Long throw projectors are specifically designed to project images over long distances. They have a longer focal length lens, which allows them to project a larger image from a greater distance. The throw distance typically ranges from 10 to 100 feet or more, depending on the model.
Short throw projectors are specifically designed to project large images from a short distance, making them ideal for smaller rooms or spaces where there is limited projection distance available. Short throw projectors have a low throw ratio, typically ranging from 0.4:1 to 1.0:1.
Ultra short throw projectors are designed to project images from a very short distance. Typically, they can be placed within a few inches to a couple of feet away from the projection surface. This allows for a large image size even in small spaces.