GB549136A - Improvements in or relating to flash-light lamps - Google Patents

Improvements in or relating to flash-light lamps

Info

Publication number
GB549136A
GB549136A GB1078141A GB1078141A GB549136A GB 549136 A GB549136 A GB 549136A GB 1078141 A GB1078141 A GB 1078141A GB 1078141 A GB1078141 A GB 1078141A GB 549136 A GB549136 A GB 549136A
Authority
GB
United Kingdom
Prior art keywords
flash
lamps
time
nitrous oxide
philips
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
GB1078141A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Priority to GB1078141A priority Critical patent/GB549136A/en
Publication of GB549136A publication Critical patent/GB549136A/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)

Abstract

549,136. Flash lamps for photography. PHILIPS LAMPS, Ltd. (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). Aug. 23, 1941. No. 10781. [Class 9 (ii)] In flash light lamps which contain a solid combustible material such as aluminium or aliminium and magnesium foil or wire, which reacts actinically with oxygen inside a bulb, the gas filling comprises a mixture of oxygen and nitrous oxide gas containing from 10 to 60 per cent. by volume of nitrous oxide gas. This is stated to lengthen the flash time and to increase the time lag, i.e. the time which elapses between the establishment of the ignition current and the commencement of light development, but this latter may be reduced by increasing the gas pressure from say 23 c.m's to 35 c.m's.
GB1078141A 1941-08-23 1941-08-23 Improvements in or relating to flash-light lamps Expired GB549136A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1078141A GB549136A (en) 1941-08-23 1941-08-23 Improvements in or relating to flash-light lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1078141A GB549136A (en) 1941-08-23 1941-08-23 Improvements in or relating to flash-light lamps

Publications (1)

Publication Number Publication Date
GB549136A true GB549136A (en) 1942-11-06

Family

ID=9974141

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1078141A Expired GB549136A (en) 1941-08-23 1941-08-23 Improvements in or relating to flash-light lamps

Country Status (1)

Country Link
GB (1) GB549136A (en)

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