Archived posting to the Leica Users Group, 2001/01/19
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Dan, In the race to get the new Apo Asphs to the market place I understand that they were at first made with ground elements using optical units supplied by the old Leitz factory in Midland Ontario. Now Hughes Corporation(?) I also understood that the plan was to shift all production to Solms (where they mould aspheric elements) as soon as possible. I'm presuming that the transition has already occurred as this was talked about two years or so ago. Jem - -----Original Message----- From: Dan Cardish [SMTP:dcardish@sympatico.ca] I thought for certain that the newer ASPH lenses such as the APO 90 involve machine grinding (in addition to molding) in their construction. dan c. At 09:54 AM 19-01-01 -0000, Jem Kime wrote: >Dan, >The first ones were ground by machines, the present ones moulded. >Jem