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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
Inventor： GRATEAU LUC , LABORDE PASCALE , PRASSAS MICHEL
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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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
Inventor： GRATEAU LUC , LABORDE PASCALE , PRASSAS MICHEL
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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公开(公告)号：CA2066495A1
公开(公告)日：1992-12-18
申请号：CA2066495
申请日：1992-04-21
Applicant: CORNING INC
Inventor： MORGAN DAVID W , PRASSAS MICHEL
Abstract: This invention relates to the production of glasses exhibiting a refractive index between about 1.66-1.81, a softening point between about 625.degree.-675.degree.C, a strain point between about 455.degree.-490.degree.C, a linear coefficient of thermal expansion (25.degree.-300.degree.C) between about 53-65x10-7/.degree.C, and goodchemical durability which consist essentially, in weight percent, of: SiO2 24-42 Li2O 0.2 Li2O+Na2O+K2O 0-3.5 Al2O3 3-7.5 Na2O 0-2 ZrO2 0-2.5 B2O3 2-7.5 K2O 0-3 TiO2 0-8 PbO 35-57 La2O3 0-8 La2O3+ZrO2+TiO2 4 12
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公开(公告)号：HK62992A
公开(公告)日：1992-08-28
申请号：HK62992
申请日：1992-08-20
Applicant: CORNING INC
Inventor： BOUDOT JEAN EMILE , PRASSAS MICHEL , MAZEAU JEAN-PIERRE
IPC: C03C3/068
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