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LED
(Light Emitting Diode) is the light source
that emits light when electric current is
passed through semiconductor.
The size of LED' is generally approx. 3 -
5 mm. |
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CCS is working on making Lights
utilized LED's characteristics.
Major characteristics of LED lights are following.
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 Flexibility
As a LED light consists of a collection of individual
LEDs, it is providing much greater shape-flexibility
compared with other lights and enabling to concentrate
necessary light on necessary area.
Energy
Conservation
Power consumption will be drastically reduced.
Long
Service Life
Depending on operating environment, LED keeps illuminating
for tens of thousands of hours.
Low
Thermal Irradiation
As LED lights contain little heat rays, work pieces
are free from damage by radiated heat.
Flicker-Free
LED lights direct current lighting system, so it
does not flicker like general fluorescent lamps. |
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Blue, green,
yellow, red...
Luminous colour differs depending on the combination
of compounds.
Various LEDs have been developed not only in the
visible light (light which detectable by human eyes)
range, but also in ultraviolet or infrared ranges |
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Since LED emits by semiconductor
device, it is said that the service life is semi-permanent.
However, LED's life is affected on the way of use
or operating environment. |
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On the other hand, the common fluorescent lamps turned on by alternating current. In order to repeat electric discharge in accordance with power supply frequency, the change in light (light and darkness) has arisen. Especially, when the cases of low circumference temperature, or the life have approached, it flickers slow enough that human vision system can respond.