LEDs are a fantastic technology. They are more efficient and less polluting than compact fluorescent light bulbs, and come with a host of other advantages. But one advantage that is certainly new to us is the possibility of using them to transmit data.Or at least, so says the Smart Lighting research team at Boston University.
Because LEDs can cycle on and off millions of times per second, they can, in effect, become wireless routers for information transport. So, as long as your device is in a well-lit area of the office, it will automatically have high-speed internet streaming into it.
The advantages are fairly obvious...no need for a separate router consuming extra energy. The LED bulbs would actually consume less energy (by cycling off a portion of the time) and the quality of the light would not change perceptibly.
Of course, the disadvantages are also pretty obvious...the biggest one being shadows. Unlike RF transmission, light can't transmit through walls..or even sheets of paper. So you would always have to make certain that you were in a well-lit area when working. This also means that the lights would always have to be on...fine for large buildings, but not necessary in offices with large windows.
Via GoodCleanTech
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written by Rob, October 10, 2008
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written by Clinch, October 10, 2008
And if you take in to account their lifetime compaired to other bulbs, they work out cheaper than both incandescents and CFLs.
As for replacing wireless routers with LED bulbs, I can't see it being effective, and you would still be the issue of receiving outgoing data (as LED lights can't act as receivers, only transmitters [or can then? {no they can't}]).
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written by Martoni, October 10, 2008
Yes led can act as receiver. According to this paper, a simple LED can be a light sensor if used in reverse mode.
I tested it with a simple red-led branched on FPGA and that work - not well but, that work -.
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written by NJCynic, October 12, 2008
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written by Clinch, October 14, 2008
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written by Michelle, January 09, 2009
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written by James, October 09, 2009
We have launched AC85-260V Dimmable power LED bulb, see below brief introduction:
1. A60 Bulb
Available Voltage: AC85-260V
Power Option: 3*1W 3*3W 5*1W 5*2W
Light Source: Cree
Available Dimmer: Traditional Triac Dimmer (used for halogen lamp before)
Dimming Range: 0-100%
Output Lumen:
Cree 3*2W Neutral White: 400-450LM
Warm White: 300-350LM
Cree 3*3W Neutral White: 450-500LM
Warm White: 400-450LM
2. Gu10 E27
Available Voltage: AC85-260V
Power Option: 3*1W
Light Source: CREE
Available Dimmer: Traditional Triac Dimmer
Dimming Range: 0-100%
Output Lumen:
3*1W Neutral White: 300-350LM
Warm White: 250-280LM
All these bulbs can replace halogen lamp 35-50W .
If you are interested in them, please kindly let me know, you will find more interested items from our website: www.100LED.com
If you want to test some samples ,kindly please let me know .
Kind regards
James
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