CN110954215A - Full-spectrum light target simulator - Google Patents
Full-spectrum light target simulator Download PDFInfo
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- CN110954215A CN110954215A CN201911246558.7A CN201911246558A CN110954215A CN 110954215 A CN110954215 A CN 110954215A CN 201911246558 A CN201911246558 A CN 201911246558A CN 110954215 A CN110954215 A CN 110954215A
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- 238000001228 spectrum Methods 0.000 title claims abstract description 42
- 230000003287 optical effect Effects 0.000 claims abstract description 60
- 230000005457 Black-body radiation Effects 0.000 claims abstract description 9
- 238000004088 simulation Methods 0.000 claims abstract description 6
- 238000013519 translation Methods 0.000 claims description 12
- 230000004075 alteration Effects 0.000 claims description 3
- 238000012937 correction Methods 0.000 claims description 3
- 229910052736 halogen Inorganic materials 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 10
- 238000010586 diagram Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 201000009310 astigmatism Diseases 0.000 description 2
- 238000013441 quality evaluation Methods 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- -1 tungsten halogen Chemical class 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/02—Details
- G01J3/0202—Mechanical elements; Supports for optical elements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/02—Details
- G01J3/10—Arrangements of light sources specially adapted for spectrometry or colorimetry
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Abstract
The invention discloses a full-spectrum light target simulator, which comprises: the collimating optical system is an infinite optical target simulation system; the light source assembly comprises a visible light source, a black body radiation source and an integrating sphere light homogenizing system; the lifting system comprises: the lifting system comprises a first servo motor, a guide rail and a lifting platform; an automatic control system: the automatic control system controls the switching and lifting system of the light source component; the collimating optical system and the light source assembly are both mounted on the lifting table, the light source assembly is located on one side of the collimating optical system and connected with the collimating optical system, and the light source assembly and the lifting system are both connected with the automatic control system. The invention can carry out full-spectrum image quality detection on the large-caliber long-focus space optical remote sensor.
Description
Technical Field
The invention relates to the field of testing of space detection equipment, in particular to a target simulator with the capability of emitting full-spectrum parallel beams.
Background
With the increase of the aperture and the increase of the focal length of the space optical remote sensor, the optical target mode equipment with larger aperture and longer focal length is required to carry out detection and image quality evaluation. The optical target mode equipment with larger caliber and longer focal length has higher requirements on image quality, focal plane position precision, stability of a testing environment and the like. However, the guarantee of the aperture and focal length of the optical target mode device, the guarantee of the image quality level of the collimation system, the guarantee of the position precision of the focal plane of the collimation system, and even the guarantee of the stability of the testing environment are difficult to realize along with the gradual improvement of the technical indexes of the space optical remote sensor. For a space optical remote sensor, ground detection work is the most basic and the most important work, and the work is related to the important problems of whether the optical remote sensor can realize on-orbit smooth work, whether specified scientific research or military mission can be completed, and the like.
At present, the technical levels of manufacturing, processing and the like of large-aperture optical elements make great progress, and important indexes such as spatial resolution, light gathering capacity, signal-to-noise ratio, field of view and the like of a new generation of optical remote sensors can be further improved, but the new challenges are brought to ground detection and image quality evaluation work of the optical remote sensors.
The invention provides a full-spectrum large-aperture optical target simulator, which aims to solve the problems of aperture increase, focal length increase and full-spectrum detection of a space optical remote sensor.
Disclosure of Invention
An object of the present invention is to solve at least the above problems and/or disadvantages and to provide at least the advantages described hereinafter.
The invention provides a full-spectrum large-aperture optical target simulator, which can be used for detecting the image quality of a full-spectrum space optical remote sensor with a large aperture and a long focal length.
To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided a full-spectrum light target simulator, comprising:
the collimating optical system is an infinite optical target simulation system;
the light source assembly comprises a visible light source, a black body radiation source and an integrating sphere light homogenizing system;
the lifting system comprises: the lifting system comprises a first servo motor, a guide rail and a lifting platform;
an automatic control system: the automatic control system controls the switching and lifting system of the light source component;
the collimating optical system and the light source assembly are both mounted on the lifting table, the light source assembly is located on one side of the collimating optical system and connected with the collimating optical system, and the light source assembly and the lifting system are both connected with the automatic control system.
Preferably, the collimating optical system is optimized off-axis by adopting a card structure, and correction plates for expanding a field of view and correcting aberration are respectively arranged in front of and behind the collimating optical system. The reflection and deflection of the light path can shorten the structural length of the system and eliminate astigmatism.
Preferably, the blackbody radiation source comprises a high-temperature blackbody furnace and a low-temperature blackbody furnace which can provide infrared light with different wave bands. The stability and uniformity of the infrared light source are improved.
Preferably, the visible light source is a tungsten halogen light source.
Preferably, the integrating sphere light homogenizing system and the visible light source are a collimating optical system visible light and near infrared band light. The light-emitting uniformity of the light source is ensured.
Preferably, a translation table is arranged below the light source assembly, the translation table is fixed on the lifting table through a guide rail, and a second servo motor is arranged on the translation table and connected with the automatic control system. The guide rail is used for one-dimensional movement, and the translation stage can be moved to switch when which wave band is used, so that the light source of the full spectrum band can be used.
Preferably, the device further comprises a focal plane system, wherein the focal plane system is arranged between the collimating optical system and the light source assembly, is installed on the collimating optical system, and is adjusted in a translation mode in the direction of the optical axis and in the front-back direction of the focal point.
Preferably, the focal plane system is provided with a focal plane target wheel system capable of automatically switching the target plate, and the focal plane target wheel system comprises:
a target wheel: the focusing device comprises a chassis and a target wheel mirror frame, wherein a focal plane target is installed on the mirror frame;
a servo controller for controlling the driving motor;
a driving motor for rotating the target wheel;
the coded disc is arranged on the motor and used for measuring a rotation angle;
a positioning switch disposed on the target wheel;
a positioning sensor fixed on the lifting platform;
the central hole of the chassis is connected with a rotating shaft of a driving motor, and the positioning switch and the positioning sensor are used for resetting the target wheel.
The invention has the beneficial effects that:
1. the full-spectrum optical target simulator has a full-spectrum spectral range and is suitable for detection of space remote sensing equipment in the full-spectrum spectral range;
2. the full-spectrum light target simulator is provided with a full-automatic lifting system, the height of the simulator can be automatically controlled, and the adjustment and the test are convenient;
3. the full-spectrum optical target simulator belongs to a large-caliber long-focus target simulator, and can test the high-precision full-spectrum image quality and detection performance of large-caliber space remote sensing equipment;
4. the full-spectrum light target simulator adopts the clamping off-axis light path, so that the overall dimension of the simulator is effectively reduced, the operation and the test are more convenient, and the field requirement is reduced.
5. The full-spectrum light target simulator is provided with targets with different specifications, and the target wheels can be automatically switched, so that the function of automatically switching and simulating various targets is realized.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an optical target simulator provided in the present invention.
Fig. 2 is a diagram of a collimating optical system of the optical target simulator provided by the present invention.
FIG. 3 is a schematic view of a focal plane assembly of the optical target simulator provided by the present invention.
FIG. 4 is a schematic diagram of a light source switching assembly of the light target simulator provided in the present invention.
Fig. 5 is a schematic diagram of a target wheel structure of the optical target simulator provided by the invention.
Fig. 6 is a schematic diagram of a target mounting structure of the optical target simulator provided in the present invention.
FIG. 7 is a schematic diagram of the switching of the target assembly of the optical target simulator provided by the present invention.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
In order to realize a full-spectrum light target simulator, the invention adopts a design method of automatic switching of each spectrum light source, and carries out automatic switching selection of the required spectrum light source according to the use requirement.
As shown in fig. 1, the full-spectrum light target simulator comprises a collimating optical system 1, a light source assembly 2, a lifting system 3, an automatic control system 4 and the like;
the collimation optical system 1 is used as a transmitting system of a collimated light beam of the full-spectrum light target simulator, namely a simulation system of an infinite optical target;
the light source assembly 2 is a component for providing a uniform light source for a full-spectrum light target simulator and automatically switching, and comprises a full-spectrum integrating sphere light homogenizing system, a visible light source system and a black body radiation light source system, wherein the light source is arranged on a full-automatic translation table, can be automatically controlled to move and can be switched between different spectrum light sources;
the lifting system 3 is a supporting structure for mounting the full-spectrum light target simulator, and adopts a servo motor and a guide rail to carry out lifting control, so that the automatic lifting function of the full-spectrum light target simulator is realized;
the control system 4 is a control system of the light source switching component and the lifting system, and the control system is connected with the light source automatic switching component and a servo motor control system of the lifting mechanism through corresponding communication interfaces, so that the switching of a light source spectrum section and the automatic lifting adjustment of the light target simulator are automatically controlled by software.
As shown in fig. 2, the collimating optical system 1 adopts a card structure to perform off-axis optimization, the light path reflection and refraction can shorten the structural length of the system, eliminate astigmatism, and add correction plates for expanding the field of view and correcting aberration respectively in front and at the back to increase the field of view. The optical system has simple structure and small volume, and is one of the advantages of the full-spectrum light target simulator.
As shown in fig. 3 and 4, the light source assembly 3 includes a visible light source, an integrating sphere dodging system 7, and a blackbody radiation source 6, where the blackbody radiation source 6 can emit light in an infrared band; integrating sphere 7 and the visible light source provide visible light and near infrared band light for the system.
The blackbody radiation source 6 adopts a high-temperature blackbody furnace 8 and a low-temperature blackbody furnace 10 to respectively provide infrared light with different wave bands, so that the stability and uniformity of the infrared light source are improved.
The visible light source system adopts a tungsten halogen light source 9 and an integrating sphere light homogenizing system 7, so that the light emitting uniformity of the light source is ensured.
Three light sources are simultaneously fixed on a translation stage 11, one-dimensional movement is carried out by utilizing a guide rail, and the translation stage can be moved to switch when which wave band is used, so that the light source of the full spectrum band can be used.
As shown in fig. 4, 5, 6, and 7, the full-spectrum light target simulator provided in this embodiment has an automatically switchable target wheel system in the focal plane system, and as a preferred embodiment, the focal plane target wheel 5 can be adjusted in a manner of electric translation back and forth along the optical axis direction in the focal point, so as to meet the requirement of the target simulation of the user.
The servo motor 14 drives the target disk to rotate, and the rotation angle is controlled by the coded disk 13. The rotation angle can be controlled by accurately measuring the rotation angle through the coded disc 13 and feeding an angle signal back to the servo control system 12. On the edge of the target plate, a position switch 15 is mounted, and when the position switch 15 is rotated to the position of the position sensor 16, the controller can detect the signal. By means of this switch, a reset of the target plate is achieved.
The target wheel is driven by a motor to switch focal plane targets, the number of the installed targets can be determined according to requirements, and the targets are uniformly distributed on the target wheel. The target wheel mainly comprises a chassis 17 and six lens frame grooves 18, and a central hole of the chassis is connected with a rotating shaft of a driving motor. Two abdicating grooves and a clamping annular groove are arranged at the position of the frame groove 18 on the front surface of the preferred target wheel. The target 20 is mounted on the target wheel frame 19 and the target wheel frame 19 is then mounted in the frame groove 18.
When the simulator works, the light source component 2 is controlled by the automatic control system 4 to be automatically switched, a proper working spectrum section is switched in real time, the light source component 2 lights a target at the focal plane of the collimating optical system 1 (different targets can be switched by controlling the target wheel to rotate so as to simulate different targets), and after passing through the collimating optical system 1, the simulator emits a corresponding infinite simulation target at a light outlet of the simulator for being received by the detection equipment and carrying out performance evaluation on the detection equipment.
While embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments. It can be applied to all kinds of fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. It is therefore intended that the invention not be limited to the exact details and illustrations described and illustrated herein, but fall within the scope of the appended claims and equivalents thereof.
Claims (8)
1. A full-spectrum optical target simulator, comprising:
the collimating optical system is an infinite optical target simulation system;
the light source assembly comprises a visible light source, a black body radiation source and an integrating sphere light homogenizing system;
the lifting system comprises: the lifting system comprises a first servo motor, a guide rail and a lifting platform;
an automatic control system: the automatic control system controls the switching and lifting system of the light source component;
the collimating optical system and the light source assembly are both mounted on the lifting table, the light source assembly is located on one side of the collimating optical system and connected with the collimating optical system, and the light source assembly and the lifting system are both connected with the automatic control system.
2. The full-spectrum optical target simulator of claim 1, wherein the collimating optical system is optimized off-axis by a cassette structure, and correction plates for expanding a field of view and correcting aberrations are respectively provided in front of and behind the collimating optical system.
3. The full spectrum band light target simulator of claim 1 wherein the blackbody radiation source comprises a high temperature blackbody furnace and a low temperature blackbody furnace that provide different bands of infrared light.
4. The full-spectrum light target simulator of claim 1, wherein the visible light source is a tungsten-halogen light source.
5. The full-spectrum light target simulator of claim 1, wherein the integrating sphere dodging system and the visible light source are collimating optics system visible light and near infrared band light.
6. The full-spectrum light target simulator of claim 1, wherein a translation stage is arranged below the light source assembly, the translation stage is fixed on the lifting stage through a guide rail, and the translation stage is provided with a second servo motor, and the second servo motor is connected with an automatic control system.
7. The full-spectrum light target simulator of claim 1, further comprising a focal plane system disposed between the collimating optical system and the light source assembly and mounted on the collimating optical system for translational adjustment in the direction of the optical axis back and forth at the focal point.
8. The full-spectrum light target simulator of claim 7, wherein the focal plane system is provided with a focal plane target wheel system capable of automatically switching the target plate, and comprises:
a target wheel: the focusing device comprises a chassis and a target wheel mirror frame, wherein a focal plane target is installed on the mirror frame;
a servo controller for controlling the driving motor;
a driving motor for rotating the target wheel;
the coded disc is arranged on the motor and used for measuring a rotation angle;
a positioning switch disposed on the target wheel;
a positioning sensor fixed on the lifting platform;
the central hole of the chassis is connected with a rotating shaft of a driving motor, and the positioning switch and the positioning sensor are used for resetting the target wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911246558.7A CN110954215A (en) | 2019-12-07 | 2019-12-07 | Full-spectrum light target simulator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911246558.7A CN110954215A (en) | 2019-12-07 | 2019-12-07 | Full-spectrum light target simulator |
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| CN110954215A true CN110954215A (en) | 2020-04-03 |
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| CN201911246558.7A Pending CN110954215A (en) | 2019-12-07 | 2019-12-07 | Full-spectrum light target simulator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113324733A (en) * | 2021-06-04 | 2021-08-31 | 中科院南京耐尔思光电仪器有限公司 | Movable target simulation system used in vacuum environment |
| CN116642669A (en) * | 2023-06-27 | 2023-08-25 | 湖南迈克森伟电子科技有限公司 | Infrared and visible light target simulation device |
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