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Contact lenses having photonic crystal structural color and manufacturing method thereof

A technology of contact lenses and photonic crystals, applied in glasses/goggles, optics, optical components, etc., can solve the problems of chemical reagents, such as human health hazards, difficulty in mass production, low production efficiency, etc., to beautify eyes, low cost, structure The effect of fewer defects

Inactive Publication Date: 2015-12-02
SHENZHEN INST OF ADVANCED TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the use of colloidal photonic crystals synthesized by chemical methods, defects are easily formed during the self-assembly process of colloidal photonic crystals, and the highly toxic chemical reagent hydrogen fluoride is used in the process of removing the colloidal photonic crystal template to obtain inverse opal contact lenses. In the practical process of this method, there are low production efficiency, difficulty in mass production, and low repetition rate. What's more, the residual chemical reagents bring non-negligible harm to human health.

Method used

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  • Contact lenses having photonic crystal structural color and manufacturing method thereof
  • Contact lenses having photonic crystal structural color and manufacturing method thereof
  • Contact lenses having photonic crystal structural color and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] A preparation method of a contact lens with photonic crystal structural color, comprising the following steps:

[0040] (1) Get a polypropylene material contact lens mould, this mold comprises upper mold and lower mold that can be separated, wherein, upper mold has a convex spherical surface, lower mold has a concave spherical surface, utilizes femtosecond pulse two-photon polymerization method in lower mold A photonic crystal structure layer is prepared on the concave spherical surface of the contact lens mold with a photonic crystal structure, and the photonic crystal structure is periodically arranged micro-nano-scale spherical pits, and the size of the spherical pits is 100nm;

[0041] (2) After mixing PDMS and its curing agent at a ratio of 10:1, take 100 microliters of the above mixed solution and n-hexane at a volume ratio of 1:1 and mix it as a contact lens prepolymer solution for use. Take the above prepolymer solution 100 microliters were added to the contact ...

Embodiment 2

[0047] A preparation method of a contact lens with photonic crystal structural color, comprising the following steps:

[0048] (1) Get a polystyrene material contact lens mould, this mold comprises upper mold and lower mold that can be separated, wherein, upper mold has a convex spherical surface, and lower mold has a concave spherical surface, utilize femtosecond pulse two-photon polymerization method in A photonic crystal structure layer is prepared on the convex spherical surface of the upper mold to obtain a contact lens mold with a photonic crystal structure. The photonic crystal structure is periodically arranged micro-nano-scale spherical protrusions, and the size of the spherical protrusions is 1 μm;

[0049] (2) Add contact lens prepolymer solution (obtained by mixing 50 microliters of methyl methacrylate, 1 microliter of ethylene glycol dimethacrylate, and 1 mg of ultraviolet photoinitiator) into the above-mentioned lens with photonic crystal structure In the contact...

Embodiment 3

[0054] A preparation method of a contact lens with photonic crystal structural color, comprising the following steps:

[0055] (1) Get a polycarbonate material contact lens mould, this mold comprises upper mold and lower mould, wherein, upper mold has a convex spherical surface, and lower mold has a concave spherical surface, utilize femtosecond pulse two-photon polymerization method respectively A photonic crystal structure layer is prepared on the convex spherical surface of the upper mold and the concave spherical surface of the lower mold to obtain a contact lens mold with a photonic crystal structure. The size is 50 μm;

[0056] (2) With contact lens prepolymer solution: in the mixed solution (molar ratio 30:1) of hydroxyethyl methacrylate and methylene bisacrylamide, with Irgacure2959 (mass concentration is 0.2%) as initiator, join in In the above obtained contact lens mold having a photonic crystal structure, a contact lens primary sheet containing a photonic crystal l...

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Abstract

The embodiment of the invention provides a manufacturing method of contact lenses having a photonic crystal structural color. The manufacturing method comprises the steps that (1) a femtosecond-pulse two-photon polymerization method is utilized to make photonic crystal structure layers on contact lens molds to obtain the contact lens molds with photonic crystal structures; (2) a contact lens prepolymer solution is added into the contact lens molds to obtain raw contact lens pieces with photonic crystal layers in a nanoimprint lithography or polymerization curing mode; (3) the raw contact lens pieces with the photonic crystal layers are arranged in saline water to be soaked till the expansion rate is stabilized and constant, and the contact lenses having the photonic crystal structural color are manufactured. According to the manufacturing method, a two-photon technology is introduced to manufacture the contact lens molds with the photonic crystal structures, and the good-safety and high-reliability contact lenses having the structural color can be manufactured by utilizing the molds in a low-cost and high-yield mode. The embodiment of the invention further provides the contact lenses prepared by means of the manufacturing method and having the photonic crystal structural color.

Description

technical field [0001] The invention relates to the field of contact lenses, in particular to a contact lens with photonic crystal structural color and a preparation method thereof. Background technique [0002] With the development of science and technology and the improvement of living standards, people's pursuit of practicality, beauty and safety is becoming more and more intense. However, the market demand for contact lenses has been greatly expanded in the past few decades, crowding out the market of traditional frame glasses, and gradually becoming a kind of Stylish and convenient elements are popular all over the world. [0003] Contact lenses can not only correct vision, but also add some pigments or pigments during the preparation process to prepare colored contact lenses with specific colors or patterns, which can also make eyes look beautiful. However, the contact lenses currently on the market not only have a single color, but also the added pigments or pigments...

Claims

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Application Information

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IPC IPC(8): G02C7/04
CPCG02C7/04G02C7/104
Inventor 杜学敏吴天准
Owner SHENZHEN INST OF ADVANCED TECH
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