E29 特殊Ni合金メッキ製金型によるガラスレンズ成形例(OS-11 超精密加工(1))

概要

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Optical and optoelectronic product such as digital cameras, mobile phone, and high-density optical disc systems use many optical lenses. Another attention-attracting trend is the development of compound glass lenses, namely, lenses that combine the refractive and diffractive functions of light. Compound lenses can consolidate the functions of two lenses into one. We developed the special Ni-alloy plated mold. This mold can be easily fabricated into diffractive patterns by cutting with a single-crystal diamond tool. In the present work, special Ni-alloy plated molds are applied to mold glass lenses. It is possible to mold a diffractive optical element (DOE) made of glass with special Ni-alloy plated molds. These molds have high-temperature strength sufficient to mold at 500℃ and can be applied to molds for high refractive index glass lenses.
2008-11-21