In normal ambient daylight here in England (alright so it's dark most of the time) the display is perfectly bright to see easily. However when the sun is low (which it is most of the time at the moment) and it is shining directly into the Empeg display the flourescent elements inside the VFD appear to reflect this light back out and therefore reduce their contrast with the elements which are emmiting light.
As light which is reflected is quite often polarised (but not always) I thought that this might be a cure. Anyone got any ideas, experience or comments on this idea?
It's not a great problem at the moment as the sun isn't out for long enough. I'm thinking ahead to the summer when the sun will be out for more than 10 seconds (ha ha!!) in any 24 hr period.

beaker
12 gig blue