I just bought a Sharp Qa-1800 off of ebay yesterday and I am waiting to get it. I got an idea about a light design for the overhead projector though. I know that most of the bulbs that are already in there are very hot, and if you want a lot of light, the overhead/bulbs can be some what costly. I was at an auction and I picked up about 100 flourescent bulbs for like $.50 each. There not the long ones, they are standard bulbs that are slightly larger then normal screw in bulbs. As most of you know, flourescent bulbs dont get very hot at all, and they are somewhat bright. I noticed that the 22watt bulbs create 2200 lumens. I was wondering if I built something to hold 4 or so bulbs inside a overhead projector, if that would work to create enough light? 2200 x 4 = 8800 lumens? Not sure if bulbs add up like that, but if they do then that might be a somewhat cheap solution. Also, I have put 4 bulbs together so that they are almost touching and I left them on for a couple hours and I could still grab the with my bare hand. So I also thought that if this works, then I wont need a noisy fan running all the time when I'm watching a movie or playing a game or whatever. Any feedback on this subject would be greatly appreciated. I'm some what new to LCD projection.
I started out with that $10 fresnel lens kit off of ebay that just turns your 13" tv into a big screen. I was very amazed on the fact that I actually got a 8' screen out of that little 13". I am able to watch tv and what not, but as most of you know its not the clearest picture. So I decided to try my luck with a LCD Projection Panel.
I started out with that $10 fresnel lens kit off of ebay that just turns your 13" tv into a big screen. I was very amazed on the fact that I actually got a 8' screen out of that little 13". I am able to watch tv and what not, but as most of you know its not the clearest picture. So I decided to try my luck with a LCD Projection Panel.