Optical glass, preform for precision press molding, optical element, and method for manufacturing optical element

Optical glass, preform for precision press molding, optical element, and method for manufacturing optical element

  • CN 101,397,188 A
  • Filed: 09/27/2008
  • Published: 04/01/2009
  • Est. Priority Date: 09/27/2007
  • Status: Active Application
First Claim
Patent Images

1. an opticglass is characterized in that, refractive index n d is more than 1.70, and Abbe number vd is more than 50, and when representing with mole %, described opticglass comprises:

  • B 2O 3??40~

    75%



    SiO 2Surpass 0%, and be below 15%;

    Li 2O??1~

    10%



    ZnO??0~

    15%



    La 2O 3?5~

    22%



    Gd 2O 3?3~

    20%



    Y 2O 3More than 0%, and less than 1%;

    ZrO 2??0~

    10%



    MgO???0~

    5%



    CaO???0~

    5%



    SrO???0~

    5%



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