Abstract
This work presents a new configurable imaging spectrometer called Autonomous Tunable Filtering System (ATFS). The system can be configured to acquire a single narrow spectral band, a composite multispectral image, or a broad pass-band. This flexibility is given by the use of an Acousto-Optic Tunable Filter (AOTF) driven by a programmable radio frequency (rf) signal generator. The AOTF acts as a light-diffraction element which output wavelength is selected by the frequency of an rf signal applied to it. The designed rf driver is based on a high-speed Digital-to-Analog converter, which can synthesize any composite rf waveform formed by a combination of sine signals. The images are formed through a carefully designed optical layout and acquired with a high performance digital camera. Spectral and spatial performance of the system is presented in this paper.
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Vila-Francés, J., Gómez-Chova, L., Amorós-López, J., Calpe-Maravilla, J. (2008). Configurable Passband Imaging Spectrometer Based on Acousto-optic Tunable Filter. In: Blanc-Talon, J., Bourennane, S., Philips, W., Popescu, D., Scheunders, P. (eds) Advanced Concepts for Intelligent Vision Systems. ACIVS 2008. Lecture Notes in Computer Science, vol 5259. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-88458-3_19
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DOI: https://doi.org/10.1007/978-3-540-88458-3_19
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