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Introduction to Optical Coating in Vacuum Optical Coating Equipment

Introduction to Optical Coating in Vacuum Optical Coating Equipment

2022-01-22

Introduction to Optical Coating in Vacuum Optical Coating Equipment






Vacuum optical coating refers to a coating that can change the optical properties of optical components. Its purpose can be anti-reflection, anti-glare, filtering, etc., and according to different purposes, optical component manufacturers need to choose different materials for coating.


With the continuous expansion of the application scope of plastic coating products in the optical field, the industry has higher and higher requirements for plastic coating products, and the method is relatively difficult. At present, the optical performance of conventional coating products of optical plastic products is low. The conventional coating process of optical plastic products needs to use an ion source for auxiliary coating. In the development of the entire coating process, such as the vacuum degree and the improper control of the coating process parameters, it is easy to cause the film layer to fall off and crack the film, and the abnormality in the coating process will lead to the whole process. Furnace scrapped.


The essence of increasing the transmitted light intensity by the anti-reflection coating of the vacuum optical coating machine is that the light wave as an electromagnetic wave changes its energy distribution at the interface of different media during the propagation process due to the difference of boundary conditions. It is said that when the medium on both sides of the anti-reflection coating is different, the thickness of the film is an odd multiple of 1/4 wavelength and the refractive index of the film is n=(n1*n2)^(1/2) (the refractive index of medium 1 and 2, respectively) ), so that all incident light can pass through the medium.


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