An Improved Type of Schmidt Camera

Abstract

As has been mentioned in Nature1, D. D. Maksutov has shown that the aspheric plate of an f/2.5 or f/3 Schmidt camera of aperture2 not exceeding two or three feet can be replaced by a simple meniscus lens, the spherical surfaces of which are nearly concentric with the mirror surface. Maksutov pointed out that a system with a strictly concentric meniscus is feasible provided that a certain amount of primary chromatism can be tolerated, and that such a system has the valuable property of giving uniform definition throughout its curved field.

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References

  1. 1

    Nature, 155, 798 (1945).

  2. 2

    Maksutov, D. D., J. Opt. Soc. Amer., 34, 270 (1944). Mention should also be made of a system by D. Gabor (Brit. Pat. 544,694; 1940), based on the same idea and employing an annular aperture.

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HAWKINS, D., LINFOOT, E. An Improved Type of Schmidt Camera. Nature 157, 445–446 (1946). https://doi.org/10.1038/157445b0

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