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Lead and arsenic free optical lanthanum borate glass

  • US 7,638,450 B2
  • Filed: 04/27/2006
  • Issued: 12/29/2009
  • Est. Priority Date: 04/29/2005
  • Status: Expired due to Fees
First Claim
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1. A lead-free, fluorine-free and arsenic-free optical glass having a refractive index nd of 1.75≦

  • nd

    1.83 and an Abbe number vd of 34≦

    vd

    44, said glass comprising, in percent by weight based on oxide content;

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