The 140-110103-01 1.5 to 2.0:1 Short Zoom Lens from Christie is compatible with the company's D12HD-H and D12WU-H projectors. It provides a throw ratio of 1.5 to 2.0:1, allowing the distance between the projector and the screen to be approximately 1.5 to 2.0x the width of the projected image.
Please refer to the Christie Projector Lens Calculator