Optical glass

Optical glass

  • CN 101,397,189 A
  • Filed: 09/24/2008
  • Published: 04/01/2009
  • Est. Priority Date: 09/25/2007
  • Status: Active Application
First Claim
Patent Images

1. an opticglass is characterized in that, the absolute value of the product α

  • * β

    of the photoelastic constant β

    when-30 ℃



    + 70 ℃

    average coefficient of linear expansion α and

    wavelength 546.1nm is 130 * 10 -12

    -1* nm * cm -1* Pa -1Below, wherein, the quality % in the oxide compound benchmark contains SiO 2, B 2O 3, La 2O 3Surpass 0%, and contain ZrO 2+ Nb 2O 5Surpass 13% and less than 20%, ZnO less than 2.0%.

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