Sharp NP31ZL – 0.75-0.93:1 Short-Throw Zoom Lens for PX Series Projectors

Product Overview

The Sharp NEC NP31ZL is a 0.75-0.93:1 short-throw zoom lens engineered for the NEC PX Series of large-venue installation projectors. This interchangeable projector lens lets AV integrators position a PX Series projector close to the screen in conference rooms, auditoriums, and exhibition spaces where rear projection distance is limited. With powered zoom and focus, the NP31ZL supports precise image alignment during commercial AV installation without ladders or repeated trips to the projector. It is a bayonet-style replacement lens that installs in the field with no special tools.

Product Description

Short-throw projection is a common requirement in commercial AV deployments where the projector must be mounted near the screen — shallow stages, low-ceiling meeting spaces, tradeshow booths, and rear-projection cabinets. The NP31ZL's 0.75 to 0.93:1 throw ratio produces a large image from a short distance, filling screens from 50 to 300 inches diagonal at throw distances of roughly 2.6 to 19.7 feet. The 1.25x zoom range gives installers flexibility to fine-tune image size after the projector mount position is fixed, which simplifies retrofit projects and multi-room standardization.

Optically, the lens offers an f/1.96 to f/2.3 aperture and an 11.3 to 14.1mm focal length, maintaining brightness and sharpness across the zoom range when paired with high-output PX Series laser and lamp models. Because zoom and focus are motorized, technicians can adjust the image from the remote control or via the projector's network control interface — useful in fixed installations such as houses of worship, government chambers, and university lecture halls where the projector is ceiling-mounted. The lens is user-installable, making it practical to stock as a spare or to reconfigure existing PX Series projectors for a new venue rather than replacing the entire unit.

Verified compatibility covers the NP-PX700W/PX700W2, NP-PX750U/PX750U2, NP-PX800X/PX800X2, NP-PX803UL-BK/WH, and NP-PX1004UL-BK/WH projector families.

Key Features

• 0.75-0.93:1 Short-Throw Ratio — Projects a large image from a short distance, ideal for shallow rooms and rear-projection enclosures.
• Powered Zoom and Focus — Motorized adjustment lets technicians align the image remotely after the projector is ceiling-mounted.
• 1.25x Zoom Range — Provides installation flexibility to match screen size without moving the projector mount.
• 50 to 300 Inch Image Size — Scales from huddle-space screens to auditorium-grade projection surfaces.
• Tool-Free Field Installation — Bayonet-style lens swaps in minutes by end users or integrators, no service call required.
• Broad PX Series Compatibility — Works with NP-PX700W, PX750U, PX800X, PX803UL, and PX1004UL projector families, including second-generation models.
• Bright f/1.96-2.3 Aperture — Preserves light output from high-lumen PX Series laser projectors across the zoom range.

Typical Applications

• Auditorium
• House of worship
• Government space
• Multi-purpose room
• All-hands room
• Broadcast studio

Technical Specifications

Frequently Asked Questions

Which projectors is the Sharp NEC NP31ZL compatible with?

The NP31ZL is verified for the NEC PX Series: NP-PX700W and PX700W2, NP-PX750U and PX750U2, NP-PX800X and PX800X2, NP-PX803UL-BK/WH, and NP-PX1004UL-BK/WH, including the -18 and -R variants of those models.

Can I install the NP31ZL myself or do I need a certified technician?

The lens is designed for tool-free end-user installation. It mounts to the PX Series lens bay in minutes, so integrators and in-house AV staff can swap lenses in the field without a factory service visit.

Does the NP31ZL support powered lens adjustment?

Yes. Zoom and focus are motorized and can be controlled from the projector remote or over the projector's network control interface, which is helpful for ceiling-mounted installations.

What screen sizes can this lens cover?

The NP31ZL produces images from 50 to 300 inches diagonal at throw distances of approximately 2.6 to 19.7 feet, making it suitable for everything from meeting rooms to auditorium screens.

What warranty does the lens carry?

Sharp NEC backs the NP31ZL with a 1-year limited parts-and-labor warranty. Creation Networks can also assist with pre-sales compatibility checks and post-sale support for your AV system integration.

Is there a 4K version of this lens?

Yes. For 4K PA Series and similar projectors, Sharp NEC offers the NP31ZL-4K, which adds lens memory support. Creation Networks carries the NP31ZL-4K short-throw zoom lens as well.