摘要:
Ceramics comprising (i) at least one of Nb2O5 or Ta2O5 and (ii) at least two of (a) Al2O3, (b) Y2O3, or (c) at least one of ZrO2 or HfO2. Embodiments of ceramics according to the present invention can be made, formed as, or converted into optical waveguides, glass beads, articles (e.g., plates), fibers, particles (e.g., abrasive particles), and thin coatings.
摘要翻译:陶瓷包括(i)Nb 2 O 5 O 5或Ta 2 O 5 5中的至少一种和(ii) (a)Al 2 O 3 3,(b)Y 2 O 3 3中的至少两个或(a) c)ZrO 2 2或HfO 2 2中的至少一种。 根据本发明的陶瓷的实施例可以由玻璃珠,制品(例如板),纤维,颗粒(例如磨料颗粒)和薄涂层制成或形成光波导。
摘要:
An optical glass which has an internal transmittance to a light having a wavelength of 400 nm being at least 90% as calculated in a thickness of 1 mm and which contains at least 25 mol % of B2O3 and from 0.1 to 20 mol % of TeO2. The above optical glass.which contains La2O3. The above optical glass wherein the glass transition point ≦650° C. and the refractive index at 633 nm ≧1.70. A process for producing an optical element made of the above optical glass, which comprises dropping the optical glass in a molten state from a flow outlet of a flow out pipe made of a platinum alloy to form a preform and subjecting it to precision press-molding.
摘要翻译:对于波长为400nm的光具有内部透射率的光学玻璃,其厚度为1mm计算为至少90%,并且含有至少25mol%的B 2 O 2, 3〜3%和0.1〜20%(摩尔)的TeO 2。 上述含有La 2 O 3 3的光学玻璃。 上述玻璃化转变点<= 650℃,折射率在633nm> = 1.70的光学玻璃。 一种由上述光学玻璃制成的光学元件的制造方法,其特征在于,将来自铂合金的流出管的流出口的熔融状态的光学玻璃落下,形成预成型体,并进行精密的加压成型 。
摘要:
An optical glass whose refractive index is high and whose coloring is decreased comprising, by weight %, 2 to 45% of B2O3, 0 to 30% of SiO2 provided that the content of B2O3>the content of SiO2, 10 to 50% of La2O3, 0 to 30% of TiO2, 0 to 15% of ZnO, 0 to 15% of ZrO2, 0 to 35% of Nb2O5, 0 to 35% of BaO, 0 to 5% of SrO, 0% or more but less than 8% of CaO, 0% or more but less than 13% of Mgo, provided that the total content of BaO, SrO, CaO and MgO is 0 to 40%, 0 to 20% of Gd2O3, 0 to 15% of Y2O3, 0 to 18% of Ta2O5, 0% or more but less than 0.5% of WO3, 0% or more but less than 1.5% of a total of Na2O, K2O and Li2O, 0 to 10% of GeO2, 0 to 20% of Bi2O3, 0 to 10% of Yb2O3, 0 to 10% of Al2O3, 0% or more but less than 2% of Sb2O3 and 0 to 1% of SnO2.
摘要翻译:一种折射率高且着色性降低的光学玻璃,其包含按重量%计的B 2 O 3 3的2%〜45%,SiO 2的0〜30% SUB> 2 SUB>,只要B 2 O 3的含量 5%,0%以上但小于0.5%的WO 3,0%以上但小于1.5%的Na 2 N 2, O 2,K 2 O和Li 2 O,0〜10%的GeO 2,0〜20%的Bi 2, 0〜10%的Yb 2 O 3,0〜10%的Al 2 O 3,以及0〜10%的Al 2 O 3 > 0-3%,0%以上但小于2%的Sb 2 O 3 3和0〜1%的SnO 2 < / SUB>。
摘要:
Provided is an optical glass having high-refractivity low-dispersion properties, having a low glass transition temperature and having the property of being softened at a low temperature so that a preform therefrom is precision press-moldable, and the optical glass comprises, as essential components, B2O3, La2O3, Gd2O3 and ZnO and has a refractive index (nd) of over 1.86, an Abbe's number (νd) of less than 35 and a glass transition temperature (Tg) of 630° C. or lower.
摘要翻译:本发明提供具有低折射率低分散性的光学玻璃,其玻璃化转变温度低,具有在低温下软化的性质,使得其预成型体具有精密的可压模成型性,光学玻璃作为必要的 组分,B 2 O 3,La 2 O 3,Gd 2 O 3,N 2 O 3, 3和ZnO的折射率(nd)超过1.86,阿贝数(nud)小于35,玻璃化转变温度(Tg)为630℃以下。
摘要:
Ceramics comprising (i) at least one of Nb2O5 or Ta2O5 and (ii) at least two of (a) Al2O3, (b) REO, or (c) at least one of ZrO2 or HfO2. Embodiments of ceramics according to the present invention can be made, formed as, or converted into optical waveguides, glass beads, articles (e.g., plates), fibers, particles (e.g., abrasive particles), and thin coatings.
摘要翻译:陶瓷,其包含(i)Nb 2 O 5或Ta 2 O 5中的至少一种和(ii)(a)Al 2 O 3,(b)REO或(c)ZrO 2或HfO 2中的至少一种中的至少一种。 根据本发明的陶瓷的实施例可以由玻璃珠,制品(例如板),纤维,颗粒(例如磨料颗粒)和薄涂层制成或形成光波导。
摘要:
An optical glass consisting basically of a B.sub.2 O.sub.3 -La.sub.2 O.sub.3 - ZrO.sub.2 -Nb.sub.2 O.sub.5 -PbO-BaO (and/or ZnO) system is free from a poisonous CdO or ThO.sub.2 component and has an excellent light transmission property in a transition region from an ultraviolet portion to a visible portion as compared with conventional optical glasses having the same optical properties.
摘要:
THIS INVENTION RELATES TO THE OPTICAL GLASS OF HIGH REFRACTION AND LOW DISPERSION HAVING A BASIC COMPOSITION IN THE RANGE OF B2O3 28-42%, Y2O3 2-25%, LA2O3 5-55%, THO2 2-45% OF WEIGHT RATIO. IN THE ATTACHED DRAWINGS, FIGS. 1, 2,3,4 AND 5 ARE TRIANGULAR DIAGRAMS SHOWING THE STABLE REGION OF GLASS FORMATION IN THE COMPOSITION
B2O3-Y2O3-LA2O3-THO2
FOUR COMPONENT SERIES. FIGS. 6,7,8 AND 9 ARE TRIANGULAR DIAGRAMS SHOWING THE STABLE REGION OF GLASS FORMATION IN THE COMPOSITION RATIOS OF THE B2O3-Y2O3-LA2O3-THO2-BAO FIVE COMPONENT SERIES. FIG. 10 IS AN ND-VD DIAGRAM SHOWING THE OPTICAL VALUE OF SOME EXAMPLES IN THE TABLES.