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Meadowlark Optics - Wave Plates 6/24 LB 2024

Spotting Bad Apples Fast

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Paul Martinsen and his colleagues at the Horticulture and Food Research Institute of New Zealand in Hamilton think that they have found a technique that can quickly spot bad apples. Using a time-delayed-integration spectrometer, users can measure the low-light near-IR spectra of moving apples on a conveyor belt, collecting light from each sample and tracking it electronically via time-delayed integration. According to Martinsen, spectra can be collected from a photon flux approaching 40,000 photons per second at the detector (or some 9 x 10—15 W at 800 nm). This measure is roughly six...Read full article

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    Published: October 2002
    FeaturesSensors & Detectorsspectroscopy

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