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5a3f168a51ba6af38e506aa29af2ac42

jarrod-allen
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5a3f168a51ba6af38e506aa29af2ac42

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  1. A lens is an optical device which transmits and refractslight, converging or diverging the beam. A simple lens consists of a single optical element. A compound lens is an array of simple lenses (elements) with a common axis; the use of multiple elements allows more optical aberrations to be corrected than is possible with a single element. Lenses are typically made of glass or transparentplastic. Elements which refract electromagnetic radiation outside the visual spectrum are also called lenses: for instance, a microwave lens can be made from paraffin wax.

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