Halogen lamps are similar to incandescent in that they both use filaments. However, in the halogen lamp, the filament in enclosed in quartz glass filled with inert gas. This encourages the filament to burn at a higher temperature giving off a brighter, more intense light.
PAR Lamp
A Parabolic Aluminized Reflector lamp. An incandescent, metal halide or compact fluorescent lamp used to redirect light from the source using a parabolic reflector. Lamps are available with flood or spot distributions.
Tungsten Halogen Lamps
A gas-filled tungsten filament incandescent lamp with a lamp envelope made of quartz to withstand the high temperature. This lamp contains a certain proportion of halogen gas, namely iodine, chlorine, bromine and fluorine that slows down the evaporation of the tungsten. A tungsten-halogen lamp retains most of its initial efficiency over its life, with little lumen loss. Also commonly referred to as a quartz lamp.
Halogens and incandescent lamps are available in a wide variety of wattages & sizes for a huge range of applications.