GB532941A - Improvements in electric discharge lamps comprising luminescent materials - Google Patents

Improvements in electric discharge lamps comprising luminescent materials

Info

Publication number
GB532941A
GB532941A GB2096639A GB2096639A GB532941A GB 532941 A GB532941 A GB 532941A GB 2096639 A GB2096639 A GB 2096639A GB 2096639 A GB2096639 A GB 2096639A GB 532941 A GB532941 A GB 532941A
Authority
GB
United Kingdom
Prior art keywords
zinc
cadmium
magnesium
beryllium silicate
proportions
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
GB2096639A
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.)
JOHN HAROLD SHAYLOR
NORMAN LESLIE HARRIS
General Electric Co PLC
Original Assignee
JOHN HAROLD SHAYLOR
NORMAN LESLIE HARRIS
General Electric Co PLC
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 JOHN HAROLD SHAYLOR, NORMAN LESLIE HARRIS, General Electric Co PLC filed Critical JOHN HAROLD SHAYLOR
Priority to GB2096639A priority Critical patent/GB532941A/en
Publication of GB532941A publication Critical patent/GB532941A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/38—Devices for influencing the colour or wavelength of the light
    • H01J61/42—Devices for influencing the colour or wavelength of the light by transforming the wavelength of the light by luminescence

Landscapes

  • Luminescent Compositions (AREA)

Abstract

532,941. Luminescent materials. GENERAL ELECTRIC CO., Ltd., HARRIS, N. L., and SHAYLOR, J. H. July 19, 1939, No. 20966. [Class 39 (i)] Luminescent material used in a low pressure mercury vapour discharge lamp consists of three components (i) cadmium borate (ii) magnesium, zinc, cadmium or similar light giving tungstate and (iii) zinc beryllium silicate activated by 2-3 per cent of manganese or the material described and claimed in Specification 495,706 or this material modified as set forth in Specifications 509,857,522,607 and 530,510; these components are used to give an approximation to daylight or as a substitute for incandescent lighting the proportions being according to a diagram accompanying the Provisional Specification. The Specification describes the process of manufacturespecifying proportions and temperatures-of the following :-(i) zinc beryllium silicate from silica, zinc oxide and beryllium silicate, with manganous chloride for the activator ; (ii) magnesium tungstate from tungstic acid, ammonia solution, and hydrochloric acid to produce tungstic acid to which magnesium oxide is added ; and (iii) cadmium borate from cadmium nitrate, ammonium tetraborate, manganese dioxide and lithium chloride. Specification 535,897 also is referred to. Reference has been directed by the Comptroller to Specification 521,796 (as open to inspection under Sect. 91).
GB2096639A 1939-07-19 1939-07-19 Improvements in electric discharge lamps comprising luminescent materials Expired GB532941A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2096639A GB532941A (en) 1939-07-19 1939-07-19 Improvements in electric discharge lamps comprising luminescent materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2096639A GB532941A (en) 1939-07-19 1939-07-19 Improvements in electric discharge lamps comprising luminescent materials

Publications (1)

Publication Number Publication Date
GB532941A true GB532941A (en) 1941-02-04

Family

ID=10154848

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2096639A Expired GB532941A (en) 1939-07-19 1939-07-19 Improvements in electric discharge lamps comprising luminescent materials

Country Status (1)

Country Link
GB (1) GB532941A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110108552A (en) * 2019-06-17 2019-08-09 南京工业大学 Detection method and detection device for flexible force-induced color-changing material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110108552A (en) * 2019-06-17 2019-08-09 南京工业大学 Detection method and detection device for flexible force-induced color-changing material
CN110108552B (en) * 2019-06-17 2024-03-08 南京工业大学 Detection method and detection device for flexible force-induced color change material

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