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Proceedings Paper

Optical spherometer for measuring large curvature radii of convex surfaces
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Paper Abstract

Measuring large curvature radii of convex surfaces with high precision is a challenge because the spherometer’s focus must be positioned at the apex of the surface and at the center of curvature of the surface by moving the surface or the spherometer. If the radius of curvature is larger than the back focus of spherometer, then measurement is not possible. In this work, we propose to use the FOCOIVA system1 to move the focus of the spherometer in longitudinal way without modifying the f number by moving two lenses inside it, with this mechanism it is possible to measure radii of curvature of several meters in length. The curves of movement of the lenses and the optical parameters of the lenses that compose the spherometer are presented.

Paper Details

Date Published: 23 August 2017
PDF: 11 pages
Proc. SPIE 10375, Current Developments in Lens Design and Optical Engineering XVIII, 1037515 (23 August 2017); doi: 10.1117/12.2274323
Show Author Affiliations
Jorge de Jesús Alvarado Martínez, Univ. Politécnica de Tulancingo (Mexico)
Sergio Vázquez y Montiel, Univ. Interserrana del Estado de Puebla (Mexico)
Cesar Joel Camacho Bello, Univ. Politécnica de Tulancingo (Mexico)

Published in SPIE Proceedings Vol. 10375:
Current Developments in Lens Design and Optical Engineering XVIII
R. Barry Johnson; Virendra N. Mahajan; Simon Thibault, Editor(s)

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