Patents related to photo lenses

Started 6 months ago | Discussions thread
OP Dibyendu Majumdar Contributing Member • Posts: 761
The famous Noctilux 50mm f1.2

This was world's first 35mm lens with aspherical elements - two of them!

https://patents.google.com/patent/US3459468A/en

Also see:

https://www.pacificrimcamera.com/rl/00307/00307.pdf

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