The Barco RLD series lens with a 3.0-4.5:1 zoom ratio is a professional long-throw zoom lens engineered for high-brightness Barco installation projectors. This lens offers a substantial zoom range, providing installers with exceptional flexibility in projector placement, particularly in venues where the projector must be positioned a significant distance from the screen. With this zoom capability, the image size can be adjusted within a range where the throw distance is between 3.0 and 4.5 times the screen width. This wide adjustment range is invaluable in large spaces like auditoriums, houses of worship, and lecture halls where the exact mounting location may be constrained by structural elements, and fine-tuning of the image size during installation is necessary to achieve a perfect fit without physically relocating the projector.

Optical performance is meticulously engineered to handle the demands of long-throw projection. The lens utilizes high-grade glass elements with advanced multi-layer coatings to maximize light transmission, maintain edge-to-edge sharpness, and ensure consistent color fidelity across the entire zoom range. It is constructed to withstand the thermal environment of a high-output projector and maintain precise optical alignment during operation. The manual zoom and focus rings allow for smooth, calibrated adjustments during setup. Once configured, the lens holds its position securely, contributing to the long-term stability of the installation. The robust housing protects the delicate internal optics from dust and physical shock.

This lens integrates with compatible Barco projector models via a secure bayonet or locking mount, ensuring a rigid, vibration-free connection. It is part of Barco's comprehensive ecosystem of interchangeable lenses, allowing system designers to select the exact optical tool needed for a venue's specific geometry and screen size. By offering an extended long-throw zoom range, the Barco RLD (3.0-4.5:1) lens provides a versatile and high-quality solution for large venue applications where placement flexibility and consistent, high-impact imagery are critical requirements.