High index 1.67 soft film polarized lens

Abstract

The utility model discloses a high fold 1.67 soft film polarizing lens, including lens base piece and composite polarizing film layer, the composite polarizing film layer includes first TAC film layer, first PVA film layer, second TAC film layer, second PVA film layer and third TAC film layer, wherein first PVA film layer and second PVA film layer are polarizing film, and the grating direction of two form a certain angle, the lower of third TAC film layer is equipped with soft epoxy resin layer, and the convex surface of lens base piece is connected through the adhesive layer of soft epoxy resin layer, and the upper layer of first TAC film layer is provided with hard epoxy resin layer. The grating direction included angle of two polarizing film combinations is adjusted to adjust the light transmittance, thereby can prepare the polarizing lens of different light transmittance, and the polarizing film adopts PVA film layer composite TAC film layer, can improve the effect of polarizing and luminosity, and make the structure more stable. Hard epoxy resin layer can effectively improve surface hardness, can resist scratch, and soft epoxy resin can be used as buffer layer, and is used for avoiding collapse, and resisting impact.

Description

Technical Field

[0001] This utility model relates to the field of polarizing lens technology, specifically to a high-refractive-index 1.67 soft film polarizing lens. Background Technology

[0002] Polarized lenses are lenses that allow only light of a specific polarization direction to pass through. Due to their filtering effect, things appear darker when you wear them. They are typically used for outdoor activities such as water sports, skiing, fishing, and driving.

[0003] Polarizing lenses effectively eliminate and filter scattered light from a beam of light, allowing light to enter the eye along the correct transmission axis. The imagery makes the view clear and natural, much like the principle of Venetian blinds, where light is adjusted to enter the room in the same direction, naturally making the scenery look soft and not glaring.

[0004] However, existing polarized lenses still have several shortcomings: 1. The lenses are not wear-resistant and the surface is easily scratched, affecting their use and thus resulting in a short service life; 2. Only a single polarization film is used, so the polarization of the polarization film needs to be adjusted simultaneously when preparing polarized lenses with different transmittances; 3. The function is limited and lacks other additional functions, such as color changing, reducing infrared or ultraviolet transmittance. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a high-refractive-index 1.67 soft film polarizing lens. Technical solution

[0006] A high-refractive-index 1.67 soft-film polarized lens includes a lens substrate and a composite polarizing film layer. The composite polarizing film layer includes a first TAC film layer, a first PVA film layer, a second TAC film layer, a second PVA film layer, and a third TAC film layer. The first PVA film layer and the second PVA film layer are polarizing films, and their grating directions form a certain angle. A soft epoxy resin layer is disposed below the third TAC film layer, and the soft epoxy resin layer is connected to the convex surface of the lens substrate through an adhesive layer. A hard epoxy resin layer is disposed on top of the first TAC film layer.

[0007] Furthermore, the lens substrate is made of PC or TR material.

[0008] Furthermore, the adhesive layer is a polyurethane or acrylate adhesive.

[0009] Furthermore, the pencil softness of the hard epoxy resin layer is 1B to 3B.

[0010] Furthermore, the pencil softness of the soft epoxy resin layer is 2B to 4B.

[0011] Furthermore, the hard epoxy resin layer or the soft epoxy resin layer contains functional additives.

[0012] Preferably, the functional additives include colorants, photochromic agents, and infrared or ultraviolet blocking agents.

[0013] Beneficial effects:

[0014] This invention provides a high-refractive-index 1.67 soft-film polarizing lens. The transmittance is adjusted by changing the angle between the grating directions of the two polarizing film layers, thus allowing the fabrication of polarizing lenses with different transmittances. The polarizing film is a PVA film layer. PVA is brominated with iodide and then directionally stretched to obtain a PVA polarizing film. A TAC film layer is then laminated onto the PVA polarizing film using a casting and bonding method, resulting in a composite film of the TAC and PVA polarizing films. This creates a tighter bond between the TAC and PVA polarizing films. The TAC film layer has excellent properties to prevent the PVA polarizing film from shrinking, improving polarization and light intensity, and making the structure more stable. The hard epoxy resin layer effectively increases surface hardness and resists scratches, while the soft epoxy resin acts as a buffer layer to help prevent cracking and resist impacts. Furthermore, functional additives can be mixed into the hard or soft epoxy resin layers to add other functions. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the polarizing lens of this utility model; Figure 2 This is a schematic diagram of the structure of the composite polarizing film layer of this utility model.

[0016] In the figure, 1 is the lens substrate, 2 is the composite polarizing film layer, 3 is the first TAC film layer, 4 is the first PVA film layer, 5 is the second TAC film layer, 6 is the second PVA film layer, 7 is the third TAC film layer, 8 is the soft epoxy resin layer, 9 is the adhesive layer, and 10 is the hard epoxy resin layer. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings.

[0018] As attached Figure 1 To be continued Figure 2 . Specific implementation examples:

[0020] A high-refractive-index 1.67 soft-film polarized lens includes a lens substrate 1 and a composite polarizing film layer 2. The composite polarizing film layer 2 includes a first TAC film layer 3, a first PVA film layer 4, a second TAC film layer 5, a second PVA film layer 6, and a third TAC film layer 7. The first PVA film layer 4 and the second PVA film layer 6 are polarizing films, and their grating directions form a certain angle. The angle is adjusted according to the required light transmittance. When the two grating directions are at 90°, they are basically opaque. A soft epoxy resin layer 8 is provided below the third TAC film layer 7. The soft epoxy resin layer 8 is connected to the convex surface of the lens substrate 1 through an adhesive layer 9. A hard epoxy resin layer 10 is provided on the upper layer of the first TAC film layer 3.

[0021] This invention adjusts the light transmittance by changing the angle between the grating directions of two polarizing films, thereby enabling the fabrication of polarized lenses with different transmittances. The polarizing film is a PVA film layer, which is obtained by bromination with iodide and directional stretching. A TAC film layer is then laminated onto the PVA polarizing film using a casting and bonding method, resulting in a composite film of the TAC film layer and the PVA polarizing film. This makes the connection between the TAC film layer and the PVA polarizing film tighter. The TAC film layer has good performance in preventing the PVA polarizing film from shrinking, improving the polarization and light intensity, and making the structure more stable.

[0022] Preferably, the lens substrate 1 is made of PC or TR material with high light transmittance (1.67), and can be subjected to general or high-pressure bending forming to achieve the required optical properties. PC and TR materials have good stability, are not easily affected by moisture, have excellent temperature resistance, and good elasticity, which can stably maintain the dimensions and curvature during production, and have excellent optical performance and impact resistance.

[0023] Preferably, the adhesive layer 9 is a polyurethane or acrylate adhesive, which has strong adhesion to the soft epoxy resin layer 8 and the lens substrate 1, resulting in a more secure bond.

[0024] Preferably, the pencil softness of the hard epoxy resin layer 10 is 1B to 3B, which can effectively improve surface hardness and enhance scratch resistance.

[0025] Preferably, the soft epoxy resin layer 8 has a pencil softness of 2B to 4B, serving as a buffer layer to help prevent cracking and resist impact, especially to prevent the TAC film layer from being crushed by impact.

[0026] Preferably, the hard epoxy resin layer 10 or the soft epoxy resin layer 8 contains functional additives. These functional additives include colorants, photochromic agents, and infrared or ultraviolet blocking agents. The addition of functional additives enhances the product's functionality and enriches its overall appeal.

[0027] Although the present invention has been disclosed above with reference to preferred embodiments, these are not intended to limit the present invention. Anyone skilled in the art can make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope of protection of the claims of this application.

Claims

1. A high-refractive-index 1.67 soft-film polarizing lens, characterized in that, The system includes a lens substrate and a composite polarizing film layer. The composite polarizing film layer includes a first TAC film layer, a first PVA film layer, a second TAC film layer, a second PVA film layer, and a third TAC film layer. The first PVA film layer and the second PVA film layer are polarizing films, and their grating directions form a certain angle. A soft epoxy resin layer is provided below the third TAC film layer, and the soft epoxy resin layer is connected to the convex surface of the lens substrate through an adhesive layer. A hard epoxy resin layer is provided on top of the first TAC film layer.

2. The high-refractive-index 1.67 soft-film polarizing lens according to claim 1, characterized in that, The lens substrate is made of PC or TR material.

3. The high-refractive-index 1.67 soft-film polarizing lens according to claim 1, characterized in that, The adhesive layer is a polyurethane or acrylate adhesive.

4. The high-refractive-index 1.67 soft-film polarizing lens according to claim 1, characterized in that, The pencil softness of the hard epoxy resin layer is 1B to 3B.

5. A high-refractive-index 1.67 soft-film polarizing lens according to claim 1 or 4, characterized in that, The pencil softness of the soft epoxy resin layer is 2B to 4B.

6. A high-refractive-index 1.67 soft-film polarizing lens according to claim 1, characterized in that, The hard epoxy resin layer or the soft epoxy resin layer contains functional additives.

7. A high-refractive-index 1.67 soft-film polarizing lens according to claim 6, characterized in that, The functional additives include colorants, photochromic agents, and infrared or ultraviolet blocking agents.

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