We've been asked about the feasibility of setting up a couple of projectors for use outdoors for an assembly and I wondered if anyone had any experience or information about it.
To give you a little background, at the end of every term, we do a whole school assembly where prizes are given out, the band plays some songs and the dance class performs something or other. A big part is 2 large projected images on the wall in our games hall where we show photos of events from the term and pick bingo prizes from a scrolling list of names of students(number of entries based upon the praise points students gained in the term).
Some bright spark commented to the principal how wonderful it would be to have all this outdoors (depending on the weather). I've given my opinion that the image will simply not be visible outside as our brightest projector is 2200 lumens. Does anyone know how bright a projector would be required for outside use? Obviously it depends on quite how bright the ambient light is, so I'd say fairly bright as if it was dull day chances are we'd go back to our games hall.
I wouldn't bother. We have a couple of break-out areas indoors at my school where projectors were installed. There are tinted glass skylights overhead and on a normal school day they are almost unuseable.
Also, I did some work with another school a year or so ago where they have an auditorium with a glass roof; they asked for a projector in there, their AV supplier advised against it but they insisted. They put the most powerful projector they could find (it cost them £20k) and it was still almost useless on a bright day. You have no chance against a 6840000000000000000000000000 lumens light source!
Heavens no. You won't see anything unless it's a particularly dark and cloudy day, and if it's a particularly dark and cloudy day you probably don't want expensive electronics outside. Covering a projector with a tarp is a bad idea given the heat output as well.
you need monster projectors to work outside. What you need is these guys... Fonix LED :: Mobile but they don't come cheap. I would tell the powers that be that unless they have thousands to throw at it, to can it, it won't work.