The Sanyo LNS-S31 is a professional accessory lens used to optimize the placement and performance of compatible Sanyo commercial projectors. As an interchangeable "standard zoom" lens, it offers a versatile throw ratio suitable for average-sized conference rooms, lecture halls, and auditoriums. The zoom functionality allows installers to precisely adjust the image size and focus without physically moving the projector unit. It features high-quality optical components designed to maintain the sharpness, clarity, and brightness of the projected image, ensuring professional-grade visual output. The robust design allows for easy attachment and removal, facilitating quick changes in installation requirements.