The Christie 38-809051-51 is a high-performance, motorized zoom lens engineered as a genuine optical component for specific high-brightness Christie projectors, such as those in the Boxer, Roadster, and M Series lines. This lens provides a versatile zoom ratio of 1.8:1 to 2.4:1, categorizing it as a short to mid-throw lens ideal for installations where the projector must be placed relatively close to the screen but still requires a degree of flexibility for final image sizing and alignment. Its optical design utilizes precision-ground glass elements with advanced multi-layer coatings to maximize light transmission, ensure uniform brightness across the entire image, and maintain the high contrast and color accuracy intrinsic to the host projector's DLP imaging system. The lens is constructed to integrate flawlessly with the projector's optical engine, preserving the integrity of the light path from the light source to the screen without introducing distortion or chromatic aberration.

A key operational feature of this lens is its full motorization, allowing for remote control of zoom, focus, and lens shift functions directly from the projector's onboard menu system, a compatible remote control, or through networked control software like Christie's LiteSite. This capability is essential in permanent installations where the projector is mounted in a difficult-to-access location, such as a high ceiling, rear projection booth, or an enclosed auditorium truss. The motorized adjustments enable installers to perfectly frame the image on the screen during initial calibration and allow for future fine-tuning if the screen or sightlines change, all without the need for physical access to the lens. The mechanism is designed for precision and long-term stability, ensuring the image remains sharp and correctly sized over the projector's operational life.

Built with a durable metal housing, the lens is designed to withstand the thermal output of a high-lumen projector and maintain precise optical alignment in various orientations. As an authentic Christie accessory, it is engineered for complete electronic and mechanical compatibility, enabling features like automatic lens detection and configuration by the projector. The 1.8-2.4:1 zoom range offers meaningful adjustment capability, making it a practical choice for venues like corporate boardrooms, lecture halls, and medium-sized worship spaces where projector placement options may be constrained by architecture or sightlines. The Christie 38-809051-51 zoom lens exemplifies the tailored, professional-grade solutions required to achieve optimal image quality and installation flexibility in demanding projection applications.