40 Watts LED Corn Bulb
Product Name: 40 watts LED corn bulb
Product Code: HSL-CN40W
IP Rate: IP65
Power: 40 Watts
Base Holder: E40 / E39 / E26 / E27
Input Voltage: AC 85-265VAC 50/60Hz
Power Factor(PF): >0.9
LED driver: Isolated with glue protected
LED Source: SMD2835 26-28lm/led Epistar chip OR 30-34lm/led Epistar chip
Lumen Flux: 5200LM +/-3% OR 7200LM +/-3%
Lumen Efficiency: 130lm/W OR 180lm/W
CRI (Ra): >80Ra (If only Ra>70, the lamp will be more brighter)
Beam Angle: 360 degrees
Cover Type: Clear / Frosted
Color Temperature: WW, NW,PW,CW
Materials: Aluminium body + Aluminium PCB + PC cover + Fireproof PC base
40 watts LED corn bulb
luminous efficacy of a light source
The light flux emitted by the light source divided by the power of the light source.The unit is lumen per watt (lm/W).
The ratio of the total luminous flux emitted by the luminaire to the total luminous flux emitted by all the light sources in the lamp is also called the light output ratio of the lamp.
The ratio of the total luminous flux emitted by the lamp to the power input under the prescribed conditions of use.The unit is lumen per watt (lm/W).
uniformity ratio of illuminance
The ratio of the minimum illumination on the surface to the average illuminance is U0.
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