Translator Disclaimer
Paper
23 August 2017 Optical spherometer for measuring large curvature radii of convex surfaces
Author Affiliations +
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.
© (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jorge de Jesús Alvarado Martínez, Sergio Vázquez y Montiel, and Cesar Joel Camacho Bello "Optical spherometer for measuring large curvature radii of convex surfaces", Proc. SPIE 10375, Current Developments in Lens Design and Optical Engineering XVIII, 1037515 (23 August 2017); https://doi.org/10.1117/12.2274323
PROCEEDINGS
11 PAGES


SHARE
Advertisement
Advertisement
RELATED CONTENT

Theory of two-component zoom systems
Proceedings of SPIE (December 01 1991)
Cone array of Fourier lenses for contouring applications
Proceedings of SPIE (December 01 1991)
Matrix optical system for plane-point correlation
Proceedings of SPIE (December 01 1991)

Back to Top