GB290583A - Improved method of and apparatus for artificially illuminating objects - Google Patents

Improved method of and apparatus for artificially illuminating objects

Info

Publication number
GB290583A
GB290583A GB14176/28A GB1417628A GB290583A GB 290583 A GB290583 A GB 290583A GB 14176/28 A GB14176/28 A GB 14176/28A GB 1417628 A GB1417628 A GB 1417628A GB 290583 A GB290583 A GB 290583A
Authority
GB
United Kingdom
Prior art keywords
yellow
produced
sodium
lamps
potassium
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
GB14176/28A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB290583A publication Critical patent/GB290583A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/02—Illuminating scene
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/04—Signs, boards or panels, illuminated from behind the insignia
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Cultivation Of Plants (AREA)

Abstract

290,583. Bertling, H. May 14, 1927, [Convention date]. Low-pressure metallic-vapour apparatus; vacuum tubes.-In a system of lighting in which a number of different coloured sources of light are employed, violet or blue rays are produced by a mercury vapour arc lamp I, green rays are produced by mercury vapour arc lamps II made of yellow or green glass or provided with exchangeable yellow or green glass filters a, and yellow and red rays are produced by sodium-potassium vapour lamps III. The sodium-potassium alloy may contain about 23 per cent sodium and 77 per cent potassium, and the tubes may be filled with a gas such as neon. Specification 174,747, [Class 75 (iv), Lamps &c. Kinds &c. of ], is referred to.
GB14176/28A 1927-05-14 1928-05-14 Improved method of and apparatus for artificially illuminating objects Expired GB290583A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE290583X 1927-05-14

Publications (1)

Publication Number Publication Date
GB290583A true GB290583A (en) 1929-08-14

Family

ID=6063019

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14176/28A Expired GB290583A (en) 1927-05-14 1928-05-14 Improved method of and apparatus for artificially illuminating objects

Country Status (1)

Country Link
GB (1) GB290583A (en)

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