Roll-pitch photoelectric load optical axis parallel consistency detection method
By building an optical axis detection optical path, using equipment such as cubic prisms and self-collimating theodolites, the problem that traditional detection methods cannot accurately judge the optical axis deviation of the rolling upward photoelectric load is solved, and accurate detection and reset of parallel consistency of the optical axis is achieved.
Patent Information
- Application Number
- CN202510423693.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2025-07-25
AI Technical Summary
Traditional detection methods cannot accurately judge the degree of deviation of the optical axis of the rolling-up photoelectric load, especially in the case of miniaturized design and pre-installation, it is difficult to judge the degree of deviation of the optical axis in the up and down and left and right directions.
The optical axis detection optical path is built using cubic prisms, off-axis reflective parallel light tubes, self-collecting theodolites and other equipment. The self-collecting theodolite and the cubic prism are self-collecting to ensure that the optical axis is uniquely determined, and the image characteristics of the thermal image sight and laser illuminator are used to judge the optical axis deviation.
It realizes parallel consistency detection of the optical axis of the rolling-up photoelectric load before and after various environmental tests, ensuring the accurate direction of the optical axis, simplifying the detection process, and accurately determining the direction and degree of the optical axis deviation.
Smart Images
Figure CN120369274A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of the detection of the parallel consistency of the optical axes of a roll-and-pitch type optoelectronic payload, and particularly relates to a method for detecting the parallel consistency of the optical axes of a roll-and-pitch type optoelectronic payload. Background Art
[0002] The roll-and-pitch type optoelectronic payload is equipped with a thermal imaging sight and a laser rangefinder / illuminator, enabling the roll-and-pitch type optoelectronic payload to have the function of guiding and striking targets. The parallel consistency of the optical axes of the thermal imaging sight and the laser rangefinder / illuminator is an extremely important index parameter. Only when the parallel consistency of the optical axes of the thermal imaging sight and the laser rangefinder / illuminator meets the requirements can the consistency of the tracking, aiming, and ranging of optoelectronic devices be ensured, and the accuracy when tracking and irradiating targets be guaranteed. Therefore, usually after the environmental test of the roll-and-pitch type optoelectronic payload, the optical axes of the roll-and-pitch type optoelectronic payload will deviate. Therefore, after the test, it is necessary to detect the parallel consistency of the optical axes of the thermal imaging sight and the laser rangefinder / illuminator to accurately determine whether the deviation of the optical axis of the thermal imaging sight or the laser rangefinder / illuminator affects the parallel consistency of the optical axes, give the deviation direction and degree, and provide a basis for optimizing the roll-and-pitch type optoelectronic payload.
[0003] Due to the requirements of miniaturization of the roll-and-pitch type optoelectronic payload, an integrated and compact design is usually adopted and it is pre-mounted on a flight platform. First, since its working rotation is a roll frame and a pitch frame, the traditional method for detecting the parallel consistency of the optical axes cannot fix the optical axis direction of the roll-and-pitch type optoelectronic payload, resulting in the inability to accurately determine the degree of optical axis deviation; second, since the roll-and-pitch type optoelectronic payload is pre-mounted, image rotation will occur when the thermal imaging sight observes the target, and it is very difficult to accurately determine the degree of optical axis deviation in the up-down and left-right directions during the detection process. Summary of the Invention
[0004] The purpose of the present invention is to solve the problem that due to the installation characteristics and working characteristics of the roll-and-pitch type optoelectronic payload, the traditional detection method cannot accurately determine the degree of optical axis deviation of the roll-and-pitch type optoelectronic payload, and to provide a method for detecting the parallel consistency of the optical axes of a roll-and-pitch type optoelectronic payload.
[0005] To achieve the above purpose, the technical solution provided by the present invention is as follows:
[0006] A method for detecting the parallel consistency of the optical axes of a roll-and-pitch type optoelectronic payload, comprising the following steps:
[0007] Step 1: Assembly of the laser rangefinder / illuminator, the thermal imaging sight, the right-angle prism, and the roll-and-pitch type optoelectronic payload:
[0008] Install the laser rangefinder / illuminator and the thermal imaging sight at corresponding positions on the housing of the roll-and-pitch type optoelectronic payload, and install the right-angle prism on the same installation plane as the laser rangefinder / illuminator and close to the laser rangefinder / illuminator;
[0009] Step 2: Build a detection optical path:
[0010] Step 2.1: Install the assembled roll-pitch optoelectronic payload on the top of the tooling rack, and place the tooling rack, the target surface rack with an optical bench, the off-axis reflective collimator, the illumination light source, and the autocollimation theodolite on the same optical platform; adjust the roll frame of the roll-pitch optoelectronic payload to a first preset angle, and adjust the pitch frame of the roll-pitch optoelectronic payload to a second preset angle, so that the laser rangefinder and the thermal imaging sight of the roll-pitch optoelectronic payload face the off-axis reflective collimator;
[0011] Step 2.2: First, fix the laser target paper with a small hole in the center on the center of the target surface rack with an optical bench, and then place the target surface rack with an optical bench between the roll-pitch optoelectronic payload and the off-axis reflective collimator, and make the target surface with an optical bench be in the focal plane of the off-axis reflective collimator;
[0012] Step 2.3: Place the illumination light source beside the target surface rack with an optical bench to irradiate the small hole in the center of the laser target paper, so that a temperature difference is generated between the edge and the center of the small hole on the laser target paper;
[0013] Step 2.4: Set up the autocollimation theodolite on one side perpendicular to the optical axis direction of the roll-pitch optoelectronic payload, and make the autocollimation theodolite aim at the side end face of the cube prism;
[0014] Step 3: Detect the parallelism and consistency of the optical axis of the roll-pitch optoelectronic payload before the test: Adjust the angles of the roll frame and the pitch frame of the roll-pitch optoelectronic payload to make the center of the thermal image crosshair in the thermal image coincide with the center of the small hole image on the laser target paper, and make the center of the laser spot image formed by the laser rangefinder coincide with the center of the small hole image on the laser target paper;
[0015] Step 4: Use the autocollimation theodolite and the cube prism for autocollimation to fix the optical axis direction of the roll-pitch optoelectronic payload, record the angles of the roll frame and the pitch frame of the roll-pitch optoelectronic payload, and mark the placement position of the tooling rack on the optical platform;
[0016] Step 5: Reset the optical axis direction of the roll-pitch optoelectronic payload after the test:
[0017] Step 6: Detect the parallelism and consistency of the optical axis of the thermal imaging sight after the test:
[0018] Step 6.1: Perform thermal imaging focusing operation on the roll-pitch optoelectronic payload to make the small hole image in the thermal image clearly visible;
[0019] Step 6.2: Observe the positional relationship between the center of the thermal imaging crosshair and the center of the small hole image in the thermal imaging image to judge the parallel consistency of the optical axis of the thermal imaging sight: If the center of the thermal imaging crosshair coincides with the center of the small hole image, it indicates that the optical axis of the thermal imaging sight has not shifted after the test; if the center of the thermal imaging crosshair is shifted left or right relative to the center of the small hole image, it indicates that the optical axis of the thermal imaging sight has shifted up and down in the vertical direction of the roll-pitch type optoelectronic payload, and the magnitude of the shift represents the degree of optical axis shift; if the center of the thermal imaging crosshair is shifted up and down relative to the center of the small hole image, it indicates that the optical axis of the thermal imaging sight has shifted right and left in the horizontal direction of the roll-pitch type optoelectronic payload, and the magnitude of the shift represents the degree of optical axis shift.
[0020] Step 7: Detection of the parallel consistency of the optical axis of the laser illuminator after the test:
[0021] Step 7.1: Start the laser illuminator to emit laser light, and turn off the laser illuminator after a few seconds. The laser leaves a laser spot on the laser target paper, and a clear laser spot image appears on the thermal imaging image.
[0022] Step 7.2: Observe the positional relationship between the center of the laser spot image and the center of the small hole image to judge the parallel consistency of the optical axis of the laser illuminator after the test: If the center of the laser spot image coincides with the center of the small hole image, it indicates that the optical axis of the laser illuminator has not shifted after the test; if the center of the laser spot image is shifted left or right relative to the center of the small hole image, it indicates that the optical axis of the laser illuminator has shifted up and down in the vertical direction of the roll-pitch type optoelectronic payload, and the magnitude of the shift represents the degree of optical axis shift of the laser illuminator; if the center of the laser spot image is shifted up and down relative to the center of the small hole image, it indicates that the optical axis of the laser illuminator has shifted right and left in the horizontal direction of the roll-pitch type optoelectronic payload, and the magnitude of the shift represents the degree of optical axis shift of the laser illuminator.
[0023] Further, in the step 2.1, adjust the roll angle of the roll-pitch type optoelectronic payload so that the roll frame is in the vertical direction; adjust the pitch angle of the roll-pitch type optoelectronic payload so that the pitch frame is in the horizontal direction.
[0024] Further, in the step 2.2, the diameter of the small hole at the center of the laser target paper is smaller than the diameter of the laser spot formed by the laser emitted by the laser illuminator on the laser target paper.
[0025] Further, in the step 2.4, the horizontal distance between the position where the autocollimation theodolite is set and the roll-pitch type optoelectronic payload is 30 cm to 40 cm.
[0026] Further, in the step 3, the process of detecting the parallel consistency of the optical axis of the roll-pitch type optoelectronic payload before the test is as follows:
[0027] Step 3.1: Start the operation of the roll-and-pitch optoelectronic load. Observe the laser target paper on the target surface with the optical bench through the thermal imaging sight and the off-axis reflective collimator, and perform thermal imaging focusing operation to make the small hole on the laser target paper clearly presented in the thermal imaging image, forming a small hole image.
[0028] Step 3.2: Adjust the angles of the roll frame and the pitch frame of the roll-and-pitch optoelectronic load to make the center of the thermal imaging crosshair in the thermal imaging image coincide with the center of the small hole image in the thermal imaging image.
[0029] Step 3.3: Start the laser illuminator to emit laser, and turn off the laser illuminator after a few seconds; the laser forms a laser spot on the laser target paper, and the center of the laser spot coincides with the center of the small hole on the laser target paper; the laser spot is clearly presented as a laser spot image in the thermal imaging image; complete the detection of the parallel consistency of the optical axis of the roll-and-pitch optoelectronic load.
[0030] Further, in the said Step 4, the method for fixing the optical axis of the roll-and-pitch optoelectronic load by using a self-collimating theodolite is as follows:
[0031] Start the self-collimating theodolite, adjust the azimuth and pitch angles of the self-collimating theodolite to make the crosshair of the self-collimating theodolite itself coincide with the divided crosshair image reflected back by the cube prism, and complete the self-collimation of the cube prism mirror surface and the optical axis of the self-collimating theodolite.
[0032] Further, between Step 4 and Step 5, there is also a step of conducting the environmental adaptability test of the roll-and-pitch optoelectronic load:
[0033] Remove the tooling rack equipped with the roll-and-pitch optoelectronic load from the optical platform, and conduct the environmental adaptability test on the roll-and-pitch optoelectronic load according to the product test technical requirements.
[0034] Further, in the said Step 5, the process of resetting the optical axis pointing of the roll-and-pitch optoelectronic load after the test is as follows:
[0035] Step 5.1: Place the tooling rack equipped with the roll-and-pitch optoelectronic load back on the optical platform according to the installation position marked in Step 4.
[0036] Step 5.2: Start the operation of the roll-and-pitch optoelectronic load, and adjust the roll frame and the pitch frame of the roll-and-pitch optoelectronic load to the angles recorded in Step 4.
[0037] Step 5.3: Fine-tune the position of the tooling rack, the angles of the roll frame and the pitch frame of the roll-and-pitch optoelectronic load to make the crosshair of the self-collimating theodolite itself coincide with the divided crosshair image reflected back by the cube prism; complete the reset of the optical axis pointing of the roll-and-pitch optoelectronic load.
[0038] The advantages of the present invention are:
[0039] 1. The present invention adhesively attaches a cube prism to the front end face of the middle housing of a roll-pitch optoelectronic payload. During detection, the roll frame is rotated to near 90° (vertical direction), and the pitch frame is located near 0° (horizontal direction) to achieve decoupling during rotation in the roll and pitch directions. Self-collimation is performed between a theodolite and the cube prism to ensure that the optical axis pointing direction of the roll-pitch optoelectronic payload is uniquely determined, solving the problem that the traditional method cannot fix the optical axis pointing of the roll-pitch optoelectronic payload, and ensuring that the optical axes of the roll-pitch optoelectronic payload are parallel and consistent before and after various environmental tests and meet the index requirements.
[0040] 2. In the detection method of the present invention, the optical axis of the thermal imaging sight is represented by the image crosshair output by it, and the optical axis of the laser illuminator is represented by the focused spot of the laser emitted by the laser illuminator passing through an off-axis reflective collimator. After the test, according to the positional relationship between the center of the thermal imaging crosshair and the center of the laser spot image and the center of the small hole image on the set laser target paper, the deviation direction and degree of the optical axes of the thermal imaging sight and the laser illuminator are accurately judged, and the detection process is simple.
[0041] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0042] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, wherein:
[0043] Figure 1 is a flow block diagram of the method for detecting the parallelism and consistency of the optical axes of the roll-pitch optoelectronic payload of the present invention;
[0044] Figure 2 is a front view of the assembly of the cube prism, thermal imaging sight, and laser illuminator on the housing of the roll-pitch optoelectronic payload of the present invention;
[0045] Figure 3 is a side view of the assembly of the cube prism, thermal imaging sight, and laser illuminator in the housing of the roll-pitch optoelectronic payload mounted on a tooling rack of the present invention;
[0046] Figure 4 is a schematic diagram of the layout position of the detection optical path and detection equipment of the present invention;
[0047] Figure 5 is a schematic diagram of the laser target paper image mark on the thermal imaging image when detecting that the parallelism and consistency of the optical axes of the roll-pitch optoelectronic payload meet the standard before the test;
[0048] Figure 6 is a schematic diagram of the laser target paper image mark on the thermal imaging image when the optical axis of the thermal imaging sight is offset after the test;
[0049] Figure 7It is a schematic diagram of the laser target paper image mark on the thermal imaging image when the optical axis of the laser illuminator is offset after the test.
[0050] In the figure: 1 - Roll - pitch optoelectronic payload, 2 - Laser illuminator, 3 - Thermal imaging sight, 4 - Right - angled prism, 5 - Tooling rack, 6 - Off - axis reflective collimator, 7 - Target surface holder with optical bench, 8 - Illumination light source, 9 - Autocollimation theodolite, 10 - Small - hole image, 11 - Thermal imaging crosshair, 12 - Laser spot image, 13 - Laser target paper image. Specific implementation mode
[0051] The embodiments of the present invention will be described in detail below. The embodiments are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.
[0052] Refer to Figure 1 , the embodiment of the present invention provides a method for detecting the parallel consistency of the optical axes of a roll - pitch optoelectronic payload.
[0053] Step 1: Installation of the laser illuminator 2, thermal imaging sight 3, right - angled prism 4 and roll - pitch optoelectronic payload 1.
[0054] Install both the thermal imaging sight and the laser illuminator at the corresponding positions in the middle of the housing of the roll - pitch optoelectronic payload. Taking the middle of the housing as the reference of the roll - pitch optoelectronic payload, on the front plane of the middle housing, bond the right - angled prism 4 to the front end face of the middle of the housing of the roll - pitch optoelectronic payload with 502 quick - drying glue or other adhesives. Rotate the roll - pitch frame of the roll - pitch optoelectronic payload clockwise to near 90° (vertical direction), and the pitch frame is near 0° (horizontal direction), as Figure 2 shown; after the bonding of the right - angled prism is completed, pre - install the roll - pitch optoelectronic payload 1 on one side of the top of the tooling rack 5, as Figure 3 shown.
[0055] Step 2: Set up the detection equipment and construct the detection optical path
[0056] Place the tooling rack 5 with the roll - pitch optoelectronic payload, the target surface holder 7 with an optical bench, the off - axis reflective collimator 8, the illumination light source 8 and the autocollimation theodolite 9 on the same optical platform.
[0057] First, direct the thermal imaging sight and laser rangefinder of the roll-and-pitch optoelectronic payload towards the off-axis reflective collimator 6. Then, place the target surface holder 7 with an optical bench at the focus of the off-axis reflective collimator. Fix a laser target paper on the target surface, and use a needle to pierce a small hole in the center of the laser target paper. The diameter of the small hole should be smaller than the diameter of the laser spot image formed by the laser emitted by the laser rangefinder. Place the illumination light source 8 beside the target surface holder with an optical bench to irradiate the small hole in the center of the laser target paper, so as to generate a temperature difference between the edge and the center of the small hole on the laser target paper. Set up an autocollimation theodolite 9 on one side perpendicular to the optical axis direction of the roll-and-pitch optoelectronic payload, so that it can observe one end face of the cube prism. Specifically, the horizontal distance from the autocollimation theodolite 9 to the roll-and-pitch optoelectronic payload is about 30 - 40 cm, as Figure 4 shown.
[0058] Step 3: Detection of the parallelism and consistency of the optical axis before the test
[0059] Power on the roll-and-pitch optoelectronic payload. The thermal imaging sight of the roll-and-pitch optoelectronic payload observes the laser target paper at the focal plane of the off-axis reflective collimator through the off-axis reflective collimator, performs thermal imaging focusing operation on the roll-and-pitch optoelectronic payload to form an image of the laser target paper 13, and makes the small hole image 10 at the center of the laser target paper image on the thermal image clear. Adjust the roll frame and pitch frame of the roll-and-pitch optoelectronic payload so that the center of the thermal imaging crosshair 11 on the thermal image presses on the exact center of the small hole image 10. Turn on the laser ranging mode, stop the laser emission after a few seconds of laser emission, and the laser leaves a laser spot image 12 on the laser target paper. At this time, the center of the laser spot image coincides with the exact center of the small hole, the parallelism and consistency of the optical axes of the laser rangefinder and the thermal imaging sight meet the standard, and the centers of the thermal imaging crosshair, the small hole image, and the laser spot image on the thermal image coincide, as Figure 5 shown.
[0060] Step 4: Fix the optical axis direction of the roll-and-pitch optoelectronic payload before the test.
[0061] Align the autocollimation theodolite 9 with the side end face of the cube prism 4 bonded in Step 1, and adjust the azimuth and pitch of the autocollimation theodolite to make the end face of the cube prism self-collimate with the optical axis of the autocollimation theodolite, that is, make the crosshair of the autocollimation theodolite itself coincide with the divided crosshair image reflected by the cube prism, to achieve self-collimation and complete the fixation of the optical axis direction of the roll-and-pitch optoelectronic payload. At the same time, record the angles of the roll frame and pitch frame of the roll-and-pitch optoelectronic payload, and use a marker pen to mark the placement position of the bottom of the tooling frame on the optical platform on the optical platform.
[0062] After completing Step 4, remove the roll-and-pitch optoelectronic payload and the tooling frame from the optical platform, and select one of high and low temperature, vibration, shock, etc. according to the product technical requirements to conduct the environmental adaptability test of the roll-and-pitch optoelectronic payload. During the test, it is necessary to keep the detection optical path and related detection equipment stationary.
[0063] Step 5: Reset the optical axis pointing of the roll-and-pitch electro-optical payload after the test.
[0064] After the test is completed, gently place the tooling frame with the roll-and-pitch electro-optical payload back to the position marked in Step 4, keeping it basically the same. Power on the roll-and-pitch electro-optical payload and adjust the roll frame and pitch frame of the roll-and-pitch electro-optical payload to near the roll and pitch frame angle values recorded in Step 4, keeping it basically the same.
[0065] The autocollimator theodolite only observes and cannot be adjusted. Adjust the tooling frame, the roll frame and the pitch frame of the roll-and-pitch electro-optical payload so that the crosshair of the autocollimator theodolite itself coincides with the divided crosshair image reflected back by the cube prism, realizing the autocollimation of the cube prism mirror surface and the optical axis of the autocollimator theodolite, thereby completing the precise reset of the optical axis pointing of the roll-and-pitch electro-optical payload.
[0066] Step 6: Detect the parallelism consistency of the optical axis of the thermal imaging sight after the test.
[0067] Perform thermal imaging focusing operation on the roll-and-pitch electro-optical payload to make the small hole image on the thermal imaging clear. Then, based on the positional relationship between the thermal imaging crosshair 11 and the small hole image 10 on the thermal imaging, judge the parallelism consistency of the optical axis of the thermal imaging sight before and after the test: If the center of the thermal imaging crosshair 11 coincides with the center of the small hole image 10, it means that the optical axis of the thermal imaging sight has not shifted after the test; as Figure 6 shown, if the center of the thermal imaging crosshair 11 is offset to the left relative to the center of the small hole image 10, it means that the optical axis of the thermal imaging sight has shifted upward in the Y direction of the roll-and-pitch electro-optical payload as Figure 2 shown, and the offset size represents the degree of the optical axis offset of the thermal imaging sight; if the center of the thermal imaging crosshair 11 is offset downward relative to the center of the small hole image 10, it means that the optical axis of the thermal imaging sight has shifted to the left in the X direction of the roll-and-pitch electro-optical payload as Figure 2 shown, and the offset size represents the degree of the optical axis offset of the thermal imaging sight. Similarly, if the center of the thermal imaging crosshair 11 is offset to the right relative to the center of the small hole image 10, it means that the optical axis of the thermal imaging sight has shifted downward in the Y direction of the roll-and-pitch electro-optical payload as Figure 2 shown; if the center of the thermal imaging crosshair 11 is offset upward relative to the center of the small hole image 10, it means that the optical axis of the thermal imaging sight has shifted to the right in the X direction of the roll-and-pitch electro-optical payload as Figure 2 shown.
[0068] Step 7: Detect the parallelism consistency of the optical axis of the laser illuminator after the test.
[0069] Turn on the laser ranging mode of the laser illuminator. After emitting the laser for a few seconds, stop and turn off the laser illuminator. The laser leaves a laser spot image 12 on the laser target paper and forms an image on the thermal image. Then, based on the positional relationship between the laser spot image 12 and the small hole image 10 on the thermal image, the parallel consistency of the optical axis of the laser illuminator before and after the test is judged: If the center of the laser spot image 12 coincides with the center of the small hole image 10, it indicates that the optical axis of the laser illuminator has not shifted after the test; as Figure 7 shown, if the center of the laser spot image 12 is shifted to the left relative to the center of the small hole image 10, it indicates that the optical axis of the laser illuminator in the Y direction is shifted upward in a roll-pitch type optoelectronic payload such as Figure 2 . The magnitude of the shift represents the degree of the optical axis shift of the laser illuminator; if the center of the laser spot image 12 is shifted downward relative to the center of the small hole image 10, it indicates that the optical axis of the laser illuminator in the X direction is shifted to the left in a roll-pitch type optoelectronic payload such as Figure 2 . The magnitude of the shift represents the degree of the optical axis shift of the laser illuminator. Similarly, if the center of the laser spot image 12 is shifted to the right relative to the center of the small hole image 10, it indicates that the optical axis of the laser illuminator in the Y direction is shifted downward in a roll-pitch type optoelectronic payload such as Figure 2 ; if the center of the laser spot image 12 is shifted upward relative to the center of the small hole image 10, it indicates that the optical axis of the laser illuminator in the X direction is shifted to the right in a roll-pitch type optoelectronic payload such as Figure 2 .
[0070] Before the test of the present invention, the self-collimation theodolite is used to fix the optical axis pointing of the roll-pitch type optoelectronic payload. After the test, through the self-collimation of the self-collimation theodolite and the right-angle prism, the optical axis pointing of the roll-pitch type optoelectronic payload is reset. After the test, based on the positional relationships between the center of the thermal image crosshair of the thermal imaging sighting device, the center of the laser spot image and the center of the small hole image respectively, it can be accurately judged whether the optical axes of the thermal imaging sighting device and the laser illuminator have shifted after the test, and the degree of the upward, downward, left or right shift of the optical axis can be judged.
[0071] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present invention.
Claims
1. A detection method for the parallel consistency of the optical axes of a roll-and-pitch optoelectronic payload, characterized in that, Including the following steps: Step 1: Assembly of the laser illuminator, thermal imaging sight, right-angle cube prism and roll-pitch optoelectronic payload: Install the laser illuminator and the thermal imaging sight at the corresponding positions on the housing of the roll-pitch optoelectronic payload, and install the right-angle cube prism on the same mounting plane as the laser illuminator and close to the laser illuminator; Step 2: Set up the detection optical path: Step 2.1: Install the assembled roll-pitch optoelectronic payload on the top of the tooling rack, and place the tooling rack, the target holder with an optical bench, the off-axis reflective collimator, the illumination light source and the autocollimation theodolite on the same optical platform; Adjust the roll frame of the roll-pitch optoelectronic payload to a first preset angle, and adjust the pitch frame of the roll-pitch optoelectronic payload to a second preset angle, so that the laser illuminator and the thermal imaging sight of the roll-pitch optoelectronic payload face the off-axis reflective collimator; Step 2.2: First, fix the laser target paper with a small hole in the center on the center of the target holder with an optical bench, and then place the target holder with an optical bench between the roll-pitch optoelectronic payload and the off-axis reflective collimator, and make the target holder with an optical bench be at the focal plane of the off-axis reflective collimator; Step 2.3: Place the illumination light source beside the target holder with an optical bench to irradiate the small hole in the center of the laser target paper, so that a temperature difference is generated between the edge and the center of the small hole on the laser target paper; Step 2.4: Set up the autocollimation theodolite on one side perpendicular to the optical axis direction of the roll-pitch optoelectronic payload, and make the autocollimation theodolite aim at the side end face of the right-angle cube prism; Step 3: Detect the parallelism consistency of the optical axis of the roll-pitch optoelectronic payload before the test: Adjust the angles of the roll frame and the pitch frame of the roll-pitch optoelectronic payload to make the center of the thermal image crosshair in the thermal image coincide with the center of the small hole image on the laser target paper, and make the center of the laser spot image formed by the laser illuminator coincide with the center of the small hole image on the laser target paper; Step 4: Fix the optical axis direction of the roll-pitch optoelectronic payload by self-collimation of the autocollimation theodolite and the right-angle cube prism, record the angles of the roll frame and the pitch frame of the roll-pitch optoelectronic payload, and mark the placement position of the tooling rack on the optical platform; Step 5: Reset the optical axis direction of the roll-pitch optoelectronic payload after the test: Step 6: Detect the parallelism consistency of the optical axis of the thermal imaging sight after the test: Step 6.1: Perform thermal imaging focusing operation on the roll-pitch optoelectronic payload to make the small hole image in the thermal image clearly visible; Step 6.2: Observe the positional relationship between the center of the thermal image crosshair and the center of the small hole image in the thermal image, and judge the parallelism consistency of the optical axis of the thermal imaging sight: If the center of the thermal image crosshair coincides with the center of the small hole image, it indicates that the optical axis of the thermal imaging sight has not shifted after the test; If the center of the thermal image crosshair is shifted left and right relative to the center of the small hole image, it indicates that the optical axis of the thermal imaging sight has shifted up and down in the vertical direction of the roll-pitch optoelectronic payload, and the offset size represents the degree of optical axis offset; If the center of the thermal image crosshair is shifted up and down from the center of the small hole image, it indicates that the optical axis of the thermal imaging sight has shifted right and left in the horizontal direction of the roll-pitch optoelectronic payload, and the offset size represents the degree of optical axis offset; Step 7: Detect the parallelism consistency of the optical axis of the laser illuminator after the test: Step 7.1: Start the laser illuminator to emit laser light. After several seconds, turn off the laser illuminator. The laser leaves a laser spot on the laser target paper and presents a clear laser spot image on the thermal image. Step 7.2: Observe the positional relationship between the center of the laser spot image and the center of the small hole image, and judge the parallel consistency of the optical axis of the laser illuminator after the test: If the center of the laser spot image coincides with the center of the small hole image, it indicates that the optical axis of the laser illuminator has not shifted after the test; If the center of the laser spot image is shifted left or right relative to the center of the small hole image, it indicates that the optical axis of the laser illuminator has shifted up and down in the vertical direction of the roll-pitch type optoelectronic payload, and the offset size represents the degree of optical axis offset of the laser illuminator; If the center of the laser spot image is shifted up or down relative to the center of the small hole image, it indicates that the optical axis of the laser illuminator has shifted left and right in the horizontal direction of the roll-pitch type optoelectronic payload, and the offset size represents the degree of optical axis offset of the laser illuminator.
2. The method for detecting the parallel consistency of the optical axes of a roll-and-pitch optoelectronic payload according to claim 1, wherein In step 2.1, adjust the roll angle of the roll-pitch type optoelectronic payload so that the roll frame is in the vertical direction; adjust the pitch angle of the roll-pitch type optoelectronic payload so that the pitch frame is in the horizontal direction.
3. The method for detecting the parallel consistency of the optical axes of a roll-and-pitch optoelectronic payload according to claim 2, wherein In step 2.2, the diameter of the small hole at the center of the laser target paper is smaller than the diameter of the laser spot formed by the laser emitted by the laser illuminator on the laser target paper.
4. The method for detecting the parallel consistency of the optical axes of a roll-and-pitch optoelectronic payload according to claim 3, characterized in that In step 2.4, the horizontal distance between the position where the autocollimation theodolite is set and the roll-pitch type optoelectronic payload is 30 cm to 40 cm.
5. The method for detecting the parallel consistency of the optical axes of a rolling and pitching optoelectronic payload according to claim 1, wherein In step 3, the process of detecting the parallel consistency of the optical axis of the roll-pitch type optoelectronic payload before the test is as follows: Step 3.1: Start the roll-pitch type optoelectronic payload to work. Observe the laser target paper on the target surface with the optical bench through the thermal imaging sight and the off-axis reflective collimator, and perform thermal imaging focusing operation to make the small hole on the laser target paper clearly appear on the thermal image, forming a small hole image. Step 3.2: Adjust the angles of the roll frame and the pitch frame of the roll-pitch type optoelectronic payload so that the center of the thermal imaging crosshair in the thermal image coincides with the center of the small hole image in the thermal image. Step 3.3: Start the laser illuminator to emit laser light. After several seconds, turn off the laser illuminator; The laser forms a laser spot on the laser target paper, and the center of the laser spot coincides with the center of the small hole on the laser target paper; The laser spot clearly presents a laser spot image on the thermal image; Complete the detection of the parallel consistency of the optical axis of the roll-pitch type optoelectronic payload.
6. The method for detecting the parallel consistency of the optical axes of a roll-and-pitch optoelectronic payload according to claim 1, wherein, In step 4, the method of fixing the optical axis of the roll-pitch type optoelectronic payload with the autocollimation theodolite is as follows: Start the autocollimation theodolite, and adjust the azimuth and pitch angles of the autocollimation theodolite so that the crosshair of the autocollimation theodolite itself coincides with the divided crosshair image reflected back by the cube prism, and complete the autocollimation of the cube prism mirror surface and the optical axis of the autocollimation theodolite.
7. A method for detecting the parallel consistency of the optical axes of a rolling and pitching optoelectronic payload according to claim 1, characterized in that Between step 4 and step 5, there is also a step of performing the environmental adaptability test of the roll-pitch type optoelectronic payload: Remove the tooling rack equipped with the roll-pitch type optoelectronic payload from the optical platform, and perform the environmental adaptability test on the roll-pitch type optoelectronic payload according to the product test technical requirements.
8. The method for detecting the parallel consistency of the optical axes of a roll-and-pitch optoelectronic payload according to claim 1, wherein In step 5, the process of resetting the optical axis pointing of the roll-pitch type optoelectronic payload after the test is as follows: Step 5.1: Place the tooling rack equipped with the roll-pitch type optoelectronic payload back on the optical platform according to the installation position marked in step 4. Step 5.2: Start the operation of the roll-and-pitch optoelectronic payload, and adjust the roll frame and pitch frame of the roll-and-pitch optoelectronic payload to the angles recorded in Step 4; Step 5.3: Fine-tune the position of the tooling rack, the angles of the roll frame and pitch frame of the roll-and-pitch optoelectronic payload, so that the crosshair of the autocollimator itself coincides with the crosshair image of the division reflected back by the cube prism; Complete the reset of the optical axis pointing of the roll-and-pitch optoelectronic payload.