Archived posting to the Leica Users Group, 2008/04/25
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Clive, Many thanks for providing this link. I can see a number of parallels in the application of computers to lens design, as expressed in this paper, and the similar application to fluid flows and supersonic aerodynamics. In one case light rays are being traced, in the other the lines represent compression and expansion paths in fluid systems. One of my sons is heavily involved in what is today known a Computational Fluid Dynamics (CFD), where the process is applied to a wide range of engineering problems. Jim Nichols Tullahoma, TN USA ----- Original Message ----- From: "Clive Moss" <clive.moss@gmail.com> To: "Leica Users Group" <lug@leica-users.org> Sent: Friday, April 25, 2008 10:32 AM Subject: Re: [Leica] noctilux factoid of the day > As a certified Old fart (I started programming in 1962) I remembered > vaguely a special purpose software language targeted at building lens > design software being used on an IBM 1130. This was when there was > still some debate regarding programming languages being totally > generic (like C) vs domain specific (like FORTRAN and COBOL). I hit > Google for it and could not find it, but this interesting on lens > design showed up: > > http://www.optics.rochester.edu/~stroud/BookHTML/ChapIII_pdf/III_18.pdf > > > > On Fri, Apr 25, 2008 at 9:48 AM, wildlightphoto@earthlink.net > <wildlightphoto@earthlink.net> wrote: >> Jim Nichols <jhnichols@bellsouth.net> wrote: >> >> > Surely the Leica optical guys had access to >> > this same technology for precise computations. >> >> IIRC Leitz and in particular Leitz Canada was among the first if not the >> first to use computers in lens design. I'm relying on memory here but I >> believe that Leitz started using electronic computing devices (by >> whatever >> name) in the 1950s. >> >> Doug Herr >> Birdman of Sacramento >> http://www.wildlightphoto.com >> >> -------------------------------------------------------------------- >> myhosting.com - Premium Microsoft(R) Windows(R) and Linux web and >> application >> hosting - http://link.myhosting.com/myhosting >> >> >> >> >> >> >> _______________________________________________ >> Leica Users Group. >> See http://leica-users.org/mailman/listinfo/lug for more information >> > > > > -- > Clive > http://clive.moss.net/blog/ > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information >