Archived posting to the Leica Users Group, 2001/05/12
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]At 11:12 PM 5/11/2001 -0700, Dennis Painter wrote: >Do you know when Leitz began selling lenses using vacuum coating? > The Zeiss patent expired in 1958, I believe, so that year probably marked the beginning of Leitz' using hard-coating methods. The process is not technically difficult. A number of small shops sprang up after the end of the Second World War in the US and UK which offered to hard-coat lenses, as the Zeiss patents were government property in those nations. And, by 1960, Leitz would recoat a lens with the vacuum-coating technique, a service offered into the 1980's. Marc msmall@roanoke.infi.net FAX: +540/343-7315 Cha robh bas fir gun ghras fir!