Abstract

Defines a family of rotationally symmetrical segmented reflectors, fully corrected for spherical aberration. The discontinuous meridian curve of each reflector consists of elementary mirrors parallel to the tangent of an axisymmetric curve (called the generating curve) at the point located at the same distance from the common axis. The author studies the third order aberration patterns of reflectors for which the generating curve is a circular segment. This leads to the definition of easily built stepped spherical collectors of large aperture and narrow field angle which can be used as high concentration solar collectors.

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