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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 39, Iss. 16 — Jun. 1, 2000
  • pp: 2683–2686

Improved design for stray-light reduction with a hemispherical imager

Andrew Buffington  »View Author Affiliations


Applied Optics, Vol. 39, Issue 16, pp. 2683-2686 (2000)
http://dx.doi.org/10.1364/AO.39.002683


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Abstract

We present a significant design improvement over previous visible-light stray-background-reducing baffles suitable for use on a stabilized deep-space platform. In earlier research we showed that when background-light sources are confined to a hemisphere or less, a conventional labyrinth baffle can be replaced by an array of concentric vanes, oriented away from the desired field of view. This configuration delivers substantial savings in size and weight. The present improvement replaces the concentric vanes by a smooth curved surface. This permits simplified fabrication and handling, provides even more weight reduction, and delivers improved performance for a given size. Laboratory measurements confirm stray-light performance with ∼10-14 rejection viewing as close as 3° to a bright-light source.

© 2000 Optical Society of America

OCIS Codes
(120.4570) Instrumentation, measurement, and metrology : Optical design of instruments
(350.6090) Other areas of optics : Space optics

History
Original Manuscript: September 27, 1999
Revised Manuscript: February 16, 2000
Published: June 1, 2000

Citation
Andrew Buffington, "Improved design for stray-light reduction with a hemispherical imager," Appl. Opt. 39, 2683-2686 (2000)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-39-16-2683


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References

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  2. A. Buffington, “Very-wide-angle optical systems suitable for spaceborne photometric measurements,” Appl. Opt. 37, 4284–4293 (1998). [CrossRef]
  3. A. Buffington, P. P. Hick, B. V. Jackson, C. M. Korendyke, “Corrals, hubcaps, and crystal balls: some new designs for very-wide-angle visible-light heliospheric imagers,” in Missions to the Sun II, C. M. Korendyke, ed., Proc. SPIE3442, 77–86 (1998). [CrossRef]
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  10. S. Koutchmy, “Space-borne coronagraphy,” Space Sci. Rev. 47, 95–143 (1988). [CrossRef]
  11. A. Buffington, P. P. Hick, B. V. Jackson, “Visible-light all-sky imagers in deep space,” Bull. Am. Astron. Soc. 31, 959 (1999).
  12. B. V. Jackson, A. Buffington, P. P. Hick, S. W. Kahler, M. Kojima, R. R. Radick, An All-Sky Heliospheric Imager System for the STEREO Spacecraft, in (Center for Astrophysics and Space Sciences, University of California, San Diego, La Jolla, Calif., 1999).

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