f2, f3, f4 represent 4 functions.
4. realize on portable portable combined zeroing high-precision laser big working distance autocollimation described in claim 2
Portable portable combined zeroing high-precision laser big working distance auto-collimation method, it is desirable to Wavefront detecting system (7) only includes ripple
Front detection spectroscope (71) and air agitation wave front detector (72)；
It is characterized in that, comprise the following steps:
Step a, choose surface and be perpendicular to the reference substance of optical axis direction；
Step b, some bright light source (1), be individually positioned in operating position A and nearly operating position B by the reference substance selected by step a,
Air agitation wave front detector (72) respectively obtains two groups of data of GA and GB；
Step c, G1=GA-GB, obtain the wavefront variation that air agitation causes；
Step d, according to f5 (G1) adjust transmission liquid crystal spatial light modulator (83) parameter, light compensatory light (81), compensate
Air agitation；
Step e, imageing sensor (65) imaging, according to as a deviation image plane center direction, utilize the first driver (411) and the
Two drivers (412) adjust reflecting mirror (3) angle, make a picture return to imageing sensor (65) image plane center region；
Step f, 4 quadrant detector (66) imaging, obtain some picture after step a terminates and deviate in 4 quadrant detector (66) image planes
Heart position Δ x and Δ y, utilizes the first driver (411) and the second driver (412) to adjust reflecting mirror (3) angle, makes a picture return
To 4 quadrant detector (66) image plane center position；
Step g, read the capacitance change, Δ C1 of the first capacitance sensor (423), and the electric capacity of the second capacitance sensor (424) becomes
Change Δ C2, be reconverted into angle changes delta θ 1 He of reflecting mirror (3)Reflected by common light path autocollimator (429) simultaneously
Angle changes delta θ 2 He of mirror (3)And then obtain angle changes delta α and the Δ β on measured object (5) surface；Wherein, Δ θ 1=f1
(Δ C1, Δ C2),With
F1, f2, f3, f4 represent 4 functions.
5. realize on portable portable combined zeroing high-precision laser big working distance autocollimation described in claim 2
Portable portable combined zeroing high-precision laser big working distance auto-collimation method, it is desirable to Wavefront detecting system (7) only includes ripple
Front detection spectroscope (71) and reflecting mirror deformation wave front detector (73)；
It is characterized in that, comprise the following steps:
Step a, choose surface and be perpendicular to the reference substance of optical axis direction；
Step b, some bright light source (1), be individually positioned in operating position A and nearly operating position B by the reference substance selected by step a,
Reflecting mirror deformation wave front detector (73) respectively obtains two groups of data of GC and GD；
Step c, G2=GC-GD, obtain air agitation and wavefront variation that reflecting mirror deformation causes jointly；
Step d, according to f5 (G2) adjust transmission liquid crystal spatial light modulator (83) parameter, light compensatory light (81), compensate
Air agitation and reflecting mirror deformation；
Step e, imageing sensor (65) imaging, according to as a deviation image plane center direction, utilize the first driver (411) and the
Two drivers (412) adjust reflecting mirror (3) angle, make a picture return to imageing sensor (65) image plane center region；
Step f, 4 quadrant detector (66) imaging, obtain some picture after step a terminates and deviate in 4 quadrant detector (66) image planes
Heart position Δ x and Δ y, utilizes the first driver (411) and the second driver (412) to adjust reflecting mirror (3) angle, makes a picture return
To 4 quadrant detector (66) image plane center position；
Step g, read the capacitance change, Δ C1 of the first capacitance sensor (423), and the electric capacity of the second capacitance sensor (424)
Changes delta C2, is reconverted into angle changes delta θ 1 He of reflecting mirror (3)Obtained by common light path autocollimator (429) simultaneously
Angle changes delta θ 2 He of reflecting mirror (3)And then obtain angle changes delta α and the Δ β on measured object (5) surface；Wherein, Δ θ
1=f1 (Δ C1, Δ C2),With
F1, f2, f3, f4 represent 4 functions.
6. realize on portable portable combined zeroing high-precision laser big working distance autocollimation described in claim 2
Portable portable combined zeroing high-precision laser big working distance auto-collimation method, it is desirable to Wavefront detecting system (7) includes simultaneously
Wavefront detecting spectroscope (71), air agitation wave front detector (72) and reflecting mirror deformation wave front detector (73)；
It is characterized in that, comprise the following steps:
Step a, choose surface and be perpendicular to the reference substance of optical axis direction；
Step b, some bright light source (1), be individually positioned in operating position A and nearly operating position B by the reference substance selected by step a,
Air agitation wave front detector (72) respectively obtains two groups of data of GA and GB, and reflecting mirror deformation wave front detector (73) respectively obtains
Two groups of data of GC and GD；
Step c, G1=GA-GB, obtain the wavefront variation that air agitation causes；G2=GC-GD, obtains air agitation and reflecting mirror
The wavefront variation that deformation causes jointly；G=G2-G1, obtains the wavefront variation that reflecting mirror deformation causes；
Step d,
Adjusting transmission liquid crystal spatial light modulator (83) parameter according to f5 (G1), light compensatory light (81), make-up air is disturbed
Dynamic；
Or
Adjusting transmission liquid crystal spatial light modulator (83) parameter according to f5 (G2), light compensatory light (81), make-up air is disturbed
Move and reflecting mirror deformation；
Or
Adjust transmission liquid crystal spatial light modulator (83) parameter according to f5 (G), light compensatory light (81), compensatory reflex mirror shape
Become；
Step e, imageing sensor (65) imaging, according to as a deviation image plane center direction, utilize the first driver (411) and the
Two drivers (412) adjust reflecting mirror (3) angle, make a picture return to imageing sensor (65) image plane center region；
Step f, 4 quadrant detector (66) imaging, obtain some picture after step a terminates and deviate in 4 quadrant detector (66) image planes
Heart position Δ x and Δ y, utilizes the first driver (411) and the second driver (412) to adjust reflecting mirror (3) angle, makes a picture return
To 4 quadrant detector (66) image plane center position；
Step g, read the capacitance change, Δ C1 of the first capacitance sensor (423), and the electric capacity of the second capacitance sensor (424) becomes
Change Δ C2, be reconverted into angle changes delta θ 1 He of reflecting mirror (3)Obtained instead by common light path autocollimator (429) simultaneously
Penetrate angle changes delta θ 2 He of mirror (3)And then obtain angle changes delta α and the Δ β on measured object (5) surface；Wherein, Δ θ 1=
F1 (Δ C1, Δ C2),With
F1, f2, f3, f4 represent 4 functions.
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| CN113639665A (en) * | 2021-07-30 | 2021-11-12 | 哈尔滨工业大学 | High-stability nanoradian magnitude angle measurement method and device based on drift amount feedback |
| CN113639666A (en) * | 2021-07-30 | 2021-11-12 | 哈尔滨工业大学 | High-stability nanoradian magnitude angle measurement method and device based on spatial light modulation |
| CN113686265A (en) * | 2021-07-30 | 2021-11-23 | 哈尔滨工业大学 | High-stability nanoradian magnitude angle measurement method and device based on deformable mirror compensation |
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