BE509547A - - Google Patents

Info

Publication number
BE509547A
BE509547A BE509547DA BE509547A BE 509547 A BE509547 A BE 509547A BE 509547D A BE509547D A BE 509547DA BE 509547 A BE509547 A BE 509547A
Authority
BE
Belgium
Application number
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.)
Publication of BE509547A publication Critical patent/BE509547A/xx

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/06—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for filtering out ultraviolet radiation
    • 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
    • H01J61/40—Devices for influencing the colour or wavelength of the light by light filters; by coloured coatings in or on the envelope

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
BE509547D 1951-02-27 BE509547A (en))

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1033182T 1951-02-27

Publications (1)

Publication Number Publication Date
BE509547A true BE509547A (en))

Family

ID=9584285

Family Applications (1)

Application Number Title Priority Date Filing Date
BE509547D BE509547A (en)) 1951-02-27

Country Status (2)

Country Link
BE (1) BE509547A (en))
FR (1) FR1033182A (en))

Also Published As

Publication number Publication date
FR1033182A (fr) 1953-07-08

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