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Parameters of Typical LED
Parameter of typical LEDs
Color
Chip material
If(ma)
VF(v)
LPK(nm)
LV(mcd)
View angle
Red
AlGanInP
20
2.0
620
1000-8000
15-120°
Green
InGaN
3-3.6
525
1000-25000
Blue
InGaN
3-3.6
460
1000-6000
Yellow
AlGanlnP
2.0
590
1000-9000
White
InGaN
3-3.6
--
1000-25000
Warm white
InGaN
3-3.6
--
1000-20000
LED lighting terms
Luminance
A measure of the brightness or luminous intensity of light, usually expressed in units of Candelas per square meter(cd/m2) or foot Lamberts. 1 FL = 3.426 cd/m2. Unit: Gannet (nit)
Intensity
Refers to the bright level of light, the luminous intensity per unit area. Unit: Candlelight (cd)
Luminous flux
The total amount of visible light produced by lighting source per second. Unit: lumen (lm)
Wavelength
The changes of light color strength can be described through data, we call this data wavelength. The light wavelength we can see is in the range between 380 to 780nm. Unit: nanometer(nm)
Light efficacy
Refers to the luminous flux divided by the lighting power source, It is an important indicatior to measure the energy source. Unit: Watts per lumen(Lm/W)
Color performance
Refers to the showing extent on objects of the lighting source, in other words, the real degree of color, usually called "color-rendering" Units: Ra
Glare
When the lighting source color is the same as the radiator at certain temperature, the temperature of the black body is the color temperature of the lighting source, it describes the color of a light source by comparing it to the color of a blackbody radiator at a given temperature. Unit: Kelvin (K0
Protection level
The IP level is described by two figures: the first one refer to protection level against dust (from 0 to grade 6), the second against water (from 0 to grade 8). Devices with a higher IP level keep the internal components safe and clean
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