Abstract
Diffraction by fly facet lenses has been investigated by photographing the diffraction patterns at various distances from a facet lens whose power was estimated to be 2.03 x 10(4) D. We studied three different aperture diameters with Fresnel numbers of the order of unity. A large focal shift was prominent at the lower Fresnel number. The measured diffraction patterns correspond to those calculated with the Kirchhoff diffraction theory for an aberration-free lens with low Fresnel numbers.
Original language | English |
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Pages (from-to) | 14-19 |
Number of pages | 6 |
Journal | Journal of the Optical Society of America A |
Volume | 8 |
Issue number | 1 |
DOIs | |
Publication status | Published - Jan-1991 |