A rapid printing optical system

Abstract

The application relates to the technical field of optical printing, in particular to a rapid printing optical system. The wind pressure control module is used in the generation of parallel fluid of a polymerization inhibitor with a certain pressure, can provide certain supporting action for a semi-permeable element, prevents deformation of the semi-permeable element, and can continuously take away the polymerization heat generated in the printing process, prevents the problem that the semi-permeable element is deformed due to high temperature, meanwhile, the application only provides the polymerization inhibitor, the support for the semi-permeable element and heat dissipation through a set of wind pressure control systems, and the cost is further reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical printing, and in particular to a rapid printing optical system. BACKGROUND

[0002] At present, with the development of technology, the 3D printing technology of light curing molding is becoming mature, and compared with the mainstream FDM 3D printing mode in the market, the light curing molding has higher printing precision and faster printing speed.

[0003] The existing light curing printing technology mainly includes SLA stereolithography technology, DLP light curing technology and LCD light curing technology. Due to the use of layer-by-layer printing movement mode, the printing model generally has the phenomenon of layering, which makes the model forming precision low. Moreover, since the SLA stereolithography technology adopts the point-by-point curing principle, and the DLP and LCD light curing technologies need to complete the demolding process in the layer-by-layer curing process, the above three processes still have the problem of slow printing speed.

[0004] In the related technology, the continuous liquid surface molding technology is adopted, which has high molding precision and fast printing speed. Moreover, since the continuous liquid surface molding technology adopts the "from bottom to top" movement mode, it has the characteristics of saving resin and low energy consumption. However, the continuous liquid surface molding technology in the related technology is expensive and has high printing cost, which is not conducive to the popularization of consumer-level applications. Therefore, further improvement is needed for this situation. SUMMARY

[0005] In order to solve the problem of high cost in the existing printing using the continuous liquid surface molding technology, the present application provides a rapid printing optical system, which adopts the following technical scheme:

[0006] A rapid printing optical system comprises:

[0007] A resin tank;

[0008] A carrier;

[0009] A build plate, the build plate comprises a semi-permeable element, the semi-permeable element comprises a build surface, the carrier and the build surface define a build area, the build area is filled with a polymerizable liquid material, and the polymerizable liquid material is in contact with the build surface;

[0010] A collimated light source module for emitting parallel light sources, the collimated light source module adopts an LCD screen for optical projection;

[0011] A light-transmitting element for passing through the parallel light sources and protecting the collimated light source system;

[0012] A wind pressure control module is arranged between the light-transmitting element and the semi-permeable element and the side wall of the resin tank to form an air duct, and the wind pressure control module is used to send air between the air ducts to generate the polymerization inhibitor and take away the heat between the light-transmitting element and the semi-permeable element, and the polymerization inhibitor contacts the polymerizable liquid material through part of the semi-permeable element to form a polymerization inhibition area.

[0013] The parallel light source emitted by the collimated light source module passes through the light-transmitting element, the polymerization inhibitor and the semi-permeable element in sequence and irradiates on the build area to form the solid polymer from the polymerizable liquid material, and the subsequent build area is generated between the solid polymer and the build surface when the carrier is lifted away from the build surface.

[0014] By using the above technical scheme, the continuous liquid surface forming technology is applied to the LCD screen, and the LCD screen needs to be close to the polymerizable liquid material to cure the polymerizable liquid material. The parallel light source is emitted by the collimated light source module of the LCD screen, and then the polymerizable liquid material is formed into a solid polymer through the light-transmitting element, the polymerization inhibitor and the semi-permeable element. The semi-permeable element through which the polymerization inhibitor passes is arranged between the light-transmitting element and the semi-permeable element, and the polymerization inhibitor contacts the polymerizable liquid material through the semi-permeable element to form a polymerization inhibition area. Therefore, the LCD screen can be close to the polymerizable liquid material, and the polymerization inhibition area is formed in the LCD screen and the polymerizable liquid material, thereby avoiding the adhesion between the cured polymer and the light-transmitting element, ensuring the parallel light focusing effect of the collimated light source module of the LCD screen. On the other hand, compared with the traditional LCD light curing technology, the polymerizable liquid material does not need to be repositioned after backflow, which is beneficial to the rapid backflow and replenishment of the polymerizable liquid material. Since the semi-permeable element generally has a small thickness and a certain distance between the light-transmitting element, the middle part of the semi-permeable element has no supporting effect, and due to the cumulative effect of the polymerization heat generated during the printing process, high temperature phenomenon occurs in the middle part, which causes the semi-permeable element to deform to a certain extent, thereby affecting the printing precision. The wind pressure control module is used to generate a parallel fluid of the polymerization inhibitor with a certain pressure, and to provide a certain supporting effect for the semi-permeable element to prevent the deformation of the semi-permeable element, and to continuously take away the polymerization heat generated during the printing process to prevent the deformation of the semi-permeable element due to high temperature. At the same time, the application only provides the polymerization inhibitor, the support for the semi-permeable element and the heat dissipation through a set of wind pressure control system, thereby further reducing the cost.

[0015] Optionally, the air pressure control system comprises a blowing unit and a suction unit, the blowing unit is arranged on one side of the light-transmitting element, the suction unit is arranged on the other side of the light-transmitting element away from the blowing unit, a flow guide cover is arranged between the blowing unit and the light-transmitting element and between the suction unit and the light-transmitting element, and the radius of the flow guide cover gradually increases in the direction away from the light-transmitting element.

[0016] By adopting the above technical solution, the air pressure control module comprises the blowing unit and the suction unit, air is blown on one side of the light-transmitting element and air is sucked on the other side, parallel air is formed between the light-transmitting element and the semi-permeable element, the flow guide cover is arranged to increase the flow rate of air when entering between the light-transmitting element and the semi-permeable element, so that heat is more easily taken away, and the semi-permeable element is supported by air pressure.

[0017] Optionally, the suction unit is provided with a temperature sensor, the temperature sensor is used to collect the outlet air temperature passing through the air duct, and the supply air temperature is adjusted according to the outlet air temperature.

[0018] By adopting the above technical solution, the temperature sensor is arranged in the suction unit to detect the outlet air temperature passing through the air duct, so that the supply air temperature is adjusted by using the outlet air temperature to prevent the temperature from exceeding the degradation temperature of the polymerizable liquid due to temperature rise.

[0019] Optionally, the system further comprises a deformation detection module, the deformation detection module is used to detect the deformation condition of the semi-permeable element, and the deformation condition comprises upward deformation and downward deformation.

[0020] There is a power difference between the blowing unit and the suction unit, when the semi-permeable element is deformed downward, the system controls the blowing power of the blowing unit to be greater than the suction power of the suction unit, so that positive pressure is formed between the light-transmitting element and the semi-permeable element; when the semi-permeable element is deformed upward, the system controls the blowing power of the blowing unit to be less than the suction power of the suction unit, so that negative pressure is formed between the light-transmitting element and the semi-permeable element.

[0021] By adopting the technical scheme, since the middle part of the semi-permeable element is not supported in the process of optical printing, and the heat accumulation effect caused by the polymerization heat in the printing process causes high temperature in the middle part, resulting in a certain degree of downward deformation of the middle part of the semi-permeable element; and since in the process of optical printing, if adhesion occurs during the upward movement of the carrier, the semi-permeable element may be moved upward, resulting in a certain degree of upward deformation of the middle part of the semi-permeable element; no matter whether the semi-permeable element deforms upward or downward, it will affect the printing precision. The deformation detection module is arranged to detect the deformation of the semi-permeable element, the power of the air blowing unit and the air suction unit is controlled, so that there is a wind speed difference between the air blowing unit and the air suction unit, when the semi-permeable element deforms downward, a positive pressure is formed between the light-transmitting element and the semi-permeable element, thereby supporting the lower part of the semi-permeable element; when the semi-permeable element deforms upward, a negative pressure is formed between the light-transmitting element and the semi-permeable element, thereby reducing the deformation of the semi-permeable element.

[0022] Optionally, the deformation detection module comprises an imaging unit and a first analysis unit, the imaging unit is embedded in the air duct side wall and is used for shooting a target image of the semi-permeable element; the first analysis unit is used for analyzing the target image and obtaining the deformation of the semi-permeable element, wherein the deformation includes upward deformation and downward deformation.

[0023] By adopting the technical scheme, the imaging module and the first analysis unit are arranged to shoot a target image of the semi-permeable element and analyze the image, thereby obtaining the deformation of the semi-permeable element, the power of the air blowing unit and the air suction unit is controlled, so that there is a wind speed difference between the air blowing unit and the air suction unit, when the semi-permeable element deforms downward, a positive pressure is formed between the light-transmitting element and the semi-permeable element, thereby supporting the lower part of the semi-permeable element; when the semi-permeable element deforms upward, a negative pressure is formed between the light-transmitting element and the semi-permeable element, thereby reducing the deformation of the semi-permeable element.

[0024] Optionally, the deformation detection module comprises a second analysis unit and a plurality of laser displacement sensors, the plurality of laser displacement sensors are embedded at different angles of the air duct side wall and are used for emitting laser and receiving feedback signals; the second analysis unit is used for analyzing the feedback signals and obtaining the deformation of the semi-permeable element, wherein the polymerizable liquid material has a low hardening degree in the range of the laser wavelength, and the deformation includes upward deformation and downward deformation.

[0025] By adopting a plurality of laser displacement sensors, the deformation of the semi-permeable element is detected, wherein the polymerizable liquid material has a low degree of hardening in the range of the laser wavelength, so that the laser of the laser displacement sensor has a smaller impact on the printing. A second analysis unit is arranged to analyze the deformation of the semi-permeable element, and the deformation of the semi-permeable element is obtained. Then, the power of the air blowing unit and the air suction unit is controlled to make the air speed difference between the air blowing unit and the air suction unit. When the semi-permeable element deforms downward, a positive pressure is formed between the light-transmitting element and the semi-permeable element, thereby supporting the lower part of the semi-permeable element. When the semi-permeable element deforms upward, a negative pressure is formed between the light-transmitting element and the semi-permeable element, thereby reducing the deformation of the semi-permeable element.

[0026] Optionally, the collimating light source module comprises a first array light source, a first array lens and a first LCD screen. The light emitted by the first array light source passes through the first array lens to form a parallel light source and is projected onto the first LCD screen.

[0027] Optionally, the collimating light source module comprises a second array light source, a second array lens, a first Fresnel lens and a second LCD screen. The light emitted by the second array light source passes through the second array lens and the Fresnel lens to form a parallel light source and is projected onto the second LCD screen.

[0028] Optionally, the collimating light source module comprises a COB light source, an optical collimating lens and a third LCD screen. The light emitted by the COB light source passes through the optical collimating lens to form a parallel light source and is projected onto the third LCD screen.

[0029] Optionally, the collimating light source module is an LCD chip light machine.

[0030] In summary, the present application has at least one of the following beneficial technical effects:

[0031] 1. The wind pressure control module of the present application is used to generate a parallel fluid of the polymerization inhibitor with a certain pressure, and to provide support for the semi-permeable element to prevent deformation of the semi-permeable element. The present application can continuously remove the polymerization heat generated during the printing process to prevent the semi-permeable element from deforming due to high temperature. At the same time, the present application only uses a set of wind pressure control system to provide the polymerization inhibitor, support for the semi-permeable element and heat dissipation, thereby further reducing the cost.

[0032] 2. The application sets up an imaging module and a first analysis module, which are used for shooting a target image of the semi-permeable element and analyzing the image to obtain the deformation of the semi-permeable element, and by controlling the power of the air blowing unit and the air suction unit, a wind speed difference exists between the air blowing unit and the air suction unit, when the semi-permeable element deforms downward, a positive pressure is formed between the light transmission element and the semi-permeable element, thereby supporting the lower part of the semi-permeable element; when the semi-permeable element deforms upward, a negative pressure is formed between the light transmission element and the semi-permeable element, thereby reducing the deformation of the semi-permeable element.

[0033] 3. The application adopts a plurality of laser displacement sensors to detect the deformation of the semi-permeable element, wherein the polymerizable liquid material has a low hardening degree in the range of the laser wavelength, so that the laser of the laser displacement sensor has a smaller impact on the printing, a second analysis unit is arranged to analyze the deformation of the semi-permeable element to obtain the deformation of the semi-permeable element, and then the power of the air blowing unit and the air suction unit is controlled to make a wind speed difference exist between the air blowing unit and the air suction unit, when the semi-permeable element deforms downward, a positive pressure is formed between the light transmission element and the semi-permeable element, thereby supporting the lower part of the semi-permeable element; when the semi-permeable element deforms upward, a negative pressure is formed between the light transmission element and the semi-permeable element, thereby reducing the deformation of the semi-permeable element. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 is a structure schematic diagram of a rapid printing optical system according to an embodiment of the application;

[0035] Figure 2 is a module schematic diagram of a deformation detection module according to an embodiment of the application;

[0036] Figure 3 is a first structure schematic diagram of a collimating light source module according to an embodiment of the application;

[0037] Figure 4 is a second structure schematic diagram of a collimating light source module according to an embodiment of the application;

[0038] Figure 5 is a third structure schematic diagram of a collimating light source module according to an embodiment of the application;

[0039] Figure 6 is a fourth structure schematic diagram of a collimating light source module according to an embodiment of the application.

[0040] Reference signs: 110, resin tank; 120, carrier; 130, build plate; 131, semi-permeable element; 1311, build surface; 140, collimated light source module; 1411, first array light source; 1412, first array lens; 1413, first LCD screen; 1421, second array light source; 1422, second array lens; 1423, first Fresnel lens; 1424, second LCD screen; 1431, COB light source; 1432, optical collimating lens; 1433, third LCD screen; 144, LCD chip light machine; 1441, second light source; 1442, LCOS chip; 1443, optical lens; 1444, second Fresnel lens; 1445, fourth LCD screen; 150, light-transmitting element; 160, wind pressure control module; 161, blowing unit; 162, air suction unit; 163, deflector; 170, air duct; 180, deformation detection module; 181, imaging unit; 182, first analysis unit; 183, second analysis unit; 184, laser displacement sensor. DETAILED DESCRIPTION

[0041] The terminology used in the following embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used in the description of the embodiments of the application and the appended claims, the singular forms "a," "an" and "the" are intended to include both singular and plural forms, unless the context clearly indicates otherwise. It will be further understood that the terms "and / or," as used in the description of the embodiments of the application, refers to any one or more of the listed possibilities.

[0042] Hereinafter, the terms "first" and "second" are used only for the purpose of description, and cannot be understood as implying or suggesting relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features, and in the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0043] The embodiments of the present application disclose a rapid printing optical system. Referring to Figure 1 , the rapid printing optical system includes a resin tank 110, a carrier 120, a build plate 130, a collimated light source module 140, a light-transmitting element 150, and a wind pressure control module 160.

[0044] The build plate 130 comprises a semi-permeable element 131, the semi-permeable element 131 comprises a build surface 1311, the build carrier 120 and the build surface 1311 define a build area, the build area is filled with a polymerizable liquid material, the polymerizable liquid material is in contact with the build surface 1311; the collimated light source module 140 is used for emitting parallel light source, the collimated light source module 140 uses an LCD screen for optical projection; the light-transmitting element 150 is used for passing the parallel light source and protecting the collimated light source system; the air pressure control module 160, the light-transmitting element 150 and the resin tank 110 side wall form an air duct 170 between the semi-permeable element 131; the air pressure control module 160 is used for blowing air between the air duct 170 to generate a polymerization inhibitor and take away the heat between the light-transmitting element 150 and the semi-permeable element 131; wherein the polymerization inhibitor is in contact with the polymerizable liquid material through part of the semi-permeable element 131 to form a polymerization inhibition area. In the embodiment, the polymerization inhibitor is air sent by the air pressure control module 160.

[0045] When the system works, the parallel light source emitted by the collimated light source module 140 passes through the light-transmitting element 150, the polymerization inhibitor and the semi-permeable element 131 in turn, and irradiates on the build area to form a solid polymer from the polymerizable liquid material; when the build carrier 120 is lifted away from the build surface 1311, a subsequent build area is generated between the solid polymer and the build surface 1311, and finally a 3D printed article is formed.

[0046] With reference to Figure 1 The air pressure control system comprises a blowing unit 161 and a suction unit 162, the blowing unit 161 is arranged on one side of the light-transmitting element 150, the suction unit 162 is arranged on the other side of the light-transmitting element 150 away from the blowing unit 161, a flow guide cover 163 is arranged between the blowing unit 161 and the light-transmitting element 150 and between the suction unit 162 and the light-transmitting element 150, the flow guide cover 163 gradually increases in radius away from the light-transmitting element 150, increases the flow rate of the air when entering between the light-transmitting element 150 and the semi-permeable element 131, so as to more easily take away the heat, and the air pressure supports the semi-permeable element 131.

[0047] Further, the suction unit 162 is provided with a temperature sensor (not shown in the figure) for collecting the outlet air temperature passing through the air duct 170, so as to adjust the blowing temperature according to the outlet air temperature, thereby cooling the semi-permeable element 131.

[0048] Due to the fact that the middle part of the semi-permeable element 131 is not supported in the process of optical printing, and due to the fact that the polymerization heat generated in the printing process, the thermal accumulation effect will cause high temperature phenomenon in the middle part, resulting in a certain degree of downward deformation of the middle part of the semi-permeable element 131; and due to the fact that in the process of optical printing, if adhesion occurs during the upward movement of the carrier 120, the semi-permeable element 131 may be moved upward, resulting in a certain degree of upward deformation of the middle part of the semi-permeable element 131; no matter the semi-permeable element 131 deforms upward or downward, it will affect the printing accuracy.

[0049] With reference to Figure 2 Optionally, in some embodiments, the system further comprises a deformation detection module 180 for detecting the deformation of the semi-permeable element 131, wherein the deformation includes upward deformation and downward deformation. There is a power difference between the blowing unit 161 and the suction unit 162, when the semi-permeable element 131 deforms downward, the system controls the blowing power of the blowing unit 161 to be greater than the suction power of the suction unit 162, so that a positive pressure is formed between the light-transmitting element 150 and the semi-permeable element 131, thereby supporting the lower part of the semi-permeable element 131; when the semi-permeable element deforms upward, the system controls the blowing power of the blowing unit 161 to be less than the suction power of the suction unit 162, so that a negative pressure is formed between the light-transmitting element 150 and the semi-permeable element 131.

[0050] In a specific embodiment, the deformation detection module 180 comprises an imaging unit 181 and a first analysis unit 182, the imaging unit 181 is embedded in the sidewall of the air duct 170 to avoid blocking the light of the collimated light source module 140, and the imaging unit 181 is used to shoot the target image of the semi-permeable element 131; the first analysis unit 182 is used to analyze the target image and obtain the deformation of the semi-permeable element 131.

[0051] In a specific embodiment, the deformation detection module 180 comprises a second analysis unit 183 and a plurality of laser displacement sensors 184, the plurality of laser displacement sensors 184 are embedded in the sidewall of the air duct 170 at different angles, for emitting laser and receiving feedback signals; the second analysis unit 183 is used to analyze the feedback signals and obtain the deformation of the semi-permeable element 131. By using a plurality of laser displacement sensors 184, the deformation of the semi-permeable element 131 is more accurately detected, wherein the polymerizable liquid material has a low hardening degree in the range of the wavelength of the laser, so that the laser of the laser displacement sensor 184 has less impact on printing.

[0052] Specifically, the polymerizable liquid material used in the present application has a high absorption rate for light sources with a wavelength in the range of 380-540 nm, and the absorption rate can be ignored when the wavelength of the laser is greater than 800 nm. The present application uses a laser with a wavelength of 900 nm.

[0053] Optionally, referring to Figure 3 The collimating light source module 140 includes a first array light source 1411, a first array lens 1412, and a first LCD screen 1413. The light emitted by the first array light source 1411 passes through the first array lens 1412 to form a parallel light source and is projected onto the first LCD screen 1413.

[0054] Optionally, referring to Figure 4 The collimating light source module 140 includes a second array light source 1421, a second array lens 1422, a first Fresnel lens 1423, and a second LCD screen 1424. The light emitted by the second array light source 1421 passes through the second array lens 1422 and the first Fresnel lens 1423 to form a parallel light source and is projected onto the second LCD screen 1424.

[0055] Optionally, referring to Figure 5 The collimating light source module 140 includes a COB light source 1431, an optical collimating lens 1432, and a third LCD screen 1433. The light emitted by the COB light source 1431 passes through the optical collimating lens 1432 to form a parallel light source and is projected onto the third LCD screen 1433.

[0056] Optionally, referring to Figure 6 The collimating light source module 140 is an LCD chip light machine 144. The LCD chip light machine 144 includes a second light source 1441, an LCOS chip 1442, an optical lens 1443, a second Fresnel lens 1444, and a fourth LCD screen 1445. The light emitted by the second light source 1441 passes through the LCOS chip 1442, the optical lens 1443, and the second Fresnel lens 1444 to form a parallel light source and is projected onto the fourth LCD screen 1445.

[0057] The implementation principle of the fast printing optical system according to an embodiment of the present application is as follows: the wind pressure control module 160 is used to generate parallel fluid of the polymerization inhibitor with a certain pressure, and on the other hand, the wind pressure control module 160 can provide a certain supporting effect for the semi-permeable element 131, prevent the semi-permeable element 131 from deforming, and continuously take away the polymerization heat generated in the printing process, prevent the semi-permeable element 131 from deforming due to high temperature, and at the same time, the present application only uses a set of wind pressure control system to provide the polymerization inhibitor, support the semi-permeable element 131, and dissipate heat, thereby further reducing the cost; the deformation detection module 180 is arranged to detect the deformation of the semi-permeable element 131, the power of the air blowing unit 161 and the air suction unit 162 is controlled, so that there is a wind speed difference between the air blowing unit 161 and the air suction unit 162, when the semi-permeable element 131 deforms downward, a positive pressure is formed between the light transmission element 150 and the semi-permeable element 131, thereby supporting the lower part of the semi-permeable element 131; when the semi-permeable element 131 deforms upward, a negative pressure is formed between the light transmission element 150 and the semi-permeable element 131, thereby reducing the deformation of the semi-permeable element 131.

[0058] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, therefore: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A rapid printing optical system characterized by comprising: The system comprises: a resin tank (110); a carrier (120); a build plate (130) comprising a semi-permeable element (131) comprising a build surface (1311), the carrier (120) and the build surface (1311) defining a build area filled with a polymerizable liquid material in contact with the build surface (1311); a collimated light source module (140) for emitting parallel light sources, the collimated light source module (140) using an LCD screen for optical projection; a light-transmitting element (150) for the parallel light sources to pass through, for protecting the collimated light source system; a wind pressure control module (160), the light-transmitting element (150), the semi-permeable element (131) and the sidewall of the resin tank (110) forming an air duct (170) between them; the wind pressure control module (160) is used to send air between the air duct (170) to generate a polymerization inhibitor and to take away the heat between the light-transmitting element (150) and the semi-permeable element (131); wherein the polymerization inhibitor contacts the polymerizable liquid material through part of the semi-permeable element (131) to form a polymerization inhibition area; the parallel light sources emitted by the collimated light source module (140) pass through the light-transmitting element (150), the polymerization inhibitor and the semi-permeable element (131) in turn, and irradiate on the build area to form a solid polymer from the polymerizable liquid material; when the carrier (120) is lifted away from the build surface (1311), a subsequent build area is generated between the solid polymer and the build surface (1311); the wind pressure control system comprises a blowing unit (161) and a suction unit (162), the blowing unit (161) is arranged on one side of the light-transmitting element (150), the suction unit (162) is arranged on the other side of the light-transmitting element (150) away from the blowing unit (161), a flow guide cover (163) is arranged between the blowing unit (161) and the light-transmitting element (150) and between the suction unit (162) and the light-transmitting element (150), the flow guide cover (163) gradually increases in radius in the direction away from the light-transmitting element (150); the flow rate of the wind is increased when entering between the light-transmitting element (150) and the semi-permeable element (131), so as to more easily take away the heat, and the semi-permeable element (131) is supported by the wind pressure; the suction unit (162) is provided with a temperature sensor for collecting the outlet air temperature passing through the air duct (170) to adjust the air supply temperature according to the outlet air temperature; the system further comprises a deformation detection module (180) for detecting the deformation of the semi-permeable element (131), wherein the deformation includes upward deformation and downward deformation; There is a power difference between the blowing unit (161) and the suction unit (162), when the semi-permeable element (131) deforms downward, the system controls the blowing power of the blowing unit (161) to be greater than the suction power of the suction unit (162), so that the semi-permeable element (131) and the light-transmitting element (150) form a positive pressure; when the semi-permeable element (131) deforms upward, the system controls the blowing power of the blowing unit (161) to be less than the suction power of the suction unit (162), so that the semi-permeable element (131) and the light-transmitting element (150) form a negative pressure; The deformation detection module (180) includes an imaging unit (181) and a first analysis unit (182), the imaging unit (181) is embedded in the side wall of the air duct (170), and is used for shooting a target image of the semi-permeable element (131); the first analysis unit (182) is used for analyzing the target image, and obtaining the deformation of the semi-permeable element (131).

2. The rapid printing optical system of claim 1, wherein: The deformation detection module (180) includes a second analysis unit (183) and a plurality of laser displacement sensors (184), a plurality of laser displacement sensors (184) are embedded in different angles of the side wall of the air duct (170), and are used for emitting laser and receiving feedback signals; the second analysis unit (183) is used for analyzing the feedback signals, and obtaining the deformation of the semi-permeable element (131), wherein the polymerizable liquid material has a low hardening degree in the range of the wavelength of the laser.

3. The rapid printing optical system of any of claims 1-2, wherein: The collimated light source module (140) includes a first array light source (1411), a first array lens (1412) and a first LCD screen (1413), the light emitted by the first array light source (1411) passes through the first array lens (1412) to form a parallel light source and is projected onto the first LCD screen (1413).

4. The rapid printing optical system of any one of claims 1-2, wherein: The collimated light source module (140) includes a second array light source (1421), a second array lens (1422), a first Fresnel lens (1423) and a second LCD screen (1424), the light emitted by the second array light source (1421) passes through the second array lens (1422) and the Fresnel lens to form a parallel light source and is projected onto the second LCD screen (1424).

5. The rapid printing optical system of any of claims 1-2, wherein: The collimated light source module (140) includes a COB light source (1431), an optical collimating lens (1432) and a third LCD screen (1433), the light emitted by the COB light source (1431) passes through the optical collimating lens (1432) to form a parallel light source and is projected onto the third LCD screen (1433).

6. The rapid printing optical system of any of claims 1-2, wherein: The collimated light source module (140) is an LCD chip light machine (144).

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