摘要:
A polarizing glass comprising geometrically anisotropic particles dispersed in an oriented manner in at least the surface of a glass base body. The glass base body is denoted by the weight percentages of 50-65 percent SiO2, 15-22 percent B2O3, 0-4 percent Al2O3, 2-8 percent ZrO2, 6 percent
摘要:
A fluoride glass comprising AlF.sub.3, ZrF.sub.4 and/or HfF.sub.4, and at least one compound selected from CaF.sub.2, SrF.sub.2 and BaF.sub.2, and a fluoride glass comprising these components and at least one additional component selected from MgF.sub.2, YF.sub.3, NaF and other like compounds have the advantages that there hardly occurs crystallization in the production thereof, and that they are excellent in chemical durability, high in surface hardness, so that they can ideally serve as glass to be used for low loss optical fiber, infrared optical fiber for thermometer, infrared laser window, etc.
摘要:
A near infrared absorption filter for color television cameras, comprising(a) a base glass comprising, in % by weight based on the weight of the base glass, 50-78% P.sub.2 O.sub.5, 10-50% BaO, 0-7% Al.sub.2 O.sub.3, 0-6% B.sub.2 O.sub.3, 0-5% SiO.sub.2, 0-8% Li.sub.2 O, 0-15% Na.sub.2 O, 0-18% K.sub.2 O, 0-5% MgO, 0-10% CaO, 0-15% SrO, 0-10% ZnO, and 0-10% PbO, and(b) about 0.5 to about 2.5% by weight of CuO based on the weight of the base glass.
摘要:
A yellow colored filter glass comprising(a) 100 parts by weight of a base glass consisting of, by weight, 65 to 85% of P.sub.2 O.sub.5 ; 3 to 10% of Al.sub.2 O.sub.3 ; 0 to 18% of MgO, 0 to 25% of CaO, 0 to 30% of ZnO, with the total proportion of MgO + CaO + ZnO being 10 to 30%; 0 to 15% of SrO and/or BaO; 0 to 10% of PbO; 0 to 10% of at least one of Li.sub.2 O, Na.sub.2 O and K.sub.2 O; and 0 to 5% of B.sub.2 O.sub.3, ZrO.sub.2, TiO.sub.2 or La.sub.2 O.sub.3 ;(b) 0.01 to 1.0 part by weight of NiO; and(c) 0 to 2.0 parts by weight of CuO.
摘要:
This invention provides an anomalous dispersion glass exhibiting an .eta. d value of 1.54-1.71 and an.nu. d value of 55-30, and the anomaly of a partially dispersing property in the long wave length region. The anomalous dispersion glass contains B.sub.2 O.sub.3 45-70 mol.%; Pb0 5-30 mol.%; Na.sub.2 O 1-15 mol.%; SiO.sub.2 0-10 mol.%; Al.sub.2 O.sub.3 5-25 mol.%; one or more of CaO, BaO, MgO and CdO 0-16 mol.%, and one of TiO.sub.2, ZrO.sub.2, Sb.sub.2 O.sub.3, Wo.sub.3 and Tl.sub.2 O 0-3 mol.%. Fluorine may be present in an amount such that the F/O ion ratio in the resulting glass lies in the range of 0-0.35.
摘要:
A reversible light-sensitive glass comprising 100 parts of a base glass composition consisting, in weight percent, of 48 to 62% SiO.sub.2, 15 to 22% B.sub.2 O.sub.3, 0 to 7% Al.sub.2 O.sub.3, 0 to 10% ZrO.sub.2, 6
摘要翻译:一种可逆的感光玻璃,包括100份基础玻璃组合物,其重量百分比为48至62%的SiO 2,15至22%的B 2 O 3,0至7%的Al 2 O 3,0至10%的ZrO 2,6
摘要:
A reversible light-sensitive glass, e.g., for eyeglasses, comprising 100 parts of a base glass composition consisting, in weight percent, of 48 to 62% SiO.sub.2, 15 to 22% B.sub.2 O.sub.3, 0 to 11% Al.sub.2 O.sub.3, 0 to 10% ZrO.sub.2, 6
摘要翻译:一种可逆的感光玻璃,例如用于眼镜,包括100份基础玻璃组合物,其重量百分比为48至62%的SiO 2,15至22%的B 2 O 3,0至11%的Al 2 O 3,0至10%的ZrO 2 ,6