GB969633A - Photoflash lamp - Google Patents

Photoflash lamp

Info

Publication number
GB969633A
GB969633A GB12027/61A GB1202761A GB969633A GB 969633 A GB969633 A GB 969633A GB 12027/61 A GB12027/61 A GB 12027/61A GB 1202761 A GB1202761 A GB 1202761A GB 969633 A GB969633 A GB 969633A
Authority
GB
United Kingdom
Prior art keywords
april
photo
nitrogen
oxygen
light output
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
Application number
GB12027/61A
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.)
GTE Sylvania Inc
Original Assignee
Sylvania Electric Products Inc
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 Sylvania Electric Products Inc filed Critical Sylvania Electric Products Inc
Publication of GB969633A publication Critical patent/GB969633A/en
Expired legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Discharge Lamp (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

969,633. Photo-flash lamps. SYLVANIA ELECTRIC PRODUCTS Inc. April 4, 1961 [April 27, 1960], No. 12027/61. Heading G2L. A photo-flash lamp has within its sealed envelope a quantity of filamentary zirconium and a gas filling above atmospheric pressure comprising a mixture of oxygen with between 1% and about 10% by volume of nitrogen. The light output against time diagram of Fig. 2 was obtained using about 30 mg of shredded zirconium foil having a crosssectional area between 0. 5 x 10<SP>-6</SP> sq. in. and 2. 0 x 10<SP>-6</SP>.sq. in. with a gas filling of about 95% oxygen and 5% nitrogen at a pressure of about six atmospheres, the foil and gas being present in substantially stoichiometric proportions. Variations in amount and composition of the usual electrically fired primer are stated to have little effect on the time taken to reach maximum light output.
GB12027/61A 1960-04-27 1961-04-04 Photoflash lamp Expired GB969633A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US25055A US3045460A (en) 1960-04-27 1960-04-27 Photoflash lamp

Publications (1)

Publication Number Publication Date
GB969633A true GB969633A (en) 1964-09-16

Family

ID=21823815

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12027/61A Expired GB969633A (en) 1960-04-27 1961-04-04 Photoflash lamp

Country Status (2)

Country Link
US (1) US3045460A (en)
GB (1) GB969633A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3195325A (en) * 1961-04-01 1965-07-20 Tokyo Shibaura Electric Co Flash lamps
US3208246A (en) * 1962-01-23 1965-09-28 Tokyo Shibaura Electric Co Flash lamps
US3598511A (en) * 1968-10-09 1971-08-10 Tokyo Shibaura Electric Co Flashlamps
AT306508B (en) * 1969-03-17 1973-04-10 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Flash lamp
NL7806572A (en) * 1977-12-23 1979-06-26 Philips Nv COMBUSTION FLASHLIGHT.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2272059A (en) * 1939-08-19 1942-02-03 Westinghouse Electric & Mfg Co Photoflash lamp
US2315099A (en) * 1940-04-11 1943-03-30 Johannes Antonius Maria Liempt Flashlight lamp
US2865186A (en) * 1955-06-20 1958-12-23 Sylvania Electric Prod High-intensity photoflash lamp
US2955447A (en) * 1957-07-16 1960-10-11 Sylvania Electric Prod Photoflash lamp
US2982119A (en) * 1959-04-27 1961-05-02 Gen Electric Flash lamp

Also Published As

Publication number Publication date
US3045460A (en) 1962-07-24

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