What is Front Projection?
This is what is most commonly used in home theater rooms. It is a projector and requires the correct screen for best viewing. They are primarily using LCD or DLP technologies. In some cases projectors are used as rear projection as well in home theaters. This does require a special screen assembly utilizing mirrors to get the picture to the screen. You will see in a home theater projectors menu the option to reverse the image as well as turn it upside down.