Spiral conical approximations to double reflection Wolter optics

Marco Barbera; Teresa Mineo; Emanuele Perinati; Herbert W. Schnopper; Daniele Spiga; Angelo Taibi

doi:10.1117/12.790963

15 July 2008 Spiral conical approximations to double reflection Wolter optics

Marco Barbera, Teresa Mineo, Emanuele Perinati, Herbert W. Schnopper, Daniele Spiga, Angelo Taibi

Proceedings Volume 7011, Space Telescopes and Instrumentation 2008: Ultraviolet to Gamma Ray; 701136 (2008) https://doi.org/10.1117/12.790963
Event: SPIE Astronomical Telescopes + Instrumentation, 2008, Marseille, France

Abstract

The design of a grazing incidence focusing optic obtained from a spiral approximation to multiple nested cones produces an annular image of a point source. The angular size of the annulus depends mainly on the pitch of the winding and the focal length. For a spiral conical approximation to Wolter optics, the effect is magnified by the double reflection. However, if the two conical spirals are wound one clock-wise and the other counter-clock-wise, then the aberration is partially compensated. We use a ray tracing code to evaluate advantages and disadvantages of this optical design for potential applications of a light weight optics technology based on plastic foils that we are currently investigating.

Citation Download Citation

Marco Barbera, Teresa Mineo, Emanuele Perinati, Herbert W. Schnopper, Daniele Spiga, and Angelo Taibi "Spiral conical approximations to double reflection Wolter optics", Proc. SPIE 7011, Space Telescopes and Instrumentation 2008: Ultraviolet to Gamma Ray, 701136 (15 July 2008); https://doi.org/10.1117/12.790963

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