Variable focus machine vision lens without moving parts: freeform progressive eyeglasses for non-humans

These are slides created for the OSA Imaging and Applied Optics Congress for an online presentation on June 25th, 2020, 3:30 pm - 3:45 pm, Pacific Daylight Time (session title: Imaging and Display Optics I).

NOTES:

(1) This is an extension of the work done at the following link: https://dx.doi.org/10.6084/m9.figshare.5786733

(2) Rev. 4 is the latest.

(3) Previous revisions: Rev. 1 was the very first draft, with less slides. Rev. 2 had more slides, but some typographical errors. Rev. 3 had extra slides and did not have a note about the asymmetry of the term Ayx^2.

(4) The equation for surface sag uses the additional term "Ayx^2", which corrects astigmatism by controlling focus for sagittal rays BUT ONLY FOR THE +y DIRECTION of the aperture stop. For the -y direction, the coefficient A must change sign to negative in some smooth fashion.

(5) An OSA Proceedings paper is published at: https://doi.org/10.1364/ISA.2020.ITh4E.4