GB1164623A - Improvements in Self-Luminous Light Sources - Google Patents

Improvements in Self-Luminous Light Sources

Info

Publication number
GB1164623A
GB1164623A GB3749366A GB3749366A GB1164623A GB 1164623 A GB1164623 A GB 1164623A GB 3749366 A GB3749366 A GB 3749366A GB 3749366 A GB3749366 A GB 3749366A GB 1164623 A GB1164623 A GB 1164623A
Authority
GB
United Kingdom
Prior art keywords
envelope
coated
light
self
light source
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
GB3749366A
Inventor
Albert Hand
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.)
Brandhurst Co Ltd
Original Assignee
Brandhurst Co 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 Brandhurst Co Ltd filed Critical Brandhurst Co Ltd
Priority to GB3749366A priority Critical patent/GB1164623A/en
Publication of GB1164623A publication Critical patent/GB1164623A/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
    • C09K11/04—Luminescent, e.g. electroluminescent, chemiluminescent materials containing natural or artificial radioactive elements or unspecified radioactive elements
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/42—Illuminated signs; Luminous advertising with light sources activated by non-visible radiation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J65/00—Lamps without any electrode inside the vessel; Lamps with at least one main electrode outside the vessel
    • H01J65/08—Lamps in which a screen or coating is excited to luminesce by radioactive material located inside the vessel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2111/00—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00
    • F21W2111/02—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00 for roads, paths or the like

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

1,164,623. Uses of luminescence. BRANDHURST CO. Ltd. 22 Aug., 1966, No. 37493/66. Heading C4S. A method of making a self-luminous light source of the kind including a hollow gas-tight envelope coated internally with a phosphor layer 2 of thickness corresponding to 1 to 100 milligrams per sq. cm. and containing a radioactive gas (e.g. tritium) at a pressure from 5 to 300 cms. Hg, consists in depositing a reflecting material 3 (e.g. vaporized Al) directly on to the external surface of the envelope leaving a portion uncovered to constitute a light-emitting window 1. The source may be utilized for back illumination of a translucent dial or transparent instrument dial. The light may be collimated to a parallel beam, piped within the instrument assembly to the point to be illuminated or placed behind a screen printed or stencilled label. In embodiments, the glass envelope is rectangular, conical, cylindrical (50% coated exterior surface) or spherical (up to 80% coated area). In Figs. 7 and 8 (not shown), the light source may be mounted in an acrylic moulding (4) and a shock-resisting resin casting (6).
GB3749366A 1966-08-22 1966-08-22 Improvements in Self-Luminous Light Sources Expired GB1164623A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3749366A GB1164623A (en) 1966-08-22 1966-08-22 Improvements in Self-Luminous Light Sources

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3749366A GB1164623A (en) 1966-08-22 1966-08-22 Improvements in Self-Luminous Light Sources

Publications (1)

Publication Number Publication Date
GB1164623A true GB1164623A (en) 1969-09-17

Family

ID=10396886

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3749366A Expired GB1164623A (en) 1966-08-22 1966-08-22 Improvements in Self-Luminous Light Sources

Country Status (1)

Country Link
GB (1) GB1164623A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024079321A1 (en) * 2022-10-13 2024-04-18 Mb-Microtec Ag Gaseous tritium light source, timepiece or insert with this gaseous tritium light source

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024079321A1 (en) * 2022-10-13 2024-04-18 Mb-Microtec Ag Gaseous tritium light source, timepiece or insert with this gaseous tritium light source

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Legal Events

Date Code Title Description
414F Notice of opposition given (sect. 14/1949)
414E Application relinquished (sect. 14/1949)
CSNS Application of which complete specification have been accepted and published, but patent is not sealed