Translucent ceramic and method for manufacturing the same,...

Details Translucent ceramic and method for manufacturing the same,... Translucent ceramic and method for manufacturing the same,...

2007-04-30

2009-10-20

Group, Karl E (Department: 1793)

Compositions: ceramic

Ceramic compositions

Titanate, zirconate, stannate, niobate, or tantalate or...

C501S134000, C501S136000, C501S137000, C501S139000, C385S130000, C385S131000, C423S594160

Reexamination Certificate

active

07605103

ABSTRACT:
A translucent ceramic containing a main component represented by Ba{MxB1yB2z}vOw(wherein B1 is a trivalent metallic element, B2 is a quintavalent metallic element, M is at least one selected from the group consisting of Ti, Sn, Zr and Hf, x+y+z=1, 0≦x≦0.45, 1.00≦z/y≦1.04, 1.00≦v≦1.05, and w is a positive number required to maintain electroneutrality), or Ba{Mx(B1sB31-s)yB2z}vOw(wherein B3 is a bivalent metallic element, 0≦x≦0.9, 1.00≦z/y≦2.40, 0<s<1, and B1, B2, x+y Z and w are the same as those in the other formula). The translucent ceramic has a high refractive index, a high anomalous dispersion and excellent optical properties. The translucent ceramic is useful, for instance, as a material of an objective lens in an optical pickup.

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