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Blue-ray-proof lens and resin raw material thereof

An anti-blue light and lens technology, applied in the lens field, can solve the problems of damage to the wearer's eyesight, complex process, high cost, etc., and achieve the effects of high and low haze, high light transmittance, and wide adaptability

Inactive Publication Date: 2017-05-17
HEFEI WIYE OPTICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current practice is to coat the surface of the lens with a coating with a low transmittance to light of 420-460nm wavelength, such as melatonin coating to achieve the purpose of anti-blue light, but the transmittance of visible light of products prepared by this method is generally low If it is less than 80%, it will damage the eyesight of the wearer if it is used on the myopia worn by people for a long time; at the same time, the process of this method is complicated and the cost is high

Method used

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  • Blue-ray-proof lens and resin raw material thereof

Examples

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preparation example Construction

[0031] As an improvement of the anti-blue light lens of the present application, the method of surface modification treatment adopts in-situ polymerization modification method to overcome the defect that nanomaterials are extremely prone to agglomeration. The preparation method includes at least the following steps:

[0032] (1) Add the rare earth oxide and 3-methacryloyloxytrimethoxysilane (MPTMS) into the organic solvent and mix thoroughly;

[0033] (2) Then add methyl methacrylate (MMA) and initiator, mix well and react at 70-80°C for 2-8 hours;

[0034] (3) After the reaction is completed, the surface-modified nano-rare earth oxide is obtained after precipitation and drying, and the particle size of the nano-rare earth oxide after treatment is 3-10 nm.

[0035] As an improvement to the anti-blue light lens of the present application, in step (1), the mass ratio of rare earth oxide to 3-methacryloxytrimethoxysilane is 10-30:1, preferably 12.5-25: 1. Within this range, the...

Embodiment 1

[0048] 1. Add rare earth oxides and 3-methacryloxytrimethoxysilane (MPTMS) with a median particle size of 2 to 5 nm into toluene, and the rare earth oxides are cerium oxide and praseodymium oxide with a mass ratio of 7:3 ; Mix in an ultrasonic mixer for 60 minutes to prepare an emulsion of nano-alkene earth oxides; the volume-to-weight ratio of toluene to rare earth oxides is 10:1; the ultrasonic frequency of the ultrasonic mixer is 20KHz to 40KHz;

[0049] 2. Then add methyl methacrylate and benzoyl peroxide (BPO), the mass ratio of MMA to BPO is 100:0.1; mix with an ultrasonic mixer for 20 minutes, and react at a temperature range of 75-78°C for 3-4 hours ;

[0050] 3. After the reaction is completed, add methanol to the reaction system for precipitation to obtain a light yellow precipitate. The volume ratio of methanol to toluene is 1:5-10; dry the precipitate at 80-100°C for 4-6 hours, Instant anti-blue light additive;

[0051] 4. Dry the polymethyl methacrylate resin, t...

Embodiment 2

[0056] 1. Add rare earth oxides and 3-methacryloyloxytrimethoxysilane (MPTMS) into toluene, and mix them in an ultrasonic mixer for 60 minutes to obtain an emulsion of nano-alkene earth oxides; the mixture of toluene and rare earth oxides The volume-to-weight ratio is 10:1; the mass ratio of rare earth oxide to MPTM is 20:1; the ultrasonic frequency of the ultrasonic mixer is 20KHz-40KHz;

[0057] 2. Then add methyl methacrylate and benzoyl peroxide (BPO), the weight ratio of MMA to BPO is 100:0.1; use an ultrasonic mixer to mix for 20 minutes, and react at a temperature range of 75-78°C for 3-4 Hour; Wherein, the mass ratio of MPTMS and MMA is 1:80;

[0058] 3. After the reaction is completed, add methanol to the reaction system for precipitation to obtain a light yellow precipitate, the volume ratio of methanol to toluene is 1:5-10; dry the precipitate at 80-100°C for 4-6 hours, that is Anti-blue light additive;

[0059] 4. Dry the polymethyl methacrylate resin, then add a...

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Abstract

The invention relates to the field of a lens and specifically relates to a blue-ray-proof lens and a resin raw material thereof. A substrate polymer and a blue-ray-proof additive are contained in the lens; a nanometer rare earth oxide subjected to surface modification treatment is served as the blue-ray-proof additive; 3-methacryloxy trimethoxy silane and polymethyl methacrylate are contained in a modifying material used for the surface modification treatment. According to the invention, the nanometer rare earth oxide subjected to surface-cladding treatment is added into the substrate polymer, so that the lens has a better converting absorbing function for the 400-470nm high-energy blue ray; the high transparency and low haze of the lens can be guaranteed; the lens can meet the manufacturing requirements of the myopic lens, presbyopic glasses and sun glasses; the lens has wide adaptability.

Description

technical field [0001] The present application relates to the field of lenses, in particular, to an anti-blue lens and its resin material. Background technique [0002] Anti-blue light glasses refer to products whose lens materials have a good absorption or shielding effect on blue light with a wavelength of 400-500nm, especially blue light with a wavelength of 420-470nm, such as sunglasses, myopia glasses, reading glasses, etc. The current practice is to coat the surface of the lens with a coating with a low transmittance to light of 420-460nm wavelength, such as melatonin coating to achieve the purpose of preventing blue light, but the transmittance of visible light of products prepared by this method is generally lower If it is less than 80%, it will damage the eyesight of the wearer if it is used on myopia glasses worn by people for a long time; meanwhile, the process of this method is complicated and the cost is relatively high. [0003] In view of this, the present ap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/12C08L69/00C08K9/10C08K3/22G02B5/20G02C7/10
CPCC08K3/22C08K9/10C08K2003/221C08K2003/2213C08K2201/011C08L2201/10G02B5/20G02C7/10C08L33/12C08L69/00
Inventor 何顺伦
Owner HEFEI WIYE OPTICAL TECH CO LTD
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