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Radiation-proof light-filtering contact lens and production method thereof

A technology of contact lens and production method, which is applied in the direction of glasses/goggles, optics, optical components, etc., which can solve the problems of unsightly appearance, low ultraviolet protection performance, and bulkiness, and achieve good moisture content and good oxygen transmission coefficient. Effect

Active Publication Date: 2013-07-10
北京自然美光学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current contact lenses have been accepted by many people. Wearing contact lenses can achieve light, beautiful and fashionable effects. At the same time, the vision can be corrected without deformation, but they are made of materials that cannot filter ultraviolet light, blue light, and purple light. , the current contact lenses do not have high UV protection performance, let alone control performance of purple light and blue light. Beautiful, at the same time, sunglasses also cover part of the effective visible light, making the vision unclear, which also loses the meaning of wearing contact lenses

Method used

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  • Radiation-proof light-filtering contact lens and production method thereof
  • Radiation-proof light-filtering contact lens and production method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0070] Hydroxyethyl methacrylate: 90 parts;

[0071] n-vinylpyrrolidone: 10 parts;

[0072] Ethylene glycol dimethacrylate: 0.3 parts;

[0073] Azobisisobutyronitrile: 0.15 parts;

[0074] Tetraphenyldimethacrylic acid (English name: 4-[(E)-phenyldiazenyl]phenyl-2-methacrylate): 0.7 parts;

[0075] Quinophthalone Solvent Yellow: 3 parts.

[0076] The method for making a contact lens using the contact lens material of this implementation may include the following steps in turn:

[0077] Step (1) making a half-mold: making a convex mold, the curvature of the inner side of the bottom is the same as that of the contact lens, as a forming mold for the contact lens.

[0078] The half-mold making process includes:

[0079] (1) Drying of raw materials: Put an appropriate amount of PBT granular raw materials into a dryer for drying and then take them out for use;

[0080] (2) Injection molding machine preparation: connect the power supply of the injection molding machine, turn on...

Embodiment 2-5

[0103] Embodiment 2-5 carries out the same operation as embodiment 1 except that the proportioning ratio of components is changed, and the results are shown in Table 1.

[0104] Table 1

[0105]

Embodiment 6-10

[0107] Embodiment 6-10 carries out the same operation with embodiment 1 except that the proportioning ratio of component is changed, and embodiment 6-10 and

[0108] The difference of Examples 1-5 is that quinophthalone solvent yellow is replaced by fluorescent polycyclic solvent yellow, and the results are shown in Table 2.

[0109] Table 2

[0110]

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PUM

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Abstract

A radiation-proof light-filtering contact lens is characterized in that the weight ratio of each component of liquid material is as follows: 90 to 100 parts of hydroxyethyl methacrylate; 10 to 12 parts of ethenyl pyrrolidinone; 0.3 to 0.5 part of 2-propenoic acid, oxybis(2,1-ethanediyloxy-2,1-ethanediyl)ester; acrylic acid, diester with tetraethylene glycol; 0.15 to 0.2 part of 2,2'-dicyano-2,2'-azopropane azobisisbutyronitrile; 0.7 to 1 part of 4-[(E)-phenyldiazenyl]phenyl-2-methacrylate; and 3 parts of yellow pigment and dye for contact lenses. The contact lens has a good oxygen permeation coefficient, high moisture content, moderate hardness and fewer residues, and also has a good ultraviolet radiation protection effect and a good filtering effect on purple light and blue light.

Description

technical field [0001] The invention relates to a contact lens and a manufacturing method thereof. The invention changes the optical properties of the contact lens by adding new substances on the basis of the traditional manufacturing technology of the contact lens. The light filtering performance of the present invention is: filtering out ultraviolet rays, controlling purple light and blue light components with wavelengths below 450NM, and having high transmittance for visible light with wavelengths above 450NM. The optical performance of the present invention enables the contact lens to effectively protect against photochemical damage to eye tissue by light radiation. Background technique [0002] As we all know, ultraviolet rays can not only kill viruses, but also cause greater damage to human skin and eyes, such as photo-induced keratitis and photo-induced cataracts; there are short-wave components such as violet and blue light in visible light that are also harmful to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/28C08L33/14B29D11/00G02C7/04
Inventor 周振宇
Owner 北京自然美光学有限公司
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