The Panasonic ET-DLE030 Ultra Short Throw Lens is designed for use with the Panasonic PT-RZ120BU, PT-RZ770BU, and RZ-970LBU projectors. This lens allows you to shorten the projection distance, thus saving space and letting you project images in spots where you previously could not, such as places where the ceiling is too high, or where there is not enough front or rear space for projecting. It can be used for digital signage in show windows, stores, train stations, and other locations.