LED lumen test with LISUN integrating sphere system
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An LED lumen test using an integrating sphere system includes measuring the quantity of light, also known as luminous flux, that is emitted by an LED light source with the use of a measuring tool called an integrating sphere. The integrating sphere is a spherical hollow with a diffuse, white inner surface that is used to gather light from a source and disperse it uniformly in all directions. It does this by using a reflective surface on the inside of the sphere. The LED light source is installed at the entry port of the integrating sphere, and the light that is emitted is allowed to bounce off of the inner diffuse surface of the sphere. This results in the creation of a consistent and diffuse light distribution within the sphere. Because of this uniform light distribution, it is possible to get an exact measurement of the total quantity of light that was released by the LED. This is made possible by the fact that all of the light that was emitted from the LED was caught and disperse