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Multiangle spectral sensitivity analysis method for film system and application of method

A sensitivity analysis, multi-angle technology, used in optics, optical components, instruments, etc., can solve problems such as aggravating product optical uniformity and optical performance changes, shortening product development cycles, optimizing product performance, and avoiding product debugging. Effect

Active Publication Date: 2016-11-23
BEIJING HANGBO NEW MATERIAL TECH
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  • Claims
  • Application Information

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Problems solved by technology

After installation and use of various coating products used outdoors, sunlight is the light source, and most of them have a non-0° incident angle, so there will inevitably be changes in optical performance due to changes in the incident angle of the sun, and aggravate the optical uniformity of the product due to process fluctuations. sexual problems

Method used

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  • Multiangle spectral sensitivity analysis method for film system and application of method
  • Multiangle spectral sensitivity analysis method for film system and application of method
  • Multiangle spectral sensitivity analysis method for film system and application of method

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Embodiment 1

[0042] Taking magnetron sputtering as an example of a large-area solar selective absorption film, the solar selective absorption film is mainly used for photothermal conversion, and its main goal is to absorb solar energy to the greatest extent and convert it into heat energy, so its main performance is reflected in solar energy. Absorption rate, the greater the solar absorption rate, the better the product performance. Since the absorptivity is not easy to measure directly, and the solar selective absorbing film layer is plated on an aluminum plate, its transmittance is 0. According to the principle of energy conservation, the absorptivity of the product = 1-reflectivity, so if the solar absorptivity of the product Maximum, which corresponds to the minimum solar reflectance. Table 1 shows the target position and material configuration of the production line, and the film layer order determined by it. The substrate is an aluminum plate with a thickness of 1mm; when using magne...

Embodiment 2

[0063] The following uses the antireflection and antireflection coating as an example. The anti-reflection and anti-reflection coating is to increase the transmittance of the substrate and reduce the reflectivity by coating multi-layer films with different optical constants on the surface of the substrate. The substrate can be transparent materials such as glass and resin. The performance of anti-reflection and anti-reflection coatings is mainly aimed at visible light, so the wavelength range of calculation and analysis is 380-780nm in the visible light band. According to the characteristics of performance requirements, the visible light transmittance of the product film system needs to reach the maximum. The present invention uses 3mm borosilicate glass as the substrate, and Table 7 shows the target configuration of the production line and the sequence of the film layers determined. The production conditions prepare a total of 4 layers of anti-reflection and anti-reflection co...

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Abstract

The invention discloses a multiangle spectral sensitivity analysis method for a film system and application of the method. The analysis method comprises the following steps: performing initial film layer thickness setting according to a product performance constraint condition under the condition that a film layer sequence and a film layer optical constant are determined; establishing a film system admittance matrix model, and converting a substrate and the film layer sequence, the film layer optical constant and the initially set film layer thickness of each thin film into a characteristic matrix; calculating the transmittance and reflectivity spectrum data of the film system by virtue of the combined characteristic matrix of the substrate and each thin film. According to the method, a reasonable film system thickness design range is established according to comprehensive performance requirements of the product and a production condition, and a reasonable and accurate film system structure admittance matrix optical model is established; the product spectral and optical performance of the film system under different incident angle conditions can be rapidly analyzed to obtain a film system structure with minimal optical performance changes in case of angle changes by virtue of a genetic algorithm.

Description

technical field [0001] The invention relates to the technical field of coating optical properties, in particular to a film system multi-angle spectral sensitivity analysis method and its application. Background technique [0002] Improving the optical properties of the material is one of the main purposes of coating the surface of the material. For example, the selective absorption of sunlight coating is to coat the surface of the aluminum plate with a multi-layer film that can effectively absorb sunlight energy, so as to convert solar energy into light and heat; The anti-reflection film system is to reduce the reflection of the film surface and increase the transmittance by alternately plating multiple layers of films with different optical constants on the glass surface. The optical performance of the product can be evaluated by indicators such as visible light transmittance, solar light transmittance, color, etc. These optical properties are the result of the interference...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/00
CPCG02B27/0012
Inventor 余刚汪洪
Owner BEIJING HANGBO NEW MATERIAL TECH
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