Ball lenses - Tecnottica Consonni

Ball lenses

Ball lenses are optical elements able to focus or collimate the input light radiation, depending on the geometry of the source, and can be considered as two plano-convex lenses separated by a sheet of parallel planes. The two positive lenses are in fact correct in terms of spherical aberration, while the parallel planes are over-corrected and, overall, is therefore guaranteed a compensating effect. Starting from the radius R of the sphere, and considering n as its index of refraction, the focal length of a ball lens is simply given by f = R*n/2(n-1).

These lenses are essentially optical components used to improve signal coupling between optical fibers, detectors and emitters. Ball lenses are also used in endoscopy, scanning systems, as pre-form samples of spherical lenses and globally with sensors.

Tecnottica makes available to its customers a wide range of ball lenses with different radii, to meet our customers most various needs and applications.

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