MEASUREMENTS OF ANGULAR DISTRIBUTION OF LUMINOUS INTENSITY AND TOTAL LIGHT FLUX OF LIGHT EMITTING DIODES
用积分球和分布光强计测量红、黄、绿发光二极管(LED)的总光通

In this paper, we report the design and performance of a rotational type lumious intensity distribution measuring device and an integration sphere. They can be used to measure the angular distribution of luminons intensity and total light flux of LED's. Geometry of the experimental arrangement is described in detail. Measure-ments have been carried out on red emitting GaAsxPx-1, yellow and green emitting GaP and up-conversion GaAs diodes.