BenQ 5J.JAM37.061 Ultra Wide Zoom Short-Throw Lens for 9 Models

BenQ Original Lens 5J.JAM37.061 Ultra Wide Zoom is an original optical accessory for BenQ professional projectors. It belongs to the short-throw (Short Throw) category, with a throw ratio of 0.75:1 - 0.93:1. The manufacturer's compatibility list covers 9 compatible projector models, so simply verify the projector model and panel size before installation—there is no need to make do with adapter rings. The value of an original lens lies not in the extra rows of numbers in the specification sheet, but in its factory calibration to the optical path and mount of that projector series: once installed, the image circle, edge illumination, and focusing travel all meet their design values, with no need to use keystone correction to compensate for the image.

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 specification table, please verify them with us using the projector model. Ordering based solely on a similar model carries the risk of the lens not fitting.

2. Calculating Installation Distance from Throw Ratio

The throw ratio is the ratio of the installation distance to the image width. This original lens is a zoom lens (0.75:1 - 0.93:1). A given image size corresponds to a range of distances, and the lens can focus at any point within that range when installed.

These figures represent the clear distance from the front element of the lens to the screen and do not include space behind the projector for cooling and cabling. They are calculated for a 16:10 image; actual values should be confirmed by on-site measurement and the manufacturer's manual.

Image quality differs at the two ends of the zoom range: near the short end, the image is brighter and the edges are slightly softer; near the long end, the edges are sharper and brightness is slightly lower. If the venue allows, use the middle of the range. After installation, find the sharpest setting on the focus ring first, then fine-tune the lens shift.

3. Compatible Models (9 models)

The table below is taken from the manufacturer's compatibility list. Brightness and resolution are populated from the model database; where the data is unavailable, "—" is shown rather than estimated.

To determine whether a model outside the list is compatible, send us photos of the projector nameplate and the existing lens. Platforms of the same generation often share the same mount, but ordering based on a similar model is not worth the risk.

Throw Ratio by Projector Series

When the same 5J.JAM37.061 Ultra Wide Zoom is installed on the series listed below, the rated throw ratio varies. Select the value according to the series of the actual projector.

4. Three Checks Before Replacement

• Confirm the projector's imaging chip and resolution. The original lens is designed for a specific panel size. If the panel specifications differ, the image circle cannot cover the full image, resulting in vignetting or edge light loss.
• Calculate the installation distance first. With a rated throw ratio of 0.75:1 - 0.93:1, use the table in Section 2 to calculate the distance for your venue. Fixed-focus lenses offer no margin, and zoom lenses should also allow an additional 10–20 cm at both ends.
• Verify the mount and locking mechanism. The original 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 incomplete locking, not by the lens itself.

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