JPS6487529A - Glass for halogen lamp reflector - Google Patents

Glass for halogen lamp reflector

Info

Publication number
JPS6487529A
JPS6487529A JP24557587A JP24557587A JPS6487529A JP S6487529 A JPS6487529 A JP S6487529A JP 24557587 A JP24557587 A JP 24557587A JP 24557587 A JP24557587 A JP 24557587A JP S6487529 A JPS6487529 A JP S6487529A
Authority
JP
Japan
Prior art keywords
glass
temp
halogen lamp
lamp reflector
li2o
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP24557587A
Other languages
Japanese (ja)
Other versions
JPH0433741B2 (en
Inventor
Shinichi Tai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AGC Techno Glass Co Ltd
Original Assignee
Toshiba Glass Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Glass Co Ltd filed Critical Toshiba Glass Co Ltd
Priority to JP24557587A priority Critical patent/JPS6487529A/en
Publication of JPS6487529A publication Critical patent/JPS6487529A/en
Publication of JPH0433741B2 publication Critical patent/JPH0433741B2/ja
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/11—Glass compositions containing silica with 40% to 90% silica, by weight containing halogen or nitrogen
    • C03C3/112—Glass compositions containing silica with 40% to 90% silica, by weight containing halogen or nitrogen containing fluorine
    • C03C3/115—Glass compositions containing silica with 40% to 90% silica, by weight containing halogen or nitrogen containing fluorine containing boron
    • C03C3/118—Glass compositions containing silica with 40% to 90% silica, by weight containing halogen or nitrogen containing fluorine containing boron containing aluminium

Abstract

PURPOSE:To improve heat resistance and press-moldability by incorporating SiO2, Al2O3, B2O3, Na2O, K2O and Li2O, etc., at prescribed rate and regulating linear expansion coefficient, annealing point and softening point, etc., to a specified range. CONSTITUTION:Glass for a halogen lamp reflector is formed by composition consisting of by wt.% 68-82% SiO2, 0.5-5% Al2O3, 10-18% B2O3, 3.5-8% (Na2O+K2O+Li2O), 0-3% (CaO+MgO) and 0.05-1% (NaCl+CaF+As2O3+Sb2 O3). This glass has (35-50)X10<-7>/ deg.C linear expansion coefficient, 530-570 deg.C annealing point, 750-820 deg.C softening point, 1,100-1,200 deg.C operation temp. and prescribed thermal shock resistance. This thermal shock resistance is defined as such a state that a plate glass having 150mm square and 3mm thickness is held in a furnace in 15min and thereafter even when it is quenched in water of 140-170 deg.C temp. difference with furnace temp., a crack is not generated.
JP24557587A 1987-09-29 1987-09-29 Glass for halogen lamp reflector Granted JPS6487529A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24557587A JPS6487529A (en) 1987-09-29 1987-09-29 Glass for halogen lamp reflector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24557587A JPS6487529A (en) 1987-09-29 1987-09-29 Glass for halogen lamp reflector

Publications (2)

Publication Number Publication Date
JPS6487529A true JPS6487529A (en) 1989-03-31
JPH0433741B2 JPH0433741B2 (en) 1992-06-03

Family

ID=17135761

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24557587A Granted JPS6487529A (en) 1987-09-29 1987-09-29 Glass for halogen lamp reflector

Country Status (1)

Country Link
JP (1) JPS6487529A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2712281A1 (en) * 1993-11-08 1995-05-19 Jenaer Glaswerk Gmbh Borosilicate glass with high transmission in the ultraviolet range, with low thermal expansion and with high chemical resistance, process for the preparation and use of such a glass.
GB2348197A (en) * 1999-03-23 2000-09-27 Zeiss Stiftung Use of thermal shock-resistant glass for beverage containers
JP2002201040A (en) * 2000-10-31 2002-07-16 Asahi Glass Co Ltd Aluminoborosilicate glass
JP2007039315A (en) * 2005-06-29 2007-02-15 Nippon Electric Glass Co Ltd Optical glass
US11040907B2 (en) 2017-03-31 2021-06-22 Corning Incorporated High transmission glasses

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2712281A1 (en) * 1993-11-08 1995-05-19 Jenaer Glaswerk Gmbh Borosilicate glass with high transmission in the ultraviolet range, with low thermal expansion and with high chemical resistance, process for the preparation and use of such a glass.
GB2348197A (en) * 1999-03-23 2000-09-27 Zeiss Stiftung Use of thermal shock-resistant glass for beverage containers
GB2348197B (en) * 1999-03-23 2002-11-06 Zeiss Stiftung Use of a glass for thermal shock-resistant beverage containers
US6667260B2 (en) 1999-03-23 2003-12-23 Schott Glas Glass for thermal shock-resistant beverage containers
JP2002201040A (en) * 2000-10-31 2002-07-16 Asahi Glass Co Ltd Aluminoborosilicate glass
JP2007039315A (en) * 2005-06-29 2007-02-15 Nippon Electric Glass Co Ltd Optical glass
US11040907B2 (en) 2017-03-31 2021-06-22 Corning Incorporated High transmission glasses
US11746038B2 (en) 2017-03-31 2023-09-05 Corning Incorporated High transmission glasses

Also Published As

Publication number Publication date
JPH0433741B2 (en) 1992-06-03

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