Abstract

A method of balancing the optical aberrations over a wide angular field of a Schmidt optical system is described. This design method is demonstrated for a Schmidt optical system of focal ratio F:0.7 and covering an angular field of 40°. The reduction in off-axis secondary aberrations is obtained by computing a “wide angle” aspheric corrector plate through the use of “Lucy’s Approximate Method” instead of using the conventional “exact equations.”

© 1950 Optical Society of America

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Figures (7)

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Equations (3)

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