Re: ronchi grating
> I currently use a Ronchi grating I made by using a WORD textbox withfill
> effect pattern consisting of vertical lines which I printed on alines/mm.
> transparency using a HP LaserJet 1100 which gives me about 3-4
This would give you 75 to 100 lines per inch. A 100 lpi will work ok,
but 75 lpi is a little slim. I also printed my grating using
transparency film on an HP Photosmart printer.
The grating I printed was a 100 line per inch and does work. I got a
pic of the grating off the web. Then I scaled it, adjusted the contras
and lighted it. I also had to crank up the printers setting to print
Question. Does your transparency flim have a rough surface? Mine did.
I got Staples brand because it was cheaper.
If you want a link to the grating pic let me know.