It will also play a positive role in promoting the development of PVD vacuum coating equipment.
In the solar cell industry, crystalline silicon technology has long occupied the mainstream position. Due to the high cost of crystalline silicon technology, the industry has been reducing the cost through technologies such as the improvement of cell conversion efficiency and the reduction of the thickness of silicon wafers; at the same time, thin film solar Due to the advantages of batteries such as good low light performance (that is, strong power generation capacity in cloudy days), low production costs, and easy integration, thin-film solar cells have gradually attracted the attention of the industry and have grown rapidly. In the future, the market share of thin-film solar cells will gradually increase. It will also play a positive role in promoting the development of PVD vacuum coating equipment.
PVD Vacuum coating machine
【Optical lens coating machine】Test method
The most basic method to judge and test the wear resistance of anti-wear film is clinical application. Let the wearer wear it for a period of time, and then observe and compare the wear of the lens with a microscope. Of course, this is usually the method used before this new technology is officially promoted. At present, the faster and more intuitive test methods we commonly use are:
1) Sanding test
Put the lens into a promotional material containing gravel (the grain size and hardness of the gravel are regulated), and rub it back and forth under certain control. At the end of the test, the diffuse reflectance of the lens before and after rubbing was measured with a hazard meter and compared with the standard lens.
2) Steel wool test
Under a certain pressure and speed, a certain type of steel wool is rubbed on the surface of the lens 100 times, and then the diffuse reflection of the lens before and after rubbing is measured with a haze meter, and compared with the standard lens. Of course, we can also operate by hand, rub the two lenses the same number of times with the same pressure, and then observe and compare with the naked eye.
3) The relationship between anti-reflection film and anti-wear film
The anti-reflection coating on the lens surface is a very thin inorganic metal oxide material (less than 1 micron in thickness), which is hard and fragile. When coating a glass lens, it is not easy to scratch the film because the substrate is hard and there are grit scratches on it; however, when coating an anti-reflection coating on an organic lens, since the film base is soft and scratches the gravel on the film, Therefore, the film is easily scratched.
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