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Aspheres in the Home…Another Reference

Here is another reference that supports the information at this link:

http://optics.perluma.com/aspheres-in-the-home

which might give a better explanation of the optical technique; see pg. 54 here:

https://worldradiohistory.com/Archive-Radio-News/40s/Radio-News-1947-09-R.pdf

V. K. Zworykin, “Reflective Optical System for Projection Television,” p. 54, Radio News, September 1947.