公开(公告)号：US20130178354A1

公开(公告)日：2013-07-11

申请号：US13784860

申请日：2013-03-05

Applicant: HOYA CORPORATION

Inventor： Tomoaki NEGISHI ,  Xuelu ZOU

IPC: C03C3/068 ,  C03C4/02

CPC classification number: C03C3/068 ,  C03C4/02

Abstract: An optical glass that is an oxide glass having a very high refractive index in spite of its low-dispersion property, having excellent glass stability and having less susceptibility to coloring.

Abstract translation: 作为折射率非常高的氧化物玻璃的光学玻璃，尽管其分散性低，玻璃稳定性好，着色敏感性低。

公开(公告)号：US20140302346A1

公开(公告)日：2014-10-09

申请号：US14306675

申请日：2014-06-17

Applicant: HOYA CORPORATION

Inventor： Kazuo TACHIWANA ,  Yoichi HACHITANI ,  Xuelu ZOU ,  Mikio IKENISHI ,  Kinobu OSAKABE

IPC: G11B5/735 ,  C03C3/087

CPC classification number: G11B5/735 ,  C03C3/083 ,  C03C3/087 ,  C03C3/095 ,  C03C3/097 ,  C03C15/00 ,  C03C19/00 ,  C03C21/002 ,  C03C23/0075 ,  G11B5/7315 ,  G11B5/82 ,  G11B5/8404 ,  Y10T428/24273 ,  Y10T428/315

Abstract: According to one aspect of the present invention, provided is glass for use in substrate for information recording medium, which comprises, denoted as molar percentages, a total of 70 to 85 percent of SiO2 and Al2O3, where SiO2 content is equal to or greater than 50 percent and Al2O3 content is equal to or greater than 3 percent; a total of equal to or greater than 10 percent of Li2O, Na2O and K2O; a total of 1 to 6 percent of CaO and MgO, where CaO content is greater than MgO content; a total of greater than 0 percent but equal to or lower than 4 percent of ZrO2, HfO2, Nb2O5, Ta2O5, La2O3 Y2O3 and TiO2; with the molar ratio of the total content of Li2O, Na2O and K2O to the total content of SiO2, Al2O3, ZrO2, HfO2, Nb2O5, Ta2O5, La2O3, Y2O3 and TiO2 ((Li2O+Na2O+K2O)/(SiO2+Al2O3+ZrO2+HfO2+Nb2O5+Ta2O5+La2O3+Y2O3+TiO2)) being equal to or less than 0.28. Further provided are the substrate for information recording medium, information recording medium and their manufacturing methods according to the present invention.

Abstract translation: 根据本发明的一个方面，提供了一种用于信息记录介质的基板的玻璃，其包括以摩尔百分数表示的总和为70〜85％的SiO 2和Al 2 O 3，其中SiO 2含量等于或大于 50％，Al2O3含量等于或大于3％; 总计等于或大于10％的Li2O，Na2O和K2O; CaO和MgO的总量为1〜6％，其中CaO含量大于MgO含量; 总共大于0％但等于或低于ZrO2，HfO2，Nb2O5，Ta2O5，La2O3 Y2O3和TiO2的4％; 其中Li2O，Na2O和K2O的总含量与SiO2，Al2O3，ZrO2，HfO2，Nb2O5，Ta2O5，La2O3，Y2O3和TiO2（（Li2O + Na2O + K2O）/（SiO2 + Al2O3 + ZrO 2 + HfO 2 + Nb 2 O 5 + Ta 2 O 5 + La 2 O 3 + Y 2 O 3 + TiO 2））等于或小于0.28。 还提供了根据本发明的用于信息记录介质的基板，信息记录介质及其制造方法。

公开(公告)号：US20130270493A1

公开(公告)日：2013-10-17

申请号：US13909122

申请日：2013-06-04

Applicant: HOYA CORPORATION

Inventor： Xuelu ZOU ,  Yoshio NOJIMA ,  Hiroki TAKAZAWA

IPC: C03C3/066 ,  C03B11/00 ,  C03B11/12 ,  C03C3/064

CPC classification number: C03C3/097 ,  C03B11/00 ,  C03B11/122 ,  C03C3/062 ,  C03C3/064 ,  C03C3/066 ,  G02B1/00

Abstract: An optical glass comprising, by mass %, 12 to 40% of SiO2, 15% or more but less than 42% of Nb2O5, 2% or more but less than 18% of TiO2, (provided that Nb2O5/TiO2 is over 0.6), 0.1 to 20% of Li2O, 0.1 to 15% of Na2O, and 0.1 to 25% of K2O, and having an Abbe's number νd of 20 to 30, a ΔPg,F of 0.016 or less and a liquidus temperature of 1,200° C. or lower.

Abstract translation: 一种光学玻璃，其以质量％计含有SiO 2的12〜40％，Nb 2 O 5的15％以上且42％以下，TiO 2的2％以上且18％以下（条件是Nb 2 O 5 / TiO 2大于0.6） ，0.1〜20％的Li 2 O，0.1〜15％的Na 2 O和0.1〜25％的K 2 O，阿贝数nud为20〜30，ΔPg，F为0.016以下，液相线温度为1200℃ 或更低。

公开(公告)号：US20130288878A1

公开(公告)日：2013-10-31

申请号：US13924814

申请日：2013-06-24

Applicant: HOYA CORPORATION

Inventor： Tomoaki NEGISHI ,  Xuelu ZOU

IPC: C03C4/02 ,  C03C3/068

CPC classification number: C03C4/02 ,  C03B17/06 ,  C03B17/061 ,  C03B19/02 ,  C03C3/068 ,  Y02P40/57

Abstract: A high-refractivity low-dispersion optical glass that can be stably supplied and has excellent glass stability and that has coloring reduced, composed of in mass %, 5 to 32% of total of SiO2 and B2O2, 45 to 65% of total of La2O2, Gd2O2 and Y2O2, 0.5 to 10% of ZnO, 1 to 20% of total of TiO2 and Nb2O5, and optionally other components. The optical glass has a refractive index nd of 1.89 to 2.0, an Abbe's number νd of 32 to 38 and a coloring degree λ70 of 430 nm or less.

Abstract translation: 高折射率低分散型光学玻璃，其可以稳定地供给并且具有优异的玻璃稳定性，并且具有降低的着色，以质量％计，总计为5〜32％的SiO 2和B 2 O 2，45〜65％的La 2 O 2 ，Gd 2 O 2和Y 2 O 2，0.5〜10％的ZnO，1〜20％的TiO 2和Nb 2 O 5，以及任选的其它成分。 光学玻璃的折射率nd为1.89〜2.0，阿贝数nud为32〜38，着色度λ70为430nm以下。