Optical thin film technology is an old and new optical technology, widely used in scientific research, industry, medical treatment, aviation, aerospace, national defense and other fields. With the continuous expansion of application fields, optical thin film technology has developed into a professional technology. The application of optical thin film mainly includes imaging optical system application and non-imaging optical system application, mainly realizing spectrum selection, light energy enhancement and color difference equalization.
With the continuous development of space technology in China, remote sensing technologies such as earth observation and space exploration have become the main development direction of space technology, mainly including meteorological observation, land and resources exploration, and ocean exploration. The continuous development and application of various space cameras, spectrometers, telescopes, etc. have expanded a broader application field for the development of optical thin film technology, such as the application of infrared optical thin film in satellite remote sensing, navigation, etc., and the application of narrowband ultra-narrowband filters in the new generation of space optical remote sensing instruments. With the continuous expansion of optical thin film technology in space applications, the influence of space environment on optical thin film has gradually been paid attention to and studied. So far, space optical thin film technology has been developed. The uniqueness of space optical thin film technology is mainly reflected in two aspects. On the one hand, the spectral stability requirements are very high. Under the space environment conditions, the external vacuum, extreme cold and extreme heat alternation, charged particle bombardment, atomic oxygen corrosion and ultraviolet radiation will change the properties of optical film materials, thus affecting the spectral characteristics of the film. In order to ensure the spectral stability of the film, the design, process, performance testing and other aspects should be considered; On the other hand, due to the non-maintainability of space applications, space optical thin film technology must be highly reliable. In order to ensure the reliability of space applications, we also need to carry out space environment simulation test and harsh environment adaptability test on the optical film produced to investigate the reliability of the film. In short, space optical thin film technology has developed into a unique optical thin film application technology, providing a technical basis for space exploration, remote sensing, etc
Since its establishment, the Key Laboratory of Surface Engineering Technology has been committed to the research and exploration of space optical thin film technology, and has made many research achievements in the design, preparation process, performance test and space environment simulation test of space optical thin film. It has successively developed the infrared band-pass filter and antireflective film for the “Resource-1” series of satellite infrared multispectral scanners used in cooperation between China and Brazil The ultra-narrow band filter used for the “FY-4” satellite lightning detector and the linear gradient filter developed as a new technology and other space optical film products.