AAA 50 x 50 mm2 Solar Simulator Class AAA ESS-F5-3A Solar Simulator is designed in accordance with the standards of IEC 60904-9 and ASTM E927 to measure the efficiency for solar cells, of which the output beam size is 50 x 50 mm2. The optical fiber light guide enables the flexible illumination and also can be integrated into a glove box, which can exactly match your research needs. SS-F5-3A can measure the current values from 0.1 mA to 1 A when equipped with the source meter, it is applicable to any kind of solar cells measurements. Colimation Angle: ≤ 5°