LISUN integrating sphere is LED light bulb testing system

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An instrument called an integrating sphere is used for the purposes of optical testing and measuring of LED light bulbs in addition to other kinds of lighting systems. It is nothing more than a hollow sphere made out of a material that is both diffuse and reflective that collects and averages the light coming from a source in order to provide a constant output that is easy to measure.

When a light source, such as an LED bulb, is placed inside of an integrating sphere, the light from the source is reflected and diffused off of the walls of the sphere several times, which ultimately results in a light distribution that is both homogeneous and isotropic.

This makes it feasible to quantify the total luminous flux of the LED bulb, in addition to other optical parameters such as its color temperature and color rendering index (CRI). It is possible to make adjustments to LED light bulbs based on the results of the measurements that were gathered from the integrating sphere. These findings may be used to evaluate the effectiveness and quality of LED light bulbs.

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