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LED corn light factory introduction to LED lighting emitting rate For the application of LED lighting, only expresses the light efficiency, luminous efficiency and install the light source to illuminate the overall efficiency of equipment after the comprehensive efficiency () are different concepts. LED corn light manufacturers think luminous efficiency is the external quantum efficiency with visual acuity (sensitivity) of the human eye to light to represent the value. The external quantum efficiency is launched to the LED chip and encapsulation of photon number relative to the flow through the LED off the electronic number proportion (current). Combination of blue LED chip and fluorescence the external quantum efficiency of white LED is relative to the internal quantum efficiency (in the LED chip light-emitting layer has the number of photons flowing through the LED chip electronic number (current) ratio), chips of light extraction efficiency (remove light of the proportion of the outside of the LED chip), the conversion efficiency of phosphor (chip sends out the light to fluorescent converted to the proportion of different wavelengths) on the body and the encapsulation of light extraction efficiency (by the LED light and fluorescence emission to the outside of the encapsulation ratio) is the product of the decision. LED corn lamp manufacturers Part of the photons or generated in a light-emitting layer in the LED chip is absorbed, or constantly reflection within the LED chip, the LED chip. Therefore, the external quantum efficiency is lower than internal quantum efficiency. 100 lm/W white LED luminous efficiency, its input power only 32% as light output to the outside. The remaining 68% into heat energy. LED corn light factory arrange release. |
