Processing method of ultrathin customized lens

Abstract

The invention relates to the technical field of resin lens manufacturing, in particular to a processing method of an ultrathin customized lens, which comprises the following steps of: preparing a lining according to a surface opposite to a processing surface of a semi-finished product module; adhering a layer of double-sided tape on the opposite surface of the processing surface of the semi-finished product module, and adhering the lining to the semi-finished product module through the double-sided tape; fixing one side, far away from the semi-finished product module, of the gasket on an external clamp; and soaking the obtained ultrathin customized lens and the gasket in an organic solvent, and separating the ultrathin customized lens from the gasket. The gasket is adhered to one side of the semi-finished product module and then adhered to the clamp, so that the influence of low-temperature alloy deformation on the semi-finished product module is isolated, the gasket and the semi-finished product module are connected through the double-sided adhesive tape, the gasket and the semi-finished product module are dissolved and separated through the organic solvent after processing is completed, and the ultrathin customized lens cannot be influenced; and the processing precision of the lens is improved, and the method is wide in applicability.

Description

Technical Field

[0001] The invention relates to the technical field of resin lens manufacturing, and in particular to a method for processing an ultra-thin customized lens. Background Art

[0002] As glasses have more and more functions, especially the emergence of special function lenses such as AR, we are required to ensure the lightness and thinness of the lenses while maintaining the stability of the brightness, surface shape and deformation of the entire lens when processing them.

[0003] In the traditional processing process, the semi-finished module and the processing fixture are bonded and fixed with low-temperature alloys. However, after the ultra-thin customized lenses are processed, the thickness becomes thinner, especially the lenses with a center thickness of less than 1.0 mm. The deformation caused by the solidification of the low-temperature alloy will cause the surface shape of the lens to change, thereby affecting the lens's brightness and surface shape, and changing the original curvature radius of the lens surface. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a method for processing ultra-thin customized lenses, which can effectively solve the problem in the prior art that the low-temperature alloy directly contacts the lens and deforms, affecting the processing accuracy.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] The present invention provides a method for processing an ultra-thin customized lens, comprising the following steps:

[0007] S1: Prepare semi-finished modules;

[0008] S2: A lining is made according to the opposite side of the processed surface of the semi-finished module;

[0009] S3: Adhere a layer of double-sided tape on the opposite side of the processed surface of the semi-finished module, and the lining sheet is adhered to the semi-finished module by the double-sided tape;

[0010] S4: fixing the side of the lining away from the semi-finished module on an external fixture, and processing the processing surface of the semi-finished module to obtain an ultra-thin customized lens;

[0011] S5: The obtained ultra-thin customized lens and lining are immersed in an organic solvent, the double-sided tape is dissolved in the organic solution, and the ultra-thin customized lens is separated from the lining.

[0012] Furthermore, the ultra-thin customized lens is a crescent-shaped concave lens or a plano-concave lens.

[0013] Furthermore, the opposite surface of the processed surface of the semi-finished module is a convex surface or a flat surface.

[0014] Furthermore, the opposite surface of the processed surface of the semi-finished module is a convex surface, and the curvature radius of the convex surface is greater than 100 mm.

[0015] Furthermore, the curvature of the surface opposite to the processing surface of the semi-finished module is the same in magnitude but opposite in direction, and the lining and the external fixture are bonded and fixed by low-temperature alloy.

[0016] Furthermore, the double-sided tape is circular or oval, and the size of the double-sided tape is larger than the adhesive surface of the lining.

[0017] Furthermore, a side of the lining away from the semi-finished module is a flat surface or a convex surface, and the lining is made of resin or glass.

[0018] Furthermore, the convex surface of one side of the lining away from the semi-finished module has a curvature ranging from 1.0D to 3.0D.

[0019] Furthermore, the lining is made of resin and has a center thickness between 1.5 mm and 3.0 mm.

[0020] Furthermore, the lining is made of glass, and the center thickness is between 1.0 mm and 3.0 mm.

[0021] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects:

[0022] A lining is adhered to one side of the semi-finished module and then adhered to the fixture to isolate the semi-finished module from the deformation of the low-temperature alloy. Double-sided tape is used to connect the lining and the semi-finished module. After processing, they are dissolved and separated by organic solvents, which will not affect the ultra-thin customized lenses, thereby improving the processing accuracy of the lenses. This method has wide applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 This is a state diagram when the semi-finished module and the lining are adhered together;

[0025] Figure 2 This is a diagram showing the adhesion state of low-temperature alloy when the thickness of the semi-finished module is small;

[0026] Figure 3This is the state diagram of low-temperature alloy adhesion when the thickness of the semi-finished module is large;

[0027] Figure 4 The present invention is a flow chart of the method.

[0028] The numbers in the figure represent: 1. semi-finished module; 2. lining; 3. double-sided tape; 4. low-temperature alloy. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 creative work are within the scope of protection of the present invention.

[0030] The present invention will be further described below in conjunction with the embodiments.

[0031] Example: Reference Figure 1-Figure 4 , a method for processing ultra-thin customized lenses, comprising the following steps:

[0032] S1: prepare semi-finished module 1;

[0033] S2: Producing a lining 2 according to the opposite surface of the processed surface of the semi-finished module 1;

[0034] S3: Adhere a layer of double-sided tape 3 on the opposite side of the processed surface of the semi-finished module 1, and the lining 2 is adhered to the semi-finished module 1 through the double-sided tape 3;

[0035] S4: Fixing the side of the lining sheet 2 away from the semi-finished module 1 on an external fixture, and processing the processing surface of the semi-finished module 1 to obtain an ultra-thin customized lens;

[0036] S5: The obtained ultra-thin customized lens and the lining sheet 2 are immersed in an organic solvent, the double-sided tape 3 is dissolved in the organic solvent, and the ultra-thin customized lens is separated from the lining sheet 2.

[0037] The ultra-thin customized crescent-shaped concave lens or plano-concave lens, the opposite surface of the processed surface of the semi-finished module 1 is a convex surface or a plane surface, when the opposite surface of the processed surface of the semi-finished module 1 is a convex surface, and the curvature radius of the convex surface is greater than 100mm.

[0038] The curvature of the opposite surface of the lining 2 and the processed surface of the semi-finished module 1 is the same in magnitude but opposite in direction, and the lining 2 and the external fixture are bonded and fixed by a low-temperature alloy 4 .

[0039] The double-sided tape 3 is circular or oval in shape, and the size of the double-sided tape 3 is larger than the adhesive surface of the lining 2 .

[0040] The side of the lining 2 away from the semi-finished module 1 is flat or convex. The lining 2 is made of resin or glass. The side of the lining 2 away from the semi-finished module 1 is convex, and its curvature range is 1.0D-3.0D. When the lining 2 is made of resin, its center thickness is between 1.5mm and 3.0mm. When the lining 2 is made of glass, its center thickness is between 1.0mm and 3.0mm.

[0041] The surface opposite to the processed surface of the semi-finished module 1 is hereinafter referred to as the full surface;

[0042] Comparative Example 1: Ultra-thin customized lenses are processed using a semi-finished module with a refractive index of 1.60, a front surface curvature of 2.0D, and a diameter of 75mm. The processed lens has a diopter of -1.5D, a center thickness of 0.8mm, and a diameter of 70mm. The front surface of the ultra-thin lens is adhered to a 2.0mm thick resin lining 2 using double-sided tape. The diameter of the lining 2 is also 70mm, and its concave surface is completely equal to the radius of curvature of the front surface of the semi-finished module. The lining 2 with a protective film is fixed to the fixture using a low-temperature alloy. The alloy diameter is 63mm, and the alloy range is exposed on the periphery of the resin lining 2. After the processing is completed, the combined lens is immersed in an organic solvent to separate the lens and the lining 2 lens.

[0043] Comparative Example 2: Ultra-thin custom lenses are processed using a semi-finished module with a refractive index of 1.50, a front surface curvature of 0D, and a diameter of 75mm. The processed lens has a diopter of -1.0D, a center thickness of 0.8mm, and a diameter of 65mm. The front surface of the ultra-thin lens is adhered to a 1.0mm thick glass liner 2 using double-sided tape. The diameter of the liner 2 is 55mm, and its concave surface is completely equal to the radius of curvature of the front surface of the semi-finished module. The liner 2 with a protective film is fixed to the fixture using a low-temperature alloy. The alloy diameter is 63mm. The liner 2 is completely surrounded by the alloy, and the outer periphery of the alloy is in contact with the semi-finished module. After processing, the combined lens is immersed in an organic solvent to separate the lens and the liner 2 lens.

[0044] The above method can be applied to the processing of lenses of any material (according to common sense, lenses are insoluble in organic solutions). It can also be applied to thin lenses with front surfaces of any curvature radius, including lenses with flat front surfaces. The protective effect of the above lining 2 ensures the stability of the lens brightness and surface curvature radius. The double-sided tape can be dissolved in safe and stable organic solvents such as ethanol, and will not cause corrosion and damage to the lens surface.

[0045] like Figure 2 and Figure 3As shown, different bonding methods can be used according to the thickness of the processed ultra-thin customized lens. When the thickness of the processed ultra-thin customized lens is thin, its ability to withstand extrusion is weak, and its recovery ability after extrusion is poor. It is easy to be bent due to its thin thickness. Therefore, it is necessary to ensure that the size of the low-temperature alloy 4 is smaller than the lining 2. Figure 2 As shown, the lining 2 can block the deformation of the low-temperature alloy 4, thereby ensuring that the semi-finished module 1 will not be affected during processing.

[0046] When the thickness of the processed ultra-thin customized lenses is relatively thick, the lenses of myopia glasses are generally thinner in the middle and relatively thicker in the non-center parts. Figure 3 In the situation shown, the portion of the low-temperature metal 4 that extends beyond the lining 2 is at the edge of the semi-finished module 1. The thicker lens has a stronger ability to withstand the deformation of the low-temperature metal 4, and even if it is squeezed, the thicker lens has a stronger recovery ability because the thicker lens is not easily bent.

[0047] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for processing ultra-thin customized lenses, characterized in that: The following steps are involved: S1: Prepare the semi-finished module (1); S2: Producing a lining (2) according to the opposite side of the processed surface of the semi-finished module (1); S3: a layer of double-sided adhesive tape (3) is adhered to the surface opposite to the processed surface of the semi-finished module (1), and the lining sheet (2) is adhered to the semi-finished module (1) by the double-sided adhesive tape (3); S4: fixing the side of the lining sheet (2) away from the semi-finished module (1) on an external fixture, and processing the processing surface of the semi-finished module (1) to obtain an ultra-thin customized lens; S5: The obtained ultra-thin customized lens and the lining sheet (2) are immersed in an organic solvent, the double-sided tape (3) is dissolved in the organic solvent, and the ultra-thin customized lens is separated from the lining sheet (2).

2. The method for processing ultra-thin customized lenses according to claim 1, characterized in that: The ultra-thin customized lens is a crescent-shaped concave lens or a plano-concave lens.

3. The method for processing ultra-thin customized lenses according to claim 1, characterized in that: The opposite surface of the processed surface of the semi-finished module (1) is a convex surface or a flat surface.

4. The method for processing ultra-thin customized lenses according to claim 3, characterized in that: The surface opposite to the processed surface of the semi-finished module (1) is a convex surface, and the curvature radius of the convex surface is greater than 100 mm.

5. The method for processing ultra-thin customized lenses according to claim 1, characterized in that: The curvature of the surfaces opposite to the processed surfaces of the lining (2) and the semi-finished module (1) are the same in magnitude but opposite in direction, and the lining (2) and the external fixture are bonded and fixed by a low-temperature alloy (4).

6. The method for processing ultra-thin customized lenses according to claim 1, characterized in that: The double-sided adhesive tape (3) is circular or elliptical, and the size of the double-sided adhesive tape (3) is larger than the adhesive surface of the lining (2).

7. According to the method for processing ultra-thin customized lenses according to claim 1, the side of the lining (2) away from the semi-finished module (1) is a flat surface or a convex surface, and the lining (2) is made of resin or glass.

8. According to the processing method of ultra-thin customized lenses according to claim 7, the convex surface of the lining (2) away from the semi-finished module (1) has a curvature range of 1.0D-3.0D.

9. According to the method for processing ultra-thin customized lenses as described in claim 7, the lining (2) is made of resin material, and the center thickness is between 1.5 mm and 3.0 mm.

10. According to the method for processing ultra-thin customized lenses according to claim 7, the lining (2) is made of glass and has a center thickness between 1.0 mm and 3.0 mm.

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