Construction of Binoculars in detail
Answers
Answer:
Binoculars or field glasses are two telescopes mounted side-by-side and aligned to point in the same direction, allowing the viewer to use both eyes (binocular vision) when viewing distant objects. Most are sized to be held using both hands, although sizes vary widely from opera glasses to large pedestal mounted military models.
Unlike a (monocular) telescope, binoculars give users a three-dimensional (3D) image: for nearer objects the two views, presented to each of the viewer's eyes from slightly different viewpoints, produce a merged view with an impression of depth.
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Explanation:
Binoculars rely on pairs of prisms to fold and erect the image in each tube assembly (binocular half). Doubled roof prisms are small and light enough that a pair of binoculars designed around them can have short, straight, and lightweight tubes. Thus, they are very compact and are the better choice when weight and size are key considerations. Porro prisms and other types of prisms are bulkier and, when paired, result in a tube design that bends out at a side angle. Porro prism binoculars have the classic bulged tube designs and are larger than roof prism pairs.