Evaluation and reduction of aberrations in distributed-index lenses: a review.
Studies on evaluating and measuring aberrations of rod lenses which have mostly parabolic distribution of refractive index have been reviewed. Some efforts at reducing aberrations by controlling the fabrication process are also summarized.
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Tokyo Institute of Technology, Research Laboratories of Precision Machinery & Electronics, 4259, Nagatsuta, Midoriku, Yokohama, 227, Japan.