Diffractive optics applied to eyepiece design

Details Diffractive optics applied to eyepiece design Diffractive optics applied to eyepiece design

May 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995apopt..34.2452m&link_type=abstract

Applied Optics IP, vol. 34, Issue 14, p.2452

Physics

Optics

15

Diffractive Optics

Scientific paper

Eyepieces often limit the overall optical performance of visual instruments and, because of the wide field-of-view and high-performance requirements, they present a well-known difficult design problem. Improvement of existing eyepieces is limited with the use of conventional design variables. We have designed and fabricated a hybrid diffractive-refractive wide-field ( greater than 60 deg) eyepiece that offers significant improvements over existing conventional eyepieces. The hybrid eyepiece consists of only three common-crown refractive elements and weighs 70% less than an Erfle-type eyepiece, while having enhanced optical performance such as a 50% decrease in pupil spherical aberration and a 25% reduction in distortion. Experimental modulation transfer function results are in excellent agreement with the theoretical performance.

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