Originally Posted by Clay Manship
Really appreciate your thorough reply!
I think I am aiming for a "permanent" outdoor setup. That is...I want to have a motorized 144" screen on my garage, that can move up and down with the flip of a switch. With this in mind, I would feel most comfortable having my projector affixed to the house for security purposes. This would mean that my projector would be throwing approximately 55 feet...
1. Assuming I purchased the Epson projector above...what would this do to my picture? Is this feasible?
2. Can a projector cast through glass? This would allow me to leave the projector indoors (a lot more attractive to me!)
I think I am going to be stuck on a projector casting from 55-60 feet, regardless of cost/utilities...it's the only way that I can come up with to accomplish goals. With that in mind...what would you recommend to me?
As an FYI, motorized screens come with their own set of problems. They have a propensity to not lay flat, that is, they can get some "waves" in them that are difficult and sometimes impossible to get out. Most screens are made from some kind of vinyl. As such they are going to be subject to temperature extremes. Rolled up in the sun may cause some warping and extreme cold could cause it to crack. Then you're also going to have to put up with bugs or birds that decide to nest inside the roll housing. The bigger problem is any moisture on the screen surface can and will propagate mold/mildew growth while the screen is rolled up sitting in the sunshine.
You're still somewhat at odds with the screen size and throw distance.
After digging a little, it looks like you can buy that projector with or purchase a special lens to retrofit that would allow for a 144" image at a 55' throw distance. The specific lens for that exact projector is the Epson Epson ELP LM11. It should produce a 144" image with the projector placed any where between 49.5' and 75.3'. The lens by itself has an MSRP price of ~$2500.00. You should be able to buy it at street price with a 20-50% discount.
Are you planing on keeping the projector indoors and projecting through a window? Or are you wanting a box outside attached to the house? I guess the point is that there are outdoor projector enclosures/housings that are purposed built that have temperature control for this type of application.
Yes, you can project through glass. What's in a typical hose window is usually not the best stuff though. You want an optical quality glass that minimizes spherical aberration, color aberration, etc. Edmunds Optics carries what you want or google projector port glass.
If you're only using a 144" screen, you may want to revisit the ultra short throw units. Something like the Viewsonic LS830 will do 144". It could be mounted on your garage, over the screen in a housing that look like this:
Anyhow, a couple of things to think about.