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Structural color contact lens based on coffee ring effect and preparation method thereof

A contact lens and coffee ring technology, which is applied in glasses/goggles, applications, and other household appliances, can solve the problems of low reliability and insufficient wearing of glasses, and achieve simple process, low preparation cost, and good practicability Effect

Inactive Publication Date: 2012-01-18
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a structural color contact lens based on the coffee ring effect, which solves the problems in the prior art that the contact lens is modified based on the pigment or dye layer, which leads to insufficient safety, sanitation, and low reliability of wearing the lens.

Method used

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  • Structural color contact lens based on coffee ring effect and preparation method thereof
  • Structural color contact lens based on coffee ring effect and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The preparation of embodiment 1PHEMA structural color contact lens

[0038] 1. Preparation of colloidal solution:

[0039] Add the monodisperse dry powder of silica colloidal nanoparticles with methyl groups on the surface to absolute ethanol solution, adjust the colloidal particle concentration to 0.015g / ml, and ultrasonically disperse to obtain a uniform silica colloidal particle solution;

[0040] 2. Assembly of colloidal particles on the inner wall of the mold:

[0041] Add 200 microliters of ethanol solution (0.015g / ml) of silicon dioxide colloidal particles into the mold used for contact lens preparation, place it in an oven at 100°C and keep it for 15 minutes, and the colloidal particles will be assembled in the mold as the ethanol volatilizes. A ring-shaped uniform and orderly close-packed colloidal crystal film, leaving a circular blank area with a diameter of 0.45 cm in the center of the bottom;

[0042] 3. Curing and hydration treatment of structural colore...

Embodiment 2

[0044] Embodiment 2 The adjustment of the size of the pupil region of the contact lens

[0045] Step 3 is the same as Example 1, and the size of the pupil area can be adjusted by adjusting the concentration of silicon dioxide particles and the volume added to the mold. In step 1, when changing the concentration of silica particles to 0.005, 0.01, 0.015, and 0.02 g / ml respectively, the size of the pupil area of ​​the contact lens obtained is 0.58, 0.55, 0.45, and 0.35 cm; in step 2, when changing When the volume of the silicon dioxide particle solution added is 150, 200, 250, 300 ul respectively, the size of the pupil area of ​​the obtained contact lens is 0.49, 0.45, 0.43, 0.38 cm.

Embodiment 3

[0046] The color adjustment of embodiment 3 contact lenses

[0047] Steps 2 and 3 are the same as in example 1. In step 1, structural color hydrogel contact lenses with main colors of different reflection colors can be prepared by adjusting the diameter of silica particles.

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Abstract

The invention discloses a structural color contact lens based on coffee ring effect and a preparation method thereof; the contact lens comprises a contact lens substrate, and is characterized in that the contact lens substrate contains ordered porous hydrogel which is used to form structural colors, is arranged annularly or circularly and is close-packed. With respect to other structural color contact lenses, the process of the preparation method is simple, and the prepared structural color contact lens has good biocompatibility, high light transmittance, and very good practicality.

Description

technical field [0001] The invention belongs to the technical field of contact lenses, and in particular relates to a structural colored contact lens based on the coffee ring effect and a preparation method thereof. Background technique [0002] Over the past 30 years, the total number of contact lens wearers worldwide has increased 35-fold. Colored contact lenses can not only correct vision, but also beautify the iris with its rich colors and patterns. Driven by the global fashion industry, they have gradually become popular since they came out, and have received high attention and market popularity. According to incomplete statistics, my country's colored contact lenses currently account for more than 35% of the contact lens market. [0003] Early colored contact lenses directly print colored patterns on the iris area of ​​the lens surface (US Patent No. 3,476,499). Pigments often have problems of low biocompatibility and surface unevenness, which can easily cause severe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02C7/04B29D11/00C08F220/28
Inventor 顾忠泽谢卓颖赵远锦金露李婷婷
Owner SOUTHEAST UNIV
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