GB568826A - Improvements in or relating to systems of illumination - Google Patents

Improvements in or relating to systems of illumination

Info

Publication number
GB568826A
GB568826A GB1607543A GB1607543A GB568826A GB 568826 A GB568826 A GB 568826A GB 1607543 A GB1607543 A GB 1607543A GB 1607543 A GB1607543 A GB 1607543A GB 568826 A GB568826 A GB 568826A
Authority
GB
United Kingdom
Prior art keywords
light
colour
filter means
fluorescent material
illumination
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
GB1607543A
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.)
CECIL WALKER
Original Assignee
CECIL WALKER
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 CECIL WALKER filed Critical CECIL WALKER
Priority to GB1607543A priority Critical patent/GB568826A/en
Publication of GB568826A publication Critical patent/GB568826A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/28—Structurally-combined illuminating devices

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electroluminescent Light Sources (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)

Abstract

568,826. Luminescent materials. WALKER, C. Sept. 30, 1943, No. 16075. [Class 39 (i)] A system of illumination comprises a source of light arranged to cast light of a first colour on to an object, the latter bearing fluorescent material which fluoresces under this light to emit light of a second colour, and the object is viewed through filter means transparent to the light of the second colour, but substantially opaque to light of the first colour. The system is applied to an instrument dial, the needle and graduations being covered with the fluorescent material and the cover glass forming the filter means. Fluorescent substances mentioned are fluorescein and isoquinoline red.
GB1607543A 1943-09-30 1943-09-30 Improvements in or relating to systems of illumination Expired GB568826A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1607543A GB568826A (en) 1943-09-30 1943-09-30 Improvements in or relating to systems of illumination

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1607543A GB568826A (en) 1943-09-30 1943-09-30 Improvements in or relating to systems of illumination

Publications (1)

Publication Number Publication Date
GB568826A true GB568826A (en) 1945-04-23

Family

ID=10070693

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1607543A Expired GB568826A (en) 1943-09-30 1943-09-30 Improvements in or relating to systems of illumination

Country Status (1)

Country Link
GB (1) GB568826A (en)

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