CN113093457B - Multifunctional carbon fiber remote sensing camera supported by center - Google Patents

Abstract

The invention discloses a center-supported carbon fiber multifunctional remote sensing camera, which comprises: the system comprises a visible light camera, a carbon fiber force-bearing tower component and an infrared camera, wherein the visible light camera and the infrared camera are coaxially connected through the carbon fiber force-bearing tower component; wherein the visible light camera includes: the carbon fiber third reflector component, the carbon fiber fourth reflector component and the visible light focal plane component are arranged on the same plane; the infrared camera includes: the visible light camera and the infrared camera share a carbon fiber first reflecting mirror and a carbon fiber second reflecting mirror; one end of the carbon fiber bearing tower component and the visible light focal plane component are respectively connected with a carbon fiber first reflector, a carbon fiber second reflector and a lens component are respectively connected with the other end of the carbon fiber bearing tower component, and the lens component is simultaneously connected with the infrared focal plane component; the carbon fiber third reflector component is connected with the carbon fiber force-bearing tower component; the carbon fiber fourth reflector component is connected with the carbon fiber bearing tower component.

Description

A centrally supported carbon fiber multifunctional remote sensing camera

technical field

The invention relates to the technical field of space remote sensing, in particular to a centrally supported carbon fiber multifunctional remote sensing camera.

Background technique

The carbon fiber first reflector has high specific stiffness and excellent thermal and dynamic properties. Therefore, it can be made into a honeycomb-type hollow structure or a thin-walled structure, which can not only meet the ground requirements, but also meet the lightweight requirements of space optical remote sensing cameras. In recent years, carbon fiber first mirrors have been widely used in the field of optical remote sensing internationally.

In the prior art, most of the carbon fiber first reflectors are of thin-walled structure. In order to ensure the overall support rigidity and stability of the camera, the support method used between the primary mirror and the second mirror is mainly in the form of a triangular pyramid bracket. The top and bottom surfaces of the triangular pyramid bracket are respectively connected to the second reflector and the base plate of the camera. In order to ensure the support rigidity, the rods of the triangular pyramid bracket cannot be made very long, so the radial dimension of the base plate is large. This will undoubtedly increase the overall weight of the camera. Therefore, in order to achieve ultra-lightweight design, a new support method needs to be designed.

SUMMARY OF THE INVENTION

In view of this, the present invention provides a centrally supported carbon fiber multifunctional remote sensing camera, which can realize ultra-lightweight and multifunctional design of the remote sensing camera.

The technical scheme of the present invention is: a centrally supported carbon fiber multifunctional remote sensing camera, comprising: a visible light camera, a carbon fiber bearing tower assembly and an infrared camera, the visible light camera and the infrared camera are coaxially connected through the carbon fiber bearing tower assembly; The visible light camera includes: a carbon fiber third reflector assembly, a carbon fiber fourth reflector assembly, and a visible light focal plane assembly; the infrared camera includes: a lens assembly and an infrared focal plane assembly, and the visible light camera and the infrared camera share the carbon fiber first reflector and carbon fiber second mirror;

One end of the carbon fiber load-bearing tower assembly and the visible light focal plane assembly are respectively connected with the carbon fiber first reflector, the carbon fiber second reflector and the lens assembly are respectively connected with the other end of the carbon fiber load-bearing tower assembly, and the lens assembly is simultaneously connected with the infrared focus. The carbon fiber third reflector assembly is connected with the carbon fiber load-bearing tower assembly; the carbon fiber fourth reflector assembly is connected with the carbon fiber load-bearing tower assembly.

Preferably, the carbon fiber bearing tower assembly includes: a vertical support, an upper carbon fiber ring, a main bearing structure and a lower carbon fiber ring; the upper carbon fiber ring, the main bearing structure and the lower carbon fiber ring are in order from top to bottom Coaxial distribution; among them, the main load-bearing structure is used as the middle layer of the carbon fiber load-bearing tower assembly, which is a truncated cylindrical structure, and three vertical supports are evenly arranged in the circumferential direction, and each vertical support is a long strip structure. , and the length direction is parallel to the axial direction of the main bearing structure, the width direction is along the radial direction of the main bearing structure, and the thickness direction is along the circumferential direction of the main bearing structure. The ring is connected to the lower carbon fiber ring, the upper carbon fiber ring has a load-bearing tower two-mirror interface, the lower carbon fiber ring has a load-bearing tower substrate interface, and the small end of the main load-bearing structure has a load-bearing tower four-mirror interface ; wherein, the upper end of the vertical support is widened along the radial direction of the main load-bearing structure, and the lower end is thickened along the circumferential direction of the main load-bearing structure.

Preferably, the carbon fiber fourth reflector assembly includes: a carbon fiber fourth reflector and a flexible support for the fourth reflector; the carbon fiber fourth reflector is a disc-shaped structure with a light-passing hole in the center; the fourth reflector is flexible The support is installed on the axial end of the carbon fiber fourth reflector;

Wherein, the carbon fiber fourth reflector includes: a fourth reflector panel, a lightweight diagonal rib IV and a mandrel III; the fourth reflector panel is a circular panel, which is coaxially sleeved on the mandrel III, and the fourth reflector panel is Between the four-mirror panel and the mandrel III, more than three lightweight diagonal ribs IV are arranged along the circumferential direction of the mandrel III. The outer circumferential surface of III is connected, the long base is connected with the carbon fiber fourth reflector, and the opposite end of one end in the direction of the height is connected with the outer circumference III; a fourth reflector interface is left on the outer circumferential surface of the mandrel III;

The flexible support of the fourth reflector adopts a circular structure, and two rings of annular grooves or regular polygonal grooves are opened on the end face of the flexible support of the fourth reflector by wire cutting, and each ring of annular grooves is evenly divided into two rings along the circumferential direction. More than three arc grooves, each regular polygon groove is evenly divided into more than three strip grooves in the circumferential direction, and the two adjacent segments in the inner ring groove or regular polygon groove are connected by the rigid connecting rod II of the inner ring , the two adjacent segments in the annular groove or regular polygon groove of the outer ring are connected by the rigid connecting rod II of the outer ring, and the rigid connecting rod II of the inner and outer rings is dislocated, forming a ring groove or regular polygon groove between the inner and outer rings. Six-segment flexible connecting rod II; the inner wall of the ring supported by the fourth reflector is connected with the mandrel III of the carbon fiber fourth reflector, and there are more than one external interface II on the outer wall of the ring, and all external interfaces II It is connected with the four-mirror interface of the bearing tower; the inner circumferential surface of the flexible support of the fourth mirror is provided with a mirror interface II, the mirror interface II is connected with the fourth mirror interface of the carbon fiber fourth mirror, and the rigid connection of the inner ring is connected. The rod II and the rigid link II of the outer ring are connected by a flexible link II.

Preferably, the carbon fiber second reflector is a cylindrical structure, the end face where one end of the axial direction is located is the light incident surface, and the surface is coated with a semi-reflective and semi-transmissive film as a semi-reflective and semi-transparent surface, and the end face where the other end is located is a light incident surface. It is the transmission surface; wherein, the carbon fiber second reflector is fixed in the mirror base by the form of pressure ring or wrapping.

Preferably, the carbon fiber first reflector includes: a main reflector and a substrate; the main reflector is a ring structure, and a flange is coaxially provided between the outer circumference I and the inner circumference, and the main reflector and the substrate are integrated Coaxial design, the central axis of the two is the mandrel; between the flange and the outer circumference I, the lightweight oblique rib I is set, and the lightweight oblique rib I is rectangular, triangular or fan-shaped;

The base plate is a regular polygon or a circular frame structure, with a base plate lightweight groove in the circumferential direction, and a lightweight diagonal bar II is staggered between the base plate and the mandrel, and a carbon fiber bearing tower component is left at the intersection of the lightweight diagonal bar II. The interface and the interface of the visible light focal plane component; the substrate interface is designed on the side or lower end face of the substrate.

Preferably, the carbon fiber third reflector assembly includes: a carbon fiber third reflector, a flexible support for the third reflector, and a light-weight support for the third reflector; the carbon fiber third reflector is a disc-shaped structure, the center of which is provided with a pass through The light hole, the lightweight support of the third reflector adopts a cylindrical structure, and the carbon fiber third reflector is installed on the axial end of the lightweight support of the third reflector through the flexible support of the third reflector, and the lightweight support of the third reflector The other end of the axial direction is supported on the triangular base;

Wherein, the carbon fiber third reflector includes: a third reflector panel, a lightweight diagonal rib III and a mandrel II, the third reflector panel is a circular panel, which is coaxially sleeved on the mandrel II, and the third reflector panel is a circular panel. Between the three-mirror panel and the mandrel II, more than three lightweight diagonal ribs III are arranged along the circumference of the mandrel II. The outer circumferential surface of II is connected, the long bottom edge is connected with the third reflector panel, and the opposite end of one end in the direction of the height is connected with the outer circumference II; there is a third reflector interface on the outer circumferential surface of the mandrel II;

The flexible support of the third reflector adopts a circular structure, and two rings of annular grooves or regular polygonal grooves are opened on the end face of the flexible support of the third reflector by line cutting, and each ring of annular grooves is evenly divided into two rings along the circumferential direction. More than three arc-shaped grooves, each regular polygonal groove is evenly divided into three or more strip-shaped grooves along the circumferential direction, and two adjacent segments in the inner ring annular groove or regular polygonal groove are connected by the rigid connecting rod I of the inner ring , the two adjacent segments in the annular groove or regular polygon groove of the outer ring are connected by the rigid connecting rod I of the outer ring, and the rigid connecting rod I of the inner and outer rings is dislocated, forming a ring groove or regular polygon groove between the inner and outer rings. Six-segment flexible connecting rod I; the inner wall of the ring supported by the third reflector is connected to the mandrel II of the carbon fiber third reflector, and there are more than one external interface I on the outer wall of the ring, and all external interfaces I It is connected with the upper end interface I; the inner circumferential surface of the flexible support of the third reflector is provided with a reflector interface I, the reflector interface I is connected with the third reflector interface of the carbon fiber third reflector, and the rigid link I of the inner ring and the The rigid links I of the outer ring are connected by flexible links I;

The lightweight support of the third reflector is divided into three layers: upper, middle and lower, and the upper and lower ends are respectively an upper end interface I and a lower end interface I; the upper end interface I is connected to the flexible support of the third reflector, and the lower end interface I is arranged on the triangular base, It is the external interface; the middle layer is the load-bearing structure, which is composed of a middle thin-walled cylinder and three groups of supporting diagonal bars evenly arranged around the thin-walled cylinder in the circumferential direction; There are three groups of lightweight holes II on the circumferential surface of the thin-walled cylinder along the circumferential direction.

Preferably, the visible light focal plane assembly includes: a visible light focal plane barrel and a visible light focal plane electric box; the visible light focal plane barrel is a conical cylinder, and the visible light focal plane electric box is arranged at the small end of the visible light focal plane barrel; wherein, the The visible light focal plane barrel includes: a bearing barrel and an upper end interface II and a lower end interface II arranged at both ends of the bearing barrel in the axial direction; the visible light focal plane electric box includes: a visible light focal plane, an electric box shell I, a rear end of the electric box Cover and prism; the electric box shell I is a cuboid frame structure, and its opposite ends are respectively provided with a circular electric box interface and an electric box back cover, and the electric box interface is used to connect the electric box shell I with the visible light focal surface tube The small end connection of the electric box shell I is provided with a visible light focal plane, and the side of the electric box shell I is provided with a data interface and a prism.

Preferably, the lens assembly includes: a lens barrel, a lens seat and a lens; the lens barrel is a stepped shaft-shaped multi-segment cylinder, and the diameter gradually increases from one end to the other end, and a circular truncated cylinder passes between adjacent cylinders The bodies are coaxially connected, more than two mirror seats are arranged on the inner wall of the lens barrel along the axial direction, each mirror seat is provided with an annular groove along the circumferential direction of the lens barrel, and a lens is arranged in each mirror seat; The axial interval between them is adjustable, the big end of the lens barrel is connected to the carbon fiber bearing tower assembly through the circumferential flange interface of this end, and the small end is connected to the infrared focal plane assembly through the circumferential flange interface of this end; the mirror is adjusted through the gasket relative position between the barrel and the infrared focal plane assembly.

Preferably, the infrared focal plane assembly includes: an infrared focal plane, a circuit board II and an electrical box housing II; the infrared focal plane is given by an optical system, and the photosensitive plane and the infrared focal plane are guaranteed to be aligned when the detector is installed , the circuit board II and the power supply are arranged in sequence behind the detector; the installation interface of the reference prism and the infrared focal plane interface are left on the electric box shell II, and the infrared focal plane interface is used to connect the infrared focal plane assembly and the lens assembly.

Beneficial effects:

1. The carbon fiber multifunctional remote sensing camera supported by the center of the present invention adopts an integrated design in which the visible light camera and the infrared camera are coaxially connected by the carbon fiber bearing tower assembly, which can realize the photographing function of the visible light and infrared spectrum at the same time, and reduces the whole machine. It realizes an ultra-light and lightweight design, and the supported carbon fiber mirror has low weight, good stability and high surface accuracy, and has a good application prospect in the field of space remote sensing technology.

2. The visible light camera and the infrared camera in the present invention share the carbon fiber first reflector and the carbon fiber second reflector, which can effectively connect the visible light camera and the infrared camera closely, and can effectively simplify the structure and reduce the weight of the whole machine.

3. The specific design of the carbon brazing bearing tower assembly in the present invention can reliably connect the visible light camera and the infrared camera, reduce the overall weight of the support frame, improve the dynamic performance of the system, and ensure the overall support of the visible light camera and the infrared camera. Rigidity and support surface shape; at the same time, the central support carbon fiber second mirror is adopted, which reduces the overall size of the support frame and the load-bearing substrate, saves space, and greatly reduces the weight of the whole machine.

Description of drawings

Fig. 1 is the structural representation of the remote sensing camera of the present invention;

Fig. 2 is a half-section schematic diagram of the visible light camera in Fig. 1;

Fig. 3 is a half-section schematic diagram of the infrared camera in Fig. 1;

Figure 4 is a schematic structural diagram of the carbon fiber bearing tower assembly in Figures 1, 2, and 3;

Fig. 5 is the structural representation of the second reflector in Figs. 2 and 3;

Fig. 6 is the structural representation of the carbon fiber first reflector in Figs. 2 and 3;

Fig. 7 is the structural representation of the carbon fiber third reflector assembly in Fig. 2;

Fig. 8 is the structural representation of the carbon fiber third reflector in Fig. 7;

Fig. 9 is the structural schematic diagram of the flexible support of the third reflector in Fig. 7;

FIG. 10 is a schematic structural diagram of the lightweight support of the third reflector in FIG. 7;

FIG. 11 is a schematic structural diagram of the carbon fiber fourth mirror assembly in FIG. 2;

Figure 12 is a schematic structural diagram of the carbon fiber fourth reflector in Figure 11;

FIG. 13 is a schematic structural diagram of the flexible support of the fourth mirror in FIG. 11;

14 is a schematic structural diagram of a visible light camera focal plane assembly in FIG. 2;

Fig. 15 is the structural schematic diagram of the focal plane barrel of the visible light camera in Fig. 14;

16 is a schematic structural diagram of the visible light camera focal plane assembly in FIG. 14;

17 is a schematic structural diagram of the infrared camera lens assembly in FIG. 3;

FIG. 18 is a schematic structural diagram of the focal plane assembly of the infrared camera in FIG. 3 .

Among them, 1. Visible light camera, 2. Infrared camera;

1-1. Carbon fiber bearing tower assembly, 1-2, Carbon fiber second reflector, 1-3, Carbon fiber first reflector, 1-4, Carbon fiber third reflector assembly, 1-5, Carbon fiber fourth reflector Components, 1-6, visible light focal plane components;

2-1, lens assembly, 2-2, infrared focal plane assembly;

1-1-1, vertical bracket, 1-1-2, bearing tower two-mirror interface, 1-1-3, bearing tower four-mirror interface, 1-1-4, bearing tower base plate interface;

1-2-1, transflective surface, 1-2-2, transmission surface;

1-3-1, Main reflector panel, 1-3-2, Lightweight diagonal ribs I, 1-3-3, Outer circumference I, 1-3-4, Lightweight hole I, 1-3-5, Flanging, 1-3-6, base plate interface, 1-3-7, mandrel, 1-3-8, base plate lightweight groove, 1-3-9, lightweight diagonal ribs II, 1-3-10, Main reflector, 1-3-11, substrate;

1-4-1, carbon fiber third reflector, 1-4-2, flexible support for the third reflector, 1-4-3, lightweight support for the third reflector;

1-4-1-1, The third mirror panel, 1-4-1-2, Lightweight diagonal ribs III, 1-4-1-3, Outer circumference II, 1-4-1-4, The third Mirror interface, 1-4-1-5, mandrel II;

1-4-2-1, mirror interface I, 1-4-2-2, flexible link I, 1-4-2-3, rigid link I, 1-4-2-4, external interface I , 1-4-2-5, wire cutting hole I;

1-4-3-1, upper end interface I, 1-4-3-2, lower end interface I, 1-4-3-3, lightweight hole II, 1-4-3-4, supporting diagonal ribs;

1-5-1, carbon fiber fourth mirror, 1-5-2, flexible support of the fourth mirror;

1-5-1-1, Fourth mirror panel, 1-5-1-2, Lightweight diagonal ribs IV, 1-5-1-3, Outer circumference III, 1-5-1-4, Fourth Mirror interface, 1-5-1-5, mandrel III;

1-5-2-1, mirror interface II, 1-5-2-2, flexible link II, 1-5-2-3, rigid link II, 1-5-2-4, external interface II , 1-5-2-5, wire cutting hole II;

1-6-1. Visible light focal plane cylinder, 1-6-2, Visible light focal plane electric box;

1-6-1-1, upper port II, 1-6-1-2, bearing cylinder, 1-6-1-3, lower port II;

1-6-2-1, Visible light focal plane, 1-6-2-2, Electric box interface, 1-6-2-3, Electric box shell I, 1-6-2-4, Data interface, 1 -6-2-5, back cover of electric box, 1-6-2-6, prism;

2-1-1, lens barrel, 2-1-2, lens holder, 2-1-3, pressure ring, 2-1-4, lens;

2-2-1, infrared focal plane, 2-2-2, infrared focal plane interface, 2-2-3, circuit board II, 2-2-4, electric box shell II, 2-2-5, data transport interface.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

This embodiment provides a centrally supported carbon fiber multifunctional remote sensing camera, which can realize ultra-lightweight and multifunctional design of the remote sensing camera.

As shown in Figure 1, the remote sensing camera includes: a visible light camera 1, a carbon fiber bearing tower assembly 1-1, and an infrared camera 2. The visible light camera 1 and the infrared camera 2 are coaxially supported by the carbon fiber bearing tower assembly 1-1. The force tower assembly 1-1 acts as a central support, and the remote sensing camera formed by this has two functions of visible light detection and infrared imaging at the same time.

As shown in FIG. 2 , the visible light camera 1 includes: a carbon fiber first reflector 1-3, a carbon fiber second reflector 1-2, a carbon fiber third reflector assembly 1-4, a carbon fiber fourth reflector assembly 1-5 and visible light The focal plane assembly 1-6; as shown in FIG. 3, the infrared camera 2 includes: a carbon fiber first reflecting mirror 1-3, a carbon fiber second reflecting mirror 1-2, a lens assembly 2-1 and an infrared focal plane assembly 2-2; Wherein, the carbon fiber first reflecting mirror 1-3 and the carbon fiber second reflecting mirror 1-2 are shared by the visible light camera 1 and the infrared camera 2;

The load-bearing tower substrate interface 1-1-4 and the visible light focal plane assembly 1-6 in the carbon fiber load-bearing tower assembly 1-1 respectively communicate with the carbon fiber first reflector 1-3 through the substrate interface 1-3-6 on the carbon fiber first reflector 1-3. A reflector 1-3 is connected to realize the connection between the carbon fiber first reflector 1-3 and one end of the carbon fiber bearing tower assembly 1-1 and the visible light focal plane assembly 1-6 and the carbon fiber first reflector 1-3 ; The carbon fiber second mirror 1-2 and the lens assembly 2-1 are connected to the other end of the carbon fiber load bearing tower assembly 1-1 through the second mirror interface 1-1-2 of the load bearing tower, and the lens assembly 2-1 passes through the infrared focal plane. The interface 2-2-2 is connected with the infrared focal plane component 2-2; the carbon fiber third reflector component 1-4 is connected to the bearing tower on the carbon fiber bearing tower component 1-1 through its lower end interface I1-4-3-2 The substrate interface 1-1-4 is connected; the carbon fiber fourth mirror assembly 1-5 is connected to the carbon fiber load-bearing tower assembly 1-1 through the four-mirror interface 1-1-3 of the load-bearing tower;

Among them, when the carbon fiber load-bearing tower assembly 1-1 is designed, the splicing scheme is adopted, which can significantly reduce the difficulty of the manufacturing process; as shown in Figure 4, the carbon fiber load-bearing tower assembly 1-1 includes: vertical support 1-1-1 , the upper carbon fiber ring, the main bearing structure and the lower carbon fiber ring; the upper carbon fiber ring, the main bearing structure and the lower carbon fiber ring are coaxially distributed from top to bottom; among them, the main bearing structure is used as the carbon fiber bearing tower The middle layer of the component 1-1 is a truncated cylindrical structure, and three vertical supports 1-1-1 are evenly arranged in the circumferential direction, and each vertical support 1-1-1 is a long strip structure, and The length direction is parallel to the axial direction of the main bearing structure, the width direction is along the radial direction of the main bearing structure, and the thickness direction is along the circumferential direction of the main bearing structure. The upper carbon fiber ring and the lower carbon fiber ring are connected, the upper carbon fiber ring has the bearing tower two mirror interface 1-1-2, and the lower carbon fiber ring has the bearing tower substrate interface 1-1-4, the main bearing The small end of the force structure is left with the four-mirror interface 1-1-3 of the bearing tower; in order to improve the transmission of the remote sensing camera, the design considers reducing the shading area of the carbon fiber bearing tower component 1-1, and the vertical support 1- The upper end of 1-1 is widened along the radial direction of the main load-bearing structure, and the lower end is thickened along the circumferential direction of the main load-bearing structure. This design scheme can improve the support stiffness of the carbon fiber load-bearing tower assembly 1-1, and can Ensure the surface accuracy of the optical components mounted on it;

When designing the carbon fiber second reflector 1-2, select infrared optical materials, such as germanium, etc. As shown in Figure 5, the carbon fiber second reflector 1-2 is a cylindrical structure, and the end face where the axial end is located is the light incident surface , the surface is coated with a semi-reflective and semi-transmissive film, as a semi-reflective and semi-transmissive surface 1-2-1, which has semi-reflection and semi-transmission capabilities, and the end face where the other end is located is a transmission surface 1-2-2; among them, carbon fiber The second reflector 1-2 is fixed in the mirror base by means of a pressure ring or wrapping;

As shown in FIG. 6, the carbon fiber first reflecting mirror 1-3 includes: a main reflecting mirror 1-3-10 and a substrate 1-3-11; the main reflecting mirror 1-3-10 is a ring structure, and its outer circumference I1- The flange 1-3-5 is coaxially arranged between 3-3 and the inner circumference. The main reflector 1-3-10 and the base plate 1-3-11 adopt an integrated coaxial design, and the central axis of the two is the mandrel. 1-3-7; When designing the carbon fiber first reflector 1-3, first of all, according to the parameters such as the diameter and clear aperture of the primary reflector 1-3-10 given by the optical system, and based on the design experience of the diameter-to-thickness ratio, Determine the size of the main mirror panel 1-3-1 of the main mirror 1-3-10; then, according to the diameter size of the main mirror 1-3-10, the diameter of the light hole, the actual optical processing capability and stiffness Surface shape requirements, etc., determine the density, distribution and thickness of the lightweight diagonal ribs I1-3-2 set between the flanges 1-3-5 and the outer circumference I1-3-3; the lightweight diagonal ribs I1-3 -2 can use conventional rectangular, triangular or fan-shaped layout, etc.; according to experience, when the diameter of the main reflector 1-3-10 is larger, the lightweight diagonal bars I1-3-2 usually adopt a triangular layout, and the diameter size is relatively large. Hourly, the light-weight diagonal bars I1-3-2 can be arranged in a fan shape;

The base plate 1-3-11 is a regular polygon or a circular frame structure, and a base plate lightweight groove 1-3-8 is opened in the circumferential direction. Ribs II 1-3-9, and at the intersection of the lightweight diagonal ribs II 1-3-9, the interface of the carbon fiber bearing tower assembly 1-1 and the interface of the visible light focal plane assembly 1-6 are left; on the base plate 1-3- Design the substrate interface 1-3-6 on the side or lower end face of 11; when the main body dimensions of the main reflector 1-3-10 and the substrate 1-3-11 are all determined, a preliminary finite element simulation analysis is performed on them, according to the natural frequency , stress distribution, surface shape and other important indicators, optimize the design of the main mirror 1-3-10, and make the main mirror 1-3-10 meet the set design requirements through iteration;

As shown in FIG. 7 , the carbon fiber third reflector assembly 1-4 includes: a carbon fiber third reflector 1-4-1, a third reflector flexible support 1-4-2, and a third reflector lightweight support 1-4 -3; The carbon fiber third reflector 1-4-1 is a disc-shaped structure with a light-passing hole in the center, the third reflector lightweight support 1-4-3 adopts a cylindrical structure, and the carbon fiber third reflector The mirror 1-4-1 is installed on the axial end of the third reflector lightweight support 1-4-3 through the third reflector flexible support 1-4-2, and the third reflector lightweight support 1-4-3 The other end of the axial direction is supported on a triangular base; wherein, as shown in Figure 8, the carbon fiber third reflector 1-4-1 includes: a third reflector panel 1-4-1-1, a lightweight diagonal rib III 1-4 -1-2 and the mandrel II 1-4-1-5, the third mirror panel 1-4-1-1 is a circular panel, which is coaxially sleeved on the mandrel II 1-4-1-5, and Between the third mirror panel 1-4-1-1 and the mandrel II1-4-1-5 along the circumferential direction of the mandrel II1-4-1-5, three or more lightweight diagonal ribs III1-4-1 are arranged -2, each light-weight oblique rib III1-4-1-2 is a right-angled trapezoidal sheet-like structure, one end in the direction of its height is connected to the outer circumferential surface of the mandrel II1-4-1-5, and the long bottom side is connected to the first The three-mirror panels 1-4-1-1 are connected, and the opposite end of one end in the direction of the height is connected with the outer circumference II1-4-1-3; Three-mirror interface 1-4-1-4;

When designing the carbon fiber third reflector assembly 1-4, first determine the topological form and size structure of the carbon fiber third reflector 1-4-1, and then according to the diameter of the carbon fiber third reflector 1-4-1 given by the optical system and its central aperture and other parameters, according to the design experience of the diameter-to-thickness ratio, determine the size of the third mirror panel 1-4-1-1 of the carbon fiber third reflector 1-4-1; then, according to the carbon fiber The diameter of the third reflector 1-4-1, the aperture of the central light hole, the actual optical processing capability and the rigidity surface shape requirements, etc., determine the density, distribution and shape of the lightweight diagonal ribs III1-4-1-2. thickness dimension;

As shown in FIG. 9 , the third reflector flexible support 1-4-2 adopts a circular structure and is made of invar, and is cut on the end face of the third reflector flexible support 1-4-2 by wire cutting. Two rings of annular grooves or regular polygonal grooves, each ring of annular grooves is evenly divided into more than three segments of arc-shaped grooves along the circumferential direction, each ring of regular polygonal grooves is evenly divided into more than three segments of strip-shaped grooves along the circumferential direction, and the inner ring of annular grooves or regular polygonal grooves. The two adjacent segments in the polygonal groove are connected by the rigid connecting rod I1-4-2-3 of the inner ring, and the two adjacent segments in the annular groove or regular polygonal groove of the outer ring are connected by the rigid connecting rod I1 of the outer ring. -4-2-3 connection, and the rigid connecting rods I1-4-2-3 of the inner and outer rings are dislocated, and six-segment flexible connecting rods I1-4-2-2 are formed between the inner and outer ring grooves or regular polygon grooves; The inner wall surface of the ring of the third reflector flexible support 1-4-2 is connected to the mandrel II 1-4-1-5 of the carbon fiber third reflector 1-4-1, and there is a The above external interface I1-4-2-4, all external interfaces I1-4-2-4 are connected with the upper end interface I1-4-3-1; There are mirror interface I1-4-2-1, mirror interface I1-4-2-1 and the third mirror interface 1-4-1-4 of the carbon fiber third mirror 1-4-1 are connected, the inner ring The rigid connecting rod I1-4-2-3 of the outer ring is connected with the rigid connecting rod I1-4-2-3 of the outer ring through the flexible connecting rod I1-4-2-2; The two ends of the groove are wire cutting holes I1-4-2-5, which are used for wire cutting to form corresponding arc-shaped grooves or strip-shaped grooves, so as to obtain the flexible support of the third mirror with alternating rigid and flexible structures 1-4 -2, the purpose is to ensure that the third mirror is not deformed;

As shown in Figure 10, the lightweight support 1-4-3 of the third mirror is divided into three layers: upper, middle and lower. The upper and lower ends are respectively the upper interface I1-4-3-1 and the lower interface I1-4-3-2 ;The upper end interface I1-4-3-1 is connected to the third mirror flexible support 1-4-2, and the lower end interface I1-4-3-2 is set on the triangular base, which is the external interface; the middle layer is the load-bearing structure, It consists of a middle thin-walled cylinder and three groups of supporting diagonal ribs 1-4-3-4 evenly arranged around the thin-walled cylinder in the circumferential direction; There are "m"-shaped lightweight holes II 1-4-3-3, and three groups of lightweight holes II 1-4-3-3 are opened on the circumferential surface of the thin-walled cylinder along the circumferential direction;

As shown in FIG. 11 , the carbon fiber fourth reflector assembly 1-5 includes: a carbon fiber fourth reflector 1-5-1 and a fourth reflector flexible support 1-5-2; a carbon fiber fourth reflector 1-5-1 It is a disc-shaped structure with a light-passing hole in its center; the fourth reflecting mirror flexible support 1-5-2 is installed on the axial end of the carbon fiber fourth reflecting mirror 1-5-1; wherein, the carbon fiber fourth reflecting mirror 1 -5-1 is similar to carbon fiber third reflector 1-4-1, as shown in Figure 12, carbon fiber fourth reflector 1-5-1 includes: fourth reflector panel 1-5-1-1, lightweight The diagonal ribs IV1-5-1-2 and the mandrel III1-5-1-5; the fourth reflector panel 1-5-1-1 is a circular panel, which is coaxially sleeved on the mandrel III1-5-1 -5, and between the fourth mirror panel 1-5-1-1 and the mandrel III1-5-1-5 along the circumferential direction of the mandrel III1-5-1-5, three or more lightweight diagonal ribs are arranged Ⅳ1-5-1-2, each light-weight diagonal rib Ⅳ1-5-1-2 is a right-angled trapezoid sheet-like structure, and one end in the direction of its height is connected to the outer circumferential surface of the mandrel Ⅲ1-5-1-5, The long base is connected to the carbon fiber fourth reflector 1-5-1, and the opposite end of one end in the direction of the height is connected to the outer circumference III1-5-1-3; on the outer circumference of the mandrel III1-5-1-5 Leave the fourth mirror interface 1-5-1-4;

When designing the carbon fiber fourth reflector assembly 1-5, first determine the topological form and size structure of the carbon fiber fourth reflector 1-5-1, and then according to the diameter of the carbon fiber fourth reflector 1-5-1 given by the optical system , clear aperture and other parameters, according to the design experience of the diameter-thickness ratio, determine the size of the fourth reflector panel 1-5-1-1 in the carbon fiber fourth reflector 1-5-1; then, according to the carbon fiber fourth reflector 1-5-1 -5-1 diameter, the diameter of the middle light hole, the actual optical processing ability and rigidity surface shape requirements, etc., determine the density, distribution and thickness of the lightweight diagonal ribs IV1-5-1-2;

As shown in FIG. 13 , the flexible support 1-5-2 of the fourth reflector adopts a circular structure, and the material is invar. The end face of the flexible support 1-5-2 of the fourth reflector is cut by wire Two rings of annular grooves or regular polygonal grooves, each ring of annular grooves is evenly divided into more than three segments of arc-shaped grooves along the circumferential direction, each ring of regular polygonal grooves is evenly divided into more than three segments of strip-shaped grooves along the circumferential direction, and the inner ring of annular grooves or regular polygonal grooves. The two adjacent segments in the polygonal groove are connected by the rigid connecting rod II1-5-2-3 of the inner ring, and the two adjacent segments in the annular groove or regular polygonal groove of the outer ring are connected by the rigid connecting rod II1 of the outer ring. -5-2-3 connection, and the rigid connecting rod II 1-5-2-3 of the inner and outer rings are dislocated, and a six-segment flexible connecting rod II 1-5-2-2 is formed between the inner and outer ring grooves or regular polygon grooves; The inner wall of the ring of the flexible support 1-5-2 of the fourth reflector is connected with the mandrel III 1-5-1-5 of the carbon fiber fourth reflector 1-5-1, and there is a The above external interfaces II 1-5-2-4, all external interfaces II 1-5-2-4 are connected to the four-mirror interface 1-1-3 of the bearing tower; the inner circumferential surface of the fourth mirror flexibly supports 1-5-2 There is a mirror interface II 1-5-2-1 on it, the mirror interface II 1-5-2-1 is connected with the fourth mirror interface 1-5-1-4 of the carbon fiber fourth mirror 1-5-1, The rigid link II1-5-2-3 of the inner ring and the rigid link II1-5-2-3 of the outer ring are connected by the flexible link II1-5-2-2; The two ends of the bar-shaped groove are respectively wire-cut threading holes II 1-5-2-5, which are used for wire-cutting to form corresponding arc-shaped grooves or bar-shaped grooves, so as to obtain the flexible support 1 of the fourth mirror with alternating rigid and flexible structures. -5-2, the purpose is to ensure that the fourth mirror is not deformed;

As shown in FIG. 14 , the visible light focal plane assembly 1-6 includes: a visible light focal plane barrel 1-6-1 and a visible light focal plane electric box 1-6-2; the visible light focal plane barrel 1-6-1 is a conical barrel , the visible light focal plane electric box 1-6-2 is arranged at the small end of the visible light focal plane barrel 1-6-1; wherein, as shown in Figure 15, the visible light focal plane barrel 1-6-1 includes: a bearing barrel 1- 6-1-2 and the upper end interface II1-6-1-1 and the lower end interface II1-6-1-3 arranged at the axial ends of the bearing cylinder 1-6-1-2; as shown in Figure 16, the visible light focus Surface electric box 1-6-2 includes: visible light focal plane 1-6-2-1, electric box shell I1-6-2-3, electric box back cover 1-6-2-5 and prism 1-6- 2-6; Electric box shell I1-6-2-3 is a cuboid frame structure, and its opposite ends are respectively provided with circular electric box interface 1-6-2-2 and electric box back cover 1-6- 2-5, the electrical box interface 1-6-2-2 is used to connect the electrical box shell I1-6-2-3 with the small end of the visible light focal surface cylinder 1-6-1; the electrical box shell I1-6 -2-3 is provided with visible light focal plane 1-6-2-1 inside, and the side of electric box shell I1-6-2-3 is provided with data interface 1-6-2-4 and prism 1-6-2- 6;

When designing the visible light focal plane assembly 1-6, the axial height of the visible light focal plane cylinder 1-6-1 is determined by the focal length of the optical system; The distribution position determines the upper end interface II1-6-1-1 of the visible light focal plane cylinder 1-6-1; determines the lower end interface of the visible light focal plane cylinder 1-6-1 according to the position and size of the visible light focal plane 1-6-2-1 Ⅱ1-6-1-3; When installing the detector, ensure that its photosensitive surface and visible light focal surface 1-6-2-1 are aligned. Specifically, you can adjust the visible light focal surface cylinder 1-6-1 and the visible light focal surface electric box 1. -6-2 between the gaskets; determine the size, type and quantity of the circuit boards in the electric box shell I1-6-2-3 according to the functional requirements of the imaging electronics, and then determine the electric box shell I1-6 - the size of 2-3 and the number and location distribution of the data interfaces 1-6-2-4 on it;

As shown in FIG. 17 , the lens assembly 2-1 includes: a lens barrel 2-1-1, a lens base 2-1-2 and a lens 2-1-4; when the lens assembly 2-1 is designed, the lens barrel 2-1- 1 is a stepped shaft-shaped multi-segment cylinder, and the diameter gradually increases from one end to the other end. The adjacent cylinders are connected coaxially by a truncated cylinder. There are more than one lens holder 2-1-2, each lens holder 2-1-2 is provided with an annular groove along the circumferential direction of the lens barrel 2-1-1, and each lens holder 2-1-2 is provided with a lens 2-1-4; Adjust the axial spacing in the lens barrel 2-1-1 between the adjacent mirror bases 2-1-2 by trimming the end faces or trimming washers, and the lens bases 2-1-2 After finishing the outer circumference, install the lens barrel 2-1-1; the large end of the lens barrel 2-1-1 is connected to the carbon fiber bearing tower assembly 1-1 through the circumferential flange interface of this end, and the small end is connected by the circumferential method of this end. The blue interface is connected with the infrared focal plane assembly 2-2; the relative position between the lens barrel 2-1-1 and the infrared focal plane assembly 2-2 is adjusted by the gasket to ensure the accurate alignment of the photosensitive surface of the detector;

As shown in Figure 18, the infrared focal plane assembly 2-2 includes: the infrared focal plane 2-2-1, the circuit board II 2-2-3 and the electric box housing II 2-2-4; the infrared focal plane assembly 2-2 is designed When the detector is installed, the infrared focal plane 2-2-1 is given by the optical system. When installing the detector, ensure that the photosensitive plane and the infrared focal plane 2-2-1 are aligned, which can be corrected by adjusting the washer; Imaging electronics components such as board II2-2-3 and power supply; determine the size, model and quantity of circuit board II2-2-3 according to the functional requirements of imaging electronics, and then determine the electrical box that wraps circuit board II2-2-3 The size of the housing II2-2-4 and the number and location distribution of the data transmission interfaces 2-2-5 set on the electrical box housing II2-2-4; there is a reference on the electrical box housing II2-2-4 The installation interface of the prism and the infrared focal plane interface 2-2-2, the infrared focal plane interface 2-2-2 is used to connect the infrared focal plane component 2-2 and the lens component 2-1.

So far, the preliminary design of the structure of the carbon fiber multi-function remote sensing camera supported by the center has been completed. According to the design indicators, the overall structure of the camera is subjected to finite element simulation analysis to optimize the structure size of the camera, improve the natural frequency and dynamic response of the camera, and improve the optics. The quality of the supporting surface of the component; finally, the optimized multi-function remote sensing camera model is obtained; after measurement, the camera has a total length of 710mm, a maximum diameter of 420mm, and a weight of less than 10kg, and the simulation results of one, two, three, and four mirrors are all excellent. At 10nm, the first-stage natural frequency of the whole camera is higher than 120Hz, which meets the design requirements of ultra-light carbon fiber multi-function remote sensing cameras.

To sum up, the above are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (9)

1. The utility model provides a multi-functional remote sensing camera of carbon fiber of center support which characterized in that includes: the device comprises a visible light camera (1), a carbon fiber force-bearing tower component (1-1) and an infrared camera (2), wherein the visible light camera (1) and the infrared camera (2) are coaxially connected through the carbon fiber force-bearing tower component (1-1); wherein the visible light camera (1) comprises: a carbon fiber third reflector component (1-4), a carbon fiber fourth reflector component (1-5) and a visible light focal plane component (1-6); the infrared camera (2) comprises: the visible light camera (1) and the infrared camera (2) share a carbon fiber first reflector (1-3) and a carbon fiber second reflector (1-2);

one end of the carbon fiber bearing tower component (1-1) and the visible light focal plane component (1-6) are respectively connected with a carbon fiber first reflector (1-3), a carbon fiber second reflector (1-2) and the lens component (2-1) are respectively connected with the other end of the carbon fiber bearing tower component (1-1), and the lens component (2-1) is simultaneously connected with the infrared focal plane component (2-2); the carbon fiber fourth reflector component (1-5) is connected with the carbon fiber bearing tower component (1-1) and is coaxially positioned in the middle of the bearing tower component (1-1); the carbon fiber third reflector component (1-4) is connected with the carbon fiber force bearing tower component (1-1), and the carbon fiber third reflector component (1-4) is coaxially nested in the carbon fiber first reflector (1-3) and is positioned between the carbon fiber fourth reflector component (1-5) and the visible light focal plane component (1-6); the carbon fiber third reflector component (1-4) receives incident light from the carbon fiber second reflector (1-2) and reflects the light to the carbon fiber fourth reflector component (1-5), and the carbon fiber fourth reflector component (1-5) reflects the light to the visible light focal plane component (1-6) for imaging.

2. The center-supported carbon fiber multifunctional remote sensing camera as claimed in claim 1, wherein the carbon fiber force-bearing tower component (1-1) comprises: the device comprises a vertical support (1-1-1), an upper end carbon fiber circular ring, a main bearing structure and a lower end carbon fiber circular ring; the upper end carbon fiber circular ring, the main bearing structure and the lower end carbon fiber circular ring are coaxially distributed from top to bottom in sequence; wherein the main bearing structure is used as the middle layer of the carbon fiber bearing tower component (1-1) and is a round platform-shaped cylinder structure, three vertical supports (1-1-1) are uniformly arranged in the circumferential direction, each vertical support (1-1-1) is of a strip-shaped sheet structure, the length direction of the three vertical supports (1-1-1) is parallel to the axial direction of the main bearing structure, the width direction of the three vertical supports is along the radial direction of the main bearing structure, the thickness direction of the three vertical supports is along the circumferential direction of the main bearing structure, the upper ends and the lower ends of the three vertical supports (1-1-1) are respectively connected with an upper end carbon fiber circular ring and a lower end carbon fiber circular ring, a bearing tower two-mirror interface (1-1-2) is reserved on the upper end carbon fiber circular ring, a bearing tower substrate interface (1-1-4) is reserved on the lower end carbon fiber circular ring, and a bearing tower four-mirror interface (1-1-3) is reserved at the small end of the main bearing structure; the upper end of the vertical support (1-1-1) is widened along the radial direction of the main bearing structure, and the lower end of the vertical support is thickened along the circumferential direction of the main bearing structure.

3. The center-supported carbon fiber multifunctional remote sensing camera according to claim 2, wherein the carbon fiber fourth mirror assembly (1-5) comprises: a carbon fiber fourth reflector (1-5-1) and a fourth reflector flexible support (1-5-2); the carbon fiber fourth reflector (1-5-1) is of a disc-shaped structure, and the center of the carbon fiber fourth reflector is provided with a light through hole; the fourth reflector flexible support (1-5-2) is arranged at one axial end of the carbon fiber fourth reflector (1-5-1);

wherein the carbon fiber fourth mirror (1-5-1) comprises: a fourth reflector panel (1-5-1-1), a lightweight diagonal rib IV (1-5-1-2) and a mandrel III (1-5-1-5); the fourth reflector panel (1-5-1-1) is a circular panel which is coaxially sleeved on the mandrel III (1-5-1-5), more than three light-weight diagonal ribs IV (1-5-1-2) are arranged between the fourth reflector panel (1-5-1-1) and the mandrel III (1-5-1-5) along the circumferential direction of the mandrel III (1-5-1-5), each light-weight diagonal rib IV (1-5-1-2) is of a right-angle trapezoid sheet structure, one end of the direction of the height is connected with the outer circumferential surface of the mandrel III (1-5-1-5), the long bottom edge is connected with the carbon fiber fourth reflector (1-5-1), and the opposite end of the direction of the height is connected with the outer circumferential surface III (1-5-1-3); a fourth reflector interface (1-5-1-4) is reserved on the outer circumferential surface of the mandrel III (1-5-1-5);

the fourth reflector flexible support (1-5-2) adopts a circular ring structure, two circles of annular grooves or regular polygon grooves are formed in the end face of the fourth reflector flexible support (1-5-2) in a wire cutting mode, each circle of annular groove is evenly divided into more than three arc-shaped grooves along the circumferential direction, each circle of regular polygon groove is evenly divided into more than three strip-shaped grooves along the circumferential direction, two adjacent sections of the inner circle of annular groove or regular polygon groove are connected through a rigid connecting rod II (1-5-2-3) of an inner circle, two adjacent sections of the outer circle of annular groove or regular polygon groove are connected through a rigid connecting rod II (1-5-2-3) of an outer circle, the rigid connecting rods II (1-5-2-3) of the inner ring and the outer ring are arranged in a staggered mode, and six sections of flexible connecting rods II (1-5-2-2) are formed between the inner ring groove and the outer ring groove or the regular polygon groove; the inner wall surface of a circular ring of a fourth reflector flexible support (1-5-2) is connected with a mandrel III (1-5-1-5) of a carbon fiber fourth reflector (1-5-1), more than one external interface II (1-5-2-4) is reserved on the outer wall surface of the circular ring along the circumferential direction, and all the external interfaces II (1-5-2-4) are connected with a force-bearing tower four-reflector interface (1-1-3); the inner circumferential surface of the fourth reflector flexible support (1-5-2) is provided with a reflector interface II (1-5-2-1), the reflector interface II (1-5-2-1) is connected with a fourth reflector interface (1-5-1-4) of the carbon fiber fourth reflector (1-5-1), and the rigid connecting rod II (1-5-2-3) of the inner ring is connected with the rigid connecting rod II (1-5-2-3) of the outer ring through a flexible connecting rod II (1-5-2-2).

4. The center-supported carbon fiber multifunctional remote sensing camera as claimed in claim 1, wherein the carbon fiber second reflecting mirror (1-2) is a cylindrical structure, the end surface of one axial end thereof is a light incident surface, the light incident surface is coated with a semi-reflective and semi-transmissive film as a semi-reflective and semi-transmissive surface (1-2-1), and the end surface of the other axial end thereof is a transmissive surface (1-2-2); wherein the carbon fiber second reflecting mirror (1-2) is fixed in the mirror base in a pressing ring or edge covering mode.

5. The centrally supported carbon fiber multifunctional remote sensing camera as claimed in claim 1, wherein the carbon fiber first reflecting mirror (1-3) comprises: a main mirror (1-3-10) and a substrate (1-3-11); the main reflector (1-3-10) is of a circular ring structure, a flange (1-3-5) is coaxially arranged between the outer circumference I (1-3-3) and the inner circumference, the main reflector (1-3-10) and the base plate (1-3-11) are in an integrated coaxial design, and the central axis of the main reflector and the base plate is a mandrel (1-3-7); a light-weight diagonal rib I (1-3-2) is arranged between the turned-over edge (1-3-5) and the outer circumference I (1-3-3), and the light-weight diagonal rib I (1-3-2) is rectangular, triangular or fan-shaped;

the base plate (1-3-11) is of a regular polygon or round frame structure, a base plate lightening groove (1-3-8) is formed in the circumferential direction of the base plate (1-3-11), lightweight inclined ribs II (1-3-9) are arranged between the base plate (1-3-11) and the mandrel (1-3-7) in a staggered mode, and an interface of the carbon fiber bearing tower component (1-1) and an interface of the visible light focal plane component (1-6) are reserved at the intersection of the lightweight inclined ribs II (1-3-9); and a substrate interface (1-3-6) is designed on the side surface or the lower end surface of the substrate (1-3-11).

6. The center-supported carbon fiber multifunctional remote sensing camera according to claim 1, wherein the carbon fiber third mirror assembly (1-4) comprises: the carbon fiber third reflector (1-4-1), the third reflector flexible support (1-4-2) and the third reflector lightweight support (1-4-3); the carbon fiber third reflector (1-4-1) is of a disc-shaped structure, a light through hole is formed in the center of the carbon fiber third reflector, the third reflector lightweight support (1-4-3) is of a cylindrical structure form, the carbon fiber third reflector (1-4-1) is installed at one axial end of the third reflector lightweight support (1-4-3) through the third reflector flexible support (1-4-2), and the other axial end of the third reflector lightweight support (1-4-3) is supported on the triangular base;

wherein the carbon fiber third mirror (1-4-1) comprises: a third reflector panel (1-4-1-1), a lightweight diagonal rib III (1-4-1-2) and a mandrel II (1-4-1-5), wherein the third reflector panel (1-4-1-1) is a circular panel which is coaxially sleeved on the mandrel II (1-4-1-5), more than three lightweight diagonal ribs III (1-4-1-2) are arranged between the third reflector panel (1-4-1-1) and the mandrel II (1-4-1-5) along the circumferential direction of the mandrel II (1-4-1-5), each lightweight diagonal rib III (1-4-1-2) is of a right-angle trapezoid sheet structure, and one end of the lightweight diagonal rib III (1-4-1-2) in the height direction is connected with the outer circumferential surface of the mandrel II (1-4-1-5), the long bottom edge is connected with a third reflector panel (1-4-1-1), and the opposite end of one end in the direction of the height is connected with an outer circumference II (1-4-1-3); a third reflector interface (1-4-1-4) is reserved on the outer circumferential surface of the mandrel II (1-4-1-5);

the third reflector flexible support (1-4-2) adopts a circular structure, two circles of annular grooves or regular polygon grooves are formed in the end face of the third reflector flexible support (1-4-2) in a wire cutting mode, each circle of annular groove is evenly divided into more than three arc-shaped grooves along the circumferential direction, each circle of regular polygon groove is evenly divided into more than three strip-shaped grooves along the circumferential direction, two adjacent sections of the inner circle of annular groove or regular polygon groove are connected through a rigid connecting rod I (1-4-2-3) of an inner circle, two adjacent sections of the outer circle of annular groove or regular polygon groove are connected through a rigid connecting rod I (1-4-2-3) of an outer circle, the rigid connecting rods I (1-4-2-3) of the inner ring and the outer ring are arranged in a staggered mode, and six sections of flexible connecting rods I (1-4-2-2) are formed between the inner ring groove and the outer ring groove or the regular polygon groove; the inner wall surface of a circular ring of the third reflector flexible support (1-4-2) is connected with a mandrel II (1-4-1-5) of the carbon fiber third reflector (1-4-1), more than one external interface I (1-4-2-4) is reserved on the outer wall surface of the circular ring along the circumferential direction, and all the external interfaces I (1-4-2-4) are connected with an upper end interface I (1-4-3-1); the inner circumferential surface of the third reflector flexible support (1-4-2) is provided with a reflector interface I (1-4-2-1), the reflector interface I (1-4-2-1) is connected with a third reflector interface (1-4-1-4) of the carbon fiber third reflector (1-4-1), and a rigid connecting rod I (1-4-2-3) of the inner ring is connected with a rigid connecting rod I (1-4-2-3) of the outer ring through a flexible connecting rod I (1-4-2-2);

the third reflector lightweight support (1-4-3) is divided into an upper layer, a middle layer and a lower layer, and the upper end and the lower end of the third reflector lightweight support are respectively an upper end interface I (1-4-3-1) and a lower end interface I (1-4-3-2); the upper end interface I (1-4-3-1) is connected with the third reflector flexible support (1-4-2), and the lower end interface I (1-4-3-2) is arranged on the triangular base and is an external interface; the middle layer is a bearing structure and consists of a middle thin-wall cylinder and three groups of supporting inclined ribs (1-4-3-4) which are uniformly arranged around the thin-wall cylinder along the circumferential direction; between every two supporting diagonal ribs (1-4-3-4), a light-weight hole II (1-4-3-3) shaped like a Chinese character 'mi' is arranged on the thin-wall cylinder, and three groups of light-weight holes II (1-4-3-3) are arranged on the circumferential surface of the thin-wall cylinder along the circumferential direction.

7. The centrally supported carbon fiber multifunctional remote sensing camera as claimed in claim 1, wherein the visible light focal plane assembly (1-6) comprises: a visible light focal plane cylinder (1-6-1) and a visible light focal plane electric box (1-6-2); the visible light focal plane barrel (1-6-1) is a conical barrel, and the visible light focal plane electric box (1-6-2) is arranged at the small end of the visible light focal plane barrel (1-6-1); wherein the visible focal plane barrel (1-6-1) comprises: a bearing cylinder (1-6-1-2), an upper end interface II (1-6-1-1) and a lower end interface II (1-6-1-3) which are arranged at the two axial ends of the bearing cylinder (1-6-1-2); the visible light focal plane electric box (1-6-2) comprises: a visible light focal plane (1-6-2-1), an electric box shell I (1-6-2-3), an electric box rear cover (1-6-2-5) and a prism (1-6-2-6); the electric box shell I (1-6-2-3) is of a cuboid frame structure, two opposite ends of the electric box shell I are respectively provided with a round electric box interface (1-6-2-2) and an electric box rear cover (1-6-2-5), and the electric box interface (1-6-2-2) is used for connecting the electric box shell I (1-6-2-3) with the small end of the visible light focal plane cylinder (1-6-1); the visible light focal plane (1-6-2-1) is arranged inside the electric box shell I (1-6-2-3), and the data interface (1-6-2-4) and the prism (1-6-2-6) are arranged on the side face of the electric box shell I (1-6-2-3).

8. The center-supported carbon fiber multifunctional remote sensing camera as recited in claim 1, wherein the lens assembly (2-1) comprises: a lens barrel (2-1-1), a lens base (2-1-2) and a lens (2-1-4); the lens cone (2-1-1) is a stepped shaft-shaped multi-section cylinder, the diameter of the lens cone is gradually increased from one end to the other end, adjacent cylinders are coaxially connected through a circular truncated cone-shaped cylinder, more than two lens bases (2-1-2) are axially arranged on the inner wall surface of the lens cone (2-1-1), an annular groove is arranged in each lens base (2-1-2) along the circumferential direction of the lens cone (2-1-1), and a lens (2-1-4) is arranged in each lens base (2-1-2); the axial interval between the adjacent lens bases (2-1-2) is adjustable, the large end of the lens cone (2-1-1) is connected with the carbon fiber bearing tower component (1-1) through the circumferential flange interface of the large end, and the small end of the lens cone is connected with the infrared focal plane component (2-2) through the circumferential flange interface of the small end; the relative position between the lens cone (2-1-1) and the infrared focal plane assembly (2-2) is adjusted through the gasket.

9. The center-supported carbon fiber multifunctional remote sensing camera according to claim 1, wherein the infrared focal plane assembly (2-2) comprises: the infrared focal plane (2-2-1), the circuit board II (2-2-3) and the electric box shell II (2-2-4); the infrared focal plane (2-2-1) is given by an optical system, the photosensitive surface of the detector is aligned with the infrared focal plane (2-2-1) when the detector is installed, and a circuit board II (2-2-3) and a power supply are sequentially arranged behind the detector; and an installation interface of a reference prism and an infrared focal plane interface (2-2-2) are reserved on the electric box shell II (2-2-4), and the infrared focal plane interface (2-2-2) is used for connecting the infrared focal plane component (2-2) and the lens component (2-1).

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