Wednesday, February 16, 2011

Design and Construction of the DA14/2.8 - Leitz Lens Patent, Schott Glass (Not Hoya's)..

Someone at the has discovered that the Pentax DA14/2.8 lens (designed by: Mr. Hirakawa, Jun / 平川 纯) is adopting a Leitz LAK9 lens (element) patent and actually using Schott glass material, but not Hoya's own:-


Quite Interesting.. :-)

Further Technical References:-

Schott LAK9 General Technical Information

Schott LAK9 Refractive Indices and Spectra Response


The Very Different Fates of Two ex-AOC Top Optical Engineers

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