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Revista mexicana de física

versión impresa ISSN 0035-001X

Resumen

CARMONA-PAREDES, L.  y  DIAZ-URIBE, R.. Geometric analysis of the null screens used for testing convex optical surfaces. Rev. mex. fis. [online]. 2007, vol.53, n.5, pp.421-430. ISSN 0035-001X.

A geometric analysis of the screens used for testing convex optical surfaces is presented. Some properties of the transformation between the image plane and the screen plane, such as symmetry and magnification, are presented for the case when the reflecting surface is a sphere. Due to the intrinsic variations in the magnification, the geometric relationship between the image and the object shows some unexpected behavior. Two cases are analyzed in detail: i) a set of concentric circles centered on the origin of coordinates of the image plane with a set of radial straight lines; and ii) a square grid and a square array of circles of the same size.

Palabras llave : Null screens; convex optical surfaces; testing of optical surfaces.

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