[Author Prev][Author Next][Thread Prev][Thread Next][Author Index][Thread Index]

Re: [ATM] A Null Test

Richard F.L.R. Snashall wrote:
> With three BK7/N-BK7 lenses (deriving from Richard's Offner test):
>
>         a) CVI PLCX-38.1-51.5-C    38.1 mm diameter 100 mm f.l. planoconvex
>         b) Optosigma  015-0475     30.0 mm diameter -170 mm f.l. 
> planoconcave
>         c) 25-25.4 mm diameter variable f.l. (c. 100 to 200 mm) biconvex
Some tabular values:

    http://users.rcn.com/rflrs/OffnerDesign.htm

In this sparcity of data, I think it's at a stage where the
separations are quite noisy.  It does, though, provide some
confidence the design can extend over a useful set of values.
_______________________________________________
ATM mailing list http://www.atmlist.net/