Hi, I have seen some LED driven devices project a little rectangle (unfilled) at a distance of upto 10cm or so - i am wondering how this is done. Is it just a matter of a special lense infront of uBright LED's ? If so, where can i get these lenses, and what are they called. I cant seem to find anything through my google searches. (i can not take apart the above mentioned device to have a closer look, but it is definantly LED's). Alex.