Lens capable of reducing harm of high-energy visible light

Abstract

The utility model discloses a lens capable of reducing harm of high-energy visible light, which comprises a melanin base material layer mixed with melanin materials, and an AR (anti-reflection) coating layer is attached to the front surface or the back surface of the melanin base material layer; the AR antireflection coating layer is formed by sequentially and alternately stacking trititanium pentoxide layers and silicon dioxide layers, the trititanium pentoxide layers and the silicon dioxide layers are repeated at least twice, in addition, the trititanium pentoxide layer is arranged on the side close to the melanin base material layer, the silicon dioxide layer is arranged on the side away from the melanin base material layer, and the titanium dioxide layer is arranged on the side away from the melanin base material layer. The lens has excellent ultraviolet protection and glare reduction functions, the light transmittance and definition of the lens can be remarkably improved, visual fatigue is reduced, and meanwhile the attractiveness of the lens is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical lenses, in particular to a lens capable of reducing the harm of high-energy visible light. Background Art

[0002] High-energy visible light (HEV) refers to visible light with a wavelength of 380 to 500 nanometers, which highly overlaps with the blue light band and has strong penetrating and high energy characteristics. It is not only widely present in natural light, but also comes in large quantities from daily necessities such as digital electronic products, energy-saving lamps, and LED lamps. Prolonged exposure to these light sources will accelerate the oxidation process of cells in the macular area of the eye, potentially leading to retinal degeneration. In addition, high-energy visible light is easily scattered by particles in the air, producing glare, which not only causes visual fatigue, but also poses a safety hazard in certain environments (such as night driving). More seriously, high-energy visible light can also interfere with the normal secretion of melatonin, disrupt the body's circadian rhythm, affect sleep quality, and thus threaten overall health.

[0003] The human body has a defense mechanism against high-energy visible light, with melanin in the eyes playing a key role. Acting as a natural sunshade, it effectively blocks glare, protects the macula from light damage, and maintains normal melatonin secretion, promoting a regular circadian rhythm. However, with aging, melanin production decreases, and the eye's defenses gradually weaken, making the harmful effects of high-energy visible light more pronounced.

[0004] Although existing lenses on the market provide basic protection to a certain extent, they are limited in their effectiveness in dealing with high-energy visible light, ultraviolet rays and glare, and often sacrifice the transmittance and clarity of the lenses, making wearers prone to visual fatigue. Utility Model Content

[0005] The purpose of the utility model is to provide a lens that reduces the hazards of high-energy visible light, has excellent ultraviolet protection and glare reduction functions, and can significantly improve the transmittance and clarity of the lens, reduce visual fatigue, and increase the aesthetics of the lens.

[0006] To achieve the above-mentioned objectives, the present invention provides a solution: a lens for reducing the hazards of high-energy visible light, comprising a melanin substrate layer mixed with a melanin material, an AR anti-reflective coating layer attached to the front or back surface of the melanin substrate layer;

[0007] The AR anti-reflection coating layer is formed by sequentially and alternately stacking titanium pentoxide layers and silicon dioxide layers, and the titanium pentoxide layers and silicon dioxide layers are repeated at least twice. In addition, the side close to the melanin substrate layer is the titanium pentoxide layer, and the side away from the melanin substrate layer is the silicon dioxide layer.

[0008] Furthermore, in the AR anti-reflection coating layer, the thickness of the titanium pentoxide layer ranges from 50 nm to 180 nm, and the thickness of the silicon dioxide layer ranges from 160 nm to 700 nm.

[0009] Furthermore, in the AR anti-reflection coating layer, the titanium pentoxide layer and the silicon dioxide layer are repeatedly stacked four times.

[0010] Furthermore, the AR anti-reflection coating layer consists of a 90nm titanium pentoxide layer, a 305nm silicon dioxide layer, a 70nm titanium pentoxide layer, a 200nm silicon dioxide layer, a 50nm titanium pentoxide layer, a 160nm silicon dioxide layer, a 180nm titanium pentoxide layer and a 700nm silicon dioxide layer.

[0011] Furthermore, the thickness of the melanin substrate layer ranges from 1 to 10 mm.

[0012] Furthermore, the melanin substrate layer is made of PC, nylon or TAC.

[0013] Furthermore, the melanin base material layer is a melanin base material layer mixed with melanin, organic pigment, ultraviolet absorber and benzophenone.

[0014] Furthermore, the melanin substrate layer is a myopia lens, a presbyopia lens or a sun lens.

[0015] After adopting the above solution, the beneficial effects of the utility model are:

[0016] This new lens utilizes a melanin-based layer with a melanin-based material to effectively absorb and block high-energy visible light, particularly blue light. This significantly reduces the risk of oxidative damage to cells in the macular region, protecting retinal health. The melanin-based layer's UV-absorbing properties, combined with the AR coating, further enhance the lens's UV protection, providing comprehensive protection against UV damage.

[0017] The AR anti-reflective coating layer is composed of alternating titanium pentoxide layers and silicon dioxide layers. It can significantly reduce the reflected light on the lens surface, effectively reduce glare, improve visual comfort, and significantly improve light transmittance and clarity, ensuring that the wearer has a clear and natural visual experience and reducing visual fatigue.

[0018] In summary, the lens of the present invention not only has excellent ultraviolet protection and glare reduction functions, but also can significantly improve the light transmittance and clarity of the lens, reduce visual fatigue, and increase the aesthetics of the lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1This is a schematic diagram of the layered structure of the lens of the utility model;

[0020] Figure 2 This is a schematic diagram of the layered structure of a lens in Example 1 of the present utility model;

[0021] Figure 3 This is a schematic diagram of the layered structure of the lens in Example 2 of the present utility model.

[0022] Description of labels:

[0023] 1. Melanin substrate layer; 2. AR anti-reflection coating layer; a1, a2, a3, a4, titanium pentoxide layer; b1, b2, b3, b4, silicon dioxide layer. DETAILED DESCRIPTION

[0024] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] The utility model provides a lens that reduces the harm of high-energy visible light, such as Figure 1 As shown, the lens has a layered structure, including a melanin substrate layer 1 and an AR anti-reflection coating layer 2.

[0026] Example 1:

[0027] Melanin substrate layer 1 is formed by adding melanin and other raw materials to the lens substrate material and then injection molding. Melanin substrate layer 1, the core component of the lens, is made of PC, nylon, or TAC. The thickness of melanin substrate layer 1 is controlled to be between 1-10 mm.

[0028] The preparation method of the melanin substrate layer 1 is as follows:

[0029] Raw materials are calculated by weight, and 0.585g melanin, 0.035g brown-red K3580 organic pigment, 0.617g brown-yellow K2270 organic pigment, 130g UV powder (ultraviolet absorber) and 100g benzophenone (C 13 H 10 O). The above raw materials are mixed and stirred for 45 minutes, then added to a granulator for granulation. After granulation, the mixture is placed in a dehumidifying dryer and dried at 125°C for 4 hours. The mixture is then added to an injection molding machine, melted at 280°C, and injected into a lens mold for molding. Finally, the mixture is washed, hardened, and dried. It should be noted that this method can be used to produce lenses for myopia, presbyopia, and sun melanin.

[0030] Lenses containing melanin do not simply block all high-energy visible light, but rather absorb a certain percentage of the light frequency. Therefore, wearing such lenses will not cause serious color distortion, will not appear yellowing, and can better restore the true color.

[0031] The AR anti-reflective coating layer 2 is attached to the front or back surface of the melanin substrate layer 1. The AR anti-reflective coating layer 2 is composed of a sequential, alternating stack of titanium pentoxide and silicon dioxide layers, repeated at least twice. The thickness of the titanium pentoxide layer ranges from 50 nm to 180 nm, and the thickness of the silicon dioxide layer ranges from 160 nm to 700 nm. Furthermore, the titanium pentoxide layer is located on the side closest to the melanin substrate layer 1, while the silicon dioxide layer is located on the side further away from the melanin substrate layer.

[0032] In this embodiment, the back of the black pigment substrate layer 1 is attached with the above-mentioned AR anti-reflection coating layer 2, such as Figure 2 As shown, the titanium pentoxide layer and the silicon dioxide layer are repeatedly stacked four times, and the preparation method is as follows:

[0033] Vacuum to 5.0*10 -5 After 100 Torr, fill with argon and strike the back of the substrate with an ion gun for 160 seconds, then evacuate to 3.0*10 -5 Torr, AR anti-reflection coating is performed according to the following conditions and order:

[0034] ① Oxygen filling 53 sccm, using 300A current to plate a 90nm titanium pentoxide layer a1;

[0035] ② Use 110A current to plate a 305nm silicon dioxide layer b1.

[0036] ③ Fill with oxygen at 53 sccm and deposit a 70 nm titanium pentoxide layer a2 using a 300 A current;

[0037] ④ Use 110A current to plate a 200nm silicon dioxide layer b2.

[0038] ⑤ Fill with oxygen 53 sccm and plate a 50nm titanium pentoxide layer a3 with a current of 300A;

[0039] ⑥ Use 110A current to plate a 160nm silicon dioxide layer b3.

[0040] ⑦ Fill with oxygen at 53 sccm and deposit a 180nm titanium pentoxide layer a4 using a 300A current;

[0041] ⑧ Use 110A current to plate a 700nm silicon dioxide layer b4.

[0042] The AR coating layer 2 reduces reflections and improves the lens' transmittance. The AR coating works by the principle of light interference. Once applied, incident light reflects off both the lens and the coating. If the two beams have the same wavelength, a specific optical path difference, and a specific relationship between wavelength and coating thickness, interference occurs, reducing the reflection. Because this lens utilizes multiple coating layers of varying thickness, reflected light across multiple wavelengths can be reduced, significantly reducing the lens' reflectivity while significantly improving transmittance.

[0043] Example 2:

[0044] In this embodiment, the AR anti-reflection coating layer 2 is attached to the front surface of the black pigment substrate layer 1. Figure 3 As shown, the preparation method is the same as that of Example 1.

[0045] To further illustrate various embodiments, the present invention is provided with accompanying drawings. These drawings form part of the disclosure of this invention and are primarily used to illustrate the embodiments and, in conjunction with the relevant descriptions in the specification, to explain the operating principles of the embodiments. By referring to these drawings, those skilled in the art will be able to understand other possible implementations and the advantages of this invention. Furthermore, directions such as up, down, front, back, left, and right mentioned in this embodiment are for reference only and do not represent actual directions in use.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the design of this case. Any equivalent changes made based on the key design of this case shall fall within the scope of protection of this case.

Claims

1. A lens for reducing the hazards of high-energy visible light, characterized by: It includes a melanin base material layer mixed with a melanin material, and an AR anti-reflection coating layer is attached to the front or back side of the melanin base material layer; The AR anti-reflection coating layer is formed by sequentially and alternately stacking titanium pentoxide layers and silicon dioxide layers, and the titanium pentoxide layers and silicon dioxide layers are repeated at least twice. In addition, the side close to the melanin substrate layer is the titanium pentoxide layer, and the side away from the melanin substrate layer is the silicon dioxide layer.

2. The lens for reducing the hazards of high-energy visible light according to claim 1, wherein: In the AR anti-reflection coating layer, the thickness of the titanium pentoxide layer ranges from 50 nm to 180 nm, and the thickness of the silicon dioxide layer ranges from 160 nm to 700 nm.

3. The lens for reducing the hazards of high-energy visible light according to claim 1, wherein: In the AR anti-reflection coating layer, titanium pentoxide layers and silicon dioxide layers are repeatedly stacked four times.

4. The lens for reducing the hazards of high-energy visible light according to claim 3, wherein: The AR anti-reflection coating layer comprises a 90nm titanium pentoxide layer, a 305nm silicon dioxide layer, a 70nm titanium pentoxide layer, a 200nm silicon dioxide layer, a 50nm titanium pentoxide layer, a 160nm silicon dioxide layer, a 180nm titanium pentoxide layer and a 700nm silicon dioxide layer.

5. The lens for reducing the hazards of high-energy visible light according to claim 1, wherein: The thickness of the melanin substrate layer ranges from 1 to 10 mm.

6. The lens for reducing the hazards of high-energy visible light according to claim 1, wherein: The melanin substrate layer is made of PC, nylon or TAC.

7. The lens for reducing the hazards of high-energy visible light according to claim 1, wherein: The melanin substrate layer is a myopia lens, a presbyopia lens or a sun lens.

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