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Lens optical mechanism

A lens optical mechanism is a system of optical elements based on lenses that refract a light beam to form an image of an object. This mechanism is commonly used in binoculars and telescopes with lenses composed of several lenses. The advantage of the lens mechanism is its simple construction and the absence of the need to maintain mirrors. On the other hand, it suffers from greater optical aberrations (image errors) and greater weight.

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