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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 33, Iss. 32 — Nov. 10, 1994
  • pp: 7611–7616

Strehl ratio versus defocus for noncentrally obscured pupils

J. Ojeda-Castañeda, M. Martínez-Corral, P. Andrés, and A. Pons  »View Author Affiliations


Applied Optics, Vol. 33, Issue 32, pp. 7611-7616 (1994)
http://dx.doi.org/10.1364/AO.33.007611


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Abstract

We discuss from the viewpoint of the Strehl ratio versus defocus, or the normalized axial-irradiance distribution, the influence of decentering the dark mask of an annular pupil. Our treatment, which is valid for pupil apertures with any Fresnel number, permits us to infer that the axial behavior of a noncentrally obscured pupil is equivalent to that of an apodizer with continuous amplitude variations. Hence the Strehl ratio versus defocus of an optical system can be shaped by use of noncentered dark masks that act as continuous gray apodizers. Several numerically evaluated examples are presented.

© 1994 Optical Society of America

History
Original Manuscript: January 25, 1994
Revised Manuscript: June 16, 1994
Published: November 10, 1994

Citation
J. Ojeda-Castañeda, M. Martínez-Corral, P. Andrés, and A. Pons, "Strehl ratio versus defocus for noncentrally obscured pupils," Appl. Opt. 33, 7611-7616 (1994)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-33-32-7611

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