Microstructures and Optical Properties of Scales of Butterfly Wings

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  • TABATA Hiroshi
    Social and Advanced Research Laboratory, Nissan Motor Co., Ltd., 1, Natsushima–cho, Yokosuka, 237 Japan
  • KUMAZAWA Kinya
    Social and Advanced Research Laboratory, Nissan Motor Co., Ltd., 1, Natsushima–cho, Yokosuka, 237 Japan
  • FUNAKAWA Masami
    Social and Advanced Research Laboratory, Nissan Motor Co., Ltd., 1, Natsushima–cho, Yokosuka, 237 Japan
  • TAKIMOTO Jun–ichi
    Social and Advanced Research Laboratory, Nissan Motor Co., Ltd., 1, Natsushima–cho, Yokosuka, 237 Japan
  • AKIMOTO Makio
    Department of Pharmacology, Nippon Medical School, 1–1–5, Sendagi, Bunkyo–ku, Tokyo, 113 Japan

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抄録

This paper describes the mechanism generating the beautiful wing colors of various male butterflies and the relationship between the wing material and the color appearance. The microstructure of the scales covering the upper surface of the wings was analyzed with the aid of a scanning electron microscope. The basic mechanism of color generation of structurally colored scales is determined for the first time in accordance with the theory of optical interference in thin film layers using a model of wing scales. Optical properties were found in relation to the three-dimensional spectral reflectance of the samples, and differences were observed between the brightness perceived in subjective evaluations and calculated values based on the reflective spectra of the structurally colored wings. The results of this study suggest that the microroughness of the upper wing surface may influence the perceived gloss of structurally colored wings.

収録刊行物

  • Optical Review

    Optical Review 3 (2), 139-145, 1996

    公益社団法人 応用物理学会分科会 日本光学会

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