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Advantages and disadvantages for total flux test of Goniophotometer

Goniophotometers provide measurement of luminous intensity distribution as well as total luminous flux. Goniophotometers can measure total luminous flux of SSL products of relatively large size (corresponding

to dimensions of traditional fluorescent lamp luminaires) while they can measure small SSL products as well. A goniophotometer is installed in a dark room, normally temperature-controlled, and is not subject to heat accumulation from a source being measured. Care must be taken, however, for drafts from ventilation that might affect measurement of SSL products that are sensitive to temperature. Measurements with a goniophotometer are

time-consuming compared to a sphere photometer. Goniophotometers using broadband photopic detectors are susceptible to the spectral mismatch errors noted above. In fact, correction for spectral mismatch can be more difficult if there is significant variation in color with angle.

Generally, when integrating sphere system and Goniophotometer test light source, the difference of data is not large. If test luminaries, the test result of Goniophotometer should be as the criterion, of course, it should ensure that the calibration of Goniophotometer accurate. According to formal test requirements, integrating sphere system is to test for light source, Goniophototmeter is to test for luminaires.

Lisun LSG-2000 is an automatic light distribution intensity 3D curve testing system. The measuring distance is from 5m to 30m. It can measure all types of lighting sources, LED or HID luminaires such as indoor and ourdoor luminaires, roadway luminaires, street lamps, flood lights and other kinds of luminaires.

Lisun LSG-2000 Moving Mirror Goniophotometer System is widely applied to Luminaries manufacturing enterprise and lab, such as Sharp Electronics in Memphis TN(USA), CS TECH MEXICO, S.A. DE C.V. (Mexico), DORADO Praha s.r.o. (Czech) etc. The reason why Lisun can win some many customers is because we always practice the motto of right products, right price and right service. Lisun will continue feedback good quality products and superior service in the feature.

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