Ultraviolet Transmitting Or Absorbing Patents (Class 501/905)
  • Patent number: 8828511
    Abstract: The invention relates to a hollow glass article having, for a thickness of 5 mm, an overall light transmission greater than or equal to 70%, said overall light transmission being calculated by taking into consideration the illuminant C as defined by the ISO/CIE 10526 standard and the CIE 1931 standard colorimetric observer as defined by the ISO/CIE 10527 standard, and a filtering power greater than or equal to 65%, especially 70%, said filtering power being defined as being equal to the value of 100% reduced by the arithmetic mean of the transmission between 330 and 450 nm, said article having a chemical composition of soda-lime-silica type, which comprises the following optical absorbent agents in a content that varies within the weight limits defined below: Fe2O3 (total iron) 0.01 to 0.15% TiO2 0.5 to 3% Sulfides (S2?) 0.0010 to 0.0050%.
    Type: Grant
    Filed: June 12, 2009
    Date of Patent: September 9, 2014
    Assignee: Saint-Gobain Emballage
    Inventor: Neill McDonald
  • Patent number: 8647539
    Abstract: The present invention provides a process for producing a near infrared cut filter glass by melting and forming a glass material blended; and from 0.1 to 5% as represented by mass percentage of an oxidant of at least of a nitrate compound, a sulfate compound, a peroxide, a perchlorate and chloric acid as well as a near infrared cut filter glass.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: February 11, 2014
    Assignee: Asahi Glass Company, Limited
    Inventor: Hidetoshi Suzuki
  • Patent number: 8318054
    Abstract: The present invention provides a dark green colored glass composition having a soda-lime-silica glass composition, wherein the coloring compounds comprises in weight percentage: from 0.71 to 1.50% of total iron expressed as Fe2O3; from 22 to 30% of ferrous-ferric ratio and from 0.15 to 0.50% of expressed as FeO; from 0.10 to 0.20% of SO3 without affecting the refining properties and ability of the SO3 to eliminate bubbles; about 0 to 1.0 wt. % TiO2; about 0.0004 to 0.03 wt. % Cr2O3; and also 0.0004 to 0.015 wt. % CuO.
    Type: Grant
    Filed: June 2, 2010
    Date of Patent: November 27, 2012
    Assignee: Vidrio Plano de Mexico, S.A. de C.V.
    Inventors: José Guadalupe Cid-Aguilar, Roberto Marcos Cabrera-Llanos, Miguel Angel Kiyama-Rodriguez
  • Patent number: 7994083
    Abstract: Disclosed are methods for hydrogen loading silica glass and silica glass comprising loaded H2. The methods can lead to H2 gradient in the glass material. Alternatively, the method may involve the use of varying H2 partial pressure of H2 in the atmosphere. Both can result in expedited hydrogen loading process.
    Type: Grant
    Filed: September 15, 2006
    Date of Patent: August 9, 2011
    Assignee: Corning Incorporated
    Inventors: Brian Lee Harper, Kenneth Edward Hrdina, John Edward LaSala
  • Patent number: 7393802
    Abstract: An ultraviolet/infrared absorbent low transmittance glass is formed of base glass containing 65 to 80 wt. % SiO2; 0 to 5 wt. % Al2O3; greater than 2.1 to less than or equal to 10 wt. % MgO; 5 to 15 wt. % CaO wherein a total amount of MgO and CaO is 7 to 15 wt. %; 10 to 18 wt. % Na2O; 0 to 5 wt. % K2O wherein a total amount of Na2O and K2O is 10 to 20 wt. %; and 0 to 5 wt. % B2O3, and colorants including 1.25 to 2.2 wt. % total iron oxide (T-Fe2O3) expressed as Fe2O3; 0.001 to 0.018 wt. % CoO; 0 to 0.0004 wt. % Se; and 0.028 to 0.2 wt. % NiO, wherein the glass has a turquoise blue or deep green color.
    Type: Grant
    Filed: March 16, 2004
    Date of Patent: July 1, 2008
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Hiromitsu Seto, Yukihito Nagashima, Isamu Kuroda, Shigekazu Yoshii
  • Patent number: 7151065
    Abstract: A grey glass composition employing in its colorant portion at least iron (Fe2O3/FeO), cerium, cobalt and selenium is provided. The glass allows high visible transmission, and satisfactory IR and UV absorption, while at the same time achieving desired grey color. In certain example embodiments, the colorant portion includes, or may consist essentially of: total iron (expressed as Fe2O3): ?0.25 to 0.70% cerium oxide: ?0.01 to 1.0% selenium: 0.0001 to 0.05% cobalt oxide: 0.0001 to 0.05% titanium oxide: ???0 to 1.0% glass redox: >=0.30.
    Type: Grant
    Filed: July 21, 2003
    Date of Patent: December 19, 2006
    Assignee: Guardian Industries Corp.
    Inventors: Scott V. Thomsen, Richard Hulme, Leonid Landa, Ksenia A. Landa
  • Patent number: 7094716
    Abstract: The present invention is a green soda-lime-silica glass composition. The composition comprises 68 to 75% SiO2, 10 to 18% Na2O, 5 to 15% CaO, 0 to 10% MgO, 0 to 5% Al2O3, and 0 to 5% K20, where CaO+MgO is 6 to 15% and Na2O+K20 is 10 to 20%, and colorants comprising: 0.3 to 0.8 wt. % total iron as Fe2O3 wherein the ratio of FeO/total Fe as Fe2O3 is 0.35 to 0.62; 0.05 to 0.5 wt. % manganese compound as MnO2; 0 to 0.1 wt. % titanium oxide as TiO2; and 0 to 1 wt. % cerium oxide as CeO2. The colored glass has the following spectral properties at 4.0 mm. thickness: 65 to 81% light transmittance using Illuminant A (LTA) and using Illuminant C has a dominant wavelength of 494 to 555 nanometers with an excitation purity of 2 to 9%.
    Type: Grant
    Filed: October 4, 2002
    Date of Patent: August 22, 2006
    Assignee: Automotive Components Holdings, LLC
    Inventors: Edward Nashed Boulos, James Victor Jones
  • Patent number: 7033967
    Abstract: The invention relates to a coloured soda-lime glass of blue hue, containing more than 2 wt. % of MgO, more than 1.1 wt. % of Fe2O3, less than 0.53 wt. % of FeO and less than 0.13 wt. % of MnO2, and presenting under Illuminant A and for a glass thickness of 4 mm, a transmission factor (TLA4) higher than 15%, a selectivity (SE4) higher than 1.2 and a dominant wavelength (?D) and a purity of excitation (P) such that they are located in the CIE chromaticity co-ordinate diagram inside a triangle whereof the apices are defined by the point representing the illuminant source C and the points whereof the co-ordinates (?D, P) are (490,19) and (476,49) respectively. Said glass is particularly suitable for motor vehicle side windows, rear windows and sun roof.
    Type: Grant
    Filed: February 5, 2004
    Date of Patent: April 25, 2006
    Assignee: Glaverbel
    Inventors: Marc Foguenne, Dominique Coster
  • Patent number: 7015162
    Abstract: The invention relates to blue colored sodiocalcic glass. It contains 0.15 to 1.1 wt. % Fe2O3, has a redox that does not exceed 45%, exhibits a dominant wavelength (?D) in the range of 490 and 493 nm and a luminous transmission (TLA4) in addition to an excitation purity (P) satisfying the relation P>?0.3×TLA4+24.5. The inventive glass is particularly suitable for windscreens, side windows and rear-window defoggers in motor vehicles and glazing in buildings.
    Type: Grant
    Filed: February 10, 2004
    Date of Patent: March 21, 2006
    Assignee: Glaverbel
    Inventors: Dominique Coster, Laurent Delmotte, Marc Foguenne
  • Patent number: 6995102
    Abstract: A blue glass composition comprises a soda-lime-silica base and a colorant portion consisting essentially of about 0.4 to 0.65 weight percent total iron oxide, about 0.1 to 0.3 weight percent manganese oxide, and cobalt oxide in an amount effective to produce a cobalt concentration of about 0.0002 to 0.0013 weight percent (about 2 to 13 ppm). The glass is characterized by a ratio of ferrous oxide to total iron oxide between about 0.43 and 0.58. The glass composition exhibits a combination of high visible transmittance, high infrared absorption and enhanced blue coloration. This is attributed in large part to the combination of ferrous oxide and cobalt oxide and to the effect of manganese oxide in reducing iron sulfide formation and thereby avoiding amber coloration.
    Type: Grant
    Filed: July 16, 2003
    Date of Patent: February 7, 2006
    Assignee: Visteon Global Technologies, Inc.
    Inventors: James V. Jones, Edward N. Boulos
  • Patent number: 6953759
    Abstract: A glass having a visible transmission of no greater than 28% and low IR transmission, and employing a colorant portion: total iron (expressed as Fe2O3): ?0.7 to 1.8% cobalt oxide (e.g., Co3O4): 0.001 to 1.0% titanium oxide (e.g., TiO2): ?0.25 to 3.0% selenium (e.g., Se): ???0 to 0.0020% chromium oxide (e.g., Cr2O3): ???0 to 0.010%.
    Type: Grant
    Filed: August 26, 2002
    Date of Patent: October 11, 2005
    Assignee: Guardian Industries Corp.
    Inventors: Ksenia A. Landa, Leonid Landa, Richard Hulme
  • Patent number: 6903036
    Abstract: An infrared absorption filter consisting of 70 to 98 mol % of SiO2, 1 to 12 mol % of CuO and 1 to 18 mol % of a network modifier oxide than CuO or CdO is provided. A process of fabricating an infrared absorption filter is also provided. The process comprises introducing a divalent copper compound and a compound of a metal species acting as a network modifier oxide in the form of metal ions into a wet gel. The wet gel can be dipped in a dipping solution to precipitate the divalent copper compound and the compound of a metal species acting as the network modifier oxide in the wet gel. The wet gel can be dried and heated, thereby obtaining an infrared absorption glass. The infrared absorption glass can be cut and polished, thereby fabricating a filter.
    Type: Grant
    Filed: December 31, 2002
    Date of Patent: June 7, 2005
    Assignee: Olympus Corporation
    Inventors: Yoshinobu Akimoto, Hiroaki Kinoshita
  • Patent number: 6821918
    Abstract: The present invention is a bronze and gray glass composition. The composition comprises 68 to 75% SiO2, 10 to 18% Na2O, 5 to 15% CaO, 0 to 10% MgO, 0 to 5% Al2O3, and 0 to 5% K2O, where CaO+MgO is 6 to 15% and Na2O+K2O is 10 to 20%, and colorants comprising: 0.22 to 0.39 wt. % total iron as Fe2O3 wherein the ratio of FeO/total Fe as Fe2O3 is 0.35 to 0.64; 0.1 to 0.5 wt. % manganese compound as MnO2; 0 to 1.2 wt. % cerium oxide as CeO2; and 2 to 10 ppm selenium, and 0 to 20 ppm cobalt as cobalt oxide. The colored glass has the following spectral properties at 4.0 mm. thickness: 65 to 78% light transmittance using Illuminant A (LTA) and using Illuminant C has a dominant wavelength of 493 to 577 nanometers with an excitation purity up to 7%.
    Type: Grant
    Filed: November 21, 2002
    Date of Patent: November 23, 2004
    Assignee: Visteon Global Technologies, Inc.
    Inventors: Edward Nashed Boulos, James Victor Jones
  • Patent number: 6800575
    Abstract: The invention concerns a coloured soda-lime glass deep coloured with a green-to-blue shade. It contains 0.40 to 0.52 wt. % of FeO, present under illuminant A and for a glass thickness of 4 mm, a light transmittance (TLA4) less than 70%, a selectivity (SE4) higher than 1.65 and an ultraviolet radiation transmittance (TUV4) less than 8%. Said glass is particularly suited for lateral rear glazing and rear glazing for motor vehicles.
    Type: Grant
    Filed: March 26, 2001
    Date of Patent: October 5, 2004
    Assignee: Glaverbel, S.A.
    Inventors: Dominique Coster, Marc Foguenne
  • Patent number: 6769273
    Abstract: A silica glass member manufacturing method of the present invention includes the steps of making a silicon compound react in oxyhydrogen flame using a burner having a multi-tubular structure to obtain fine silica glass particles, depositing the fine silica glass particles on a support rotating and placed to oppose the burner to obtain a silica glass ingot with a temperature distribution in at least one plane perpendicular to a rotational axis of the silica glass ingot, the temperature distribution being symmetrical with respect to the rotational axis and having a maximal value between a center and a peripheral portion of the plane, and obtaining a distribution of signed birefringence values on the basis of birefringence values and directions of phase advance axes measured at a plurality of points in the plane perpendicular to the rotational axis of the silica glass ingot and cutting, from the silica glass ingot, a silica glass member whose signed birefringence values monotonously increase from the center to t
    Type: Grant
    Filed: March 5, 2001
    Date of Patent: August 3, 2004
    Assignee: Nikon Corporation
    Inventors: Kazuhiro Nakagawa, Hiroyuki Hiraiwa
  • Patent number: 6762875
    Abstract: A method for creating refractive index changes in a substrate is provided by irradiating the substrate with infrared (IR) or visible light radiation. Ultra-violet (UV) radiation is generated in the substrate responsive to the IR or visible light radiation such that the change in the refractive index of the substrate is generated responsive to the UV radiation. Preferably, the substrate comprises a glass doped with rare earth ions.
    Type: Grant
    Filed: February 7, 2002
    Date of Patent: July 13, 2004
    Assignee: Corning Incorporated
    Inventor: Bryce N. Samson
  • Patent number: 6672109
    Abstract: A silica glass member for use with a light having a specific wavelength of 250 nm or shorter, in which the difference in the maximum and the minimum values of hydroxyl group concentration as measured in a plurality of points within a plane vertical to an optical axis whose center is the crossing point of its optical axis with the optical axis of the silica glass member is 50 ppm or lower; and in which the plurality of signed birefringence values obtained based on the birefringence values measured on several points within a plane vertical to an optical axis whose center is the crossing point of its optical axis with the optical axis of the silica glass member and the direction of the fast axis fall within a range of from −2.0 to +2.0 nm/cm. Thus, a silica glass member having high optical transmittance and a high resistance against ultraviolet radiations is provided.
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: January 6, 2004
    Assignee: Nikon Corporation
    Inventor: Hiroyuki Hiraiwa
  • Patent number: 6656862
    Abstract: The present invention provides a blue colored, infrared and ultraviolet absorbing glass composition having a luminous transmittance of up to 60 percent. The glass uses a standard soda-lime-silica glass base composition and additionally iron and cobalt, and optionally selenium and/or titanium, as infrared and ultraviolet radiation absorbing materials and colorants. The glass of the present invention has a color characterized by a dominant wavelength in the range of 480 to 489 nanometers and an excitation purity of at least 8 percent at a thickness of 0.160 inches (4.06 millimeters). In one embodiment of the invention, the glass composition of a blue colored, infrared and ultraviolet radiation absorbing soda-lime-silica glass article includes a solar radiation absorbing and colorant portion consisting essentially of 0.9 to 2.0 percent by weight total iron, 0.15 to 0.65 percent by weight FeO, 90 to 250 PPM CoO, and optionally up to 12 PPM Se and up to 0.9 wt % TiO2, and preferably 1 to 1.
    Type: Grant
    Filed: May 12, 1998
    Date of Patent: December 2, 2003
    Assignee: PPG Industries Ohio, Inc.
    Inventors: John F. Krumwiede, Larry J. Shelestak
  • Patent number: 6649326
    Abstract: The invention provides a UV below 200 nm lithography method. The invention includes providing a below 200 nm radiation source for producing <200-nm light, providing a plurality of mixed cubic fluoride crystal optical elements, with the fluoride crystals comprised of a combination of alkaline earth cations having different optical polarizabilities such as to produce an overall isotropic polarizability which minimizes the fluoride crystal spatial dispersion below 200 nm, transmitting <200-nm light through the cubic fluoride crystal optical elements, forming a lithography pattern with the light, reducing the lithography pattern and projecting the lithography pattern with the cubic fluoride crystal optical elements onto a UV radiation sensitive lithography printing medium to form a printed lithographic pattern. The invention includes making the mixed fluoride crystals and forming optical element therefrom.
    Type: Grant
    Filed: June 21, 2002
    Date of Patent: November 18, 2003
    Assignee: Corning Incorporated
    Inventors: Douglas C. Allan, Nicholas F. Borrelli, Charlene M. Smith, Robert W. Sparrow
  • Patent number: 6622524
    Abstract: Foodstuffs filled in glass containers undergo a change in taste under the influence of light. In order to combat such changes in taste the glass according to the invention contains vanadium pentoxide. Since pure vanadium pentoxide is relative expensive, the invention proposes a way of using a mixture of vanadium pentoxide and phosphorous oxide which is available as an economical aggregate. This type of glass is preferably used to accomodate foodstuffs. The glass containing vanadium pentoxide and phosphorous oxide is particularly suited for bottles to hold beer. Such bottles exhibit particularly effective light protection properties when they are made of so-called white glass.
    Type: Grant
    Filed: July 20, 2001
    Date of Patent: September 23, 2003
    Assignee: Nienburger Glas GmbH
    Inventors: Hans-Jürgen Barklage-Hilgefort, Wolfgang Cieleback
  • Patent number: 6550277
    Abstract: The invention concerns a quartz glass body for an optical component for the transmission of UV radiation with a wavelength of 250 nm and less, especially for a wavelength of 157 nm, as well as a process for the manufacture of the quartz glass body where fine quartz glass particles are formed by flame hydrolysis of a silicon compound, deposited and vitrified. Suitability of a quartz glass as represented by high base transmission and radiation resistance depends on structural properties caused by local stoichiometric deviations, and on the chemical composition. The quartz glass body according to the inventions is distinguished by a uniform base transmission (relative change of base transmission ≦1%) in the wavelength range from 155 nm to 250 nm (radiation penetration depth of 10 mm) of at least 80%, a low OH content (less than 10 ppm by weight) and a glass structure substantially free from oxygen defect centers.
    Type: Grant
    Filed: November 10, 2000
    Date of Patent: April 22, 2003
    Assignee: Heraeus Quarzglas GmbH & Co. KG
    Inventors: Bruno Uebbing, Jan Vydra
  • Patent number: 6524713
    Abstract: The ultraviolet/infrared absorbent low transmittance glass has an almost neutral color such as greenish gray, low visible light transmittance, low total solar energy transmittance, and low ultraviolet transmittance, and is suitable for a rear window of a vehicle and capable of protecting privacy. The glass consists of base glass including: 65 to 80 wt. % SiO2; 0 to 5 wt. % Al2O3; 0 to 10 wt. % MgO; 5 to 15 wt. % CaO wherein a total amount of MgO and CaO is between 5 and 15 wt. %; 10 to 18 wt. % Na2O; 0 to 5 wt. % K2O wherein a total amount of Na2O and K2O is between 10 and 20 wt. %; and 0 to 5 wt. % B2O3, and colorants including: 1.25 to 1.5 wt. % total iron oxide (T—Fe2O3) expressed as Fe2O3; 0.01 to 0.019 wt. % CoO; more than 0.0008 wt. % and equal to or less than 0.003 wt. % Se; and 0.055 to 0.1 wt. % NiO.
    Type: Grant
    Filed: June 21, 2001
    Date of Patent: February 25, 2003
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Hiromitsu Seto, Yukihito Nagashima, Shigekazu Yoshii
  • Publication number: 20030029203
    Abstract: The present invention relates generally to UV (ultraviolet) photosensitive bulk glass, and particularly to batch meltable alkali boro-alumino-silicate and germanosilicate glasses. The photosensitive bulk glass of the invention exhibits photosensitivity to UV wavelengths below 300 nm.
    Type: Application
    Filed: June 28, 2002
    Publication date: February 13, 2003
    Inventors: Nicholas F. Borrelli, George B. Hares, Charlene M. Smith
  • Patent number: 6499317
    Abstract: A synthetic quartz glass for optical use, to be used by irradiation with light within a range of from the ultraviolet region to the vacuum ultraviolet region, which contains fluorine, which has a ratio of the scattering peak intensity of 2250 cm−1 (I2250) to the scattering peak intensity of 800 cm−1 (I800), i.e. I2250/I800, of at most 1×10−4 in the laser Raman spectrum, and which has an absorption coefficient of light of 245 nm of at most 2×10−3 cm−1.
    Type: Grant
    Filed: October 17, 2000
    Date of Patent: December 31, 2002
    Assignee: Asahi Glass Company, Limited
    Inventors: Yoshiaki Ikuta, Shinya Kikugawa, Noriaki Shimodaira, Akio Masui, Shuhei Yoshizawa
  • Publication number: 20020198094
    Abstract: The present invention provides a blue colored, infrared and ultraviolet absorbing glass composition having a luminous transmittance of up to 60 percent. This glass composition can form transparent glass panels that have varying limited LTA from one another as panel sets for mounting in automobiles. The glass uses a standard soda-lime-silica glass base composition and additionally iron and cobalt, and optionally selenium and/or titanium, as infrared and ultraviolet radiation absorbing materials and colorants. The glass of the present invention has a color characterized by a dominant wavelength in the range of 480 to 489 nanometers and an excitation purity of at least 8 percent at a thickness of 0.160 inches (4.06 millimeters). In one embodiment of such a blue colored, infrared and ultraviolet radiation absorbing soda-lime-silica glass article includes a solar radiation absorbing and colorant portion having 0.9 to 2.0 percent by weight total iron, 0.15 to 0.
    Type: Application
    Filed: January 14, 2002
    Publication date: December 26, 2002
    Inventors: Mehran Arbab, Larry J. Shelestak, Dennis G. Smith
  • Publication number: 20020160901
    Abstract: A grey glass composition employing as its colorant portion at least iron (Fe2O3/FeO) and erbium oxide (e.g., Er2O3), and also preferably selenium and cobalt. An exemplary colorant portion for use in a glass composition (with a soda lime silica or other suitable base glass) includes, by weight percentage: 1 Total iron (expressed as Fe2O3): 0.1 to 0.6% erbium oxide (e.g., Er2O3): 0.3 to 1.5% selenium (Se): 0.0002 to 0.0010% cobalt oxide (e.g., Co3O4): 0.0005 to 0.0018% titanium oxide (e.g., TiO2): 0.0 to 1.0% boron oxide (e.g., B2O3): 0.0 to 2.
    Type: Application
    Filed: April 3, 2001
    Publication date: October 31, 2002
    Inventors: Ksenia A. Landa, Leonid Landa, Scott V. Thomsen, Anthony V. Longobardo
  • Patent number: 6455452
    Abstract: The present invention provides a bronze colored, infrared and ultraviolet absorbing glass composition having a luminous transmittance of up to 60 percent. The glass uses a standard soda-lime-silica glass base composition and additionally iron and selenium, and optionally cobalt, as infrared and ultraviolet radiation absorbing materials and colorants. The glass of the present invention has a luminous transmittance (LTA) of up to 60 percent and its color is characterized by a dominant wavelength in the range of 560 to 590 nanometers and an excitation purity of 12 to 75% at a thickness of 0.160 inches (4.06 mm). In one embodiment of the invention, the glass composition of a bronze colored, infrared and ultraviolet radiation absorbing soda-lime-silica glass article includes a colorant portion having 0.7 to 2.2 percent by weight total iron, 0.15 to 0.5 percent by weight FeO, 3 to 100 PPM Se, and optionally up to 200 PPM CoO, and preferably 1.1 to 1.4 percent by weight total iron, 0.24 to 0.
    Type: Grant
    Filed: February 22, 2000
    Date of Patent: September 24, 2002
    Assignee: PPG Industries Ohio, Inc.
    Inventor: John F. Krumwiede
  • Patent number: 6451719
    Abstract: A silica glass optical material for transmitting light with a wavelength of from 155 to 195 nm emitted from an excimer laser or an excimer lamp, which comprises silica glass optical material of ultrahigh purity, containing from 1 to 100 wtppm of OH groups, from 5×1016 to 5×1019 molecules/cm3 of H2, and from 10 to 10,000 wtppm of F, but substantially free from halogens other than F, and having a fluctuation in refractive index, &Dgr;n, of from 3×10−6 to 3×10−7.
    Type: Grant
    Filed: October 19, 2000
    Date of Patent: September 17, 2002
    Assignees: Heraeus Quarzglas GmbH & Co. KG, Shin-Etsu Quartz Products Co., Ltd.
    Inventor: Shigeru Yamagata
  • Publication number: 20020123419
    Abstract: The present invention relates generally to UV (ultraviolet) photosensitive bulk glass, and particularly to batch meltable alkali boro-alumino-silicate glasses. The photosensitive bulk glass of the invention exhibits photosensitivity to UV wavelengths below 300 nm. The photosensitivity of the alkali boro-alumino-silicate bulk glass to UV wavelengths below 300 nm provide for the making of refractive index patterns in the glass. With a radiation source below 300 nm, such a laser, refractive index patterns are formed in the glass. The inventive photosensitive optical refractive index pattern forming bulk glass allows for the formation of patterns in glass and devices which utilize such patterned glass.
    Type: Application
    Filed: March 15, 2002
    Publication date: September 5, 2002
    Inventors: Nicholas F. Borrelli, George B. Hares, Charlene M. Smith
  • Patent number: 6420290
    Abstract: The object of the present invention is colorless inorganic glasses, as well as products manufactured from said glasses. Said glasses are of the type containing copper halides or copper cadmium halides and having a sharp optical absorption cutoff between 370 nm and 425 nm essentially having the composition below, expressed in cationic percentages: 23-73% SiO2 15-45% B2O3  0-24% Al2O3  0-12% Li2O  0-20% Na2O  0-12% K2O 0-5% CaO + BaO + SrO 0.125-1%    Cu2O 0-1% CdO 0-5% ZrO2 with   0-1.75% Cl 0.
    Type: Grant
    Filed: February 11, 2000
    Date of Patent: July 16, 2002
    Assignee: Corning S.A.
    Inventors: Yves A. H. Brocheton, Christophe Remy
  • Patent number: 6413893
    Abstract: The present invention provides a green colored, infrared and ultraviolet absorbing glass article having a luminous transmittance of up to 60 percent. The composition of the glass article uses a standard soda-lime-silica glass base composition and additionally iron, cobalt, selenium, and chromium, and titanium, as infrared and ultraviolet radiation absorbing materials and colorants. The glasses of the present invention have a color characterized by a dominant wavelength in the range of about 480 to 565 nanometers, preferably about 495 to 560 nanometers, with an excitation purity of no higher than about 20 percent, preferably no higher than about 10 percent, and more preferably no higher than about 7 percent. The glass compositions may be provided with different levels of spectral performance depending on the particular application and desired luminous transmittance.
    Type: Grant
    Filed: September 3, 1999
    Date of Patent: July 2, 2002
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Larry J. Shelestak, Robert B. Heithoff, Andrew Calabrese, John F. Krumwiede, Anthony V. Longobardo
  • Patent number: 6408650
    Abstract: The invention is a method of retaining selenium in a lass containing selenium by including a manganese compound and not including nitrates or nitrites routinely used in the industry to retain selenium. Particularly, a preferred embodiment involves manufacturing a gray soda-lime-silica glass composition including selenium as a colorant, the components of the gray soda-lime-silica glass have colorants consisting essentially of: greater than 0.9 to 1.9 wt. % total iron oxide as Fe2O3; 0.10 to 1.00 wt. % manganese compound as MnO2; 0.0010 to 0.0060 wt. % selenium as Se; 0.002 to 0.025 wt. % cobalt oxide as Co, and 0 to 1.0 wt. % titanium oxide as TiO2 which are combined and melted to make the glass composition. The glass composition has at 4.0 mm. thickness: 10 to 55% light transmittance using Illuminant A, less than 25% ultra violet transmittance, and less than 50% infra red transmittance.
    Type: Grant
    Filed: December 10, 1997
    Date of Patent: June 25, 2002
    Assignee: Ford Global Technologies, Inc.
    Inventors: Edward Nashed Boulos, James Victor Jones
  • Patent number: 6399526
    Abstract: A quartz glass which would not become a source for the contamination even if it contains metallic impurities. This quartz glass includes a region where a concentration of E′ center as measured by means of an. electron spin resonance analysis is 3×1019 cm−3 or more. This quartz glass can be manufactured by a method including the steps of forming an initial quartz glass by melting and quenching a raw material for quartz glass, and implanting therein an ion, which is capable of entering into an SiO2 network of the initial quartz glass and substantially incapable of externally diffusing, to increase a concentration of E′ center in at least part of the initial quartz glass. This quartz glass can be manufactured by a method making use of a quartz glass raw material containing 0.01 to 0.1% by weight of-silicon, by a method of irradiating ultraviolet ray to the initial quartz glass, or by a method of giving an abrasion damage to the surface of the initial quartz glass by means of sand blast.
    Type: Grant
    Filed: June 4, 2001
    Date of Patent: June 4, 2002
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Ceramics, Ltd.
    Inventors: Hiroshi Tomita, Tsuneo Ishii, Chie Hongo
  • Patent number: 6395660
    Abstract: An ultraviolet/infrared absorbent low transmittance glass consists of base glass, and colorants. The base glass comprises 65 to 80 wt. % SiO2; 0 to 5 wt. % Al2O3; greater than 2 to less than or equal to 10 wt. % MgO; 5 to 15 wt. % CaO wherein a total amount of MgO and CaO is 7 to 15 wt. %; 10 to 18 wt. % Na2O; 0 to 5 wt. % K2O wherein a total amount of Na2O and K2O is 10 to 20 wt. %; and 0 to 5 wt. % B2O3. The colorants without Se is formed of 1.25 to 2.2 wt. % total iron oxide (T—Fe2O3) expressed as Fe2O3; 0.001 to 0.03 wt. % CoO; and 0.003 to 0.2 wt. % NiO. The glass has a turquoise blue or deep green color, and exhibits low or middle visible light transmittance, low total solar energy transmittance and low ultraviolet transmittance.
    Type: Grant
    Filed: March 14, 2000
    Date of Patent: May 28, 2002
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Hiromitsu Seto, Yukihito Nagashima, Isamu Kuroda, Shigekazu Yoshii
  • Patent number: 6342460
    Abstract: The invention relates to a glass excellent in infrared absorption capability and corrosion resistance, and its fabrication process. A compound of divalent copper and a compound of a metal species for a network modifier oxide are introduced in a wet gel. Then, the wet gel is dipped in a dipping solution having a low solubility with respect to the compound of divalent copper and the compound of a metal species for a network modifier oxide for the precipitation in the wet gel of the divalent-t copper compound and the compound of a metal species for a network modifier oxide, followed by drying and firing. Thus, an infrared absorbing glass comprising 70 to 98 mol % of SiO2, 1 to 12 mol % of CuO and 1 to 18 mol % of a network modifier oxide other than CuO is fabricated.
    Type: Grant
    Filed: June 21, 1999
    Date of Patent: January 29, 2002
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Yoshinobu Akimoto, Hiroaki Kinoshita
  • Patent number: 6339505
    Abstract: A lens assembly with materials that densify and rarefy as a function of radiation dose. The lens assembly can be provided for use in photolithographic exposure tools. The combination of densifying and rarefying materials in the lens elements of exposure tools compensates for changes in the index of refraction of the materials. The lens assembly of the present invention corrects, by design, for radiation-induced changes in the indices of refraction of the lens element materials. By compensating for radiation-induced changes, the lens assembly has a longer useful lifetime.
    Type: Grant
    Filed: June 26, 2000
    Date of Patent: January 15, 2002
    Assignee: International Business Machines Corporation
    Inventor: Allan Keith Bates
  • Publication number: 20020004173
    Abstract: The present invention is a method of making a lithography photomask and photomask blank. The method of making the lithography photomask and photomask blank includes providing a silicon oxyfluoride glass tube having an OH content less than 50 ppm. The method further includes cutting the silicon oxyfluoride glass tube, flattening the silicon oxyfluoride glass tube, and forming the flattened cut silicon oxyfluoride glass tube into a photomask blank having a planar surface. The present invention includes a glass lithography mask preform. The glass lithography mask preform is a longitudinal silicon oxyfluoride glass tube that has an OH content ≦10 ppm, a F wt. % concentration ≧0.5 wt. %.
    Type: Application
    Filed: August 23, 2001
    Publication date: January 10, 2002
    Inventors: George Edward Berkey, Lisa Anne Moore, Michelle Diane Pierson
  • Patent number: 6335299
    Abstract: A soda-lime glass which has a gray-green color, an excitation purity (P) of more than 7%, a light transmission of greater than 30% under Illuminant A and for a glass thickness of 4 mm, a selectivity (SE4) of greater than 1.55, and an ultraviolet radiation transmission (TUV4) of less than 10%, and which comprises soda-lime glass forming constituents as main constituents and coloring agents consisting essentially of, in weight %, more than 0.25 and less than 0.4% of FeO, from 0.9 to 1.8% of Fe2O3, from 0.001 to 0.010% of Co, from 0.0100 to 0.024% of Cr2O3, and from 0 to 0.2% of V2O5, in which the total quantity of iron is expressed as Fe2O3.
    Type: Grant
    Filed: June 23, 1998
    Date of Patent: January 1, 2002
    Assignee: Glaverbel S.A.
    Inventors: Marc Foguenne, Camille Dupont
  • Patent number: 6333287
    Abstract: A colored glass is disclosed in which the generation of nickel sulfide stones has been eliminated or diminished without impairing glass appearance or productivity. The colored glass contains, in % by weight, 0.5-4% total iron oxide (T-Fe2O3) in terms of Fe2O3 and 0.0002 to less than 0.01% molybdenum in terms of Mo.
    Type: Grant
    Filed: May 18, 2000
    Date of Patent: December 25, 2001
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventor: Hiromitsu Seto
  • Patent number: 6333283
    Abstract: A process of manufacturing a silica glass article comprising the steps of: (1) irradiating a silica glass article with electromagnetic waves to generate defects therein; and (2) immersing the thus irradiated silica glass article in an atmosphere comprising a hydrogen gas, thereby providing the resulting silica glass article with a characteristic that is effective for preventing it substantially from increasing its absorption within an ultraviolet region due to ultraviolet ray irradiation. Also disclosed are a silica glass article or a glass fiber produced according to the manufacturing process.
    Type: Grant
    Filed: August 6, 1999
    Date of Patent: December 25, 2001
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Akira Urano, Toshio Danzuka, Tatsuhiko Saito, Yasuhiko Shishido, Masaharu Mogi, Michihisa Kyoto
  • Patent number: 6320661
    Abstract: A method is provided for evaluating a transmittance of an optical member for ultraviolet use, which is an object of measurement. The method includes the steps of cleaning the object of measurement, measuring a transmittance of the object of measurement within a predetermined time period from completion of the cleaning during which a rate of decrease in the transmittance of the object of measurement remains substantially constant, and correcting the transmittance measured in the step of measuring to a transmittance at an evaluation time arbitrarily selected within the predetermined time period in accordance with the constant rate of decrease in the transmittance and a time at which the transmittance is measured.
    Type: Grant
    Filed: March 31, 2000
    Date of Patent: November 20, 2001
    Assignee: Nikon Corporation
    Inventors: Akiko Yoshida, Norio Komine, Hiroki Jinbo
  • Patent number: 6313053
    Abstract: The present invention provides a blue colored glass using a standard soda-lime-silica glass base composition and additionally iron and cobalt, and optionally chromium, as solar radiation absorbing materials and colorants. In particular, the blue colored glass includes about 0.40 to 1.0 wt. % total iron, preferably about 0.50 to 0.75 wt. %, about 4 to 40 PPM CoO, preferably about 4 to 20 PPM, and 0 to 100 PPM Cr2O3. The redox ratio for the glass of the present invention is greater than 0.35 up to about 0.60, and preferably between about 0.36 to 0.50. In one particular embodiment of the invention, the glass has a luminous transmittance of at least 55% and a color characterized by a dominant wavelength of 485 to 489 nanometers and an excitation purity of about 3 to 18 percent. In another embodiment of the invention, the glass has a luminous transmittance of at least 65% at a thickness of about 0.154 inches (3.
    Type: Grant
    Filed: April 9, 1998
    Date of Patent: November 6, 2001
    Assignee: PPG Industries Ohio, Inc.
    Inventor: Larry J. Shelestak
  • Publication number: 20010025004
    Abstract: The ultraviolet/infrared absorbent low transmittance glass has a grayish green color shade, low visible light transmittance, low total solar energy transmittance, and low ultraviolet transmittance, and is suitable for a rear window of a vehicle and capable of protecting privacy. The glass consists of base glass including: 65 to 80 wt. % SiO2; 0 to 5 wt. % Al2O3; 0 to 10 wt. % MgO; 5 to 15 wt. % CaO wherein a total amount of MgO and CaO is between 5 and 15 wt. %; 10 to 18 wt. % Na2O; 0 to 5 wt. % K2O wherein a total amount of Na2O and K2O is between 10 and 20 wt. %; and 0 to 5 wt. % B2O3, and colorants including: more than 0.95 wt. % and 1.2 wt. % total iron oxide (T-Fe2O3) expressed as Fe2O3; 0.001 to 0.0180 wt. % CoO; 0.0001 to 0.0008 wt. % Se; and 0.003 to 0.2 wt. % NiO.
    Type: Application
    Filed: March 27, 2001
    Publication date: September 27, 2001
    Applicant: NIPPON SHEET GLASS CO., LTD
    Inventors: Hiromitsu Seto, Yukihito Nagashima, Shigekazu Yoshii
  • Patent number: 6287998
    Abstract: An ultraviolet/infrared absorbent low transmittance glass is formed of a base glass and colorants. The base glass contains 65 to 80 wt. % SiO2; 0 to 5 wt. % Al2O3; 0 to 10 wt. % MgO; 5 to 15 wt. % CaO wherein a total amount of MgO and CaO is between 5 and 15 wt. %; 10 to 18 wt. % Na2O; 0 to 5 wt. % K2O wherein a total amount of Na2O and K2O is in a range of 10 and 20 wt. %; and 0 to 5 wt. % B2O3. The colorants contains more than 1.2 wt. % and not more than 1.5 wt. % total iron oxide (T-Fe2O3) expressed as Fe2O3; equal to or more than 0.003 wt. % and less than 0.015 wt. % CoO; 0.0009 to 0.005 wt. % Se; 0.0005 to 0.05 wt. % NiO; and 0 to 0.2 wt. % of TiO2, wherein FeO expressed as Fe2O3 is between 15 and 50 wt. % of T-Fe2O3. The ultraviolet/infrared absorbent low transmittance glass has a bronze or gray color shade, low visible light transmittance, low solar energy transmittance and low ultraviolet transmittance, so that it is useful for a privacy protecting glass in a rear window of a vehicle.
    Type: Grant
    Filed: December 2, 1999
    Date of Patent: September 11, 2001
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Hiromitsu Seto, Yukihito Nagashima, Shigekazu Yoshii
  • Patent number: 6258740
    Abstract: The invention relates to an ultraviolet ray absorbing soda-lime glass. This glass contains less than 0.10 wt % of iron in terms of Fe2O3, which is optionally contained as an impurity in the glass, 0.7-2.6 wt % of CeO2, 0-1.3 wt % of TiO2, 0-0.12 wt % of V2O5, 0.08-0.30 wt % of sulfur in terms of SO3, and 0-0.0025 wt % of CoO. The glass at a thickness of 5 mm is not higher than 10% in ultraviolet radiation transmittance, is not lower than 80% in visible light transmittance, and is from 530 to 575 nm in dominant wavelength. The glass is transparent and clear, superior in ultraviolet ray absorption capability, and high in visible light transmittance.
    Type: Grant
    Filed: July 29, 1999
    Date of Patent: July 10, 2001
    Assignee: Central Glass Company, Limited
    Inventors: Hiroshi Machishita, Kazutoshi Nakaya
  • Patent number: 6255238
    Abstract: The object of the present invention is brown solar glasses, absorbing UV or IR radiation, as well as solar ophthalmic lenses in said glasses. Said glasses have the following composition, expressed in percentages by weight: SiO2: 64-71; B2O3: 2-8; Al2O3: 0-4; ZrO2: 0-2; Li2O: 0-4; Na2O: 6-10; K2O: 7-16; CaO: 0-5.5; ZnO: 0-5.5; TiO2; 0-2; Fe2O3: 3-9; Co3O4: 0-0.030; NiO: 0-0.2; SeO2: 0.0030-0.1; As2O3: 0-0.1; Sb2O3: 0-0.1; SnO2: 0-0.1; Cl: 0-2; Br: 0-2; F: 0-2.
    Type: Grant
    Filed: February 7, 2000
    Date of Patent: July 3, 2001
    Assignee: Corning S.A.
    Inventor: Yves A. H. Brocheton
  • Patent number: 6223563
    Abstract: The invention reflects discovery of a liquid phase doping technique that, unlike previous techniques, exhibits very little fluorine depletion upon subsequent heating. The invention involves the steps of providing a silica sol comprising a tetraalkylammonium hydroxide and a di-, tri-, or tetraalkylammonium fluoride, the sol having pH of about 10 to about 14, adding a gelling agent to the sol to induce gelation, casting or extruding the sol to form a gel body, and then drying, heat treating, and sintering the body. Advantageously, the fluorine-containing compound is tetramethylammonium fluoride.
    Type: Grant
    Filed: March 17, 2000
    Date of Patent: May 1, 2001
    Assignee: Lucent Technologies Inc.
    Inventors: Charles C Bahr, Jr., Suhas Bhandarkar, Michael P Bohrer
  • Patent number: 6177372
    Abstract: A heavy metal fluoride glass composition range (in mol percent) consisting essentially of: (16-30)BaF2.(8-26)HfF4.(6-24)InF3 or GaF3.(4-16)CdF2.(6-24)YbF3.(4-22)ZnF2. In an alternative embodiment, a heavy metal fluoride glass composition range (in mol percent) comprises (16-30)BaF2.(8-26)HfF4.(6-24) of (0-24)InF3, (0-24)GaF3 and (0-19)AlF3.(1-16)CdF2.(6-24)YbF3.(4-26)ZnF2. A preferred heavy metal fluoride glass produced in accordance with the present invention comprises a composition (in mol %) and comprises about 26BaF2.18HfF4.7InF3.5GaF3.10CdF2.18YbF3.16ZnF2. A preferred heavy metal fluoride glass has maximum thickness of most preferably about 3 mm. Another preferred heavy metal fluoride glass comprises a composition (in mol %) and comprises about 26BaF2.18HfF4.12AlF3.10CdF2.18YbF3.16ZnF2.
    Type: Grant
    Filed: September 26, 1997
    Date of Patent: January 23, 2001
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: Steven W. Martin, Jesse Huebsch
  • Patent number: RE37514
    Abstract: A dark gray colored glass comprising 100 parts by weight of a soda lime silicate glass as a matrix component and coloring components consisting essentially of from 0.8 to 1.5 parts by weight of total iron calculated as Fe2O3, from 0.1 to 0.3 part by weight of FeO, from 0 to 1.0 part by weight of TiO2, from 0.0005 to 0.015 part by weight of Se, from 0.02 to 0.05 part be weight of CoO and from 0.002 to 0.05 part by weight of Cr2O3.
    Type: Grant
    Filed: June 13, 2000
    Date of Patent: January 15, 2002
    Assignee: Asahi Glass Company Ltd.
    Inventors: Mizuki Sasage, Takashi Kijima
  • Patent number: RE37998
    Abstract: The invention relates to a colored glass composition for producing glazings for use, e.g., as automobile sunroofs. The colored glass according to the invention is a soda-lime-silica glass comprising, as coloring agents, 1.4 to 4% iron oxide expressed as Fe2O3 and 0 to 0.05 % cobalt oxide, with the cobalt oxide exceeding about 0.02% when the Fe2O3 is below about 2% and, optionally, selenium and chromium oxide, whereby the sum of the CoO+Se+Cr2O3 is preferably less than about 0.24% by weight. The glass of the invention has a total light transmission factor under illuminant A equal to or below approximately 20% and a total energy transmission factor equal to or below approximately 12% for a thickness of 3.85 mm.
    Type: Grant
    Filed: September 27, 1996
    Date of Patent: February 18, 2003
    Assignee: Saint-Gobain Vitrage
    Inventors: Pierre Combes, Jean-Jacques Massol, Pedro Casariego Alvarez