NEC NP15ZL Zoom Telephoto Projector Lens: Compatible with 20 Models Including PA1004UL-B

NEC Original Lens NP15ZL Zoom is a genuine optical accessory for NEC installation projectors, belonging to the long-throw category, with a throw ratio of 4.70-7.02:1. The original compatibility list covers 20 projector models; before installation, simply verify against the projector model and panel size — no adapter rings needed. The value of an original lens isn't a few extra rows of numbers on a spec sheet, but that it is calibrated at the factory to the optical path and mount of that series' chassis: once installed, the image circle, edge illumination, and focus travel are all at their design values, with no need to compensate image quality via keystone correction.

1. Lens Specifications

Brand	NEC (NEC)
Lens Model	NP15ZL Zoom
Throw Ratio	4.70-7.02:1
Product Type	Long Throw
Compatible Models	20
Warranty	12 months; after-sales service available for non-human damage, based on the date on the shipping document

The above specifications are subject to the original manufacturer's specifications. For mechanical dimensions, flange focal distance, and mount type not shown in the spec table, please verify with us against the projector model — ordering based on model similarity alone carries the risk of incompatibility.

2. Converting Throw Ratio to Installation Distance

Throw ratio is the ratio of installation distance to image width. This original lens is a zoom lens (4.70-7.02:1), so the same image size corresponds to a range of distances; as long as installation falls within this range, focus can be achieved.

Image Size	Image Width	Required Installation Distance
100 inches	2.15 m	Approx. 10.11 – 15.09 m
120 inches	2.58 m	Approx. 12.13 – 18.11 m
150 inches	3.22 m	Approx. 15.16 – 22.64 m
200 inches	4.30 m	Approx. 20.21 – 30.19 m

The above figures are the clear distance from the lens face to the screen, excluding rear ventilation and cabling space behind the chassis. Calculated for 16:10 aspect ratio; actual values are subject to on-site measurement and the original manufacturer's manual.

Image quality differs at the two ends of the zoom range: toward the near end the image is brighter with slightly softer edges; toward the far end the edges are sharper with slightly reduced brightness. Where space permits, it is recommended to land in the middle of the range; after installation, first find the sharpest position on the focus ring, then fine-tune the shift.

3. Compatible Models (20)

The table below is taken from the original compatibility list; brightness and resolution are filled in from the model database, with "—" where unavailable, without speculation.

Model	Brightness	Resolution
PA1004UL-B	10000 lumens	1920x1200
PA1004UL-B-41	10000 lumens	1920x1200
PA1004UL-W	10000 lumens	1920x1200
PA1004UL-W-41	10000 lumens	1920x1200
PA500U	5000 lumens	1920x1200
PA500U-13ZL	5000 lumens	1920x1200
PA500X	5000 lumens	1024x768
PA500X-13ZL	5000 lumens	1024x768
PA521U	5200 lumens	1920x1200
PA521U-13ZL	5200 lumens	1920x1200
PA550W	5500 lumens	1280x800
PA550W-13ZL	5500 lumens	1280x800
PA571W	5700 lumens	1280x800
PA571W-13ZL	5700 lumens	1280x800
PA600X	6000 lumens	1024x768
PA600X-13ZL	6000 lumens	1024x768
PA622U	6200 lumens	1920x1200
PA622U-13ZL	6200 lumens	1920x1200
PA672W	6700 lumens	1280x800
PA672W-13ZL	6700 lumens	1280x800

To determine whether models outside this list are usable, please send us photos of the projector nameplate and the existing lens for verification — same-generation platforms often share mounts, but ordering based on model similarity alone is a risk not worth taking.

Throw Ratios Across Model Series

The same NP15ZL Zoom mounted on the following series has different nominal throw ratios; selection should be based on the actual series of the projector.

Model Series	Throw Ratio
—	4.70-7.02:1

4. Three Things to Confirm Before Replacement

• Confirm the projector chip and resolution. Original lenses are designed for specific panel sizes; with different panel specifications the image circle cannot cover the screen, resulting in vignetting or edge light loss after installation.
• Calculate the installation distance first. This lens has a nominal throw ratio of 4.70-7.02:1; use the table in Section 2 to map it to your venue dimensions. Prime lenses have no margin, and even zoom lenses should leave 10–20 cm at both ends.
• Verify the mount and locking. Original lenses are calibrated to the mount of that series' chassis; after installation you must hear the lock engage. Image skew and soft edges are mostly due to incomplete locking, not a problem with the lens itself.

If unsure, take a photo of the projector nameplate and the existing lens nameplate and send them to us — verification against the actual hardware is the most reliable approach.