Compositions: ceramic – Ceramic compositions – Glass compositions – compositions containing glass other than...
Patent
1992-09-30
1994-11-22
Green, Anthony
Compositions: ceramic
Ceramic compositions
Glass compositions, compositions containing glass other than...
501 53, 501 60, 501 63, 501 64, 501 69, 501 70, 501 72, C03C 3076
Patent
active
053669398
ABSTRACT:
A gradient index optical element for use in optical lens such as a camera or microscope is disclosed. The optical element comprises at least one of first metal dopants selected from La, Zr, Sn, In, Y, Ge, Zn, Ba, Ca, As, Sr, Ga and Gd distributed in solvent with a slope, and at least one of second metal dopants selected from Nb, Ta, Ti, Bi, Pb, Sb, Zr, Sn, In, Y and Tl, which is distributed equally in the solvent so as to satisfy following equation as absolute amount;
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Fukuoka Morinao
Kurasawa Yuko
Noda Satoshi
Adams Bruce L.
Green Anthony
Olympus Optical Company Limited
Wilks Van C.
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