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<a accesskey="3" href="page.php?w=Fraunhofer_diffraction&amp;p=2">3.Next</a>
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<p>In <a href="page.php?w=optics">optics</a>, the <b>Fraunhofer diffraction</b> equation is used to model the <a href="page.php?w=diffraction">diffraction</a> of waves when plane waves are incident on a diffracting object, and the diffraction pattern is viewed at a sufficiently long distance (a distance satisfying the <a href="page.php?w=Fraunhofer_diffraction">Fraunhofer condition</a>) from the object (in the far-field region), and also when it is viewed at the <a href="page.php?w=focal_plane">focal plane</a> of an imaging <a href="page.php?w=Lens_%28optics%29">lens</a>.</p><p>
<a accesskey="3" href="page.php?w=Fraunhofer_diffraction&amp;p=2">3.Next</a>
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