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Introduction about PAR light

Parabolic aluminized reflector lamps, also known as PAR lamps. Classic PARs consist of reflectors and sealed beam lights, simliar to the headlights of a vintage car. The glass case at the bottom of the bulb has a bowl shape and is treated with aluminum as a built-in reflector. The filament is precisely placed at the focal point of the bowl mirror so that light can pass through the lens in parallel to produce a light beam from a compact, lightweight lamp.
 
PAR light has four main components: lens, mirror, base and filament.
 
Due to the fixed connection between the reflectors, bulbs and lenses of the PAR lamps, the only way to change the light propagation is to replace the bulb or replace the lens. PAR lamps mainly include narrow-beam spotlights, narrow-beam spotlights, medium-beam floodlights, and wide-beam floodlights. What is the quickest way to distinguish this difference? The more you see the cross-section on the lens, the wider the spread of light.
 
As a standard light bulb,PAR lamps are commonly used in large areas of intense light; you will see that they are often used as external lighting, especially as work lights. The small PAR lamps are ideal for creating scenes that require “spotlighting” or intense real light sources; in private commercial locations, you can often see PAR lights are installed on the top of your head. The beam produced by the PAR lamp is elliptical and it can change the lighting angle either vertically or horizontally by rotating the bulb.
 
The PAR lamp has different model number – PAR 20,PAR 30 or PAR 38, depending on the lens diameter (multiplied by 8). Divide the number of models by 8, the resulting number is the lens diameter (in inches). Therefore, the PAR lamp 30 has a lens diameter of 3.75 inches.

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Myron Su Wechet