Abstract

Aperture modulation effects have been investigated in a Korean binocular objective lens in isolation from the rest of the system. The off-axis aberrations are derived from the design data. The MTFs are measured for the same modulated aperture and compared by the same method, in the presence of off-axis aberrations, as the rotationally symmetric aberrations presented in the previous paper [ Appl. Opt. 22, 1812 ( 1983)]. The MTF of the lens was found to be improved by proper aperture modulation.

© 1987 Optical Society of America

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