Optical performance test system for multiband detection assembly

Abstract

The invention belongs to the field of composite optical index detection, and particularly relates to a multi-band detection assembly optical performance test system. By integrating the multi-band signal synthesis module, the target signal containing multiple bands can be provided in a single system, and errors and time consumption caused by successive testing of multiple single-band devices are avoided. And meanwhile, the installation mode of fixing on the focal plane of the optical collimation module eliminates the inconsistency introduced by equipment switching. The optical collimation module converts a signal into multiband parallel light simulating an infinite target, the parallel light can improve the authenticity of a test environment, the integrated projection characteristic of the parallel light enables multiband response data of a tested assembly to be synchronously or rapidly collected, and the analysis rate is remarkably improved. And the control module uniformly controls signals and processes data, so that test automation is realized. In conclusion, according to the scheme, through the integrated design, the problems of low efficiency and poor accuracy of successive testing are fundamentally solved, and the testing efficiency and the result reliability are remarkably improved.

Description

Technical Field

[0001] This application belongs to the field of composite optical index testing, specifically relating to a multi-band detection component optical performance testing system. Background Technology

[0002] With the development of optoelectronic technology and the information-driven demands of modern international affairs, multi-band detection components integrating laser detection, visible light imaging, and infrared imaging have been widely used in various modern precision detection equipment. This has greatly improved the efficiency and capabilities of precision detection equipment, making it a key technology for its development. To achieve accurate target detection and tracking, necessary performance tests must be performed on the detection components before assembly.

[0003] Currently, the performance testing of the optical system of multi-band detection components can only be carried out by testing each band individually with testing equipment, and then testing with testing equipment of another band. After repeated adjustments, the performance testing of each band detection component is carried out. The overall testing process is complicated, and the positioning errors caused by disassembly and assembly will increase the testing difficulty and reduce the accuracy of the test results.

[0004] In addition, the inability to simultaneously test multiple indicators of multi-band detection components significantly extended the testing time, exposing the entire testing process to the drifting effects of environmental factors such as laboratory temperature, humidity, and airflow, further reducing the accuracy of the test results. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this application is to provide a multi-band detection component optical performance testing system, which aims to solve the problem that the current method can only test components sequentially using multiple single-band testing devices, resulting in low accuracy of test results.

[0006] The first aspect of this application relates to a multi-band detection component optical performance testing system, comprising: a control module, a multi-band signal synthesis module, and an optical collimation module; the multi-band signal synthesis module is disposed at the focal plane of the optical collimation module and connected to the optical path of the optical collimation module to maintain the relative positional relationship between the multi-band signal synthesis module, the optical collimation module, and the component under test through a fixed installation; the control module is communicatively connected to the multi-band signal synthesis module; the multi-band signal synthesis module is configured to provide target light signals containing at least two different bands under the control of the control module; the optical collimation module is configured to convert the target light signals into multi-band parallel beams simulating the same infinitely distant target and project them onto the component under test; the control module is used to control the selection and parameters of the target light signals, and also to receive and process the response data generated by the component under test based on the multi-band parallel beams.

[0007] In one embodiment, the optical collimation module includes a primary reflector and a secondary reflector; the secondary reflector is disposed in the reflected light path of the primary reflector; the primary reflector is used to reflect multi-band optical signals from the multi-band signal synthesis module to the secondary reflector for collimation.

[0008] In one embodiment, the primary reflector is a parabolic mirror; the secondary reflector is a plane mirror.

[0009] In one embodiment, the multi-band signal synthesis module includes: a light source unit and a target; the light source unit and a control module are communicatively connected; the beam output end of the light source unit is aligned with the target, and the target is illuminated by at least two light sources to generate a target light signal containing at least two different bands; the target is set at the focal plane of the optical collimation module, so that the target light signal is collimated into a multi-band parallel beam after passing through the primary reflector and the secondary reflector.

[0010] In one embodiment, the multi-band signal synthesis module further includes: a target assembly; the target assembly includes a target wheel and multiple targets; the multiple targets are all mounted on the target wheel; the target wheel is rotatably disposed at the focal plane, and different targets are selected to enter the optical path by rotating the target wheel.

[0011] In one embodiment, the light source unit includes at least two of a blackbody light source, a visible light source, and a laser light source, for simultaneously providing light beams of different wavelengths.

[0012] In one embodiment, the testing system further includes: a turntable module; the turntable module is positioned in the light output direction of the optical collimation module and is communicatively connected to the control module; the turntable module is used to place the component under test and receive motion signals from the control module to adjust the spatial angle of the component under test.

[0013] In one embodiment, the control module includes: a light source control unit, a motion control unit, and a data processing unit; the light source control unit is communicatively connected to the light source unit in the multi-band signal synthesis module; the motion control unit is communicatively connected to the turntable module; the light source control unit is used to control the switching, brightness, and operating parameters of different band light sources in the light source unit; the motion control unit is used to send control commands to the turntable module to adjust the spatial angle of the component under test; the input terminal of the data processing unit is configured to receive the response data generated by the component under test under multi-band parallel beam stimulation, and calculate the performance index based on a preset algorithm.

[0014] In one embodiment, the testing system further includes: a support box; the optical collimation module and the multi-band signal synthesis module are both fixedly installed in the support box; the support box has an entrance hole located on the focal plane and an exit hole for emitting multi-band parallel beams.

[0015] In one embodiment, the bottom of the support box is provided with adjustable feet; the adjustable feet are used to adjust the levelness and height of the system.

[0016] Overall, the technical solutions conceived in this application have the following beneficial effects compared with the prior art: The technical solution proposed in this application, by employing a multi-band signal synthesis module, can provide at least two different bands of target optical signals in one system, thereby avoiding the need to use multiple single-band test devices for successive testing and solving the problem of low test result accuracy caused by device switching and position changes in the prior art.

[0017] Because the multi-band signal synthesis module is located at the focal plane of the optical collimation module and maintains its relative position with the optical collimation module and the component under test through a fixed installation, it ensures the stability and consistency of the optical path and reduces errors introduced by mechanical adjustments during the test. The optical collimation module converts the target light signal into a multi-band parallel beam simulating the same infinitely distant target, making the test environment closer to the actual application scenario and improving the authenticity and reliability of the test. Its integrated projection characteristics enable the multi-band response data of the component under test to be acquired synchronously or rapidly, significantly improving the resolution rate. The control module integrates the selection and parameters of the target light signal and automatically processes the response data of the component under test, realizing the automation and integration of the test process, further improving the test efficiency and accuracy.

[0018] Compared with existing technologies, this solution achieves multi-band synchronous or rapid switching testing through the synergistic effect of the above-mentioned technical means, eliminating the cumulative error in successive tests, thereby significantly improving the accuracy and consistency of test results. Attached Figure Description

[0019] Figure 1 This is a structural block diagram of the optical performance testing system for multi-band detection components provided in the embodiments of this application; Figure 2 This is a structural block diagram of the control module provided in the embodiments of this application; Figure 3 This is a schematic diagram of optical collimation provided in an embodiment of this application; Figure 4 This is a schematic diagram of the physical construction of the multi-band detection component optical performance testing system provided in the embodiments of this application; Figure 5 This is a schematic diagram of the structure of the support box provided in the embodiment of this application; Figure 6 This is a software schematic diagram of the control module provided in an embodiment of this application.

[0020] In all the accompanying drawings, the same reference numerals are used to denote the same elements or structures, wherein: 10 is the control module; 11 is the light source control unit; 12 is the motion control unit; 13 is the data processing unit; 101 is the test instrument; 20 is the multi-band signal synthesis module; 21 is the light source unit; 211 is the differential blackbody; 212 is the laser light source; 22 is the target assembly; 220 is the target wheel; 30 is the optical collimation module; 31 is the main reflector; 32 is the secondary reflector; 40 is the turntable module; 41 is the dual-axis turntable; 50 is the support box; 51 is the mirror cover; 52 is the entrance port; 53 is the box body; 54 is the rear sealing plate; 55 is the adjustable feet; 60 is the optical platform. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0022] In this application, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. In this application, the symbol " / " indicates that the related objects are in an "or" relationship, for example, A / B means A or B.

[0023] In this application, the terms "first" and "second," etc., are used to distinguish different objects, not to describe a specific order of objects. For example, "first response message" and "second response message," etc., are used to distinguish different response messages, not to describe a specific order of response messages.

[0024] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0025] In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more, for example, multiple processing units means two or more processing units, multiple elements means two or more elements, etc.

[0026] The current testing of optical system parameters for multi-band detection components faces numerous severe challenges, significantly hindering testing efficiency and accuracy. The testing process is extremely complex, requiring individual testing of each component using single-band equipment. After completing one band, the equipment must be switched to continue. Furthermore, repeated adjustments to adapt components to different equipment necessitate retesting parameters for each band, resulting in lengthy processes and increased operational difficulty due to repeated disassembly and equipment switching. Positioning errors are a significant issue; repeated disassembly and reassembly inevitably introduce errors that accumulate with each test, increasing testing difficulty, interfering with data accuracy, and reducing the reliability of results. Existing testing methods cannot simultaneously measure multiple parameters, requiring sequential measurements, leading to a lengthy testing cycle. Prolonged testing exposes components to continuous environmental factors such as laboratory temperature, humidity, and airflow, causing drift. Temperature fluctuations affect optical path stability, humidity changes interfere with light propagation, and airflow disturbances cause component misalignment, further reducing the accuracy of test results.

[0027] Based on this, this application proposes an embodiment of a multi-band detection component optical performance testing system. Please refer to... Figure 1 , Figure 1 This is a structural block diagram of the optical performance testing system for multi-band detection components provided in the embodiments of this application.

[0028] In this embodiment, the multi-band detection component optical performance testing system includes: a control module 10, a multi-band signal synthesis module 20, and an optical collimation module 30.

[0029] It should be noted that the multi-band signal synthesis module 20 is located at the focal plane of the optical collimation module 30 and is optically connected to the optical collimation module 30. The relative positional relationship between the multi-band signal synthesis module 20, the optical collimation module 30 and the component under test can be maintained by a fixed installation method; the control module 10 is communicatively connected to the multi-band signal synthesis module 20.

[0030] Understandably, choosing the focal plane position is crucial, as the focal plane is a plane with special optical properties within an optical system. Positioning the multi-band signal synthesis module 20 at this location ensures that its emitted signal achieves optimal collimation when passing through the optical collimation module 30. Furthermore, the multi-band signal synthesis module 20 and the optical collimation module 30 are connected via an optical path, allowing for smooth signal propagation between the two modules.

[0031] Understandably, the fixed installation method ensures that the positions of these three components will not change arbitrarily throughout the entire testing process, thereby avoiding problems such as signal transmission errors and optical alignment deviations caused by position changes. This provides a stable physical basis for accurately testing the optical performance of the multi-band detection component. For example, the control module 10, the multi-band signal synthesis module 20, and the optical collimation module 30 can be fixed on the same platform. Furthermore, this platform can also be installed on an air-bearing or active vibration isolation system to isolate vibrations from the ground or surrounding equipment.

[0032] It is understandable that the control module 10 and the multi-band signal synthesis module 20 are connected by communication. This connection allows the control module 10 to remotely and in real time control the multi-band signal synthesis module 20, such as controlling the wavelength, intensity, frequency and other parameters of the synthesized signal, thereby flexibly adjusting the test conditions to meet different test scenarios and requirements.

[0033] It should be noted that the multi-band signal synthesis module 20 is configured to provide target light signals containing at least two different bands under the control of the control module 10.

[0034] Understandably, the main function of the multi-band signal synthesis module 20 is to synthesize multi-band signals. In testing multi-band detection components, it is necessary to simulate optical signals of different bands to detect the components. The multi-band signal synthesis module 20 can synthesize optical signals of different wavelengths according to certain rules and requirements, generating multi-band composite signals that meet the testing requirements, and then providing these signals to subsequent modules or detection components for testing.

[0035] Understandably, the target light signal generated here must contain at least two different wavelengths. Target light signals of different wavelengths are crucial for comprehensively and accurately testing the optical performance of multi-band detection components. Because in practical applications, multi-band detection components often need to detect and process multiple different wavelengths of light signals simultaneously or sequentially, providing target light signals of at least two different wavelengths during the testing phase can simulate a test environment closer to real-world usage scenarios. This allows for more effective verification of the multi-band detection component's response capability to different wavelengths of light signals, detection accuracy, and other key performance indicators, ensuring its reliable and accurate operation in practical applications.

[0036] It should be noted that the optical collimation module 30 is configured to convert the target light signal into a multi-band parallel beam simulating the same infinitely distant target and project it onto the component under test.

[0037] Understandably, the purpose of optical collimation is to ensure the accurate direction of light propagation. In the testing system, the signal from the multi-band signal synthesis module 20 may have issues such as inaccurate direction or scattering. The optical collimation module 30 corrects and adjusts these signals to ensure that the light propagates in a parallel and accurate direction. This guarantees the accuracy and reliability of the test when the light shines on the multi-band detection component, avoiding deviations in test results due to issues with the direction of the light.

[0038] Understandably, converting the diverse target light signals into multi-band parallel beams simulating the same infinitely distant target is valuable in the field of optical testing. In practical applications, multi-band detection components often need to detect light signals from distant targets, and the characteristics of parallel beams are highly similar to those of light emitted from infinitely distant targets in terms of propagation. By converting the target light signal into such a multi-band parallel beam, the optical collimation module 30 creates a highly realistic testing environment for the component under test.

[0039] Understandably, these multi-band parallel beams simulating the same infinitely distant target are precisely projected onto the component under test, allowing the component to be tested under conditions close to real-world operation. This enables a more accurate and comprehensive evaluation of its performance indicators, such as detection sensitivity, resolution, and spectral response characteristics, when processing optical signals from distant targets in different bands. This provides a reliable basis for the research, development, production, and quality control of multi-band detection components.

[0040] It should be noted that the control module 10 is used to control the selection and parameters of the target light signal, and also to receive and process the response data generated by the component under test according to the multi-band parallel beam.

[0041] Understandably, the control module 10 has a dual function. Firstly, it precisely controls the selection and parameters of the target optical signal. As the source of the test, the characteristics of the target optical signal directly determine the test's relevance and effectiveness. The control module 10 can flexibly select target optical signals with specific band combinations according to different test requirements, and can finely adjust various parameters of these signals, such as light intensity, frequency, and pulse width. This precise control capability enables the test system to simulate various complex and changing optical scenarios, thereby comprehensively and deeply evaluating the performance of multi-band detection components under different conditions.

[0042] Understandably, the control module 10 also bears the important responsibility of receiving and processing the response data of the component under test (DUT). When a multi-band parallel beam simulating the same infinitely distant target is projected onto the DUT, the DUT will generate corresponding response data based on these beams. This data contains key information such as the DUT's ability to detect and process optical signals of different bands. The control module 10 can receive this data in a timely and accurate manner and perform in-depth analysis using algorithms and data processing techniques. Through processing the response data, the control module 10 can extract important performance indicators such as detection sensitivity, spectral resolution, and dynamic range, providing a quantitative basis for evaluating the quality of the DUT.

[0043] In this embodiment, by employing a multi-band signal synthesis module, at least two different bands of target light signals can be provided in one system, thereby avoiding the need to use multiple single-band test devices for successive testing and solving the problem of low test result accuracy caused by device switching and position changes in the prior art.

[0044] Because the multi-band signal synthesis module is located at the focal plane of the optical collimation module and maintains its relative position with the optical collimation module and the component under test through a fixed installation, it ensures the stability and consistency of the optical path and reduces errors introduced by mechanical adjustments during the test. The optical collimation module converts the target light signal into a multi-band parallel beam simulating the same infinitely distant target, making the test environment closer to the actual application scenario and improving the authenticity and reliability of the test. Its integrated projection characteristics enable the multi-band response data of the component under test to be acquired synchronously or rapidly, significantly improving the resolution rate. The control module integrates the selection and parameters of the target light signal and automatically processes the response data of the component under test, realizing the automation and integration of the test process, further improving the test efficiency and accuracy.

[0045] Compared with existing technologies, this solution achieves multi-band synchronous or rapid switching testing through the synergistic effect of the above-mentioned technical means, eliminating the cumulative error in successive tests, thereby significantly improving the accuracy and consistency of test results.

[0046] Furthermore, based on the above embodiments, this application makes improvements to the system. Please refer to... Figure 2 , Figure 2 This is a structural block diagram of the control module provided in the embodiments of this application.

[0047] In this embodiment, the testing system further includes a turntable module 40; the turntable module 40 is located in the light output direction of the optical collimation module 30 and is communicatively connected to the control module 10; the turntable module 40 is used to place the component under test and receive motion signals from the control module 10 to adjust the spatial angle of the component under test.

[0048] Understandably, the arrangement of the turntable module 40 in the system along the light output direction of the optical collimation module 30 is a deliberate design. After the optical collimation module 30 converts the target light signal into a multi-band parallel beam simulating the same infinitely distant target, these beams will be emitted along a specific direction. The turntable module 40 is precisely located on this beam propagation path, enabling the component under test placed on it to accurately receive these parallel beams, thus facilitating subsequent testing.

[0049] Understandably, the turntable module 40 has two main functions: first, it provides a stable and suitable platform for the component under test (DUT), ensuring that the DUT maintains a relatively fixed position during testing and avoiding instability that could affect the accuracy of the test results; second, the turntable module 40 can receive motion signals from the control module 10. The control module 10 sends specific motion commands to the turntable module 40 according to the test requirements. Upon receiving these commands, the turntable module 40 precisely adjusts the spatial angle of the DUT. By changing the spatial angle of the DUT, the situation of light signals illuminating the DUT at different incident angles can be simulated, thereby comprehensively and thoroughly testing the optical performance of the DUT at different angles, such as detection sensitivity and spectral response characteristics.

[0050] In this embodiment, the multi-band signal synthesis module 20 includes: a light source unit 21 and a target; the light source unit 21 is communicatively connected to the control module 10; the beam output end of the light source unit 21 is aligned with the target, and the target is illuminated by at least two light sources to generate a target light signal containing at least two different bands; the target is set at the focal plane of the optical collimation module 30, so that the target light signal is collimated into a multi-band parallel beam after passing through the primary reflector 31 and the secondary reflector 32.

[0051] It is understandable that the light source unit 21 maintains a communication connection with the control module 10, meaning that the control module 10 can precisely regulate its operating state. For example, the control module 10 can send commands to the light source unit 21 according to a preset test plan to control its on or off state, and can also adjust parameters such as the brightness and emission frequency of the light source. The beam output end of the light source unit 21 is carefully aligned with the target. This precise alignment design ensures that the beam emitted by the light source can illuminate the target without deviation. Moreover, in order to generate target light signals containing at least two different wavelengths, the light source unit 21 uses at least two different types of light sources, such as a blackbody light source, a visible light source, and a laser light source 212. Different types of light sources have their own unique spectral characteristics. When they illuminate the target simultaneously, through the interaction and modulation of the target, they synthesize light signals containing multiple different wavelengths, providing a rich variety of optical inputs for subsequent tests.

[0052] Understandably, the target also plays an indispensable role in the multi-band signal synthesis module 20. When the target is at the focal plane, the target light signal that is irradiated by the light source unit 21 and reflected or transmitted will propagate along a specific optical path.

[0053] Furthermore, the multi-band signal synthesis module 20 may also include a target assembly 22. The target assembly 22 includes a target wheel 220 and multiple targets; the multiple targets are all mounted on the target wheel 220; the target wheel 220 is rotatably disposed at the focal plane, and different targets are selected to enter the optical path by rotating the target wheel 220.

[0054] Understandably, each target plate is installed within the reticle frame. Through subsequent adjustments, each target plate is positioned at the focal plane after assembly, and the synchronous digital rotating target wheel 220 enables target plate replacement. By using this rotating target wheel 220 to select different targets entering the optical path, the multi-band signal synthesis module 20 can flexibly and quickly generate various target optical signals with different characteristics. Compared to a single target only producing a fixed characteristic optical signal, this design greatly enriches the types of target optical signals that the testing system can provide. This rotational selection can be implemented by the control module 10 or manually, increasing flexibility.

[0055] In this embodiment, please refer to Figure 3 , Figure 3 This is a schematic diagram of optical collimation provided in an embodiment of this application. The optical collimation module 30 includes: a primary reflector 31 and a secondary reflector 32; the secondary reflector 32 is disposed on the reflected light path of the primary reflector 31; the primary reflector 31 is used to reflect the multi-band optical signal from the multi-band signal synthesis module 20 to the secondary reflector 32 for collimation.

[0056] Understandably, the target light signal will then undergo multiple reflections and calibrations through the primary reflector 31 and secondary reflector 32 in the optical collimation module 30. The primary reflector 31 and secondary reflector 32 can precisely adjust the target light signal through precise surface design and relative position arrangement, eliminating light divergence and deflection, and ultimately collimating the target light signal into a multi-band parallel beam.

[0057] Specifically, the primary reflector 31 is a parabolic mirror, and the secondary reflector 32 is a planar reflector. By receiving the reflected light path from the primary mirror and redirecting the light path, and placing the image plane on the opposite side of the secondary mirror, the overall length of the system can be effectively reduced, making it easier for later debugging and use.

[0058] In this embodiment, the control module 10 includes a light source control unit 11, a motion control unit 12, and a data processing unit 13. The light source control unit 11 is communicatively connected to the light source unit 21 in the multi-band signal synthesis module 20; the motion control unit 12 is communicatively connected to the turntable module 40.

[0059] It should be noted that the light source control unit 11 is used to control the switching, brightness, and operating parameters of different wavelength light sources in the light source unit 21. The motion control unit 12 is used to send control commands to the turntable module 40 to adjust the spatial angle of the component under test. The input terminal of the data processing unit 13 is configured to receive the response data generated by the component under test under multi-wavelength parallel beam stimulation, and calculate the performance indicators based on a preset algorithm.

[0060] For example, when testing a new type of infrared multi-band detection component, the optical performance test of the component was fully completed by precisely controlling the light source control unit 11 to generate infrared light signals of specific bands and intensities, the motion control unit 12 to make the turntable move the component to simulate different pitch and azimuth angles, and the data calculation unit 13 to quickly analyze the component response data to obtain indicators such as detection sensitivity.

[0061] In this embodiment, by precisely controlling the light source control unit, motion control unit, and data processing unit respectively, this multi-band detection component optical performance testing system achieves several key functions. The light source control unit ensures that the light source unit can generate light signals with specific characteristics as needed; the motion control unit enables the turntable module to flexibly adjust the spatial angle of the component under test to simulate various real-world scenarios; and the data processing unit can efficiently process response data and calculate performance indicators, realizing comprehensive and high-precision testing of the system.

[0062] Based on the above embodiments, this application provides an implementation method for entity construction. Please refer to... Figure 4 , Figure 4 This is a schematic diagram of the physical construction of the multi-band detection component optical performance testing system provided in the embodiments of this application.

[0063] In this embodiment, the control module 10 uses a professional testing instrument 101. This testing instrument 101 possesses powerful data processing capabilities and precise control functions, enabling efficient communication with other modules in the system. It can not only precisely control the light source unit 21 and the turntable module 40, but also quickly receive and analyze the response data from the component under test, providing core control support for the stable operation and accurate testing of the entire testing system.

[0064] In this embodiment, the turntable module 40 is a dual-axis turntable 41. The dual-axis turntable 41 has two independent rotation axes, which can realize rotation in the horizontal and vertical directions respectively. This design allows the component under test placed on the turntable to be flexibly adjusted in three-dimensional space, thereby simulating the incident angle of light under various practical application scenarios, and providing a reliable guarantee for comprehensively evaluating the optical performance of the component under test at different angles.

[0065] In this embodiment, the light source unit 21 is a combination of a differential blackbody 211 and a laser light source 212. The differential blackbody 211 can generate stable and continuous broadband thermal radiation light, providing a basic light source background for testing; while the laser light source 212 has advantages such as good monochromaticity, high brightness, and strong directionality, and can generate laser beams of specific wavelengths. By combining the differential blackbody 211 and the laser light source 212, various optical signals with different characteristics can be generated to meet the diverse testing needs of multi-band detection components.

[0066] Further, please refer to Figure 5 , Figure 5 This is a schematic diagram of the structure of the support box provided in the embodiment of this application.

[0067] In this embodiment, the optical collimation module 30 is fixedly installed inside the support housing 50. The support housing has an entrance aperture located at the focal plane and an exit aperture for emitting multi-band parallel beams. The multi-band signal synthesis module 20 is fixedly mounted on the outer surface of the support housing 50 around the entrance aperture. The support housing 50 is made of high-strength, high-stability materials, possessing excellent sealing and shock resistance, effectively protecting the internal optical components from interference and damage from the external environment.

[0068] Understandably, the entrance aperture 52 is positioned at the focal plane to minimize light aberrations and energy loss, providing high-quality light input for subsequent optical processing and testing. The exit aperture plays a crucial role in guiding the multi-band parallel beam generated after processing by the optical collimation module 30 out of the support housing 50 and projecting it onto the component under test.

[0069] Understandably, to effectively protect the light output aperture and prevent dust, debris, and other contaminants from entering the enclosure and polluting the optical components, while also avoiding accidental light leakage that could affect the surrounding environment and personnel during non-testing periods, a lens cover 51 is specifically designed for the light output aperture. The lens cover 51 employs a high-precision, high-sealing design, allowing it to be easily opened when testing is required, enabling the smooth emission of multi-band parallel beams; after testing, it can be tightly closed, creating a clean and safe environment inside the enclosure.

[0070] Understandably, the rear of the support housing 50 is designed with an openable rear cover 54. During the setup, debugging, and long-term use of the test system, the internal optical components may require readjustment and optimization due to various reasons, such as initial installation errors, minor displacements caused by environmental factors, and optical path adjustments made according to different test requirements. The openable rear cover 54 provides operators with a convenient access point.

[0071] Meanwhile, adjustable feet 55 are provided at the bottom of the support box 50. Adjustable feet 55 are support components with height adjustment capabilities, typically consisting of a base, adjusting screws, and locking devices. In this testing system, the adjustable feet 55 are evenly distributed at the four bottom corners of the support box 50, providing stable and reliable support for the entire support box 50 and also allowing for some degree of level adjustment.

[0072] In this embodiment, both the support housing 50 and the dual-axis turntable 41 are mounted on the optical platform 60. The optical platform 60 features high flatness, good rigidity, and good thermal stability, providing a stable foundation support environment for the entire testing system. The rational layout of the support housing 50 and the dual-axis turntable 41 on the optical platform 60 ensures smoother optical path transmission, reduces light scattering and loss, and also facilitates the operator's debugging and maintenance of the testing system.

[0073] In addition, please refer to Figure 6 , Figure 6 This is a software schematic diagram of the control module provided in an embodiment of this application. It can be based on... Figure 6 The interface shown is used for software design. Specifically, the left side of the interface is a function navigation bar, which includes Noise Equivalent Temperature Difference (NETD), Minimum Resolvable Temperature Difference (MRTD), Minimum Detectable Temperature Difference (MDTD), Modulation Transfer Function (MTF), Uniformity, Field of View (FOV), and Distortion.

[0074] Understandably, the "FOV" is currently selected. The right side is mainly divided into areas for field of view setting adjustment, display, data, and operation functions. In the setting adjustment area, users can set values ​​for horizontal and vertical angles, perform zeroing operations, and record and clear previously recorded angle data. The field of view display area shows "#####" when data is not updated, and displays the specific value after calculation. The data and operation area supports saving images and data, performing calculations, and controlling the start and stop of the video stream. The overall interface design is simple, with clear functional divisions, facilitating precise operation and settings of the testing system.

[0075] In this embodiment, by rationally arranging the positions of each device, high precision and low loss of optical path transmission in the optical performance testing system for multi-band detection components are achieved, significantly improving the accuracy and reliability of the test results.

[0076] It should be understood that expressions such as “comprising” and “may include” used in this application indicate the existence of the disclosed functions, operations, or constituent elements, and do not limit one or more additional functions, operations, and constituent elements. In this application, terms such as “comprising” and / or “having” are to be interpreted as indicating a particular characteristic, number, operation, constituent element, component, or combination thereof, but not to exclude the existence or possibility of adding one or more other characteristics, numbers, operations, constituent elements, components, or combinations thereof.

[0077] Furthermore, in this application, the expression "and / or" includes any and all combinations of the associated listed words. For example, the expression "A and / or B" may include A, may include B, or may include both A and B.

[0078] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. "Fixed connection" refers to a connection where the relative positional relationship remains unchanged after connection. "Rotary connection" refers to a connection where the components can rotate relative to each other after connection. "Sliding connection" refers to a connection where the components can slide relative to each other after connection. The directional terms mentioned in the embodiments of this application, such as "top," "bottom," "inner," "outer," "left," and "right," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this application, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0079] Furthermore, the mathematical concepts mentioned in the embodiments of this application, such as symmetry, equality, parallelism, and perpendicularity, are limitations specific to the current technological level, rather than absolute and strict mathematical definitions. Slight deviations are permissible; approximations of symmetry, equality, parallelism, and perpendicularity are all acceptable. For example, "A and B are parallel" means that A and B are parallel or approximately parallel, and the angle between A and B can be between 0 and 10 degrees. "A and B are perpendicular" means that A and B are perpendicular or approximately perpendicular, and the angle between A and B can be between 80 and 100 degrees.

[0080] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A testing system for the optical performance of a multi-band detection component, characterized in that, include: Control module, multi-band signal synthesis module, and optical collimation module; The multi-band signal synthesis module is positioned at the focal plane of the optical collimation module and is connected to the optical path of the optical collimation module to maintain the relative positional relationship between the multi-band signal synthesis module, the optical collimation module, and the component under test through a fixed installation method; the control module is communicatively connected to the multi-band signal synthesis module. The multi-band signal synthesis module is configured to provide target light signals containing at least two different bands under the control of the control module. The optical collimation module is configured to convert the target light signal into a multi-band parallel beam simulating the same infinity target and project it onto the component under test. The control module is used to control the selection and parameters of the target light signal, and also to receive and process the response data generated by the component under test according to the multi-band parallel beam.

2. The optical performance testing system for multi-band detection components as described in claim 1, characterized in that, The optical collimation module includes: a primary mirror and a secondary mirror; The secondary reflector is disposed on the reflected light path of the primary reflector; The primary reflector is used to reflect the multi-band optical signals from the multi-band signal synthesis module to the secondary reflector for collimation.

3. The multi-band detection component optical performance testing system as described in claim 2, characterized in that, The primary reflector is a parabolic mirror; the secondary reflector is a plane mirror.

4. The optical performance testing system for multi-band detection components as described in claim 2, characterized in that, The multi-band signal synthesis module includes: a light source unit and a target; the light source unit and the control module are communicatively connected. The beam output end of the light source unit is aligned with the target, and the target is illuminated by at least two light sources to generate target light signals containing at least two different wavelengths. The target is positioned at the focal plane of the optical collimation module, so that the target light signal is collimated into a multi-band parallel beam after passing through the primary and secondary reflectors.

5. The optical performance testing system for multi-band detection components as described in claim 4, characterized in that, The multi-band signal synthesis module also includes: a target component; The target assembly includes a target wheel and multiple targets; The multiple targets are all mounted on the target wheel; the target wheel is rotatably positioned at the focal plane, and different targets are selected to enter the optical path by rotating the target wheel.

6. The optical performance testing system for multi-band detection components as described in claim 4, characterized in that, The light source unit includes at least two of the following: a blackbody light source, a visible light source, and a laser light source, for simultaneously providing light beams of different wavelengths.

7. The optical performance testing system for multi-band detection components as described in claim 4, characterized in that, The testing system also includes: a turntable module; The turntable module is positioned in the light-emitting direction of the optical collimation module and is communicatively connected to the control module. The turntable module is used to place the component under test and to receive motion signals from the control module to adjust the spatial angle of the component under test.

8. The optical performance testing system for multi-band detection components as described in claim 7, characterized in that, The control module includes: a light source control unit, a motion control unit, and a data processing unit; The light source control unit is communicatively connected to the light source unit in the multi-band signal synthesis module; the motion control unit is communicatively connected to the turntable module. The light source control unit is used to control the switching, brightness, and operating parameters of different wavelength light sources in the light source unit; the motion control unit is used to send control commands to the turntable module to adjust the spatial angle of the component under test; the input terminal of the data calculation unit is configured to receive the response data generated by the component under test under the stimulation of the multi-wavelength parallel beam, and calculate the performance index based on the preset algorithm.

9. The optical performance testing system for multi-band detection components as described in claim 1, characterized in that, The testing system also includes: a support housing; Both the optical collimation module and the multi-band signal synthesis module are fixedly installed inside the support box. The support box is provided with an entrance hole located on the focal plane and an exit hole for emitting the multi-band parallel beam.

10. The optical performance testing system for multi-band detection components as described in claim 9, characterized in that, The bottom of the support box is equipped with adjustable feet; the adjustable feet are used to adjust the level and height of the system.

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