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PUSHING THE ENVELOPE IN OPTICAL DESIGN SOFTWARE

Conformal dome correction with counterrotating phase plates

[+] Author Affiliations
Scott W. Sparrold, James P. Mills, David J. Knapp, Kenneth S. Ellis, Thomas A. Mitchell, Paul K. Manhart

Raytheon Systems Company, P.O. Box 11337, Bldg. 840, M/S 4, Tucson, Arizona?85734-1337

Opt. Eng. 39(7), 1822-1829 (Jul 01, 2000). doi:10.1117/1.602564
History: Received Oct. 5, 1999; Revised Feb. 7, 2000; Accepted Feb. 8, 2000
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Abstract

Windows and domes that are shaped to aerodynamic requirements can increase range and speed for the host platform. This class of optical systems is referred to as conformal optics. The solution discussed here is intended for conformal missile systems having gimbals that point the optical line of sight through different parts of the dome. A conformal dome induces large amounts of varying aberration, tens to hundreds of waves across gimbal angle, and therefore requires dynamic correction. Space is very constricted in missile sensors, and it is therefore highly desirable to limit the number of motors used for aberration correction. This paper describes the performance of a new class of optical systems that employ counterrotating phase prisms to correct conformal dome aberrations while gimbaling the optical system. The phase surfaces on the prisms are described by Zernike circular polynomials. Since the shear across the phase surfaces is rotational, the only aberrations that are generated are those without rotational symmetry, such as tilt, coma, or astigmatism. Using this approach, CODE V® was used to analyze and design a compact, high-performance conformal optical system. © 2000 Society of Photo-Optical Instrumentation Engineers.

© 2000 Society of Photo-Optical Instrumentation Engineers

Topics

Domes

Citation

Scott W. Sparrold ; James P. Mills ; David J. Knapp ; Kenneth S. Ellis ; Thomas A. Mitchell, et al.
"Conformal dome correction with counterrotating phase plates", Opt. Eng. 39(7), 1822-1829 (Jul 01, 2000). ; http://dx.doi.org/10.1117/1.602564


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