Dustproof optical lens

Abstract

The dustproof optical lens comprises an optical lens main body and a multi-layer mechanism, the multi-layer mechanism is located in the optical lens main body, and the outer walls of the optical lens main body and the multi-layer mechanism are respectively provided with an outer frame dismounting mechanism in a positioning manner. According to the dustproof optical lens provided by the utility model, the hard coating film prevents scratches and abrasion on the surface of the lens, the dustproof coating film prevents dust from being attached easily, the anti-fog coating layer prevents fog from being formed, the blue light-proof layer absorbs blue light, the polarized light layer effectively filters reflected light, the self-cleaning layer decomposes organic pollutants, and the ultraviolet-proof layer blocks ultraviolet rays. The low-surface-energy layer has low surface energy and can reduce adhesion of other substances on the surface of the low-surface-energy layer, the protective coating film is subjected to hardened film treatment, the hardness of the surface of the lens is improved, the anti-radiation layer filters out part of harmful electromagnetic waves, a user can easily take down the lens for cleaning, and it is ensured that the lens keeps good definition all the time.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of optical lens, specifically is a dustproof optical lens. BACKGROUND

[0002] Optical lens is a kind of lens manufactured using optical glass, with high transparency, physical and chemical properties highly uniform and specific optical constant, these lenses are used to change the propagation direction of light, and can change the relative spectral distribution of ultraviolet, visible or infrared light, the application range of optical lens is wide, including microscope, camera, telescope, medical equipment, measuring instrument etc.

[0003] The existing optical lens is single in structure, low in functionality, and easy to adsorb dust, affecting visual clarity, and the service life of the lens is also affected under the condition of frequent contact and friction in daily use, fingerprints and oil stains are also easy to remain on the surface, increasing the cleaning difficulty, and the optical lens body and the lens frame are not convenient to disassemble, which brings certain adverse effects to the use process of people, therefore, we provide a dustproof optical lens. UTILITY MODEL CONTENT

[0004] The technical problem solved is that, in view of the deficiencies of the prior art, the utility model provides a dustproof optical lens, which has the advantages of strengthening the performance of the lens and facilitating disassembly, and can effectively solve the problems in the background art.

[0005] Technical scheme: To achieve the above purpose, the utility model adopts the technical scheme that a dustproof optical lens comprises an optical lens body and a multilayer mechanism, the multilayer mechanism is located inside the optical lens body, outer frames dismounting mechanisms are positioned and installed on the outer walls of the optical lens body and the multilayer mechanism, the multilayer mechanism comprises a wear-resistant layer, a dustproof coating, an anti-fog coating, an anti-blue light layer, a polarizing layer, a self-cleaning layer, an anti-ultraviolet layer, a low-surface-energy layer, a protective coating and an anti-radiation layer.

[0006] Preferably, the multilayer mechanism and the optical lens body are integrally formed.

[0007] Preferably, the anti-radiation layer is located at the upper end of the optical lens body, the wear-resistant layer is located at the upper end of the dust-proof coating, the anti-fog coating is located at the lower end of the dust-proof coating, and the wear-resistant layer is a hard coating that can prevent scratches and wear on the surface of the lens, thereby maintaining the clarity of the lens and increasing the hardness while also increasing the light transmittance of the lens to some extent, making the light pass through the lens more smoothly and improving the visual quality, and also providing some protection to prevent physical damage to the lens during daily use, such as friction, impact, etc. The dust-proof coating is titanium dioxide nanoparticles with high refractive index and good photocatalytic properties, which can decompose organic pollutants under light and have a low surface energy, making it difficult for dust to adhere. The anti-fog coating is polyvinyl alcohol, which can adsorb water molecules to form a uniform water film on the surface instead of small water droplets, thereby preventing the formation of fog and effectively preventing the lens from forming fog in a humid environment, thereby maintaining the clarity of the lens.

[0008] Preferably, the anti-blue light layer is located at the lower end of the anti-fog coating, the polarizing layer is located at the lower end of the anti-blue light layer, and the self-cleaning layer is located at the lower end of the polarizing layer. The anti-blue light layer is a blue light absorber that can absorb blue light and reduce its transmittance, thereby achieving the purpose of blocking blue light. Blue light has a shorter wavelength and higher energy, and long-term exposure to blue light can cause damage to the retina. The anti-blue light layer can effectively filter or reflect harmful blue light, reducing photochemical damage to the retina. The polarizing layer is made of polyvinyl butyral material, which can effectively filter reflected light from smooth surfaces such as water, road surfaces, or snow-covered ground. These reflected lights are usually polarized light, which can cause glare. By filtering these lights, polarized lenses can make the field of view clearer and more comfortable, reducing eye fatigue, especially in situations where you are exposed to strong sunlight for a long time. It makes vision more gentle and reduces the feeling of glare. The self-cleaning layer is made of silica material, which can decompose organic pollutants through a photocatalytic reaction, automatically decompose or repel dirt and grease on the lens, thereby reducing the frequency of cleaning the lens, effectively preventing dust, fingerprints, and grease from adhering to the lens surface, and maintaining the cleanliness and light transmittance of the lens.

[0009] Preferably, the UV-protective layer is located below the self-cleaning layer, the low surface energy layer is located below the UV-protective layer, the protective coating is located below the low surface energy layer, and the anti-radiation layer is located below the protective coating. The UV-protective layer is a UV-protective coating material that, by blocking ultraviolet rays, can improve visual comfort, reduce eye fatigue, reduce the impact of ultraviolet rays on the lens, and extend the lens's lifespan. The low surface energy layer is made of polyethylene material, which has low surface energy and can reduce the adhesion of other substances such as water, oil, and dust to its surface, thereby maintaining the cleanliness and transparency of the lens. The protective coating is made of zinc sulfide material, and through hardening treatment, the surface hardness of the lens is improved, making it more wear-resistant and less prone to scratches, reducing reflected light on the lens surface, thereby improving light transmittance and making the field of vision clearer and brighter. The anti-radiation layer is made of lead glass material, which filters out some harmful electromagnetic waves and reduces radiation damage to the eyes, especially when using computers, mobile phones, or other electronic devices for extended periods of time.

[0010] Preferably, the wear-resistant layer, dustproof coating, anti-fog coating, anti-blue light layer, polarizing layer, self-cleaning layer, anti-ultraviolet layer, low surface energy layer, protective coating and anti-radiation layer are integrally formed.

[0011] Preferably, the outer frame assembly / disassembly mechanism includes a positioning connecting frame, a metal outer protective frame, a triangular positioning buckle, a lens outer frame and an inner positioning card hole, and the outer walls of the optical lens body and the multi-layer mechanism are fixedly connected to the inner wall of the positioning connecting frame.

[0012] Preferably, the upper end of the outer wall of the positioning connecting frame is fixedly connected to the inner wall of the metal outer protective frame, and both sides of the outer wall of the positioning connecting frame are fixedly connected to one side of the triangular positioning buckle. Both sides of the inner wall of the lens outer frame are provided with inner positioning holes. The positioning connecting frame is positioned between itself and the lens outer frame through the triangular positioning buckle and the inner positioning holes.

[0013] Beneficial effects: Compared with the prior art, this utility model provides a dustproof optical lens with the following beneficial effects:

[0014] 1. This dustproof optical lens enhances its overall performance through a multi-layered structure. The abrasion-resistant layer is a hard coating, which prevents scratches and wear on the lens surface, maintaining clarity. In addition to increasing hardness, it also improves light transmittance to a certain extent, allowing light to pass through more smoothly and enhancing visual quality. It also provides some protection against physical damage from daily use, such as friction and impact. The dustproof coating consists of titanium dioxide nanoparticles, which have a high refractive index and good photocatalytic properties. Under light, they can decompose organic pollutants, and their low surface energy makes it difficult for dust to adhere. An anti-fog coating is also included. The first layer is made of polyvinyl alcohol, which can adsorb water molecules to form a uniform water film on the surface, rather than small water droplets, thus preventing fogging. This effectively prevents fogging in humid environments, maintaining lens clarity. The second layer is a blue light absorber that absorbs blue light and reduces its transmittance, thus blocking it. Blue light has a short wavelength and high energy; prolonged exposure may damage the retina. The third layer effectively filters or reflects harmful blue light, reducing photochemical damage to the retina. The fourth layer is made of polyvinyl butyral, which effectively filters reflected light from smooth surfaces such as water, roads, or snow. Light is often polarized, which can cause glare. By filtering this light, polarized lenses can make vision clearer and more comfortable, reducing eye fatigue, especially after prolonged exposure to strong sunlight. They soften vision and reduce glare. The self-cleaning layer is made of silica, which decomposes organic pollutants through photocatalytic reaction, automatically breaking down or repelling dirt and grease on the lenses, thus reducing the frequency of cleaning. It effectively prevents dust, fingerprints, grease, and other contaminants from adhering to the lens surface, maintaining cleanliness and light transmission. The UV protection layer is a UV-protective coating that blocks ultraviolet rays, improving visual comfort and reducing eye fatigue. To reduce the impact of ultraviolet rays on the lenses and extend their lifespan, the low surface energy layer is made of polyethylene, which has low surface energy and can reduce the adhesion of other substances such as water, oil, and dust to its surface, thus maintaining the cleanliness and transparency of the lenses. The protective coating is made of zinc sulfide, and through hardening treatment, the surface hardness of the lenses is improved, making them more wear-resistant and less prone to scratches. It also reduces the reflected light on the lens surface, thereby improving light transmittance and making the field of vision clearer and brighter. The anti-radiation layer is made of lead glass, which filters out some harmful electromagnetic waves and reduces radiation damage to the eyes, especially when using computers, mobile phones, or other electronic devices for extended periods of time.

[0015] 2. This dustproof optical lens, through a set outer frame disassembly and assembly mechanism, positions the optical lens body and multi-layer mechanism inside the positioning connecting frame. The positioning connecting frame is positioned inside the lens outer frame by the engagement between the triangular positioning buckle on its outer wall and the inner positioning buckle hole, making disassembly and assembly convenient. Users can easily remove the lens for cleaning, ensuring that the lens always maintains good clarity. At the same time, different types of lenses can be replaced as needed, such as anti-blue light lenses, anti-ultraviolet lenses, etc., to adapt to different usage environments and needs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a dustproof optical lens according to the present invention.

[0017] Figure 2 This is a schematic diagram of the multi-layer structure of a dustproof optical lens according to the present invention.

[0018] Figure 3 This is a schematic diagram of the multi-layer structure of a dustproof optical lens according to the present invention.

[0019] Figure 4 This is an exploded view of the multi-layer structure of a dustproof optical lens according to this utility model.

[0020] Figure 5 This is a partial structural disassembly diagram of the outer frame assembly and disassembly mechanism in a dustproof optical lens according to this utility model.

[0021] Figure 6 This is a schematic diagram showing the optical lens body, multi-layer mechanism, and positioning connection frame in a dustproof optical lens according to this utility model.

[0022] In the diagram: 1. Optical lens body; 2. Multi-layer structure; 201. Abrasion-resistant layer; 202. Dustproof coating; 203. Anti-fog coating; 204. Anti-blue light layer; 205. Polarizing layer; 206. Self-cleaning layer; 207. Anti-ultraviolet layer; 208. Low surface energy layer; 209. Protective coating; 210. Anti-radiation layer; 3. Outer frame assembly / disassembly mechanism; 301. Positioning connection frame; 302. Metal outer protective frame; 303. Triangular positioning buckle; 304. Lens outer frame; 305. Inner positioning hole. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] like Figures 1-6As shown, a dustproof optical lens includes an optical lens body 1 and a multi-layer mechanism 2. The multi-layer mechanism 2 is located inside the optical lens body 1. Both the optical lens body 1 and the multi-layer mechanism 2 have an outer frame disassembly and assembly mechanism 3 installed on their outer walls. The multi-layer mechanism 2 includes a wear-resistant layer 201, a dustproof coating 202, an anti-fog coating 203, a blue light blocking layer 204, a polarizing layer 205, a self-cleaning layer 206, an ultraviolet protection layer 207, a low surface energy layer 208, a protective coating 209, and an anti-radiation layer 210.

[0025] Furthermore, the multi-layer mechanism 2 and the optical lens body 1 are integrally formed and fixed together.

[0026] Furthermore, the anti-radiation layer 210 is located at the upper end of the optical lens body 1, the abrasion-resistant layer 201 is located at the upper end of the dustproof coating 202, and the anti-fog coating 203 is located at the lower end of the dustproof coating 202. The abrasion-resistant layer 201 is a hard coating, which can prevent scratches and wear on the lens surface, thereby maintaining the clarity of the lens. While increasing hardness, it can also improve the light transmittance of the lens to a certain extent, making light pass through the lens more smoothly, improving visual quality, and also providing a certain degree of protection, protecting the lens from physical damage in daily use, such as friction and collision. The dustproof coating 202 is titanium dioxide nanoparticles, which have a high refractive index and good photocatalytic performance. Under light, it can decompose organic pollutants, and its low surface energy makes it difficult for dust to adhere. The anti-fog coating 203 is polyvinyl alcohol, which can adsorb water molecules, forming a uniform water film on the surface instead of small water droplets, thereby preventing the formation of fog. It can effectively prevent the lens from fogging in a humid environment, thereby maintaining the clarity of the lens and making it easy to use.

[0027] Furthermore, the blue light blocking layer 204 is located below the anti-fog coating 203, the polarizing layer 205 is located below the blue light blocking layer 204, and the self-cleaning layer 206 is located below the polarizing layer 205. The blue light blocking layer 204 is a blue light absorber that can absorb blue light and reduce its transmittance, thereby achieving the purpose of blocking blue light. Blue light has a short wavelength and high energy, and prolonged exposure to blue light may damage the retina. The blue light blocking layer can effectively filter or reflect harmful blue light and reduce photochemical damage to the retina. The polarizing layer 205 is made of polyvinyl butyral material, which can effectively filter reflected light from smooth surfaces such as water, roads, or snow. These reflected lights are usually polarized light, which can cause glare. By filtering these lights, polarized lenses can make the field of vision clearer and more comfortable, reducing eye fatigue, especially when exposed to strong sunlight for a long time. It makes the vision softer and reduces the glare. The self-cleaning layer 206 is made of silica material, which decomposes organic pollutants through photocatalytic reaction and automatically decomposes or repels dirt and grease on the lens, thereby reducing the number of times the lens needs to be cleaned. It effectively prevents pollutants such as dust, fingerprints, and grease from adhering to the lens surface, keeping the lens clean and transparent, and making the field of vision clearer and brighter.

[0028] Furthermore, the UV-protective layer 207 is located below the self-cleaning layer 206, the low surface energy layer 208 is located below the UV-protective layer 207, the protective coating 209 is located below the low surface energy layer 208, and the anti-radiation layer 210 is located below the protective coating 209. The UV-protective layer 207 is a UV-protective coating material, which can improve visual comfort, reduce eye fatigue, reduce the impact of ultraviolet rays on the lens, and extend the lens's lifespan by blocking ultraviolet rays. The low surface energy layer 208 is made of polyethylene material, which has a low surface energy and can reduce its... The protective coating 209 is made of zinc sulfide, which, through hardening treatment, increases the hardness of the lens surface, making it more wear-resistant and less prone to scratches. It also reduces the reflection of light on the lens surface, thereby increasing the light transmittance and making the field of vision clearer and brighter. The anti-radiation layer 210 is made of lead glass, which filters out some harmful electromagnetic waves and reduces radiation damage to the eyes, especially when using computers, mobile phones or other electronic devices for a long time, thus reducing eye damage.

[0029] Furthermore, the wear-resistant layer 201, dustproof coating 202, anti-fog coating 203, anti-blue light layer 204, polarizing layer 205, self-cleaning layer 206, anti-ultraviolet layer 207, low surface energy layer 208, protective coating 209 and anti-radiation layer 210 are integrally formed, which facilitates connection with the optical lens body 1.

[0030] Furthermore, the outer frame assembly / disassembly mechanism 3 includes a positioning connecting frame 301, a metal outer protective frame 302, a triangular positioning buckle 303, a lens outer frame 304, and an inner positioning hole 305. The outer walls of the optical lens body 1 and the multi-layer mechanism 2 are fixedly connected to the inner wall of the positioning connecting frame 301. The positioning connecting frame 301 can be quickly positioned and disassembled with the lens outer frame 304 through the triangular positioning buckle 303 and the inner positioning hole 305.

[0031] Furthermore, the upper end of the outer wall of the positioning connecting frame 301 is fixedly connected to the inner wall of the metal outer protective frame 302. Both sides of the outer wall of the positioning connecting frame 301 are fixedly connected to one side of the triangular positioning buckle 303. Both sides of the inner wall of the lens outer frame 304 are provided with inner positioning holes 305. The positioning connecting frame 301 is positioned with the lens outer frame 304 through the triangular positioning buckle 303 and the inner positioning holes 305. Users can easily remove the lens for cleaning, ensuring that the lens always maintains good clarity. At the same time, different types of lenses can be replaced as needed, such as anti-blue light lenses, anti-ultraviolet lenses, etc., to adapt to different usage environments and needs.

[0032] Working Principle: This dustproof optical lens includes an optical lens body 1 and a multi-layer mechanism 2, which are integrally formed with the optical lens body 1. The multi-layer mechanism 2 improves the performance of the optical lens body 1. The anti-radiation layer 210 is located at the upper end of the optical lens body 1, the abrasion-resistant layer 201 is located at the upper end of the dustproof coating 202, and the anti-fog coating 203 is located at the lower end of the dustproof coating 202. The abrasion-resistant layer 201 is a hard coating, which can prevent scratches and wear on the lens surface, thereby maintaining the clarity of the lens. While increasing hardness, it can also improve the light transmittance of the lens to a certain extent, making light pass through the lens more smoothly, improving visual quality, and also providing a certain degree of protection against physical damage to the lens in daily use, such as friction and impact. The dustproof coating 202 is titanium dioxide nanoparticles, which have a high refractive index and good photocatalytic performance. Under light, it can decompose organic pollutants, and its low surface energy makes it difficult for dust to adhere. The anti-fog coating 203 is polyvinyl alcohol, which can absorb moisture. The anti-fog layer 204 is located below the anti-fog coating 203, the polarizing layer 205 is located below the anti-fog layer 204, and the self-cleaning layer 206 is located below the polarizing layer 205. The anti-fog layer 204 is a blue light absorber that absorbs blue light and reduces its transmittance, thereby blocking blue light. Blue light has a short wavelength and high energy, and prolonged exposure to blue light may damage the retina. The anti-fog layer can effectively filter or reflect harmful blue light and reduce photochemical damage to the retina. The polarizing layer 205 is made of polyvinyl butyral material, which can effectively filter reflected light from smooth surfaces such as water, roads, or snow. This reflected light is usually polarized light, which can cause glare. By filtering these rays, polarized lenses can make the field of vision clearer and more comfortable, reducing eye fatigue, especially when exposed to strong sunlight for a long time.It softens the visual experience and reduces glare. The self-cleaning layer 206, made of silica, decomposes organic pollutants through photocatalytic reaction, automatically breaking down or repelling dirt and grease on the lens, thus reducing the frequency of lens cleaning. It effectively prevents dust, fingerprints, grease, and other contaminants from adhering to the lens surface, maintaining lens cleanliness and light transmission. The UV protection layer 207 is located below the self-cleaning layer 206, the low surface energy layer 208 is located below the UV protection layer 207, the protective coating 209 is located below the low surface energy layer 208, and the anti-radiation layer 210 is located below the protective coating 209. The UV protection layer 207 is a UV-protective coating material that blocks ultraviolet rays, improving visual comfort, reducing eye fatigue, minimizing the impact of ultraviolet rays on the lens, and extending the lens's lifespan. The low surface energy layer 208, made of polyethylene, has a low surface energy, reducing the adhesion of other substances such as water, oil, and dust to its surface, thereby keeping the lens clean. The protective coating 209 is made of zinc sulfide. Through hardening treatment, the hardness of the lens surface is improved, making it more wear-resistant and less prone to scratches. It also reduces the reflection of light on the lens surface, thereby improving light transmittance and making the field of vision clearer and brighter. The anti-radiation layer 210 is made of lead glass, which filters out some harmful electromagnetic waves and reduces radiation damage to the eyes, especially when using computers, mobile phones or other electronic devices for a long time. Through the set outer frame disassembly and assembly mechanism 3, the optical lens body 1 and the multi-layer mechanism 2 are positioned inside the positioning connecting frame 301. The positioning connecting frame 301 is positioned inside the lens outer frame 304 by the engagement between the triangular positioning buckle 303 on its outer wall and the inner positioning buckle hole 305. Disassembly and assembly are relatively convenient. Users can easily remove the lens for cleaning to ensure that the lens always maintains good clarity. At the same time, different types of lenses can be replaced as needed, such as anti-blue light lenses, anti-ultraviolet lenses, etc., to adapt to different usage environments and needs.

[0033] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A dustproof optical lens, comprising an optical lens body (1) and a multi-layer structure (2), characterized in that: The multi-layer mechanism (2) is located inside the optical lens body (1). The outer frame disassembly and assembly mechanism (3) is positioned and installed on the outer wall of both the optical lens body (1) and the multi-layer mechanism (2). The multi-layer mechanism (2) includes a wear-resistant layer (201), a dustproof coating (202), an anti-fog coating (203), a blue light protection layer (204), a polarizing layer (205), a self-cleaning layer (206), an ultraviolet protection layer (207), a low surface energy layer (208), a protective coating (209), and a radiation protection layer (210).

2. The dustproof optical lens according to claim 1, characterized in that: The multi-layer structure (2) is integrally formed with the optical lens body (1).

3. A dustproof optical lens according to claim 2, characterized in that: The anti-radiation layer (210) is located at the upper end of the optical lens body (1), the wear-resistant layer (201) is located at the upper end of the dustproof coating (202), and the anti-fog coating (203) is located at the lower end of the dustproof coating (202). The wear-resistant layer (201) is a hard coating, and the dustproof coating (202) is titanium dioxide nanoparticles, which have high refractive index and good photocatalytic performance. Under light, they can decompose organic pollutants, and their surface energy is low, making it difficult for dust to adhere. The anti-fog coating (203) is polyvinyl alcohol.

4. A dustproof optical lens according to claim 3, characterized in that: The blue light blocking layer (204) is located at the lower end of the anti-fog coating (203), the polarizing layer (205) is located at the lower end of the blue light blocking layer (204), the self-cleaning layer (206) is located at the lower end of the polarizing layer (205), the blue light blocking layer (204) is a blue light absorber, the polarizing layer (205) is a polyvinyl butyral material, and the self-cleaning layer (206) is a silicon dioxide material.

5. A dustproof optical lens according to claim 4, characterized in that: The UV protection layer (207) is located below the self-cleaning layer (206), the low surface energy layer (208) is located below the UV protection layer (207), the protective coating (209) is located below the low surface energy layer (208), and the radiation protection layer (210) is located below the protective coating (209). The UV protection layer (207) is a UV protection coating material, the low surface energy layer (208) is a polyethylene material, the protective coating (209) is a zinc sulfide material, and the radiation protection layer (210) is a lead glass material.

6. A dustproof optical lens according to claim 5, characterized in that: The wear-resistant layer (201), dustproof coating (202), anti-fog coating (203), blue light protection layer (204), polarizing layer (205), self-cleaning layer (206), UV protection layer (207), low surface energy layer (208), protective coating (209) and radiation protection layer (210) are integrally formed.

7. A dustproof optical lens according to claim 6, characterized in that: The outer frame assembly / disassembly mechanism (3) includes a positioning connection frame (301), a metal outer protective frame (302), a triangular positioning buckle (303), a lens outer frame (304) and an inner positioning card hole (305). The outer walls of the optical lens body (1) and the multi-layer mechanism (2) are fixedly connected to the inner wall of the positioning connection frame (301).

8. A dustproof optical lens according to claim 7, characterized in that: The upper end of the outer wall of the positioning connecting frame (301) is fixedly connected to the inner wall of the metal outer protective frame (302). Both sides of the outer wall of the positioning connecting frame (301) are fixedly connected to one side of the triangular positioning buckle (303). Both sides of the inner wall of the lens outer frame (304) are provided with inner positioning holes (305). The positioning connecting frame (301) is positioned with the lens outer frame (304) through the triangular positioning buckle (303) and the inner positioning holes (305).

Images