CN210322255U - Optical axis parallelism calibration system of common-aperture multispectral photoelectric detection system - Google Patents
Optical axis parallelism calibration system of common-aperture multispectral photoelectric detection system Download PDFInfo
- Publication number
- CN210322255U CN210322255U CN201921381521.0U CN201921381521U CN210322255U CN 210322255 U CN210322255 U CN 210322255U CN 201921381521 U CN201921381521 U CN 201921381521U CN 210322255 U CN210322255 U CN 210322255U
- Authority
- CN
- China
- Prior art keywords
- laser
- visible light
- spectroscope
- infrared
- common
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 45
- 238000001514 detection method Methods 0.000 title claims abstract description 20
- 230000005855 radiation Effects 0.000 claims abstract description 12
- 238000003384 imaging method Methods 0.000 claims abstract description 8
- 230000000712 assembly Effects 0.000 claims abstract description 4
- 238000000429 assembly Methods 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 6
- 230000003595 spectral effect Effects 0.000 claims description 4
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 230000001678 irradiating effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 8
- 238000005034 decoration Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004297 night vision Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Landscapes
- Optical Radar Systems And Details Thereof (AREA)
- Radiation Pyrometers (AREA)
Abstract
The utility model discloses an optical axis parallelism calibration system of a common-aperture multispectral photoelectric detection system, which comprises a two-dimensional turntable, a control computer, an optical-mechanical component, a common-aperture component, a first spectroscope, an infrared reflector, a second spectroscope, a laser reflector, an infrared thermal imager, a visible light television, a laser measuring and irradiating device, an image processing board and a control board; the two-dimensional turntable bears and fixes the optical-mechanical assembly; the control computer is connected with the control panel and the image processing panel; the optical-mechanical assembly is used for providing a mounting seat for other assemblies and elements; the common aperture component is used for providing common aperture receiving of visible light and infrared radiation; the first spectroscope is highly reflective to infrared radiation; the infrared reflector is highly reflective to infrared radiation; the second spectroscope is highly transparent to visible light and partially transparent to laser; the laser reflector reflects laser highly; the visible light TV comprises a laser narrow-band filter which can be switched and inserted, and a detector of the visible light TV has the function of exposure imaging synchronously with laser emission.
Description
Technical Field
The utility model belongs to the photoelectric detection field especially relates to a multispectral photoelectric detection system's in common aperture optical axis parallelism calbiration system.
Background
The multispectral integrated photoelectric detection technology is widely applied to platforms such as vehicles, aircrafts, missile-borne platforms, ship-borne platforms and spacecraft. The multispectral integrated photoelectric detection equipment often comprises a visible light television, a low-light night vision, a medium-wave thermal infrared imager, a long-wave thermal infrared imager, a laser ranging/irradiator and the like, and all spectral detection loads work cooperatively, so that high optical axis parallelism must be kept, and system detection and weapon hitting precision are guaranteed.
The method aims at the multispectral optical axis parallelism calibration method, and relevant units in China are researched. The common multispectral optical axis parallelism calibration equipment is a large-aperture collimator, a multispectral target plate and the like are placed on the focal plane of the collimator, and the multispectral optical axis parallelism calibration purpose is achieved by adjusting the imaging view field center of the multispectral target plate to be coincident with the laser spot center on the multispectral target plate through detecting loads such as a visible light television, a thermal infrared imager and the like. The caliber of the system is increased by a patent CN201811499210, the system precision is improved by the patent CN201621031161, and an automatic optical axis calibration system is designed by the patents CN201720786674 and CN201810338318 through an image processing method, so that manual judgment deviation is avoided, and the axis calibration efficiency is improved. The methods can be only carried out in a laboratory or on the ground, complex optical axis calibration equipment is needed, and multispectral equipment cannot be calibrated on various application platforms in real time. Patent CN201410100387 installs a laser spot tracker of a short-wave infrared band in a multispectral system, and realizes multispectral optical axis fast calibration according to laser spot detection, external feature targets and an image processing technology, without external complex equipment, but this method needs an expensive short-wave infrared camera.
SUMMERY OF THE UTILITY MODEL
For overcoming the deficiencies of the prior art, the utility model provides an optical axis parallelism calibration system and method of many spectrum photoelectric detection system in common aperture.
The utility model discloses a technical scheme do, an optical axis parallelism calbiration system of multispectral photoelectric detection system in aperture altogether, a serial communication port, including two-dimentional revolving stage, control computer, ray apparatus subassembly, aperture subassembly, first spectroscope, infrared reflector, second spectroscope, laser reflector, thermal infrared imager, visible light TV, laser survey and shine ware, image processing board and control panel altogether.
The two-dimensional turntable is used for bearing and fixing the optical-mechanical assembly and adjusting the azimuth and the pitch angle of the optical-mechanical assembly;
the control computer is connected with the control panel and the image processing panel, and sends commands to the control panel to display videos of the visible light television and the thermal infrared imager which are output by the image processing panel;
the optical-mechanical assembly is used for providing a mounting seat for other assemblies and elements;
the common-aperture component is used for providing common-aperture receiving of visible light and infrared radiation, outputting parallel light after compressing the size of a light beam, and simultaneously serving as a transmitting antenna of laser;
the first spectroscope is arranged at an angle of 45 degrees with the emergent optical axis of the common aperture component, and is highly reflective to infrared radiation and highly transparent to visible light and laser;
the infrared reflecting mirror is arranged in a reflecting light path of the first spectroscope, is parallel to the first spectroscope and highly reflects infrared radiation;
the second spectroscope is arranged in the transmission light path of the first spectroscope, is vertical to the first spectroscope, is highly transparent to visible light and partially transmits laser;
the laser reflector is arranged in a reflection light path of the second spectroscope, is parallel to the second spectroscope and highly reflects laser;
the optical axis of the thermal infrared imager is superposed with the reflection light path of the infrared reflector, and the thermal infrared imager is used for providing a medium wave infrared image;
the optical axis of the visible light television is superposed with the transmission light path of the second spectroscope, and the visible light television is used for providing a visible light image;
and the emission optical axis of the laser illuminator coincides with the reflection optical path of the laser reflector, and the laser illuminator is used for emitting laser to measure the distance of a target.
The image processing board is connected with the thermal infrared imager, the visible light television and the control board and is used for detecting characteristic targets in the infrared images and the visible light images.
The control panel is connected with and controls the thermal infrared imager, the visible light television, the laser detector and the image processing panel to work.
The parallelism of optical axes of the thermal infrared imager, the visible light television and the laser detector after installation is 50 mu rad, and the optical axis can be adjusted through the installation positions and angles of the first spectroscope, the infrared reflecting mirror, the second spectroscope and the laser reflector.
The visible light television comprises a laser narrow-band filter, and the laser narrow-band filter can be switched to move in or out of an imaging light path through electric control and a normal filter.
The detector of the visible light television has a spectral response rate not lower than 5% in a laser wave band, and has a synchronous exposure imaging function with laser emission.
The system performs the following steps to realize optical axis parallelism calibration:
step 1, a control computer sends a command to a control panel, the control panel controls a visible light television to output a visible light video to be displayed on the control computer, and a two-dimensional turntable is adjusted to change the overall direction of an optical-mechanical assembly, so that a sighting cross line of the visible light television video is aligned to a target with the distance of 0.5 km-1 km;
step 2, the control computer sends a command to the control panel, so that the control panel controls the visible light television to switch and insert the laser narrow-band filter, and controls the laser illuminator to irradiate the laser, the laser irradiates to a target after passing through the laser reflector, the second beam splitter, the first beam splitter and the common-aperture component, a laser echo enters the visible light television after being received, and the visible light television outputs a laser spot video to the image processing panel;
step 3, the image processing board detects the laser faculae in the image to obtain the pixel coordinate (X) of the centroid position1，Y1)，X1，Y1Respectively representing the abscissa and ordinate of the centroid position pixel, and outputting the coordinates (X) of the visible light sighting cross line position pixel0，Y0) Deviation (X) between1-X0，Y1-Y0) Output to the control board, X0，Y0Respectively representing the abscissa and ordinate of the reticle position pixel;
step 4, the control panel controls the visible light television to adjust the collimation cross line position to coincide with the laser spot mass center, and the calibration of the parallelism of the visible light television and the laser optical axis is realized;
step 5, the control panel controls the visible light television to switch out of the laser narrow-band filter, namely the laser narrow-band filter is electrically controlled to move out, the visible light video output by the visible light television is displayed on the control computer, and the two-dimensional turntable is adjusted to change the overall direction of the optical-mechanical assembly, so that the visible light television aims at the cross line and is aligned to the center of the characteristic target;
And 7, controlling the thermal infrared imager to adjust the collimation cross line to coincide with the center of the characteristic target by the control board, and realizing the calibration of the parallelism of the thermal infrared imager, the visible light television and the laser optical axis.
Has the advantages that:
1. the utility model can quickly and automatically calibrate the parallelism of the optical axis of the common-aperture multispectral photoelectric detection system without external complex equipment;
2. the method avoids adding an expensive short-wave infrared camera in the common-aperture multispectral photoelectric detection system, and does not need to additionally add a photoelectric sensor;
3. the laser emission and the light spot detection share a light path, and the optical axis calibration precision can be improved.
Drawings
These and other advantages of the invention will become apparent from the following more detailed description of the invention, when taken in conjunction with the accompanying drawings and detailed description.
Fig. 1 is a schematic diagram of the system of the present invention.
Detailed Description
The present invention will be further explained with reference to the drawings and the embodiments.
The utility model discloses multispectral photoelectric detection system's in aperture optical axis parallelism calbiration system altogether, including two-dimensional revolving stage 1, control computer 2, ray apparatus subassembly 3, aperture subassembly 4, first spectroscope 5, infrared reflector 6, second spectroscope 7, laser mirror 8, thermal infrared imager 9, visible light TV 10, laser survey camera 11, image processing board 12, control panel 13 altogether. The visible light television 10 includes a switchable laser narrowband filter 14 (the control computer and other control hardware involved in the present invention may be commercially available).
In the embodiment, the two-dimensional turntable 1 bears and fixes the optical-mechanical assembly 1, and the azimuth and the pitch angle can be adjusted; the control computer 2 is connected with the control panel 13 and the image processing panel 12, sends commands to the control panel, and displays videos of the visible light television and the thermal infrared imager output by the image processing panel. The opto-mechanical assembly 3 provides a mounting seat for other assemblies and elements; the common-aperture component 4 is a Cassegrain afocal coaxial three-reflection common-path optical system, provides common-aperture receiving of small-field visible light and infrared radiation, compresses the size of a light beam, outputs the light beam as parallel light, and simultaneously serves as a laser transmitting antenna; the first spectroscope 5 and the emergent optical axis of the common-aperture component 4 are arranged at an angle of 45 degrees, and are highly reflective to infrared radiation and highly transparent to visible light and laser; the infrared reflecting mirror 6 is arranged in the transmission light path of the first spectroscope 5, is parallel to the first spectroscope 5 and highly reflects infrared radiation; the second spectroscope 7 is arranged in a transmission light path of the first spectroscope 5, is vertical to the first spectroscope 5, has high transmittance on visible light and partially transmits laser; the laser reflector 8 is arranged in the reflection light path of the second beam splitter 7, is parallel to the second beam splitter 7 and reflects laser light highly.
The optical axis of the thermal infrared imager 9 is superposed with the reflection light path of the infrared reflector 6 to provide a medium wave infrared image; the optical axis of the visible light television 10 is superposed with the transmission light path of the second spectroscope 7 to provide a visible light image; the emission optical axis of the laser illuminator 11 is superposed with the reflection optical path of the laser reflector 8, and the laser is emitted to measure the distance of the target.
The image processing board 12 is connected with the thermal infrared imager 9, the visible light television 10 and the control board, and detects characteristic targets in the infrared image and the visible light image. The control board 13 is connected with and controls the thermal infrared imager 9, the visible light television 10, the laser detector 11 and the image processing board 12 to work.
The parallelism of optical axes of the thermal infrared imager 9, the visible light television 10 and the laser camera 11 after installation is 50 mu rad, and fine adjustment is carried out through the installation positions and angles of the first spectroscope 5, the infrared reflecting mirror 6, the second spectroscope 7 and the laser reflecting mirror 8. The visible light television 10 comprises a laser narrow-band filter, the laser narrow-band filter can be moved into or out of an imaging light path through electric control, and a detector of the visible light television has a spectral response rate not lower than 5% in a laser wave band and has a synchronous exposure imaging function with laser emission.
The visible light television 10 of the present embodiment is of a global exposure type. In the present embodiment, the laser wavelength of the laser beam detector 11 is 1064nm, and the laser energy is suitably increased. The laser emission is arranged separately from the laser reception. The common-aperture multispectral photoelectric detection system of the embodiment is provided with a large and medium visual field visible light television and an uncooled thermal infrared imager which are independent. The optical axis parallelism calibration method of the common-aperture multispectral photoelectric detection system comprises the following steps:
a) the control computer sends a command to the control panel, the control panel controls the visible light television to output a visible light video to be displayed on the control computer, and the two-dimensional turntable is adjusted to change the overall direction of the optical-mechanical assembly, so that the aiming cross line of the visible light television video is aligned to a target 0.5 km-1 km away;
b) the control computer sends a command to the control panel, the control panel controls the visible light television to be switched and inserted into the laser narrow-band filter and controls the laser camera to carry out laser irradiation, laser irradiates to a target after passing through the laser reflector, the second spectroscope, the first spectroscope and the common-aperture component, a laser echo enters the visible light television after being received, and the visible light television outputs a laser spot video to the image processing panel;
c) the image processing board detects laser spots in the image to obtain the pixel coordinate (X) of the centroid position1，Y1) Outputting and visible light sighting cross line position pixel coordinate (X)0，Y0) Deviation (X) between1-X0，Y1-Y0) And output to the control panel;
d) the control panel controls the visible light television to adjust the aiming cross line position to coincide with the laser spot mass center, so that the calibration of the parallelism of the visible light television and the laser optical axis is realized;
e) the control panel controls the visible light television to switch out of the laser narrow-band filter, the visible light television outputs a visible light video to be displayed on the control computer, and the two-dimensional turntable is adjusted to change the overall direction of the optical-mechanical assembly, so that the visible light television aims at a cross line to be aligned with the center of the characteristic target;
f) the image processing board detects the characteristic target to obtain the central position coordinate (X) of the characteristic target2，Y2) Outputting and aiming the thermal infrared imager at the position coordinate (X) of the cross line3，Y3) Deviation (X) between2-X3，Y2-Y3)；
g) The control panel controls the thermal infrared imager to adjust the aiming cross line to coincide with the center of the characteristic target, and the calibration of the parallelism of the thermal infrared imager, the visible light television and the laser optical axis is realized.
The utility model provides a multispectral photoelectric detection system's in common aperture optical axis parallelism calbiration system specifically realizes that this technical scheme's method and approach are many, above only the utility model discloses a preferred embodiment should point out, to ordinary technical personnel in this technical field, does not deviate from the utility model discloses under the prerequisite of principle, can also make a plurality of improvements and moist decorations, these improvements should also regard as with moist decorations the utility model discloses a protection scope. All the components not specified in the present embodiment can be realized by the prior art.
Claims (6)
1. An optical axis parallelism calibration system of a common-aperture multispectral photoelectric detection system is characterized by comprising a two-dimensional turntable, a control computer, an optical-mechanical component, a common-aperture component, a first spectroscope, an infrared reflector, a second spectroscope, a laser reflector, an infrared thermal imager, a visible light television, a laser detector, an image processing board and a control board,
the two-dimensional turntable is used for bearing and fixing the optical-mechanical assembly and adjusting the azimuth and the pitch angle of the optical-mechanical assembly;
the control computer is connected with the control panel and the image processing panel, and sends commands to the control panel to display videos of the visible light television and the thermal infrared imager which are output by the image processing panel;
the optical-mechanical assembly is used for providing a mounting seat for other assemblies and elements;
the common-aperture component is used for providing common-aperture receiving of visible light and infrared radiation, outputting parallel light after compressing the size of a light beam, and simultaneously serving as a transmitting antenna of laser;
the first spectroscope is arranged at an angle of 45 degrees with the emergent optical axis of the common aperture component, and is highly reflective to infrared radiation and highly transparent to visible light and laser;
the infrared reflecting mirror is arranged in a reflecting light path of the first spectroscope, is parallel to the first spectroscope and highly reflects infrared radiation;
the second spectroscope is arranged in the transmission light path of the first spectroscope, is vertical to the first spectroscope, is highly transparent to visible light and partially transmits laser;
the laser reflector is arranged in a reflection light path of the second spectroscope, is parallel to the second spectroscope and highly reflects laser;
the optical axis of the thermal infrared imager is superposed with the reflection light path of the infrared reflector, and the thermal infrared imager is used for providing a medium wave infrared image;
the optical axis of the visible light television is superposed with the transmission light path of the second spectroscope, and the visible light television is used for providing a visible light image;
and the emission optical axis of the laser illuminator coincides with the reflection optical path of the laser reflector, and the laser illuminator is used for emitting laser to measure the distance of a target.
2. The system of claim 1, wherein the image processing board is connected to the thermal infrared imager, the visible light television, and the control board, and is configured to detect the characteristic targets in the infrared image and the visible light image.
3. The system of claim 2, wherein the control board is connected with and controls the thermal infrared imager, the visible light television, the laser detector and the image processing board to work.
4. The system of claim 3, wherein the thermal infrared imager, the visible light television and the laser camera have an optical axis parallelism of 50 μ rad after installation, and can be adjusted by the installation positions and angles of the first spectroscope, the infrared reflector, the second spectroscope and the laser reflector.
5. The system of claim 4, wherein the visible light television comprises a laser narrowband filter that can be switched into or out of the imaging optical path by electrical control with a normal filter.
6. The system of claim 5, wherein the detector of the visible light television has a spectral responsivity of not less than 5% in a laser band, and the detector of the visible light television has an exposure imaging function synchronized with laser emission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921381521.0U CN210322255U (en) | 2019-08-23 | 2019-08-23 | Optical axis parallelism calibration system of common-aperture multispectral photoelectric detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921381521.0U CN210322255U (en) | 2019-08-23 | 2019-08-23 | Optical axis parallelism calibration system of common-aperture multispectral photoelectric detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210322255U true CN210322255U (en) | 2020-04-14 |
Family
ID=70131146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921381521.0U Withdrawn - After Issue CN210322255U (en) | 2019-08-23 | 2019-08-23 | Optical axis parallelism calibration system of common-aperture multispectral photoelectric detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210322255U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110487514A (en) * | 2019-08-23 | 2019-11-22 | 江苏和正特种装备有限公司 | A kind of plain shaft parallelism calibration system of the multispectral photoelectric detecting system in aperture altogether |
| CN114326011A (en) * | 2021-12-07 | 2022-04-12 | 华中光电技术研究所（中国船舶重工集团公司第七一七研究所） | System and method for online calibration of optical axis relative errors of multiband common-aperture photoelectric equipment |
-
2019
- 2019-08-23 CN CN201921381521.0U patent/CN210322255U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110487514A (en) * | 2019-08-23 | 2019-11-22 | 江苏和正特种装备有限公司 | A kind of plain shaft parallelism calibration system of the multispectral photoelectric detecting system in aperture altogether |
| CN110487514B (en) * | 2019-08-23 | 2024-05-24 | 江苏和正特种装备有限公司 | Optical axis parallelism calibration system of common-aperture multispectral photoelectric detection system |
| CN114326011A (en) * | 2021-12-07 | 2022-04-12 | 华中光电技术研究所（中国船舶重工集团公司第七一七研究所） | System and method for online calibration of optical axis relative errors of multiband common-aperture photoelectric equipment |
| CN114326011B (en) * | 2021-12-07 | 2024-02-23 | 华中光电技术研究所（中国船舶重工集团公司第七一七研究所） | Optical axis relative error online calibration system and method for multiband common-aperture photoelectric device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110487514B (en) | Optical axis parallelism calibration system of common-aperture multispectral photoelectric detection system | |
| CN109100876B (en) | Multi-optical-axis parallel adjusting device and multi-optical-axis parallel adjusting method | |
| CN102353950B (en) | Laser radar optical system with optical axis calibrating function and optical axis calibrating method | |
| CN109374261B (en) | Multi-optical-axis consistency detection equipment and method based on target switching | |
| WO2017041335A1 (en) | Device and method for collaborative moving target detection with imaging and spectrogram detection in full optical waveband | |
| CN105607074B (en) | A kind of beacon adaptive optics system based on pulse laser | |
| WO2016106957A1 (en) | Ultra wide band spectrogram correlation detection device and method | |
| EP1582854A2 (en) | System and method for the measurement of optical distortions | |
| CN210322255U (en) | Optical axis parallelism calibration system of common-aperture multispectral photoelectric detection system | |
| CN106443954A (en) | Optical axis debugging system and method of laser range finder | |
| CN111707449B (en) | Multi-spectral optical axis parallelism testing device and testing method | |
| CN208506390U (en) | Parallelism of optical axis regulating device for multiple light path systems | |
| CN208902871U (en) | A kind of device of rapid survey laser ranging system performance | |
| CN102589605B (en) | Portable type external field equipment for multi-sensor optical axis calibration | |
| CN116429375B (en) | Photoelectric axis pointing consistency calibration method | |
| CN114326011B (en) | Optical axis relative error online calibration system and method for multiband common-aperture photoelectric device | |
| CN113125119A (en) | Off-axis target simulator and method for multi-spectral-band composite photoelectric equipment focusing and axis adjustment | |
| CN105137416B (en) | A kind of EO-1 hyperion laser radar target sample experimental rig and method | |
| CN109655157A (en) | A kind of visible light-infared spectrum detection device and method | |
| CN116519136B (en) | Same-optical-axis adjustment system and method for moon direct spectrum irradiance instrument | |
| Collins et al. | Design and simulation of a sensor for heliostat field closed loop control | |
| AU779584B2 (en) | In-action boresight | |
| CN106610528A (en) | Long-wave infrared and short-wave infrared composite collimation optical system | |
| CN215984574U (en) | Multiband photoelectric tracking and astronomical orientation device | |
| CN113701561B (en) | Airborne multispectral multi-optical-axis photoelectric system aerial dynamic axis correcting device and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200414 Effective date of abandoning: 20240524 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20200414 Effective date of abandoning: 20240524 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |