摘要:
The invention relates to a lead silicate glass, to the use thereof for the production of secondary electron multipliers, and to a process for setting a reduced surface resistance of a lead silicate glass of this type. The lead silicate glass has the following composition (in % by weight): SiO2 15-35, PbO 35-55, Bi2O3>20-29, BaO 0-10, Cs2O 0-10, BaO+Cs2O 2-13, CaO 0-10, SrO 0-10, CaO+SrO+BaO 0-10, and up to 1% by weight of conventional fining agents. The surface resistance of the lead silicate glass after reduction in a hydrogen atmosphere is from 0.1 to 60 M&OHgr;/sq.
摘要翻译:本发明涉及一种硅酸铅玻璃及其制备二次电子倍增器的用途,以及一种用于设定这种类型的硅酸铅玻璃的降低表面电阻的方法。 硅酸铅玻璃具有以下组成(重量%):SiO 2 15-35,PbO 35-55,Bi 2 O 3> 20-29,BaO 0-10,Cs 2 O 0-10,BaO + Cs 2 O 2-13,CaO 0 -10,SrO 0-10,CaO + SrO + BaO 0-10,和至多1重量%的常规澄清剂。 在氢气氛中还原后,硅酸铅玻璃的表面电阻为0.1〜60MOMEGA / sq。
摘要:
An optical glass for polarizing optical system having a photoelastic constant C in the range of −0.2 to +0.5 [10−8 cm2/N] with respect to a wavelength of 633 nm, the optical glass having the following composition (1): composition (1): when represented in terms of wt. % of oxides: SiO2: 17.0-27.0% (35.5-57.0 mol %) Li2O+Na2O+K2O: 0.5-5.0% (0.7-20.0 mol %) PbO: 72.0-75.0% (39.1-45.0 mol %) As2O3+Sb2O3: 0.1-3.0% (0.1-2.0 mol %).
摘要:
Zinc-containing optical glass materials with a refractive index nd between 1.52 and 1.66, an Abbe number vd of between 35 and 54 and a composition (in % by weight based on oxide) of: SiO2 38-58, ZnO 0.3-42, PbO 0-
摘要翻译:折射率nd在1.52和1.66之间的含锌光学玻璃材料,阿贝数vd在35和54之间,组成(以氧化物重量%计):SiO 2 38-58,ZnO 0.3-42,PbO 0〜30,ZnO + PbO 20-55,Li 2 O 0〜3,NA 2 O 0-14,K 2 O 12〜12,Li 2 O + Na 2 O + K 2 O 2 = F 0-3,MgO 0-6,CaO 0〜 <5,SrO 0-6,BaO 0- <0.9,B 2 O 3 0- <1,AL 2 O 3 0- <1.5和ZRO 2 0-,以及(如果合适的话)常规量的澄清剂。
摘要:
An optical glass comprises the following composition in mass percent of: SiO2 18-29%; PbO 68-78%; and TeO2 0.1-3.5%; wherein the glass has optical constants which are a refractive index (nd) having a range of 1.75 to 1.87 and an Abbe number (&ngr;b) having a range of 21 to 28; and a wavelength of a light transmitted through the glass having a thickness of 10±0.1 mm at a transmittance of 80% by including a reflection loss, is not more than 420 nm.
摘要:
The present invention provides a method for inducing a refractive index change in a lead silicate glass material comprising: providing a lead silicate glass material; and irradiating the lead silicate glass material to increase the index of refraction of said lead silicate glass material. The present invention also provides a photo-induced lead silicate glass grating.