Metal Halide Mercury Lamp Spectrum

Usually they re rated with a high lumen output of around 100 lm per watt a lamp life of up to 20 000 hours and pretty decent degradation rates.

Metal halide mercury lamp spectrum.

The german physicist leo arons 1860 1919 studied mercury discharges in 1892 and developed a lamp based on a mercury arc. Charles wheatstone observed the spectrum of an electric discharge in mercury vapor in 1835 and noted the ultraviolet lines in that spectrum. A halogen is a monovalent element which readily forms negative ions. Developed in the 1960s they are similar to mercury vapor lamps but contain additional metal halide compounds in the quartz arc tube.

1 how it works. A metal halide lamp is an electrical lamp that produces light by an electric arc through a gaseous mixture of vaporized mercury and metal halides compounds of metals with bromine or iodine it is a type of high intensity discharge hid gas discharge lamp. The lamp uses mercury vapor to create the powerful light like the high pressure mercury vapor but includes other metals halide salts to improve the color. Some manufacturers mix the metal halide technology with others to improve light output and add a few variations into the color spectrum for a more complete solution.

Metal halide lamps are among the most energy efficient sources of white light available today. In 1860 john thomas way used arc lamps operated in a mixture of air and mercury vapor at atmospheric pressure for lighting. They offer high efficacy excellent color rendition long service life and good lumen maintenance. Metal halide salts exhibit lower vapor pressures than the elemental mercury added to the bulb which also serves as a buffering gas to determine the operating voltage of the lamp.