lens with "float glass" process ?

[nbucska]

A small glass pellet of measured size melts on a tin (?)
bath and contracts. A large pellet gives a slightly
rounded disc, a small one a flattened sphere -- between
the two extremes there must be a combination of size, temperature, gravity etc. which gives a lens which is closest to the optically perfect one.

How to determine these data ? any use for cheap mass-produced lenses ?

<nbucska@pcperipherals DOT com> subj: eng-tips
read FAQ240-1032

 

[IRstuff]

There are already cheap molded plastic lenses available. These will be cheaper than any glass lens you could make.

TTFN

 

[cev]

I am familiar with a company that uses a similar approach to make plastic lens arrays.

CV