According to LM-79, how to choice integrating sphere and goniophotometer?

Answers (1)

According to LM-79, there's have two way can test luminous flux of led and others lamp. The first way is use integrating spher and spectrophotometer test system, such as LPCE-2(LMS-9000A) High Precision Spectroradiometer Integrating Sphere System, this system is main for led luminaires, it can test lumen, cct, cri, and others parameters; the second way is use goniophotometer, such as LSG-1800B High Precision Rotation Luminaire Goniophotometer, this system is suitable for all kinds of lamps, and it can test total luminous flux, light distribution intensity cruve, and export IES files. Both instruments is recommend by IESNA-LM-79, IEC etc, both can meet most of company and third party test institution's requires.

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