Earth Observation - Multispectral and Hyperspectral Imaging

Multispectral and hyperspectral imaging technology is widely used for remote sensing applications like for meteorology, environmental testing, and in agriculture. Especially for drone applications, compact and lightweight components are required to achieve a complete spectrum for each pixel of the image. By using photolithographic techniques, up to 10 microfilters can be arranged side by side on typical substrates with filter features down to 20 μm. Even direct coating of imaging sensors is feasible to eliminate the filter substrate. To detect more spectral bands beyond 10 channels, linear variable filters combined with patterned black chromium coatings are applied. The complete sensor can be protected by a hermetically sealed cover lid, which can be added by using a patterned Gelot™ solderable coating.