LED Lighting Blog

1W LED = 3W the CFL (energy saving lamps) = 15W incandescent
3W LED = 8W the CFL (energy saving lamps) = 25W incandescent
4W the LED = 11W the CFL (energy saving lamps) = 40W incandescent
8W the LED = 15W the CFL (energy saving lamps) = 75W incandescent
12W LED = 20W the CFL (energy saving lamps) = 100W incandescent
All kinds of lighting color temperature table (K)
The color temperature is a measure of the value of the light color, indicating that the most common light source spectral quality indicators.
3300K warm light (yellowish orange) <5500K is white, yellow, 5500K 6
500 is white, quite the midday sunlight. > 6500K is white bluish,
> 8000K for cool light. The following are all kinds of lighting color temperature value, easy to produce the effect of different light sources.
K is the unit light chromaticity table
Light K
Candle flame 1500
Household incandescent 2500-3000
Inflatable 60-watt incandescent light 2800
500-watt projection lamp 2865
100-watt tungsten lamp 2950
1000-watt tungsten lamp 3000
500-watt tungsten lamp 3175
Amber flashing signal lights 3200
R32 reflector floodlight 3200
Zirconium concentrated arc lamp system 3200
Reflection mirror floodlights 3400
Warm white fluorescent lamps 3500
Clear flash signal 3800
Cool white fluorescent lamps 4500
Day of the floodlights 4800
White flame carbon arc lamp 5000
M2B flashing signal lights 5100
Midday sunlight 5400
The sun of the high-intensity arc lamp 5550
Summer, direct too the sun 5800
10:00 to 15:00 of direct sunlight 6000
Blue flashing signal lights 6000
Daylight fluorescent 6500
Noon clear sky sunlight 6500
Cloudy light 6800-7000
High-speed electronic flash tube 7000
Simple color temperature table
Candles and fire the following sunrise and sunset 2000K 1900K
One hour after sunrise the household tungsten 2900K sunlight 3500K
Photography with tungsten 3200K morning and afternoon sun 4300K
Photography quartz lamp 3200K ordinary day 5000 ~ 6000K
220 V fluorescent 3500 ~ 4000K sunny noon sun 5400K
Ordinary fluorescent lamp 4500 ~ 6000K above 6000K cloudy
HMI lights 5600K sunny day when the shadow of 6000 ~ 7000K
Mercury lamp 5800K snow 7000 ~ 8500K
The TV screen from 5500 to 8000K blue sky cloudless sky above 10000K
General supermarket light illumination 700 ~ 900Lux, and department stores generally is 800 ~ 1500Lux for, led streetlight, but also vary according to the different goods and special display requirements. Color temperature: the light emission color of the light and blackbody radiation at a temperature of a light hue at the same time, the temperature of the blackbody is called the color temperature of the light source.
Because the part of the light emitted by the luminous flux is referred to as white, so the temperature of the color table or color temperature of light that used to refer to the extent of its light hue dialogue, and to quantify the performance of light source color. According to the theory of Max Planck, a complete absorption standard blackbody radiation capacity of the heating temperature is gradually increasing luminosity also changes; on the CIE color coordinates of blackbody curve shows the blackbody jujube by jujube yellow dates yellow and white, red dates, orange white date blue and white of the process.Blackbody is heated to a related color temperature of the light source and light the same or close to the light color temperature, the definition, known as color temperature, absolute temperature K (Kelvin or Kelvin) for the unit (K = ° C +273.15) . Blackbody heated to a red color, is about 527 ℃, 800K and other temperature changes in light color.
The light color is more bluish, the color temperature of the higher; reddish color temperature is lower. Day which light light color in tandem with the time change; 40 minutes after sunrise and the light color compared to yellow, the color temperature of 3000K; afternoon sun is white, and rose to 4800-5800K; cloudy noon about 6500K; color cast red light before sunset. The color temperature dropped to 2200 K.