GB568826A - Improvements in or relating to systems of illumination - Google Patents
Improvements in or relating to systems of illuminationInfo
- 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
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.
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) |
-
1943
- 1943-09-30 GB GB1607543A patent/GB568826A/en not_active Expired
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