公开(公告)号：EP1067101A3

公开(公告)日：2001-11-28

申请号：EP00114609.1

申请日：2000-07-07

申请人： Hoya Corporation

发明人： Zou, Xuelu

IPC分类号： C03C10/04 ,  C03B32/00 ,  G11B5/62

CPC分类号： C03B32/02 ,  C03C10/0045 ,  G11B5/8404 ,  Y10S428/90 ,  Y10T428/24355

摘要： Disclosed is a process for preparation of crystallized glass obtained by making a glass containing TiO 2 subjected to a phase separation step and a crystallization step, where the phase separation step has heat treatment of the glass at a temperature in a range from a temperature of the glass transition temperature Tg (Tg - 30 °C) to a temperature 60 °C higher than the glass transition temperature Tg (Tg + 60 °C). There are also disclosed a crystallized glass for information recording disk composed of the crystallized glass obtained by the preparation process, where a mean particle size of the crystal particles is in a range of equal to or less than 100 nm, or where a transparency at a wavelength of 600 nm is 40 % or higher; and an information recording disk, composed of the glass, having a polished surface with a surface roughness Ra (JIS B0601) in a range from 0.1 to 0.5 nm.

摘要翻译： 公开的是用于制备通过使含TiO 2的玻璃进行相分离步骤和一个结晶步骤，其中该相分离步骤具有玻璃的热处理在一个范围内的温度从玻璃的温度下得到的结晶化玻璃的方法 转变温度Tg（Tg-30℃）至比玻璃化转变温度Tg（Tg + 60℃）高60℃的温度。 还公开了一种用于信息记录盘的结晶玻璃，其由通过制备方法获得的结晶玻璃组成，其中晶体颗粒的平均粒径在等于或小于100nm的范围内， 600nm的波长为40％以上， 以及由玻璃构成的信息记录盘，其具有表面粗糙度Ra（JIS B0601）在0.1-0.5nm范围内的抛光表面。

公开(公告)号：EP1067102B1

公开(公告)日：2011-12-14

申请号：EP00114610.9

申请日：2000-07-07

申请人： HOYA CORPORATION

发明人： Zou, Xuelu

IPC分类号： C03C10/04 ,  G11B5/62

CPC分类号： G11B5/7315 ,  C03C10/0045 ,  G11B5/7325

公开(公告)号：EP1468973A3

公开(公告)日：2006-02-08

申请号：EP04009188.6

申请日：2004-04-19

申请人： HOYA CORPORATION

发明人： Fujiwara, Yasuhiro ,  Zou, Xuelu

IPC分类号： C03C3/16

CPC分类号： C03B40/04 ,  C03B7/12 ,  C03B11/12 ,  C03B2215/66 ,  C03B2215/69 ,  C03C3/16

摘要： The present invention relates to low-dispersion optical glass having a low glass-transition temperature suited to precision press molding, a press molding preform comprised of this glass, a method of manufacturing the same, an optical element, and a method of manufacturing the same. The optical glass comprises, given as molar percentages,28 to 50 percent of P 2 O 5 ; more than 20 percent but not more than 50 percent of BaO; 1 to 20 percent MgO; a sum of Li 2 O, Na 2 O, and K 2 O exceeding 3 percent (with 0 to 25 percent of Li 2 O, greater than or equal to 0 percent and less than 10 percent of Na 2 O, and 0 to 12 percent of K 2 O); more than 0 percent but not more than 15 percent of ZnO; 0 to 25 percent of B 2 O 3 ; 0 to 5 percent of Al 2 O 3 ; 0 to 8 percent of Gd 2 O 3 ; 0 to 20 percent of CaO; 0 to 15 percent of SrO; and 0 to 1 percent of Sb 2 O 3 ; with a sum of oxide contents of P, Ba, Mg, Li, Na, K, Zn, B, Al, Gd, Ca, Sr, and Sb being greater than or equal to 98 percent. The press molding preform is comprised of the optical glass. In the method of manufacturing a press molding preform, a glass melt gob of prescribed weight is separated from a glass melt flow, and the press molding preform comprised of the optical glass is formed with the prescribed weight. In the method of manufacturing an optical element, the press molding preform or the press molding preform manufactured by the above method is heated and precision press molded.

公开(公告)号：EP1493720A1

公开(公告)日：2005-01-05

申请号：EP04015296.9

申请日：2004-06-30

申请人： HOYA CORPORATION

发明人： Zou, Xuelu ,  Kasuga, Yoshiko ,  Fujiwara, Yasuhiro

IPC分类号： C03C3/21 ,  C03C3/16 ,  C03C3/062

CPC分类号： C03C3/21 ,  C03C3/062 ,  C03C3/16

摘要： Preforms for precision press molding made of optical glass, optical elements, and methods of manufacturing the same are provided. The preforms are suited to precision press molding having a broad range of dispersion characteristics, a low glass transition temperature, a low sag point, and good resistance to devitrification while containing no PbO. The optical element is obtained by precision press molding the preform. One example of the preform has a refractive index (nd) of greater than or equal to 1.7 and an Abbé number ( νd) of less than or equal to 32. The other example of the preform has an Abbé number ( νd) exceeding 32.

摘要翻译： 提供了由光学玻璃，光学元件及其制造方法制成的精密压制成型的预成型件。 预成型件适用于具有宽范围的分散特性，低玻璃化转变温度，低凹陷点以及良好的耐失透性同时不含PbO的精密压模成型。 光学元件通过精密压模成型而获得。 预成型件的一个示例具有大于或等于1.7的折射率（nd）和小于或等于32的Abbé数（vd）。预成型件的另一个实例具有超过32的Abbé数（vd）。

公开(公告)号：EP0941973A2

公开(公告)日：1999-09-15

申请号：EP99104949.5

申请日：1999-03-12

申请人： Hoya Corporation

发明人： Zou, Xuelu ,  Azegami, Kouji

IPC分类号： C03C10/08

CPC分类号： G11B5/7315 ,  C03C10/0027 ,  C03C10/0045 ,  C03C19/00 ,  C03C2204/08

摘要： Enclosed are crystallized glasses suitable for a substrate for an information recording medium such as a magnetic disc, optical disc, or optomagnetic disc, a substrate for information recording medium using such a crystallized glass substrate, and an information recording medium using such a substrate for information recording medium. The crystallized glasses are capable of providing a glass substrate having a high Young's modulus, as well as excellent mechanical strength, surface flatness, and heat resistance and having an excellent surface smoothness upon polishing. Glass substrate having an excellent surface smoothness using such a crystallized glass are also disclosed.

摘要翻译： 封闭的是适用于诸如磁盘，光盘或光磁盘的信息记录介质的基板的结晶玻璃，使用这种结晶玻璃基板的用于信息记录介质的基板，以及使用这种基板进行信息的信息记录介质 记录介质。 结晶化玻璃能够提供具有高杨氏模量的玻璃基板，以及优异的机械强度，表面平坦度和耐热性，并且在抛光时具有优异的表面平滑度。 还公开了使用这种结晶玻璃具有优异表面平滑度的玻璃基板。

公开(公告)号：EP1468973A2

公开(公告)日：2004-10-20

申请号：EP04009188.6

申请日：2004-04-19

申请人： HOYA CORPORATION

发明人： Fujiwara, Yasuhiro ,  Zou, Xuelu

IPC分类号： C03C3/16

CPC分类号： C03B40/04 ,  C03B7/12 ,  C03B11/12 ,  C03B2215/66 ,  C03B2215/69 ,  C03C3/16

摘要： The present invention relates to low-dispersion optical glass having a low glass-transition temperature suited to precision press molding, a press molding preform comprised of this glass, a method of manufacturing the same, an optical element, and a method of manufacturing the same. The optical glass comprises, given as molar percentages,28 to 50 percent of P 2 O 5 ; more than 20 percent but not more than 50 percent of BaO; 1 to 20 percent MgO; a sum of Li 2 O, Na 2 O, and K 2 O exceeding 3 percent (with 0 to 25 percent of Li 2 O, greater than or equal to 0 percent and less than 10 percent of Na 2 O, and 0 to 12 percent of K 2 O); more than 0 percent but not more than 15 percent of ZnO; 0 to 25 percent of B 2 O 3 ; 0 to 5 percent of Al 2 O 3 ; 0 to 8 percent of Gd 2 O 3 ; 0 to 20 percent of CaO; 0 to 15 percent of SrO; and 0 to 1 percent of Sb 2 O 3 ; with a sum of oxide contents of P, Ba, Mg, Li, Na, K, Zn, B, Al, Gd, Ca, Sr, and Sb being greater than or equal to 98 percent. The press molding preform is comprised of the optical glass. In the method of manufacturing a press molding preform, a glass melt gob of prescribed weight is separated from a glass melt flow, and the press molding preform comprised of the optical glass is formed with the prescribed weight. In the method of manufacturing an optical element, the press molding preform or the press molding preform manufactured by the above method is heated and precision press molded.

摘要翻译： 本发明涉及一种具有适合于精密压制成型，压制成型预型件包括在该玻璃制造的方法，光学元件的低玻璃化转变温度低分散光学玻璃，以及制造其的方法 ， 该光学玻璃包含，以摩尔百分比，28〜50％的P 2 O 5; 超过20％的BaO，但不超过50％; 为1〜20％的MgO; 的Li 2 O的总和的Na 2 O，和K 2 O超过3％（用0至25％的Li 2 O的，大于或等于0％的和Na 2 O的不到10％，和0至12 K 2 O）的百分比; 大于0％，但不超过15的ZnO百分比; 0〜25 B 2 O 3的百分数; 0〜5的Al 2 O 3个百分点; 0〜8的Gd 2 O 3个百分点; 0〜20的CaO的百分比; 0至15的SrO的百分比; 和0至1的Sb 2 O 3的百分比; 用的P，钡，镁，锂，钠，钾，锌，硼，铝，钆，钙，锶的氧化物含量，和Sb大于或等于98％的总和。 压制成型预型件是由光学玻璃构成。 在制造压制成型预型件的方法，规定重量的熔融玻璃块从熔融玻璃流中分离，并且所述的光学玻璃的压制成型预型件形成为与规定的权重。 在制造光学元件的方法中，通过上述方法制造的冲压成形预型体或压制成型预型件是

公开(公告)号：EP1067102A2

公开(公告)日：2001-01-10

申请号：EP00114610.9

申请日：2000-07-07

申请人： Hoya Corporation

发明人： Zou, Xuelu

IPC分类号： C03C10/04 ,  G11B5/62

CPC分类号： G11B5/7315 ,  C03C10/0045 ,  G11B5/7325

摘要： Provided is a substrate for information recording medium composed of such a crystallized glass as having high Young's modulus, strength and heat resistance, being excellent in surface smoothness, surface homogeneity and surface processability, as well as having a relatively low temperature of glass liquid phase and being capable of producing cheaply, and an information recording medium using this substrate.
The crystallized glass substrate for information recording medium comprising 35-65 mol% of SiO 2 , 5-25 mol% of Al 2 O 3 , 10-40 mol% of MgO and 5-15 mol% of TiO 2 , in which the total amount of aforementioned composition is at least equal to or higher than 92 mol% and the main crystals are enstatite and/or its solid solution. The information recording medium having this substrate and a recording layer formed on said substrate.

摘要翻译： 本发明提供一种信息记录介质用基板，其由具有高杨氏模量，强度和耐热性，表面光滑性，表面均匀性和表面加工性优异以及玻璃液相温度相对较低的结晶玻璃和 能够便宜地制造，以及使用该基板的信息记录介质。 用于信息记录介质的结晶玻璃基片包括35-65摩尔％的SiO 2，5-25摩尔％的Al 2 O 3，10-40摩尔％的MgO和5-15摩尔％的TiO 2，其中上述组合物的总量为 至少等于或高于92摩尔％，主晶体是顽辉石和/或其固溶体。 信息记录介质具有该基片和形成在所述基片上的记录层。

公开(公告)号：EP1067101A2

公开(公告)日：2001-01-10

申请号：EP00114609.1

申请日：2000-07-07

申请人： Hoya Corporation

发明人： Zou, Xuelu

IPC分类号： C03C10/04 ,  C03B32/00 ,  G11B5/62

CPC分类号： C03B32/02 ,  C03C10/0045 ,  G11B5/8404 ,  Y10S428/90 ,  Y10T428/24355

摘要： Disclosed is a process for preparation of crystallized glass obtained by making a glass containing TiO 2 subjected to a phase separation step and a crystallization step, where the phase separation step has heat treatment of the glass at a temperature in a range from a temperature of the glass transition temperature Tg (Tg - 30 °C) to a temperature 60 °C higher than the glass transition temperature Tg (Tg + 60 °C). There are also disclosed a crystallized glass for information recording disk composed of the crystallized glass obtained by the preparation process, where a mean particle size of the crystal particles is in a range of equal to or less than 100 nm, or where a transparency at a wavelength of 600 nm is 40 % or higher; and an information recording disk, composed of the glass, having a polished surface with a surface roughness Ra (JIS B0601) in a range from 0.1 to 0.5 nm.

摘要翻译： 公开了一种制备结晶玻璃的方法，该方法通过制备经过相分离步骤和结晶步骤的含有TiO 2的玻璃而获得，其中相分离步骤在玻璃的温度范围内的温度下对玻璃进行热处理， 转变温度Tg（Tg-30℃）至比玻璃化转变温度Tg（Tg + 60℃）高60℃的温度。 还公开了一种用于信息记录盘的结晶玻璃，其由通过制备方法获得的结晶玻璃构成，其中晶体颗粒的平均粒度在等于或小于100nm的范围内，或者其中透明度为 600nm的波长为40％以上; 以及由具有表面粗糙度Ra（JIS B0601）的抛光面在0.1〜0.5nm范围内的玻璃构成的信息记录盘。

公开(公告)号：EP1468973B1

公开(公告)日：2012-05-09

申请号：EP04009188.6

申请日：2004-04-19

申请人： HOYA CORPORATION

发明人： Fujiwara, Yasuhiro ,  Zou, Xuelu

IPC分类号： C03C3/16

CPC分类号： C03B40/04 ,  C03B7/12 ,  C03B11/12 ,  C03B2215/66 ,  C03B2215/69 ,  C03C3/16

公开(公告)号：EP2019087A1

公开(公告)日：2009-01-28

申请号：EP08018969.9

申请日：2006-03-27

申请人： Hoya Corporation

发明人： Ikenishi, Mikio ,  Zou, Xuelu

IPC分类号： C03C3/17 ,  C03C3/247

CPC分类号： C03C3/17 ,  C03C3/247

摘要： A low-dispersion optical glass suitable for producing a quality preform from a molten glass and suitable for precision press-molding, which is a fluorophosphate glass containing, as essential cationic components, P 5+ , Al 3+ , at least two members selected from Mg 2+ , Ca 2+ , Sr 2+ and Ba 2+ as divalent cationic components (R 2+ ) and Li + and containing, by cationic %,
10 to 45 % of P 5+ ,
5 to 30 % of Al 3+ ,
0 to 20 % of Mg 2+ ,
0 to 25 % of Ca 2+ ,
0 to 30 % of Sr 2+ ,
0 to 33 % of Ba 2+ ,
1 to 30 % of Li + ,
0 to 10 % of Na + ,
0 to 10 % of K + ,
0 to 5 % of Y 3+ ,
and 0 to 15 % of B 3+ ,

the molar ratio of the content of F - to the total content of F - and O 2- , F - /(F - + O 2- ), being 0.25 to 0.85,
the optical glass having a refractive index (N d ) of 1.40 to 1.58 and an Abbe's number (ν d ) of 67 to 90.

摘要翻译： 适合于从熔融玻璃制造预成型体的品质和适于精密模压的低分散光学玻璃，所有这是一种氟磷酸盐玻璃包含，作为主要阳离子成分，P 5+，铝3+，选自以下的至少两个成员 毫克2+，钙离子，锶2+和Ba 2+二价阳离子组分（R 2+）和Li +和含，以阳离子％表示，10至P 5+的45％以下，Al 3的5〜30％ +，0至20毫克％2+，钙离子的0至25％，0〜30％Sr的2+，钡2+ 0〜33％，Li +的1〜30％，0〜10％的 的Na +，0〜K +的10％，Y 3+ 0〜5％，和B 3+，F的含量的摩尔比为0〜15％ - 至F的总含量 - 和O 2 - F - /（F - + O 2-），为0:25〜0.85，具有1:40的折射率（n d）为以1:58和67阿贝数（1/2 D）到90的光学玻璃