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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 40, Iss. 5 — May. 1, 1950
  • pp: 283–285

A New Series of Microscope Objectives. III. Ultraviolet Objectives of Intermediate Numerical Aperture

DAVID S. GREY  »View Author Affiliations

JOSA, Vol. 40, Issue 5, pp. 283-285 (1950)

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Paper II of this series demonstrates that spherical lens elements combined with spherical mirrors may provide well-corrected and achromatized ultraviolet microscope objectives. The present paper presents a further study of several types of catadioptric Schwarzschild systems which provide microscope objectives relatively easy to construct, convenient to use, and for which ultraviolet and visual range performance characteristics are not compromised. Several modifications with numerical apertures within the range 0.4 to 1.0 are presented.

DAVID S. GREY, "A New Series of Microscope Objectives. III. Ultraviolet Objectives of Intermediate Numerical Aperture," J. Opt. Soc. Am. 40, 283-285 (1950)

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  1. D. S. Grey and P. H. Lee, J. Opt. Soc. Am. 39, 719 (1949).
  2. D. S. Grey, J. Opt. Soc. Am. 39, 723 (1949).
  3. The Schwarzschild objectives reported by Burch are based on aspheric mirrors. C. R. Burch, Proc. Phys. Soc. London 59, 41 (1947).
  4. The objectives used by Brumberg provide a weak lens between the convex mirror and the long conjugate focus. The only apparent function of this lens is to correct chromatic aberration introduced by the cover slip. E. M. Brumberg, Nature (London) 152, 357 (1943).
  5. For a discussion of glycerin-sugar-water mixtures for immersion liquids, see L. C. Martin and B. K. Johnson, J. Sci. Inst. 5, 380 (1928).

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