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Understanding Lenses: Optics and Applications

Discover the world of lenses, optical devices that transmit and refract light, with insights on simple and compound lenses made of glass or plastic. Explore how multiple elements correct optical aberrations. Learn about various types of lenses beyond the visible spectrum.

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Understanding Lenses: Optics and Applications

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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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