Now the C9920 series has been extended for characterization of LEDs and SMD LEDs by measuring total luminous flux and efficiency (C9920-22), CIE averaged LED intensity (C9920-23), angle dependent emission characteristics (C9920-21) and colorimetric parameters such as chromaticity and colour rendering.
Like the established systems of the C9920 family the new types use an ultrasensitive CCD spectrometer incorporating cooled
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