Influence of the shape of a wavelength-tunable light filter on its spectral properties
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A study has been made of the influence of the geometric shape of a wavelength-tunable light filter on its following properties: 1) the tuning range of the wavelength selected by the light filter; 2) the ratio of the geometric cross sections of the input and output light beams; 3) the angle between the incident radiation and the filtered radiation. A calculation is made of the optimal ratios of the prism faces and angles suitable for making light filters. The reasons for the formation of so-called “parasitic” rays are considered with methods for eliminating them.
KeywordsMultiple Layer Total Internal Reflection Output Beam Light Filter Input Face
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