Mustafa Umut Sarac Posted March 3, 2022 Share #1 Posted March 3, 2022 Advertisement (gone after registration) George Washington Morey 1939 USA !! , Inventor of Thorium , Lanthanide Glass and German Glass after him. Any detailed information on all of the subject ? Quote Link to post Share on other sites More sharing options...
Advertisement Posted March 3, 2022 Posted March 3, 2022 Hi Mustafa Umut Sarac, Take a look here George Washington Morey 1939 USA !! , Inventor of Thorium , Lanthanide Glass and German Glass after him. I'm sure you'll find what you were looking for!
romanus53 Posted March 3, 2022 Share #2 Posted March 3, 2022 US2150694A patent Quote Link to post Share on other sites More sharing options...
Mustafa Umut Sarac Posted March 3, 2022 Author Share #3 Posted March 3, 2022 22 minutes ago, romanus53 said: US2150694A patent Is there any american , british ww2 report or a book or series of articles or leitz or schott report on how to manufacture and engineer thorium glass ? us invented the glass at 1939 march and within one year summitar was a thoriated glass. Who were the german engineers succeeded this ? I read the patent but its very broad , non specific to summitar . Quote Link to post Share on other sites More sharing options...
romanus53 Posted March 3, 2022 Share #4 Posted March 3, 2022 Hi Mustafa, afaik the CIOS and BIOS reports on Leitz, Zeiss or Schott did not mention any use of Thorium or other rare earth material in Germany. Leitz used such glass on the Summicron and the glass was supplied by Chance Bros. from England, later the used Schott LaK9. Edward Kaprelian https://opg.optica.org/josa/abstract.cfm?uri=josa-37-6-466 did not metion such lenses but aspherical lenses explored by Zeiss. Marco Cavina http://www.marcocavina.com/articoli_tecnici_fotografici.htm has published on Leitz lenses online. 1 Quote Link to post Share on other sites More sharing options...
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