22 September 1997 Construction of a detection system with a wide field of view
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Proceedings Volume 3110, 10th Meeting on Optical Engineering in Israel; (1997) https://doi.org/10.1117/12.281359
Event: 10th Meeting on Optical Engineering in Israel, 1997, Jerusalem, Israel
Abstract
Filters used in communication systems in the atmosphere are usually of interference-filter type or of step-filter type. The major disadvantage of the interference filter is the limitation on the maximum incidence angle. In the step filter, the incidence angle is not limited. However, it has a wide spectral bandwidth. Therefore more background radiation enters the detector and as a result more noise is generated. The aim of this project is to design and fabricate an interference filter with a wide field of view. The filter is fabricated by evaporating thin films of suitable materials onto a transparent hollow hemisphere. The center of the detector will coincide with the center of the hemisphere. In this structure, the incident radiation always hits the filter at small angles independent of the transmitter position, so that the signal will always reach the detector.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
T. Verker, T. Verker, Naftali Schweitzer, Naftali Schweitzer, Jack Broder, Jack Broder, Naftali Paul Eisenberg, Naftali Paul Eisenberg, } "Construction of a detection system with a wide field of view", Proc. SPIE 3110, 10th Meeting on Optical Engineering in Israel, (22 September 1997); doi: 10.1117/12.281359; https://doi.org/10.1117/12.281359
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