Gradient-color polarized lens

Abstract

The utility model discloses a gradient polarized lens which comprises a lens base body, the lens base body comprises a first lens layer, a second lens layer and a third lens layer, a first polarizing film is arranged between the first lens layer and the second lens layer, a second polarizing film is arranged between the second lens layer and the third lens layer, and the first polarizing film and the second polarizing film are arranged on the lens base body. The transmittance of the first polarizing film and the second polarizing film is greater than 30%, the center thickness of the first polarizing film is 0.5-0.7 mm, and the center thickness of the second polarizing film is 0.5-0.8 mm; according to the utility model, the structure is simple, the design is reasonable, the overall depth is stepped, the transmittance is from deep to light, the requirements of a user for different color depths when the user looks near or far outdoors can be met, the bonding performance is improved, and the optical performance is not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of resin glasses, in particular to a gradient color polarized lens. Background Art

[0002] In the optical and electronic industries, high-precision bonding technology has always been one of the key technologies for manufacturing high-precision, high-performance products. In particular, in the fields of eyewear manufacturing, optical instruments, display equipment, etc., there is a growing demand for high-precision bonding of glass and resin lenses. This requires not only that the bonded products have high optical performance, but also that they have good flatness and stability.

[0003] Deficiencies of existing technology:

[0004] The polarizing films currently produced on the market are of a single color depth and cannot meet the user's needs for different color depths when looking at near or far objects outdoors. Utility Model Content

[0005] The purpose of the present invention is to provide a gradient polarized lens to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solution: a gradient polarized lens, comprising a lens substrate, wherein the lens substrate comprises a first lens layer, a second lens layer, and a third lens layer, a first polarizing film is arranged between the first lens layer and the second lens layer, a second polarizing film is arranged between the second lens layer and the third lens layer, the transmittance of the first polarizing film and the second polarizing film is greater than 30%, the center thickness of the first polarizing film is 0.5 to 0.7 mm, and the center thickness of the second polarizing film is 0.5 to 0.8 mm.

[0007] Preferably, the first polarizing film is circular, and the diameter of the first polarizing film is 76-80 mm; the second polarizing film is semicircular, and the diameter of the second polarizing film is 75-80 mm.

[0008] Preferably, first axial holes are respectively provided at positions 0° and 180° of the first polarizing film, and the radius of the first axial holes is 2.5 mm.

[0009] Preferably, a second axial hole is provided at the 180° position of the second polarizing film, and the radius of the second axial hole is 2.5 mm; circular holes are provided at the 90° and 270° positions of the second polarizing film, respectively, and the radius of the circular holes is 1.5 mm.

[0010] Preferably, the first lens layer, the second lens layer and the third lens layer are made of a polycarbonate substrate or an acrylic polymer.

[0011] Preferably, the first polarizing film and the second polarizing film have the same curvature; the first polarizing film and the second polarizing film have the same polarization angle.

[0012] Preferably, the first axial hole and the second axial hole have the same angle.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The gradient color polarized lens is provided with a first polarizing film and a second polarizing film. The first polarizing film is provided between the first lens layer and the second lens layer, and the second polarizing film is provided between the second lens layer and the third lens layer. The overall depth is stepped, and the transmittance decreases from deep to shallow. This can meet the user's needs for different color depths when looking near or far outdoors, and improves the bonding performance without affecting the optical performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of a first polarizing film of the present invention;

[0016] Figure 2 This is a schematic diagram of the second polarizing film of the present invention;

[0017] In the figure: 110, first polarizing film; 120, second polarizing film; 111, first axial hole; 121, second axial hole; 122, circular hole. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0020] In the description of this patent, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "disposed" should be understood broadly. For example, they can refer to fixed connection or disposition, detachable connection or disposition, or integrated connection or disposition. Those skilled in the art will understand the specific meanings of the above terms in this patent based on the specific circumstances.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "several" means two or more, unless otherwise specifically defined.

[0022] Example

[0023] See also Figure 1-2 As shown, the utility model provides a technical solution for a gradient color polarized lens: comprising a lens substrate, the lens substrate comprising a first lens layer, a second lens layer and a third lens layer, the first lens layer, the second lens layer and the third lens layer having the same refractive index, the first lens layer, the second lens layer and the third lens layer being made of a polycarbonate substrate or an acrylic polymer, a first polarizing film 110 being disposed between the first lens layer and the second lens layer, a second polarizing film 120 being disposed between the second lens layer and the third lens layer, the transmittance of the first polarizing film 110 and the second polarizing film 120 being greater than 30%, and the center thickness of the first polarizing film 110 being The thickness of the first polarizing film 110 and the second polarizing film 120 is 0.5-0.7mm, the center thickness of the second polarizing film 120 is 0.5-0.8mm, and the overall thickness of the first polarizing film 110 and the second polarizing film 120 is within 1.5mm to ensure that the first polarizing film 110 and the second polarizing film 120 will not be worn through during subsequent processing. The first polarizing film 110 is arranged between the first lens layer and the second lens layer, and the second polarizing film 120 is arranged between the second lens layer and the third lens layer, so that the overall depth is stepped and the transmittance is from deep to shallow, which can meet the user's needs for different color depths when looking near or far outdoors, and improve the bonding performance without affecting the optical performance.

[0024] Furthermore, the first polarizing film 110 and the second polarizing film 120 are formed by laser cutting. The first polarizing film 110 is circular, and the diameter of the first polarizing film 110 is 76-80 mm. First axial holes 111 are respectively provided at the 0° and 180° positions of the first polarizing film 110. The radius of the first axial hole 111 is 2.5 mm to ensure the subsequent casting and the angle calibration of the first polarizing film 110. The second polarizing film 120 is semicircular, and the diameter of the second polarizing film 120 is 75-80 mm. A second axial hole 121 is provided at the 180° position of the polarizing film 120, and the radius of the second axial hole 121 is 2.5 mm to ensure the subsequent casting and the angle calibration of the first polarizing film 110; circular holes 122 are provided at the 90° and 270° positions of the second polarizing film 120, and the radius of the circular hole 122 is 1.5 mm to facilitate the fixing of the first polarizing film 110 and the second polarizing film 120; the curvature of the first polarizing film 110 and the second polarizing film 120 are the same, and the polarization angles of the first polarizing film 110 and the second polarizing film 120 are the same. The angles of the first axial hole 111 and the second axial hole 121 are consistent; during production, the PVA material polarizing film is softened, pressed into 400W by a film press, and then placed in a film warehouse for natural shaping, and the PVA material polarizing film is cut according to size by a film cutting machine; the first polarizing film 110 is placed on the first layer platform of the die sub-circle, and the first axial hole 111 coincides with the sub-circle axis; the second polarizing film 120 is placed on the second layer platform of the die sub-circle, and the circular holes 122 are respectively fixed on the protrusions of the die platform, so that Fix the second polarizing film 120 to prevent it from moving, overlap the first axial hole 111 and the second axial hole 121, buckle the mother ring to prevent the first polarizing film 110 and the second polarizing film 120 from moving; fix the small plastic ring of polymer material in the middle of the two glass molds, and use tape to bond the glass mold and the small plastic ring together to close the mold; cast the closed mold, and after curing, take it out of the oven and open the mold, and then after one and two edge turning, clean and inspect to obtain a gradient polarized resin lens that meets the requirements.

[0025] The working principle of this utility model is as follows:

[0026] When using a gradient polarized lens of this embodiment, a first polarizing film 110 is disposed between the first lens layer and the second lens layer, and a second polarizing film 120 is disposed between the second lens layer and the third lens layer. During production, the PVA polarizing film is softened, pressed into 400W by a film press, and then placed in a film warehouse for natural shaping. The PVA polarizing film is cut to size by a film cutter; the first polarizing film 110 is placed on the first layer platform of the die sub-ring, with the first axis hole 111 coinciding with the sub-ring axis; the second polarizing film 120 is placed on the second layer platform of the die sub-ring, The circular holes 122 are respectively fixed on the protrusions on the molding platform to fix the second polarizing film 120 and prevent the second polarizing film 120 from moving. The first axial hole 111 and the second axial hole 121 are overlapped, and the mother ring is buckled to prevent the first polarizing film 110 and the second polarizing film 120 from moving; a small plastic circle of polymer material is fixed in the middle of two glass molds, and the glass mold and the small plastic circle are bonded together with tape to close the mold; the closed mold is cast, and after curing, it is taken out of the oven and opened, and after one and two edge turning, it is cleaned and inspected to obtain a gradient polarized resin lens that meets the requirements.

[0027] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A gradient polarized lens, comprising a lens substrate, characterized in that: The lens substrate comprises a first lens layer, a second lens layer and a third lens layer, a first polarizing film (110) is arranged between the first lens layer and the second lens layer, a second polarizing film (120) is arranged between the second lens layer and the third lens layer, the transmittance of the first polarizing film (110) and the second polarizing film (120) is greater than 30%, the center thickness of the first polarizing film (110) is 0.5-0.7 mm, and the center thickness of the second polarizing film (120) is 0.5-0.8 mm.

2. The gradient polarized lens according to claim 1, characterized in that: The first polarizing film (110) is circular, and the diameter of the first polarizing film (110) is 76-80 mm; the second polarizing film (120) is semicircular, and the diameter of the second polarizing film (120) is 75-80 mm.

3. The gradient polarized lens according to claim 1, characterized in that: First axial holes (111) are respectively provided at the 0° and 180° positions of the first polarizing film (110), and the radius of the first axial hole (111) is 2.5 mm; A second axial hole (121) is provided at the 180° position of the second polarizing film (120), and the radius of the second axial hole (121) is 2.5 mm; circular holes (122) are provided at the 90° and 270° positions of the second polarizing film (120), respectively, and the radius of the circular holes (122) is 1.5 mm; The first axial hole (111) and the second axial hole (121) have the same angle.

4. The gradient polarized lens according to claim 1, characterized in that: The first lens layer, the second lens layer and the third lens layer are made of a polycarbonate substrate or an acrylic polymer.

5. The gradient polarized lens according to claim 1, characterized in that: The first polarizing film (110) and the second polarizing film (120) have the same curvature; and the first polarizing film (110) and the second polarizing film (120) have the same polarization angle.

Images