Lead free optical glasses of the hard flint position

Lead free optical glasses of the hard flint position

  • CN 101,041,553 A
  • Filed: 03/22/2007
  • Published: 09/26/2007
  • Est. Priority Date: 03/22/2006
  • Status: Active Grant
First Claim
Patent Images

1. opticglass is characterized in that it comprises following composition (the weight % that calculates with oxide compound):

  • ??P 2O 5 ??14 ??- ??35 ??Nb 2O 5 ??45 ??- ??50 ??Li 2O ??0 ??- ??4 ??Na 2O ??0 ??- ??4 ??K 2O ??0.5 ??- ??5 ??BaO ??17 ??- ??23 ??ZnO ??0.1 ??- ??5 ??TiO 2 ??1 ??- ??<

    5 ??ZrO 2 ??0 ??- ??6 ??Sb 2O 3 ??≥

    ??0.1

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