US Patent 7528083 Optical glass
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Patent Inventor Names
Koji Shimizu0
Susumu Uehara0
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Patent abstract
An optical glass having a refractive index (nd) within a range from 1.825 to 1.870, an Abbe number (ν d) within a range from 22 to less than 27, a transformation temperature (Tg) within a range from 530° C. to 585° C. and an mean coefficient of linear thermal expansion (α) within a range from 80×10−7° C.−1 to 103×10−7° C.−1, comprising SiO2, TiO2, Nb2O5 and Li2O and being substantially free of a Pb compound.
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US Patent 07528083 Optical glass US Patent 7528083 Optical glass
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Patent Number
075280830
Patent Number
75280830
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Patent Jurisdiction
Patent Number
075280830
Date of Patent
May 5, 2009
0Patent Application Number
108594350
Date Filed
June 2, 2004
0Official Website
Patent Primary Examiner
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US Patent 07528083 Optical glass
Infobox
Is a
Patent jurisdiction
Patent number
07528083
Date of patent
May 5, 2009
Patent application number
10859435
Date Filed
June 2, 2004
Patent primary examiner
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