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DE699096C - Electric discharge lamp or fluorescent tube filled with noble gases and mercury and a luminophore layer excited by the mercury radiation - Google Patents

Electric discharge lamp or fluorescent tube filled with noble gases and mercury and a luminophore layer excited by the mercury radiation

Info

Publication number
DE699096C
DE699096C DE1938P0077065 DEP0077065D DE699096C DE 699096 C DE699096 C DE 699096C DE 1938P0077065 DE1938P0077065 DE 1938P0077065 DE P0077065 D DEP0077065 D DE P0077065D DE 699096 C DE699096 C DE 699096C
Authority
DE
Germany
Prior art keywords
mercury
discharge lamp
electric discharge
fluorescent tube
noble gases
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
DE1938P0077065
Other languages
German (de)
Inventor
Alfred Hamilton Mckeag
John Turton Randall
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.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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 Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Application granted granted Critical
Publication of DE699096C publication Critical patent/DE699096C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/70Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing phosphorus

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)

Description

Elektrische Entladungslampe oder Leuchtröhre mit einer Füllung aus Edelgasen und Quecksilber und einer durch die Quecksilberstrahlung angeregten Luminophorschicht Zusatz zum Patent 656213 Gegenstand des Patents 656213 ist eine elektrische Entladungslampe oder Leuchtröhre mit einer Füllung aus Edelgasen und Quecksilber und einer durch die Quecksilberstrahlung angeregten Luminophorschicht aus Kadmiumphosphat. Eine solche Entladungslampe oder Leuchtröhre gibt wegen der rötlichen Lumineszenzfarbe ein weißliches Mischlicht mit warmem Farbton, und zwar insbesondere dann, wenn das Kadmiumphosphat durch einen geringen Zusatz von Mangan aktiviert ist.Electric discharge lamp or fluorescent tube with a filling Noble gases and mercury and a luminophore layer excited by the mercury radiation Addendum to Patent 656213 The subject of patent 656213 is an electric discharge lamp or fluorescent tube with a filling of noble gases and mercury and one through the luminophore layer of cadmium phosphate excited by the mercury radiation. One such discharge lamps or fluorescent tubes exist because of their reddish luminescent color a whitish mixed light with a warm hue, especially if that Cadmium phosphate is activated by adding a small amount of manganese.

Es wurde festgestellt, daß eine nicht unerheblich bessere Lichtausbeute bei praktisch gleicher rötlicher Lumineszenzfarbe und damit gleichem Farbton des Mischlichtes aus Quecksilberstrahlung und Lumineszenzstrahlung erzielt wird, wenn erfindungsgemäß dem zur Herstellung der Luminophorschicht verwendeben Kadmiumphosphat noch Kadmiumchlorid zugesetzt wird. Die Menge desselben beträgt zweckmäßig Io bis 30%. Als besonders vorteilhaft hat sich ein Kadmiumchlöridzusatz von etwa 2o% erwiesen. Vor der Zumilschung des Kadmiumchlorids wird das Kadm,n-aumphoisphat zweckmäßig durch Zusatz von Mangan .aktiviert. Letzterer kann, wie -im Hauptpatent angegeben, 0,05 bis o,5% betragen. Das durch Mischen und nachfolgendes Glühen von Kadmiumphosphat und Kadmiumchlorid entstellende Kadmiumchlorphosphat (3 Cd#P#0# ₧ CdC1#) ist leicht in genügend feinkörniger Beschaffenheit herstellbar und läßt sich in gleicher Weise, wie im Patent 656213 für kadmiumphosphat angegeben, besonders gut unter Benutzung einer Phosphörsäureschicht auf der Gefäßwandung von Entladungslampen oder Leuchtröhren bzw. von denselben zugeordneten Schirmen anbringen.It was found that a not inconsiderably better light output with practically the same reddish luminescent color and thus the same hue of the Mixed light from mercury radiation and luminescence radiation is achieved when according to the invention, the cadmium phosphate used to produce the luminophore layer cadmium chloride is still added. The amount thereof is suitably Io bis 30%. An addition of cadmium chloride of about 20% has proven to be particularly advantageous. Before the addition of the cadmium chloride, the cadm, n-aumphoisphate is expedient activated by adding manganese. The latter can, like -im Main patent stated, 0.05 to 0.5%. The by mixing and subsequent annealing of Cadmium phosphate and cadmium chloride disfiguring cadmium chlorophosphate (3 Cd # P # 0 # ₧ CdC1 #) can easily be produced in a sufficiently fine-grained texture and can be in the same way, as indicated in the patent 656213 for cadmium phosphate, particularly well using a phosphoric acid layer on the vessel wall of Attach discharge lamps or fluorescent tubes or shields assigned to them.

Claims (1)

PATENTANSPRUCH: Elektrische Entladungslampe oder Leuchtröhre mit einer Füllung aus Edelgasen und Quecksilber und einer durch die Quecksilberstrahlung angeregten Luminophorschicht nach Patent 656 2I3, dadurch gekennzeichnet, daß dem zur Herstellung der Luminophorschicht verwendeten Kadmiumphosphat noch Kadmiumchlorid zugesetzt ist, und zwar zweckmäßig in einer Menge von etwa io bis 3ö0/0.PATENT CLAIM: Electric discharge lamp or fluorescent tube with a Filling of noble gases and mercury and one excited by mercury radiation Luminophore layer according to Patent 656 213, characterized in that the cadmium phosphate used in the luminophore layer or cadmium chloride was added is, and expediently in an amount of about 10 to 30/0.
DE1938P0077065 1937-04-16 1938-03-31 Electric discharge lamp or fluorescent tube filled with noble gases and mercury and a luminophore layer excited by the mercury radiation Expired DE699096C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB699096X 1937-04-16

Publications (1)

Publication Number Publication Date
DE699096C true DE699096C (en) 1940-11-22

Family

ID=10493610

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1938P0077065 Expired DE699096C (en) 1937-04-16 1938-03-31 Electric discharge lamp or fluorescent tube filled with noble gases and mercury and a luminophore layer excited by the mercury radiation

Country Status (1)

Country Link
DE (1) DE699096C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE903011C (en) * 1949-09-22 1954-02-01 Patra Patent Treuhand Process for the production of a coating of fine-grained powder materials on the glass vessels of electric lamps

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE903011C (en) * 1949-09-22 1954-02-01 Patra Patent Treuhand Process for the production of a coating of fine-grained powder materials on the glass vessels of electric lamps

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