Definitions for "Long Throw Lens"
A lens designed for projection from the back of the room, or rather the back of a long room. Projectors with long throw lenses are used in projection booths in the back of a theatre. A typical long throw lens might have to be 50-100-ft back to project a 10-ft diagonal image.
A lens designed to use on a projector from a long distance, such as in the back of a conference room.
Enables a projector to decrease its image size over the standard lens at the same throw distance. With a long throw distance the user is able to project a smaller image so that it will fit on the screen.