Barco R9832743 Zoom Telephoto Lens: Compatible with MSWU-81E, RLM-W6, RLM-W8

Barco Original Lens R9832743 Zoom is an original optical accessory for Barco engineering projectors. It is a long-throw (Long Throw) lens with a throw ratio of 1.74-2.17:1. The factory compatibility list covers 3 models. Before installation, simply verify the projector model and panel size; there is no need to improvise with adapter rings. The value of an original lens lies not in the extra figures in its specification sheet, 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 travel are all at their design values, with no need to use keystone correction to compensate for image quality.

I. Lens Specifications

The above specifications are subject to the original manufacturer’s specifications. For mechanical dimensions, flange distance, and mount type not shown in the specification table, please contact us with your projector model for verification. Ordering solely because the model numbers are similar carries the risk that the lens will not fit.

II. Calculating Installation Distance from Throw Ratio

The throw ratio is the ratio of the installation distance to the image width. This original lens has a zoom function (1.74-2.17:1), so a given image size corresponds to a range of installation distances. The lens can be focused anywhere within that range during installation.

The above figures represent the clear distance from the front surface of the lens to the screen and do not include space required for rear cooling and cable connections. They are calculated for a 16:10 image; actual values should be verified on site and in accordance with the original manufacturer’s manual.

Image quality varies between the two ends of the zoom range: the image is brighter and the edges are slightly softer near the short-throw end, while the edges are sharper and brightness is slightly lower near the long-throw end. Where site conditions allow, the middle of the range is recommended. After installation, first find the sharpest position using the focus ring, and then fine-tune the lens shift.

III. Compatible Models (3 units)

The table below is taken from the factory compatibility list. Brightness and resolution have been populated from the model database; where these values are unavailable, “—” is shown, with no assumptions made.

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

Throw Ratios by Model Series

The nominal throw ratio varies among the series below when using the same R9832743 Zoom lens. Select the value based on the series of the actual projector.

IV. Three Checks Before Replacement

• Confirm the projector panel and resolution. Original lenses are designed for a specific panel size. If the panel specifications differ, the image circle cannot provide full coverage, resulting in vignetting or light loss at the edges after installation.
• Calculate the installation distance first. This lens has a nominal throw ratio of 1.74-2.17:1. Use the table in Section II to determine the distance for your site dimensions. A fixed-focus lens provides no adjustment margin, and even a zoom lens requires 10–20 cm of allowance 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 the lens lock into place. Image skew and soft edges are usually caused by incomplete locking rather than a problem with the lens itself.

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