A type of eyeglass lens

Abstract

This invention provides a spectacle lens, belonging to the field of eyewear technology. It solves the problem of how to improve the light filtering effect of spectacle lenses. The spectacle lens includes a base layer, an outer reinforcing layer, and a polarizing layer. The polarizing layer is located between the outer reinforcing layer and the base layer, and is formed on one side of the base layer. The spectacle lens also includes an outer filter layer and an inner filter layer. The outer filter layer is formed between the polarizing layer and the outer reinforcing layer, and the inner filter layer is formed on the other side of the base layer. This spectacle lens can improve the filtering effect of glasses on blue light and ultraviolet light.

Description

Technical Field

[0001] This utility model belongs to the field of eyeglasses technology and relates to an eyeglass lens. Background Technology

[0002] Eyeglass lenses, also known as spectacle lenses, are the most important and most difficult-to-manufacture, and most expensive component of eyeglasses. Unlike lenses for prescription glasses (like those for nearsightedness and farsightedness), sunglasses lenses do not correct vision. Their primary function is to filter and absorb light to ensure eye comfort in bright outdoor conditions. Specifically, existing sunglasses lenses are generally formed by laminating or coating multiple layers of different materials to create a complete lens. These layers absorb and reflect strong light, softening it to reduce eye strain caused by the eye's natural adjustment process or damage from strong light.

[0003] Specifically, existing sunglasses lenses typically consist of multiple layers, including a base layer, a filter layer formed on one side of the base layer, a polarizing layer formed on the filter layer, and a protective layer formed on the polarizing layer. During use, light passes sequentially through the protective layer, polarizing layer, filter layer, and finally through the base layer before reaching the human eye. During this process, the polarizing layer uses the principle of light polarization to eliminate stray reflections and glare. Then, the filter layer filters out blue and ultraviolet light, thus achieving the purpose of protecting the user's eyes.

[0004] However, this type of lens has certain defects. Specifically, after light passes through the polarizing layer, it is actually in a relatively concentrated state when it passes through the filter layer. This results in a large load on the filtering of light in local areas of the filter layer, which leads to insufficient filtering of blue light and ultraviolet light, resulting in poor protection. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a new type of eyeglass lens. The technical problem this invention aims to solve is: how to improve the light filtering effect of eyeglass lenses.

[0006] The objective of this utility model can be achieved through the following technical solution: a spectacle lens, comprising a base layer, an outer reinforcing layer, and a polarizing layer, wherein the polarizing layer is located between the outer reinforcing layer and the base layer, and the polarizing layer is formed on one side of the base layer, characterized in that the spectacle lens further comprises an outer filter layer and an inner filter layer, wherein the outer filter layer is formed between the polarizing layer and the outer reinforcing layer, and the inner filter layer is formed on the other side of the base layer.

[0007] This eyeglass lens comprises a base layer, an outer reinforcing layer, and a polarizing layer. The base layer serves as the foundation, with color films formed on both sides through coating. The polarizing layer is then formed on one side of the base layer, utilizing the principle of polarization to eliminate stray reflections and glare, thereby improving visual clarity and comfort. Secondly, this application forms an outer filter layer on the other side of the polarizing layer, and an inner filter layer on the other side of the base layer. Thus, during light propagation, the outer filter layer initially filters out blue and ultraviolet light. The filtered light then passes sequentially through the polarizing layer and the base layer before... The inner filter layer allows light passing through the substrate to undergo secondary filtering, thus more effectively filtering blue and ultraviolet light and eliminating their influence, ensuring adequate protection for the user's eyes. Secondly, the outer reinforcement layer provides comprehensive protection for the outer filter layer, reducing the impact of oil stains and preventing scratches. Compared to light passing through a polarizing layer first, then the outer filter layer and substrate, this effectively prevents light from passing through the outer filter layer in a concentrated state, ensuring the initial filtering effect of blue and ultraviolet light.

[0008] In the aforementioned spectacle lens, the lens further includes an inner reinforcing layer, which is formed on the side of the inner filter layer facing away from the outer filter layer. Based on the above structure, this application achieves sufficient protection for the inner filter layer by providing an inner reinforcing layer, reducing the impact of oil stains on the inner filter layer while preventing scratches on the inner filter layer.

[0009] In the aforementioned spectacle lens, the lens further includes an anti-reflective layer, which is formed on the side of the inner reinforcing layer opposite to the outer filter layer. By providing the anti-reflective layer, stray light is reduced or eliminated, ensuring clear vision and comfort for the user when wearing the glasses.

[0010] In the aforementioned eyeglass lens, the thickness of the outer filter layer and the inner filter layer is between 2 and 3 micrometers. This ensures that the thickness of the outer and inner filter layers is appropriate, guaranteeing both a reasonable overall thickness of the lens and effective light filtering by the outer and inner filter layers.

[0011] In the aforementioned spectacle lens, the thicknesses of the outer reinforcing layer, the polarizing layer, the base layer, the inner reinforcing layer, and the antireflective layer are between 0.3 micrometers and 0.4 micrometers. This ensures that the thicknesses of the outer reinforcing layer, polarizing layer, base layer, inner reinforcing layer, and antireflective layer are appropriate, ensuring that the overall thickness of the spectacle lens is reasonable while also ensuring that the functions of the outer reinforcing layer, polarizing layer, base layer, inner reinforcing layer, and antireflective layer are not affected.

[0012] Compared with existing technologies, this eyeglass lens has the following advantages: it effectively eliminates blue light and ultraviolet light by using an outer filter layer and an inner filter layer to filter light in a dual manner. Furthermore, the outer filter layer is placed outside the polarizing layer to avoid the presence of the polarizing layer affecting the filtering effect of the outer filter layer. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of an eyeglass lens.

[0014] In the diagram, 1 is the base layer; 2 is the outer reinforcing layer; 3 is the polarizing layer; 4 is the outer filter layer; 5 is the inner filter layer; 6 is the inner reinforcing layer; and 7 is the antireflection layer. Detailed Implementation

[0015] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0016] like Figure 1 As shown, this eyeglass lens includes a base layer 1, an outer reinforcing layer 2, a polarizing layer 3, an outer filter layer 4, an inner filter layer 5, an inner reinforcing layer 6, and an antireflective layer 7. The base layer 1 is specifically made of resin material, and its two surfaces are coated with a color film. A polarizing layer 3 made of PVA material is integrally formed on one side of the base layer 1. Filter layers are formed on both the polarizing layer 3 and the other side of the base layer 1. The outer filter layer 4 is formed on the polarizing layer 3, and the inner filter layer 5 is formed on the other side of the base layer 1. Specifically, the inner filter layer 5 and the outer filter layer 4 are existing technologies, and their specific components and preparation methods can be found in Chinese Patent (Application Publication No.: CN105). (891915A), which will not be elaborated further in this embodiment, this application forms the outer filter layer 4 on the outside of the polarizing layer 3, so that when light passes through, it can first pass through the outer filter layer 4 to preliminarily filter blue light and ultraviolet light, and then pass through the polarizing layer 3 to polarize and eliminate stray reflections and glare of light. This avoids the light passing through the polarizing layer 3 in a relatively concentrated state before passing through the outer filter layer 4, which would result in the outer filter layer 4 having an unsatisfactory preliminary filtering effect. Secondly, after the light passes through the polarizing layer 3 and the base layer 1 in sequence, it can pass through the inner filter layer 5 again to perform secondary filtering of the light, thereby fully eliminating blue light and ultraviolet light in the light and reducing damage to the user's eyes.

[0017] like Figure 1As shown, the outer reinforcing layer 2 is formed on the side of the outer filter layer 4 facing away from the base layer 1, and the inner reinforcing layer 6 is formed on the side of the inner filter layer 5 facing away from the base layer 1. This provides sufficient protection for the outer filter layer 4 and the inner filter layer 5, preventing them from being affected by oil stains. It also prevents the outer filter layer 4 and the inner filter layer 5 from being scratched by foreign objects. Specifically, the outer reinforcing layer 2 and the inner reinforcing layer 6 are generally made of silicon dioxide or organosilicon through immersion polymerization. In addition, an anti-reflection layer 7 is formed on the side of the inner reinforcing layer 6 facing away from the base layer 1. It can generally be made of materials such as acrylic, plastic or quartz. It uses the principle of light wave interference to reduce the intensity of reflected light and increase the intensity of transmitted light, thereby achieving a clearer image and ensuring the user's visual effect and comfort.

[0018] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0019] Although this document frequently uses terms such as base layer 1, outer reinforcing layer 2, polarizing layer 3, outer filter layer 4, inner filter layer 5, inner reinforcing layer 6, and antireflection layer 7, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A spectacle lens, comprising a base layer (1), an outer reinforcing layer (2), and a polarizing layer (3), wherein the polarizing layer (3) is located between the outer reinforcing layer (2) and the base layer (1), and the polarizing layer (3) is formed on one side of the base layer (1), characterized in that, The lens also includes an outer filter layer (4) and an inner filter layer (5). The outer filter layer (4) is formed between the polarizing layer (3) and the outer reinforcing layer (2), and the inner filter layer (5) is formed on the other side of the base layer (1).

2. The ophthalmic lens of claim 1, wherein, The lens also includes an inner reinforcing layer (6), which is formed on the side of the inner filter layer (5) facing away from the outer filter layer (4).

3. The ophthalmic lens of claim 2, wherein, The lens also includes an anti-reflective layer (7), which is formed on the side of the inner reinforcing layer (6) opposite to the outer filter layer (4).

4. The ophthalmic lens of claim 2 or 3, wherein, The thickness of the outer filter layer (4) and the inner filter layer (5) is between 2 micrometers and 3 micrometers.

5. The ophthalmic lens of claim 3, wherein, The thickness of the outer reinforcing layer (2), the polarizing layer (3), the base layer (1), the inner reinforcing layer (6), and the antireflection layer (7) is between 0.3 micrometers and 0.4 micrometers.

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