24.
    发明专利
    未知

    公开(公告)号:DE69300205D1

    公开(公告)日:1995-07-27

    申请号:DE69300205

    申请日:1993-04-01

    Applicant: CORNING INC

    Abstract: This invention relates to glasses exhibiting refractive indices higher than 1.880, Abbe numbers of at least 29, densities lower than 4.1, good chemical durability and stability against devitrification, and an integrated transmission over the range of 380-800 nm at a thickness of 10 mm greater than 79%, the glasses consisting essentially, expressed in terms of weight percent on the oxide basis, of

    26.
    发明专利
    未知

    公开(公告)号:DE570687T1

    公开(公告)日:1995-04-06

    申请号:DE93105390

    申请日:1993-04-01

    Applicant: CORNING INC

    Abstract: This invention relates to glasses exhibiting refractive indices higher than 1.880, Abbe numbers of at least 29, densities lower than 4.1, good chemical durability and stability against devitrification, and an integrated transmission over the range of 380-800 nm at a thickness of 10 mm greater than 79%, the glasses consisting essentially, expressed in terms of weight percent on the oxide basis, of

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