Multi-spectrum common-aperture integrated photoelectric load optical system

Abstract

The invention discloses a multi-spectrum common-aperture integrated photoelectric load optical system, belongs to the technical field of optical engineering, and solves the problems that an existing system cannot evaluate the imaging performance in different channels and is long in installation and adjustment test period. According to the system, a coaxial two-reflection afocal optical structure is adopted, light of a target scene is split after passing through the coaxial two-reflection afocal optical system and a fast reflection mirror, and the split light enters a medium-wave infrared channel, a long-wave infrared channel, a visible light channel and a laser receiving channel respectively. The four channels are integrated together by sharing the coaxial two-reflection afocal system and the spectroscope, the light path is greatly simplified, the coaxial two-reflection afocal system and the imaging system of each channel can independently complete imaging, each channel can be independently installed and adjusted, the imaging performance of each channel can be evaluated, and finally integral splicing is carried out. And the installation and adjustment difficulty and cost can be greatly reduced. According to the invention, functions of optical searching and reconnaissance, target identification and tracking, target indication and positioning and the like can be provided for a fighter, and all-weather and all-time information acquisition is realized.

Description

Technical Field

[0001] The present invention relates to the field of optical engineering technology, and in particular to a multi-spectral band common aperture integrated optoelectronic load optical system. Background Art

[0002] Electro-optical payloads equipped on advanced fighter aircraft primarily provide optical search and reconnaissance, target identification and tracking, and target indication and positioning capabilities. Single-band optical systems capture limited information and cannot fully meet the needs of battlefield situational awareness or emergency rescue. Leveraging the detection advantages of laser, visible light, mid-wave infrared, and long-wave infrared spectrums for composite imaging can enhance the payload's detection capabilities and accuracy, enabling all-weather, all-day information acquisition. Therefore, multi-spectral integrated imaging has become a key focus of electro-optical payload research.

[0003] The use of a common aperture in a multi-spectral optical system can effectively increase the effective range and reduce the system size. Existing multi-spectral common aperture integrated optical systems are usually designed with an overall design concept, that is, the shared optical system and the relay systems of each spectral band meet the design requirements as a whole. In this design, neither the shared optical system nor the relay systems of each spectral band can independently achieve perfect imaging effects. Therefore, the imaging performance evaluation of the optical system can only be carried out after the overall assembly and adjustment is completed. When the number of optical elements in a multi-spectral integrated optical system is large, especially when the number of coaxial reflectors or off-axis reflectors increases, the overall assembly and testing work will face huge challenges, which will not only extend the development cycle of the optical system, but also increase the development cost. Summary of the Invention

[0004] In order to solve the problems existing in the background technology, the present invention provides a multi-spectral common-aperture integrated optoelectronic load optical system, which integrates laser, visible light, medium-wave infrared and long-wave infrared spectral bands by sharing a front-group coaxial two-mirror afocal system and a spectroscope, greatly simplifying the optical path; and the front-group coaxial two-mirror afocal system and the imaging systems of their respective channels can both be imaged separately, and their respective channels can be individually adjusted and finally spliced ​​as a whole, reducing the difficulty of adjustment.

[0005] To achieve the above object, the present invention provides the following technical solutions: The present invention provides a multi-spectral common aperture integrated optoelectronic load optical system, which includes a reflection spectroscopic system, a medium-wave and long-wave common lens assembly, a long-wave infrared channel, a medium-wave infrared channel, a visible light and laser common lens assembly, a visible light channel, and a laser receiving channel; The medium-wave-long-wave common lens assembly serves as a common assembly for the long-wave infrared channel and the medium-wave infrared channel; The visible light-laser shared lens assembly serves as a shared assembly for the visible light channel and the laser receiving channel; The reflection spectroscopic system, the medium-wave and long-wave common lens assembly, and the long-wave infrared channel constitute the long-wave infrared optical system; The reflection spectroscopic system, the medium-wave and long-wave common lens assembly, and the medium-wave infrared channel constitute the medium-wave infrared optical system; The reflective spectroscopic system, the visible light-laser common lens assembly, and the visible light channel constitute a visible light optical system; The reflection spectrometer system, the visible light-laser common lens assembly, and the laser receiving channel constitute a laser receiving optical system; The reflective spectroscopic system is used to reflect the light of the target scene multiple times and divide it into the medium-wave-long-wave spectrum and the visible light-laser spectrum; The medium-wave and long-wave common lens assembly is used to direct the medium-wave and long-wave spectrum bands into the medium-wave infrared channel and the long-wave infrared channel respectively; The visible light-laser common lens assembly is used to guide the visible light-laser spectrum band into the visible light channel and the laser receiving channel respectively.

[0006] Furthermore, the above-mentioned reflective spectroscopic system includes a primary reflector, a secondary reflector, a fast reflector, a spectroscope and a folding mirror; The light of the target scene is incident on the main reflector, and a secondary reflector is provided on the reflecting light path of the main reflector, and a quick reflector is provided on the reflecting light path of the secondary reflector, and a spectroscope is provided on the reflecting light path of the quick reflector. The spectroscope is used to divide the light into a medium-wave-long-wave spectrum band and a visible light-laser spectrum band, and is also used to introduce the visible light-laser spectrum band into the visible light channel and the laser channel respectively through the visible light-laser common lens assembly. A folding mirror is provided on the reflecting light path of the spectroscope, and is used to introduce the medium-wave-long-wave spectrum band into the medium-wave infrared channel and the long-wave infrared channel respectively through the medium-wave-long-wave common lens assembly.

[0007] Furthermore, the primary reflector, secondary reflector and fast reflector together form a coaxial two-mirror afocal system for collecting light and compressing the beam aperture, and improving the imaging in the central field of view; and the coaxial two-mirror afocal system can be adjusted separately.

[0008] Furthermore, the aforementioned fast mirror and beam splitter are both placed at an angle of 45° to the optical axis; The fast-reflection mirror shared by four channels is used to compensate for the visual axis shake caused by external disturbances; The four-channel shared spectrometer is used to transmit visible light and laser spectrum and reflect mid-wave infrared and long-wave infrared spectrum.

[0009] Furthermore, the long-wave infrared channel includes a medium-wave-long-wave common lens assembly, a long-wave first reflector, a long-wave first lens, a long-wave second lens, a long-wave second reflector, a long-wave third lens, a long-wave fourth lens, and a long-wave detector, which are sequentially arranged along the optical path. The medium-wave-long-wave shared lens assembly includes a medium-wave-long-wave first shared lens, a medium-wave-long-wave second shared lens, a medium-wave-long-wave third shared lens, a medium-wave-long-wave fourth shared lens, and a medium-long-wave beam splitter, which are sequentially arranged along the optical path. The long-wave infrared spectrum is refracted in sequence by the medium-wave-long-wave first common lens, the medium-wave-long-wave second common lens, the medium-wave-long-wave third common lens, the medium-wave-long-wave fourth common lens, the medium-long-wave spectrometer, the long-wave first reflector, the long-wave first lens, the long-wave second lens, the long-wave second reflector, the long-wave third lens, the long-wave fourth lens, and finally enters the long-wave detector for long-wave infrared channel imaging.

[0010] Furthermore, the medium-wave infrared channel includes a medium-wave-long-wave common lens assembly, a medium-wave first reflector, a medium-wave first lens, a medium-wave second reflector, a medium-wave second lens, a medium-wave third lens, and a medium-wave detector, which are sequentially arranged along the optical path. The medium-wave infrared spectrum is refracted in sequence by the medium-wave-long-wave first common lens, the medium-wave-long-wave second common lens, the medium-wave-long-wave third common lens, the medium-wave-long-wave fourth common lens, the medium-long-wave spectrometer, the medium-wave first reflector, the medium-wave first lens, the medium-wave second reflector, the medium-wave second lens, the medium-wave third lens, and finally enters the medium-wave detector for medium-wave infrared channel imaging.

[0011] Furthermore, the long-wave infrared channel and the medium-wave infrared channel both adopt a secondary imaging structure, and both set the entrance pupil at the exit pupil position of the coaxial two-mirror afocal system, and the exit pupil position matches the cold aperture of the long-wave detector and the medium-wave detector respectively.

[0012] Furthermore, the visible light channel includes a visible light-laser common lens assembly, a visible light first lens, a visible light filter, a visible light reflector and a visible light detector, which are sequentially arranged along the light path. The visible light-laser common lens assembly includes a first visible light-laser common lens, a second visible light-laser common lens, a third visible light-laser common lens, a fourth visible light-laser common lens, a fifth visible light-laser common lens, and a visible light-laser spectroscope, which are sequentially arranged along the optical path. The visible light spectrum is refracted in sequence by the first common lens of visible light-laser, the second common lens of visible light-laser, the third common lens of visible light-laser, the fourth common lens of visible light-laser, the fifth common lens of visible light-laser, reflected by the visible light-laser spectrometer, refracted by the first lens of visible light, refracted by the visible light filter, reflected by the visible light reflector, and finally incident on the visible light detector for visible light channel imaging.

[0013] Furthermore, the laser receiving channel includes a visible light-laser common lens assembly, a laser first lens, a laser filter and a laser receiving sensor which are sequentially arranged along the optical path; The laser spectrum is refracted in sequence by the visible light-laser first common lens, the visible light-laser second common lens, the visible light-laser third common lens, the visible light-laser fourth common lens, the visible light-laser fifth common lens, the visible light-laser spectrometer, the laser first lens, the laser filter, and finally enters the laser receiving sensor to receive the laser receiving channel echo signal.

[0014] Furthermore, the visible light channel and the laser channel both adopt a one-time imaging structure.

[0015] Furthermore, the main reflector surface is a parabola, and the secondary reflector surface is also a parabola.

[0016] Furthermore, the above-mentioned medium-wave infrared channel can be imaged separately.

[0017] Furthermore, the above-mentioned long-wave infrared channel can be imaged separately.

[0018] Furthermore, the above-mentioned visible light channel can be imaged separately.

[0019] The beneficial effects of the present invention are: 1. The present invention discloses a multi-spectral, common-aperture, integrated optoelectronic payload optical system. This system utilizes a coaxial, dual-mirror afocal optical configuration. Light from the target scene is split after passing through the coaxial dual-mirror afocal system and a spectroscope, entering a medium-wave infrared channel, a long-wave infrared channel, a visible light channel, and a laser receiving channel, respectively. The four channels are integrated by sharing a front-group coaxial dual-mirror afocal system and a spectroscope, greatly simplifying the optical path and significantly reducing the size of the optical system. Furthermore, the front-group coaxial dual-mirror afocal system and the imaging systems of each channel can each independently improve imaging. Each channel can be individually adjusted, its imaging performance evaluated, and finally spliced ​​together. This significantly reduces the difficulty and cost of adjustment and shortens the development cycle.

[0020] 2. The present invention realizes the integrated design of a multi-spectral common aperture optical system through a coaxial two-mirror afocal system and a spectroscope. The coaxial two-mirror afocal system has a simple structure, perfect imaging in the central field of view, and can be independently installed and adjusted, reducing the difficulty of installation and adjustment.

[0021] 3. The four-channel shared fast-reflection mirror of the present invention achieves line-of-sight stabilization, and corrects the sensor line-of-sight shaking caused by external disturbances through swing scanning to maintain the stability of the line of sight; 4. The medium-wave infrared channel and long-wave infrared channel of the present invention both adopt a secondary imaging structure, and the visible light channel and laser receiving channel both adopt a primary imaging structure, which greatly simplifies the optical path, reduces the number of lenses in each channel, and increases the system transmittance; The present invention integrates the detection advantages of laser, visible light, medium-wave infrared and long-wave infrared spectrum bands, and can provide fighter aircraft with functions such as optical search and reconnaissance, target identification and tracking, and target indication and positioning, realizing all-weather and all-day information acquisition. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 This is a schematic diagram of the optical path of a multi-spectral common aperture integrated optoelectronic payload optical system according to the present invention; Figure 2 This is a schematic diagram of the optical path of the long-wave infrared channel optical system in a specific embodiment of the present invention; Figure 3 This is a schematic diagram of the optical path of the medium-wave infrared channel optical system in a specific embodiment of the present invention; Figure 4 Schematic diagram of the optical path of the visible light channel optical system in a specific embodiment of the present invention; Figure 5 Schematic diagram of the optical path of the laser receiving channel optical system in a specific embodiment of the present invention.

[0024] Among them, 1 represents the main reflector, 2 represents the secondary reflector, 3 represents the fast reflector, 4 represents the beam splitter, 5 represents the folding mirror, 6 represents the first medium-wave and long-wave shared lens, 7 represents the second medium-wave and long-wave shared lens, 8 represents the third medium-wave and long-wave shared lens, 9 represents the fourth medium-wave and long-wave shared lens, 10 represents the medium- and long-wave beam splitter, 11 represents the first long-wave reflector, 12 represents the first long-wave lens, 13 represents the second long-wave lens, 14 represents the second long-wave reflector, 15 represents the third long-wave lens, 16 represents the fourth long-wave lens, 17 represents the long-wave detector, 18 represents the first medium-wave reflector, 19 represents the first medium-wave lens, 20 represents The second medium-wave reflector, 21 represents the second medium-wave lens, 22 represents the third medium-wave lens, 23 represents the medium-wave detector, 24 represents the first visible light-laser common lens, 25 represents the second visible light-laser common lens, 26 represents the third visible light-laser common lens, 27 represents the fourth visible light-laser common lens, 28 represents the fifth visible light-laser common lens, 29 represents the visible light-laser spectrometer, 30 represents the first visible light lens, 31 represents the visible light filter, 32 represents the visible light reflector, 33 represents the visible light detector, 34 represents the first laser lens, 35 represents the laser filter, and 36 represents the laser receiving sensor. DETAILED DESCRIPTION

[0025] In the following description, the specific implementation details of "a multi-spectral common aperture integrated optoelectronic payload optical system" provided in this specification (such as optical path structure, operation process, optical path reflection principle and example parameters) are for illustrative explanation rather than restrictive definition, and are intended to help those skilled in the art to thoroughly understand the principles and implementation of the present invention; however, those skilled in the art should be clear that these details only represent one of the feasible implementation methods, and the core concept of the present invention can be fully realized by other technical means or workarounds that are not fully described without departing from its spirit, and the omission of conventional experimental methods and device details known in the art in the specification is to avoid redundant information interfering with the understanding of the innovative points. This does not mean that these known technologies are not required during implementation, and technical personnel should be able to supplement and apply them on their own based on professional knowledge.

[0026] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. The following embodiments will help those skilled in the art further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that those skilled in the art may make various changes and improvements without departing from the scope of the present invention, and these are all within the scope of protection of the present invention.

[0027] Embodiment 1. This embodiment provides a multi-spectral common aperture integrated optoelectronic payload optical system, which includes a reflective spectroscopic system, a medium-wave-long-wave common lens assembly, a long-wave infrared channel, a medium-wave infrared channel, a visible light-laser common lens assembly, a visible light channel, and a laser receiving channel; The medium-wave-long-wave common lens assembly serves as a common assembly for the long-wave infrared channel and the medium-wave infrared channel; The visible light-laser shared lens assembly serves as a shared assembly for the visible light channel and the laser receiving channel; The reflection spectroscopic system, the medium-wave and long-wave common lens assembly, and the long-wave infrared channel constitute the long-wave infrared optical system; The reflection spectroscopic system, the medium-wave and long-wave common lens assembly, and the medium-wave infrared channel constitute the medium-wave infrared optical system; The reflective spectroscopic system, the visible light-laser common lens assembly, and the visible light channel constitute a visible light optical system; The reflection spectrometer system, the visible light-laser common lens assembly, and the laser receiving channel constitute a laser receiving optical system; The reflective spectroscopic system is used to reflect the light of the target scene multiple times and divide it into the medium-wave-long-wave spectrum and the visible light-laser spectrum; The medium-wave and long-wave common lens assembly is used to direct the medium-wave and long-wave spectrum bands into the medium-wave infrared channel and the long-wave infrared channel respectively; The visible light-laser common lens assembly is used to guide the visible light-laser spectrum band into the visible light channel and the laser receiving channel respectively.

[0028] The present embodiment discloses a multi-spectral common-aperture integrated optoelectronic payload optical system, which greatly simplifies the optical path and greatly compresses the volume of the optical system through integration and shared components. The imaging systems of each channel can independently improve imaging, and each channel can be individually installed and adjusted to evaluate the imaging performance of each channel before being spliced ​​together as a whole. This can greatly reduce the difficulty and cost of installation and adjustment and shorten the development cycle.

[0029] Implementation Method 2: Combination Figure 1 This embodiment further defines the multi-spectral common aperture integrated optoelectronic payload optical system described in the first embodiment. In this embodiment, the reflective spectroscopic system is further defined, specifically including: like Figure 1 As shown, the reflective spectroscopic system includes a primary reflector 1, a secondary reflector 2, a fast reflector 3, a spectroscope 4 and a folding mirror 5; The light of the target scene is incident on the main reflector 1, and a secondary reflector 2 is provided on the reflecting light path of the main reflector 1, and a quick reflector 3 is provided on the reflecting light path of the secondary reflector 2. A beam splitter 4 is provided on the reflecting light path of the quick reflector 3. The beam splitter 4 is used to divide the light into a medium-wave-long-wave spectrum band and a visible light-laser spectrum band, and is also used to introduce the visible light-laser spectrum band into the visible light channel and the laser channel respectively through the visible light-laser common lens assembly. A folding mirror 5 is provided on the reflecting light path of the beam splitter 4, and is used to introduce the medium-wave-long-wave spectrum band into the medium-wave infrared channel and the long-wave infrared channel respectively through the medium-wave-long-wave common lens assembly.

[0030] Furthermore, in practical applications, further limitations are imposed on the primary reflector 1, the secondary reflector 2, and the quick reflector 3, specifically including: The primary reflector 1, secondary reflector 2 and fast reflector 3 are designed together as a coaxial two-mirror afocal system, which is used to collect light and compress the beam aperture, and improve the imaging in the central field of view; and the coaxial two-mirror afocal system can be installed and adjusted separately, reducing the difficulty of installation and adjustment.

[0031] Furthermore, in practical applications, the quick-reflection mirror 3 is further limited, specifically including: The fast reflex mirror 3 is placed at an angle of 45° to the optical axis. The four channels share the fast reflex mirror 3 to compensate for the visual axis shaking caused by external disturbances.

[0032] Furthermore, in practical applications, the spectrometer 4 is further limited, specifically including: The beam splitter 4 is placed at an angle of 45° to the optical axis. The beam splitter 4 is used to transmit visible light and laser spectrum and reflect medium-wave infrared and long-wave infrared spectrum.

[0033] Furthermore, in actual application, further limitations are made on the primary reflector 1 and the secondary reflector 2, specifically including: the surface shape of the primary reflector 1 is a parabola, and the surface shape of the secondary reflector 2 is a parabola.

[0034] In this embodiment, the materials of the primary reflector 1 and the secondary reflector 2 can both be made of glass-ceramic.

[0035] It can be seen that the multi-spectral common-aperture integrated optoelectronic payload optical system provided in this embodiment realizes the common-aperture integrated design of the laser spectrum, visible spectrum, medium-wave infrared spectrum and long-wave infrared spectrum through the coaxial two-reflection afocal system (primary reflector 1, secondary reflector 2 and fast reflector 3) and the spectrometer 4, effectively improving the all-weather and all-day information acquisition capability of the optoelectronic payload and reducing the volume of the optical system.

[0036] It can also be seen that the long-wave infrared channel and the medium-wave infrared channel described in this embodiment share the main reflector 1, the secondary reflector 2, the quick reflector 3, the beam splitter 4 and the folding mirror 5, and the visible light channel and the laser receiving channel share the main reflector 1, the secondary reflector 2, the quick reflector 3 and the beam splitter 4. The four channels do not share a common transmission mirror group, which is convenient for correcting chromatic aberration and aberration in each band, while effectively improving the transmittance.

[0037] It can also be seen that the four-channel shared fast reflex mirror 3 described in this embodiment can correct the visual axis shaking of the sensor caused by external disturbances and maintain the stability of the visual axis.

[0038] It can also be seen that this embodiment can transmit visible light and laser spectrum bands, and emit medium-wave infrared and long-wave infrared spectrum bands through the spectroscope 4, so that the four spectrum bands enter the long-wave infrared channel, medium-wave infrared channel, visible light channel and laser receiving channel respectively.

[0039] It can also be seen that this embodiment adopts a coaxial dual-mirror afocal optical configuration. Light from the target scene is split after passing through the coaxial dual-mirror afocal system and a beamsplitter, and then enters the medium-wave infrared channel, long-wave infrared channel, visible light channel, and laser receiving channel respectively. The four channels are integrated by sharing the front coaxial dual-mirror afocal system and the beamsplitter, greatly simplifying the optical path and significantly reducing the size of the optical system. The front coaxial dual-mirror afocal system and the imaging system of each channel can each independently improve imaging. Each channel can be independently assembled and adjusted, and its imaging performance can be evaluated before being spliced ​​together. This significantly reduces the difficulty and cost of assembly and adjustment, shortening the development cycle.

[0040] Implementation Method 3: Combination Figure 2 This embodiment is described as a further limitation of the multi-spectral common aperture integrated optoelectronic payload optical system described in any of the above embodiments. In this embodiment, the long-wave infrared channel and the medium-wave-long-wave shared lens assembly are further limited, specifically including: like Figure 2 As shown, the long-wave infrared channel includes a medium-wave-long-wave shared lens assembly, a long-wave first reflector 11, a long-wave first lens 12, a long-wave second lens 13, a long-wave second reflector 14, a long-wave third lens 15, a long-wave fourth lens 16 and a long-wave detector 17, which are arranged in sequence along the optical path; like Figure 2 As shown, the medium-wave-long-wave shared lens assembly includes a medium-wave-long-wave first shared lens 6, a medium-wave-long-wave second shared lens 7, a medium-wave-long-wave third shared lens 8, a medium-wave-long-wave fourth shared lens 9, and a medium-long-wave beam splitter 10, which are sequentially arranged along the optical path; The long-wave infrared spectrum is sequentially refracted by the medium-wave-long-wave first shared lens 6, the medium-wave-long-wave second shared lens 7, the medium-wave-long-wave third shared lens 8, the medium-wave-long-wave fourth shared lens 9, the medium-long-wave spectrometer 10, the long-wave first reflecting mirror 11, the long-wave first lens 12, the long-wave second lens 13, the long-wave second reflecting mirror 14, the long-wave third lens 15, the long-wave fourth lens 16, and finally incident on the long-wave detector 17 for long-wave infrared channel imaging.

[0041] Furthermore, in practical applications, the long-wave infrared channel is further limited, specifically including: The long-wave infrared channel adopts a secondary imaging structure, and the entrance pupil is set at the exit pupil position of the coaxial two-mirror afocal system, and the exit pupil position is matched with the cold aperture of the long-wave detector 17 to achieve 100% cold aperture efficiency.

[0042] In this embodiment, the medium-wave and long-wave common lens material can be made of germanium material, zinc selenide material and zinc sulfide, and the long-wave channel lens material can be made of germanium material, zinc selenide material and IRG206 material, which reduces the difficulty of the processing technology and saves production costs.

[0043] Implementation Method 4: Combination Figure 3 This embodiment is described as a further limitation of the multi-spectral common aperture integrated optoelectronic payload optical system described in any of the above embodiments. In this embodiment, the medium-wave infrared channel is further limited, specifically including: like Figure 3 As shown, the medium-wave infrared channel includes a medium-wave-long-wave common lens assembly, a medium-wave first reflector 18, a medium-wave first lens 19, a medium-wave second reflector 20, a medium-wave second lens 21, a medium-wave third lens 22 and a medium-wave detector 23, which are sequentially arranged along the optical path; The medium-wave infrared spectrum is refracted in sequence by the medium-wave-long-wave first shared lens 6, the medium-wave-long-wave second shared lens 7, the medium-wave-long-wave third shared lens 8, the medium-wave-long-wave fourth shared lens 9, the medium-long-wave spectrometer 10, the medium-wave first reflector 18, the medium-wave first lens 19, the medium-wave second reflector 20, the medium-wave second lens 21, the medium-wave third lens 22, and finally incident on the medium-wave detector 23 for medium-wave infrared channel imaging.

[0044] Furthermore, in practical applications, the medium-wave infrared channel is further limited, specifically including: The medium-wave infrared channel adopts a secondary imaging structure, and the entrance pupil is set at the exit pupil position of the coaxial two-mirror afocal system, and the exit pupil position is matched with the cold aperture of the medium-wave detector 23 to achieve 100% cold aperture efficiency.

[0045] In this embodiment, the medium-wave and long-wave common lens material can be made of germanium, zinc selenide and zinc sulfide, and the medium-wave channel lens material can be made of silicon and germanium, which reduces the difficulty of the processing technology and saves production costs.

[0046] Implementation Method 4: Combination Figure 4 This embodiment is described as a further limitation of the multi-spectral common aperture integrated optoelectronic payload optical system described in any of the above embodiments. In this embodiment, the visible light channel and the visible light-laser shared lens assembly are further limited, specifically including: like Figure 4 As shown, the visible light channel includes a visible light-laser common lens assembly, a visible light first lens 30, a visible light filter 31, a visible light reflector 32 and a visible light detector 33 which are sequentially arranged along the light path; like Figure 4 As shown, the visible light-laser shared lens assembly includes a visible light-laser first shared lens 24, a visible light-laser second shared lens 25, a visible light-laser third shared lens 26, a visible light-laser fourth shared lens 27, a visible light-laser fifth shared lens 28, and a visible light-laser spectroscope 29, which are sequentially arranged along the optical path. The visible light spectrum is refracted in sequence by the visible light-laser first common lens 24, the visible light-laser second common lens 25, the visible light-laser third common lens 26, the visible light-laser fourth common lens 27, the visible light-laser fifth common lens 28, the visible light-laser spectrometer 29, the visible light first lens 30, the visible light filter 31, the visible light reflector 32, and finally incident on the visible light detector 33 for visible light channel imaging.

[0047] Furthermore, in practical applications, the visible light channel is further limited, specifically including: The visible light channel adopts a one-time imaging structure, and the lens material can be a combination of flint glass and crown glass. The number of lenses is small and the system transmittance is high.

[0048] Implementation Method 5: Combination Figure 5 This embodiment is described as a further limitation of the multi-spectral common aperture integrated optoelectronic payload optical system described in any of the above embodiments. In this embodiment, the laser receiving channel is further limited, specifically including: like Figure 5 As shown, the laser receiving channel includes a visible light-laser common lens assembly, a laser first lens 34, a laser filter 35 and a laser receiving sensor 36 which are sequentially arranged along the optical path; The laser spectrum is refracted in sequence by the visible light-laser first common lens 24, the visible light-laser second common lens 25, the visible light-laser third common lens 26, the visible light-laser fourth common lens 27, the visible light-laser fifth common lens 28, the visible light-laser spectrometer 29, the laser first lens 34, the laser filter 35, and finally enters the laser receiving sensor 36 to receive the laser receiving channel echo signal.

[0049] Furthermore, in practical applications, the laser receiving channel is further limited, specifically including: The laser receiving channel adopts a one-time imaging structure, and the lens material can be a combination of flint glass and crown glass. The number of lenses is small and the system transmittance is high.

[0050] Implementation Method 6: Combination Figures 1 to 5 This embodiment describes a multi-spectral common-aperture integrated optoelectronic payload optical system according to the above embodiment. This embodiment provides a specific multi-spectral common-aperture integrated optoelectronic payload optical system, including a main reflector 1, a secondary reflector 2, a quick reflector 3, a spectroscope 4, a folding mirror 5, a long-wave infrared channel, a medium-wave infrared channel, a visible light channel and a laser receiving channel; light from a target scene is incident on the main reflector 1, a secondary reflector 2 is provided on the reflecting light path of the main reflector 1, a quick reflector 3 is provided on the reflecting light path of the secondary reflector 2, a spectroscope 4 is provided on the reflecting light path of the quick reflector 3, the spectroscope 4 is used to divide the light into a medium-wave-long-wave spectrum and a visible light-laser spectrum, a folding mirror 5 is provided on the reflecting light path of the spectroscope 4, and is used to guide the medium-wave-long-wave spectrum into the medium-wave infrared channel and the long-wave infrared channel respectively, and the visible light-laser spectrum enters the visible light channel and the laser channel respectively through the spectroscope 4; The long-wave infrared channel includes a medium-wave-long-wave first shared lens 6, a medium-wave-long-wave second shared lens 7, a medium-wave-long-wave third shared lens 8, a medium-wave-long-wave fourth shared lens 9, a medium- and long-wave spectrometer 10, a long-wave first reflector 11, a long-wave first lens 12, a long-wave second lens 13, a long-wave second reflector 14, a long-wave third lens 15, a long-wave fourth lens 16, and a long-wave detector 17, which are sequentially arranged along the optical path. The long-wave infrared spectrum is sequentially refracted by the medium-wave-long-wave first shared lens 6, the medium-wave-long-wave second shared lens 7, the medium-wave-long-wave third shared lens 8, the medium-wave-long-wave fourth shared lens 9, the medium- and long-wave spectrometer 10, the long-wave first reflector 11, the long-wave first lens 12, the long-wave second lens 13, the long-wave second reflector 14, the long-wave third lens 15, and the long-wave fourth lens 16, and finally enters the long-wave detector 17 for long-wave infrared channel imaging. The medium-wave infrared channel includes a medium-wave-long-wave first shared lens 6, a medium-wave-long-wave second shared lens 7, a medium-wave-long-wave third shared lens 8, a medium-wave-long-wave fourth shared lens 9, a medium- and long-wave beam splitter 10, a medium-wave first reflector 18, a medium-wave first lens 19, a medium-wave second reflector 20, a medium-wave second lens 21, a medium-wave third lens 22, and a medium-wave detector 23, which are sequentially arranged along the optical path. The medium-wave infrared spectrum is sequentially refracted by the medium-wave-long-wave first shared lens 6, the medium-wave-long-wave second shared lens 7, the medium-wave-long-wave third shared lens 8, the medium-wave-long-wave fourth shared lens 9, the medium- and long-wave beam splitter 10, the medium-wave first reflector 18, the medium-wave first lens 19, the medium-wave second reflector 20, the medium-wave second lens 21, the medium-wave third lens 22, and finally incident on the medium-wave detector 23 for medium-wave infrared channel imaging; The visible light channel includes a first visible light-laser common lens 24, a second visible light-laser common lens 25, a third visible light-laser common lens 26, a fourth visible light-laser common lens 27, a fifth visible light-laser common lens 28, a visible light-laser spectroscope 29, a first visible light lens 30, a visible light filter 31, a visible light reflector 32 and a visible light detector 33, which are sequentially arranged along the light path. The visible light spectrum is sequentially refracted by the first visible light-laser common lens 24, the second visible light-laser common lens 25, the third visible light-laser common lens 26, the fourth visible light-laser common lens 27, the fifth visible light-laser common lens 28, reflected by the visible light-laser spectroscope 29, the first visible light lens 30, the visible light filter 31, and the visible light reflector 32, and finally enters the visible light detector 33 for visible light channel imaging. The laser receiving channel includes a visible light-laser first common lens 24, a visible light-laser second common lens 25, a visible light-laser third common lens 26, a visible light-laser fourth common lens 27, a visible light-laser fifth common lens 28, a visible light-laser spectrometer 29, a laser first lens 34, a laser filter 35 and a laser receiving sensor 36, which are arranged in sequence along the optical path. The laser spectrum is refracted in sequence by the visible light-laser first common lens 24, the visible light-laser second common lens 25, the visible light-laser third common lens 26, the visible light-laser fourth common lens 27, the visible light-laser fifth common lens 28, the visible light-laser spectrometer 29, the laser first lens 34, the laser filter 35, and finally enters the laser receiving sensor 36 to receive the laser receiving channel echo signal.

[0051] like Figure 1 As shown, the long-wave infrared channel and the medium-wave infrared channel share the main reflector 1, the secondary reflector 2, the fast reflector 3, the beam splitter 4 and the folding mirror 5. The optical systems of the long-wave infrared channel and the medium-wave infrared channel are respectively as shown in FIG. Figure 2 and Figure 3 As shown; the visible light channel and the laser receiving channel share the main reflector 1, the secondary reflector 2, the fast reflector 3 and the beam splitter 4, and the optical system of the visible light channel and the optical system of the laser receiving channel are respectively as shown in FIG. Figure 4 and Figure 5 As shown; Furthermore, the long-wave infrared channel and the medium-wave infrared channel share the primary reflector 1, the secondary reflector 2, the quick reflector 3, the beam splitter 4, and the folding mirror 5; the visible light channel and the laser receiving channel share the primary reflector 1, the secondary reflector 2, the quick reflector 3, and the beam splitter 4. The four channels do not share a common transmission mirror group, which facilitates the correction of chromatic aberration and aberration in each band, while effectively improving the transmittance. The primary reflector 1, secondary reflector 2 and fast reflector 3 are designed as a coaxial two-mirror afocal system, which is used to collect light and compress the beam aperture, improve the imaging of the central field of view, and can be installed and adjusted separately to reduce the difficulty of installation and adjustment; The base materials of the primary reflector 1 and the secondary reflector 2 can both be glass-ceramic or silicon carbide. The primary reflector 1 has a parabolic surface, and the secondary reflector 2 has a parabolic surface. The fast reflex mirror 3 is placed at a 45° tilt with the optical axis. The four channels share the fast reflex mirror 3, which corrects the visual axis shaking caused by external disturbances by swinging and scanning to maintain the stability of the visual axis. The spectroscope 4 is placed at an angle of 45° to the optical axis. The spectroscope 4 transmits visible light and laser spectrum, and reflects medium-wave infrared and long-wave infrared spectrum. The four spectrums enter the medium-wave infrared channel, long-wave infrared channel, visible light channel and laser receiving channel respectively. The base material of the beam splitter 4 is selected to be a material that transmits visible light and laser spectrum, and the front and back surfaces are coated with a beam splitting film and an anti-reflection film respectively; The folding mirror 5 is placed at an angle of 45° to the optical axis, and the medium-wave infrared channel and the long-wave infrared channel share the folding mirror 5 to achieve folding of the optical path; The base material of the folding mirror 5 can be quartz or H-K9L, with a reflective film coated on the surface; The long-wave infrared channel adopts a secondary imaging structure, and the entrance pupil is set at the exit pupil position of the coaxial two-mirror afocal system. The exit pupil position matches the cold stop of the long-wave detector 17 to achieve 100% cold stop efficiency. The medium-wave infrared channel adopts a secondary imaging structure, and the entrance pupil is set at the exit pupil position of the coaxial two-mirror afocal system. The exit pupil position matches the cold stop of the medium-wave detector 23 to achieve 100% cold stop efficiency. The visible light channel adopts a one-time imaging structure and adopts a reasonable combination of high-refractive-index, low-dispersion optical elements and low-refractive-index, high-dispersion optical elements to solve the chromatic aberration and secondary spectrum correction of the optical system. The number of lenses used is small and the system transmittance is high. The laser receiving channel adopts a one-time imaging structure, uses a small number of lenses, and has a high system transmittance.

[0052] In summary, this embodiment provides a multi-spectral, common-aperture, integrated optoelectronic payload optical system employing a coaxial, dual-mirror afocal optical configuration. Light from the target scene is split through the coaxial dual-mirror afocal system and a spectrometer, entering the mid-wave infrared channel, long-wave infrared channel, visible light channel, and laser receiving channel, respectively. The four channels are integrated by sharing the front coaxial dual-mirror afocal system and spectrometer, greatly simplifying the optical path and significantly reducing the size of the optical system. Furthermore, the front coaxial dual-mirror afocal system and the imaging systems of each channel can each independently perform imaging. Each channel can be individually adjusted, its imaging performance evaluated, and finally spliced ​​together, significantly reducing the difficulty and cost of adjustment and shortening the development cycle.

[0053] Furthermore, the integrated design of the multi-spectral common-aperture optical system is realized through the coaxial two-mirror afocal system and the spectrometer. The coaxial two-mirror afocal system has a simple structure, perfect imaging in the central field of view, and can be installed and adjusted separately, reducing the difficulty of installation and adjustment.

[0054] Furthermore, the four channels share a fast-reflection mirror to achieve line-of-sight stabilization. By sweeping, the sensor's line-of-sight shake caused by external disturbances is corrected to maintain a stable line of sight. Furthermore, the medium-wave infrared channel and the long-wave infrared channel both adopt a secondary imaging structure, and the visible light channel and the laser receiving channel both adopt a primary imaging structure, which greatly simplifies the optical path, reduces the number of lenses in each channel, and improves the system transmittance. It can be seen that the multi-spectral common-aperture integrated optoelectronic payload optical system described in this embodiment integrates the detection advantages of laser, visible light, medium-wave infrared and long-wave infrared spectrum bands, and can provide fighter aircraft with optical search and reconnaissance, target identification and tracking, and target indication and positioning functions, realizing all-weather and all-day information acquisition.

[0055] Implementation VII: This implementation describes in detail the multi-spectral common aperture integrated optoelectronic payload optical system described in the above implementation with reference to specific parameters. The multi-spectral common aperture integrated optoelectronic payload optical system described in this embodiment has a long-wave infrared optical system with a focal length of 450 mm, which is suitable for a refrigerated long-wave infrared detector with a resolution of 640×512, a pixel pitch of 25 μm×25 μm, and a cold shield F number of F2; a medium-wave infrared optical system with a focal length of 720 mm, which is suitable for a refrigerated medium-wave infrared detector with a resolution of 1280×1024, a pixel pitch of 12 μm×12 μm, and a cold shield F number of F4; a visible light optical system with a focal length of 1080 mm, which is suitable for a visible light detector with a resolution of 5120×4096 and a pixel pitch of 4.5 μm×4.5 μm; and a laser receiving optical system with a field of view of 2 mrad. In this embodiment, the primary reflector 1, the secondary reflector 2 and the fast reflector 3 are designed as a coaxial two-mirror afocal system for collecting light and compressing the beam aperture. The central field of view improves imaging and can be individually adjusted to reduce the difficulty of adjustment. In this embodiment, the preferred primary reflector 1 has a parabolic surface and is made of glass-ceramics. The preferred secondary reflector 2 has a parabolic surface and is made of glass-ceramics. In this embodiment, the fast reflex mirror 3 is preferably placed at an angle of 45° to the optical axis, and the four channels share the fast reflex mirror 3 to compensate for visual axis shaking caused by external disturbances.

[0056] The preferred beam splitter 4 in this embodiment is placed at an angle of 45° to the optical axis. The material is H-K9L, with a thickness of 10 mm. The front and back surfaces are coated with a beam splitter film and an anti-reflection film, respectively. The beam splitter transmits 0.6 μm to 0.9 μm and 1.064 μm, and reflects 3.7 μm to 4.8 μm and 7.7 μm to 9.5 μm. The preferred medium- and long-wavelength beam splitter 10 in this embodiment is placed at an angle of 45° to the optical axis. The material is silicon, the thickness is 10 mm, and the front and back surfaces are coated with a beam splitter film and an anti-reflection film, respectively. The transmission is 3.7 μm to 4.8 μm and the reflection is 7.7 μm to 9.5 μm. The preferred visible light-laser spectrometer 29 in this embodiment is placed at a 45° tilt relative to the optical axis. The material used is H-K9L, with a thickness of 10 mm. The front and back surfaces are coated with a spectrometer film and an anti-reflection film, respectively. The transmittance is 1.064 μm and the reflection is 0.6 μm to 0.9 μm. In this embodiment, the preferred folding mirror 5 is placed at an angle of 45° to the optical axis, and the material used is H-K9L, coated with 3.7μm~4.8μm and 7.7μm~9.5μm high reflective film; In this embodiment, the preferred long-wave first reflector 11 and long-wave second reflector 14 are placed at an angle of 45° to the optical axis, and are made of H-K9L and coated with a 7.7μm~9.5μm high reflective film; In this embodiment, the preferred medium-wave first reflector 18 and medium-wave second reflector 20 are both placed at an angle of 45° to the optical axis, and are made of H-K9L and coated with a 3.7μm~4.8μm high-reflection film; The preferred visible light reflector 32 in this embodiment is placed at an angle of 45° to the optical axis, and the material used is H-K9L, coated with a 0.6μm~0.9μm high reflective film; In this embodiment, the preferred medium-wave-long-wave first shared lens 6, medium-wave-long-wave second shared lens 7, medium-wave-long-wave third shared lens 8 and medium-wave-long-wave fourth shared lens 9 are all made of germanium, zinc selenide and zinc sulfide materials; In this embodiment, the preferred long-wave first lens 12, long-wave second lens 13, long-wave third lens 15, and long-wave fourth lens 16 are all made of germanium, zinc selenide, and IRG206 materials; In this embodiment, the preferred medium-wavelength first lens 19, medium-wavelength second lens 21 and medium-wavelength third lens 22 are all made of silicon and germanium materials; In this embodiment, the preferred visible light-laser first shared lens 24, visible light-laser second shared lens 25, visible light-laser third shared lens 26, visible light-laser fourth shared lens 27, visible light-laser fifth shared lens 28, visible light first lens 30, and laser first lens 34 are all made of flint glass and crown glass.

[0057] In this embodiment, the specific parameter data of each lens in the long-wave infrared optical system are shown in Table 1; Table 1

[0058] In this embodiment, the aspheric coefficients used in the long-wave infrared optical system are shown in Table 2; Table 2

[0059] The aspheric surfaces mentioned in the above lenses are all even aspheric surfaces, and their expressions are as follows:

[0060] Where, Aspheric surface along the optical axis at a height of When the position is , the distance from the vertex of the aspheric surface is high, is the radius of curvature, is the cone coefficient, 、 、 is the aspheric coefficient.

[0061] In this embodiment, the specific parameter data of each lens in the medium-wave infrared optical system are shown in Table 3; Table 3

[0062] In this embodiment, the aspheric coefficients used in the medium-wave infrared optical system are shown in Table 4: Table 4

[0063] The aspheric surfaces mentioned in the above lenses are all even aspheric surfaces, and their expressions are as follows:

[0064] In the formula Aspheric surface along the optical axis at a height of When the position is , the distance from the vertex of the aspheric surface is high, is the radius of curvature, is the cone coefficient, 、 、 is the aspheric coefficient; In this embodiment, the specific parameter data of each lens in the visible light optical system are shown in Table 5; Table 5

[0065] In this embodiment, the specific parameter data of each lens in the laser receiving optical system are shown in Table 6; Table 6

[0066] In the above description, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, the terms "first" and "second" may explicitly or implicitly include at least one of the features.

[0067] In the above description, it should also be understood that when used in this specification and the appended claims, the term "comprising" indicates the presence of the described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or their collections.

[0068] The above further describes the technical solution provided by the present invention in detail through several specific embodiments in order to highlight the advantages and benefits of the technical solution provided by the present invention. However, the several specific embodiments described above are not intended to limit the present invention. Any reasonable changes and improvements to the present invention, reasonable combinations of implementation methods and equivalent replacements based on the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multi-spectral common aperture integrated optoelectronic payload optical system, characterized in that: It includes a reflection spectrometer system, a medium-wave and long-wave shared lens assembly, a long-wave infrared channel, a medium-wave infrared channel, a visible light and laser shared lens assembly, a visible light channel, and a laser receiving channel; The medium-wave-long-wave common lens assembly serves as a common assembly for the long-wave infrared channel and the medium-wave infrared channel; The visible light-laser shared lens assembly serves as a shared component for the visible light channel and the laser receiving channel; The reflection spectroscopic system, the medium-wave and long-wave common lens assembly, and the long-wave infrared channel constitute the long-wave infrared optical system; The reflection spectroscopic system, the medium-wave and long-wave common lens assembly, and the medium-wave infrared channel constitute the medium-wave infrared optical system; The reflective spectroscopic system, the visible light-laser common lens assembly, and the visible light channel constitute a visible light optical system; The reflection spectrometer system, the visible light-laser common lens assembly, and the laser receiving channel constitute a laser receiving optical system; The reflective spectroscopic system is used to reflect the light of the target scene multiple times and divide it into the medium-wave-long-wave spectrum and the visible light-laser spectrum; The medium-wave and long-wave common lens assembly is used to direct the medium-wave and long-wave spectrum bands into the medium-wave infrared channel and the long-wave infrared channel respectively; The visible light-laser common lens assembly is used to guide the visible light-laser spectrum band into the visible light channel and the laser receiving channel respectively.

2. The multi-spectral common aperture integrated optoelectronic payload optical system according to claim 1, characterized in that: The reflective spectroscopic system comprises a primary reflector (1), a secondary reflector (2), a fast reflector (3), a spectroscope (4) and a folding mirror (5); Light from a target scene is incident on a main reflector (1); a secondary reflector (2) is provided on the reflected light path of the main reflector (1); a quick reflector (3) is provided on the reflected light path of the secondary reflector (2); a beam splitter (4) is provided on the reflected light path of the quick reflector (3); the beam splitter (4) is used to split the light into a medium-wave-long-wave spectrum segment and a visible light-laser spectrum segment, and is also used to guide the visible light-laser spectrum segment into a visible light channel and a laser channel respectively through a visible light-laser common lens assembly; a folding mirror (5) is provided on the reflected light path of the beam splitter (4) and is used to guide the medium-wave-long-wave spectrum segment into a medium-wave infrared channel and a long-wave infrared channel respectively through the medium-wave-long-wave common lens assembly.

3. The multi-spectral common aperture integrated optoelectronic payload optical system according to claim 2, characterized in that: The primary reflector (1), the secondary reflector (2) and the fast reflector (3) together form a coaxial two-mirror afocal system for collecting light and compressing the beam aperture, and improving the imaging of the central field of view; and the coaxial two-mirror afocal system can be independently adjusted.

4. The multi-spectral common aperture integrated optoelectronic payload optical system according to claim 3, characterized in that: The fast mirror (3) and the beam splitter (4) are both placed at an angle of 45° to the optical axis; The fast reflection mirror (3) shared by the four channels is used to compensate for the visual axis shaking caused by external disturbances; The four-channel common spectroscope (4) is used for transmitting visible light and laser spectrum and reflecting mid-wave infrared and long-wave infrared spectrum.

5. The multi-spectral common aperture integrated optoelectronic payload optical system according to claim 4, characterized in that: The long-wave infrared channel comprises a medium-wave-long-wave common lens assembly, a long-wave first reflector (11), a long-wave first lens (12), a long-wave second lens (13), a long-wave second reflector (14), a long-wave third lens (15), a long-wave fourth lens (16) and a long-wave detector (17) which are sequentially arranged along the optical path. The medium-wave-long-wave shared lens assembly comprises a medium-wave-long-wave first shared lens (6), a medium-wave-long-wave second shared lens (7), a medium-wave-long-wave third shared lens (8), a medium-wave-long-wave fourth shared lens (9), and a medium-long-wave spectroscope (10) which are sequentially arranged along the optical path. The long-wave infrared spectrum is sequentially refracted by the medium-wave-long-wave first shared lens (6), refracted by the medium-wave-long-wave second shared lens (7), refracted by the medium-wave-long-wave third shared lens (8), refracted by the medium-wave-long-wave fourth shared lens (9), reflected by the medium-long-wave spectroscope (10), reflected by the long-wave first reflector (11), refracted by the long-wave first lens (12), refracted by the long-wave second lens (13), reflected by the long-wave second reflector (14), refracted by the long-wave third lens (15), refracted by the long-wave fourth lens (16), and finally incident on the long-wave detector (17) for long-wave infrared channel imaging.

6. The multi-spectral common aperture integrated optoelectronic payload optical system according to claim 5, characterized in that: The medium-wave infrared channel comprises a medium-wave-long-wave common lens assembly, a medium-wave first reflector (18), a medium-wave first lens (19), a medium-wave second reflector (20), a medium-wave second lens (21), a medium-wave third lens (22) and a medium-wave detector (23) which are sequentially arranged along the optical path. The medium-wave infrared spectrum is sequentially refracted by the medium-wave-long-wave first shared lens (6), refracted by the medium-wave-long-wave second shared lens (7), refracted by the medium-wave-long-wave third shared lens (8), refracted by the medium-wave-long-wave fourth shared lens (9), refracted by the medium-long-wave spectroscope (10), reflected by the medium-wave first reflector (18), refracted by the medium-wave first lens (19), reflected by the medium-wave second reflector (20), refracted by the medium-wave second lens (21), refracted by the medium-wave third lens (22), and finally incident on the medium-wave detector (23) for medium-wave infrared channel imaging.

7. The multi-spectral common aperture integrated optoelectronic payload optical system according to claim 6, characterized in that: Both the long-wave infrared channel and the medium-wave infrared channel adopt a secondary imaging structure, and both set the entrance pupil at the exit pupil position of the coaxial two-mirror afocal system, and the exit pupil position is matched with the cold aperture of the long-wave detector (17) and the medium-wave detector (23) respectively.

8. The multi-spectral common aperture integrated optoelectronic payload optical system according to claim 1, characterized in that: The visible light channel comprises a visible light-laser common lens assembly, a visible light first lens (30), a visible light filter (31), a visible light reflector (32) and a visible light detector (33) which are sequentially arranged along the light path. The visible light-laser common lens assembly comprises a first visible light-laser common lens (24), a second visible light-laser common lens (25), a third visible light-laser common lens (26), a fourth visible light-laser common lens (27), a fifth visible light-laser common lens (28), and a visible light-laser spectroscope (29), which are sequentially arranged along the optical path. The visible light spectrum is sequentially refracted by a first visible light-laser common lens (24), a second visible light-laser common lens (25), a third visible light-laser common lens (26), a fourth visible light-laser common lens (27), a fifth visible light-laser common lens (28), reflected by a visible light-laser spectroscope (29), refracted by a first visible light lens (30), refracted by a visible light filter (31), reflected by a visible light reflector (32), and finally incident on a visible light detector (33) for visible light channel imaging.

9. The multi-spectral common aperture integrated optoelectronic payload optical system according to claim 8, characterized in that: The laser receiving channel comprises a visible light-laser common lens assembly, a laser first lens (34), a laser filter (35) and a laser receiving sensor (36) which are sequentially arranged along the optical path. The laser spectrum is sequentially refracted by the first visible light-laser common lens (24), the second visible light-laser common lens (25), the third visible light-laser common lens (26), the fourth visible light-laser common lens (27), the fifth visible light-laser common lens (28), the visible light-laser spectroscope (29), the first laser lens (34), the laser filter (35), and finally enters the laser receiving sensor (36) for receiving the laser receiving channel echo signal.

10. The multi-spectral common aperture integrated optoelectronic payload optical system according to claim 9, characterized in that: Both the visible light channel and the laser channel adopt a one-time imaging structure.

Images