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Laser light shows fully emerged in the early 1970s and became a form of psychedelic entertainment, usually accompanied with a live musical performance on stage or pre-recorded music. The Who , Pink Floyd , Led Zeppelin , Genesis , and Electric Light Orchestra were among the first high-profile rock acts to use lasers in their concert shows in ...
Hunter Industries is a manufacturer of irrigation and outdoor lighting equipment for the landscaping, residential, commercial, agricultural, and golf course industries, [3] based in San Marcos, California. [4] Hunter Industries also offers sanitary dispensing products such as automatic paper towel and soap dispensers.
LEP stands for Laser Excited Phosphor. The light source is a blue laser diode, which is directed at a phosphor layer to make white light. With the first LEP flashlight available in 2018, there are currently a few dozen LEP flashlights, mainly from China. At the moment, there are 2 types of LEP modules used. [15]
To give another example, of a more powerful laser—the type that might be used in an outdoor laser show: a 6-watt green (532 nm) laser with a 1.1 milliradian beam divergence is an eye hazard to about 1,600 feet (490 meters), can cause flash blindness to about 8,200 feet (1.5 mi/2.5 km), causes veiling glare to about 36,800 feet (7 mi; 11 km ...
The electrical-to-optical conversion efficiency of modern laser technology can be as high as 85%, [8] and off-the-shelf semiconductor diode lasers can have an output efficiency of around 50%. [9] The optical-to-electrical conversion efficiency of a photovoltaic receiver can be over 50% for monochromatic (or laser) light. [10]
In 2001, Twibright Labs released RONJA Metropolis, an open source DIY 10 Mbit/s full duplex LED FSO over 1.4 km (0.87 mi). [34] [35] In 2004, a Visible Light Communication Consortium was formed in Japan. [36] This was based on work from researchers that used a white LED-based space lighting system for indoor local area network (LAN
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