The Optoma BX-CTA28 is a professional motorized ultra short throw (UST) projection lens engineered for large-venue, interactive, and installation projection applications where space constraints and audience interaction are primary considerations. This specialized lens is compatible with select high-brightness Optoma laser and large-venue DLP projectors, enabling them to project exceptionally large images from an extremely close distance to the screen or wall—typically positioning the projector just inches away from the surface. This ultra short throw capability eliminates shadows and glare from presenters, making it ideal for interactive whiteboards, collaborative workspaces, digital signage, and immersive environments where presenters need to stand directly in front of the display without obstructing the image or being blinded by projector light.

The lens features fully motorized zoom, focus, and lens shift functions, which can be controlled remotely via the projector's menu system or through network control protocols. This allows for precise image alignment and adjustment after installation without manual intervention, a critical feature for integrators calibrating systems in hard-to-reach ceiling or wall mounts. The optical design is optimized to minimize distortion and maintain edge-to-edge sharpness and consistent brightness across the entire projected image, even at the extreme corners. By pairing this lens with a compatible high-lumen projector, users can achieve bright, vivid images up to 150 inches or larger from a mounting position that integrates seamlessly into architecture without bulky projector towers or long throw distances.

Constructed with high-quality glass elements and a durable housing, the BX-CTA28 is designed for reliable performance in continuous operation environments such as education, corporate briefing centers, and control rooms. Its integration preserves the native resolution and color performance of the host projector while expanding application possibilities. The lens supports advanced features like lens memory for storing multiple preset positions, facilitating quick switching between different screen formats or presentation setups. For AV integrators and designers, the Optoma BX-CTA28 motorized ultra short throw lens provides a powerful tool to overcome spatial limitations and create engaging, large-format visual experiences where traditional projection solutions are impractical.