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2 March 2020 Hyperspectral imaging using a Linear Variable Filter (LVF) based ultra-compact camera
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Abstract
Narrow bandwidth linear variable filters (NB-LVF) bring hyperspectral imaging to a wide range of applications in a compact, low weight, rigid structure. The center wavelengths of the narrow bandpass of a linear variable filter changes smoothly in one dimension and are constant in the orthogonal dimension along the surface of the filter. The filter, which is the size of the camera’s detector, is placed directly ahead of the detector and successive frames are acquired as the camera skews or as the camera platform moves across a scene. The full width, half maximum bandwidth of the filter used is 0.8% of the center wavelength and the spectral range is 400 to 900 nm with a wavelength gradient of 50 nm/mm. Examples using the LVF camera for emission spectroscopy, absorption spectroscopy, machine vision, and industrial process control and hyperspectral imaging are presented.
Conference Presentation
© (2020) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Thomas D. Rahmlow Jr., William Cote, and Robert Johnson Jr. "Hyperspectral imaging using a Linear Variable Filter (LVF) based ultra-compact camera", Proc. SPIE 11287, Photonic Instrumentation Engineering VII, 1128715 (2 March 2020); https://doi.org/10.1117/12.2546709
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