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Sealed beam PAR lamp. When the lamp burns out or breaks, the whole assembly must be replaced. A PAR lamp consists of a light source, with lens and a parabolic reflector with a smooth aluminium surface determining the spread of the beam. The most common sealed beam type combines these three elements into an integral unit.
It uses two reflectors. The primary reflector is a parabolic reflector and the secondary reflector is a spherical reflector. The parabolic reflector directs the light into nearly parallel beams, and the spherical reflector is placed in front of the lamp to reflect light from the lamp back to the parabolic reflector, which reduces spill.
The most common modern applications of the parabolic reflector are in satellite dishes, reflecting telescopes, radio telescopes, parabolic microphones, solar cookers, and many lighting devices such as spotlights, car headlights, PAR lamps and LED housings. [14] Lighting the Olympic Flame with a parabolic reflector
A-lamp, Parabolic aluminized reflector lamp , reflector lamp (R), bulged reflector lamp (BR) (refer to lamp shapes) Obsolete types: limelight, carbon button lamp, Mazda (light bulb), Nernst glower; Novelty: Lava lamp; Special purpose: heat lamp, Globar, gas mantle; Halogen – special class of incandescent lamps; Nuclear: self-powered lighting ...
As there is no Parabolic Aluminised Reflector in an LED 'PAR', they would be more accurately referred to as 'LED flood lights'. Many LED fixtures are now made using a small number of high-output diodes that allow the beam to be focused on a "hard edge", allowing full use of gobo/beam effects. LED lighting instruments used on Radiohead's 2008 tour
Dive flashlight with different reflectors and collimator for LED XHP70.2. A reflector with an approximately parabolic shape concentrates the light emitted by the bulb into a directed beam. Some flashlights allow the user to adjust the relative position of the lamp and reflector, giving a variable-focus effect from a wide floodlight to a narrow ...
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