CN105043723B - Large area extends radiation calibration light source cosine characteristic test device and its method of testing - Google Patents
Large area extends radiation calibration light source cosine characteristic test device and its method of testing Download PDFInfo
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- CN105043723B CN105043723B CN201510457855.1A CN201510457855A CN105043723B CN 105043723 B CN105043723 B CN 105043723B CN 201510457855 A CN201510457855 A CN 201510457855A CN 105043723 B CN105043723 B CN 105043723B
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Abstract
Large area extends radiation calibration light source cosine characteristic test device and its method of testing belongs to space optics field, and device includes：Unit radiometer, arc-shaped guide rail, connector, turntable, vertical guide rail, horizontal guide rail, supporting table, controller and computer；Unit radiometer passes through absolute radiometric calibration, with preferable uniformity, is evenly distributed on arc-shaped guide rail, and arc-shaped guide rail moves in a circle under the drive of turntable, completes cosine characteristic test.The combination is arranged on vertical guide rail, vertical guide rail and horizontal guide rail composition Two-dimensional motion device；Horizontal guide rail is fixed in supporting table.Computer software controls Two-dimensional motion device and turntable by controller, completes the cosine characteristic test of multiple location points.By test data a little handled, obtain the cosine characteristic of whole radiating surface.The built-in light source that the present invention adjusts large area extension radiation calibration light source according to test result is combined, and its radiation sent under the combination is had preferable cosine characteristic.
Description
Technical field
The invention belongs to space optics field, and in particular to large area extends radiation calibration light source cosine characteristic test device
And its method of testing.
Background technology
Radiation calibration is one of important step in space optical camera development process.With the development of science and technology, it is empty
Between camera visual field and light inlet footpath it is increasing, light inlet footpath reaches 3.2m magnitudes at present.To meet the radiation of space camera
Calibration is required, it is necessary to which Radiometric calibration facility, which is provided, uniformly reaches that 3.2m magnitudes large area extends radiation calibration light source, and big face
Product extension radiation calibration light source is Lambertian source, it is desirable to which all directions brightness in the hemisphere solid space of exiting surface is identical,
Brightness is closer to the cosine characteristic of light source is better, and the radiation calibration influence on space camera is smaller.Therefore in space camera radiation
The cosine characteristic for extending radiation calibration light source to the large area of 3.2m magnitudes is needed to test before calibration.By to test data
Analysis, can obtain the optimum organization control that radiation calibration built-in light-source bromine tungsten filament lamp is extended to large area.Make it under the combination
Large area extension radiation calibration light source cosine characteristic reach preferably state of the art.Other test data can also be space
The radiation calibration calibration of the output results of camera provides reliable data.
Because there is presently no the cosine characteristic test device that the large area of 3.2m magnitudes extends radiation calibration light source.Before this
Pacify the cosine characteristic test device of the inventions such as light institute, moved in a circle using single radiometer, be adapted to test small-bore radiation
The cosine characteristic of scaling light source central area.Such large area extension radiation calibration test of light source can not be used at all.Big face
The area of product extension radiation calibration light source is big, and the cosine characteristic at each position has certain difference in whole radiating surface, separately
If the outer testing time is long, the unstability factor of light source can be incorporated into the test result of cosine characteristic.
The content of the invention
In order to solve problems of the prior art, more than a kind of large area extension radiation calibration light source
String characteristic test device and its method of testing.
The technical proposal for solving the technical problem of the invention is as follows：
Large area extends radiation calibration light source cosine characteristic test device, and the device includes：Unit radiometer, arc are led
Rail, connector, turntable, vertical guide rail, horizontal guide rail, supporting table, controller and computer；Multiple unit radiometers uniformly divide
Step is on arc-shaped guide rail, and arc-shaped guide rail is connected by connector with turntable；Turntable is moved on vertical guide rail；Vertical guide rail
Moved on horizontal guide rail；Horizontal guide rail is fixed in supporting table；Computer by controller control turntable, vertical guide rail and
The motion of horizontal guide rail, the radiance value of control unit radiometer collection, and calculate the remaining of large area radiation calibration light source
String characteristic.
Large area extends radiation calibration light source cosine characteristic method of testing, and this method comprises the following steps：
Step one：Computer controls vertical guide rail and horizontal guide rail by controller, is moved to behind the position specified, and controls
Turntable drives arc-shaped guide rail rotation, and 180 ° are rotated with equally spaced angle, and all unit radiation are gathered in each angle position
The radiance data of meter, and by data storage, each position point radiance formed in ± 45 ° of space multistory angles is adopted
The cosine characteristic at the position is calculated after the completion of collection；
Step 2：Two dimension guide rail is moved to other positions, repeat step one；
Step 3：The radiance with equal angular of all position measurements in large area radiation source radiating surface is calculated
Average value, is handled by normalization data, obtains the cosine characteristic of whole test surfaces.
The beneficial effects of the invention are as follows：The present invention is according to built in test result adjusts large area extension radiation calibration light source
The combination of light source, makes the radiation that large area extension radiation calibration light source is sent under the combination have preferable cosine characteristic, and
Set up corresponding database.Other cosine characteristic test data can be provided with the radiant correction of space camera accurately and reliably to be counted
According to.
Brief description of the drawings
Fig. 1 large area extension radiation calibration light source cosine characteristic test device structural representations of the present invention.
In figure：1st, unit radiometer, 2, arc-shaped guide rail, 3, connector, 4, turntable, 5, vertical guide rail, 6, horizontal guide rail,
7th, supporting table, 8, controller and 9, computer.
Embodiment
The present invention is described in further details with reference to the accompanying drawings and examples.
As shown in figure 1, radiation detection component is by 47 identical unit radiometers 1, arc-shaped guide rail 2, an arc
The connector 3 of guide rail 2 and turntable 4 is constituted.Wherein the visual field of unit radiometer 1 is 1 °, and the test hot spot on test surfaces is
Φ35mm；Arc-shaped guide rail 2 is 1/4 arc-shaped rail that arc radius is 1m, for installing 47 unit radiometers, each unit
The normal of radiometer 1 points to the center of arc-shaped guide rail 2, and temporary location radiometer 1 extends radiation calibration Light Source Method relative to large area
The angle of line is 0 °, and the angle of two adjacent unit radiometers 1 of left and right is ± 1 °, and then other unit radiometers 1 are spaced 2 °
It is arranged in order, forms ± 45 ° of test zone.47 unit radiometers 1 are before use, using having in radiation detector package
Small-bore area radiation source of the cosine spy better than 99.99% is demarcated, after strict radiation calibration, 47 unit radiation
Meter 1 has 99.9% uniformity.The connector 3 of arc-shaped guide rail 2 and turntable 4 is arranged on arc-shaped guide rail 2, for rotation
The mechanical connection of platform 4.
Horizontal guide rail 6 is installed on support frame 7, and vertical guide rail 5 is installed on horizontal guide rail 6, is driven by horizontal guide rail 6 vertical
Straight guide 5 is moved in the horizontal direction, and turntable 4 is attached on vertical guide rail 6, drives turntable 4 to do Vertical Square by vertical guide rail 5
To movement.Radiation detection component is attached on turntable 4, drives radiation detection component to do with turntable central shaft by turntable 4
For the circular motion of main shaft.The effective travel of horizontal guide rail 6 and vertical guide rail 5 reaches 3.6m, and turntable can be rotated with 360 °,
180 ° of rotations are only needed in the present invention can meet requirement.Computer 9 controls three-dimensional guide rail to drive radiation detection group with controller 8
Part completes corresponding data acquisition and test to the cosine characteristic test position of large area radiating light source.Obtain after data by counting
Software in calculation machine 9 completes corresponding computing.
Radiation detection component used herein completes to extend the cosine in radiation calibration light source ± 45 ° perpendicular to large area
Characteristic test.Can appropriate expanded- angle scope as needed.
Large area extends the method for testing of radiation calibration light source cosine characteristic test device, and this method comprises the following steps：
Step one：Computer 9 controls vertical guide rail 5 and horizontal guide rail 6 using communication interface by controller 8, is moved to
Behind the position specified, control turntable 4 drives arc-shaped guide rail 2 to rotate, and 180 ° are rotated with equally spaced angle, in each angle position
The radiance data for gathering all unit radiometers 1 are put, and data storage are formed in one ± 45 ° of space multistory angle
Each position point radiance, calculates the cosine characteristic at the position after the completion of collection；
Step 2：Mobile vertical guide rail 5 and horizontal guide rail 6 to other positions, repeat step one complete multiple location points
Cosine characteristic is tested；
Step 3：The radiance with equal angular of all position measurements in large area radiation source radiating surface is calculated
Average value, is handled by normalization data, obtains the cosine characteristic of whole test surfaces.
Claims (6)
1. large area extends radiation calibration light source cosine characteristic test device, it is characterised in that the device includes：Multiple unit spokes
Penetrate meter, arc-shaped guide rail, connector, turntable, vertical guide rail, horizontal guide rail, supporting table, controller and computer；It is the multiple
Unit radiometer is evenly distributed on arc-shaped guide rail, and arc-shaped guide rail is 1/4 circular arc, and arc-shaped guide rail is connected by connector and turntable
Connect；Turntable is moved on vertical guide rail；Vertical guide rail is moved on horizontal guide rail；Horizontal guide rail is fixed in supporting table；Meter
Calculation machine controls the motion of vertical guide rail and turntable by controller, and the radiance value of control unit radiometer collection is calculated
Go out the cosine characteristic of large area radiation calibration light source.
2. large area according to claim 1 extends radiation calibration light source cosine characteristic test device, it is characterised in that institute
The central angle for stating arc-shaped guide rail is 90 °.
3. large area according to claim 1 extends radiation calibration light source cosine characteristic test device, it is characterised in that position
It is parallel with the normal direction for treating targeting device in the central shaft of the turntable.
4. large area according to claim 1 extends radiation calibration light source cosine characteristic test device, it is characterised in that institute
State unit radiometer has uniformity after radiation calibration.
5. large area according to claim 1 extends radiation calibration light source cosine characteristic test device, it is characterised in that institute
The normal for stating each unit radiometer points to the arc-shaped guide rail center of circle.
6. a kind of test side that radiation calibration light source cosine characteristic test device is extended using large area as claimed in claim 1
Method, it is characterised in that this method comprises the following steps：
Step one：Computer controls vertical guide rail and turntable by controller, is moved to behind the position specified, and controls turntable
Arc-shaped guide rail rotation is driven, 180 ° are rotated with equally spaced angle, the spoke of all unit radiometers is gathered in each angle position
Brightness data is penetrated, and by data storage, each position point radiance formed in ± 45 ° of space multistory angles, collection is completed
The cosine characteristic at the position is calculated afterwards；
Step 2：Mobile two dimension guide rail to other positions, repeat step one completes the cosine characteristic test of multiple location points；
Step 3：The radiance with equal angular of all position measurements in large area radiation source radiating surface is calculated average
Value, is handled by normalization data, obtains the cosine characteristic of whole test surfaces.
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| CN201510457855.1A CN105043723B (en) | 2015-07-30 | 2015-07-30 | Large area extends radiation calibration light source cosine characteristic test device and its method of testing |
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| CN105043723B true CN105043723B (en) | 2017-09-26 |
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| CN108776002B (en) * | 2018-05-28 | 2024-04-12 | 中国科学院西安光学精密机械研究所 | Uniform light source angle uniformity testing device and method |
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| CN201673031U (en) * | 2010-05-17 | 2010-12-15 | 西安炬光科技有限公司 | Far-field test device of turnplate type semiconductor laser |
| CN102213615A (en) * | 2011-04-01 | 2011-10-12 | 中国兵器工业第二〇五研究所 | LED optical parameter comprehensive testing device |
| CN102901619A (en) * | 2012-10-10 | 2013-01-30 | 西安炬光科技有限公司 | Test device and test method for light beam characteristics of three-dimensional laser device |
| CN204359512U (en) * | 2014-12-20 | 2015-05-27 | 中国科学院西安光学精密机械研究所 | A kind of heavy caliber parallel light tube wavefront and image planes position label means |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7295293B2 (en) * | 2005-10-21 | 2007-11-13 | Hewlett-Packard Development Company, L.P. | Apparatus and method for testing a reflector coating |
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| CN201673031U (en) * | 2010-05-17 | 2010-12-15 | 西安炬光科技有限公司 | Far-field test device of turnplate type semiconductor laser |
| CN102213615A (en) * | 2011-04-01 | 2011-10-12 | 中国兵器工业第二〇五研究所 | LED optical parameter comprehensive testing device |
| CN102901619A (en) * | 2012-10-10 | 2013-01-30 | 西安炬光科技有限公司 | Test device and test method for light beam characteristics of three-dimensional laser device |
| CN204359512U (en) * | 2014-12-20 | 2015-05-27 | 中国科学院西安光学精密机械研究所 | A kind of heavy caliber parallel light tube wavefront and image planes position label means |
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