Differences between hard and soft apertures in optical systems

Mojtaba Mansour Abadi @Mojtaba-Mansour-Abadi

20 May 2013 1 5K Report

In the literature, I have seen the terms "hard aperture" and "soft aperture" in various optical systems. I could not find any definition or any physical example to understand these items. Could you please help me with the definitions and general concepts of hard and soft apertures? If possible please give a physical example of these apertures. Thank you in advance.

Mojtaba Mansour Abadi

Thanks Marc Ferlet,

I am sorry I forgot to mention that what I asked is about the optical systems and I think what you explained applies to electromagnetics. Could you please let me know if the above definition is correct for optical systems too?

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