Device and method for detecting and correcting optical axis consistency of multi-sensor photoelectric equipment

Abstract

The invention belongs to the technical field of applied optics, and particularly relates to a multi-sensor photoelectric equipment optical axis consistency detection and correction device and method. The detection and correction device is used for multi-sensor photoelectric equipment and comprises an off-axis parabolic mirror collimator, an auto-collimation front lens, a short-wave infrared camera, a laser color development cross plate, a heat source plate, a strong light source, a rhombic prism, a dichroic mirror and an image processing and control system. According to the invention, optical axis consistency detection and calibration can be carried out on photoelectric equipment comprising an infrared imaging system, a television imaging system, a laser irradiation system and a laser receiving system at the same time, the equipment does not need to be disassembled in the whole process, and the device has the advantages of high efficiency and various compatible sensors; by introducing an image processing and control program based on pixel point identification, the optical axis deviation after correction of each sensor is less than one pixel, and the correction precision is greatly improved.

Description

Technical Field

[0001] The present invention belongs to the field of applied optical technology, and in particular relates to a device and method for detecting and correcting the consistency of optical axes of a multi-sensor optoelectronic device. Background Art

[0002] With the increasing demand for detection, most military optoelectronic equipment, such as airborne optoelectronic radars, optoelectronic pods, vehicle-mounted optoelectronic stabilized aiming systems, and submarine optoelectronic masts, now incorporate multiple sensors, including infrared imaging, visible light imaging, laser illumination, and laser reception. When optoelectronic equipment uses multiple sensors to track and detect targets, the optical axes of each sensor must remain consistent. However, due to factors such as machining, assembly accuracy, and temperature fluctuations, the optical axes of each sensor can deviate to a certain extent. This can result in the laser illuminator being unable to accurately guide the target, and discrepancies between visible light and infrared target position indications, reducing the equipment's tracking, detection, sighting, and measurement performance. Therefore, it is crucial to inspect and calibrate the consistency of the optical axes of each optoelectronic device's sensors.

[0003] Current optical axis consistency detection methods generally suffer from low detection efficiency and a limited range of compatible sensors, making it difficult to efficiently detect and correct the optical axis consistency of optoelectronic devices, including medium-wave infrared cameras, long-wave infrared cameras, television cameras, laser illuminators, and laser receivers. Patent publication number CN118329402A proposes a multispectral, high-precision optical axis consistency detection device. This device utilizes a collimator, an illumination source, a hollow cross target plate, a high-definition display, and a high-precision turntable. It can efficiently and accurately detect the optical axis deviation of optoelectronic products' low-light detection modules and infrared detection modules. However, this device has a single function and cannot simultaneously detect the optical axis deviation of both the laser illuminator and the laser receiver. Patent publication number CN119395669A proposes a method for measuring the optical axis consistency of a laser rangefinder's receiving optical axis. This method uses a beam splitter prism to image the object within the laser receiving window and a short-wave infrared camera group to image the visual aiming optical axis to calculate the offset between the laser receiving optical axis and the visual aiming optical axis. This method can simply and accurately measure the optical axis deviation of the visual aiming system and the laser receiving system, but its function is still relatively simple and cannot simultaneously detect the optical axes of the infrared system, television system, laser irradiation and laser receiver.

[0004] In summary, when the optical axes of components in multi-sensor optoelectronic devices deviate, their tracking, detection, sighting, and measurement performance can be significantly degraded, and some functions can even fail. Therefore, it is crucial to detect and calibrate the optical axis consistency of each sensor in an optoelectronic device. Existing optical axis consistency detection and correction devices are inefficient and limited in functionality, unable to simultaneously detect the optical axes of infrared systems, television systems, laser illuminators, and laser receivers. Summary of the Invention

[0005] The object of the present invention is to provide a device and method for detecting and correcting the consistency of optical axes of a multi-sensor optoelectronic device.

[0006] The technical solution for achieving the purpose of the present invention is: a device for detecting and correcting the consistency of optical axes of a multi-sensor optoelectronic device, wherein the multi-sensor optoelectronic device includes a medium-wave infrared camera, a long-wave infrared camera, a television system, a laser illuminator, and a laser receiver;

[0007] The detection and correction device includes an off-axis parabolic reflector collimator, an autocollimation front mirror, a short-wave infrared camera, a laser color cross plate, a heat source plate, a strong light source, a rhombus prism, a dichroic mirror, and an image processing and control system;

[0008] The laser color cross plate is placed at the focal plane of the off-axis parabolic reflector collimator, serving as a reference for optical axis correction and imaging on medium-wave infrared, long-wave infrared and television cameras; the heat source plate is placed behind the laser color cross plate and serves as the radiation source for medium-wave infrared and long-wave infrared cameras; the dichroic mirror is placed in front of the laser color cross plate and at a 45-degree angle to the optical axis of the off-axis parabolic reflector collimator, the strong light source is placed in the direction of the optical axis after being reflected by the dichroic mirror, and the light outlet and the focal plane of the off-axis parabolic reflector collimator coincide with each other; the off-axis parabolic reflector collimator is used to color the laser at the focal plane position The light emitted by the cross plate and the strong light source is then projected into the optoelectronic device to be tested; the self-collimating front mirror is used to transfer the optical axis reference of the television system and amplify the image of the laser receiving detector; the strong light source is used to illuminate the laser receiving detector when detecting the optical axis of the laser receiver; the dichroic mirror can reflect visible light and short-wave infrared, and at the same time needs to be able to transmit medium-wave infrared, long-wave infrared, short-wave laser and visible light; the image processing and control system is used to identify the number of optical axis deviation pixels based on the images taken by the infrared camera and the television system, calculate the optical axis deviation amount and send the optical axis reference point correction instruction to the corresponding sensor according to the deviation amount.

[0009] Furthermore, the off-axis parabolic reflector collimator has an aperture of 400 mm and a focal length of 3 m.

[0010] Furthermore, the objective lens of the autocollimator front mirror has a focal length of 400 mm, an apparent magnification of 25 times, a field of view of 2.5°, an effective aperture of 50 mm, an eyepiece exit pupil diameter of 2.5 mm, and an exit pupil distance of 15 mm.

[0011] Furthermore, the power of the strong light source should not be less than 500W, and the light output diameter D should satisfy the following formula to illuminate the entire target surface of the laser receiving detector:

[0012]

[0013] Where f0 is the focal length of the parabolic reflector light pipe, and f1 is the focal length of the laser receiver;

[0014] Or according to the above formula, add a beam expander at the light outlet of the light source.

[0015] Furthermore, the strong light source is a xenon lamp with a power of not less than 500W and a light output diameter of not less than 40mm.

[0016] Furthermore, the field of view of the short-wave infrared camera satisfies the following formula:

[0017]

[0018] Where d is the diameter of the laser detector target surface, and f1, f2 and f3 are the focal lengths of the laser receiver, the autocollimation front mirror objective lens and the autocollimation front mirror eyepiece, respectively.

[0019] Furthermore, the field of view of the short-wave infrared camera is not less than 25°.

[0020] Furthermore, the transmission spectrum range of the dichroic mirror is 0.5 μm to 14 μm, and the reflection spectrum range is 0.5 μm to 1.7 μm.

[0021] A method for detecting and correcting optical axis consistency using the above-mentioned device is used for a multi-sensor optoelectronic device including a medium-wave infrared camera, a long-wave infrared camera, a television system, a laser illuminator, and a laser receiver; the method comprises the following steps:

[0022] Step (1): After adding an attenuation plate, the laser irradiator emits a laser, which is reflected by the collimator and passes through the dichroic mirror to form a visible light image at the laser color cross plate. The position of the laser color cross plate is fine-tuned so that the center of the crosshairs coincides with the image. At this time, the center of the crosshairs is the optical axis reference point of the laser irradiator in the detection and correction device;

[0023] Step (2): The image of visible light is reflected by the collimator and formed on the television system of the optoelectronic device. By interpreting the television imaging screen, the deviation between the imaging point and the current optical axis reference point of the television system is obtained. According to the deviation, the optical axis reference point in the imaging screen of the television system is electronically corrected so that it coincides with the image formed by the laser illuminator on the laser color cross plate. At this time, the optical axis of the television system is adjusted to be consistent with the optical axis of the laser illuminator.

[0024] Step (3): Turn off the laser illuminator, turn on the heat source plate to image the crosshairs of the laser color cross plate on the medium-wave infrared camera and the long-wave infrared camera, and interpret the infrared imaging image to obtain the deviation between the crosshairs and the current optical axis reference point of the infrared system. According to the deviation, the optical axis reference point of the infrared system is electronically corrected to coincide with the crosshairs. At this time, the infrared system is parallel to the optical axis of the television system and the laser illuminator; wherein the medium-wave infrared camera and the long-wave infrared camera constitute the infrared system;

[0025] Step (4): Place the autocollimation front mirror in front of the laser receiving optical path, with the apertures of the two partially overlapping;

[0026] Step (5): Turn on the auto-collimation front mirror lighting device, introduce the objective lens output light into the television system through the rhombus prism, when the bright cross image of the auto-collimation front mirror appears in the field of view of the television camera, adjust the azimuth and pitch attitude of the auto-collimation front mirror (2) so that the cross image coincides with the optical axis reference point of the television system, at this time the auto-collimation front mirror and the optical axis of the television system are consistent, align the short-wave infrared camera lens with the eyepiece of the auto-collimation front mirror so that the pupils of the two coincide, and fine-tune the azimuth of the two so that the center of the auto-collimation front mirror reticle is located at the center of the field of view of the short-wave infrared camera;

[0027] Step (6): Turn on the strong light source, so that the outgoing light is reflected by the dichroic mirror and collimated by the off-axis parabolic reflector parallel light tube, and then enters the laser receiving light path to illuminate the photosensitive surface of the laser receiving detector. The light beam reflected by the photosensitive surface is collimated by the laser receiving light path, passes through the self-collimating front mirror and the short-wave infrared lens, and is imaged on the short-wave infrared camera;

[0028] Step (7): connect the short-wave infrared camera to the optoelectronic device through the image processing and control system, and interpret the short-wave infrared camera image to obtain the horizontal and vertical pixel number deviations between the center of the laser receiving photosensitive surface and the center of the auto-collimation front mirror graticule. According to the deviations, perform two-dimensional lateral correction on the target surface of the laser receiving detector so that it coincides with the center of the auto-collimation front mirror graticule in the short-wave infrared camera image; at this time, the optical axis of the laser receiver is consistent with that of the auto-collimation front mirror, that is, consistent with the optical axis of the television system; so far, the optical axes of the laser illuminator, television system, infrared system and laser receiver are all consistent.

[0029] Compared with the prior art, the present invention has the following significant advantages:

[0030] Compared with existing devices and methods, the present invention can simultaneously perform optical axis consistency detection and calibration on optoelectronic equipment containing infrared imaging systems, television imaging systems, laser irradiation systems and laser receiving systems, and the entire process does not require the disassembly of equipment. It has the advantages of high efficiency and compatibility with a wide variety of sensors. By introducing image processing and control programs based on pixel point recognition, the optical axis deviation of each sensor after correction is less than 1 pixel, greatly improving the correction accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Schematic diagram of the optical axis consistency detection and correction device of the present invention.

[0032] Figure 2 This is a flow chart of optical axis correction for the television system and infrared system of the present invention.

[0033] Figure 3 This is a flow chart of the optical axis correction of the laser receiving system of the present invention. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below with reference to the accompanying drawings.

[0035] like Figure 1 As shown, a multi-sensor optical axis consistency detection and correction device includes an off-axis parabolic reflector parallel light tube 1, an autocollimation front mirror 2, a short-wave infrared camera 5, a laser color cross plate 6, a heat source plate 7, a strong light source 3, a dichroic mirror 4, and an image processing and control system.

[0036] The laser color cross plate 6 is placed at the focal plane of the collimator 1 as a reference for optical axis correction, and is imaged on the medium-wave infrared, long-wave infrared and television cameras; the heat source plate 7 is placed behind the laser color cross plate 6 as a medium-wave infrared and long-wave infrared radiation source; the dichroic mirror 4 is placed in front of the laser color cross plate 6, at a 45-degree angle to the optical axis of the collimator 1, and the strong light source 3 is placed in the direction after the optical axis is reflected by the dichroic mirror 4, and the light outlet coincides with the focal plane of the off-axis parabolic reflector collimator 1.

[0037] The collimator 1 is used to collimate the laser color cross plate 6 and the strong light source 3 at the focal position and then project the light into the photoelectric device to be tested. To ensure that the collimator aperture can cover all sensors;

[0038] The self-aligning front mirror 2 is used to transfer the optical axis reference of the television system and amplify the image of the laser receiving detector. To ensure that the laser receiving detector can clearly image the short-wave infrared camera 5 while leaving enough field of view adjustment margin;

[0039] The strong light source 3 is used to illuminate the laser receiving detector when testing the laser receiver's optical axis. During the alignment process, to ensure that the laser receiving detector's target surface is fully illuminated by the strong light source 3 and that the image captured by the short-wave infrared camera 5 has a sufficient signal-to-noise ratio, the power of the strong light source 3 should be sufficiently high, generally not less than 500W, and the light output aperture D should satisfy the following formula to illuminate the entire target surface of the laser receiving detector:

[0040]

[0041] Where f0 is the focal length of the parabolic reflector light pipe, and f1 is the focal length of the laser receiver. If there is no strong light source with the corresponding aperture, a beam expander can be added at the light outlet according to the above formula;

[0042] The dichroic mirror 4 as a reflector of the strong light source 3 needs to be able to reflect visible light and short-wave infrared, and at the same time needs to be able to transmit medium-wave infrared, long-wave infrared, short-wave laser and visible light so that the infrared and visible light from the laser color cross plate 6 can reach the collimator 1.

[0043] The image processing and control system is used to identify the number of optical axis deviation pixels based on the images taken by the infrared and television systems, calculate the optical axis deviation amount and send optical axis reference point correction instructions to the corresponding sensor based on the deviation amount.

[0044] To ensure that the collimator aperture can cover all sensors, based on the aperture and focal length of the current mainstream airborne optoelectronic system, the off-axis parabolic reflector collimator 1 in this embodiment has an aperture of 400 mm and a focal length of 3 m.

[0045] The autocollimation front mirror 2 is used to connect to the optical axis reference of the television system and amplify the laser receiving detector. To ensure that the laser receiving detector can clearly image the short-wave infrared camera while leaving sufficient field of view adjustment margin, based on the current mainstream airborne optoelectronic system parameters, the autocollimation front mirror 2 in this embodiment has an objective lens focal length of 400mm, an apparent magnification of 25x, a field of view of 2.5°, an effective aperture of 50mm, an eyepiece exit pupil diameter of 2.5mm, and an exit pupil distance of 15mm.

[0046] A xenon lamp is used as the strong light source 3. During the alignment process, to ensure that the target surface of the laser receiving detector can be fully illuminated by the strong light source 3 and the image on the short-wave infrared camera 5 has a sufficient signal-to-noise ratio, the xenon lamp power is 500W and the light output diameter is 40mm;

[0047] In order to image the entire target surface of the laser detector on the short-wave infrared camera 5 and to have sufficient observation and adjustment margins, the field of view angle of the short-wave infrared camera in this embodiment is 25°.

[0048] The dichroic mirror 4 needs to be able to transmit medium-wave infrared, long-wave infrared, short-wave laser and visible light and reflect visible light and short-wave infrared. In this embodiment, the transmission spectrum range of the dichroic mirror 4 is 0.5μm to 14μm, and the reflection spectrum range is 0.5μm to 1.7μm.

[0049] The detection and correction methods are as follows:

[0050] like Figure 2-3As shown, since the physical position of the laser illuminator is fixed and the optical axis cannot be electronically adjusted, the axis calibration process is based on the optical axis of the laser illuminator. After the laser illuminator is equipped with an attenuation plate, it emits a laser, which is reflected by the collimator 1 and passes through the dichroic mirror 4 to form a visible light image at the laser color cross plate 6. The position of the laser color cross plate 6 is fine-tuned so that the center of the crosshairs coincides with the image. At this time, the center of the crosshairs is the optical axis reference point of the laser illuminator in the detection system. After being reflected by the collimator, the visible light image is imaged on the television system of the optoelectronic device. By interpreting the television imaging screen, the deviation between the imaging point and the current optical axis reference point of the television system is obtained. Based on the deviation, the optical axis reference point in the television system imaging screen is electronically corrected so that it coincides with the image of the laser illuminator on the laser color cross plate. At this time, the optical axis of the television system is adjusted to be consistent with the optical axis of the laser illuminator.

[0051] Turn off the laser illuminator and turn on the heat source plate to image the crosshairs of the laser color cross plate onto the medium-wave infrared and long-wave infrared cameras. By interpreting the medium-wave infrared and long-wave infrared imaging images, the deviation between the crosshairs and the current optical axis reference point of the infrared system is obtained. Based on the deviation, the optical axis reference point of the infrared system is electronically corrected to coincide with the crosshairs. At this time, the optical axes of the infrared system, television system and laser illuminator are parallel.

[0052] Place the autocollimator front mirror directly in front of the laser receiving optical path, with their apertures partially overlapping. Turn on the autocollimator front mirror illumination device and direct the light emitted from the objective lens into the television camera using a rhombic prism. When the bright cross image of the autocollimator front mirror appears in the television camera's field of view, adjust the autocollimator front mirror's azimuth and pitch so that its cross image coincides with the television camera's optical axis reference point. At this point, the autocollimator front mirror and the television optical axis are aligned. Align the shortwave infrared camera lens with the eyepiece of the autocollimator front mirror so that their pupils coincide. Fine-tune their azimuths so that the center of the autocollimator front mirror's reticle is located at the center of the shortwave infrared camera's field of view. Turn on a strong light source so that its emitted light, reflected by the dichroic mirror and collimated by the off-axis parabolic reflector collimator, enters the laser receiving optical path to illuminate the photosensor of the laser receiving detector. The light beam reflected by the photosensor is collimated by the laser receiving optical path, passes through the autocollimator front mirror and the shortwave infrared lens, and forms an image on the shortwave infrared camera. In order to image the entire target surface of the laser detector on the short-wave infrared camera and to ensure sufficient observation and adjustment margin, the field of view of the short-wave infrared camera should be larger than the size of the five detectors after system magnification, that is, it should satisfy the following formula:

[0053]

[0054] Where d is the diameter of the laser detector target surface, and f1, f2, and f3 are the focal lengths of the laser receiver, the autocollimator objective lens, and the autocollimator eyepiece, respectively. The short-wave infrared camera is connected to the device through image processing and control programs, and the horizontal and vertical pixel deviations n between the center of the laser receiving photosensitive surface and the center of the autocollimator reticle are obtained by interpreting the short-wave infrared camera image. x and n y According to the deviation, the target surface of the laser receiving detector is corrected in two dimensions so that it coincides with the center of the autocollimation front mirror graticule in the short-wave infrared camera image. x and vertical correction h y They are

[0055]

[0056] Where f1, f2, f3, and f4 are the focal lengths of the laser receiver, autocollimator objective lens, autocollimator eyepiece, and shortwave infrared camera, respectively. At this point, the optical axes of the laser receiver and autocollimator are aligned, which in turn is consistent with the optical axis of the television system. Thus, the optical axes of the laser illuminator, television system, infrared system, and laser receiver are all aligned.

Claims

1. A multi-sensor optoelectronic device optical axis consistency detection and correction device, characterized in that: Multi-sensor optoelectronic equipment includes a medium-wave infrared camera, a long-wave infrared camera, a television system, a laser illuminator, and a laser receiver; The detection and correction device comprises an off-axis parabolic reflector collimator (1), an autocollimation front mirror (2), a short-wave infrared camera (5), a laser color cross plate (6), a heat source plate (7), a strong light source (3), an oblique prism (9), a dichroic mirror (4), and an image processing and control system; The laser color cross plate (6) is placed at the focal plane of the off-axis parabolic reflector collimator (1) as a reference for optical axis correction and imaging on the medium-wave infrared, long-wave infrared and television cameras; the heat source plate (7) is placed behind the laser color cross plate (6) and serves as a radiation source for the medium-wave infrared camera and the long-wave infrared camera; the color separation mirror (4) is placed in front of the laser color cross plate (6) and is placed at a 45-degree angle to the optical axis of the off-axis parabolic reflector collimator (1); the strong light source (3) is placed on the optical axis After being reflected by the dichroic mirror (4), the light outlet and the focal plane of the off-axis parabolic reflector collimator (1) coincide; the off-axis parabolic reflector collimator (1) is used to align the laser color cross plate (6) and the strong light source (3) at the focal plane position and then project them into the photoelectric device to be tested; the self-collimating front mirror (2) is used to transfer the optical axis reference of the television system and amplify the image of the laser receiving detector; the strong light source (3) is used to illuminate the laser receiving detector when detecting the optical axis of the laser receiver; The dichroic mirror (4) can reflect visible light and short-wave infrared, and needs to be able to transmit medium-wave infrared, long-wave infrared, short-wave laser and visible light; the image processing and control system is used to identify the number of optical axis deviation pixels based on the image captured by the infrared camera and the television system, calculate the optical axis deviation amount and send an optical axis reference point correction instruction to the corresponding sensor according to the deviation amount.

2. The device according to claim 1, characterized in that The off-axis parabolic reflector collimator (1) has an aperture of 400 mm and a focal length of 3 m.

3. The device according to claim 1, characterized in that The objective lens focal length of the autocollimation front mirror (2) is 400 mm, the visual magnification is 25 times, the field of view is 2.5 degrees, the effective aperture is 50 mm, the eyepiece exit pupil diameter is 2.5 mm, and the exit pupil distance is 15 mm.

4. The device according to claim 1, characterized in that The power of the strong light source (3) shall not be less than 500W, and the light output diameter D shall satisfy the following formula to illuminate the entire target surface of the laser receiving detector: Where f0 is the focal length of the parabolic reflector light pipe, and f1 is the focal length of the laser receiver; Or according to the above formula, add a beam expander at the light outlet of the light source.

5. The device according to claim 4, characterized in that The strong light source (3) is a xenon lamp with a power of not less than 500W and a light output diameter of not less than 40mm.

6. The device according to claim 1, characterized in that The field of view of the short-wave infrared camera (5) satisfies the following equation: Where d is the diameter of the laser detector target surface, and f1, f2 and f3 are the focal lengths of the laser receiver, the autocollimation front mirror objective lens and the autocollimation front mirror eyepiece, respectively.

7. The device according to claim 6, characterized in that The field of view of the short-wave infrared camera shall not be less than 25°.

8. The device according to claim 1, characterized in that The transmission spectrum range of the dichroic mirror (4) is 0.5 μm to 14 μm, and the reflection spectrum range is 0.5 μm to 1.7 μm.

9. A method for detecting and correcting optical axis consistency using the device according to any one of claims 1 to 8, characterized in that: A multi-sensor optoelectronic device comprising a medium-wave infrared camera, a long-wave infrared camera, a television system, a laser illuminator, and a laser receiver; comprising the following steps: Step (1): The laser irradiator is equipped with an attenuation plate to emit laser light, which is reflected by the collimator (1) and forms a visible light image at the laser color cross plate (6) after passing through the dichroic mirror (4). The position of the laser color cross plate (6) is fine-tuned so that the center of the crosshairs coincides with the image. At this time, the center of the crosshairs is the optical axis reference point of the laser irradiator in the detection and correction device; Step (2): The image of visible light is reflected by the collimator (1) and then formed on the television system of the optoelectronic device. By interpreting the television imaging screen, the deviation between the imaging point and the current optical axis reference point of the television system is obtained. Based on the deviation, the optical axis reference point in the imaging screen of the television system is electronically corrected so that it coincides with the image formed by the laser illuminator on the laser color cross plate. At this time, the optical axis of the television system is adjusted to be consistent with the optical axis of the laser illuminator. Step (3): Turn off the laser irradiator, turn on the heat source plate (7) to image the crosshairs of the laser color cross plate (6) on the medium-wave infrared camera and the long-wave infrared camera, and interpret the infrared imaging image to obtain the deviation between the crosshairs and the current optical axis reference point of the infrared system. According to the deviation, the optical axis reference point of the infrared system is electronically corrected to coincide with the crosshairs. At this time, the infrared system is parallel to the optical axis of the television system and the laser irradiator; wherein the medium-wave infrared camera and the long-wave infrared camera constitute the infrared system; Step (4): Place the self-aligning front mirror (2) in front of the laser receiving optical path, with the apertures of the two partially overlapping; Step (5): Turn on the lighting device of the autocollimator front mirror (2), introduce the emitted light of the objective lens into the television system through the rhombus prism (9), and when the bright cross image of the autocollimator front mirror (2) appears in the field of view of the television camera, adjust the azimuth and pitch attitude of the autocollimator front mirror (2) so that the cross image coincides with the optical axis reference point of the television system. At this time, the autocollimator front mirror (2) and the optical axis of the television system are consistent, align the lens of the short-wave infrared camera (5) with the eyepiece of the autocollimator front mirror (2), so that the pupils of the two coincide, and fine-tune the azimuth of the two so that the center of the reticle of the autocollimator front mirror (2) is located at the center of the field of view of the short-wave infrared camera (5); Step (6): Turn on the strong light source (3), so that the emitted light is reflected by the dichroic mirror (4) and collimated by the off-axis parabolic reflector parallel light tube (1), and then enters the laser receiving light path to illuminate the photosensitive surface of the laser receiving detector. The light beam reflected by the photosensitive surface is collimated by the laser receiving light path, passes through the self-collimating front mirror (2) and the short-wave infrared lens, and is imaged on the short-wave infrared camera (5); Step (7): The short-wave infrared camera (5) is connected to the optoelectronic device for communication through the image processing and control system. By interpreting the image of the short-wave infrared camera (5), the horizontal and vertical pixel number deviations between the center of the laser receiving photosensitive surface and the center of the auto-collimation front mirror graticule are obtained. According to the deviations, a two-dimensional lateral correction is performed on the target surface of the laser receiving detector so that it coincides with the center of the auto-collimation front mirror graticule in the short-wave infrared camera image. At this time, the optical axis of the laser receiver is consistent with that of the auto-collimation front mirror, that is, consistent with the optical axis of the television system. At this point, the optical axes of the laser illuminator, the television system, the infrared system and the laser receiver are all consistent.

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