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Imager Detects Bruised Fruit

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DRESDEN, Germany, Oct. 22, 2008 -- Ever bought what you thought was a unblemished apple or peach, only to have it develop a nasty-looking bruise the next day? Well, researchers at the Fraunhofer Institute for Photonic Microsystems (IPMS) in Dresden feel your pain, and have developed an affordable way to do something about it. Hyperspectral imaging can tip grocers off to which apriots or other fruits on display have been manhandled enough to develop blemishes that quicken their spoilage, but the equipment is very expensive. So scientists at Fraunhofer IPMS developed a cheaper version of the technique that can also be used to...Read full article

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    Published: October 2008
    Glossary
    broadband
    Indicating a capability to deal with a relatively wide spectral bandwidth.
    diffraction
    As a wavefront of light passes by an opaque edge or through an opening, secondary weaker wavefronts are generated, apparently originating at that edge. These secondary wavefronts will interfere with the primary wavefront as well as with each other to form various diffraction patterns.
    infrared
    Infrared (IR) refers to the region of the electromagnetic spectrum with wavelengths longer than those of visible light, but shorter than those of microwaves. The infrared spectrum spans wavelengths roughly between 700 nanometers (nm) and 1 millimeter (mm). It is divided into three main subcategories: Near-infrared (NIR): Wavelengths from approximately 700 nm to 1.4 micrometers (µm). Near-infrared light is often used in telecommunications, as well as in various imaging and sensing...
    light
    Electromagnetic radiation detectable by the eye, ranging in wavelength from about 400 to 750 nm. In photonic applications light can be considered to cover the nonvisible portion of the spectrum which includes the ultraviolet and the infrared.
    broadbandbruiseddiffractionElectronica 2008FraunhoferFraunhofer IPMSfruitgratingshyperspectralimagerIndustry EventsinfraredlightmicroscannerMicrosystemsmirrorsphotonicSensors & Detectorsspectral imagerwavelengths

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