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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 41, Iss. 3 — Mar. 1, 1951
  • pp: 183–192

Computed Aberrations of Spherical Schwarzschild Reflecting Microscope Objectives

DAVID S. GREY  »View Author Affiliations


JOSA, Vol. 41, Issue 3, pp. 183-192 (1951)
http://dx.doi.org/10.1364/JOSA.41.000183


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Abstract

A microscope objective with (small) central obstruction of aperture and small wave-front deformation has a loss of amplitude at the center of the Airy disk which may be expressed in terms of losses due to spherical aberration, coma, and central obstruction. These losses are essentially independent; the net loss is the sum of the separate losses. Data are presented from which these losses for Schwarzschild spherical mirror systems of high initial magnification may be computed. It is shown that for visible or ultraviolet light and for numerical apertures greater than about 0.5, the net loss of central amplitude becomes excessive unless the object field is restricted to an extraordinarily small diameter. The numerical aperture at which such restriction of the field is necessary may be increased if the initial magnification is made small, e.g., about 8×, as is possible and convenient for infrared microspectroscopy.

Citation
DAVID S. GREY, "Computed Aberrations of Spherical Schwarzschild Reflecting Microscope Objectives," J. Opt. Soc. Am. 41, 183-192 (1951)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-41-3-183


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References

  1. A. E. Conrady, Applied Optics and Optical Design (Oxford University Press, London, 1929).
  2. D. S. Grey, J. Opt. Soc. Am. 40, 283 (1950), Fig. 11.
  3. See reference 2, especially Fig. 4, which shows such an objective adapted for immersion use.
  4. Norris, Seeds, and Wilkins, J. Opt. Soc. Am. 41, 111 (1951).
  5. R. Kingslake, Proc. Phys. Soc. (London) 61, 147 (1948).
  6. Blout, Bird, and Grey, J. Opt. Soc. Am. 40, 304 (1950).
  7. D. S. Grey, U. S. Pat. 2,520,634.

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