China Film Group
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08
2023
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06
The working principle of reflective film
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Concept and types of 1. reflective films
Reflective film is an optical material with high reflection characteristics, which can reflect light to a specified direction, thereby reducing the loss of light energy. At present, there are mainly two types of reflective films on the market, one is a metal reflective film, and the other is a dielectric reflective film. The metal reflective film is made of metal materials, such as silver, aluminum, etc., and is generally used in products such as mirrors and reflectors. The dielectric reflective film is made of a dielectric material, and its optical properties are different from those of the metal reflective film.
The working principle of 2. reflective film
The working principle of the reflective film is based on the "law of reflection" of optics, that is, the angle of incidence is equal to the angle of reflection. When light strikes the surface of the reflective film perpendicularly from the medium, most of the light will be reflected back and only a very small part of the light will be absorbed. In the solar panel, the reflective film can reflect the scattered and transmitted light back into the panel, thereby improving the photoelectric conversion efficiency. In products such as projectors and LED displays, the reflective film can project a bright image to the audience.
Performance and Application of 3. Reflective Film
At present, the reflective film has high reflectivity and heat resistance, and has good reflective properties in various wavelength ranges such as visible light, infrared and ultraviolet light. In the application of solar panels, the reflective film can improve the photoelectric conversion efficiency of the panel while reducing the loss of light energy; in products such as projectors and LED displays, the reflective film can improve the brightness and contrast of the image, making the image more realistic And clear. In addition, in the construction and automotive glass and other products, the reflective film has also been widely used.
The advantages and disadvantages of 4. reflection film and development trend
The reflective film has the advantages of high reflectivity and good heat resistance, but it also has some disadvantages, such as high cost and difficult to prepare into a large-area material. In the future, with the development of science and technology and the emergence of new materials, the performance of reflective films will be further improved and applied in more fields, such as photovoltaic, LED lighting, aerospace and so on.
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