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Field angle is the angle of the beam of light where it reaches 10% of the intensity of the center of the beam. Most manufacturers now use field angle to indicate the fixture's spread typically in this series (5°, 10°, 19°, 26°, 36°, 50°, 75°, 90°). Older fixtures are described by the width of the lens x focal length of the instrument ...
In 1978 a Dallas, Texas-based lighting and sound company called Showco began developing a lighting fixture that changed color by rotating dichroic filters. During its development, the designers decided to add motors to motorize pan and tilt. They demonstrated the fixture for the band Genesis in a barn in England in 1980. The band decided to ...
Most replacement bulbs do not even include the bases anymore, despite getting only ten in a package and being charged nearly half the price of a new string of 100. For this reason, many Americans treat miniature holiday lights as disposable. In addition, colored lights tend to fade with even brief exposure to weather. Many LED sets are ...
A 230-volt LED filament lamp, with an E27 base. The filaments are visible as the eight yellow vertical lines. An assortment of LED lamps commercially available in 2010: floodlight fixtures (left), reading light (center), household lamps (center right and bottom), and low-power accent light (right) applications An 80W Chips on board (COB) LED module from an industrial light luminaire, thermally ...
One-color light is well suited for traffic lights and signals, exit signs, emergency vehicle lighting, ships' navigation lights, and LED-based Christmas lights Because of their long life, fast switching times, and visibility in broad daylight due to their high output and focus, LEDs have been used in automotive brake lights and turn signals.
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