George Washington Morey 1939 USA !! , Inventor of Thorium , Lanthanide Glass and German Glass after him

[Mustafa Umut Sarac]

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George Washington Morey 1939 USA !! , Inventor of Thorium , Lanthanide Glass and German Glass after him. Any detailed information on all of the subject ?

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[romanus53]

US2150694A patent

[Mustafa Umut Sarac]

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 .

 

[romanus53]

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.