dmx_definitions:led
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— | dmx_definitions:led [2013/03/12 22:03] (current) – created - external edit 127.0.0.1 | ||
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+ | ====== LED ====== | ||
+ | LED stands for **L**ight **E**mitting **D**iode. | ||
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+ | For more information see [[wp> | ||
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+ | A new wave of lighting is now being produced that use multiple LEDs instead of traditional bulbs. | ||
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+ | Originally these LED fixtures used low powered LEDs to create the light needed, for example a [[par_can|Par Can]] shell would be used to mount a board that contained 153 LEDs, this would have 51 each of Red, Green and Blue ([[RGB]]) and by varying the dimming level of each these colours you could produce lots of different colours. | ||
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+ | Newer fixtures are now using 1W and 3W LEDs these are far more powerful than the original LEDs used and give of a more powerful light for less LEDs. | ||
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+ | Due to the nature of LEDs in an [[RGB]] LED fixture it was very hard to produce a true white colour it always seems to have a slight blue hint to it. This has been overcome by producing units that have white LEDs. I have not seen any LED fixtures that have both the Red, Green, Blue and White LEDs in them together, they have always been seperate fixtures. | ||
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+ | LED fixtures started as colour wash lights, but now due to clever lenses can be used as spots. | ||
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+ | LEDs are now being fitted to [[moving head|moving head]] and [[scanner|scanner]] type fixtures, so now they are getting [[gobo|gobos]] fitted to them to create patterns. | ||
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+ | Another type of LED fixtures are colour bars, these vary in the number of LEDs and the size/power of LEDs used and depending on how they are manufactured will either be used as one light showing any single [[colour|colour]] controlled by [[RGB]] or they might have many sections that can be individually controlled to produce a different [[colour|colour]] controlled by [[RGB]], obviously this type of fixture is far more expensive than the single colour variety. A lot of these Colour Bars can be linked enabling you to create impressive colour chase patterns. | ||
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+ | LEDs are also being used in video wall displays. These can be small units from something like 16x16 pixels, each pixel being represented by at least 1 of each red, green and blue LED's, upto something like 256x256 pixels. These are then joined together, seamlessly to create a video wall. Depending on the manufacturer and specification these range from a few hundred pounds to thousands of pounds. LED video walls are used in a lot of televised music events, such as the X-Factor, most bands of fame usually have some sort of video wall on stage. | ||
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+ | Advantages of using LEDs are low power consumption, | ||
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+ | The price of LED equipment is falling all the time and I am sure we are going to get some very exciting LED fixtures in the near future that just have not been possible with conventional bulbs. | ||
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+ | ====== ====== | ||
+ | [[: | ||
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dmx_definitions/led.txt · Last modified: 2013/03/12 22:03 by 127.0.0.1