Barco R9832742 Zoom Standard-Throw Lens Guide: Compatible with MSWU-81E, RLM-W6, RLM-W8

Barco Genuine Lens R9832742 Zoom is an OEM optical accessory for Barco engineering projectors. It is a standard-throw lens (Standard Throw) with a throw ratio of 1.45-1.74:1. The official compatibility list covers 3 projector models; before installation, simply verify the projector model and panel size—no adapter ring needed. The value of a genuine lens lies not in the extra figures on a 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 match the design values, with 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 listed in the specifications table, please provide your projector model so that we can verify them. Ordering based solely on a similar model carries the risk that the lens will not fit.

2. Calculating the Installation Distance from the Throw Ratio

The throw ratio is the ratio of the installation distance to the image width. This genuine lens is a zoom lens (1.45-1.74:1), so a given image size corresponds to a range of installation distances, and the lens can be focused anywhere within that range during installation.

These figures represent the clear distance from the front surface of the lens to the projection screen and do not include space behind the projector for cooling and cable connections. They are calculated for a 16:10 image aspect ratio; actual values should be verified on site and are subject to the manufacturer's manual.

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

3. Compatible Projector Models (3 Units)

The table below is taken from the official model compatibility list. Brightness and resolution are filled in from the model database; where the data is unavailable, “—” is shown, with no estimates made.

To verify whether models outside the list are compatible, please send us photos of the projector nameplate and the current lens. Platforms from the same generation often share the same mount, but placing an order solely on the basis of a similar model name is too risky.

Throw Ratios by Projector Series

The rated throw ratio of the same R9832742 Zoom varies by the projector series listed below; select the value based on the series of the actual projector.

4. Three Checks Before Replacement

• Confirm the projector chip and resolution. This genuine 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 after installation.
• Calculate the installation distance first. The rated throw ratio of this lens is 1.45-1.74:1; use the table in Section 2 to calculate the distance for your venue dimensions. A fixed-focus lens offers no adjustment margin, and even a zoom lens should leave 10–20 cm of extra room at both ends of the range.
• Verify the mount and locking mechanism. The genuine lens is calibrated to the mount of that projector series and must be fully locked after installation—you should hear it click into place. A skewed image or soft edges are usually caused by incomplete locking, rather than a problem with the lens itself.

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