John Honniball wrote:
I got the filter material
from Maplin's, who are still in business, but I don't think they still
sell it.
They stopped selling it ages ago, but Farnell still stock it:
http://uk.farnell.com/178186/optoelectronics/product.us0?sku=visualux-2711x…
A bit on the expensive side for what it is, but it does the job. I've been
using it with HP HDSP-2112 (green) 5x7 LED displays.
--
Phil.
classiccmp at philpem.me.uk
http://www.philpem.me.uk/