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To Concentrate LED Light to Give You a Better Illumination Condition From:http://www.lgiled.com   Reporter:   Date:2013/9/22 19:49:45   Tags:cree-led-bulb led-bulb-lowes

LED lights, like led panel light, uses the light emitting diode as semiconductor chips actually, which puts out light far more efficiently than incandescent or fluorescent bulbs. And in comparison with traditional lights, LED lights have a longer service life. But LEDs are inherently non-directional, or they shine lights in all directions. You need to take some measures actually to concentrate the LED lights.

Step 1
You are advised to select a high-power LED. The LED can be a single superbright white LED, an array of white LED, or several colored LEDs all assembled on a single flat carrier.

Step 2
Obtain the specification sheet for the selected LED and determine the area of the light emitting region. Determine the desired angular spread of the light beam. In general, the smaller angle can provide a brighter illumination since the areas that need to illuminate is limited.

Step 3
Use a formula that the diameter of the output aperture is equal to the diameter of the active area of the LED determined in the above steps to calculate the diameter of the output aperture.

Step 4
Choose a CPC with input aperture determined in the above step and an output aperture as calculated above.

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