A high refractive index anti-reflection blue light blocking lens and its processing technology

Abstract

The invention discloses a high refractive index anti-reflection blue light lens and its processing technology, which comprises: a cured resin substrate, a hardening layer formed on the surface of the resin substrate by a sol-gel process; a low-reflection mixed film layer plated on the surface of the resin substrate, the low-reflection mixed film layer sequentially comprising a zirconium oxide film layer, a silicon dioxide film layer, a titanium oxide film layer, a silicon dioxide film layer, a titanium oxide film layer, an ITO film layer, a silicon dioxide film layer, and an ultra-smooth waterproof film layer from the inside to the outside. The invention performs vacuum coating on both sides of the hardened lens, uses an electron gun and an ion source for co-evaporation, and plates a hybrid anti-reflection film on the surface of the lens, thereby reducing the reflective effect of the lens surface while improving the transmittance, avoiding the virtual image problem, and reducing the ghosting phenomenon of lights at night.

Description

Technical Field

[0001] The present invention belongs to the technical field of resin lenses, and in particular, relates to a high-refractive-index anti-reflection blue-light lens and a processing technology thereof. Background Art

[0002] The existing lens production process is based on the traditional evaporation process. The first layer of the coated lens is less and the fourth layer is more. The outermost layer of the coated lens is generally deposited by evaporation of ordinary water film, which is not smooth enough and not durable enough. Some companies use some super-hardened waterproof drugs for evaporation, which is better in terms of smoothness, but still not durable enough.

[0003] The lenses produced by the above method have a high reflection rate, resulting in low transmittance of the lenses, which can easily cause the lenses to appear white when taking photos, and "ghost images" to appear in the lenses when driving, affecting driving safety; the surface of the lenses produced by this method is relatively rough, and water droplets, dust, and oil stains are more likely to adhere to the surface of the lenses and are not easy to wipe off, causing great trouble to the wearer. In addition, the durability of the lenses themselves is not enough, and scratches will appear after a short wearing time, affecting the wearer's vision. Summary of the invention

[0004] In view of this, the technical problem to be solved by the present invention is to provide a high refractive index anti-reflection blue light blocking lens and its processing technology, so as to avoid the problems of low light transmittance of previous resin lenses and large reflective effect on the lens surface, which easily leads to virtual image problems and ghost shadow phenomenon of night lights.

[0005] In order to solve the above technical problems, the present invention discloses a high refractive index anti-reflection blue light blocking lens, which comprises: After the resin substrate is cured, a hardening layer is formed on the surface of the resin substrate by a sol-gel process; The low-reflection mixed film layer is plated on the surface of the resin substrate, and the low-reflection mixed film layer includes a zirconium oxide film layer, a silicon dioxide film layer, a titanium oxide film layer, a silicon dioxide film layer, a titanium oxide film layer, an ITO film layer, a silicon dioxide film layer, and an ultra-smooth waterproof film layer from the inside to the outside.

[0006] According to one embodiment of the present invention, the hardened layer is a silicone protective layer with a thickness of 2.5±0.5 um.

[0007] According to one embodiment of the present invention, the thickness of the zirconium oxide film layer is 4 to 9 nm, the thickness of the silicon dioxide film layer is 170 to 240 nm, the thickness of the titanium oxide film layer is 17 to 26 nm, the thickness of the silicon dioxide film layer is 27 to 40 nm, the thickness of the titanium oxide film layer is 28 to 45 nm, the thickness of the ITO film layer is 4 to 7 nm, the thickness of the silicon dioxide film layer is 80 to 120 nm, and the thickness of the ultra-smooth waterproof film layer is 12 to 15 nm.

[0008] According to one embodiment of the present invention, the ultra-slip waterproof film layer is configured as a fluorine-containing polymer layer, which is evaporated onto the surface of the resin substrate by an electron gun, and the fluorine reacts with the silicon on the surface of the silicon dioxide film layer to form a bond.

[0009] The present invention also discloses a processing technology for high refractive index anti-reflection blue light blocking lenses, comprising: S1. Place the hardened and cured lens into a specific coating tool; S2. Place the tooling containing the lens in an oven at about 60°C for heat preservation; S3. Put the insulated lens into the coating machine for coating; The S4 coating machine evacuates the vacuum chamber to below 4.0*10-5Torr while heating the vacuum chamber to 45°C. S5. Vacuum plasma cleaning; S6. Electron gun evaporation ion source assisted the 1st to 7th film layers; S7. Electron gun evaporation deposition of the 8th layer of super smooth waterproof film; S8. After the single-side coating is completed, the lens is turned over and process steps 1-7 are repeated; S9. After coating, the lens can be inspected and various performance tests can be performed in the laboratory.

[0010] According to one embodiment of the present invention, in the above step S6, first, in an Ar protective atmosphere, plasma assisted for 45 to 120 seconds, with an argon flow rate of 13 sccm, and then electron gun evaporation, ion source assisted, the coating layer is 7 layers in total, namely zirconium oxide film layer, silicon dioxide film layer, titanium oxide film layer, silicon dioxide film layer, titanium oxide film layer, ITO film layer, silicon dioxide film layer.

[0011] According to one embodiment of the present invention, the auxiliary voltage of the ion source is 140V±5, the current is 2.5A, and the oxygen is 20SCCM.

[0012] Compared with the prior art, the present invention can achieve the following technical effects: By vacuum coating on both sides of the hardened lens, using an electron gun and an ion source for co-evaporation, a hybrid anti-reflection film is coated on the lens surface to increase transmittance while reducing the reflection effect on the lens surface, thus avoiding virtual image problems and reducing ghosting of lights at night.

[0013] The visible light transmittance is less than 0.3%; the average reflectivity in the wavelength range of 400~450nm is less than 2.0%; the average reflectivity in the wavelength range of 500~550nm is less than 0.3%; the average reflectivity in the wavelength range of 550~650nm is less than 0.15%.

[0014] The lenses processed by this process are more resistant to high temperatures than those processed by the prior art.

[0015] Of course, any product implementing the present invention does not necessarily need to achieve all of the above-mentioned technical effects at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 Schematic diagram of a high refractive index anti-reflection blue light blocking lens according to an embodiment of the present invention. Figure ID

[0017] Resin substrate 10 , hardening layer 20 , zirconium oxide film layer 30 , silicon dioxide film layer 40 , titanium oxide film layer 50 , silicon dioxide film layer 60 , titanium oxide film layer 70 , ITO film layer 80 , silicon dioxide film layer 90 , super-smooth waterproof film layer 100 . DETAILED DESCRIPTION

[0018] The following will describe the implementation methods of the present invention in detail with reference to the accompanying drawings and embodiments, so that the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0019] Please refer to Figure 1 , Figure 1 Schematic diagram of a high refractive index anti-reflection blue light blocking lens according to an embodiment of the present invention.

[0020] As shown in the figure, a high refractive index anti-reflection blue light blocking lens includes: a cured resin substrate 10, a hardened layer 20 formed on the surface of the resin substrate 10 by a sol-gel process; a low-reflection mixed film layer plated on the surface of the resin substrate 10, the low-reflection mixed film layer includes a zirconium oxide film layer 30, a silicon dioxide film layer 40, a titanium oxide film layer 50, a silicon dioxide film layer 60, a titanium oxide film layer 70, an ITO film layer 80, a silicon dioxide film layer 90, and an ultra-smooth waterproof film layer 100 from the inside to the outside.

[0021] In one embodiment of the present invention, the surface of the resin substrate 10 is hardened to form a dense hardened layer 20 to increase the surface hardness of the lens and improve its anti-fall and anti-scratch capabilities, and then the coating is performed. Preferably, the hardened layer 20 is an organic silicon protective layer formed by a sol-gel process with a thickness of 2.5±0.5um.

[0022] Furthermore, the coating layer is a low-reflective mixed film layer, and 8 layers of films are stacked in sequence. It is deposited by co-evaporation of an electron gun and an ion source, and has a low-refractive index film layer and a high-refractive index film layer. The low-refractive index film layer is silicon dioxide, and the high-refractive index film layer is zirconium oxide and titanium oxide, and a thinner coating layer with anti-static function. The outermost layer is coated with an ultra-smooth waterproof, anti-fouling and oil-proof film layer.

[0023] The thickness of the first high refractive index film layer is 4-9nm, the thickness of the second low refractive index film layer is 170-240nm, the thickness of the third high refractive index film layer is 17-26nm, the thickness of the fourth low refractive index film layer is 27-40nm, the thickness of the fifth high refractive index film layer is 28-45nm, the thickness of the sixth antistatic film layer is 4-7nm, the thickness of the seventh high refractive index film layer is 80-120nm, and the eighth ultra-smooth waterproof film has a thickness of 12-15nm. Its material is mainly fluorine-containing polymer, which is evaporated onto the surface of the lens through an electron gun. The fluorine reacts with the silicon on the surface to form a bond, and the surface has high hydrophobicity.

[0024] The present invention also discloses a processing technology for high refractive index anti-reflection blue light blocking lenses, comprising: S1. Place the hardened and cured lens into a specific coating tool; S2. Place the tooling containing the lens in an oven at about 60°C for heat preservation; S3. Put the insulated lens into the coating machine for coating; The S4 coating machine evacuates the vacuum chamber to below 4.0*10-5Torr while heating the vacuum chamber to 45°C. S5. Vacuum plasma cleaning; S6. Electron gun evaporation assisted by ion source for the first to seventh film layers, first in Ar protective atmosphere, plasma assisted for 45 to 120 seconds, with an argon flow rate of 13 sccm, and then electron gun evaporation assisted by ion source, with a total of 7 film layers, namely zirconium oxide film layer, silicon dioxide film layer, titanium oxide film layer, silicon dioxide film layer, titanium oxide film layer, ITO film layer, silicon dioxide film layer; S7. Electron gun evaporation deposition of the 8th layer of super smooth waterproof film; S8. After the single-side coating is completed, the lens is turned over and process steps 1-8 are repeated; S9. After coating, the lens can be inspected and various performance tests can be performed in the laboratory.

[0025] The coating adopts vacuum coating technology, and its process is: 1.56, 1.60, 1.67 single hardened lenses are kept at 65℃, and the lenses are moved into the coating machine and vacuumed to below 4.0*10-5Torr, and the vacuum chamber is heated to 45℃. Under Ar protection atmosphere, plasma assisted 45~120s, argon gas flow rate is about 13sccm, and then the electron gun evaporates the ion source to assist the coating layer for a total of 7 layers, and the electron gun evaporates the 8th layer of super smooth waterproof film. The specific process is shown in the table below:

[0026] The measured reflectance spectrum values ​​of the film layer of the resin lens processed by the above process are shown in the following table:

[0027] The film transmission spectrum values ​​are shown in the following table:

[0028] From this we can get: Visible light transmittance is less than 0.3%; the average reflectivity in the wavelength range of 400~450nm is less than 2.0%; the average reflectivity in the wavelength range of 500~550nm is less than 0.3%; the average reflectivity in the wavelength range of 550~650nm is less than 0.15%; In the case of high transmittance, the reflection effect on the lens surface is reduced, which can avoid the problem of virtual images and reduce the ghosting phenomenon of lights at night.

[0029] 3. The lenses produced by this technology are more resistant to high temperatures than those produced by existing technology.

[0030] In addition to the above embodiments, the present invention may also have other embodiments, for example, the substrate may be a 1.499 substrate, a 1.552 substrate, a 1.600 acrylic substrate, a 1.600 MR-8 substrate, a 1.670 MR-7 substrate or a 1.710 substrate in addition to a 1.56 substrate. Any technical solution formed by equivalent replacement or equivalent transformation falls within the protection scope of the present invention.

[0031] The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. Changes and variations made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A high refractive index anti-reflection blue light blocking lens, characterized in that: include: A cured resin substrate, wherein a hardening layer is formed on the surface of the resin substrate by a sol-gel process; A low-reflection mixed film layer is plated on the surface of the resin substrate, and the low-reflection mixed film layer includes, from the inside to the outside, a zirconium oxide film layer, a silicon dioxide film layer, a titanium oxide film layer, a silicon dioxide film layer, a titanium oxide film layer, an ITO film layer, a silicon dioxide film layer, and an ultra-smooth waterproof film layer.

2. The high refractive index anti-reflection blue light blocking lens according to claim 1, characterized in that: The hardening layer is a silicone protective layer with a thickness of 2.5±0.5um.

3. The high refractive index anti-reflection blue light blocking lens according to claim 1, characterized in that: The low-reflection mixed film has a zirconium oxide film layer thickness of 4 to 9 nm from the inside to the outside, a silicon dioxide film layer thickness of 170 to 240 nm, a titanium oxide film layer thickness of 17 to 26 nm, a silicon dioxide film layer thickness of 27 to 40 nm, a titanium oxide film layer thickness of 28 to 45 nm, an ITO film layer thickness of 4 to 7 nm, a silicon dioxide film layer thickness of 80 to 120 nm, and an ultra-smooth waterproof film layer thickness of 12 to 15 nm.

4. The high refractive index anti-reflection blue light blocking lens according to claim 1, characterized in that: The ultra-slippery waterproof film layer is configured as a fluorine-containing polymer layer, which is evaporated onto the surface of the resin substrate by an electron gun, and the fluorine reacts with the silicon on the surface of the silicon dioxide film layer to form a bond.

5. A processing technology for the high refractive index anti-reflection blue light blocking lens as claimed in claim 1, characterized in that: include: S1. Place the hardened and cured lens into a specific coating tool; S2. Place the tooling containing the lens in an oven at 60°C for heat preservation; S3. Put the insulated lens into the coating machine for coating; The S4 coating machine evacuates the vacuum chamber to below 4.0*10-5Torr while heating the vacuum chamber to 45°C. S5. Vacuum plasma cleaning; S6. Electron gun evaporation ion source assists the 1st to 7th film layers; S7. Electron gun evaporation deposition of the 8th layer of super smooth waterproof film; S8. After the single-side coating is completed, the lens is turned over and process steps 1-7 are repeated; S9. After coating, lens post-coating inspection and laboratory performance testing can be carried out.

6. The processing technology of the high refractive index anti-reflection blue light blocking lens according to claim 5, characterized in that: In the step S6, firstly, in an Ar protective atmosphere, plasma assisted for 45 to 120 seconds with an argon flow rate of 13 sccm, and then electron gun evaporation was performed with an ion source assisted, and a total of 7 coating layers were formed, namely, a zirconium oxide film layer, a silicon dioxide film layer, a titanium oxide film layer, a silicon dioxide film layer, a titanium oxide film layer, an ITO film layer, and a silicon dioxide film layer.

7. The processing technology of the high refractive index anti-reflection blue light blocking lens according to claim 6, characterized in that: The auxiliary voltage of the ion source is 140V±5, the current is 2.5A, and the oxygen is 20SCCM.

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