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    • 4. 发明申请
    • OPTICAL GLASS, GLASS MATERIAL FOR PRESS MOLDING, AND OPTICAL ELEMENT
    • 光学玻璃,玻璃材料用于压制成型和光学元件
    • US20150353407A1
    • 2015-12-10
    • US14758346
    • 2013-12-26
    • HOYA CORPORATION
    • Kosuke YAMAGUCHI
    • C03B11/00G02B1/00C03C3/064C03C3/068C03C3/066
    • C03C3/064C03B11/00C03B2215/46C03C3/066C03C3/068C03C3/14G02B1/00
    • Provided are an optical glass with a high refractive index which has excellent devitrification resistance both in a molten state and during reheating, and a glass material for press molding and an optical element which are comprised of the optical glass. This optical glass includes, in mass %, 15-37% of B2O3 and SiO2 in total, 15-45% of TiO2, Nb2O5 and ZrO2 in total, and 12-40% of BaO, SrO, CaO, MgO, K2O, Na2O and Li2O in total, has a mass ratio (B2O3/(B2O3+SiO2)) of 0.15 or more, a mass ratio (TiO2/(TiO2+Nb2O5+ZrO2)) of 0.01 to 0.8, a mass ratio ((BaO+SrO+CaO)/(BaO+SrO+CaO+MgO+K2O+Na2O+Li2O)) of 0.4 or more, and a mass ratio ((K2O+Na2O+Li2O)/(BaO+SrO+CaO+MgO+K2O+Na2O+Li2O)) of 0.1 or more, substantially does not include PbO, and has a refractive index nd of 1.78-1.84, and an Abbe's number νd of 26-32.
    • 提供一种具有高折射率的光学玻璃,其在熔融状态和再加热期间都具有优异的耐失透性,以及由光学玻璃构成的用于压制成型的玻璃材料和光学元件。 该光学玻璃以质量%计,总共含有15-37%的B 2 O 3和SiO 2,总共含有15-45%的TiO 2,Nb 2 O 5和ZrO 2以及12-40%的BaO,SrO,CaO,MgO,K 2 O,Na 2 O 和Li 2 O,质量比(B 2 O 3 /(B 2 O 3 + SiO 2))为0.15以上,质量比(TiO 2 /(TiO 2 + Nb 2 O 5 + ZrO 2))为0.01〜0.8,质量比((BaO + SrO +(BaO + SrO + CaO + MgO + K2O + Na2O)的质量比((K2O + Na2O + Li2O)/(BaO + SrO + CaO + MgO + K2O + Na2O + Li2O))为0.4以上 + Li 2 O))为0.1以上,基本上不包含PbO,折射率nd为1.78〜1.84,阿贝数n为26-32。
    • 5. 发明授权
    • Glass substrate for magnetic disk and manufacturing method thereof
    • 磁盘用玻璃基板及其制造方法
    • US09003834B2
    • 2015-04-14
    • US12979171
    • 2010-12-27
    • Shinji EdaHideki Isono
    • Shinji EdaHideki Isono
    • C03B11/00G11B5/84C03B11/08
    • G11B5/735B24B1/00C03B11/088C03B2215/44C03C19/00G11B5/8404Y10T428/24355
    • The present invention provides a glass substrate for magnetic disk in which surface irregularity of a principal surface is suppressed and a method for efficiently manufacturing a glass substrate for magnetic disk. The method includes the steps of: forming a sheet glass material by performing press forming to molten glass, a principal surface of the sheet glass material having target flatness for the glass substrate for magnetic disk, the sheet glass material having a surface shape to be ground using a grinding abrasive grain; grinding the sheet glass material using a fixed abrasive grain; and polishing the sheet glass material using a loose abrasive grain, the sheet glass material having surface irregularity of the principal surface ground using the fixed abrasive grain.
    • 本发明提供了一种用于抑制主面的表面不规则性的磁盘用玻璃基板和有效地制造磁盘用玻璃基板的方法。 该方法包括以下步骤:通过对熔融玻璃进行压制成形来形成玻璃板材料,对于具有用于磁盘的玻璃基板的目标平面度的玻璃板材料的主表面,具有待研磨的表面形状的玻璃板材料 使用研磨磨粒; 用固定的磨粒研磨平板玻璃材料; 并且使用松散的磨粒抛光玻璃板材料,该玻璃板材料使用固定的磨料颗粒具有主表面磨削的表面不规则性。
    • 9. 发明授权
    • Optical glass, glass material for press molding, optical element blank, optical element and manufacturing method thereof
    • 光学玻璃,压模用玻璃材料,光学元件坯料,光学元件及其制造方法
    • US08431499B2
    • 2013-04-30
    • US13492224
    • 2012-06-08
    • Mikio Ikenishi
    • Mikio Ikenishi
    • C03C3/247C03B11/00
    • C03C3/247C03B2215/12C03B2215/24G02B1/02Y02P40/57
    • A fluorophosphate glass containing: P5+ in an amount of 20 to 45 cationic %; Al3+ in an amount of 15 to 35 cationic %; Ba2+ in an amount of 20 to 50 cationic %; B3+ in an amount of 0 to 5 cationic %; F− in an amount of 20 to 50 anionic %; and O2− in an amount of 50 to 80 anionic %. A molar ratio of O2−/P5+ is greater than or equal to 3.5. In addition, a molar ratio of Al3+/P5+ is less than or equal to 1. In addition, the Abrasion FA is less than or equal to 600, or the Knoop hardness number is greater than or equal to 300 MPa. Furthermore, the Abbe number (νd) of the glass is larger than or equal to 66. Moreover, a refractive index (nd) of the glass satisfies an expression (1): nd≧2.0614−0.0071×νd. Finally, the fluorophosphate glass does not contain Cu in an amount by which Cu serves as a coloring agent.
    • 含有磷酸酯玻璃,其含量为20〜45阳离子%的P5 + 含量为15〜35阳离子%的Al3 + Ba2 +的量为20〜50阳离子%; B3 +为0〜5阳离子%; F-含量为20〜50%阴离子%; 和O 2 - 的量为50至80阴离子%。 O2- / P5 +的摩尔比大于或等于3.5。 此外,Al3 + / P5 +的摩尔比小于或等于1.另外,磨损FA小于或等于600,或者诺普硬度大于或等于300MPa。 此外,玻璃的阿贝数(nud)大于或等于66.此外,玻璃的折射率(nd)满足式(1):nd> = 2.0614-0.0071×nud。 最后,氟磷酸盐玻璃不含有以Cu作为着色剂的量的Cu。
    • 10. 发明申请
    • METHOD OF MANUFACTURING A GLASS SUBSTRATE FOR MAGNETIC DISK
    • 制造用于磁盘的玻璃基板的方法
    • US20130025320A1
    • 2013-01-31
    • US13362147
    • 2012-01-31
    • Hideki IsonoShinji Eda
    • Hideki IsonoShinji Eda
    • C03B11/00
    • G11B5/8404C03B11/088C03B2215/70
    • A manufacturing method of a glass substrate for magnetic disk including a pair of principal surfaces is disclosed The method includes the steps of: dropping process for dropping a lump in vertically downward direction, the lump made by cutting molten glass; pressing process for forming a sheet glass material by sandwiching substantially simultaneously the lump from both sides of the dropping path of the lump with surfaces of the pair of dies at the timing when at least a cut mark of the lump protrudes from a pair of dies facing together, and performing press forming to the lump; and removing process for removing the glass material protruding from the pair of dies.
    • 公开了一种包括一对主面的磁盘用玻璃基板的制造方法。该方法包括以下步骤:在垂直向下方向上落下一团块的落下方法,通过切割熔融玻璃制成的块体; 在至少一块切割标记从一对模具面向外突出的时刻,基本上同时夹着该块的下落路径的两侧的块与该一对模具的表面形成的压制工艺 在一起,并进行压制成型; 以及去除从一对模具突出的玻璃材料的去除工序。