The fourth of four reviews of geometrical optics. Covered here is (1) Chromatic effects and chromatic aberration, (2) Seidel aberrations, and (3) optimizing optical designs with achromats, aspherics, and lens splitting. I'm focusing on the concepts in this treatment, rather than the mathematics. Third order ray optics is notorious for being conceptually challenging, and the math would take a lot more than 25 minutes to cover, even with my fast speaking style.
I didn't plan it this way, but it turns out that these four videos add up to exactly 100 minutes and 0 seconds of geometrical optics!
Each review video covers progressively more complex topics than the previous review.
The contents of the four reviews:
Year 1: Refracting surfaces, thin lenses, two thin lens problems, spherical mirrors. ua-cam.com/video/5wft2YvgyIA/v-deo.html
Year 2: Optical materials, Optical fibers, Fermat's principle, Gullstrand's equation, Principal planes, Numerical aperture, Telescopes ua-cam.com/video/1s4kJYZsI9w/v-deo.html
Year 3: First order optics: Prisms, stops, pupils, windows, ray tracing, matrix methods. ua-cam.com/video/UgjOsUgAN0M/v-deo.html
Year 4: Third order optics: Aberrations, Aspherics
Some parts of this video were snipped from the lecture videos I will use in courses that I am preparing to teach at UC Irvine Division of Continuing Education. Here is the link if you are interested in the full 10-week Geometrical and Physical Optics course, or other remotely-taught courses in optical engineering: ce.uci.edu/programs/engineering/optical-engineering
Here's is a very clear, yet simple, demonstration of spherical aberration: ua-cam.com/users/shortswiSo9beCKz4
Here's is my optics and optical design playlist:
ua-cam.com/play/PLmfHzApbF5dbx_S_h9A13uLm4LVK0f6XK.html