Patent invented integrating sphere for luminous flux and spectral distribution measurement special of T5/T8 LED tube. LED tube is burn-in on a test pole. While doing test, the test pole is directly pushed into the sphere from a special port of the sphere without operation of opening sphere. The uninterruptible power measurement could be achieved for batching testing. It increases more than 5 times efficiency for tube lamp measurement. The interfaces for typical sphere are reserved.

It is specially designed for accurate measurement of power LED devices, modules and lamps.

The test lamp can be measured at any angle as the working direction(up, down and tilt) in the rotating sphere. The rotating sphere can stop in any position for the measurement requirements of 2π side openings geometry and 4π central geometry. The sphere also can be conveniently and safety controlled to rotate to any position for lamp installation. The measuring equipment is fixed all the time to ensure high accuracy photometery and colorimetery measurement.