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Condenser (optics)
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<p>A condenser is an optical <a href="/facts/Lens_(optics)/ejlH6n5c">lens</a> that renders a <a href="/facts/Beam_divergence/7EQX7tY0">divergent</a> light beam from a point light source into a parallel or converging beam to illuminate an object to be imaged. </p><p>Condensers are an essential part of any imaging device, such as <a href="/facts/Microscopes/ldJp0CI3">microscopes</a>, <a href="/facts/Enlarger/R8vf9m4R">enlargers</a>, slide projectors, and telescopes. The concept is applicable to all kinds of radiation undergoing optical transformation, such as electrons in <a href="/facts/Electron_microscopy/XtaBktwF">electron microscopy</a>, <a href="/facts/Neutron_radiation/LVJhCcwL">neutron radiation</a>, and <a href="/facts/Synchrotron_radiation/mTsSKmRz">synchrotron radiation</a> optics. </p>