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Cognex Corp. - Smart Sensor 3-24 GIF LB

Photonic Instrumentation Aids Cosmetic Measurements

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Adding objective data to subjective descriptions of product color and client skin condition improves brand loyalty.

Dr. Christine Connolly, Contributing Editor

As with all manufacturers of colored products, cosmetics companies use specialized measuring instrumentation to assist in quality control. However, cosmetics present unique challenges: Lipsticks and foundation creams are difficult to measure with contact instruments, and translucent shampoos and nail polishes require techniques that depend on more than just ordinary reflectance. To complement standard instrumentation, some companies have collaborated with manufacturers to develop equipment to address specific needs. Using a broad range of photonic techniques, from optical microscopy and...Read full article

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    Published: July 2005
    Glossary
    raman spectroscopy
    Raman spectroscopy is a technique used in analytical chemistry and physics to study vibrational, rotational, and other low-frequency modes in a system. Named after the Indian physicist Sir C.V. Raman who discovered the phenomenon in 1928, Raman spectroscopy provides information about molecular vibrations by measuring the inelastic scattering of monochromatic light. Here is a breakdown of the process: Incident light: A monochromatic (single wavelength) light, usually from a laser, is...
    Basic ScienceConsumerdigital imagingFeaturesMicroscopyoptical microscopyRaman spectroscopySensors & Detectorsspecialized measuring instrumentation

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