Googfan's Mini Projector

Step 3 Find the focal point.

Take your lens that you picked. You need to go in a dark room with your MiniTV, find a white wall and place your MiniTV 1.5' from the wall, screen facing wall. Next turn on your TV. Hold your lens in front of the screen, Move it back and forth untill the picture comes in focus on the wall. Make a note of how far the lens is from the screen when in focus.