HIGH PRESSURE MERCURY LAMPS WITH A LOW COLOUR TEMPERATURE AND A HIGHER LUMINOUS EFFICACY

QUECKSILBER-HOCHDRUCKLEUCHTSTOFLAMPEN NIEDRIGER FARBTEMPERATUR UND ERHOEHTER LICHTAUSBEUTE

Since the introduction of the mercury high pressure lamp efforts have always been made to get a higher luminous efficacy and a better colour by appropriate fluorescent materials. For the lighting of interiors as well as street lighting there was a need for high pressure lamps with lower colour temperature. This can be obtained with a thicker fluorescent layer, which gives however a loss of luminous flux of 10%. By the use of cristalised yttrium-vanadium as fluorescent material a gain in luminous flux of 16% can be obtained. This new hpl-de luxe lamp with a more agreeable colour is better fitted for public lighting especially in residential areas. (TRRL)

  • Supplemental Notes:
    • Lichttechnische Gemeinschaftstagung, Amsterdam 13-16b June 1978.
  • Corporate Authors:

    Nederlandse Stichting voor Verlichtingskunde

    310 Utrechtseweg
    Arnhem,   Netherlands 
  • Authors:
    • Vanters, PIJCHM
    • Terters, PIJ
  • Publication Date: 1978

Language

  • German

Media Info

  • Features: Figures; Tables;
  • Pagination: p. 79-84
  • Serial:
    • Volume: 1

Subject/Index Terms

Filing Info

  • Accession Number: 00309794
  • Record Type: Publication
  • Source Agency: Institute for Road Safety Research, SWOV
  • Files: ITRD, TRIS
  • Created Date: Aug 5 1980 12:00AM