Non-contact photoelectric liquid level sensor

Abstract

The invention relates to the field of photoelectric liquid level sensors, and particularly discloses a non-contact photoelectric liquid level sensor which comprises a water tank, a sensor assembly is arranged on the outer side of the water tank, the sensor assembly comprises a mounting cylinder arranged on the outer side of the water tank, and a lens seat is arranged at the other end of the mounting cylinder. And the lens holder and the interior of the mounting cylinder are mutually inserted. By the adoption of the structure, the pull head is pulled to enable the pull rope to move outwards, the pull rope moves to drive the connecting rope to move, and the two ends of the connecting rope are fixedly connected with the clamping blocks, so that the clamping blocks move towards the interior of the circular groove while the connecting rope is pulled; therefore, the sensor body can be disassembled and maintained only when the clamping block and the clamping groove are in contact and clamped connection, and the photoelectric liquid level sensor is designed in a combined mode, so that the sensor body can be disassembled flexibly when the photoelectric liquid level sensor is used. And therefore, the sensor is more convenient to use, and meanwhile, the dismounting efficiency of the sensor body is also improved.

Description

Technical Field

[0001] The invention relates to the field of photoelectric liquid level sensors, in particular to a non-contact photoelectric liquid level sensor. Background Art

[0002] With the development of science and technology, various products have appeared in people's lives, such as electronic products, children's toys, daily necessities, lighting equipment and sensors. These products solve various problems encountered in people's lives. Sensors are widely used in industry and are very popular among users. However, the existing non-contact photoelectric liquid level sensors on the market detect the height of the liquid level through the refraction and reflection of the prism.

[0003] According to the Chinese patent with the announcement number "CN213021828U", a photoelectric liquid level sensor is disclosed, and the key points of its technical solution are: it includes a water tank and a new photoelectric liquid level sensor installed at the bottom of the water tank, a conical lens is fixedly installed inside the shell, and the wire is fixedly installed inside the shell by fastening bolts, a waterproof film is arranged on the outside of the conical lens, an infrared light-emitting diode and a photosensitive receiver are fixedly arranged inside the shell, and the infrared light-emitting diode and the photosensitive receiver are electrically connected to the wire respectively, a conical sealing groove is opened at the position where the water tank overlaps with the shell, a rubber sealing ring is fixedly arranged at the position corresponding to the conical sealing groove of the shell, and a buffer pad is fixedly arranged at the bottom of the conical sealing groove; the utility model solves the problem that when the existing photoelectric liquid level sensor is in use, when the water level is lower than the critical liquid level, water drops will gather on the surface of the conical lens, which will affect the accuracy of signal reception, and the sealing of the connection between the sensor and the water tank will be reduced after long-term use;

[0004] It can be known from the above structure that a conical sealing groove is opened at the overlap position of the water tank and the shell, and a rubber sealing ring is provided at the position corresponding to the conical sealing groove of the shell. The rubber sealing ring is arranged inside the conical sealing groove, which is beneficial to improving the sealing performance of the new photoelectric liquid level sensor. A buffer pad is arranged inside the conical sealing groove. When the rubber sealing ring is installed inside the conical sealing groove, the rubber sealing ring squeezes the buffer pad, which can reduce the gap between the rubber sealing ring and the conical sealing groove, thereby further improving the sealing performance. The conical lens of the existing photoelectric liquid level sensor is integrated with the photosensitive receiver and the infrared light emitting diode, and this integrated arrangement is very troublesome when the sensor needs to be inspected and maintained, and if there is still water inside the detected water tank, the sensor cannot be disassembled for inspection and maintenance, thereby reducing the practicality of the sensor. Summary of the invention

[0005] The object of the present invention is to provide a non-contact photoelectric liquid level sensor to solve the problem of being unable to be flexibly disassembled in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides a non-contact photoelectric liquid level sensor, comprising a water tank, a sensor assembly is arranged on the outside of the water tank, the sensor assembly comprises a mounting tube arranged on the outside of the water tank, a lens seat is arranged on the other end of the mounting tube, the lens seat and the interior of the mounting tube are plugged into each other, one end of the lens seat is fixedly connected to a lens body, the other end of the lens seat is provided with a mounting groove, the mounting groove is connected to the lens body, slots are provided on both sides of the mounting groove, all the card slots are provided inside the slots, an insert is plugged into the inside of the slot, one end of the insert is fixedly connected to the lens body, A sensor body is connected, the sensor body and the mounting groove are plugged into each other, circular grooves are provided on both sides of the plug block, a spring is fixedly connected to the inside of the circular groove, the other end of the spring is fixedly connected to a clamping block, the clamping block and the clamping groove are clamped into each other, a notch is provided at the other end of the plug block, the inner side of the clamping block is fixedly connected to a connecting rope, the other end of the plug block is fixedly connected to a connecting column, the other end of the connecting column is fixedly connected to a cover plate, the cover plate covers the mounting groove and the slot, the other end of the connecting rope is fixedly connected to a pull rope, the other end of the pull rope passes through the cover plate and is fixedly connected to a pull head,

[0007] In a further embodiment, a mounting hole is provided on the outside of the water tank, a mounting internal thread is provided on the inside of the mounting hole, a mounting external thread is provided on the outside of one end of the mounting tube, and the mounting internal thread and the mounting external thread are threadedly connected to each other.

[0008] In a further embodiment, a mounting plate is fixedly connected to the surface of the mounting cylinder, mounting through holes are provided on the surface of the mounting plate, mounting screws are inserted into the inside of the mounting through holes, mounting screw holes are provided on the outside of the water tank around the mounting holes, and the mounting screws pass through the mounting through holes and are threadedly connected to the mounting screw holes.

[0009] In a further embodiment, an external sealing groove is formed on the outer side of the water tank around the mounting hole, an external sealing block is fixedly connected to the inner side of the mounting plate, and the external sealing block and the external sealing groove are sealed and clamped to each other.

[0010] In a further embodiment, one end of the mounting tube is fixedly connected to a mounting baffle, an internal sealing groove is opened inside the mounting baffle, and the inner end of the lens seat is located on the peripheral side of the lens body and is fixedly connected to an internal sealing block, and the internal sealing block and the internal sealing groove are sealed and plugged into each other.

[0011] In a further embodiment, the other end of the mounting tube is threadedly connected to the lens seat, the other end of the mounting tube is provided with an external lens thread on the outside, the outer end of the lens seat is fixedly connected with an internal lens thread tube, and the internal lens thread tube and the external lens thread are threadedly connected to each other.

[0012] In a further embodiment, sensor mounting edges are fixedly connected to both sides of the sensor body, sensor mounting openings are provided on surfaces of the sensor mounting edges, sensor screw holes are provided on one side of the plug-in block located on the sensor body, sensor screws are inserted into the interior of the sensor mounting openings, and the sensor screws pass through the sensor mounting openings and are threadedly connected to the sensor screw holes.

[0013] In a further embodiment, sensor wire grooves are provided on both sides of the cover plate, the inner sides of the sensor wire grooves are fixedly connected with extended card columns, the other ends of the extended card columns are fixedly connected with rubber card columns, and card interfaces are formed between the rubber card columns.

[0014] In a further embodiment, a waterproof film is fixedly connected to both the inner and outer sides of the lens body, and the waterproof film is configured as a super-hydrophobic coating. The waterproof film wraps the inner and outer sides of the lens body. The waterproof film has good anti-corrosion properties and can remain stable in various environments to prevent acid and alkali corrosion from damaging the material. The super-hydrophobic coating has high mechanical, chemical and environmental stability and can withstand repeated friction, scouring, acid and alkali corrosion, ultraviolet radiation and harsh temperature tests. A waterproof film is also provided on the inner side of the lens body to avoid fogging inside the lens body due to excessive temperature difference between the inside and outside of the photoelectric liquid level sensor.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] Firstly, in the present invention, after the sensor body is installed, if the sensor body needs to be disassembled for maintenance, the pull rope is moved outward by pulling the pull head, and the connection rope is driven to move under the movement of the pull rope, and the two ends of the connection rope are fixedly connected to the clamping block, so that the clamping block moves toward the inside of the circular groove when the connection rope is pulled, so that the sensor body can be disassembled and maintained when the clamping block and the clamping groove are in contact, and the photoelectric liquid level sensor is a modular design, so that the sensor body can be flexibly disassembled when in use, thereby making it more convenient to use and also increasing the efficiency of disassembling and assembling the sensor body;

[0017] Secondly, in the present invention, a waterproof film is provided on both sides of the lens inside and outside, and the waterproof film is a super-hydrophobic coating. The super-hydrophobic coating can make water droplets slide off the surface quickly without leaving water marks, thereby achieving a good waterproof effect. This characteristic makes the super-hydrophobic coating perform well in moisture-proof and anti-icing aspects. Since liquids and dirt are not easily attached to the surface of the super-hydrophobic coating, it has a strong self-cleaning ability. Dirt and dust on the surface of the object will slide off quickly with the gravity of the water droplets, and the dust and most of the dirt on the surface of the lens body will be removed without leaving water marks, thereby achieving a double self-cleaning effect. The super-hydrophobic coating has good corrosion resistance and can remain stable in various environments to prevent acid and alkali corrosion from damaging the material. The super-hydrophobic coating has high mechanical, chemical and environmental stability and can withstand repeated friction, scouring, acid and alkali corrosion, ultraviolet radiation and harsh temperature tests. A waterproof film is also provided on the inner side of the lens body to avoid the situation where the temperature difference between the inside and outside of the photoelectric liquid level sensor is too large, resulting in fogging inside the lens body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 It is a structural schematic diagram of the mounting hole in the present invention;

[0020] Figure 3 It is a structural schematic diagram of the installation tube in the present invention;

[0021] Figure 4 For the present invention Figure 3 A side view structural schematic diagram of;

[0022] Figure 5 It is a structural schematic diagram of the lens holder in the present invention;

[0023] Figure 6 For the present invention Figure 5 A side view structural schematic diagram of;

[0024] Figure 7 It is a structural schematic diagram of the plug block in the present invention;

[0025] Figure 8 For the present invention Figure 7 Schematic diagram of the side structure.

[0026] In the figure: 1, water tank; 2, sensor assembly; 3, mounting tube; 4, lens seat; 5, lens body; 6, mounting groove; 7, slot; 8, plug block; 9, sensor body; 10, round groove; 11, spring; 12, clamping block; 13, clamping groove; 14, notch; 15, connecting rope; 16, pull rope; 17, pull head; 18, connecting column; 19, cover plate; 20, mounting hole; 21, mounting internal thread; 22, mounting external thread; 23, installation Mounting plate; 24. Mounting through hole; 25. Mounting screw; 26. Mounting screw hole; 27. External sealing groove; 28. External sealing block; 29. ​​Mounting partition; 30. Internal sealing block; 31. External lens thread; 32. Internal lens thread barrel; 33. Sensor mounting edge; 34. Sensor mounting port; 35. Sensor screw hole; 36. Sensor screw; 37. Sensor wire groove; 38. Extension column; 39. Rubber column; 40. Waterproof membrane. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-Figure 8In an embodiment of the present invention, a non-contact photoelectric liquid level sensor includes a water tank 1, a sensor assembly 2 is arranged on the outside of the water tank 1, the sensor assembly 2 includes a mounting tube 3 arranged on the outside of the water tank 1, a lens seat 4 is arranged on the other end of the mounting tube 3, the lens seat 4 and the interior of the mounting tube 3 are plugged into each other, one end of the lens seat 4 is fixedly connected with a lens body 5, the other end of the lens seat 4 is provided with a mounting groove 6, the mounting groove 6 is communicated with the lens body 5, both sides of the mounting groove 6 are provided with slots 7, the interior of the slot 7 is provided with all the card slots 13, an insert block 8 is inserted into the interior of the slot 7, one end of the insert block 8 is fixedly connected with a sensor body 9, the sensor body 9 and the mounting groove 6 are plugged into each other, both sides of the insert block 8 are provided with circular grooves 10, the interior of the circular groove 10 is fixedly connected with a spring 11, the other end of the spring 11 is fixedly connected with a card block 12, the card block 12 and the card slot 13 are carded into each other, the other end of the insert block 8 is provided with a notch 14, the inner side of the card block 12 is fixedly connected The other end of the plug block 8 is fixedly connected to a connecting column 18, and the other end of the connecting column 18 is fixedly connected to a cover plate 19. The cover plate 19 covers the mounting groove 6 and the slot 7. The other end of the connecting rope 15 is fixedly connected to a pull rope 16, and the other end of the pull rope 16 passes through the cover plate 19 and is fixedly connected to a pull head 17. The inner and outer sides of the lens body 5 are fixedly connected with a waterproof film 40, and the waterproof film 40 is set as a super-hydrophobic coating. The waterproof film 40 wraps the inner and outer sides of the lens body 5. The waterproof film 40 is a super-hydrophobic coating. The super-hydrophobic coating can make water droplets slide quickly on the surface without leaving any water marks, thereby achieving a good waterproof effect. This characteristic makes the super-hydrophobic coating perform well in moisture-proof and anti-icing. Because the surface of the super-hydrophobic coating is not easy to adhere to liquids and dirt, it has a strong self-cleaning ability. The dirt and dust on the surface of the object will slide quickly with the gravity of the water droplets, removing the dust and most of the dirt on the surface of the lens body 5 without leaving any water marks, thereby achieving a double self-cleaning effect.

[0029] See also Figure 2-Figure 4 A mounting hole 20 is provided on the outside of the water tank 1, a mounting internal thread 21 is provided on the inside of the mounting hole 20, and a mounting external thread 22 is provided on the outside of one end of the mounting tube 3. The mounting internal thread 21 and the mounting external thread 22 are threadedly connected to each other; when installing the photoelectric liquid level sensor, the mounting tube 3 and the mounting hole 20 on the surface of the water tank 1 can be installed first under the action of the mounting internal thread 21 and the mounting external thread 22.

[0030] See also Figure 2-Figure 4The surface of the mounting tube 3 is fixedly connected with a mounting plate 23, and the surface of the mounting plate 23 is provided with mounting through holes 24, and mounting screws 25 are inserted into the inside of the mounting through holes 24. The outside of the water tank 1 is provided with mounting screw holes 26 on the surrounding side of the mounting hole 20, and the mounting screws 25 pass through the mounting through holes 24 and are threadedly connected with the mounting screw holes 26. Then, after the mounting tube 3 is installed, the mounting screws 25 can be passed through the mounting through holes 24 and then threadedly connected with the mounting screw holes 26 on the surface of the water tank 1, so that the mounting tube 3 can be further fixed.

[0031] See also Figure 2 and Figure 3 The outside of the water tank 1 is provided with an external sealing groove 27 around the mounting hole 20, and the inner side of the mounting plate 23 is fixedly connected with an external sealing block 28, and the external sealing block 28 and the external sealing groove 27 are sealed and clamped with each other; and after the mounting tube 3 and the mounting hole 20 are installed, the external sealing blocks 28 and the external sealing blocks 28 are in a state of being plugged into each other, so that the interface can be effectively sealed during use to prevent water from leaking through the mounting hole 20.

[0032] See also Figure 3 and Figure 6 One end of the mounting tube 3 is fixedly connected to a mounting baffle 29, an internal sealing groove is opened inside the mounting baffle 29, and the inner end of the lens seat 4 is located on the peripheral side of the lens body 5 and is fixedly connected to an internal sealing block 30, and the internal sealing block 30 and the internal sealing groove are sealed and plugged into each other; by setting the internal sealing block 30 and the internal sealing groove, water leakage can be avoided at the connection between the mounting tube 3 and the lens seat 4 when the lens body 5 is installed.

[0033] See also Figure 3 , Figure 4 and Figure 6 The other end of the mounting tube 3 is threadedly connected with the lens seat 4, and the outer side of the other end of the mounting tube 3 is provided with a lens external thread 31. The outer end of the lens seat 4 is fixedly connected with a lens internal thread tube 32, and the lens internal thread tube 32 and the lens external thread 31 are threadedly connected to each other; by inserting the lens seat 4 into the interior of the mounting tube 3, and then rotating the lens internal thread tube 32 to align the lens external thread 31 on the outer side of the mounting tube 3, the lens seat 4 and the lens body 5 can be installed.

[0034] See also Figure 8Both sides of the sensor body 9 are fixedly connected with sensor mounting edges 33, and the surfaces of the sensor mounting edges 33 are provided with sensor mounting openings 34. A sensor screw hole 35 is provided on one side of the plug block 8 located on the sensor body 9. A sensor screw 36 is inserted into the interior of the sensor mounting opening 34. The sensor screw 36 passes through the sensor mounting opening 34 and is threadedly connected with the sensor screw hole 35. First, by placing the sensor body 9 on one side of the plug block 8, and by passing the sensor screw 36 through the sensor mounting opening 34 and threadingly connecting it with the sensor screw hole 35, the sensor body 9 and the plug block 8 can be installed.

[0035] See also Figure 8 , sensor wire grooves 37 are opened on both sides of the cover plate 19, and the inner side of the sensor wire grooves 37 is fixedly connected with extension clamps 38, and the other ends of the extension clamps 38 are fixedly connected with rubber clamps 39, and a clamp interface is formed between the rubber clamps 39; then the wires of the sensor body 9 pass through the card interface and enter the interior of the sensor wire grooves 37, so that the sensor wires can be limited.

[0036] The working principle of the present invention is as follows: during installation, the installation tube 3 and the installation hole 20 on the surface of the water tank 1 can be installed first under the action of the installation internal thread 21 and the installation external thread 22. After the installation tube 3 and the installation hole 20 are installed, the external sealing block 28 and the external sealing block 28 are in a state of being plugged into each other, so that the interface can be effectively sealed during use to prevent water from leaking through the installation hole 20. By plugging the lens holder 4 into the interior of the installation tube 3, and then rotating the lens internal thread tube 32 to align the lens external thread 31 on the outside of the installation tube 3, the lens holder 4 and the lens body 5 can be installed. The internal sealing block 30 and the internal sealing groove can be set so that when the lens body 5 is installed, When the sensor body 9 needs to be disassembled and repaired during use, the pull rope 16 is moved outward by pulling the pull head 17, and the movement of the pull rope 16 drives the connecting rope 15 to move, and the two ends of the connecting rope 15 are fixedly connected to the connecting block 12, so that the connecting block 12 moves toward the inside of the circular groove 10 while the connecting rope 15 is pulled. , so that the sensor body 9 can be disassembled and maintained when the clamping block 12 and the clamping groove 13 are in contact and clamped. The photoelectric liquid level sensor is a modular design so that the sensor body 9 can be flexibly disassembled during use, and then it can be used normally after the installation is completed. The photoelectric liquid level sensor body 9 contains a near-infrared light emitting diode and a photosensitive receiver. When the sensor body 9 is in the air, the light emitted by the LED will be directly reflected back to the photosensitive receiver under the action of the lens body 5. When the lens body 5 of the sensor assembly 2 is immersed in the liquid, the light will be reflected or refracted at the interface between the liquid and the air, thereby changing the light path reaching the photosensitive receiver, so that the liquid level can be monitored. Detection effect, and the waterproof film 40 is arranged on the inner and outer sides of the lens, and the waterproof film 40 is a super-hydrophobic coating, which can make water droplets slide down quickly on the surface without leaving water marks, thereby achieving a good waterproof effect. This characteristic makes the super-hydrophobic coating perform well in moisture-proof and anti-icing aspects. Since the surface of the super-hydrophobic coating is not easy to adhere to liquids and dirt, it has a strong self-cleaning ability. The dirt and dust on the surface of the object will slide down quickly with the gravity of the water droplets, and the dust and most of the dirt on the surface of the lens body 5 will be removed without leaving water marks, achieving a double self-cleaning effect. The super-hydrophobic coating has good anti-corrosion performance, can remain stable in various environments, and prevent acid and alkali corrosion from damaging the material. The super-hydrophobic coating has high mechanical, chemical and environmental stability.It can withstand repeated friction, scouring, acid and alkali corrosion, ultraviolet radiation and harsh temperature tests, and a waterproof film 40 is also set on the inner side of the lens body 5 to avoid the situation where the temperature difference between the inside and outside of the photoelectric liquid level sensor is too large, which leads to fogging inside the lens body 5, and avoids the situation where too much material on the surface of the lens body 5 or fogging inside the lens body 5 causes the light to be unable to be refracted, resulting in the inability to achieve effective detection.

Claims

1. A non-contact photoelectric liquid level sensor, characterized in that: The invention comprises a water tank, wherein a sensor assembly is arranged on the outside of the water tank, wherein the sensor assembly comprises a mounting tube arranged on the outside of the water tank, wherein a lens seat is arranged on the other end of the mounting tube, wherein the lens seat and the inside of the mounting tube are plugged into each other, wherein a lens body is fixedly connected to one end of the lens seat, wherein a mounting groove is arranged on the other end of the lens seat, wherein the mounting groove is communicated with the lens body, wherein slots are arranged on both sides of the mounting groove, wherein all the card-joining slots are arranged inside the slots, wherein an insert block is plugged into the inside of the slot, wherein one end of the insert block is fixedly connected to the sensor body, wherein the sensor The main body and the mounting groove are plugged into each other, and circular grooves are provided on both sides of the plug block, and a spring is fixedly connected to the inside of the circular groove, and the other end of the spring is fixedly connected to a clamping block, and the clamping block and the clamping groove are clamped with each other. A notch is provided at the other end of the plug block, and the inner side of the clamping block is fixedly connected to a connecting rope, and the other end of the plug block is fixedly connected to a connecting column, and the other end of the connecting column is fixedly connected to a cover plate, and the cover plate covers the mounting groove and the slot, and the other end of the connecting rope is fixedly connected to a pull rope, and the other end of the pull rope passes through the cover plate and is fixedly connected to a pull head.

2. A non-contact photoelectric liquid level sensor according to claim 1, characterized in that: The outer side of the water tank is provided with a mounting hole, the inner side of the mounting hole is provided with a mounting internal thread, the outer side of one end of the mounting tube is provided with a mounting external thread, and the mounting internal thread and the mounting external thread are threadedly connected to each other.

3. A non-contact photoelectric liquid level sensor according to claim 1, characterized in that: The surface of the mounting tube is fixedly connected with a mounting plate, the surface of the mounting plate is provided with mounting through holes, the inside of the mounting through holes is inserted with mounting screws, the outside of the water tank is provided with mounting screw holes around the mounting holes, the mounting screws pass through the mounting through holes and are threadedly connected with the mounting screw holes.

4. A non-contact photoelectric liquid level sensor according to claim 3, characterized in that: The outer side of the water tank is provided with an external sealing groove around the mounting hole, and the inner side of the mounting plate is fixedly connected with an external sealing block, and the external sealing block and the external sealing groove are sealed and clamped with each other.

5. The non-contact photoelectric liquid level sensor according to claim 1, characterized in that: One end of the mounting tube is fixedly connected with a mounting baffle, an internal sealing groove is opened inside the mounting baffle, and the inner end of the lens seat is fixedly connected with an internal sealing block on the peripheral side of the lens body, and the internal sealing block and the internal sealing groove are sealed and plugged with each other.

6. A non-contact photoelectric liquid level sensor according to claim 1, characterized in that: The other end of the mounting tube is threadedly connected to the lens seat, the other end of the mounting tube is provided with a lens external thread on the outside, the outer end of the lens seat is fixedly connected with a lens internal thread tube, and the lens internal thread tube and the lens external thread are threadedly connected to each other.

7. The non-contact photoelectric liquid level sensor according to claim 1, characterized in that: Both sides of the sensor body are fixedly connected with sensor mounting edges, the surfaces of the sensor mounting edges are provided with sensor mounting openings, the plug block is located on one side of the sensor body and is provided with sensor screw holes, the interior of the sensor mounting openings is plugged with sensor screws, and the sensor screws pass through the sensor mounting openings and are threadedly connected to the sensor screw holes.

8. The non-contact photoelectric liquid level sensor according to claim 1, characterized in that: Both sides of the cover plate are provided with sensor wire grooves, the inner sides of the sensor wire grooves are fixedly connected with extension clamping columns, the other ends of the extension clamping columns are fixedly connected with rubber clamping columns, and a clamping interface is formed between the rubber clamping columns.

9. The non-contact photoelectric liquid level sensor according to claim 1, characterized in that: The inner and outer sides of the lens body are both fixedly connected with waterproof films, and the waterproof films are configured as super-hydrophobic coatings, and the waterproof films wrap the inner and outer sides of the lens body.

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