大きなΔnを持つ低分散分布radial-GRINレンズのガラス組成設計

概要

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A gradient index (GRIN) lens is the optical device, which has the distribution of the refractive index in the glass medium. A chromatic aberration is very important when the GRIN lens is used for the optical systems under a source of white light such as a camera and microscope. So, we designed γ-GRIN glass composition, which has an improvement in refractive index and a low dispersion distribution to reduce a chromatic aberration, and we also examined suitable preparation method. Then we chose SiO_2-TiO_2-BaO-K_2O glass system and sol-gel process. The theoretical proof of the selection of the SiO_2-TiO_2-BaO-K_2O glass system and the promising composition of the low distributed dispersion γ-GRIN lens with large Δn were shown by this study.
2002-12-01