What is Lumen(lm)? Q.What is Lumen(lm)? A:Lumen is the international(SL)unit of luminous flux, a measure of overall light emitted by a light source. What is Candela(cd)? Q. What is Candela(cd)? A:Candela is the international(sl) unit of luminuous intensity,a measure of light emitted by a light source in a particular direction. Any given light source wil...
Date:
2015
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07
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23
Views：425
What is Beam Angle? Q.What is Beam Angle? A:Beam angle is the angle between two directions for which the luminous intensity is 50% of the maximum intensity as measured in a plan through the nominal beam centerline. Beam angle of a bulb gives an idea of how the light beam spreads away from the beam center.
Date:
2015
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07
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23
Views：326
Q:Is the price including the frieight? A:No,all our price don't include any shipping cost,you need to pay the shipping cost in advance. What s the advantage of using LEDs over traditional incandescent lightQ: What's the advantage of using LEDs over traditional incandescent lighting? A: There are quite a few advantages to using LEDs. Generally they are heat less, use up to 90% less energy, and last up to 30 years. They are also smaller and do not contain any dangerous chemicals like mercury. They can readily be put in places that have always been too small or out-of-the-way ...
Date:
2015
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07
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23
Views：43
How high is my energy consumption on lighting? Q:How high is my energy consumption on lighting? A:According to independent research lighting amounts for 18% to 22% of our total energy consumption What are the restricted materials mandated under RoHS? Q: What are the restricted materials mandated under RoHS? A:The substances restricted under RoHS are...
Date:
2015
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07
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23
Views：44
Q. What is LUX(lx)?A:Lux is the international(SL)unit of illuminance, a measure of light arriving at a surface, 1 lumen per square foot equals 1 foot candle, while 1 lumen per square meter equals 1 lux . [lux = lumen/m2]
Date:
2015
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07
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23
Views：442