Multi-band laser protective lens

Abstract

The utility model discloses a multiband laser protective lens which is formed by compounding a substrate layer, a blue light absorption layer, a blue-violet light absorption layer, a green light absorption layer, a strengthening layer, a waterproof layer and an oil-proof layer, the inner surface and the outer surface of the substrate layer are respectively provided with a blue light absorption layer used for absorbing 445 nm blue light, a blue-violet light absorption layer used for absorbing 405 nm blue-violet light is arranged on the surface of the blue light absorption layer, and a green light absorption layer used for absorbing 532 nm green light is arranged on the surface of the blue-violet light absorption layer. The blue light absorption layer, the blue-violet light absorption layer and the green light absorption layer are overlapped to form a laser absorption layer; a strengthening layer is arranged on the surface of the green light absorption layer; a waterproof layer is arranged on the surface of the strengthening layer; an oil-proof layer is arranged on the surface of the waterproof layer. The structure is optimized, the protection performance is excellent, efficient protection on lasers of 405 nm, 445 nm and 532 nm is achieved through the specific layered structure design, and meanwhile high visible light transmittance and good physical durability are guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of lenses, and in particular to a multi-band laser protection lens. Background Technology

[0002] With the widespread application of laser technology in industry, scientific research, medicine, and military fields, the potential harm of lasers to the human eye is becoming increasingly prominent. Different wavelengths of lasers cause different mechanisms and degrees of damage to the eye. For example, 405nm blue-violet lasers have high energy and can cause photochemical damage to the retina; 445nm blue lasers also have strong energy, and prolonged exposure can cause irreversible damage to the eyes; 532nm green lasers are easily absorbed by the retina, leading to retinal burns.

[0003] In many practical applications, operators may face the threat of multiple laser wavelengths simultaneously. For example, a laser processing workshop might use a 405nm laser for photolithography, a 445nm laser for material cutting, and a 532nm laser for welding. However, most existing laser protective lenses can only provide protection against a single wavelength or a few specific wavelengths of laser light, failing to meet the need for simultaneous protection against multiple wavelengths in complex environments. This necessitates operators frequently changing different types of protective eyewear, which is not only extremely inconvenient but also carries the risk of accidental exposure to unprotected laser light, posing a significant safety hazard. Furthermore, existing single-absorption lenses are insufficient for efficient protection against three laser wavelengths simultaneously; reflective lenses are prone to glare and have low visible light transmittance; and most lenses suffer from concentrated energy absorption due to their single layer and lack surface protection against environmental corrosion. After high-power laser irradiation or prolonged use, they are susceptible to coating peeling and decreased protective performance, failing to meet practical protection requirements. Therefore, developing a lens capable of effectively protecting against 405nm, 445nm, and 532nm lasers simultaneously is of significant practical importance.

[0004] In view of this, the inventor, drawing on extensive experience accumulated over a long period of lens manufacturing, conducted in-depth research on existing lenses and specifically developed and designed a multi-band laser protection lens, thus giving rise to this invention. Utility Model Content

[0005] The purpose of this invention is to provide a multi-band laser protective lens with optimized structure and excellent protective performance. Through a specific layered structure design, it achieves efficient protection against 405nm, 445nm, and 532nm lasers, while ensuring high visible light transmittance and good physical durability.

[0006] To achieve the above objectives, the solution of this utility model is:

[0007] A multi-band laser protective lens is composed of a base layer, a blue light absorption layer, a blue-violet light absorption layer, a green light absorption layer, a reinforcing layer, a waterproof layer, and an oil-resistant layer. Blue light absorption layers for absorbing 445nm blue light are respectively disposed on the inner and outer surfaces of the base layer. Blue-violet light absorption layers for absorbing 405nm blue-violet light are respectively disposed on the surfaces of the inner and outer blue light absorption layers. Green light absorption layers for absorbing 532nm green light are respectively disposed on the surfaces of the inner and outer blue-violet light absorption layers. The blue light absorption layer, blue-violet light absorption layer, and green light absorption layer are stacked to form a laser absorption layer. Reinforcing layers are disposed on the surfaces of the inner and outer green light absorption layers. Waterproof layers are disposed on the surfaces of the inner and outer reinforcing layers. Oil-resistant layers are disposed on the surfaces of the inner and outer waterproof layers.

[0008] The base layer is made of PC or PA material.

[0009] The thickness of the base layer is 1.5-2.8 mm.

[0010] The thicknesses of the blue light absorption layer, the blue-violet light absorption layer, and the green light absorption layer are 5-10 μm, respectively.

[0011] The thickness of the reinforcement layer is 3-8 μm.

[0012] The thickness of the waterproof layer is 8-15 nm.

[0013] The thickness of the oil-resistant layer is 8-15 nm.

[0014] With the above-mentioned solution, this utility model features an optimized structure and excellent protective performance. Through a specific layered structure design, a blue light absorption layer absorbs 445nm blue light, a blue-violet light absorption layer absorbs 405nm blue-violet light, and a green light absorption layer absorbs 532nm green light. This allows the same lens to simultaneously absorb three specific wavelengths of laser light, providing highly efficient protection. It can simultaneously adapt to 405nm laser lithography, 445nm laser cutting, and 532nm laser welding, meeting the need for simultaneous protection against multiple wavelengths of laser light in complex environments. This eliminates the need for operators to frequently change different types of protective glasses, making it convenient and safe to use. Moreover, this utility model is an absorptive lens, which does not produce glare and has high visible light transmittance. Furthermore, this utility model utilizes a reinforcing layer for protection, providing wear and scratch resistance, while a waterproof and oil-resistant layer ensures the lens is oil- and stain-resistant. Meanwhile, this invention enhances adhesion through a reinforcing layer, employs a three-layer absorption system (blue light absorption layer, blue-violet light absorption layer, and green light absorption layer) to disperse energy, and utilizes a surface-protective waterproof and oil-resistant layer to isolate environmental erosion. This invention, through a combination of multiple mechanisms, improves upon problems such as film peeling and decreased protective performance. This invention exhibits a light transmittance greater than 90% for light wavelengths above 600nm and a comprehensive light transmittance of 44.46% for visible light (380-780nm). Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments are briefly described below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 yes Figure 1 A magnified view of part A;

[0018] Figure 3 This is an exploded view of the present invention;

[0019] Figure 4 This is the transmission spectrum of this utility model.

[0020] Label Explanation

[0021] Base layer 1, blue light absorption layer 2, blue-violet light absorption layer 3, green light absorption layer 4, reinforcement layer 5, waterproof layer 6, oil-proof layer 7, laser absorption layer 10. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0023] It should be noted that the terms front, back, inside, outside, top, bottom, left, right, first, second, third, etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the technical features indicated, unless otherwise explicitly defined.

[0024] like Figures 1 to 4As shown, this utility model discloses a multi-band laser protective lens, which is composed of a base layer 1, a blue light absorption layer 2, a blue-violet light absorption layer 3, a green light absorption layer 4, a reinforcing layer 5, a waterproof layer 6, and an oil-proof layer 7.

[0025] The base layer 1 can be made of PC or PA material. The thickness of the base layer 1 is 1.5-2.8 mm.

[0026] Blue light absorption layers 2 are respectively disposed on the inner and outer surfaces of the substrate layer 1. These blue light absorption layers 2 are used to absorb 445nm blue light. Blue-violet light absorption layers 3 are respectively disposed on the surfaces of the inner and outer blue light absorption layers 2. These blue-violet light absorption layers 3 are used to absorb 405nm blue-violet light. Green light absorption layers 4 are respectively disposed on the surfaces of the inner and outer blue-violet light absorption layers 3. These green light absorption layers 4 are used to absorb 532nm green light. The blue light absorption layers 2, blue-violet light absorption layers 3, and green light absorption layers 4 are stacked to form the laser absorption layer 10. The thicknesses of the blue light absorption layers 2, blue-violet light absorption layers 3, and green light absorption layers 4 are 5-10μm, respectively.

[0027] A reinforcing layer 5 is respectively applied to the surface of the inner and outer green light absorption layers 4 to give the lens a wear-resistant and scratch-resistant effect. The thickness of the reinforcing layer 5 is 3-8 μm.

[0028] A waterproof layer 6 is respectively provided on the surface of the inner and outer reinforcing layers 5 to serve a waterproof function. The thickness of the waterproof layer 6 is 8-15 nm.

[0029] An oil-resistant layer 7 is provided on the surfaces of the inner and outer waterproof layers 6 to prevent oil damage. The thickness of the oil-resistant layer 7 is 8-15 nm.

[0030] The composite lens of this utility model has a layered stacked structure, with each layer tightly bonded to form a whole. The specific processing technology during manufacturing is as follows:

[0031] Step 1, Fabrication of Base Layer 1:

[0032] The raw material for base layer 1 is PC or PA material. The plastic granules are dehydrated and injection molded to form base layer 1 of the lens, providing structural support for the entire composite lens. The thickness of base layer 1 is controlled between 1.5mm and 2.8mm.

[0033] The second step is the fabrication of the laser absorption layer 10:

[0034] Two blue light absorption layers 2 are respectively disposed on the inner and outer surfaces of the substrate layer 1. These blue light absorption layers 2 are used to absorb 445nm blue light.

[0035] Two blue-violet light absorption layers 3 are respectively disposed on the surfaces of the inner and outer blue light absorption layers 2. These blue-violet light absorption layers 3 are used to absorb 405nm blue-violet light.

[0036] Two green light absorption layers 4 are respectively disposed on the surfaces of the inner and outer blue-violet light absorption layers 3. These green light absorption layers 4 are used to absorb 532nm green light.

[0037] The thicknesses of the blue light absorption layer 2, the blue-violet light absorption layer 3, and the green light absorption layer 4 are 5-10 μm, respectively.

[0038] Blue light absorption layer 2, blue-violet light absorption layer 3, and green light absorption layer 4 are stacked together to form laser absorption layer 10. Table 1 shows the transmittance and optical density of laser absorption layer 10 (blue light absorption layer 2, blue-violet light absorption layer 3, and green light absorption layer 4) for specific wavelengths.

[0039] Table 1

[0040]

[0041]

[0042] Step 3, creating reinforcement layer 5:

[0043] A strengthening liquid is coated on the surfaces of the inner and outer green light absorption layers 4 to form a strengthening layer 5, giving the lens a scratch-resistant and abrasion-resistant effect. The thickness of the strengthening layer 5 is 3-8 μm.

[0044] Step 4, Creating Waterproof Layer 6:

[0045] A waterproof layer 6 is formed by vacuum evaporation on the surfaces of the inner and outer reinforcing layers 5, serving a waterproof function. The thickness of the waterproof layer 6 is 8-15 nm.

[0046] Step 5, Creating the oil-resistant layer 7:

[0047] An oil-resistant layer 7 is formed by vacuum evaporation on the surfaces of the inner and outer waterproof layers 6, serving to prevent oil penetration. The thickness of the oil-resistant layer 5 is controlled between 8-15 nm.

[0048] Thus, a multi-band laser protective lens of this utility model is obtained.

[0049] This utility model discloses a multi-band laser protective lens. The finished product, after testing, shows that... Figure 4 As shown, the transmittance of light wavelengths above 600nm is greater than 90%, and the overall transmittance of visible light (380-780nm) is 44.46%. See Table 2 for the transmittance test report of the lens of this utility model.

[0050] Table 2

[0051]

[0052]

[0053] The above description is merely an example of the implementation of this utility model and is not intended to limit the scope of protection of this utility model. It should be noted that any equivalent changes made by those skilled in the art after reading this specification, based on the design concept of this case, shall fall within the scope of protection of this case.

Claims

1. A multi-band laser protective lens, characterized in that: It is composed of a base layer, a blue light absorption layer, a blue-violet light absorption layer, a green light absorption layer, a reinforcement layer, a waterproof layer, and an oil-resistant layer. Blue light absorption layers for absorbing 445nm blue light are respectively set on the inner and outer surfaces of the base layer. Blue-violet light absorption layers for absorbing 405nm blue-violet light are respectively set on the surfaces of the inner and outer blue light absorption layers. Green light absorption layers for absorbing 532nm green light are respectively set on the surfaces of the inner and outer blue-violet light absorption layers. The blue light absorption layer, blue-violet light absorption layer, and green light absorption layer are stacked to form a laser absorption layer. Reinforcement layers are respectively set on the surfaces of the inner and outer green light absorption layers. Waterproof layers are respectively set on the surfaces of the inner and outer reinforcement layers. Oil-resistant layers are respectively set on the surfaces of the inner and outer waterproof layers.

2. The multi-band laser protective lens according to claim 1, characterized in that: The base layer is made of PC or PA material.

3. The multi-band laser protective lens according to claim 1, characterized in that: The thickness of the base layer is 1.5-2.8 mm.

4. The multi-band laser protective lens according to claim 1, characterized in that: The thicknesses of the blue light absorption layer, the blue-violet light absorption layer, and the green light absorption layer are 5-10 μm, respectively.

5. The multi-band laser protective lens according to claim 1, characterized in that: The thickness of the reinforcement layer is 3-8 μm.

6. The multi-band laser protective lens according to claim 1, characterized in that: The thickness of the waterproof layer is 8-15 nm.

7. The multi-band laser protective lens according to claim 1, characterized in that: The thickness of the oil-resistant layer is 8-15 nm.

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