LED Measurements – the Truth, the Whole Truth & Nothing but the Truth Nov 16, 2009

The JAZ Light Meter is based upon a CCD spectrometer, but unlike standard instruments, the JAZ is fully self-contained and does not need to be tethered to a PC. With on-board photometric processing, plus battery pack, data storage and an integrated OLED display, the JAZ Light Meter is the first truly portable spectroradiometer for measuring the spectral irradiance and illuminance of light sources.

The JAZ Light Meter functions as an illuminance colorimeter but unlike tristimulus filter-based meters, the JAZ reports the correct illuminance (in lux) regardless of the type of light source under test. It has become common knowledge that inexpensive lux meters can give very misleading readings with narrow spectrum light sources such as LEDs.

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