G - Physics
02
B
G02B 1/00 (2006.01) G02B 3/00 (2006.01)
Patent
CA 2419684
The planar lens of the invention having a flat glass substrate, in which a refractive index distribution is formed by diffusing a refractive index-increasing component into the flat glass substrate in a substantially hemispherical form or semicylinder form, wherein the refractive index-increasing component is silver, and the flat glass substrate comprises Li as an alkali metal that is subject to an ion exchange with the silver.
Sakaguchi Koichi
Tsuda Masahiro
Yoshii Shigekazu
Nippon Sheet Glass Co. Ltd.
Riches Mckenzie & Herbert Llp
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