Multi-channel Interference Filters

Multi-channel filters have important applications in optical communication, optical imaging, and remote sensing hyperspectral. In recent years, optical thin films have become an indispensable part of modern optics, involving almost every aspect of modern optical systems. With the development of optical film filters towards small size and high integration, multi-channel filter films are widely used in information communication, satellite imaging, and remote sensing due to their advantages of small size, high integration, and large amount of information. Spectroscopy and other aspects have been widely used. Beijing Jingyi Bodian Optical Technology Co., Ltd. has more than 30 years of experience in thin film technology research and development and product production. It has a strong technical team and advanced automatic optical coating equipment. It uses ion-assisted process film formation, combined with photoresist mask method , capable of fabricating micron-scale multi-channel integrated filters. Professional staff and advanced and complete production, testing, and reliability testing equipment provide customers with competitive products and services in terms of quality, delivery, and cost. The size, spectral requirements and wavelength range of the multi-channel optical filters produced by BOE can be customized according to the requirements of customers.

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The multi-channel spectral filter has a cutting-edge spectroscopic function, which can sharply optimize the structure of imaging spectrometer spectroscopic system and apply it as a spectroscopic element in the imaging spectrometer. The miniaturization and weight reduction of the imaging spectrometer can be realized. Therefore, multi-channel filters play a significant role in miniaturized and lightweight imaging spectrometers. Multi-channel filters are different from traditional filters in that their channel size is in the order of microns (5-30 microns). Generally, multiple or combined exposures and thin-film etching methods are used to prepare the size and intermediate thicknesses of different thicknesses. The cavity layer is used to realize the regulation of the spectral channel peak position of the filter. When using this method to prepare multi-channel filters, the number of spectral channels strongly depends on the number of overlay processes.