Akamon Management Review
Online ISSN : 1347-4448
Print ISSN : 1348-5504
ISSN-L : 1347-4448
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Volume 4, Issue 8
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Research Note
  • Product development and competitive advantage in materials used in high refractive index eyeglass lenses
    Mitsui Chemicals “MR-6”
    Junichi Tomita
    2005 Volume 4 Issue 8 Pages 399-416
    Published: August 25, 2005
    Released on J-STAGE: March 12, 2018
    DOIhttps://doi.org/10.14955/amr.040801
    JOURNAL FREE ACCESS
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    MR-6 is the material used for high refractive index glass lenses and was introduced by Mitsui Chemical in 1987. MR-6 managed to spur the popularity of plastic lenses in Japan. Even in markets such as Europe and the United States, where high refractive index lenses grew popular at a later date, follow-up products have gained market share and a competitive edge. Underpinning such successes is (1) the strategic effort to build market-entry barriers through the continual release of follow-up products, (2) the formulation of patent and switching-cost networks, and (3) product development activities such as the creation of new material concepts, close collaboration with users, and the accumulation of assessment technologies afforded by such collaboration.

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