NEC NP16FL-4K Fixed Short-Throw Lens for PX1005QL-B, PX1005QL-B-18, PX1005QL-W, PX1005QL-W-18

The NEC Original Lens NP16FL-4K Fixed is an OEM optical accessory for NEC professional projectors. It is a short-throw lens with a throw ratio of 0.76:1. The manufacturer's model compatibility list covers 4 projector models, so simply verify the projector model and panel size before installation—there is no need to make do with an adapter ring. The value of an original lens lies not in the additional numbers it adds to the specification sheet, but in the fact that it is calibrated at the factory to the optical path and mount of that projector series: once installed, the image circle, edge illumination, and focus travel are all at their design values, so there is no need to use keystone correction to compensate for image quality.

1. Lens Specifications

The above specifications are subject to the manufacturer's official specifications. For mechanical dimensions, flange distance, and mount type not shown in the specifications table, please verify them with us using the projector model; ordering based solely on a similar model carries the risk that the lens will not fit.

2. Converting Throw Ratio to Installation Distance

The throw ratio is the ratio of installation distance to image width. This original lens is fixed-focus (0.76:1), so the installation distance changes linearly with image size and provides no adjustment margin; it must be measured accurately before installation.

The distances above are clear distances from the front surface of the lens to the screen and do not include space behind the projector for heat dissipation or cable connections. They are calculated for a 16:10 image; actual distances should be verified on site and in accordance with the manufacturer's manual.

3. Compatible Projector Models (4 Models)

The following table is taken from the manufacturer's model compatibility list. Brightness and resolution are populated from the model database; where data is unavailable, “—” is shown, with no estimates made.

For models not listed, please send us photos of the projector nameplate and the existing lens so we can verify compatibility—same-generation platforms often share a mount, but the risk of ordering based on a similar model is not worth taking.

Throw Ratio by Projector Series

The rated throw ratio of the same NP16FL-4K Fixed lens varies by projector series, so select the value based on the series of the actual projector.

4. Three Checks Before Replacement

• Confirm the projector chip and resolution. Original lenses are designed for a specific panel size. If the panel specifications differ, the image circle cannot cover the full image, resulting in vignetting or edge illumination loss.
• Calculate the installation distance first. This lens has a rated throw ratio of 0.76:1. Use the table in Section 2 with the dimensions of your installation site. As it is fixed-focus, there is no adjustment margin; even with a zoom lens, allow 10–20 cm at both ends.
• Verify the mount and locking mechanism. The original lens is calibrated to the mount of that projector series. After installation, you must hear it lock into place; a skewed image or soft edges is usually caused by incomplete locking, not by a problem with the lens itself.

If you are unsure, take one photo of each nameplate—the projector and the existing lens—and send them to us. Checking against the actual equipment is the safest approach.