GB872638A - A photoflash lamp - Google Patents
A photoflash lampInfo
- Publication number
- GB872638A GB872638A GB29/58A GB2958A GB872638A GB 872638 A GB872638 A GB 872638A GB 29/58 A GB29/58 A GB 29/58A GB 2958 A GB2958 A GB 2958A GB 872638 A GB872638 A GB 872638A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bulb
- electrode
- electrodes
- composition
- lamp
- 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
- 239000000203 mixture Substances 0.000 abstract 5
- 239000011324 bead Substances 0.000 abstract 3
- 239000007769 metal material Substances 0.000 abstract 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 abstract 2
- 239000013078 crystal Substances 0.000 abstract 2
- 229910052751 metal Inorganic materials 0.000 abstract 2
- 239000002184 metal Substances 0.000 abstract 2
- 229910052726 zirconium Inorganic materials 0.000 abstract 2
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 abstract 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 1
- 229910000640 Fe alloy Inorganic materials 0.000 abstract 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract 1
- 239000000020 Nitrocellulose Substances 0.000 abstract 1
- 239000004411 aluminium Substances 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 1
- 239000005030 aluminium foil Substances 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 abstract 1
- 229910002113 barium titanate Inorganic materials 0.000 abstract 1
- 239000011230 binding agent Substances 0.000 abstract 1
- 238000005219 brazing Methods 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 239000010949 copper Substances 0.000 abstract 1
- 239000012777 electrically insulating material Substances 0.000 abstract 1
- 239000011888 foil Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 230000001939 inductive effect Effects 0.000 abstract 1
- 238000009413 insulation Methods 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 229910052749 magnesium Inorganic materials 0.000 abstract 1
- 239000011777 magnesium Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 229910052759 nickel Inorganic materials 0.000 abstract 1
- 229920001220 nitrocellulos Polymers 0.000 abstract 1
- 239000007800 oxidant agent Substances 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- VKJKEPKFPUWCAS-UHFFFAOYSA-M potassium chlorate Chemical group [K+].[O-]Cl(=O)=O VKJKEPKFPUWCAS-UHFFFAOYSA-M 0.000 abstract 1
- 230000037452 priming Effects 0.000 abstract 1
- 230000001360 synchronised effect Effects 0.000 abstract 1
- 238000003466 welding Methods 0.000 abstract 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q3/00—Igniters using electrically-produced sparks
- F23Q3/002—Igniters using electrically-produced sparks using piezoelectric elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K5/00—Light sources using charges of combustible material, e.g. illuminating flash devices
- F21K5/02—Light sources using charges of combustible material, e.g. illuminating flash devices ignited in a non-disrupting container, e.g. photo-flash bulb
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q2/00—Lighters containing fuel, e.g. for cigarettes
- F23Q2/28—Lighters characterised by electrical ignition of the fuel
- F23Q2/285—Lighters characterised by electrical ignition of the fuel with spark ignition
- F23Q2/287—Lighters characterised by electrical ignition of the fuel with spark ignition piezoelectric
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
- Discharge Lamp (AREA)
Abstract
872,638. Photographic flash lamps. GENERAL ELECTRIC CO. Jan. 1, 1958 [Feb. 13, 1957], No. 29/58. Class 9(2). A photographic flash lamp comprising a sealed bulb containing a combustion supporting gas and a charge of combustible metallic material such as shredded foil is provided with ignition means comprising a pair of spaced electrodes, one at least being coated over the length within the bulb with electrically insulating material, at least part of which material is a priming composition. In addition the metallic material is in contact with the primer and with the other electrode to form an electrically conductive path for a spark discharge between the coated electrode and the metallic material upon application of a high voltage to the electrode. In Fig. 1 the bulb 1 is sealed at each reduced end 2 by metal contacts 3 to which electrodes 4 are attached by welding or brazing. The contacts may be a chrome iron alloy and the electrodes may be iron, copper, aluminium or nickel. One electrode has a porous coating 5 of an ignition composition such as zirconium or a mixture of zirconium with magnesium and an oxidiser such as potassium chlorate bonded by a binder such as nitrocellulose. The bulb has a filling of aluminium foil in an oxygen atmosphere. The lamp may be flashed, as in Specification 872,637, by inducing a voltage in a piezo-electric crystal 16, e.g. a barium-titanate crystal. The bulb may be of conventional shape, Fig. 3, in which case the electrodes 8 are spaced by a glass bead 9 and both are coated with the ignition composition 10 above the bead, while below the bead each is covered with electric insulation 12. The dielectric 12 may be a borate composition or an oxide of the electrode metal. Operation of the lamp may be synchronized with the movement of a camera shutter.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US872638XA | 1957-02-13 | 1957-02-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB872638A true GB872638A (en) | 1961-07-12 |
Family
ID=22204107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB29/58A Expired GB872638A (en) | 1957-02-13 | 1958-01-01 | A photoflash lamp |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB872638A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4309166A (en) | 1977-12-23 | 1982-01-05 | U.S. Philips Corporation | Combustion flashbulb |
-
1958
- 1958-01-01 GB GB29/58A patent/GB872638A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4309166A (en) | 1977-12-23 | 1982-01-05 | U.S. Philips Corporation | Combustion flashbulb |
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