CN110146257A - A kind of device and method of rapid survey space laser load optical axis variation - Google Patents
A kind of device and method of rapid survey space laser load optical axis variation Download PDFInfo
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- CN110146257A CN110146257A CN201910411854.1A CN201910411854A CN110146257A CN 110146257 A CN110146257 A CN 110146257A CN 201910411854 A CN201910411854 A CN 201910411854A CN 110146257 A CN110146257 A CN 110146257A
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- 230000005540 biological transmission Effects 0.000 claims abstract description 12
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- 239000000835 fiber Substances 0.000 claims description 21
- 238000003384 imaging method Methods 0.000 claims description 9
- 239000006096 absorbing agent Substances 0.000 claims description 8
- 238000005259 measurement Methods 0.000 claims description 4
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Classifications
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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
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
- G01M11/0207—Details of measuring devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
- G01M11/0242—Testing optical properties by measuring geometrical properties or aberrations
- G01M11/0257—Testing optical properties by measuring geometrical properties or aberrations by analyzing the image formed by the object to be tested
- G01M11/0264—Testing optical properties by measuring geometrical properties or aberrations by analyzing the image formed by the object to be tested by using targets or reference patterns
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- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The present invention discloses a kind of device and method of rapid survey space laser load optical axis variation, auto-collimation function of the invention based on prism of corner cube, incident collimated light is divided into two beam collimated lights, wherein transmission road collimated light reaches prism of corner cube revolution 180 degree after transmission and again passes by Amici prism reflection outgoing, transmission road is transmitted in off-axis parallel light tube post-concentration CCD camera by Amici prism, is initial origin；Reflex circuit collimated light is reflected by Amici prism into second Amici prism, then it is entered in test macro by second Amici prism reflex circuit, again passes by the second Amici prism after returning after second Amici prism transmits road using prism of corner cube and be reflected into another system (two light beams are pointed into two sides at 180 degree respectively).The system can be with rapid survey satellite storehouse plate deformation.Apparatus of the present invention structure is simple, operating method is simple.
Description
Technical field
The present invention relates to a kind of device and methods of rapid survey space laser load optical axis variation, are suitable for test satellite
Storehouse plate deformation, high-precision optical axis monitoring, is also applied for being directed at the fields such as demanding datum plane relational system.
Background technique
In the new era of aerospace industry fast development, satellite is at indispensable carrying tool, China's transmitting in 2018
200 multi-satellites, the quantity with transmitting satellite constantly increase.New space flight thinking, civilian boat are constantly proposed in country
It is also that aerospace industry is constantly done one's bit at new main force.Requirement along with the rapid development of aerospace industry, to satellite
It is higher and higher, then there will be higher requirement in the precision of measurement method and speed.For satellite, the deformation of storehouse plate is very
Important index, conventional method are tested the deformation of the storehouse plate of satellite using card theodolite alignment methods are come, are then surveyed
Measure block prism Azimuth testing.This patent provides a kind of accuracy method of rapid survey satellite storehouse plate deformation, provides absolutely flat
Capable and at 180 degree two-beam spot carries out two block prism calibration.This device uses visible light source, can quickly carry out
Skimming reading is quasi-, is then tested using high-precision CCD camera detector.
The raising with the requirement to resolution ratio is required during space flight, has become generally acknowledged to become using heavy caliber
Gesture, optical axis registration is one of the key technical index of system, the variation of optical axis during the dress school of bigbore system
The detection for the system that directly influences is horizontal, it, can energy band when testing at this time as the volume of the increase system of bore is big, heavy
Carry out the variation of optical axis registration, especially all high coaxial precision is asked with polarization information load, imaging load and ranging load
Inscribe especially prominent, this patent can provide a visible collimated light to carry out optical axis registration, and optical axis feelings can be monitored in real time
Condition, to provide practical feasibility scheme on optical axis registration.
Summary of the invention
The object of the present invention is to provide a kind of device and method of rapid survey space laser load optical axis variation, the inventions
The use of device, can satisfy auxiliary dress school and the real-time monitoring of high-precision alignment, while can also carry out satellite plane base
The dress school of quasi- mirror and measurement etc..The characteristics of invention is mainly reflected in: 1) structure is simple, low in cost；2) adjusting side of the invention
Method is simple, establishes the two-beam for being mutually 180 degree using the interaction of Amici prism and prism of corner cube；3) present invention can be auxiliary
It helps to establish the optical axis of VISIBLE LIGHT SYSTEM and provides the function that rapid survey cuts real-time measurement with adjustment.
Apparatus of the present invention are as shown in Fig. 1, and the course of work of the device is as follows:
Single mode fiber laser 1 emits free laser and emits in the focal point of collimating mirror 2, collimates by collimating mirror 2 laggard
Enter two beams that No.1 Amici prism (3) is divided into 50:50, wherein beam of laser is inhaled through No.1 Amici prism (3) by absorber of light 4
It receives.In addition light beam is reflected into the two-beam that No. two Amici prisms 5 are divided into 50:50 through No.1 Amici prism 3, and reflected light is passed through
Enter in system after attenuator 7.Transmitted light enters prism of corner cube 6 and turns round 180 degree outgoing, anti-using No. two Amici prisms 5
It penetrates and enters in another system.Enter after prism of corner cube 6 turns round 180 degree through No. two Amici prisms 5 and No.1 Amici prism 3
Off-axis parallel light tube 8 is assembled in CCD camera 9, and self-test hot spot is formed.Initially to calibrate hot spot.The system adjusted is put into
In system under test (SUT) 10, system under test (SUT) 10 is made of mounting plate 10-1, reference mirror 10-2, reference mirror 10-3.When measurement, first by base
Quasi- mirror 10-3 reflected light is modulated to self-test facula position, then reads reference mirror 10-2 and returns to the facula mass center of coming, passes through reading
The half of the center-of-mass coordinate difference DELTA of two hot spots, the ratio with the focal length f of selected off-axis parallel light tube 8 are the same of optical axis
Axis precision δ.Formula indicates are as follows:
δ=Δ/2f
Unit is urad
A kind of high-precision schematic device of rapid survey satellite storehouse plate deformation of the invention is as shown in Figure 1, its feature exists
It is as follows in method and step:
1) single mode fiber laser 1 and 2 relationship of collimating mirror are adjusted: introducing laser using one end of single mode fiber laser 1
It is collimated by collimating mirror 2, collimated light enters parallel light tube after the reflection of No.1 Amici prism 3 and on focal plane laser beam analyzer
Imaging, by adjusting the beam projecting end face of single mode fiber laser 1 and the relative position of collimating mirror 2, so that collimated light is in light
Imaging point is minimum on beam analysis instrument, and single mode fiber laser 1 and collimating mirror 2 are fixed as a generally collimated light group, completed
The adjusting of collimating mirror 2 and single mode fiber laser 1.
2) off-axis parallel light tube 8 is adjusted with CCD camera 9: required wavelength being fixed to parallel light tube focal point first, flat
Collimated light beam is issued before row light pipe, off-axis parallel light tube 8 is tentatively fixed in benchmark tooling with CCD camera 9, adjusts CCD phase
Machine 9 arrives off-axis 8 relative position of parallel light tube, so that hot spot imaging point minimum position, then by off-axis parallel light tube 8 and CCD phase
Machine 9 is fixed as an entirety, completes the adjusting of off-axis parallel light tube 8 and CCD camera 9.
3) collimated light group and CCD camera group are adjusted: firstly, fixing after two collimated light groups are mutually collimated, then
No.1 Amici prism 3 is placed among two collimated light groups, before being then placed in parallel light tube together, the first collimated light group is passed through
No.1 Amici prism 3 is reflected into parallel light tube, and the exit direction after the reflection of the second collimated light group on opposite places pyramid rib
Mirror 6 enters the light entered in parallel light tube after prism of corner cube 6, then adjusts the direction of rotation of No.1 Amici prism 3,
The point for making two beam collimated lights be driven into parallel light tube is overlapped in focus, and fixed No.1 Amici prism 3, then by prism of corner cube 6
It is replaced with CCD camera group, adjusts CCD camera group, make detector center and fixation of the hot spot in CCD camera group, then take
Under be reflected into CCD camera group collimated light group change at absorber of light 4.Complete the adjusting of collimated light group and CCD camera group.
4) increase No. two Amici prisms 5 before the No.1 Amici prism 3 of the collimated light group and CCD camera group that fix, and
A prism of corner cube 6 is set respectively on transmission road and reflex circuit opposite, and the prism of corner cube 6 for transmiting road is fixed, adjust No. two points
Light prism 5 makes then again passing by another pyramid by No. two reflections of Amici prism 5 by being transmitted into prism of corner cube 6
6 backtracking of prism behind CCD camera group detector center, fixes No. two Amici prisms 5 to CCD camera group hot spot.It is at this time
System equipment modulation finishes.
5) decaying multiplying power confirmation: first via laser is reflected by No.1 Amici prism 3 first, and energy is basic energy
It 0.5 times, is reflected subsequently into No. two Amici prisms 5,0.25 times of outgoing outgoing that system capacity is basic energy is entered after reflection；
Another way laser is reflected by No.1 Amici prism 3, and energy is 0.5 times of basic energy, then saturating by No. two Amici prisms 5
It penetrates, energy is 0.25 times of basic energy and is emitted to prism of corner cube 6 after transmission, is reflected into No. two light splitting again through prism of corner cube 6
Prism 5 is being reflected into 0.125 times of outgoing that system capacity is basic energy through No. two Amici prisms 5.For equilibrium energy,
0.5 times of attenuator 7 of addition of the first via, i.e. energy are also 0.125 times of outgoing of basic energy.
The invention feature of apparatus of the present invention is mainly reflected in:
1) structure is simple, low in cost；
2) present invention establishes two beams for being mutually absolute 180 degree using the interaction of Amici prism and prism of corner cube
Light, to complete two-way transmitting effect.
3) present invention can assist storehouse plate deformation test to satellite platform, the optical axis of VISIBLE LIGHT SYSTEM can also be established with
Adjustment provides the function etc. of rapid survey and real-time monitoring.
Detailed description of the invention
Fig. 1 is a kind of high-precision device light path schematic diagram of rapid survey satellite storehouse plate deformation.
Fig. 2 is that collimated light group and optical axis adjust schematic diagram
Fig. 3 is that collimated light group and CCD camera group adjust schematic diagram
Specific embodiment
It is described in detail below in conjunction with embodiment of the attached drawing to the method for the present invention.
Main devices employed in the present invention are described as follows:
1) single mode fiber laser 1: using Changchun Xin Chenye Photoelectric Technology Co., Ltd. 671nm single mode fiber laser,
Its Specifeca tion speeification: service band is 671 ± 10nm；Continuous light output, out light energy 50mw, energy stability < 5%.
2) collimating mirror 2: use Thorlabs company model for the collimating mirror of AL2520-B, Specifeca tion speeification: work
Wave band is 650-1050nm；Focal length is 20mm, clear aperture 25mm；Transmission material is ECO550；
3) No.1 Amici prism 3 and No. two Amici prisms 5: use Thorlabs company model for unpolarized point of BS007
Light prism, Specifeca tion speeification: service band 700-1100nm；Splitting ratio is 1:1, clear aperture 25mm；
4) absorber of light 4: customization, using perovskite material, depth 20mm, bore 25.4mm
5) prism of corner cube 6: use Thorlabs company model for the prism of corner cube of PS971, Specifeca tion speeification: light transmission
Face surface face type is better than the@of λ/10 632.8nm；Rotating accuracy is less than 3 ", clear aperture 25.4mm；
6) attenuator 7: using the constant density optical filter for Chinese light of standing upright, model NDF12505-A.Its main performance ginseng
Number: being Φ 25.4mm by bore, and decaying multiplying power is 0.5 times, and face type is better than the@of λ/20 632.8nm；
7) off-axis parallel light tube 8: customization, Specifeca tion speeification: bore 100mm, transmission material K9.
7) CCD camera: 9: using U.S.'s Spiricon company model for the laser beam analyzer of SP620, main performance ginseng
Number: service band 190nm-1100nm, pixel size 4.4um*4.4um, number of pixels 1600*1200；
A kind of high-precision schematic device of rapid survey satellite storehouse plate deformation of the invention is as shown in Figure 1, the present invention fills
It sets and can be adapted for testing satellite storehouse plate deformation (test of plane block prism benchmark relation), auxiliary high-precision optical axis establishes test
And optical axis monitoring, it is also applied for being directed at the fields such as demanding datum plane relational system.Step must be embodied in the inventive method
It is rapid as follows:
1. single mode fiber laser 1 and 2 relationship of collimating mirror are adjusted: introducing laser using one end of single mode fiber laser 1
It is collimated by collimating mirror 2, collimated light enters parallel light tube after the reflection of No.1 Amici prism 3 and on focal plane laser beam analyzer
Imaging, by adjusting the fiber exit end face of single mode fiber laser 1 and the relative position of collimating mirror 2, so that collimated light is in light
Imaging point is minimum on beam analysis instrument, and single mode fiber laser 1 and collimating mirror 2 are fixed as a generally collimated light group, completed
The adjusting of collimating mirror 2 and single mode fiber laser 1.
2. off-axis parallel light tube 8 is adjusted with CCD camera 9: required wavelength being fixed to parallel light tube focal point first, flat
Collimated light beam is issued before row light pipe, off-axis parallel light tube 8 is tentatively fixed in benchmark tooling with CCD camera 9, adjusts CCD phase
Machine 9 arrives off-axis 8 relative position of parallel light tube, so that hot spot imaging point minimum position, then by off-axis parallel light tube 8 and CCD phase
Machine 9 is fixed as an entirety, completes the adjusting of off-axis parallel light tube 8 and CCD camera 9.
3. collimated light group and CCD camera group are adjusted: firstly, fixed after two collimated light groups are mutually collimated complete, so
No.1 Amici prism 3 is placed among two collimated light groups afterwards, before being then placed in parallel light tube together, the first collimated light group warp
It crosses No.1 Amici prism (3) and is reflected into parallel light tube, the exit direction after the reflection of the second collimated light group on opposite places angle
Cone prism 6 enters the light entered in parallel light tube after prism of corner cube 6, then adjusts the rotation side of No.1 Amici prism 3
To making two beam collimated lights be driven into the point of parallel light tube and be overlapped in focus, and fixed No.1 Amici prism 3, at this time by pyramid
Prism 6 is replaced with CCD camera group, is adjusted CCD camera group, is made detector center and fixation of the hot spot in CCD camera group, so
The collimated light group change for being reflected into CCD camera group is removed afterwards into absorber of light 4.Complete the tune of collimated light group and CCD camera group
Section.
4. increase No. two Amici prisms 5 before the No.1 Amici prism 3 of the collimated light group and CCD camera group that fix, and
A prism of corner cube 6 is set respectively on transmission road and reflex circuit opposite, and the prism of corner cube 6 for transmiting road is fixed, adjust No. two points
Light prism 5 makes then again passing by another pyramid by No. two reflections of Amici prism 5 by being transmitted into prism of corner cube 6
6 backtracking of prism behind CCD camera group detector center, fixes No. two Amici prisms 5 to CCD camera group hot spot.It is at this time
System equipment modulation finishes.
5. the multiplying power that decays confirmation: first via laser is reflected by No.1 Amici prism 3 first, and energy is basic energy
It 0.5 times, is reflected subsequently into No. two Amici prisms 5,0.25 times of outgoing outgoing that system capacity is basic energy is entered after reflection；
Another way laser is reflected by No.1 Amici prism 3, and energy is 0.5 times of basic energy, then saturating by No. two Amici prisms 5
It penetrates, energy is 0.25 times of basic energy and is emitted to prism of corner cube 6 after transmission, is reflected into No. two light splitting again through prism of corner cube 6
Prism 5 is emitted being reflected into 0.125 times of outgoing that system capacity is basic energy through No. two Amici prisms 5.To balance energy
Amount, in 0.5 times of attenuator 7 of addition of the first via, i.e. energy 0.125 times of outgoing being also basic energy.
Claims (9)
1. a kind of device of rapid survey space laser load optical axis variation, including single mode fiber laser (1), collimating mirror (2),
No.1 Amici prism (3), absorber of light (4), No. two Amici prisms (5), prism of corner cube (6), attenuator (7), off-axis directional light
Manage (8), CCD camera (9) and system under test (SUT) (10), it is characterised in that:
The single mode fiber laser (1) emits free laser and emits in the focal point of collimating mirror (2), by collimating mirror (2)
Enter the uniform light that No.1 Amici prism (3) are divided into two beam 50:50 after collimation, wherein beam of laser penetrates No.1 Amici prism
(3) it is absorbed by absorber of light (4)；In addition light beam is reflected into No. two Amici prisms (5) in this point through No.1 Amici prism (3)
For the uniform light of 50:50, No. two Amici prisms (5) enter in system after attenuator (7) by reflecting；No. two Amici prisms
(5) it by being transmitted into prism of corner cube (6) revolution 180 degree outgoing, is reflected into using No. two Amici prisms (5) another
In system；Enter off-axis put down through No. two Amici prisms (5) and No.1 Amici prism (3) after prism of corner cube (6) turn round 180 degree
Row light pipe (8) converges in CCD camera (9), forms self-test hot spot, for initial calibration hot spot；The system adjusted is put into
In system under test (SUT) (10), system under test (SUT) (10) is made of mounting plate (10-1), reference mirror (10-2), reference mirror (10-3)；Measurement
When, reference mirror (10-3) reflected light is modulated to self-test facula position first, reference mirror (10-2) is then read and returns to the light of coming
Spot mass center, the half of the center-of-mass coordinate difference DELTA by reading two hot spots, and divided by the coke of selected off-axis parallel light tube (8)
Ratio away from f, the coaxial precision δ of optical axis are as follows:
δ=Δ/2f
Unit is urad.
2. a kind of device of rapid survey space laser load optical axis variation according to claim 1, it is characterised in that: institute
Collimating mirror (2) the surface form deviation RMS value stated is less than [email protected] of λ/10, and refractive error is less than 2%.
3. a kind of device of rapid survey space laser load optical axis variation according to claim 1, it is characterised in that: institute
The No.1 Amici prism (3) and No. two Amici prisms (5) stated are splitting ratio 50:50, and light splitting angle is 45 ° ± 5 ", two groups are horizontal
The parallelism precision of light pass surface is less than 5 ", each light pass surface surface form deviation RMS value is less than the@of λ/10 632.8nm.
4. a kind of device of rapid survey space laser load optical axis variation according to claim 1, it is characterised in that: institute
The absorber of light (4) stated uses perovskite.
5. a kind of device of rapid survey space laser load optical axis variation according to claim 1, it is characterised in that: institute
The rotating accuracy for the prism of corner cube (6) stated is less than 3 ".
6. a kind of device of rapid survey space laser load optical axis variation according to claim 1, it is characterised in that: institute
The surface form deviation RMS value for the attenuator (7) stated is less than λ/10, and decaying multiplying power is 0.5 times.
7. a kind of device of rapid survey space laser load optical axis variation according to claim 1, it is characterised in that: institute
The system wave difference for the off-axis parallel light tube (8) stated is better than the@of λ/15 632.8nm.
8. a kind of device and method of rapid survey space laser load optical axis variation according to claim 1, feature
Be: CCD camera (9) pixel size uses 4.4umX4.4um.
9. a kind of based on a kind of detection side of the device of rapid survey space laser load optical axis variation described in claim 1
Method, it is characterised in that method and step is as follows:
1) single mode fiber laser (1) and collimating mirror (2) relationship are adjusted: being introduced and swashed using the one end of single mode fiber laser (1)
Light is collimated by collimating mirror (2), and collimated light enters parallel light tube after No.1 Amici prism (3) are reflected and in focal plane light beam point
It is imaged in analyzer, by adjusting the beam projecting end face of single mode fiber laser (1) and the relative position of collimating mirror (2), so that
Collimated light imaging point on laser beam analyzer is minimum, and single mode fiber laser (1) and collimating mirror (2) is fixed as one generally
Collimated light group completes the adjusting of collimating mirror (2) and single mode fiber laser (1)；
2) off-axis parallel light tube (8) and CCD camera (9) are adjusted: required wavelength is fixed to 4m parallel light tube focal point first,
Collimated light beam is issued before parallel light tube, off-axis parallel light tube (8) and CCD camera (9) are tentatively fixed in benchmark tooling, is adjusted
CCD camera (9) arrives off-axis parallel light tube (8) relative position, so that hot spot imaging point minimum position, then by off-axis parallel light tube
(8) and CCD camera (9) is fixed as an entirety, completes the adjusting of off-axis parallel light tube (8) and CCD camera (9)；
3) collimated light group and CCD camera group are adjusted: firstly, fixing after two collimated light groups are mutually collimated, then by one
Number Amici prism (3) is placed among two collimated light groups, and before being then placed in parallel light tube together, the first collimated light group passes through one
Number Amici prism (3) is reflected into parallel light tube, and prism of corner cube is added in the exit direction after the second collimated light group reflection on opposite
(6), enter the light entered in parallel light tube after prism of corner cube (6), then adjust the rotation side of No.1 Amici prism (3)
To the point for making two beam collimated lights be driven into parallel light tube is overlapped in focus, and fixed No.1 Amici prism (3), at this time in Jiang Jiao
Cone prism (6) is replaced with CCD camera group, adjusts CCD camera group, is made hot spot in the detector center of CCD camera group and is consolidated
It is fixed, the collimated light group change for being reflected into CCD camera group is then removed at absorber of light (4).Complete collimated light group and CCD camera
The adjusting of group；
4) increase No. two Amici prisms (5) before the No.1 Amici prism (3) of the collimated light group and CCD camera group fixed, and
A prism of corner cube (6) is set respectively on transmission road and reflex circuit opposite, and the prism of corner cube (6) for transmiting road is fixed, adjust two
Number Amici prism (5) make through being transmitted into prism of corner cube (6) then again passed by by No. two Amici prisms (5) reflections it is another
An outer prism of corner cube (6) backtracking behind CCD camera group detector center, fixes No. two light splitting to CCD camera group hot spot
Prism (5).System equipment modulation at this time finishes；
5) decaying multiplying power confirmation: first via laser is reflected by No.1 Amici prism (3) first, and energy is the 0.5 of basic energy
Times, it is reflected subsequently into No. two Amici prisms (5), 0.25 times of outgoing outgoing that system capacity is basic energy is entered after reflection；
Another way laser is reflected by No.1 Amici prism (3), and energy is 0.5 times of basic energy, then passes through No. two Amici prisms
(5) it transmits, energy is 0.25 times of basic energy and is emitted to prism of corner cube (6) after transmission, is reflected into again through prism of corner cube (6)
No. two Amici prisms (5) go out to project being reflected into 0.125 times that system capacity is basic energy through No. two Amici prisms (5)
It penetrates；For equilibrium energy, in 0.5 times of attenuator (7) of addition of the first via, i.e. energy 0.125 times of outgoing being also basic energy.
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| CN201910411854.1A CN110146257B (en) | 2019-05-17 | 2019-05-17 | Device and method for rapidly measuring change of optical axis of space laser load |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114264451A (en) * | 2021-11-25 | 2022-04-01 | 中国空间技术研究院 | Real-time monitoring system and method based on common-reference optical axis included angle |
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