GB727392A - Improvements in or relating to fluorescent lamps - Google Patents

Improvements in or relating to fluorescent lamps

Info

Publication number
GB727392A
GB727392A GB1930450A GB1930450A GB727392A GB 727392 A GB727392 A GB 727392A GB 1930450 A GB1930450 A GB 1930450A GB 1930450 A GB1930450 A GB 1930450A GB 727392 A GB727392 A GB 727392A
Authority
GB
United Kingdom
Prior art keywords
weight
powder
parts
mixture
magnesium germanate
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
GB1930450A
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.)
MARY TERESA DOHERTY
Siemens Electric Lamps and Supplies Ltd
Original Assignee
MARY TERESA DOHERTY
Siemens Electric Lamps and Supplies 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 MARY TERESA DOHERTY, Siemens Electric Lamps and Supplies Ltd filed Critical MARY TERESA DOHERTY
Priority to GB1930450A priority Critical patent/GB727392A/en
Publication of GB727392A publication Critical patent/GB727392A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/70—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing phosphorus
    • C09K11/72—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing phosphorus also containing halogen, e.g. halophosphates
    • C09K11/73—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing phosphorus also containing halogen, e.g. halophosphates also containing alkaline earth metals
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/66—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing germanium, tin or lead

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Luminescent Compositions (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

727,392. Luminescent materials. SIEMENS ELECTRIC LAMPS & SUPPLIES, Ltd., DOHERTY, M. T., and SERGEANT, G. July 27, 1951 [Aug. 2, 1950], No. 19304/50. Class 39 (1). A fluorescent discharge lamp containing mercury at low pressure has a fluorescent coating mixture consisting of or including one or more halophosphate powders and a red-fluorescing magnesium germanate powder. Preferably one or more calcium halophosphate powders prepared as described in Specification 592,675 are used, the magnesium germanate powder forming at least 10 per cent by weight of the mixture. In one example the fluorescent coating consists of a mixture of 100 parts by weight of a calcium halophosphate powder constituted to give a " natural " colour, 20 parts by weight of a calcium halophosphate powder constituted to give a blue colour, and 20 parts by weight of red-fluorescing magnesium germanate powder, the mixture producing light of " daylight " quality. In a second example the mixture consists of 100 parts by weight of a calcium halophosphate powder constituted to give a warm-white " colour, and 30 parts by weight of red-fluorescirig magnesium germanate powder. In a third example 100 parts by weight of a " warm white " calcium halophosphate powder are mixed with 50 parts by weight of redfluorescing magnesium germanate powder. The magnesium germanate can be manganese activated and part of the germanium can be substituted by titanium or zirconium as described in Specification 721,993.
GB1930450A 1950-08-02 1950-08-02 Improvements in or relating to fluorescent lamps Expired GB727392A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1930450A GB727392A (en) 1950-08-02 1950-08-02 Improvements in or relating to fluorescent lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1930450A GB727392A (en) 1950-08-02 1950-08-02 Improvements in or relating to fluorescent lamps

Publications (1)

Publication Number Publication Date
GB727392A true GB727392A (en) 1955-03-30

Family

ID=10127166

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1930450A Expired GB727392A (en) 1950-08-02 1950-08-02 Improvements in or relating to fluorescent lamps

Country Status (1)

Country Link
GB (1) GB727392A (en)

Similar Documents

Publication Publication Date Title
GB727392A (en) Improvements in or relating to fluorescent lamps
GB673637A (en) Improvements relating to fluorescent materials
GB653576A (en) Luminescent material
GB869147A (en) Improvements in and relating to fluorescent electric discharge lamps
GB514458A (en) Improvements in or relating to luminescent materials
GB469731A (en) Improvements in or relating to combinations of electric discharge devices with materials excited to luminescence by the electric discharge
GB581951A (en) Improvement in fluorescent lamps
GB712301A (en) Improvements in or relating to luminescent materials
GB498370A (en) Fluorescent material
GB466503A (en) Improvements in or relating to electric lamps comprising luminescent materials
GB609937A (en) Improvements relating to luminescent materials
GB469776A (en) Improvements in or relating to combinations of electric discharge devices and materials excited to luminescence by the electric discharge
GB721993A (en) Improvements relating to fluorescent materials
JPS56109280A (en) Calcium halophosphate fluorescent substance
JPS5490878A (en) Fluorescent lamp
GB519157A (en) Improvements in electric discharge lamps
GB1231633A (en)
GB637539A (en) The coating of electric discharge lamps with luminescent material
GB514457A (en) Improvements in or relating to luminescent materials
GB888337A (en) Improvements in fluorescent lamps and phosphor compositions therefor
GB469732A (en) Improvements in or relating to combinations of electric discharge devices and materials excited to luminescence by the electric discharge
GB746065A (en) Luminescent material, particularly for electric discharge lamps and method for its manufacture
GB666163A (en) Improvements in or relating to phosphors
GB644599A (en) Fluorescent material
GB678692A (en) Improvements in and relating to fluorescent coatings for electric lamps