How to use PET silver plated reflective film to improve the transmittance of optical components?

In the field of optics, improving the transmittance of optical components has always been a research hotspot.PET silver plated reflective filmAs an advanced optical material, it is widely used in various optical components due to its high reflectivity, high transparency, and good mechanical properties. This article will provide a detailed introduction on how to use PET silver plated reflective film to improve the transmittance of optical components, and cite relevant research results from Advanced Institute (Shenzhen) Technology Co., Ltd.

Characteristics of PET silver plated reflective film

high reflectivity

The reflectivity of PET silver plated reflective film in the visible light range can reach over 80% to 97%, and some film surfaces can even achieve a reflectivity of over 90%. This feature makes it perform well in application scenarios that require high reflectivity. For example, in liquid crystal display devices, PET silver plated reflective film can be used as a reflective sheet under the backlight light guide plate, effectively reflecting the light emitted by the light source to improve the brightness of the image.

High transparency

In addition to high reflectivity,PET silver plated reflective filmIt also has high transparency. In the range of 450-2000nm, its average reflectivity is as high as 97.5%, and in terms of transmission, PET silver plated reflective film also performs well, with a transmittance of about 70%. This means that when sunlight penetrates the PET silver plated reflective film, only a small amount of light energy is absorbed or scattered, and most of the light energy is retained and used for power generation or other optical applications. In addition, experimental data shows that the transmittance of PET silver plated reflective film can reach over 65% in the wavelength range of 400-700nm, further proving its excellent transmittance performance.

Good flexibility and weather resistance

PET material itself has good flexibility and weather resistance, which enables PET silver plated reflective film to adapt to various complex application environments. At the same time, PET silver plated reflective film also has good chemical stability, which can effectively resist oxidation and corrosion, and extend its service life.

Methods to improve the transmittance of optical components

Optimize the thickness of the silver plating layer

The thickness of the silver plating layer has a significant impact on the reflectivity and transparency of PET silver plated reflective film. Although an excessively thick silver plating layer can increase reflectivity, it will reduce transparency; However, a thin silver plating layer may lead to insufficient reflectivity. Therefore, it is necessary to balance reflectivity and transparency by precisely controlling the thickness of the silver plating layer.Advanced Institute (Shenzhen) Technology Co., LtdBy optimizing the vacuum evaporation process, a PET silver plated film with a silver coating thickness of 50nm was successfully prepared, and its surface resistivity reached about 3 Ω/□, showing better conductivity and transparency. Compared with similar products from other companies, its preparation cost has been reduced by 15% under the same transparency index, or its transparency has been improved by 10% under the same cost.

Application of multi-layer film structure

To improve the transmittance of optical components, a multi-layer film structure can be used. By adding a dielectric film or transparent convex layer on the PET substrate, the loss of specular reflection light can be reduced and the transmittance can be improved. For example, the high brightness silver plated reflective film used in backlight modules adopts a multi-layer film structure consisting of a PET substrate, an adhesive layer, and a silver plated reflective layer. The thickness of the silver plated reflective layer is 20-40nm, and a brightening layer is provided to improve brightness. The experimental results show that by depositing a dielectric film with a thickness of 100nm on the PET substrate, the optical constant is 1.5, and it has been found through testing that the transmittance can be increased by 15%.

Surface treatment technology

In addition to selecting appropriate coating materials and techniques, surface treatment of the substrate is also a key step in ensuring high-quality coating. Through steps such as cleaning, activation, and chemical modification, pollutants on the substrate surface can be removed, surface energy can be increased, and specific functional groups can be introduced to enhance the adhesion and performance of the film layer. Advanced Institute (Shenzhen) Technology Co., Ltd. has achieved significant results in surface treatment technology, and further improved by optimizing the treatment processPET silver plated reflective filmOptical and mechanical properties.

Application Cases

Liquid Crystal Display (LCD)

In LCD displays, PET silver plated reflective film can be used as a reflective sheet in backlight modules. By improving reflectivity and transparency, PET silver plated reflective film can significantly enhance the brightness and color saturation of liquid crystal displays. Meanwhile, its excellent flexibility and weather resistance also make LCD displays more durable and reliable. Experimental data shows that using PET silver plated reflective film in liquid crystal displays increases brightness by 20% under the same power consumption.

Solar panels

PET silver plated reflective film is also widely used in the field of solar panels. By using PET silver plated reflective film as a reflector, sunlight can be reflected onto the solar panel, increasing the amount of light received by the solar panel. Experiments have shown that solar panels using PET silver plated reflective film have increased power generation efficiency by about 10% to 20% compared to unused solar panels under the same lighting conditions.

conclusion

PET silver plated reflective filmWith its high reflectivity, high transparency, and excellent mechanical properties, it has shown great potential in improving the transmittance of optical components. By optimizing the thickness of the silver plating layer, applying multi-layer film structures, and surface treatment techniques, the optical properties of PET silver plated reflective films can be further improved. Advanced Institute (Shenzhen) Technology Co., Ltd. has achieved significant results in the research and application of PET silver plated reflective film, providing strong support for the development of the optical field. In the future, with the further development of materials science and nanotechnology, we have reason to believe that PET silver plated reflective films will play an important role in more fields.
The above data is for reference only, and specific performance may vary due to production processes and product specifications.