Microgravity fluid shaping curved surface optical lens manufacturing device and method

Abstract

The invention provides a microgravity fluid shaping curved surface optical lens manufacturing device and method, and belongs to the fields of optics, spacecraft on-orbit manufacturing and the like. The whole device is composed of a material pretreatment module, a feeding control module, a microgravity environment simulation module and a photocuring module. The core technical point of the method is that fluid forms a required ultra-smooth continuous curved surface under different boundary conditions through fluid surface tension driving under a microgravity condition, and then net-size rapid forming of the curved surface optical lens is realized through an in-situ curing technology. The curved-surface optical lens prepared by the invention has the remarkable advantages of high surface smoothness, simple manufacturing process, low cost, short period and high surface shape design flexibility, and can be used for manufacturing an oversized optical lens in a space microgravity environment, thereby breaking through the size bottleneck of ground manufacturing emission of a large optical lens.

Description

Technical Field

[0001] The invention relates to a device and method for manufacturing a microgravity fluid-shaped curved optical lens, and belongs to the fields of optics and aerospace. Technical Background

[0002] In the future, in production and life, it is necessary to accurately and quickly identify and observe targets such as personnel, vehicles, small and medium-sized ships, and mechanical equipment in real time with a meter-level resolution. According to calculations, the aperture of the main mirror of a satellite optical system with this resolution must reach more than ten meters. The traditional subtractive method of preparing large optical lenses requires multiple process steps such as casting, rough grinding, fine grinding, and polishing. The process requires a large amount of mirror material to be melted and transferred to a large-scale precision mold for cooling to form a blank. The lens blank is then ground and polished for several months to gradually approach the designed curved surface shape.

[0003] In order to realize large-size lenses, large sintering furnaces and precision grinding equipment need to be customized and developed, resulting in the high cost of large telescope primary mirrors prepared by traditional processes. In addition, the primary mirrors produced by sintering and grinding processes consume a lot of energy and are accompanied by a large amount of material loss. At the same time, the primary mirrors of large telescopes prepared by traditional processes have a long production cycle and a high scrap rate. The grinding and polishing process takes months or even years, and any operation and measurement errors in the process will cause irreversible damage to the mirror surface. Finally, the caliber of the primary mirror manufactured on the ground is limited by the existing rocket carrying capacity and fairing size, and it is difficult to further break through the caliber of the primary mirror of a single optical system. In addition, since the lens has to withstand the impact overload of the launch process, extremely high strength requirements are placed on the mirrors used for ground-made launches, resulting in limited material selection and difficulty in lightweighting. Summary of the invention

[0004] The technical problem solved by the present invention is as follows: to overcome the shortcomings of the prior art, and to propose a device and method for manufacturing a microgravity fluid-shaped curved optical lens, so as to break through the bottleneck of the traditional optical lens manufacturing process, which has high cost, long processing cycle and the caliber is limited by the rocket envelope size.

[0005] The technical solution of the present invention is:

[0006] The present invention discloses a microgravity fluid shaping curved surface optical lens manufacturing device, comprising a material pretreatment module, a feed control module, a microgravity environment simulation module, a fluid shaping module and a light curing module; wherein:

[0007] The material pretreatment module includes a material pretreatment tank and a fluid shaping mold feed pipeline; the material pretreatment tank contains fluid shaping raw materials and is connected to the feed control module through the fluid shaping mold feed pipeline;

[0008] The feeding control module adopts a fully enclosed structure design to avoid the risk of material escape under microgravity conditions, and can complete the mixing, degassing and supply of materials; it adopts a variable frequency feeding mode to adjust the feeding mode according to different feeding amounts and feeding rheological characteristics to achieve on-demand feeding;

[0009] The microgravity environment simulation module includes a fluid shaping mold feed pipe and an integrated molding cylinder, and the microgravity environment simulation is realized by adjusting the density of the fluid shaping medium material in the integrated molding cylinder; one end of the fluid shaping mold feed pipe is connected to the feed control module, and the other end is connected to the fluid shaping module;

[0010] The light curing module is fixed above the integrated molding cylinder and has the functions of light power adjustment, regional exposure, stroboscopic exposure, light scattering and direct exposure.

[0011] Furthermore, in the above-mentioned device, the material pretreatment module also includes a positive-pressure air pump, a vacuum pump, a liquid mixer, a compressed air pump valve, a vacuum pump valve, and a material outlet valve; wherein a compressed air pump valve and a vacuum pump valve are provided on the top of the material pretreatment tank, the compressed air pump valve is connected to the positive-pressure air pump through a first gas duct, and the vacuum pump valve is connected to the vacuum pump through a second gas duct, which are used to adjust the positive and negative pressures inside the material pretreatment tank to achieve the processing and extrusion control of the fluid shaping raw materials in the material pretreatment tank; the liquid mixer is provided with paddles, which are placed in the material pretreatment tank and are used for uniform mixing of the materials in the material pretreatment tank; the material outlet valve is placed at the bottom of the side wall of the material pretreatment tank, and is connected to the feed control module through the fluid shaping mold feed pipeline.

[0012] Furthermore, in the above-mentioned device, the feed control module includes a control module, an eccentric screw pump and a screw pump feed port; the eccentric screw pump is equipped with a flow sensor for measuring the discharge volume; the screw pump feed port is connected to the fluid shaping mold feed pipeline; the control module controls the eccentric screw pump to gradually pump the required volume of fluid shaping raw materials into the fluid shaping module.

[0013] Furthermore, in the above-mentioned device, the microgravity environment simulation module also includes a fluid shaping mold feed pipe, a shock absorbing table, an optical lens molding mold bracket, a heating platform and a temperature sensor; wherein the heating platform is placed on the shock absorbing table; the one-piece molding cylinder is placed on the heating table; the temperature sensor is placed in the one-piece molding cylinder; one end of the fluid shaping mold feed pipe is connected to the eccentric screw pump, and the other end is connected to the fluid shaping module placed on the optical lens molding mold bracket.

[0014] Furthermore, in the above device, the fluid shaping module includes a fluid shaping mold and a sealing plug; one end of the sealing plug is connected to the fluid shaping mold, and the other end is placed outside the integral molding cylinder.

[0015] Furthermore, in the above-mentioned device, the photocuring module includes an array-type ultraviolet light source, a light intensity adjustment filter, a honeycomb grating and a UV protection box, wherein the array-type ultraviolet light source, the light intensity adjustment filter, and the honeycomb grating are fixed in sequence from top to bottom directly above the one-piece molded cylinder; the UV protection box is wrapped around the array-type ultraviolet light source, the light intensity adjustment filter, the honeycomb grating and the one-piece molded cylinder for ultraviolet protection.

[0016] Furthermore, in the above-mentioned device, the fluid shaping mold includes a mold body, a lens shaping hole, a feed flow channel, a feed flow channel inlet and a feed flow channel opening; wherein, the lens forming hole is located at the center of the mold body, and the fluid shaping material forms a lens in the lens forming hole driven by surface tension; the feed flow channel surrounds the lens forming hole, and a feed flow channel opening is provided on the side of the feed flow channel facing the lens forming hole, and the fluid shaping material enters the lens forming hole through the feed flow channel opening; one end of the feed flow channel inlet is connected to the feed flow channel, and the other end is connected to the feed control module.

[0017] The present invention discloses a fluid shaping method for curved optical lenses based on a microgravity environment, comprising:

[0018] S1. Pretreatment: Add the required fluid shaping raw materials into the material pretreatment tank, open the vacuum pump valve and close the material outlet valve, start the liquid mixer, and achieve mixing and vacuum defoaming of the fluid shaping raw materials;

[0019] S2. Raw material metering: After the fluid shaping raw materials are fully mixed and free of bubbles, close the vacuum pump valve and open the material outlet valve and the compressed air pump valve, and start the positive pressure air pump to press the fluid shaping raw materials in the material pretreatment tank into the eccentric screw pump; the control module controls the eccentric screw pump to gradually pump the required volume of fluid shaping raw materials into the feed channel;

[0020] S3, fluid shaping: the fluid shaping raw material flows into the lens shaping hole through the opening of the material supply flow channel; after the material supply stops, it is left to stand for a suitable period of time, and the fluid shaping raw material is driven by its own surface tension to form a smooth curved surface in the lens shaping hole;

[0021] S4, in-situ curing: Turn on the heating platform to gradually heat up the fluid shaping material in the one-piece molding cylinder to the required temperature under the detection of the temperature sensor, turn on the array-type ultraviolet light source to in-situ cure the lens formed by the fluid shaping material in the lens shaping hole to obtain a curved optical lens.

[0022] Furthermore, in the above method, the fluid shaping raw material is a mixture of one or more of photocurable polymer monomers and oligomer fluids, thermosetting resins, liquid metals, and mercury.

[0023] Furthermore, in the above method, the fluid shaping medium material and the fluid shaping raw material have the same density and are immiscible.

[0024] The beneficial effects of the present invention compared to the prior art are as follows:

[0025] (1) The surface roughness of the lens manufactured by the microgravity fluid shaping technology of the present invention is as low as nanometer level. The surface area of ​​the fluid under the action of surface tension tends to be minimized, making the surface of the fluid as smooth and flat as possible. Therefore, multiple process steps such as cutting, grinding, and coating in traditional processes are avoided, and the net size forming of the surface with nanometer-level smoothness is achieved, which has the significant advantages of simple manufacturing process, low cost, short cycle and.

[0026] (2) The degree of freedom in surface design of optical lenses manufactured using fluid shaping technology in the present invention will be greatly improved; because the fluid can be shaped into various shapes (concave, convex, free-form surface) through different boundary conditions, it has higher flexibility and adaptability; compared with traditional solid materials, it is easier to manufacture free-form surface lenses.

[0027] (3) The present invention uses fluid shaping technology to manufacture large optical lenses on-orbit, which has the potential to break through the upper limit of the caliber of optical lenses prepared by traditional processes, effectively avoiding the impact load during rocket launch and the envelope limitation during transportation. In addition, in the microgravity environment of space, the elimination of gravity terms makes it theoretically possible to manufacture optical lenses of super-large sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Schematic diagram of a fluid shaping device for curved optical lenses based on a microgravity environment according to Embodiment 1 of the present invention;

[0029] Figure 2 Schematic diagram of a fluid shaping mold for a curved optical lens according to Embodiment 1 of the present invention;

[0030] Figure 3 This is a flow chart of fluid shaping of curved optical lenses based on a microgravity environment of the present invention;

[0031] Figure 4 It is a surface morphology diagram of the one-step formed fluid-shaped curved optical lens prepared by the present invention. DETAILED DESCRIPTION

[0032] Hereinafter, the present invention will be described in detail based on the drawings.

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] like Figure 1 As shown, the present invention discloses a microgravity fluid shaping curved optical lens manufacturing device, comprising a material pretreatment module, a feed control module, a microgravity environment simulation module, a fluid shaping module and a light curing module; wherein,

[0035] The material pretreatment module includes a material pretreatment tank 1 and a fluid shaping mold feed pipeline 9; the material pretreatment tank 1 is filled with fluid shaping raw materials, and is connected to the feed control module through the fluid shaping mold feed pipeline 9 to achieve material mixing and degassing;

[0036] A feed control module, including a control module 24 and an eccentric screw pump 10; a variable frequency feed mode is adopted to adjust the feed mode according to different feed amounts and feed rheological characteristics to achieve on-demand feeding;

[0037] The microgravity environment simulation module includes a fluid shaping mold feed pipe 12 and an integrated molding cylinder 13. The microgravity environment simulation is achieved by adjusting the density of the fluid shaping medium material in the integrated molding cylinder 13. One end of the fluid shaping mold feed pipe 12 is connected to the feed control module, and the other end is connected to the fluid shaping module.

[0038] The light curing module is fixed above the integrated molding cylinder 13 and has the functions of light power adjustment, regional exposure, stroboscopic exposure, light scattering and direct exposure.

[0039] Preferably, the material pretreatment module also includes a positive pressure air pump 2, a vacuum pump 3, a liquid mixer 5, a compressed air pump valve 4, a vacuum pump valve 8, and a material outlet valve 7; wherein, a compressed air pump valve 4 and a vacuum pump valve 8 are provided on the top of the material pretreatment tank 1, the compressed air pump valve 4 is connected to the positive pressure air pump 2 through a first gas duct 6, and the vacuum pump valve 8 is connected to the vacuum pump 3 through a second gas duct 6', which are used to adjust the positive and negative pressure inside the material pretreatment tank 1, so as to realize the processing and extrusion control of the fluid shaping raw materials in the material pretreatment tank 1; the liquid mixer 5 is provided with paddles, which are placed in the material pretreatment tank 1, and are used for uniform mixing of the materials in the material pretreatment tank 1; the material outlet valve 7 is placed at the bottom of the side wall of the material pretreatment tank 1, and is connected to the feed control module through the fluid shaping mold feed pipeline 9.

[0040] Preferably, the feed control module includes a control module 24, an eccentric screw pump 11 and a screw pump feed port 10; the eccentric screw pump 11 is equipped with a flow sensor for measuring the discharge volume; the screw pump feed port 10 is connected to the fluid shaping mold feed pipeline 9; the control module 24 controls the eccentric screw pump 10 to gradually pump the required volume of fluid shaping raw materials into the fluid shaping module.

[0041] Preferably, the microgravity environment simulation module further includes a fluid shaping mold feed pipe 12, a damping platform 14, an optical lens molding mold bracket 16, a heating platform 15 and a temperature sensor 19; wherein the heating platform 15 is placed on the damping platform 14; the integral molding cylinder 13 is placed on the heating platform 15; the temperature sensor 19 is placed in the integral molding cylinder 13; one end of the fluid shaping mold feed pipe 12 is connected to the eccentric screw pump 11, and the other end is connected to the fluid shaping module placed on the optical lens molding mold bracket 16. The temperature control capability within the range of 25 to 300°C can be achieved through the temperature sensor and the heating platform.

[0042] Preferably, the fluid shaping module includes a fluid shaping mold 17 and a sealing plug 18 ; one end of the sealing plug 18 is connected to the fluid shaping mold 17 , and the other end is placed outside the integral molding cylinder 13 .

[0043] Preferably, the photocuring module includes an arrayed ultraviolet light source 20, a light intensity adjustment filter 22, a honeycomb grating 23 and a UV protection box 21, wherein the arrayed ultraviolet light source 20, the light intensity adjustment filter 22, and the honeycomb grating 23 are fixed in sequence from top to bottom directly above the one-piece molding cylinder 13; the UV protection box 21 is wrapped around the arrayed ultraviolet light source 20, the light intensity adjustment filter 22, the honeycomb grating 23 and the one-piece molding cylinder 13 for ultraviolet protection.

[0044] Preferably, the fluid shaping mold 17 includes a mold body 29, a lens shaping hole 28, a feed channel 26, a feed channel inlet 25 and a feed channel opening 27; wherein the lens shaping hole 28 is located at the center of the mold body 29, and the fluid shaping material forms a lens in the lens shaping hole 28 driven by surface tension; the feed channel 26 surrounds the lens shaping hole 28, and the feed channel opening 27 is provided on the side of the feed channel 26 facing the lens shaping hole 28, and the fluid shaping material enters the lens shaping hole 28 through the feed channel opening 27; one end of the feed channel inlet 25 is connected to the feed channel 26, and the other end is connected to the feed control module. Figure 2 shown.

[0045] The present invention discloses a fluid shaping method for curved optical lenses based on a microgravity environment, comprising:

[0046] S1, pretreatment: add the required fluid shaping raw materials into the material pretreatment tank 1, open the vacuum pump valve 8 and close the material outlet valve 7, start the liquid mixer 5, and achieve mixing and vacuum defoaming of the fluid shaping raw materials;

[0047] S2, raw material metering: after the fluid shaping raw material is fully mixed and free of bubbles, close the vacuum pump valve 8 and open the material outlet valve 7 and the compressed air pump valve 4, start the positive pressure air pump 2 to press the fluid shaping raw material in the material pretreatment tank 1 into the eccentric screw pump 11; the control module 24 controls the eccentric screw pump 10 to gradually pump the required volume of the fluid shaping raw material into the feed channel 26;

[0048] S3, fluid shaping: remove the sealing plug 18, and the fluid shaping material flows into the lens shaping hole 28 through the material supply channel opening 27; after the material supply stops, let it stand for a suitable time, and the fluid shaping material forms a smooth curved surface in the lens shaping hole 28 driven by its own surface tension;

[0049] S4, in-situ curing: Turn on the heating platform 15 to gradually heat up the fluid shaping material in the integral molding cylinder 13 to the required temperature under the detection of the temperature sensor 19, turn on the array-type ultraviolet light source 20 to in-situ cure the lens formed by the fluid shaping material in the lens shaping hole 28 to obtain a curved optical lens.

[0050] Preferably, the fluid shaping raw material is a mixture of one or more of photocurable polymer monomers and oligomer fluids, thermosetting resins, liquid metals, and mercury.

[0051] Preferably, the fluid shaping medium material and the fluid shaping raw material have the same density and are immiscible.

[0052] Example

[0053] Theoretical basis of the invention: The maximum droplet diameter that a fluid can maintain is negatively correlated with gravity, so under microgravity conditions, theoretically, the droplet can maintain an infinite size. Further, by regulating the volume of the fluid and the boundary conditions in which it is located, the fluid is driven by its own surface energy to form a variety of lens forms such as smooth convex lenses, concave lenses, and free-form surfaces. Finally, combined with controlled in-situ curing forming technology, the fluid in the lens form is in-situ cured to form a solid lens that can be used for a long time in a space environment.

[0054] like Figure 1As shown, an embodiment of the present invention provides a microgravity fluid shaping curved optical lens manufacturing device, including a material pretreatment module, a feed control module, a microgravity environment simulation module, a fluid shaping module, and a light curing module. The material pretreatment module includes a material pretreatment tank, a positive pressure air pump, a vacuum pump, a liquid mixer, a compressed air pump valve, a vacuum pump valve, and a material outlet valve. The top of the material pretreatment tank is provided with a compressed air pump valve and a vacuum pump valve and is connected to the positive pressure air pump and the vacuum pump through a gas duct to adjust the positive and negative pressure inside the tank to realize internal material processing and extrusion control. The liquid mixer paddle is placed in the material pretreatment tank to evenly mix the materials therein. The material outlet valve is placed at the bottom of the material pretreatment tank and is fed through a screw pump of the fluid shaping mold feed pipeline and the feed control module. The feed inlet is connected, the feed control module includes an eccentric screw pump and a screw pump feed inlet, the eccentric screw pump is provided with a flow sensor for accurately measuring the discharge volume, the microgravity environment simulation module includes an integrated molding cylinder, an optical lens molding mold, a fluid molding mold feed pipe, a sealing plug, a heating platform, a temperature sensor, and a shock absorbing platform, the heating platform is placed on the shock absorbing platform, the integrated molding cylinder is placed on the heating platform, which is provided with a temperature sensor for temperature control of the molding environment, the microgravity environment simulation module includes a fluid molding mold and a sealing plug, the light curing module includes an array type ultraviolet light source, a light intensity adjustment filter, a honeycomb grating, a control module, and an ultraviolet protection box, the array type ultraviolet light source, the light intensity adjustment filter, and the honeycomb grating are fixed in sequence from top to bottom directly above the integrated molding cylinder, and the outside is wrapped by an ultraviolet protection box.

[0055] The feed control module adopts a fully enclosed structure design to avoid the risk of material escape under microgravity conditions, and can complete the mixing, degassing and supply capabilities of the materials.

[0056] The feed control module adopts variable frequency feeding mode, which adjusts the feeding mode according to different feed amounts and feed rheological characteristics to achieve fast on-demand feeding.

[0057] The microgravity environment simulation module can achieve microgravity environment simulation by adjusting the density of the medium liquid in the one-piece molding cylinder, and can achieve temperature control capabilities within the range of 25 to 300°C through temperature sensors and heating platforms.

[0058] The light curing module has the functions of light power adjustment, area exposure, stroboscopic exposure, light scattering and direct exposure.

[0059] The fluid shaping mold consists of a lens shaping hole, a feed channel, a feed channel inlet and a feed channel opening; the lens shaping hole is located in the center of the mold, and the fluid shaping material forms a lens therein driven by surface tension; the feed channel surrounds the lens shaping hole, and a feed channel opening is provided on the side of the feed channel facing the lens shaping hole, and the fluid shaping material can enter the lens shaping hole through the feed channel opening; the feed channel inlet is connected to the feed control module.

[0060] This embodiment provides a fluid shaping method for curved optical lenses based on a microgravity environment, comprising the following steps: Figure 3 As shown:

[0061] 1) After adding the required photocurable resin monomer and oligomer mixture into the material pretreatment tank, open the vacuum pump valve and close the material outlet valve, start the liquid agitator and vacuum pump through the control module to achieve mixing and vacuum degassing of the fluid shaping raw materials.

[0062] 2) After the fluid shaping raw materials are fully mixed and there are no bubbles, close the vacuum pump valve, open the material outlet valve and the compressed air pump valve, and the control module starts the positive pressure air pump to press the fluid shaping raw materials in the material pretreatment tank into the feed control module through the rubber tube. The control module uses the eccentric screw pump to gradually pump 39.25mL of fluid shaping raw materials through the rubber tube and the mold fluid inlet into the annular fluid channel.

[0063] 3) After removing the sealing plug, the fluid shaping material slowly flows into the lens shaping hole through the opening of the material supply channel until the lens shaping hole with a diameter of 5 cm is filled with the fluid shaping material. After the material supply stops, it is left to stand for 5 minutes. Driven by its own surface tension, the fluid shaping material forms a smooth convex lens in the lens shaping hole.

[0064] 4) Turn on the heating platform to raise the temperature of the fluid shaping material to 50° C. and stabilize it for 2 minutes; turn on the light curing module and continue exposing for 1 minute to in-situ cure the liquid convex lens formed by the fluid shaping material in the lens shaping hole to obtain a convex lens with a smooth surface.

[0065] The surface roughness of the smooth convex lens molded once was measured by AFM microscope. Figure 4 It is shown in the figure. According to calculation, the average surface roughness of the one-step convex lens produced by this process is less than 100nm, which is much lower than that of the lens blank produced by the traditional process, greatly reducing the time required for subsequent grinding and polishing.

[0066] The optical lenses prepared by this method have the significant advantages of simple process, short manufacturing cycle, adjustable surface shape and low surface roughness. It solves the problem of complex manufacturing process and long cycle of traditional mechanically processed optical lenses, such as quartz-based and silicon carbide-based lenses. In addition, in a microgravity environment, after the gravity term is eliminated, it is theoretically possible to manufacture oversized optical lenses, which can break through the bottleneck of optical module caliber caused by the existing rocket carrying capacity and the impact overload during the launch process, and improve the real-time recognition and monitoring accuracy of targets in future production and life.

[0067] It should be noted that the above description is only a preferred embodiment of the present invention. It should be understood that for those skilled in the art, several changes and improvements can be made without departing from the technical concept of the present invention, which are all included in the protection scope of the present invention.

Claims

1. A device for manufacturing a microgravity fluid-shaped curved optical lens, characterized in that: It includes material pretreatment module, feed control module, microgravity environment simulation module, fluid shaping module and light curing module; among them, The material pretreatment module comprises a material pretreatment tank (1) and a fluid shaping mold feed pipeline (9); the material pretreatment tank (1) contains fluid shaping raw materials and is connected to the feed control module via the fluid shaping mold feed pipeline (9) to achieve material mixing and degassing; The feed control module adopts a variable frequency feed mode, and adjusts the feed mode according to different feed amounts and feed rheological characteristics to achieve on-demand feeding; The microgravity environment simulation module comprises a fluid shaping mold feed pipe (12) and an integrated molding cylinder (13), and realizes microgravity environment simulation by adjusting the density of the fluid shaping medium material in the integrated molding cylinder (13); one end of the fluid shaping mold feed pipe (12) is connected to the feed control module, and the other end is connected to the fluid shaping module; The light curing module is fixed above the integrated molding cylinder (13) and has the functions of light power adjustment, regional exposure, stroboscopic exposure, light scattering and direct exposure.

2. The device for manufacturing a microgravity fluid-shaped curved optical lens according to claim 1, characterized in that: The material pretreatment module further comprises a positive pressure air pump (2), a vacuum pump (3), a liquid mixer (5), a compressed air pump valve (4), a vacuum pump valve (8), and a material outlet valve (7); wherein a compressed air pump valve (4) and a vacuum pump valve (8) are provided at the top of the material pretreatment tank (1); the compressed air pump valve (4) and the vacuum pump valve (8) are connected to the positive pressure air pump (2) via a first gas conduit (6); and the vacuum pump valve (8) is connected to the vacuum pump (3) via a second gas conduit (6'), and are used to adjust the positive and negative pressure inside the material pretreatment tank (1) to achieve the processing and extrusion control of the fluid shaping raw materials in the material pretreatment tank (1); the liquid mixer (5) is provided with a paddle, which is placed in the material pretreatment tank (1) and is used to evenly mix the materials in the material pretreatment tank (1); the material outlet valve (7) is placed at the bottom of the side wall of the material pretreatment tank (1) and is connected to the feed control module via a fluid shaping mold feed pipeline (9).

3. The device for manufacturing a microgravity fluid-shaped curved optical lens according to claim 1, characterized in that: The feed control module comprises a control module (24), an eccentric screw pump (11) and a screw pump feed port (10); the eccentric screw pump (11) is provided with a flow sensor for measuring the discharge volume; the screw pump feed port (10) is connected to a fluid shaping mold feed pipeline (9); the control module (24) controls the eccentric screw pump (10) to gradually pump a required volume of fluid shaping raw materials into the fluid shaping module.

4. The device for manufacturing a microgravity fluid-shaped curved optical lens according to claim 3, characterized in that: The microgravity environment simulation module also includes a fluid shaping mold feed pipe (12), a shock absorbing platform (14), an optical lens molding mold bracket (16), a heating platform (15) and a temperature sensor (19); wherein the heating platform (15) is placed on the shock absorbing platform (14); the one-piece molding cylinder (13) is placed on the heating platform (15); the temperature sensor (19) is placed in the one-piece molding cylinder (13); one end of the fluid shaping mold feed pipe (12) is connected to the eccentric screw pump (11), and the other end is connected to the fluid shaping module placed on the optical lens molding mold bracket (16).

5. The device for manufacturing a microgravity fluid-shaped curved optical lens according to claim 1, characterized in that: The fluid shaping module comprises a fluid shaping mold (17) and a sealing plug (18); one end of the sealing plug (18) is connected to the fluid shaping mold (17), and the other end is placed outside the integral molding cylinder (13).

6. The device for manufacturing a microgravity fluid-shaped curved optical lens according to claim 1, characterized in that: The photocuring module comprises an array type ultraviolet light source (20), a light intensity adjustment filter (22), a honeycomb grating (23) and an ultraviolet protection box (21), wherein the array type ultraviolet light source (20), the light intensity adjustment filter (22) and the honeycomb grating (23) are fixed in sequence from top to bottom directly above an integrated molding cylinder (13); and the ultraviolet protection box (21) is wrapped around the array type ultraviolet light source (20), the light intensity adjustment filter (22), the honeycomb grating (23) and the integrated molding cylinder (13) for ultraviolet protection.

7. The device for manufacturing a microgravity fluid-shaped curved optical lens according to claim 1, characterized in that: The fluid shaping mold (17) comprises a mold body (29), a lens shaping hole (28), a feed channel (26), a feed channel inlet (25) and a feed channel opening (27); wherein the lens shaping hole (28) is located at the center of the mold body (29), and the fluid shaping material forms a lens in the lens shaping hole (28) driven by surface tension; the feed channel (26) surrounds the lens shaping hole (28), and a feed channel opening (27) is provided on the side of the feed channel (26) facing the lens shaping hole (28), and the fluid shaping material enters the lens shaping hole (28) through the feed channel opening (27); one end of the feed channel inlet (25) is connected to the feed channel (26), and the other end is connected to a feed control module.

8. A fluid shaping method for curved optical lenses based on a microgravity environment, characterized in that: include: S1, pretreatment: Add the required fluid shaping raw materials into the material pretreatment tank (1), open the vacuum pump valve (8) and close the material outlet valve (7), start the liquid mixer (5), and achieve mixing and vacuum defoaming of the fluid shaping raw materials; S2, raw material metering: after the fluid shaping raw material is fully mixed and free of bubbles, close the vacuum pump valve (8) and open the material outlet valve (7) and the compressed air pump valve (4), start the positive pressure air pump (2) to press the fluid shaping raw material in the material pretreatment tank (1) into the eccentric screw pump (11); the control module (24) controls the eccentric screw pump (10) to gradually pump the required volume of fluid shaping raw material into the feed channel (26); S3, fluid shaping: remove the sealing plug (18), and the fluid shaping material flows into the lens shaping hole (28) through the material supply channel opening (27); after the material supply stops, the material is left to stand for a suitable period of time, and the fluid shaping material forms a smooth curved surface in the lens shaping hole (28) driven by its own surface tension; S4, in-situ curing: turning on the heating platform (15) to gradually heat the fluid shaping material in the integral molding cylinder (13) to a desired temperature under the detection of the temperature sensor (19), turning on the array-type ultraviolet light source (20) to in-situ cure the lens formed by the fluid shaping material in the lens shaping hole (28), and obtaining a curved optical lens.

9. The method for fluid shaping of curved optical lenses based on a microgravity environment according to claim 8, characterized in that: The fluid shaping raw material is a mixture of one or more of light-curing polymer monomers and oligomer fluids, thermosetting resins, liquid metals, and mercury.

10. The method for fluid shaping of curved optical lenses based on a microgravity environment according to claim 8, characterized in that: The fluid shaping medium material has the same density as the fluid shaping raw material and is immiscible.

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