US Patent 7674737 Optical medium, an optical lens and a prism
Patent 7674737 was granted and assigned to Nippon Telegraph and Telephone on March, 2010 by the United States Patent and Trademark Office.
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Patent abstract
An optical medium having a high refractive index without anisotropy and a wide transmission wavelength is obtained. The cubic crystal material is αβO3, where α is at least one of K, Ba, Sr, Ca, and β is at least one of Ta, Ti. Optimally, the cubic crystal material is KTa1-xNbxO3, where composition x is 0≦x≦0.35. This composition enables to raise refractive index while its phase transition temperature is below a room temperature.
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Patent Inventor Names
Kazuo Fujiura0
Kouichirou Nakamura0
Masahiro Sasaura0
Tadayuki Imai0
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US Patent 07674737 Optical medium, an optical lens and a prism US Patent 7674737 Optical medium, an optical lens and a prism
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Patent Number
076747370
Patent Number
76747370
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Official Website
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Infobox
Is a
Current Assignee
Patent Jurisdiction
Patent Number
076747370
Date of Patent
March 9, 2010
0Patent Application Number
105994520
Date Filed
June 22, 2005
0Official Website
Patent Primary Examiner
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US Patent 07674737 Optical medium, an optical lens and a prism
Infobox
Is a
Current assignee
Patent jurisdiction
Patent number
07674737
Date of patent
March 9, 2010
Patent application number
10599452
Date Filed
June 22, 2005
Patent primary examiner
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