The
parabolic reflector
is an efficient
reflector
which can collect a great deal of light from the
lamp
and reflect it in a narrow concentrated beam. When a
lamp
is placed at the focal point of a parabolic reflector, regardless of the angle at which the rays of light hit the reflector, they will all be reflected parallel to the optical axis.
As a result, the diameter of the light
beam
will be equivalent to the diameter of the
reflector
used. For this reason, parabolic reflectors are particularly suitable for luminaires designed to produce a narrow
beam
of light.
Theatrical luminaires with parabolic reflectors include: searchlights, low-voltage
lamp
units, beamlights, PAR lamps, special floodlights and cyclorama lights. which have a partly parabolic reflector.
