Request InfoMKS Ophir, Light & MeasurementOphir Photonics Group’s 3A-IS optical power sensor, with the AUX-LED self-absorption accessory, is designed to measure the optical power of divergent, narrowband light sources such as lasers and LEDs. The integrating sphere and photodiode sensor system measures light sources from 350 to 1100 nm. It uses two 40-mm integrating spheres in series and a photodiode detector. The light intensity on the sensor is significantly reduced, allowing measurement of powers up to 3 W. 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