Jordan Edmunds's video: Lens Aperture Function Explained

https://www.patreon.com/edmundsj If you want to see more of these videos, or would like to say thanks for this one, the best way you can do that is by becoming a patron - see the link above :). And a huge thank you to all my existing patrons - you make these videos possible. In this video I go over the lens aperture function (also known as a phase mask). Lenses essentially apply a quadratic phase to the wavefront, which allows for cancellation of the quadratic phase due to free-space propagation. This is what enables lenses to perform Fourier Transforms. This is part of my graduate series on optoelectronics / photonics, and is based primarily on Coldren's book on Lasers as well as graduate-level coursework I have taken in the EECS department at UC Berkeley. Hope you found this video helpful, please post in the comments below anything I can do to improve future videos, or suggestions you have for future videos.