CN203011670U - Target simulation device - Google Patents
Target simulation device Download PDFInfo
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- CN203011670U CN203011670U CN 201220747439 CN201220747439U CN203011670U CN 203011670 U CN203011670 U CN 203011670U CN 201220747439 CN201220747439 CN 201220747439 CN 201220747439 U CN201220747439 U CN 201220747439U CN 203011670 U CN203011670 U CN 203011670U
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- projection screen
- simulation
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- target generator
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- 238000004088 simulation Methods 0.000 title claims abstract description 47
- 230000033001 locomotion Effects 0.000 claims description 7
- 230000011514 reflex Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 abstract description 11
- 238000003384 imaging method Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 7
- 238000007689 inspection Methods 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003071 parasitic effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
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Abstract
The utility model relates to a target simulation device has solved current optical system or camera under the variable object distance condition, can not provide the target in succession and to its imaging quality accurate difficult problem of maring. The simulation device comprises a light source, a simulation objective lens, a projection screen, a beam splitter prism and a target generator which are coaxially arranged in sequence, wherein the beam splitter prism reflects light emitted by the light source to the projection screen and transmits a target generated by the target generator to the projection screen, and the projection screen, the beam splitter prism, the target generator and the light source are all fixed on a translation platform which can move relative to the simulation objective lens. Only one set of equipment is adopted, a target at any position in space can be given, a platform does not need to be built again, the simulated distance precision is in the millimeter level, the working efficiency is greatly improved, the method is suitable for batch inspection, the cost and the time are saved, and the problem that the image quality calibration cannot be carried out on a limited conjugate imaging system with any object distance in a laboratory is solved.
Description
Technical field
The utility model relates to a kind of target simulator, especially a kind of target simulator for measuring optical system or camera imaging quality.
Background technology
Progressively enforcement along with manned space program, between airship and airship dock with the intersection between the cabin, space and can become more and more general, this just require for docking optical system can observe is not only the target of infinite distance, its object distance scope becomes more and more wider, can see simultaneously several meters clearly until the target of infinite distance; The inside and outside camera head that uses of airship, also be used for observing the limited distance target simultaneously.The optical system of limited distance imaging at present is widely used in space industry, and usable range is more and more extensive.For this imaging capability of measuring optical system, must be able to be provided for the target simulator of test of image quality in the laboratory in order to checking.Tradition is used for the method for simulated target two kinds: a kind of is to use parallel light tube simulation infinite distance target, can only demarcate the infinite conjugate imaging optical system, the comparison of parallel light tube graticule is complicated, and different systems under test (SUT) needs the graticule of different size, and fabrication cycle is long and expense is high.Another is closely locating to put target exactly, simulation limited distance target, and the method drawback is more: target need to be built temporarily, wastes time and energy; Stability, repeatability is all bad; Can't guarantee with tested optical system coaxial; Object distance of every conversion will be built once again; The object distance accuracy that provides is low, generally at tens millimeters; And limited by laboratory condition, the target of object distance more than tens meters can not be provided.
Summary of the invention
A kind of can providing continuously is provided closely arrives infinite target simulator, solved existing optical system or camera at variable under condition, the difficult problem of target to its image quality Accurate Calibration can not be provided continuously.
The technical solution that the utility model adopts is as follows:
A kind of target simulator, comprise simulation object lens, projection screen, Amici prism, target generator and light source, the coaxial setting successively of described simulation object lens, projection screen, Amici prism, target generator, the light that described Amici prism sends light source reflexes on projection screen, and the object penetrating that target generator is produced is to projection screen, described projection screen, Amici prism, target generator and light source all are fixed on translation stage, and described translation stage can be with respect to the motion of simulation object lens.
Also be coaxially arranged with zoom objective between Amici prism and target generator.
Projection screen, Amici prism, target generator and light source all are fixed in the second lens barrel, and the second lens barrel is fixed on movably on translation stage.
The simulation object lens are fixed in the first lens barrel, and the peaceful platform that moves of described the first lens barrel all is arranged on two-dimentional turntable.
Target generator generates original object by computer control.
The position movement of two dimension turntable and translation stage is by computer control.
During use, to simulate object lens and be positioned between system under test (SUT) and final goal, and regulate final goal to the focal plane position of simulating object lens, what sent from simulation object lens light-emitting window this moment is directional light, can simulate the infinite distance target, the position of final goal is designated as zero point with this moment; Regulate target when moving near the object lens direction, simulation be exactly the limited distance target, the distance of simulation is by formula
Obtain, wherein L is the limited distance of required simulation, the mm of unit; F is the simulation objective focal length, the mm of unit; Δ be target with respect to the distance that moves zero point, the mm of unit.
The utility model has the advantage of:
1, only adopt a set of equipment, just can provide the target of optional position, space, namely can provide continuously close-in target and to the simulation of infinite distance target, do not need again to set for this platform, the range accuracy of simulation is in the millimeter magnitude simultaneously, and work efficiency increases substantially, and is applicable to the mass check, provide cost savings and the time, solved in the laboratory and can't carry out the difficult problem that picture element is demarcated to the finite conjugate imaging system of any object distance.
2, this device can be used for demarcate optical system or camera at variable the image quality under the condition; When adopting this unit simulation limited distance target, high, the good reproducibility of stability can provide the target of any distance;
3, this device can draw any shape, any size by the computer control target generator figure in the projection screen display, carry out target simulation, and target can change in real time as required, save the loaded down with trivial details matters of making various graticules.
4, use this device, target generator can produce Arbitrary Target in real time, coordinate zoom objective to make the generation of target not only facilitate precision but also high, such as size too little star hole is to be difficult to make, we just can use the target simulator for test of image quality first to produce a larger star hole, then dwindle to obtain a less star hole by zoom objective.
Description of drawings
Fig. 1 is schematic diagram of the present utility model;
Wherein: 1-system under test (SUT); 2-simulation object lens; The 3-the first lens barrel; The 4-the second lens barrel; 5-projection screen; 6-Amici prism; 7-zoom objective; 8-target generator; 9-two-dimentional turntable; 10-light source; 11-translation stage; 12-computing machine.
Embodiment
A kind of target simulation method for test of image quality comprises the following steps:
1] form the needed final goal of simulation; Include but not limited to following two kinds of methods:
Method one: the light illuminating graticule forms the needed final goal of simulation, and graticule can be difform.
Method two: produce original object by target generator, be transmitted on projection screen through Amici prism, the light that Amici prism sends light source simultaneously reflexes on projection screen, forms the needed final goal of simulation.
Better, the computer control target generator produces the needed target of system under test (SUT).
Better, see through again Amici prism after the target that target generator produces zooms in or out through zoom objective and be projected the screen reception, form the needed final goal of simulation.
2] will simulate object lens 2 is positioned between system under test (SUT) 1 and final goal, regulate final goal to the focal plane position of simulating object lens, what sent from simulation object lens light-emitting window this moment is directional light, can simulate the infinite distance target, and the position of final goal is designated as zero point with this moment; Regulate target when moving near the object lens direction, simulation be exactly the limited distance target, the distance of simulation is by formula
Obtain, wherein L is the limited distance of required simulation, the mm of unit; F is the simulation objective focal length, the mm of unit; Δ be target with respect to the distance that moves zero point, the mm of unit.
Better, the position movement of final goal is accurately controlled by computing machine; Projection screen, Amici prism, zoom objective, target generator, light source, simulation object lens are installed in the target that different angles can be provided on two-dimentional turntable as a whole, carry out the demarcation of system under test (SUT) extra-axial imagery quality, the variation of its angle also can accurately be controlled by computing machine.
Be somebody's turn to do the schematic diagram of the target simulator that is used for test of image quality as shown in Figure 1, comprise the first lens barrel 3 and the second lens barrel 4, the second lens barrel can move along the first lens barrel axial direction, be fixed with the simulation object lens in the first lens barrel, in the second lens barrel from the simulation object lens by closely extremely being coaxially arranged with projection screen 5, Amici prism 6, zoom objective 7 and target generator 8 far successively, be provided with light source 10 on another light path of Amici prism.The second lens barrel is fixed on movably on translation stage 11, and the peaceful platform that moves of the first lens barrel all is arranged on two-dimentional turntable 9.The position movement of two dimension turntable and translation stage is by computer control.Target generator is controlled by computing machine 12 and is generated original object.
The simulation object lens are target to be carried out the target as infinite distance or limited distance offers system under test (SUT) after imaging, and objective focal length is determined according to the actual distance that will simulate.Object lens can be the optical systems of any form, any wavelength;
The first lens barrel is for the fixed-analog object lens, stops other parasitic light and enters optical system for testing;
The second lens barrel is for projection screen, Amici prism, zoom objective, target generator, light source are installed, are effectively utilized energy of light source and stop the environment parasitic light as far as possible;
Amici prism is that the light that light source sends is reflexed on projection screen, evenly illuminates projection screen, makes simultaneously the target of target generator generation through projecting on projection screen;
The original object that projection screen receiving target generator produces forms the needed final goal of simulation, provides as the target of simulating object lens;
Target generator can produce difformity, different big or small target as required in real time; The zoom objective multiplying power is adjustable, the figure that target generator produces can be zoomed in or out; The target generator Arbitrary Target, coordinate zoom objective to make the generation of target not only facilitate precision but also high, such as size too little star hole is to be difficult to make, we just can use target simulator first to produce a larger star hole, then dwindle to obtain a less star hole by zoom objective.
Light source can be the luminous objects of all energy such as Halogen lamp LED, integrating sphere, can illuminate the target graticule to get final product, just brightness and the spectral range difference of light source;
The effect of translation stage is to drive the second lens barrel traveling priority, can be manual or automatically controlled, can be also the line slideway of other form;
The effect of two dimension turntable is that the target of different angles is provided by rotation, carries out the demarcation of system under test (SUT) extra-axial imagery quality.
Better, the position movement of two-dimentional turntable and translation stage is accurately controlled by computing machine.
During use, target generator produces original object, through the Amici prism transmission on projection screen, the light that light source sends is radiated on projection screen through Amici prism, form the needed final goal of simulation on projection screen, final goal is seesawed in the first lens barrel by translation stage drive the second lens barrel the target of different object distances is provided through the outgoing of simulation object lens.When projection screen was positioned at the focal plane position of simulation object lens, what send from simulation object lens light-emitting window was directional light, can simulate the infinite distance target, and the absolute position of translation stage is designated as zero point with this moment.When the second lens barrel with translation stage near the object lens direction when moving, simulation be exactly the limited distance target.
The utility model only adopts a set of equipment, close-in target just can be provided continuously and to the simulation of infinite distance target, not need again to set for this platform, and the range accuracy of simulation is in the millimeter magnitude simultaneously.
Claims (6)
1. target simulator, it is characterized in that: comprise simulation object lens, projection screen, Amici prism, target generator and light source, the coaxial setting successively of described simulation object lens, projection screen, Amici prism, target generator, the light that described Amici prism sends light source reflexes on projection screen, and the object penetrating that target generator is produced is to projection screen, described projection screen, Amici prism, target generator and light source all are fixed on translation stage, and described translation stage can be with respect to the motion of simulation object lens.
2. target simulator according to claim 1, is characterized in that: also be coaxially arranged with zoom objective between described Amici prism and target generator.
3. target simulator according to claim 2, it is characterized in that: described projection screen, Amici prism, target generator and light source all are fixed in the second lens barrel, and the second lens barrel is fixed on movably on translation stage.
4. according to claim 1 and 2 or 3 described target simulators, it is characterized in that: described simulation object lens are fixed in the first lens barrel, and the peaceful platform that moves of described the first lens barrel all is arranged on two-dimentional turntable.
5. target simulator according to claim 4, it is characterized in that: described target generator generates original object by computer control.
6. target simulator according to claim 5, it is characterized in that: the position movement of described two-dimentional turntable and translation stage is by computer control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220747439 CN203011670U (en) | 2012-12-28 | 2012-12-28 | Target simulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220747439 CN203011670U (en) | 2012-12-28 | 2012-12-28 | Target simulation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203011670U true CN203011670U (en) | 2013-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220747439 Expired - Fee Related CN203011670U (en) | 2012-12-28 | 2012-12-28 | Target simulation device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499433A (en) * | 2013-09-30 | 2014-01-08 | 中国科学院西安光学精密机械研究所 | Calibration device and method for distortion of f-theta optical system |
| CN103913292A (en) * | 2012-12-28 | 2014-07-09 | 中国科学院西安光学精密机械研究所 | Target simulation method and device |
| CN106060535A (en) * | 2016-07-07 | 2016-10-26 | 西安应用光学研究所 | Television camera performance detector capable of simulating imaging characteristics of external field target |
-
2012
- 2012-12-28 CN CN 201220747439 patent/CN203011670U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103913292A (en) * | 2012-12-28 | 2014-07-09 | 中国科学院西安光学精密机械研究所 | Target simulation method and device |
| CN103499433A (en) * | 2013-09-30 | 2014-01-08 | 中国科学院西安光学精密机械研究所 | Calibration device and method for distortion of f-theta optical system |
| CN106060535A (en) * | 2016-07-07 | 2016-10-26 | 西安应用光学研究所 | Television camera performance detector capable of simulating imaging characteristics of external field target |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20161228 |