Telephoto Prime Lens Design: A Patent Study

This fourth patent study in devoted exclusively to one patent, both because of the detailed review I wanted to do, and because it is such a good patent with good embodiments. Some topics covered in this video that I haven't touched on before include stray light analysis, wave front error, and depth of field. Please consider clicking on "LIKE". I don't get paid for creating this content, and your positive feedback is the only encouragement that I receive to continue creating this kind of helpful material. My other patent studies are in this playlist:    • Optics and Optical Design   It was a race against time to finish the simulations with my OpticStudio license set to expire, and expire it did before I was completely finished. But that proved to be only a minor concern as I got pretty much everything I needed. I just didn't get to finish optimizing. OpticStudio is a product of Zemax (www.zemax.com). References: 1. The patent in this study is US patent number 3,942,876 "Telephoto Lens". The inventor is a luminary in the field, which explains the quality of the invention. 2. Pedrotti, Pedrotti, and Pedrotti, Intro to Optics, 3rd ed. p. 73. 3. Greivenkamp, Field Guide to Geometrical Optics, p. 35. 4. Keith J. Kasunic, Optical Systems Engineering, (McGraw-Hill, 2011), p. 118. Photo Credits: 1. Danielteolijr, CC BY-SA 4.0 https://creativecommons.org/licenses/..., via Wikimedia Commons 2. https://wiki.panotools.org/File:Pincu... GNU Free Documentation License 1.2 3. NightWolf1223, CC BY-SA 4.0 https://creativecommons.org/licenses/..., via Wikimedia Commons 4. NightWolf1223, CC BY-SA 4.0 https://creativecommons.org/licenses/..., via Wikimedia Commons I don't ask for support for developing this content. There is no sponsor. No Patreon. I don't make viewers sit through ads (although YouTube does). So, please click "Like" whenever appropriate. It's difficult to measure the success of this channel. My only metric of success is that the videos help people to do what they do better. How do you measure that? The only signal for success comes from your "Like". Optical Design Playlist:    • Optics and Optical Design   #lensdesign #opticaldesign