Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Broadband multi-layer anti-reflection film and preparation method thereof

An anti-reflection and thin-film technology, which is applied in the field of broadband multi-layer anti-reflection films and their preparation, can solve the problems of harsh operating conditions, complex preparation processes, and difficulty in precise adjustment of film thickness and refractive index.

Active Publication Date: 2014-04-23
杭州浸格科技有限公司
View PDF5 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a broadband multi-layer anti-reflection film composed of nano-hollow particles in order to solve the problems of complex preparation process, harsh operating conditions and difficulty in precise control of film thickness and refractive index existing in the current multi-layer anti-reflection film. , the refractive index and thickness of each layer of the wide-wavelength multilayer anti-reflection film can be conveniently and effectively adjusted by adjusting the cavity volume fraction and particle size of the nano-hollow particles, and the preparation process is simple, environmentally friendly, and low-cost

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Broadband multi-layer anti-reflection film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] (1) Nanopolymer hollow particles with a cavity volume fraction of 0.15, a particle size of 90nm and a cavity volume fraction of 0.30, and a particle size of 105nm were prepared as the constituent materials of the first film and the second film. The preparation steps are as follows:

[0061] Take 0.6 grams of the amphiphilic macromolecular reversible addition chain scission chain transfer reagent prepared in step (1) 1.1 of Comparative Example 1 and 80 grams of deionized water to prepare an aqueous solution as the water phase, and add 7 grams of methyl methacrylate Esters, 9 grams of p-divinylbenzene, 0.05 grams of azobisisobutyronitrile and 4 grams of paraffin oil phase are mixed evenly, and ultrasonically pulverized by an ultrasonic pulverizer for 5 minutes at an ultrasonic power of 650w to prepare a fine emulsion . Move the miniemulsion into a reactor, react at 70°C for 6 hours, stop the reaction, cool to room temperature, break the emulsion, and filter with suction ...

Embodiment 2

[0072] The operations of Examples 2 and 3 are the same as in Example 1, except that the mass percentage of the aqueous dispersion of nanopolymer hollow particles used in step b) and d) of step (2) of Example 2 The concentration is changed from 1% to 2%, and the mass percent concentration of the aqueous dispersion of nanopolymer hollow particles used in step b) and d) of step (2) of Example 3 is changed from 1% to 3% % to prepare double-layer anti-reflection films. It was found that: with the increase of the concentration of the nanopolymer hollow particle dispersion, the thickness of each layer of the prepared double-layer anti-reflection film remained basically unchanged, which indicated that in the self-assembly process, the dispersion concentration of the nanometer hollow particle had a significant effect on The thickness of the film has little influence, and the thickness of each layer of film mainly depends on the diameter of the nano-polymer hollow particles. When the ma...

Embodiment 4

[0074] (1) The preparation steps of nanopolymer hollow particles are as follows:

[0075] Take 0.5 grams of the amphiphilic macromolecular reversible addition chain scission chain transfer reagent prepared in step (1) 1.1 of Comparative Example 1 and 80 grams of deionized water to prepare an aqueous solution as the water phase, and add 7 grams of methyl methacrylate Esters, 8 grams of p-divinylbenzene, 0.05 grams of azobisisobutyronitrile and 5 grams of paraffin oil phase are mixed evenly, and ultrasonically pulverized by an ultrasonic pulverizer for 5 minutes at an ultrasonic power of 650w to prepare a fine emulsion . Move the miniemulsion into a reactor, react at 80°C for 6 hours, stop the reaction, cool to room temperature, break the emulsion, and filter with suction to obtain highly cross-linked nanopolymer capsules in the shell. The above-mentioned nano polymer capsules are dried in a vacuum oven at 180°C for 5 hours to remove the core material and unreacted residual mon...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
thicknessaaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for preparing a broadband multi-layer anti-reflection film by use of nano hollow particles. The method comprises the following steps: according to the requirements on the thickness and refractive index of each layer of anti-reflection film, preparing nano hollow particles matching with the anti-reflection film in cavity volume fraction and particle size, and forming the aqueous dispersion of corresponding nano hollow particles through ultrasonic dispersion; and sequentially performing self-assembly and drying on the base material to obtain a two-layer or three-layer anti-reflection film with gradient change of refractive index, wherein the prepared multi-layer anti-reflection film can effectively improve the light transmittance of the base material within a wider band range; and after the two sides of common glass are coated with the broadband two-layer anti-reflection film, the optimal light transmittances in the visible and near-infrared band areas both exceed 98%. After the two sides of a quartz plate are coated with the broadband three-layer anti-reflection film, optimal light transmittances in the visible and near-infrared band areas both exceed 98%, and the light transmittance in the near-infrared band area is higher than that of the double-layer anti-reflection film.

Description

(1) Technical field [0001] The invention relates to a broadband multilayer anti-reflection film and a preparation method thereof. (2) Background technology [0002] Since the single-layer anti-reflection film can effectively reduce the reflected light only in a specific incident angle and narrow wavelength range, the reflectivity in a certain wavelength range has a V-shaped distribution, which greatly reduces its use effect and application range. . In order to improve the optical performance and industrial application value of the anti-reflection film, the anti-reflection film can effectively reduce the reflectance of light in a wider wavelength range, and the wide-wavelength multilayer anti-reflection film has become a research hotspot in the field of materials and optics. one. [0003] The multi-layer anti-reflection film is composed of a group of single-layer anti-reflection films with gradient changes in thickness and refractive index. When the surface of an optical el...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/00C03C17/38
Inventor 孙志娟蒋春跃
Owner 杭州浸格科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com