GB738630A - Improvements in light-filtering quartz glass - Google Patents
Improvements in light-filtering quartz glassInfo
- Publication number
- GB738630A GB738630A GB33178/53A GB3317853A GB738630A GB 738630 A GB738630 A GB 738630A GB 33178/53 A GB33178/53 A GB 33178/53A GB 3317853 A GB3317853 A GB 3317853A GB 738630 A GB738630 A GB 738630A
- Authority
- GB
- United Kingdom
- Prior art keywords
- substances
- quartz glass
- quartz
- nov
- per cent
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/38—Devices for influencing the colour or wavelength of the light
- H01J61/40—Devices for influencing the colour or wavelength of the light by light filters; by coloured coatings in or on the envelope
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B11/00—Pressing molten glass or performed glass reheated to equivalent low viscosity without blowing
- C03B11/14—Pressing laminated glass articles or glass with metal inserts or enclosures, e.g. wires, bubbles, coloured parts
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/20—Uniting glass pieces by fusing without substantial reshaping
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B9/00—Blowing glass; Production of hollow glass articles
- C03B9/02—Blowing glass; Production of hollow glass articles with the mouth; Auxiliary means therefor
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B9/00—Blowing glass; Production of hollow glass articles
- C03B9/30—Details of blowing glass; Use of materials for the moulds
- C03B9/31—Blowing laminated glass articles or glass with enclosures, e.g. wires, bubbles
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Glass Compositions (AREA)
Abstract
738,630. Colour filters. HERAEUS QUARZSCHMELZE GES. Nov. 30, 1953 [Nov. 29, 1952], No. 33178/53. Drawings to Specification. Class 97 (1). [Also in Groups XXIII and XL (a)] A gas-discharge lamp envelope comprises two layers fused together-the outer layer being a quartz glass containing substances which selectively absorb portions of the ultra-violet range, and the inner layer is quartz glass without these substances. The inner layer protects the filter layer against premature discoloration and devitrification under the action of the vapour ions. The substances for adding to the quartz which is to form the outer layer are selected according to what particular wavelengths are to be absorbed, and the total amount of the additions is less than 0.25 per cent. The substances include oxides (and some carbides or nitrides) of Al, Ti, Zr, Ce, Th, Fe, Co, Zn, Cd, Sn, Bi, Ag and alkaline earths, or some of these metals, instead of their oxides, and copper. The amounts range from 0.003 to 0.2 per cent of the quartz. The invention is also applicable to light-filter plates, e.g. for optical purposes or for observation glasses for high-temperature furnaces.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE738630X | 1952-11-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB738630A true GB738630A (en) | 1955-10-19 |
Family
ID=6642837
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB33178/53A Expired GB738630A (en) | 1952-11-29 | 1953-11-30 | Improvements in light-filtering quartz glass |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB738630A (en) |
NL (1) | NL92023C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0062381A1 (en) * | 1981-04-08 | 1982-10-13 | Koninklijke Philips Electronics N.V. | High-pressure discharge lamp |
US6093666A (en) * | 1997-05-30 | 2000-07-25 | Kabushiki Kaisha Toshiba | Quartz glass, heat treating apparatus using quartz glass, and heat treating method |
-
0
- NL NL92023D patent/NL92023C/xx active
-
1953
- 1953-11-30 GB GB33178/53A patent/GB738630A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0062381A1 (en) * | 1981-04-08 | 1982-10-13 | Koninklijke Philips Electronics N.V. | High-pressure discharge lamp |
US6093666A (en) * | 1997-05-30 | 2000-07-25 | Kabushiki Kaisha Toshiba | Quartz glass, heat treating apparatus using quartz glass, and heat treating method |
US6263704B1 (en) | 1997-05-30 | 2001-07-24 | Kabushiki Kaisha Toshiba | Quartz glass, heat treating apparatus using quartz glass, and heat treating method |
US6399526B2 (en) | 1997-05-30 | 2002-06-04 | Kabushiki Kaisha Toshiba | Heat treating apparatus using quartz glass |
DE19824192B4 (en) * | 1997-05-30 | 2007-01-25 | Kabushiki Kaisha Toshiba, Kawasaki | Quartz glass, process for its preparation and use |
Also Published As
Publication number | Publication date |
---|---|
NL92023C (en) |
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