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US 2004/0176235 A1Published application
Ceramic material and optical device including the same
OwnerAkihiko Sakamotoinventor
Life of this patent
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Abstract
A ceramic material has a thermal expansion coefficient of 50×10−7/° C. or less, an absolute value of the difference between the relative refractive indexes of silica glass and the ceramic material of 0.2 or less at a wavelength of 1550 nm, and a light attenuation coefficient of 0.3 dB/cm or more.
Claims6
A ceramic material having a thermal expansion coefficient of less than 50×10−7/° C., an absolute value of the difference between the relative refractive indexes of silica glass and the ceramic material of 0.2 or less at a wavelength of 1550 nm, and a light attenuation coefficient of 0.3 dB/cm or more.
Dependencies are inferred from the claim text.