CLEOPATRA

Measurement of the light uniformity

The Wand Style Photodiode Sensor from Newport, 918D-ST-SL 400-1100nm, can be placed in front of the Detector for calibration and with additional pinhole to measure the spatial power distribution.

Wand Style Photodiode Sensor from Newport

With help of the multi-dimensional Sweep Measuring procedure shown on the LabView screenshot a spatial power map measure can be started.

multi-dimensional Sweep Measuring procedure shown in LabView

Measured spatial power map with LED illumination shows a non-uniformity of 0.3% for most of the scanned surface of Ø 40mm.

Measured spatial power map with LED illumination shows a non-uniformity of 0.3% for most of the scanned surface of Ø 40mm