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ATEX and IEC Ex Flame-proof Explosion Proof Lighting & Equipment
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01/12/17 Addressing Issues with LED Floodlights and Backlighting

Article - January 12, 2016 By

LED Wall Pack Light – 400W Metal Halide Equivalent

Addressing Issues with LED Floodlights and Backlighting

Floodlights are used to illuminate large locations, such as fields, gardens and remote work sites. In residential areas, they are utilized for security or perimeter lighting around a home. Because of this, the lights push out wide, intense beams in order to cover as much space as possible.

Read on to learn about how to position LED floodlights for your home, and the basic fundamentals of LED backlights.

Positioning LED Floodlights

When positioning LED floodlights, most individuals install the units from a high location, such as a roof, tree or pole; since the fixture must illuminate the target area from top to bottom. Similar to positions for ornamental lighting, luminaries should be angled slightly downwards, pointing to the location. If the fixtures were positioned upwards, the beam would be too tight to cover wide target areas.

Moreover, the beam of the light should not exceed the target area during application. To control the coverage of the beam, it is common for individuals to install visors, shields or deflectors. This can ensure that the light does not leak out to other parts of the location (on windows, ornaments and decorations, or doors). Stray light could also overlap with other fixtures in the area, such as uplights, which could make the configuration appear scattered and messy. To prevent such occurrences, it is acceptable for roughly 50 percent of the light from the fixture to hit the object or target area.

Positioning LED floodlights requires gauging the distance between the fixture and the object or target area. If the luminary is too far away from the target, beam loss could occur above the object, causing considerable amounts of light to leak out during illumination. On the other hand, if the floodlight is too close to the target, the light could appear too concentrated, and other parts of the object may not be illuminated adequately. According to Spain’s OPCC and OTPC Guide for Outdoor Lighting, the following formula can be used to determine the optimal, median level for floodlights for even distribution: total lumens installed/in m2 x 0.8 x 0.7 x 0.7 (lux).

Installing LED Floodlights

When installing more than one floodlight in the area, it is best practice to allow the beams to overlap slightly, to ensure maximum coverage. “Failure to do this can sometimes be rectified by shifting the angle of the lights. In other cases, you may be forced to move the entire light and this can be a major task,” said, a website that specializes in DIY projects for small businesses and homeowners. In most cases, multiple floodlights are used when the target area cannot be covered by a single floodlight.

If installed correctly, individuals outside of the illuminated area should be able to view activities and movements within the beam clearly. Simply put, if an individual, positioned under the scope of the floodlight, were to wave at a car passing by, the driver should be able to see the action effortlessly.

LED Backlights

LED backlights are fixtures that illuminate objects from behind. This technique is commonly found in modern homes (behind furniture, trees, mirrors or cabinets), and offices. LED light strips are used for backlighting, due to its even lighting properties. In the advertising industry, LED backlights are applied to signs and billboards to enhance visibility after sunset.

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