Modern light sources require good control to maximise energy efficiency
and light distribution.
Fluorescent linear light source brightness diffused by plastic lenses
and other materials :
UNSAFE - FIRE HAZARD
INEFFICIENT
PRONE TO DEGRADATION
Minimum constraint on light output together with energy conservation
results in the need for high performance but economically priced reflector
systems.
With a symmetrical reflector shape the light directed downwards
is generated from the area shown.
Similarly sideways reflection of light is generated from the lower
portion of the reflect.