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ON THE EMITTED SPECTRUM CHANGING IN METAL-HALIDE LAMPS

M. Cristea1,* , B. Lafitte2

Affiliation

  1. « Politehnica » University of Bucharest, Physics Department, Splaiul Independentei 313, 77206 Bucharest, Romania
  2. Paul Sabatier University of Toulouse, Plasma Physics Centre and their Applications of Toulouse, Route de Narbonne 118, Toulouse, France

Abstract

In the case of classical high-intensity discharge lamps (high-pressure mercury or high-pressure sodium lamps) the current intensity do not change the colour emission of the lamps. Only the integral flux is modified proportionally to the power input. But, for the metal-halide lamps some of the metal spectral lines are amplified by increasing the power input. In this paper, the spectral emission change of Uvaprint 250 LE, UV Bluepoint and GL 150 lamps are studied with respect to the power supply..

Keywords

Metal-halide lamps, Index colour rendering, Spectral flux changing.

Submitted at: Aug. 22, 2003
Accepted at: March 15, 2004

Citation

M. Cristea, B. Lafitte, ON THE EMITTED SPECTRUM CHANGING IN METAL-HALIDE LAMPS, Journal of Optoelectronics and Advanced Materials Vol. 6, Iss. 1, pp. 87-94 (2004)