Ultra Short Throw projectors are capable of projecting a large image size at a very short distance, typically just a few centimetres or feet from the projection surface. These projectors are particularly useful in space-constrained environments such as small rooms or classrooms where a traditional projector with a longer throw distance would not be practical. Because of their ability to project an image at such a short distance, ultra short throw projectors also minimize shadows and light shining into the eyes of presenters, a common problem with conventional projectors.