Basics:GS=Gap Short (shortened electrode space)DE=Double Ended (double-sided lamp with threaded pin)SE=Single Ended (one-sided lamp)PAR=Lamp built in a parabolic reflector HMP=Due to their special filling and to their electrode system, HMP-lamps cannot only be "dimmed", but also be "boosted", i. e. be operated beyond their rated power. During this, the light technical characteristics, such as color temperature, color rendering index and light output are practically constant during "dimming" and "boosting".
HMI / MSR / HMP / OMI lamps
Extremely high light output
Best color rendering
Light output three to four times higher in comparison to filament light
Light is generated via an arc between two electrodes
Spectrum similar to daylight
Constant color temperature and color rendering behaviour over the whole lamp life
Halogen metal evaporation lamps provide a spectrum composed of a lot of lines, in contrast to temperature radiators, as halogen-incandescent lamps
