Method for preparing a base sheet for light radiation protection glasses with high visible light transmittance and base sheet

Abstract

The application discloses a method for preparing a high-visual-light-transmittance light radiation protection spectacle substrate and the substrate. First, rare earth materials are mixed, and the mixed rare earth materials are granulated by using a high-pressure forming machine; the mixed rare earth particle materials are sintered at high temperature in a high-temperature sintering furnace; the sintered blue light absorption film material is vacuum-sealed and stored for standby; a spectacle substrate made of resin or glass is selected, and then the spectacle substrate is ultrasonically cleaned; the cleaned spectacle substrate is placed in a vacuum chamber for vacuum evaporation plating, and plating operations of a blue light absorption film layer, a second hardening film layer and a second waterproof film layer are completed; the spectacle substrate is turned over and placed in the vacuum chamber again for convex surface plating operation; a reflection-reducing and transmittance-increasing film layer, a first hardening film layer and a first waterproof film layer are plated in sequence. The application has more than 50% absorption and interception effect on blue light with a wavelength of 450 nm under the premise of ensuring normal light transmittance, and can effectively protect eyes.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of medical supplies, in particular to a light radiation protection glasses with high visible light transmittance. BACKGROUND

[0002] With the development of science and technology, people have entered the information age, and there are all kinds of portable electronic information products such as smart phones, tablets, computers and the like in life. However, while people enjoy the convenience brought by the information age, they also suffer from the harm of display screens. Because the light emitted by the LED screen display is composed of blue, green and yellow, the blue light wavelength range is 380-480 nm. When the screen resolution and color of the screen image are increased, the contrast and saturation of the screen display are increased in this process, that is, the proportion of high-energy short-wave blue light wavelength is strengthened. Studies have shown that the blue light with a wavelength of 380-480 nm, as the wavelength becomes shorter, the photon energy increases, and the degree of damage to the retina increases rapidly. The damage of blue light to the retina is the most serious, and the high-energy irregular blue light with a wavelength of 420-460 nm is particularly harmful to the retina, especially the blue light at a wavelength of 450 nm, which can penetrate the lens and reach the retina, produce free radicals in the retina, cause the RPE to decline, and thus lack nutrients in the light-sensitive area, causing the death of light-sensitive cells, macular lesions, and eye lesions, vision loss, and temporary blindness.

[0003] Based on the harm of high-energy harmful short-wave blue light to the human body, the market has gradually paid attention to anti-blue light products. The product scheme is mainly a physical software filtering blue light film. This product has serious advantages and disadvantages. The eye protection effect of this product is indeed significant, but the color cast is serious and the transmission of other visible light is also low. Therefore, in view of the low transmittance, serious color cast and non-targeted protection of the existing products, the present application provides a technology for realizing high visible light transmittance and effectively filtering out the most harmful short-wave blue light for different needs. The anti-blue light film prepared by this technology has good anti-blue light effect and high transmittance. SUMMARY

[0004] The technical problem to be solved by the present application is how to effectively filter out short-wave blue light, provide a light radiation protection glasses substrate preparation method with high visible light transmittance, and provide a glasses substrate prepared by the method.

[0005] To achieve the above purpose, the present application is realized by the following technical scheme:

[0006] The light radiation protection glasses substrate preparation method with high visible light transmittance comprises the following steps:

[0007] (1) Firstly, the rare earth materials are mixed, and the mixed rare earth materials are granulated by using a high-pressure forming machine to obtain rare earth granular materials with a particle size range of 2-3 mm;

[0008] (2) The mixed rare earth granular materials are sintered at high temperature in a high-temperature sintering furnace to obtain a blue light absorption film material;

[0009] (3) The sintered blue light absorption film material is vacuum sealed for standby;

[0010] (4) Selecting a spectacle base sheet made of resin or glass, the spectacle base sheet is then ultrasonically cleaned;

[0011] (5) The cleaned spectacle base sheet is placed in a vacuum chamber for vacuum evaporation plating. First, the blue light absorption film layer plating operation is completed, then the second hardening film layer is automatically switched and completed under vacuum, and finally the second waterproof film layer plating operation is completed;

[0012] (6) Turn over the spectacle base sheet with the convex surface facing down, and place it in the vacuum chamber again for convex surface coating operation; sequentially coat the antireflection and antifouling film layer, the first hardening film layer and the first waterproof film layer.

[0013] In step (1), the rare earth materials include the following raw materials: zinc oxide 18-22 parts by weight, vanadium pentoxide 170-200 parts by weight, erbium oxide 93-98 parts by weight, silicon dioxide 58-63 parts by weight, and lanthanum oxide 80-83 parts by weight.

[0014] The rare earth materials include the following raw materials: zinc oxide 20.35 parts by weight, vanadium pentoxide 181.88 parts by weight, erbium oxide 95.63 parts by weight, silicon dioxide 60.08 parts by weight, and lanthanum oxide 81.45 parts by weight.

[0015] In step (2), the mixed rare earth granular materials are sintered at 1200°C for 3 hours in a high-temperature sintering furnace.

[0016] In step (5), the film thickness of the blue light absorption film layer is 100-135 nm, and the film thickness of the second hardening film layer is 35 nm; in step (6), the film thickness of the antireflection and antifouling film layer is 120-145 nm, and the film thickness of the first hardening film layer is 35 nm.

[0017] In step (4), the spectacle base sheet is made of resin or glass, and the thickness of the spectacle base sheet is 1-6 mm.

[0018] The light radiation protective glasses substrate with high visible light transmittance prepared by the preparation method comprises a glasses substrate, a first waterproof film layer, a first hardening film layer and a reflection-reducing and anti-reflection film layer are sequentially arranged from bottom to top on the convex surface of the glasses substrate; a blue light absorbing film layer, a second hardening film layer and a second waterproof film layer are sequentially arranged from top to bottom on the concave surface of the glasses substrate; wherein the blue light absorbing film layer is prepared from the following raw materials: zinc oxide 18-22 parts by weight, vanadium pentoxide 170-200 parts by weight, erbium oxide 93-98 parts by weight, silicon dioxide 58-63 parts by weight and lanthanum oxide 80-83 parts by weight.

[0019] Compared with the prior art, the present application has the following beneficial effects: the present application uses nanocomposite technology to prepare a new type of blue light protection composite film material, and the new type of blue light protection material and auxiliary material are deposited on the surface of the glass cover plate through a vacuum electron beam coating process, which has more than 50% absorption and interception effect on blue light with a wavelength of 450nm under the premise of ensuring normal light transmittance, and can effectively protect the eyes. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The figure is a structural schematic diagram of the present application. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0022] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0023] A preparation method of a light radiation protective glasses substrate with high visible light transmittance comprises the following steps:

[0024] (1) First, the rare earth materials are mixed according to different proportions, and the mixed rare earth materials are granulated by using a high-pressure forming machine to obtain rare earth granular materials with a particle size range of 2-3 mm. In step (1), the rare earth materials include the following raw materials: zinc oxide 18-22 parts by weight, vanadium pentoxide 170-200 parts by weight, erbium oxide 93-98 parts by weight, silicon dioxide 58-63 parts by weight, and lanthanum oxide 80-83 parts by weight.

[0025] More preferably, the rare earth materials include the following raw materials: zinc oxide 20.35 parts by weight, vanadium pentoxide 181.88 parts by weight, erbium oxide 95.63 parts by weight, silicon dioxide 60.08 parts by weight, and lanthanum oxide 81.45 parts by weight.

[0026] (2) The mixed rare earth granular materials are sintered at high temperature in a high-temperature sintering furnace to further improve the density of the rare earth granular materials.

[0027] (3) The sintered material is the blue light absorption film material, and the sintered blue light absorption film material is vacuum sealed for storage.

[0028] (4) Select an eyeglass substrate made of resin or glass, with a thickness of 1-6 mm (different lens thicknesses, the thinnest sunglasses are about 1 mm, plain lenses are about 2 mm, and nearsighted lenses are not uniform in thickness, with a thin center and a thick edge. The higher the nearsightedness, the thicker the edge), and then place the eyeglass substrate on a special fixture for ultrasonic cleaning. It should be noted that during the cleaning process, the concave surface of the eyeglass substrate faces downward; and the above-mentioned special fixture is prior art.

[0029] (5) Place the cleaned eyeglass substrate in a vacuum chamber for vacuum evaporation plating. The plating chamber contains blue light absorption film material, hardening film material, and waterproof film material. According to the preset program, first complete the blue light absorption film layer plating operation, then automatically switch and complete the second hardening film layer plating in a vacuum state, and finally complete the second waterproof film layer plating operation.

[0030] (6) Turn over the eyeglass substrate to have the convex surface facing downward, and place it again in the vacuum chamber for convex surface plating operation. The plating chamber is pre-placed with anti-reflective and anti-fogging film material, hardening film material, and waterproof film material, and the anti-reflective and anti-fogging film layer, the first hardening film layer, and the first waterproof film layer are plated in the specified order.

[0031] It should be noted that the above-mentioned hardening film material, waterproof film material, and anti-reflective and anti-fogging film material are prior art.

[0032] (7) Product inspection and packaging for shipment.

[0033] The working principle of this invention is as follows: In order to achieve high visible light transmittance and high absorption of harmful short-wavelength blue light in the lens substrate, this technology breaks away from the conventional optical interference superposition elimination technology and utilizes military technology to transform it into civilian products. It searches for one or more series of materials with narrow-band blue light absorption characteristics in rare earth elements, and uses nanocomposite technology to prepare a novel blue light absorbing film. The prepared novel blue light absorbing film and auxiliary materials are deposited on the surface of the glass cover plate through a vacuum electron beam coating process. Under the premise of ensuring normal light transmittance, it has an absorption and interception effect of more than 50% of blue light with a wavelength of 450nm, which can effectively protect the eyes.

[0034] Example 1

[0035] (1) First, zinc oxide, vanadium pentoxide, erbium oxide, silicon dioxide, and lanthanum oxide are mixed. The mixed material is then granulated using a high-pressure molding machine to obtain rare earth particles with a particle size range of 2-3 mm. The mixture contains 18 parts by weight of zinc oxide, 170 parts by weight of vanadium pentoxide, 93 parts by weight of erbium oxide, 58 parts by weight of silicon dioxide, and 80 parts by weight of lanthanum oxide.

[0036] (2) The mixed rare earth granular material is sintered in a high-temperature sintering furnace at 1200℃ for 3 hours to further improve the density of the granular material and obtain blue light absorption film material.

[0037] (3) The sintered blue light absorption film is vacuum sealed and stored for later use.

[0038] (4) Select a 2mm resin eyeglass substrate and place it on a special fixture (concave side down) for ultrasonic cleaning.

[0039] (5) Vacuum evaporation electroplating is performed in a vacuum chamber. Blue light absorbing film and waterproof film are placed in the electroplating chamber. The blue light absorbing film is electroplated first according to the preset program, with a film thickness of 100nm. Then, the process is automatically switched and completed under vacuum, with a second hardened film thickness of 35nm. Finally, the second waterproof film is electroplated. In this embodiment 1, silicon carbide is used as the second hardened film.

[0040] (6) Flip the lens substrate so that the convex side is facing down and place it in the vacuum chamber for a second convex coating operation. The anti-reflective coating material, the hardening coating material and the waterproof coating material are placed in advance in the electroplating chamber. The anti-reflective coating layer is deposited in sequence according to the set order. The coating thickness is 120nm. The first hardening coating layer has a thickness of 35nm. Finally, the first waterproof coating layer electroplating operation is completed.

[0041] (7) Product inspection and packaging for shipment.

[0042] The novel anti-blue light medical glasses substrate prepared in the embodiment has a surface reflectance of 5.1%, a surface hardness of 5H, and a 450nm blue light filtering interception rate of 50%. It provides high visual comfort when worn and effectively protects eye health in different scenarios.

[0043] Example 2

[0044] (1) First, zinc oxide, vanadium pentoxide, erbium oxide, silicon dioxide, and lanthanum oxide are mixed. The mixed material is then granulated using a high-pressure molding machine to obtain rare earth granular material with a particle size range of 2-3 mm. Among them, zinc oxide is 22 parts by weight, vanadium pentoxide is 200 parts by weight, erbium oxide is 98 parts by weight, silicon dioxide is 63 parts by weight, and lanthanum oxide is 83 parts by weight.

[0045] (2) The mixed rare earth granular material is sintered in a high-temperature sintering furnace at 1200℃ for 3 hours to further improve the density of the granular material and obtain blue light absorption film material.

[0046] (3) The sintered blue light absorption film is vacuum sealed and stored for later use.

[0047] (4) Select a 2mm resin eyeglass substrate and place it on a special fixture (concave side down) for ultrasonic cleaning.

[0048] (5) Vacuum evaporation electroplating is performed in a vacuum chamber. Blue light absorbing film, hardening film, and waterproof film are placed in the electroplating chamber. The blue light absorbing film is electroplated first according to the preset program, with a film thickness of 120 nm. Then, the process is automatically switched and completed under vacuum, with the second hardening film having a thickness of 35 nm. Finally, the second waterproof film is electroplated. In this embodiment 2, silicon carbide is used as the second hardening film.

[0049] (6) Flip the lens substrate so that the convex side is facing down and place it in the vacuum chamber for a second convex coating operation. The anti-reflective coating material, the hardening coating material and the waterproof coating material are placed in advance in the electroplating chamber. The anti-reflective coating layer with a thickness of 135nm is deposited in sequence according to the set order. The first hardening coating layer has a thickness of 35nm. Finally, the first waterproof coating layer electroplating operation is completed.

[0050] (7) Product inspection and packaging for shipment.

[0051] The novel anti-blue light medical glasses substrate prepared in Example 2 has a surface reflectance of 4.9%, a surface hardness of 5H, and a 450nm blue light filtering interception rate of 54%. It provides high visual comfort when worn and effectively protects eye health in different scenarios.

[0052] Example 3

[0053] (1) First, zinc oxide, vanadium pentoxide, erbium oxide, silicon dioxide, and lanthanum oxide are mixed. The mixed material is then granulated using a high-pressure molding machine to obtain rare earth particles with a particle size range of 2-3 mm. The composition is as follows: zinc oxide 20.35 parts by weight, vanadium pentoxide 181.88 parts by weight, erbium oxide 95.63 parts by weight, silicon dioxide 60.08 parts by weight, and lanthanum oxide 81.45 parts by weight.

[0054] (2) The mixed rare earth granular material is sintered in a high-temperature sintering furnace at 1200℃ for 3 hours to further improve the density of the granular material and obtain blue light absorption film material.

[0055] (3) The sintered blue light absorption film is vacuum sealed and stored for later use.

[0056] (4) Select a 2mm resin eyeglass substrate and place it on a special fixture (concave side down) for ultrasonic cleaning.

[0057] (5) Vacuum evaporation electroplating is performed in a vacuum chamber. Blue light absorbing film, hardening film, and waterproof film are placed in the electroplating chamber. The blue light absorbing film is electroplated first according to the preset program, with a film thickness of 135 nm. Then, the process is automatically switched and completed under vacuum, with the second hardening film having a thickness of 35 nm. Finally, the second waterproof film is electroplated. In this embodiment 3, silicon nitride is used as the second hardening film.

[0058] (6) Flip the lens substrate so that the convex side is facing down and place it in the vacuum chamber for a second convex coating operation. The anti-reflective coating material, the hardening coating material and the waterproof coating material are placed in advance in the electroplating chamber. The anti-reflective coating layer is deposited in sequence according to the set order. The coating thickness is 145nm. The first hardening coating layer has a thickness of 35nm. Finally, the first waterproof coating layer electroplating operation is completed.

[0059] (7) Product inspection and packaging for shipment.

[0060] The novel anti-blue light medical glasses substrate prepared in Example 3 has a surface reflectivity of 4.7%, a surface hardness of 7H, and a 450nm blue light filtering interception rate of 55.5%. It provides high visual comfort when worn and effectively protects eye health in different scenarios.

[0061] Experiment: The performance parameters of the eyeglass substrate before and after coating are compared in Table 1 below.

[0062]

[0063] Table 1.

[0064] Implementation Case 3 is the best embodiment.

[0065] like Figure 1As shown, a light radiation protection eyeglass substrate with high visible light transmittance prepared by the above-described method includes an eyeglass substrate 1. On the convex surface of the eyeglass substrate 1, a first waterproof film layer 2, a first hardening film layer 3, and an anti-reflection and anti-reflection film layer 4 are sequentially disposed from bottom to top. On the concave surface of the eyeglass substrate 1, a blue light absorption film layer 5, a second hardening film layer 6, and a second waterproof film layer 7 are sequentially disposed from top to bottom. The blue light absorption film layer 5 is prepared from the following raw materials: 18-22 parts by weight of zinc oxide, 170-200 parts by weight of vanadium pentoxide, 93-98 parts by weight of erbium oxide, 58-63 parts by weight of silicon dioxide, and 80-83 parts by weight of lanthanum oxide.

[0066] The above description is only a preferred embodiment of the present invention. It should be noted that those skilled in the art can make several changes and improvements without departing from the overall concept of the present invention, and these should also be considered within the scope of protection of the present invention.

Claims

1. A method for preparing a light radiation protective eyewear substrate with high visible light transmittance, characterized in that: Includes the following steps: (1) First, the rare earth materials are mixed, and the mixed rare earth materials are granulated using a high-pressure molding machine to obtain rare earth granules with a particle size range of 2-3 mm; the rare earth materials include the following raw materials: 18-22 parts by weight of zinc oxide, 170-200 parts by weight of vanadium pentoxide, 93-98 parts by weight of erbium oxide, 58-63 parts by weight of silicon dioxide and 80-83 parts by weight of lanthanum oxide; (2) The mixed rare earth granular material is sintered in a high-temperature sintering furnace at high temperature to obtain blue light absorbing film material; (3) The sintered blue light absorption film material is vacuum sealed and stored for later use; (4) Select a lens substrate made of resin or glass, and then perform ultrasonic cleaning on the lens substrate; (5) Place the cleaned eyeglass substrate in a vacuum chamber for vacuum evaporation electroplating. First, complete the electroplating of the blue light absorption film layer. Then, automatically switch and complete the electroplating of the second hardened film layer under vacuum. Finally, complete the electroplating of the second waterproof film layer. (6) Flip the lens substrate so that the convex side faces down and place it in the vacuum chamber for a second convex coating operation; then deposit the anti-reflection and anti-reflection coating layer, the first hardening coating layer and the first waterproof coating layer in sequence.

2. The method for preparing a high visible light transmittance light radiation protective eyewear substrate according to claim 1, characterized in that: Rare earth materials include the following raw materials: 20.35 parts by weight of zinc oxide, 181.88 parts by weight of vanadium pentoxide, 95.63 parts by weight of erbium oxide, 60.08 parts by weight of silicon dioxide, and 81.45 parts by weight of lanthanum oxide.

3. The method for preparing a light radiation protective eyewear substrate with high visible light transmittance according to claim 1, characterized in that: In step (2), the mixed rare earth particles are sintered in a high-temperature sintering furnace at 1200°C for 3 hours.

4. The method for preparing a high visible light transmittance light radiation protective eyewear substrate according to claim 1, characterized in that: In step (5), the thickness of the blue light absorption film is 100-135 nm, and the thickness of the second hardening film is 35 nm; in step (6), the thickness of the antireflection and anti-reflection film is 120-145 nm, and the thickness of the first hardening film is 35 nm.

5. The method for preparing a high visible light transmittance light radiation protective eyewear substrate according to claim 1, characterized in that: In step (4), the lens substrate is made of resin or glass and the thickness of the lens substrate is 1-6mm.

6. A light radiation protection eyeglass substrate with high visible light transmittance prepared by any one of the preparation methods described in claims 1-5, comprising an eyeglass substrate (1), characterized in that: On the convex surface of the eyeglass substrate (1), a first waterproof film layer (2), a first hardening film layer (3) and an anti-reflection and anti-reflection film layer (4) are arranged sequentially from bottom to top; on the concave surface of the eyeglass substrate (1), a blue light absorption film layer (5), a second hardening film layer (6) and a second waterproof film layer (7) are arranged sequentially from top to bottom. The blue light absorption film (5) is prepared from the following raw materials: 18-22 parts by weight of zinc oxide, 170-200 parts by weight of vanadium pentoxide, 93-98 parts by weight of erbium oxide, 58-63 parts by weight of silicon dioxide and 80-83 parts by weight of lanthanum oxide.

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