Hi Struan,
Please can you share with me some commercial photomask suppliers?
I already have the design files, provided by Bertho Boman. And also I have access to CAD tools and can create custom targets (for 5" squares).
I am living in Taiwan. Six months ago I found a photomask house that asked $150 for a 5". But resolution was very limited (10 microns) so I didn't ordered. (10 microns is only around 50 LPPM).
I know of commercial USAF 1951 charts in glass (2"x2") at $120 USD with high resolution 228 lppm. But I'd would like to make some 5"x5" target to test some LF lenses at 1:1.
Bookmarks