Patents by Inventor Ute Woelfel
Ute Woelfel has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 7598192Abstract: The invention relates to optical glasses intended for the application fields of imaging, sensors, microscopy, medical technology, digital projection, photolithography, laser technology, wafer/chip technology, and for telecommunication, optical communication engineering and optics/lighting in the automotive sector, having a refractive index of 1.60?nd?1.80 and/or an Abbe number of 30??d?40 with a pronounced short flint character, good chemical stability, excellent crystallization stability, good solarization stability and the following composition (in wt. % based on oxide): SiO2 19-45 B2O3 ??3-7.5 Nb2O5 25-31 K2O 2-8 TiO2 0.1-2?? ZrO2 ?6-10 Ta2O5 0.5-8.Type: GrantFiled: December 8, 2006Date of Patent: October 6, 2009Assignee: Schott AGInventors: Silke Wolff, Goran Sabljic, Ute Woelfel
-
Patent number: 7553785Abstract: The lead-free, arsenic-free, preferably gadolinium-free and fluorine-free, optical glass has a refractive index of 1.86?nd?1.95, an Abbe number of 19?vd?24, a transformation temperature of ?595° C., preferably ?550° C., good crystallization stability, good processing properties and production properties. The optical glass is free of Na2O, frre of B2O3 and has a composition (based on oxide content in % by weight) of P2O5, 14-31; Nb2O5, 22-50; Bi2O3, 5-36; WO3, >10-25; GeO2, 0-14; Li2O, 0-6; K2O, 0-6; Cs2O, 1-7; MgO, 0-6; CaO, 0-6; SrO, 0-6; BaO, 0-6; ZnO, 0-6; TiO2, 0-4; ? alkali oxides, 2-12; ? alkaline earth oxides, 0-10; ? Nb2O5, WO3, Bi2O3?50 and fining agents, 0-2.Type: GrantFiled: August 15, 2006Date of Patent: June 30, 2009Assignee: Schott AGInventors: Simone Monika Ritter, Ute Woelfel, Stefanie Hansen
-
Patent number: 7501366Abstract: Optical glasses are described, which are useful for imaging, sensors, microscopy, medical technology, digital protection, photolithography, laser technology, wafer/chip technology, as well as telecommunication, optical communications engineering and optics/lighting in the automotive sector, with a refractive index of 1.80?nd?1.95 and an Abbe value from 19??d?28 with excellent chemical resistance and stability to crystallization. These optical glasses have a composition, in weight. % based on oxide content, of: P2O5, 14-35; Nb2O5, 45-50; Li2O, 0-4; Na2O, 0-4; K2O, 0.5-5; BaO, 17-23; ZnO, 0.1-5; TiO2, 1-<5; ZrO2, 0-6; and Sb2O3, 0.1-2.Type: GrantFiled: March 16, 2007Date of Patent: March 10, 2009Assignee: Schott AgInventors: Silke Wolff, Stefanie Hansen, Ute Woelfel
-
Publication number: 20080300125Abstract: The present invention refers to optical glasses designated to be used in the areas of imaging, sensors, microscopy, medical technology, digital projection, photolithography, laser technology, wafer/chip technology as well as telecommunications, optical communications engineering and optics/illumination in the automotive sector with a refractive index nd of 1.60?nd?1.72 and/or an Abbe number vd of 32?vd?45 with pronounced short flint character, good chemical resistance, excellent resistance to crystallization, good solarization stability and the following composition (in % by weight based on oxides): SiO2 30-45 B2O3 ?8-12 Na2O ?8-15 CaO 0.Type: ApplicationFiled: May 29, 2008Publication date: December 4, 2008Inventors: Silke Wolff, Ute Woelfel, Gordon Kissl
-
Patent number: 7396787Abstract: The lead-free, preferably lithium-free, optical glass is useful in imaging, projection, telecommunications, optical communication and/or laser technology, particularly for making precise-pressed optical elements. It has a refractive index nd of 1.50 to 1.57, an Abbé number ?d of 61 to 70. It also has a low transformation temperature of about or below 400° C., good production and processing properties and crystallization resistance. It has a composition, in percent by weight, based on oxide content of P2O5, 40 to 60; Al2O3, 1 to 20; B2O3, 0 to <5; Na2O, 0 to 30; K2O, 0 to 30; Li2O, 0 to <1; ?M2O, >15 to 40; BaO, 1 to 20; ZnO, 1 to 20; SrO, 0 to 5; CaO, 0 to 5; MgO, 0 to 5; and ?MO, 5 to 25. In addition, it may contain standard refining agents, although it is preferably free of arsenic and fluorine.Type: GrantFiled: January 13, 2005Date of Patent: July 8, 2008Assignee: Schott AGInventors: Simone Monika Ritter, Ute Woelfel, Silke Wolff
-
Publication number: 20080085826Abstract: The present invention relates to lead and fluorine and preferably lithium free optical glasses for the application areas imaging, projection, telecommunications optical communications engineering, mobile drive and/or laser technology with a refractive index of from 1.60?nd?1.64 and an Abbe number of from 56??d?64, which glasses have a low transformation temperature, namely less than or equal to 590° C., preferably less than or equal to 585° C., more preferred less than or equal to 570° C., which glasses can still further be produced and handled easily and are stable to crystallization. The glasses according to the invention with the following composition (in weight-% based on the oxides) comprise the following components: P2O5 26-35 B2O3 10-15 Al2O3 5.5-10? BaO 25-37 SrO 0-6 CaO ?8-15 ZnO ?3-10 Bi2O3 0-8 Na2O 0-2 K2O 0-2 WO3 ?0-10 La2O3 0-2 Nb2O5 0-1 TiO2 ??0-<1 ?earth alkali oxides ?40 ?alkali oxides 0-2 common refining agents ??0-0.Type: ApplicationFiled: October 2, 2007Publication date: April 10, 2008Inventors: Simone Monika Ritter, Ute Woelfel
-
Publication number: 20080039309Abstract: The lead-free optical glass can be used in the fields of imaging, sensor technology, microscopy, medical technology, digital projection, photolithography, laser technology, wafer/chip technology, as well as of telecommunications, optical communication engineering and optics/lighting in the automotive sector. It has a refractive index nd of 1.82?nd?2.00 and/or an Abbe number vd of 18?vd?28 with good chemical stability, excellent crystallization stability and the following composition, in wt. based on oxide content, of: P2O5 12-35 Nb2O5 30-50 Bi2O3 ?2-13 GeO2 0.1-7?? Li2O ?6 Na2O ?6 K2O ?6 Cs2O ?6 MgO ?6 CaO ?6 SrO ?6 BaO ???7-<17 ZnO ?6 TiO2 ?7 ZrO2 ?7 WO3 ?2-14 F ??6.Type: ApplicationFiled: August 8, 2007Publication date: February 14, 2008Inventors: Silke Wolff, Simone Monika Ritter, Ute Woelfel
-
Patent number: 7323427Abstract: A short optical glass is disclosed which is particularly suited for the applications imaging, projection, telecommunication, optical information technology and/or laser technology, also particularly suited for fiber applications (light guides or imaging guides). Preferably, the glass has a refractive index of 1.54?nd?1.62 and an Abbe coefficient of 48?vd=57. It further has good attenuating and ion exchange characteristics, good chemical stability and good crystallization stability. The glass comprises 35 to 50 wt.-% SiO2, 0.1 to 6 wt.-% B2O3, 0.1 to 7 wt.-% Al2O3, 0.1 to 4 wt.-% P2O5, 4 to 24 wt.-% R2O (alkali oxides), 6 to 14.5 wt.-% BaO, 0 to 12 wt.-% other RO (alkaline earth oxides), 14 to 25 wt.-% ZnO, 0 to 5 wt.-% La2O3, 0 to 10 wt.-% ZrO2, wherein R2O is an alkali oxide, RO is an alkaline earth oxide other than BaO, wherein Li2O is 6 wt.Type: GrantFiled: February 27, 2004Date of Patent: January 29, 2008Assignee: Schott AGInventors: Silke Wolff, Ute Woelfel, Uwe Kolberg, Holger Kasprzik
-
Patent number: 7297647Abstract: The present invention relates to lead and arsenic free optical glasses, used for the application areas imaging, digital projection, photolithography, laser technology, wafer/chip technology as well as telecommunication, optical communications engineering, optics, illumination and in the automotive sector. The glasses have a refraction power of from 1.73?nd?1.82 and an Abbé value of 43?vd?53 with good chemical consistency and excellent crystallisation stability with the following composition (in weight-%): SiO2 0.1-5.5 B2O3 27-35 La2O3 42-48 BaO 0-5 ZnO 0.5-5?? Y2O3 ?6-12 TiO2 0-4 ZrO2 ?4-10 Nb2O5 0-5 WO3 ?0-5.Type: GrantFiled: February 28, 2005Date of Patent: November 20, 2007Assignee: Schott AGInventors: Silke Wolff, Karl Mennemann, Ute Woelfel
-
Publication number: 20070249483Abstract: Lead and arsenic free, and preferably gadolinium and further preferably also fluorine free, optical glasses for the application fields mapping, projection, telecommunication, optical communication engineering, mobile drive, laser technology and/or micro lens arrays have a refractive index of 1.91?nd?2.05, an Abbe number of 19?vd?25 and have a low transformation temperature, namely of less than or equal to 470° C. and preferably of less than or equal to 450° C., as well as good producibility and processability and crystallisation stability.Type: ApplicationFiled: October 25, 2006Publication date: October 25, 2007Inventors: Simone Ritter, Ute Woelfel, Bianca Schreder, Stefanie Hansen
-
Publication number: 20070225146Abstract: Optical glasses are described, which are useful for imaging, sensors, microscopy, medical technology, digital protection, photolithography, laser technology, wafer/chip technology, as well as telecommunication, optical communications engineering and optics/lighting in the automotive sector, with a refractive index of 1.80?nd?1.95 and an Abbe value from 19??d?28 with excellent chemical resistance and stability to crystallization. These optical glasses have a composition, in weight % based on oxide content, of: P2O5, 14-35; Nb2O5, 45-50; Li2O, 0-4; Na2O, 0-4; K2O, 0.5-5; BaO, 17-23; ZnO, 0.1-5; TiO2, 1-<5; ZrO2, 06; and Sb2O3, 0.1-2.Type: ApplicationFiled: March 16, 2007Publication date: September 27, 2007Inventors: Silke Wolff, Stefanie Hansen, Ute Woelfel
-
Publication number: 20070149381Abstract: The invention relates to optical glasses intended for the application fields of imaging, sensors, microscopy, medical technology, digital projection, photolithography, laser technology, wafer/chip technology, and for telecommunication, optical communication engineering and optics/lighting in the automotive sector, having a refractive index of 1.60?nd?1.80 and/or an Abbe number of 30??d?40 with a pronounced short flint character, good chemical stability, excellent crystallization stability, good solarization stability and the following composition (in wt. % based on oxide): SiO2 19–45 B2O3 ??3–7.5 Nb2O5 25–31 K2O 2–8 TiO2 0.1–2?? ZrO2 ?6–10 Ta2O5 0.Type: ApplicationFiled: December 8, 2006Publication date: June 28, 2007Inventors: Silke Wolff, Goran Sabljic, Ute Woelfel
-
Patent number: 7208431Abstract: A glass with high internal transmission as well as low tendency to radiation-caused physical compaction and low tendency to solarization, comprising 18 to 31% by weight of SiO2, 0 to 7% by weight of Na2O3, 0 to 7% by weight of K2O, 65 to 84% by weight of PbO, 0.001 to 1% by weight of As2O3+As2O5, which is characterized by a content of 0 to 5000 ppm of Sb2O3 0 to 500 ppm of TiO2 0 to 100 ppm of CuO 0 to 1000 ppm of F. The ?(As2O3, As2O5, Sb2O3, F)?20 ppm and the ratio of As(III)/As(V) is at least 0.5. Such a glass is suitable for the use as optical element.Type: GrantFiled: January 7, 2005Date of Patent: April 24, 2007Assignee: Schott AGInventors: Silke Wolff, Ute Woelfel
-
Publication number: 20070054795Abstract: The present invention relates to lead and arsenic free optical hard crown glasses with a low transformation temperature (Tg?520° C.), characterized by their optical range with a refractive index of 1.57?nd?1.61 and an Abbe number of 56??d?63. The glasses have the following composition (in wt %): SiO2 37-46 B2O3 12-18 Al2O3 1-7 Li2O 5.5-<7? Na2O 1-5 K2O <4 MgO <5 CaO <7 BaO 21-29 SrO 0.1-1.5 ZnO ??1-4.5 TiO2 0.1-0.5 ZrO2 ??<0.7 with ? TiO2, ZrO2 < 0.9. Refiners can be added, provided that they do not comprise arsenic.Type: ApplicationFiled: February 3, 2006Publication date: March 8, 2007Inventors: Silke Wolff, Stefanie Hansen, Ute Woelfel
-
Publication number: 20070042891Abstract: The lead-free, arsenic-free, preferably gadolinium-free and fluorine-free, optical glass has a refractive index of 1.86?nd?1.95, an Abbe number of 19?vd?24, a transformation temperature of ?595° C., preferably ?550° C., good crystallization stability, good processing properties and production properties. The optical glass has a composition (based on oxide content in % by weight) of P2O5, 14-31; Nb2O5, 22-50; Bi2O3, 5-36; WO3, >10-25; GeO2, 0-14; Li2O, 0-6; K2O, 0-6; Cs2O, 0-7; MgO, 0-6; CaO, 0-6; SrO, 0-6; BaO, 0-6; ZnO, 0-6; TiO2, 0-4; ? alkali oxides, 2-12; ? alkaline earth oxides, 0-10; ? Nb2O5, WO3, Bi2O3?50 and fining agents, 0-2.Type: ApplicationFiled: August 15, 2006Publication date: February 22, 2007Inventors: Simone Ritter, Ute Woelfel, Stefanie Hansen
-
Patent number: 7169470Abstract: A short optical glass is disclosed which does not comprise any silver, copper, thallium, lead or boron and is particularly suited for the application imaging, projection, telecommunication, optical information technology, and/or laser technology, also particularly suited for fiber applications (light guides or imaging guides). Preferably the glass has a refractive index of 1.55?nd?1.65 and an Abbe coefficient of 48?vd?57 and also has good attenuating and ion exchange characteristics, good chemical stability and good crystallization stability. The glass comprises 35 to <50 wt.-% SiO2; 1 to 10 wt.-% Al2O3; 5 to 15 wt.-% Na2O+K2O+CS2O+Li2O; 20 to 30 wt.-% BaO; 0 to 15 wt.-% ZnO; 0 to 10 wt.-% La2O3; 0 to 10 wt.-% ZrO2; 0 to 6 wt.-% P2O5; 0 to 8 wt.-% MgO+CaO+SrO; 0 to 3 wt.-% of other oxides, and Cs2O<1, Li2O<1, and TiO2<1 wt.-%.Type: GrantFiled: February 24, 2004Date of Patent: January 30, 2007Assignee: Schott AGInventors: Silke Wolff, Ute Woelfel, Uwe Kolberg, Holger Kasprzik
-
Patent number: 7141524Abstract: The lead-free, Li2O-free, CuO-free and preferably arsenic-free optical glass is suitable for applications in the fields of imaging, projection, telecommunications, optical communication technology and/or laser technology, and has a refractive index nd of 1.55?nd?1.60, an Abbe number Vd of 54?Vd?63 and a transformation temperature Tg?500° C. This optical glass has good production and processing properties and crystallization stability, and, at the same time, advantageously does not contain PbO and As2O3. These glasses contain, in percent by weight based on oxide content: P205, 43-56; ZnQ, 21-36; Al2O3, 0-6; Na2O, 0-16; K2O, 0-8; ?M2O ?16; MgO, 0-5; CaO, 0-5; BaO, 3-14; B2O3, 0-8; La2O3, 0-7. In addition, it may also contain standard refining agents.Type: GrantFiled: August 19, 2003Date of Patent: November 28, 2006Assignee: Schott AGInventors: Silke Wolff, Ute Woelfel
-
Publication number: 20060247119Abstract: The present invention describes lead and arsenic free and preferably gadolinium and further preferably also fluorine free optical glasses for the application fields mapping, projection, telecommunication, optical communication engineering, mobile drive and/or laser technology with a refractive index of 1.75?nd?1.85, an Abbe number of 34?vd?44 and have a low transformation temperature, namely lower than or equal to 560° C. and preferably lower than or equal to 550° C., as well as good producability and processability and crystallisation stability. The glasses according to the present invention within the following composition range (based on oxide in % by weight) contain the following components: SiO2 0.5-8?? B2O3 10-25 ZnO 10-26 La2O3 18-34 Ta2O5 >15-25?? Nb2O5 0.Type: ApplicationFiled: April 27, 2006Publication date: November 2, 2006Inventors: Simone Ritter, Ute Woelfel, Stefanie Hansen
-
Patent number: 7091145Abstract: The lead-free and arsenic-free optical glass has a refractive index nd of 1.84?nd?1.96 and an Abbé number ?d of 27??d?36, with good chemical resistance, excellent crystallization resistance and the following composition (in % by weight based on oxide): SiO2, 1 to 8, B2O3, 13 to 19.5, La2O3, 34 to 50; MgO, 0 to 6, CaO, 0 to 6, BaO, 0 to 6, ZnO, 0 to 9 with ?MO, 1 to 10; and TiO2, 4 to 15, ZrO2, 0 to 11, Nb2O5, 6 to 14.5. In addition, the glass according to the invention, as well as having a maximum alkali metal oxide content of 10% by weight, may also contain standard refining agents other than arsenic. The glass according to the invention is used in imaging, projection, telecommunications, optical communication and/or laser technology.Type: GrantFiled: June 16, 2003Date of Patent: August 15, 2006Assignee: Schott AGInventors: Silke Wolff, Ute Woelfel
-
Patent number: 6960545Abstract: The present invention relates to preferably lead-free and arsenic-free optical glasses, having a refractive index of 1.48?nd?1.56, an Abbe number of 64??d?72, a low transformation temperature (Tg?500° C.) and good ion exchange properties, as well as good chemical resistance and crystallization stability, and comprising the following composition (in % by weight): SiO2 53-58 B2O3 11-15 Al2O3 16-20 Na2O ?0-13 K2O ?0-13 ?M2O ?9-13 F 0.5-4?? The glass may additionally contain standard refining agents. The invention also relates to the use of the optical glasses according to the invention in the application areas of imaging, projection, telecommunications, optical communication technology and/or laser technology.Type: GrantFiled: December 2, 2003Date of Patent: November 1, 2005Assignee: Schott GlasInventors: Silke Wolff, Ute Woelfel