BenQ 5J.JDH37.041 Long Zoom Lens Guide: HT6050 PU9220 PU9220+ PX9210 W8000

The BenQ original lens 5J.JDH37.041 Long Zoom is an OEM optical accessory designed for BenQ business projectors. It is a long-throw (Long Throw) lens with a throw ratio of 3.00:1 - 5.00:1. The OEM compatibility list covers 5 projector models. Before installation, simply verify the lens against the projector model and panel size—no adapter rings are needed. Its value lies not in the extra rows of specifications, but in the fact that it is calibrated at the factory to the optical path and lens mount of that projector series. Once installed, the image circle, edge illumination, and focusing range all meet the intended design values, so there is no need to compensate for image quality with keystone correction.

1. Lens Specifications

Brand	BenQ（BenQ）
Lens Model	5J.JDH37.041 Long Zoom
Throw Ratio	3.00:1 - 5.00:1
Product Type	Long-throw (Long Throw)
Compatible Models	5 projectors
Warranty	12 months; after-sales service is available for damage not caused by the user, based on the date on the shipping document

The above specifications are subject to the OEM specifications. For mechanical dimensions, flange distance, and mount type not listed in the specification table, please verify them with us based on the projector model, as ordering solely based on a similar model risks a fit issue.

2. Calculating Installation Distance from Throw Ratio

The throw ratio is the ratio of the installation distance to the image width. This OEM lens is a zoom lens (3.00:1 - 5.00:1), so a given image size corresponds to a range of installation distances. Any distance within that range can be brought into focus.

Image Size	Image Width	Required Installation Distance
100 inches	2.15 m	approx. 6.45 – 10.75 m
120 inches	2.58 m	approx. 7.74 – 12.90 m
150 inches	3.22 m	approx. 9.67 – 16.12 m
200 inches	4.30 m	approx. 12.90 – 21.50 m

These figures represent the clear distance from the front of the lens to the screen and do not account for rear housing ventilation or cable-management space. Calculations are based on a 16:10 image; actual installation should be confirmed on site and according to the OEM manual.

Image quality differs at the two ends of the zoom range: toward the near end, the image is brighter and the edges are slightly softer; toward the far end, the edges are sharper and brightness decreases slightly. Where the venue allows, the middle of the range is recommended. After installation, first find the sharpest image using the focus ring, then fine-tune the lens shift.

3. Compatible Models (5 Projectors)

The table below is taken from the OEM compatibility list. Brightness and resolution are populated from the model database; entries that cannot be verified are marked “—” and are not estimated.

Model	Brightness	Resolution
HT6050	2000 lumens	1920x1080
PU9220	5000 lumens	1920x1200
PU9220+	5000 lumens	1920x1200
PX9210	6000 lumens	1024x768
W8000	2000 lumens	1920x1080

For models not included in the list, please send us photos of the projector nameplate and current lens so we can verify compatibility. Platforms from the same generation often share the same mount, but the risk of ordering based on a similar model is not worth taking.

Throw Ratios by Projector Series

The rated throw ratio of the same 5J.JDH37.041 Long Zoom differs across the projector series listed below. Use the value corresponding to the actual projector series when selecting a lens.

Model Series	Throw Ratio
—	3.00:1 - 5.00:1

4. Three Checks Before Replacement

• Confirm the projector’s imaging chip and resolution. OEM lenses are designed for a specific panel size. If the panel specifications differ, the image circle cannot cover the full area, resulting in vignetting or light loss at the edges after installation.
• Calculate the installation distance first. This lens has a rated throw ratio of 3.00:1 - 5.00:1. Use the table in Section 2 to calculate the distance for your venue. A fixed lens offers no adjustment margin, and a zoom lens should also allow an extra 10–20 cm at each end.
• Check the mount and locking mechanism. The OEM lens is calibrated for the mount of that projector series. After installation, you must hear it lock into place. A skewed image or soft edges are usually caused by an incompletely locked lens, not by the lens itself.

If you are unsure, send us one photo each of the projector nameplate and the nameplate on the existing lens. Verification against the actual hardware is the safest approach.