摘要:
The present invention relates to optical glass having a high refractive index, high dispersion, and a low glass transition temperature; a preform comprised of the optical glass for precision press-molding and a method of manufacturing the same; and an optical element comprised of the optical glass and a method of manufacturing the same. An example of the optical glasses for precision press molding is characterized by comprising essential components in the form of P2O5, Nb2O5, WO3, TiO2, Bi2O3, Li2O, and Na2O; comprising optional components in the form of B2O3, BaO, ZnO, K2O, Sb2O3, and As2O3; where the content of Bi2O3 exceeds 4 weight percent but does not exceed 15 molar percent; the content of Li2O exceeds 3 weight percent but does not exceed 15 weight percent; the combined quantity of Nb2O5, WO3, TiO2, and Bi2O3 is from 25 to 45 molar percent; the combined quantity of Li2O, Na2O, and K2O is less than or equal to 42 molar percent; the combined quantity of the essential components and optional components is greater than or equal to 98 molar percent; the refractive index (nd) is from 1.75 to 2.0; and the Abbé number (νd) is from 18 to 30.
摘要翻译:本发明涉及具有高折射率,高分散性和低玻璃化转变温度的光学玻璃; 由用于精密加压成型的光学玻璃制成的预制件及其制造方法; 以及由该光学玻璃构成的光学元件及其制造方法。 精密加压成型的光学玻璃的一个例子的特征在于包括主要成分为P 2 O 5,Nb 2 O 2, 3个,3个,2个,2个,3个,3个,3个,3个 > 2 O,和Na 2 O; 包含B 2 O 3,BaO,ZnO,K 2 O,Sb 2 O 3的形式的任选组分, O 3 O 3,和O 2 O 3 3。 其中Bi 2 O 3 3的含量超过4重量%但不超过15摩尔%; Li 2 O 2的含量超过3重量%但不超过15重量%; Nb 2 O 5,WO 3,TiO 2和Bi 2的组合量, O 3为25〜45摩尔%。 Li 2 O,Na 2 O和K 2 O 2的组合量小于或等于42摩尔%; 必需组分和任选组分的组合量大于或等于98摩尔%; 折射率(nd)为1.75〜2.0; 而修道院号码(nud)则从18到30。
摘要:
A high-refractivity high-dispersion optical glass for producing an optical element, which requires no machining, such as polishing or lapping, of an optical-function surface after precision press molding, containing B2O3, SiO2, La2O3, Gd2O3, ZnO, Li2O, ZrO2 and Ta2O5 as essential components, containing 0 to 1 mol % of Sb2O3 as an optional component, substantially containing none of PbO and Lu2O3, having a glass transition temperature of 630° C. or lower, and (1) having a refractive index nd and an Abbe's number νd which satisfy all of the following relational expressions, 1.80
摘要翻译:一种用于制造光学元件的高折射率高分散度光学玻璃,其不需要在精密模压之后的光学功能表面的研磨或研磨,例如抛光或研磨,包含B< 2< SUB > 3 sub>,SiO 2,La 2 O 3 3,Gd 2 O 3 ZnO,Li 2 O,ZrO 2和Ta 2 O 5作为必要成分, 含有0〜1mol%的Sb 2 O 3 O 3作为任选的组分,基本上不含有PbO和Lu 2 O 3 玻璃化转变温度为630℃以下,(1)具有满足以下所有关系式的折射率nd和阿贝数nud,1.80 = 2.025-(0.005xnud)或(2)nd大于1.85,nud大于35。
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, P5+, Al3+, at least two members selected from Mg2+, Ca2+, Sr2+ and Ba2+ as divalent cationic components (R2+) and Li+ and containing, by cationic %, 10 to 45% of P5+, 5 to 30% of Al3+, 0 to 20% of Mg2+, 0 to 25% of Ca2+, 0 to 30% of Sr2+, 0 to 33% of Ba2+, 1 to 30% of Li+, 0 to 10% of Na+, 0 to 10% of K+, 0 to 5% of Y3+, and 0 to 15% of B3+, the molar ratio of the content of F− to the total content of F− and O2−, F−/(F−+O2−) being 0.25 to 0.85, the optical glass having a refractive index (Nd) of 1.40 to 1.58 and an Abbe's number (νd) of 67 to 90.
摘要:
A peripheral portion of a molding material 50 on its lower side is supported on a support member 40 provided around a molding surface 21 of a lower mold 20 and an open space is ensured outward of an edge portion of the molding material 50 supported on the support member 40. In this state, the molding material 50 is press-molded between an upper mold 10 and the lower mold 20.
摘要:
An optical glass having a high refractive index and high dispersion characteristics that is suited to application to precision press molding to precisely mold the shape of final products for objectives not requiring grinding or polishing. An optical glass exhibiting a refractive index in the range of from 1.75 to 2.0, an Abbé number in the range of from 20 to 28.5. Optical parts comprised of this glass; press-molding materials comprised of this glass; methods of manufacturing the same; and methods of manufacturing molded glass products employing these materials.
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:
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 SiO2, 5-25 mol % of Al2O3, 10-40 mol % of MgO and 5-15 mol % of TiO2, 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:
Provided are a process for the production of a precision press-molded article having a high transmittance and a method of treating a glass to color or decolor the glass, the process comprising heat-treating a press-molded article containing at least one selected from WO3, Nb2O5 or TiO2 in an oxidizing atmosphere to produce a glass molded article, and the method comprising heat-treating a colored glass containing at least one oxide of WO3 and Nb2O5 in an oxidizing atmosphere to decolor the glass, or heat-treating a glass containing at least one oxide selected from WO3, Nb2O5 or TiO2 in a non-oxidizing atmosphere to color the glass.
摘要翻译:提供一种具有高透射率的精密压模制品的制造方法和玻璃的处理方法以使玻璃着色或脱色,该方法包括热处理含有选自WO 3中的至少一种的加压成型制品 ,Nb 2 O 5或TiO 2在氧化气氛中制造玻璃成形体,所述方法包括在氧化气氛中对含有至少一种WO 3和Nb 2 O 5的氧化物的着色玻璃进行热处理,以使所述玻璃脱色或热处理含有 在非氧化气氛中选自WO 3,Nb 2 O 5或TiO 2中的至少一种氧化物以使玻璃着色。
摘要:
Provided are a process for the production of a precision press-molded article having a high transmittance and a method of treating a glass to color or decolor the glass, the process comprising heat-treating a press-molded article containing at least one selected from WO3, Nb2O5 or TiO2 in an oxidizing atmosphere to produce a glass molded article, and the method comprising heat-treating a colored glass containing at least one oxide of WO3 and Nb2O5 in an oxidizing atmosphere to decolor the glass, or heat-treating a glass containing at least one oxide selected from WO3, Nb2O5 or TiO2 in a non-oxidizing atmosphere to color the glass.
摘要翻译:提供一种具有高透射率的精密压模制品的制造方法和玻璃的处理方法以使玻璃着色或脱色,该方法包括热处理含有选自WO 3中的至少一种的加压成型制品 ,Nb 2 O 5或TiO 2在氧化气氛中制造玻璃成形体,所述方法包括在氧化气氛中对含有至少一种WO 3和Nb 2 O 5的氧化物的着色玻璃进行热处理,以使所述玻璃脱色或热处理含有 在非氧化气氛中选自WO 3,Nb 2 O 5或TiO 2中的至少一种氧化物以使玻璃着色。
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 SiO2, 5-25 mol % of Al2O3, 10-40 mol % of MgO and 5-15 mol % of TiO2, 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,强度和耐热性的结晶玻璃构成,表面平滑性,表面均匀性和表面加工性优异,玻璃液相温度较低, 能够廉价地制造的信息记录介质,以及使用该基板的信息记录介质。 包含35-65mol%SiO 2,5-25mol%Al 2 O 3,10-40mol%MgO和5-15mol%TiO 2的信息记录介质的结晶玻璃基板,其中上述组成的总量为 至少等于或高于92mol%,并且主晶体是顽辉石和/或其固溶体。 具有该基板的信息记录介质和形成在所述基板上的记录层。