The optical imaging and radiometric properties of arrays of GRIN fiber lenses (Selfoc lens arrays) have been studied as a function of the length of the fibers. Experiments measured the object-to-image distance, image quality (MTF), depth of focus, image irradiance distribution, and exposure for a set of Selfoc lenses with differing fiber length. Simple models were used to explain the observed dependences, and analytical formulas were developed for the prediction of these optical properties.
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W. L. Lama (1982) studied this question.
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