Full spectrum imaging detection system

Abstract

The present invention relates to the field of spectral imaging, and provides a full-spectrum imaging detection system, including a primary mirror, a secondary mirror, a field of view separator, a visible short-wave rear optical path system, and a medium- and long-wave rear optical path system; the visible short-wave rear optical path system includes a first deflection mirror, a second deflection mirror, a third reflector, a fourth reflector, and a fifth reflector; light sequentially passes through the primary mirror, the secondary mirror, the first deflection mirror, the second deflection mirror, the third reflector, the fourth reflector, and the fifth reflector to perform visible short-wave band imaging; the medium- and long-wave rear optical path system includes a third deflection mirror, a fourth deflection mirror, a sixth reflector, a seventh reflector, and an eighth reflector; light sequentially passes through the primary mirror, the secondary mirror, the third deflection mirror, the fourth deflection mirror, the sixth reflector, the seventh reflector, and the eighth reflector to perform medium- and long-wave band imaging. The invention is used to solve the defect that the satellite-borne large-aperture ground detection camera in the prior art can often only perform imaging of a single spectrum and cannot meet the requirement of synchronous acquisition of high-resolution full-spectrum information. The scheme of the present application can complete imaging detection of the full spectrum on a single payload.

Description

Technical Field

[0001] The present invention relates to the technical field of ground detection imaging, and in particular to a full-spectrum imaging detection system. Background Art

[0002] Optical cameras are mainly based on the lens performing a series of reflections and transmissions on the incident light to form an image.

[0003] Due to the influence of spacecraft, the size and weight of the satellite-borne imaging system are limited to a certain extent, making it difficult to deploy multiple imaging devices of different bands on the spacecraft. With the higher requirements for image resolution, response speed and simultaneous acquisition of multi-band images in satellite-borne earth detection, satellite-borne earth detection cameras in related technologies can often only perform imaging of a single spectral band, with limited spectral coverage and low resolution, which cannot meet the needs of higher quality image data and simultaneous acquisition of multi-band images. Summary of the invention

[0004] The present invention provides a full-spectrum imaging detection system to solve the defect that the satellite-borne earth detection camera in the prior art can often only perform imaging of a single spectrum and cannot meet the needs of practical applications. The solution of the present application can complete full-spectrum imaging detection on a single payload.

[0005] The present invention provides a full-spectrum imaging detection system, comprising:

[0006] Primary mirror, secondary mirror, field separator, visible short-wave rear optical path system, medium- and long-wave rear optical path system;

[0007] The incident light is reflected by the primary mirror to the secondary mirror. After being reflected by the secondary mirror, the light is separated into a visible short-wave channel and a medium- and long-wave channel by the field of view separator. The light of the visible short-wave channel is imaged by the visible short-wave rear optical path system, and the light of the medium- and long-wave channel is imaged by the medium- and long-wave rear optical path system.

[0008] The visible short-wave rear optical path system comprises a first deflecting mirror, a second deflecting mirror, a third reflecting mirror, a fourth reflecting mirror and a fifth reflecting mirror;

[0009] The first deflection mirror and the second deflection mirror form an angle of 45° with the incident light, and are used to reflect the light of the visible short-wave channel to the third reflector, the fourth reflector and the fifth reflector for imaging;

[0010] The radius of curvature R3 of the third reflector satisfies: ;

[0011] The curvature radius R4 of the fourth reflector satisfies: ;

[0012] The curvature radius R5 of the fifth reflector satisfies: ;

[0013] The medium and long wave rear optical path system comprises a third deflecting mirror, a fourth deflecting mirror, a sixth reflecting mirror, a seventh reflecting mirror and an eighth reflecting mirror;

[0014] The third deflection mirror and the fourth deflection mirror form an angle of 45° with the incident light, and are used to reflect the light of the medium and long wave channel to the sixth reflector, the seventh reflector and the eighth reflector for imaging;

[0015] The curvature radius R6 of the sixth reflector satisfies: ;

[0016] The curvature radius R7 of the seventh reflector satisfies: ;

[0017] The curvature radius R8 of the eighth reflector satisfies: .

[0018] According to the full-spectrum imaging detection system provided by the present invention, the primary mirror is an eighth-order even-order aspheric reflector;

[0019] The secondary mirror, the fourth reflecting mirror and the seventh reflecting mirror are second-order aspherical reflecting mirrors.

[0020] According to the full-spectrum imaging detection system provided by the present invention, the first deflection mirror and the second deflection mirror are plane mirrors, and the third deflection mirror and the fourth deflection mirror are plane mirrors.

[0021] According to the full-spectrum imaging detection system provided by the present invention, the aspherical surface shape of the primary mirror conforms to the following formula:

[0022]

[0023] Where Z is the vector height, c is the curvature, r is the radial distance from a point on the reflector to the optical axis, k is the cone coefficient, and a4, a5 and a8 are all aspherical coefficients.

[0024] According to the full spectrum imaging detection system provided by the present invention, the primary mirror satisfies:

[0025] a4=-1.98E -13 , a6=1.40E -21 , a8=-1.98E -28 , k=-1.28.

[0026] According to the full-spectrum imaging detection system provided by the present invention, the third reflector, the fifth reflector, the sixth reflector and the eighth reflector are free-form surface reflectors;

[0027] The third reflector, the fifth reflector, the sixth reflector and the eighth reflector meet the following formula:

[0028] (1)

[0029] (2)

[0030] Where z is the sag, c is the curvature, r is the radial distance from a point on the reflector to the optical axis, k is the cone coefficient, N is the total number of polynomial coefficients in the series, and A i is the coefficient of the i-th expanded polynomial, Represents the power series in the x and y directions, where M is the size of the highest power.

[0031] According to the full spectrum imaging detection system provided by the present invention, the third reflector satisfies:

[0032] k=-0.52.

[0033] According to the full spectrum imaging detection system provided by the present invention, the fifth reflector satisfies:

[0034] k=-0.16.

[0035] According to the full spectrum imaging detection system provided by the present invention, the sixth reflector satisfies:

[0036] k=-0.52.

[0037] According to the full spectrum imaging detection system provided by the present invention, the eighth reflector satisfies:

[0038] k=0.16.

[0039] In the full-spectrum imaging detection system disclosed in the present application, a field of view separator is provided to separate the incident light into lights of different channels, and the lights of different channels are imaged separately based on different imaging components. Inside the imaging component, the incident light is reflected multiple times by controlling the layout angle, curvature radius and surface shape of the reflector, thereby achieving full-spectrum imaging detection in a limited space. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the 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 creative work.

[0041] Figure 1 This is one of the structural schematic diagrams of the full-spectrum imaging detection system provided by an embodiment of the present invention;

[0042] Figure 2 This is the second structural schematic diagram of the full-spectrum imaging detection system provided by an embodiment of the present invention;

[0043] Figure 3 This is the third structural schematic diagram of the full-spectrum imaging detection system provided by an embodiment of the present invention;

[0044] Figure 4 It is one of the optical transfer function diagrams of the full-spectrum imaging detection system provided by an embodiment of the present invention;

[0045] Figure 5 This is the second optical transfer function diagram of the full-spectrum imaging detection system provided by an embodiment of the present invention;

[0046] Figure 6 It is one of the optical point diagrams of the full-spectrum imaging detection system provided by the embodiment of the present invention;

[0047] Figure 7 This is the third optical transfer function diagram of the full-spectrum imaging detection system provided by an embodiment of the present invention.

[0048] in:

[0049] 1-primary mirror; 2-secondary mirror; 3-field separator; 4-first deflection mirror;

[0050] 5-second deflecting mirror; 6-third reflecting mirror; 7-fourth reflecting mirror; 8-fifth reflecting mirror;

[0051] 9-third deflecting mirror; 10-fourth deflecting mirror; 11-sixth reflecting mirror; 12-seventh reflecting mirror;

[0052] 13- Eighth reflector. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] Figure 1 It is a schematic diagram of the optical path of the full-spectrum imaging detection system provided by an embodiment of the present invention.

[0055] Figure 2 It is a schematic diagram of the visible shortwave channel optical path of the full-spectrum imaging detection system provided by an embodiment of the present invention.

[0056] Figure 3 It is a schematic diagram of the medium and long wave channels of the full spectrum imaging detection system provided in an embodiment of the present invention.

[0057] like Figure 1 As shown, this embodiment provides a full-spectrum imaging detection system, including:

[0058] Primary mirror 1, secondary mirror 2, field separator 3, visible short-wave rear optical path system, medium- and long-wave rear optical path system;

[0059] The incident light is reflected by the primary mirror to the secondary mirror. After being reflected by the secondary mirror, the light is separated into a visible short-wave channel and a medium- and long-wave channel by the field of view separator. The light of the visible short-wave channel is imaged by the visible short-wave rear optical path system, and the light of the medium- and long-wave channel is imaged by the medium- and long-wave rear optical path system.

[0060] The visible short-wave rear optical path system includes a first deflection mirror 4, a second deflection mirror 5, a third reflector 6, a fourth reflector 7 and a fifth reflector 8;

[0061] The first deflection mirror and the second deflection mirror form an angle of 45° with the incident light, and are used to reflect the light of the visible short-wave channel to the third reflector, the fourth reflector and the fifth reflector for imaging;

[0062] The radius of curvature R3 of the third reflector satisfies: ;

[0063] The curvature radius R4 of the fourth reflector satisfies: ;

[0064] The curvature radius R5 of the fifth reflector satisfies: ;

[0065] The medium and long wave rear optical path system includes a third deflection mirror 9, a fourth deflection mirror 10, a sixth reflector 11, a seventh reflector 12 and an eighth reflector 13;

[0066] The third deflection mirror and the fourth deflection mirror form an angle of 45° with the incident light, and are used to reflect the light of the medium and long wave channel to the sixth reflector, the seventh reflector and the eighth reflector for imaging;

[0067] The curvature radius R6 of the sixth reflector satisfies: ;

[0068] The curvature radius R7 of the seventh reflector satisfies: ;

[0069] The curvature radius R8 of the eighth reflector satisfies: .

[0070] in Figure 2 This is the optical path diagram of the primary mirror, secondary mirror, field separator and visible short-wave rear optical path system. Figure 3 The optical path diagram of the primary mirror, secondary mirror, field separator and medium and long wave rear optical path system.

[0071] In the scheme of this embodiment, after the incident light is reflected by the primary mirror and the secondary mirror, the visible short-wave and medium- and long-wave fields of view are separated by a field of view separator, and then the light of the visible short-wave field of view enters the visible short-wave rear optical path system, and the visible short-wave is imaged with high resolution and wide width by the third reflector, the fourth reflector and the fifth reflector. At the same time, the light of the medium- and long-wave field of view enters the medium- and long-wave rear optical path system, and the medium- and long-wave is imaged with high resolution and wide width by the sixth reflector, the seventh reflector and the eighth reflector. This scheme makes full use of the spatial layout, and by adopting an optical path with five reflections, the detection system has a compact structure and a smaller size, which greatly reduces the volume and weight of the payload, and simultaneously obtains full-spectrum information, which can be used in application fields such as high-precision urban remote sensing, exploration of key mineralization belts, and earth science research.

[0072] In practical applications, the first deflection mirror and the second deflection mirror can form an angle of 45 degrees with the incident light, that is, the first deflection mirror and the second deflection mirror are placed vertically. In this way, the light of the visible shortwave channel of the optical path system after being incident on the visible shortwave can be directly incident on the second deflection mirror after being reflected by the first deflection mirror, and can be incident on the third reflector after being reflected by the second deflection mirror.

[0073] Based on the same principle, the third deflection mirror and the fourth deflection mirror can form an angle of 45 degrees with the incident light, that is, the third deflection mirror and the fourth deflection mirror are placed vertically, so that the light of the medium and long wave channel of the optical path system after the incident medium and long wave can be directly incident on the fourth deflection mirror after reflection by the third deflection mirror, and then incident on the sixth reflector after reflection by the fourth deflection mirror.

[0074] In practical applications, the radius of curvature of the third reflector may be -1236.6 millimeters (mm), the radius of curvature of the fourth reflector may be -611.43 mm, the radius of curvature of the fifth reflector may be -624.43 mm, the radius of curvature of the sixth reflector may be -222.441 mm, the radius of curvature of the seventh reflector may be -96.48 mm, and the radius of curvature of the eighth reflector may be -115.497 mm.

[0075] In the full-spectrum imaging detection system disclosed in the present application, a field of view separator is provided to separate the incident light into lights of different fields of view, and the lights of different fields of view are imaged separately based on different imaging components. Inside the imaging component, the incident light is reflected multiple times by controlling the layout angle and curvature radius of the reflector, thereby achieving full-spectrum imaging detection in a limited space.

[0076] In an exemplary embodiment, the third reflector, the fourth reflector, the fifth reflector, the sixth reflector, the seventh reflector and the eighth reflector may be made of silicon carbide; the first deflecting mirror, the second deflecting mirror, the third deflecting mirror and the fourth deflecting mirror may be made of quartz.

[0077] In an exemplary embodiment, the primary mirror is an eighth-order even-order aspherical reflector;

[0078] The secondary mirror, the fourth reflecting mirror and the seventh reflecting mirror are second-order aspherical reflecting mirrors.

[0079] An even-order aspheric surface is an aspheric surface that uses an even-order power series polynomial as an additional polynomial. Its expression usually includes a reference quadratic surface and an additional polynomial, which is used to characterize the deviation between the aspheric surface and its reference quadratic surface.

[0080] The second-order aspheric surface is a subclass of the aspheric surface. It is the most widely used in optical systems and has a special position. The secondary aspheric surface can be divided into an aspheric surface with a pair of aberration-free points and an aspheric surface without aberration-free points.

[0081] In this embodiment, precise control of the incident spectrum is achieved through the cooperation of the even-order aspheric surface and the second-order aspheric surface.

[0082] In an exemplary embodiment, the first deflecting mirror and the second deflecting mirror are plane mirrors, and the third deflecting mirror and the fourth deflecting mirror are plane mirrors.

[0083] In an exemplary embodiment, the aspherical surface shape of the primary mirror conforms to the following formula:

[0084]

[0085] Where Z is the vector height, c is the curvature, r is the radial distance from a point on the reflector to the optical axis, k is the cone coefficient, and a4, a5 and a8 are all aspherical coefficients.

[0086] In an exemplary embodiment, the primary mirror satisfies:

[0087] a4=-1.98E -13 , a6=1.40E -21 , a8=-1.98E -28 , k=-1.28.

[0088] In an exemplary embodiment, the distance h1 from the primary mirror to the secondary mirror satisfies: ;

[0089] In the visible short-wave optical path system:

[0090] The distance h2 from the secondary mirror to the first deflection mirror satisfies: , preferably 3551.39mm;

[0091] The distance h3 from the first deflecting mirror to the second deflecting mirror satisfies: , preferably 700.25mm;

[0092] The distance h4 from the second deflecting mirror to the third reflecting mirror satisfies: , preferably 703.75mm;

[0093] The distance h5 from the third reflector to the fourth reflector satisfies: , preferably 773.54 mm;

[0094] The distance h6 from the fourth reflector to the fifth reflector satisfies: , preferably 411.42 mm;

[0095] In the medium and long wave optical path system:

[0096] The distance h7 from the secondary mirror to the third deflection mirror satisfies: , preferably 3573.74mm;

[0097] The distance h8 from the third deflecting mirror to the fourth deflecting mirror satisfies: , preferably 722.13 mm;

[0098] The distance h9 from the fourth deflecting mirror to the sixth reflecting mirror satisfies: , preferably 472.14 mm;

[0099] The distance h10 from the sixth reflector to the seventh reflector satisfies: , preferably 628.21 mm;

[0100] The distance h11 from the seventh reflector to the eighth reflector satisfies: , preferably 343.76mm.

[0101] As shown in Table 1 below, the parameters of the surface shape and curvature radius of each reflector in this application are illustrated.

[0102] Table 1

[0103]

[0104] In an exemplary embodiment, the third reflector, the fifth reflector, the sixth reflector and the eighth reflector are free-form surface reflectors;

[0105] The third reflector, the fifth reflector, the sixth reflector and the eighth reflector meet the following formula:

[0106] (1)

[0107] (2)

[0108] Where z is the sag, c is the curvature, r is the radial distance from a point on the reflector to the optical axis, k is the cone coefficient, N is the total number of polynomial coefficients in the series, and A i is the coefficient of the i-th expanded polynomial, Represents the power series in the x and y directions, where M is the size of the highest power.

[0109] In an exemplary embodiment, the third reflector satisfies: k=-0.52.

[0110] In an exemplary embodiment, the fifth reflector satisfies: k=-0.16.

[0111] In an exemplary embodiment, the sixth reflector satisfies: k=-0.52.

[0112] In an exemplary embodiment, the eighth reflector satisfies: k=0.16.

[0113] In practical applications, the third reflector also satisfies:

[0114] X 2 Y 0 =1.27E -4 ;X 0 Y 2 =-9.58E -5 ;X 4 Y 0 =1.88E -12 ;

[0115] X 2 Y 2 =2.35E -12 ;X 0 Y 4 =1.28E -11 ;X 6 Y 0 =-4.78E -18 ;

[0116] X 4 Y 2 =2.08E -18;X 2 Y 4 =4.97E -17 ;X 0 Y 6 =-8.48E -17 ;

[0117] X 8 Y 0 =-2.51E -24 ;X 6 Y 2 =-1.14E -22 ;X 4 Y 4 =3.18E -23 ;

[0118] X 2 Y 6 =7.58E -22 ;X 0 Y 8 =-8.21E -23 ;X 8 Y 2 =-1.21E -29 ;

[0119] X 6 Y 4 =-2.39E -28 ;X 4 Y 6 =2.25E -28 ;X 2 Y 8 =5.44E -28 .

[0120] The fifth reflector also satisfies:

[0121] X 2 Y 0 =5.22E -5 ;X 0 Y 2 =5.13E -5 ;X 4 Y 0 =-4.98E -11 ;

[0122] X 2 Y 2 =-7.7E -11 ;X 0 Y 4 =2.00E -10 ;X 6 Y 0 =-2.80E -16 ;

[0123] X 4 Y 2 =7.91E -16 ;X 2 Y 4 =3.41E -16 ;X 0 Y 6 =1.69E -15 ;

[0124] X 8 Y 0 =-8.57E -22 ;X 6 Y 2 =-8.22E -21 ;X 4 Y 4 =1.04E -19 ;

[0125] X 2 Y 6 =-2.48E -19 ;X 0 Y 8 =2.38E -20 ;X 8 Y 2 =-4.17E -26 ;

[0126] X 6 Y 4 =-1.79E -25 ;X 4 Y 6 =4.28E -25 ;X 2 Y 8 =4.28E -25 .

[0127] The sixth reflector also satisfies:

[0128] X 2 Y 0 =1.27E -4 ;X 0 Y 2 =-9.58E -5 ;X 4 Y 0 =1.88E -11 ;

[0129] X 2 Y 2 =4.66E -10 ;X 0 Y 4 =-1.11E -9;X 6 Y 0 =-6.27E -18 ;

[0130] X 4 Y 2 =-2.53E -17 ;X 2 Y 4 =-1.71E -15 ;X 0 Y 6 =2.27E -15 ;

[0131] X 8 Y 0 =-1.48E -23 ;X 6 Y 2 =-3.86E -22 ;X 4 Y 4 =8.41E -22 ;

[0132] X 2 Y 6 =5.79E -21 ;X 0 Y 8 =-8.27E -21 ;X 8 Y 2 =-5.33E -28 ;

[0133] X 6 Y 4 =-2.75E -27 ;X 4 Y 6 =5.58E -27 ;X 2 Y 8 =6.34E -26 .

[0134] The eighth reflector also satisfies:

[0135] X 2 Y 0 =1.23E -5 ;X 0 Y 2 =1.32E -5 ;X 4 Y 0 =7.31E -11 ;

[0136] X 2 Y 2=-6.49E -11 ;X 0 Y 4 =-8.46E -10 ;X 6 Y 0 =-1.12E -15 ;

[0137] X 4 Y 2 =3.01E -14 ;X 2 Y 4 =1.13E -13 ;X 0 Y 6 =1.37E -14 ;

[0138] X 8 Y 0 =7.33E -21 ;X 6 Y 2 =-2.62E -19 ;X 4 Y 4 =3.76E -18 ;

[0139] X 2 Y 6 =9.06E -18 ;X 0 Y 8 =1.85E -19 ;X 8 Y 2 =7.16E -25 ;

[0140] X 6 Y 4 =-4.07E -24 ;X 4 Y 6 =2.91E -23 ;X 2 Y 8 =2.69E -23 .

[0141] Figure 4 It is a diagram of the optical transfer function of the visible shortwave channel of the full-spectrum imaging detection system provided by an embodiment of the present invention.

[0142] Figure 5 It is an optical transfer function diagram of the medium and long wave channels of the full spectrum imaging detection system provided by an embodiment of the present invention.

[0143] Figure 6It is a point arrangement diagram of the visible shortwave channel of the full-spectrum imaging detection system provided by an embodiment of the present invention.

[0144] Figure 7 It is an optical transfer function diagram of the full-spectrum imaging detection system provided by an embodiment of the present invention.

[0145] in Figure 4 is the optical transfer function diagram of the visible light path of the visible short-wave channel, Figure 5 It is the optical transmission function diagram of the short-wave optical path of the visible short-wave channel. Figure 6 is the optical transmission function diagram of the medium-wave optical path in the medium- and long-wave channels, Figure 7 This is the optical transmission function diagram of the long-wave optical path of the medium- and long-wave channels.

[0146] like Figure 4-Figure 7 As shown, the visible shortwave of the full spectrum imaging detection system disclosed in the present application can be used with a 1024×256 detector, that is, the visible shortwave channel can use a 1024×256 detector, the pixel size is 15μm×15μm, and the corresponding Nyquist frequency is 33lp / mm. After the optical software optimization design, the image quality is excellent, the full field MTF of the visible channel is greater than 0.75@0.8μm, and the full field MTF of the shortwave channel is greater than 0.55@2.5μm.

[0147] The medium-wave optical path of the medium-wave channel can use a 1024×256 detector with a pixel size of 15μm×15μm, and the corresponding Nyquist frequency is 33lp / mm. The long-wave optical path of the medium-wave channel can use a 640×512 detector with a pixel size of 30μm×30μm, and the corresponding Nyquist frequency is 16.7lp / mm. After the optical software optimization design, the image quality is excellent, the full-field MTF of the medium-wave channel is greater than 0.35@5μm, and the full-field MTF of the long-wave channel is greater than 0.25@12.5μm.

[0148] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, i.e., they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Those of ordinary skill in the art may understand and implement it without creative effort.

[0149] Through the description of the above implementation modes, those skilled in the art can clearly understand that each implementation mode can be implemented by means of software plus a necessary general hardware platform, or of course by hardware. Based on such an understanding, the above technical solution can essentially or in other words be embodied in the form of a software product that contributes to the prior art. The computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods of each embodiment or some parts of the embodiment.

[0150] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. Full spectrum imaging detection system, characterized in that: include: Primary mirror, secondary mirror, field separator, visible short-wave rear optical path system, medium- and long-wave rear optical path system; The incident light is reflected by the primary mirror to the secondary mirror. After being reflected by the secondary mirror, the light is separated into a visible short-wave channel and a medium- and long-wave channel by the field of view separator. The light of the visible short-wave channel is imaged by the visible short-wave rear optical path system, and the light of the medium- and long-wave channel is imaged by the medium- and long-wave rear optical path system. The visible short-wave rear optical path system comprises a first deflecting mirror, a second deflecting mirror, a third reflecting mirror, a fourth reflecting mirror and a fifth reflecting mirror; The first deflection mirror and the second deflection mirror form an angle of 45° with the incident light, and are used to reflect the light of the visible short-wave channel to the third reflector, and the light of the visible short-wave channel is imaged after passing through the third reflector, the fourth reflector and the fifth reflector in sequence; The curvature radius R3 of the third reflector satisfies: -1250 mm ≤ R3 ≤ -1200 mm; The curvature radius R4 of the fourth reflector satisfies: -620 mm ≤ R4 ≤ -610 mm; The curvature radius R5 of the fifth reflector satisfies: -650 mm ≤ R5 ≤ -600 mm; The medium and long wave rear optical path system comprises a third deflecting mirror, a fourth deflecting mirror, a sixth reflecting mirror, a seventh reflecting mirror and an eighth reflecting mirror; The third deflection mirror and the fourth deflection mirror form an angle of 45° with the incident light, and are used to reflect the light of the medium and long wave channel to the sixth reflector, and the light of the medium and long wave channel is imaged after passing through the sixth reflector, the seventh reflector and the eighth reflector in sequence; The curvature radius R6 of the sixth reflector satisfies: -250 mm ≤ R6 ≤ -200 mm; The curvature radius R7 of the seventh reflector satisfies: -100 mm ≤ R7 ≤ -90 mm; The curvature radius R8 of the eighth reflector satisfies: -120 mm ≤ R8 ≤ -110 mm.

2. The full spectrum imaging detection system according to claim 1, characterized in that: The primary mirror is an eighth-order even-order aspherical reflector; The secondary mirror, the fourth reflecting mirror and the seventh reflecting mirror are second-order aspherical reflecting mirrors.

3. The full spectrum imaging detection system according to claim 1, characterized in that: The first deflecting mirror and the second deflecting mirror are plane mirrors, and the third deflecting mirror and the fourth deflecting mirror are plane mirrors.

4. The full spectrum imaging detection system according to claim 2, characterized in that: The aspherical surface shape of the primary mirror conforms to the following formula: Where Z is the vector height, c is the curvature, r is the radial distance from a point on the reflector to the optical axis, k is the cone coefficient, and a4, a6 and a8 are all aspherical coefficients.

5. The full spectrum imaging detection system according to claim 4, characterized in that: The primary mirror satisfies: a4=-1.98E -13 ,a6=1.40E -21 ,a8=-1.98E -28 ,k=-1.

28.

6. The full spectrum imaging detection system according to claim 1, characterized in that: The third reflector, the fifth reflector, the sixth reflector and the eighth reflector are free-form surface reflectors; The third reflector, the fifth reflector, the sixth reflector and the eighth reflector meet the following formula: Where z is the sag, c is the curvature, r is the radial distance from a point on the reflector to the optical axis, k is the cone coefficient, N is the total number of polynomial coefficients in the series, and A i is the coefficient of the i-th expanded polynomial, E i (x,y) represents the power series in the x and y directions, and M is the size of the highest power.

7. The full spectrum imaging detection system according to claim 6, characterized in that: The third reflector satisfies: k=-0.

52.

8. The full spectrum imaging detection system according to claim 6, characterized in that: The fifth reflecting mirror satisfies: k=-0.

16.

9. The full spectrum imaging detection system according to claim 6, characterized in that: The sixth reflecting mirror satisfies: k=-0.

52.

10. The full spectrum imaging detection system according to claim 6, characterized in that: The eighth reflecting mirror satisfies: k=0.16.

Images