OPTICAL GLASS AND OPTICAL ELEMENT

PROBLEM TO BE SOLVED: To provide optical glass with devitrification resistance and highly transparent to visible light even while having a lower Abbe number ( ) and a higher refractive index (n), a preform for precision press forming and an optical element.SOLUTION: This optical glass contains, in m...

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Bibliographic Details
Main Authors OGINO MICHIKO, TSUCHIBUCHI NANA
Format Patent
LanguageEnglish
Published 17.05.2012
Subjects
CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS
CHEMISTRY
GLASS
JOINING GLASS TO GLASS OR OTHER MATERIALS
METALLURGY
MINERAL OR SLAG WOOL
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS
SURFACE TREATMENT OF GLASS
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Summary:PROBLEM TO BE SOLVED: To provide optical glass with devitrification resistance and highly transparent to visible light even while having a lower Abbe number ( ) and a higher refractive index (n), a preform for precision press forming and an optical element.SOLUTION: This optical glass contains, in mass%, 5.0-40.0% POcomponent and 30.0-70.0% NbOcomponent, and has a refractive index (n) of 1.80 or more. Also, the preform for precision press forming and the optical element comprise the optical glass.
Bibliography:Application Number: JP20100242299