Barco R9832740 Fixed Short-Throw Lens Guide: MSWU-81E, RLM-W6, RLM-W8

Barco Original Lens R9832740 Fixed is an original optical accessory for Barco professional projectors. It is a short-throw (Short Throw) lens with a 0.77:1 throw ratio. The official compatibility list covers 3 models; before installation, simply verify the projector model and panel size—no adapter ring workaround is needed. The value of an original lens lies not in a few extra figures in the specification sheet, but in the fact that it is calibrated at the factory to the optical path and lens mount of that model series. Once installed, the image circle, edge illumination, and focusing travel are all at their design values, so there is 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 lens mount type not shown in the specification table, please verify them with us based on the projector model; ordering solely on the basis of a similar model 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 is a fixed-focus lens (0.77:1). The installation distance varies linearly with image size and offers no adjustment margin, so accurate measurements are essential before installation.

The above figures represent the clear distance from the front of the lens to the screen and do not include space behind the projector for heat dissipation or cable connections. They are calculated for a 16:10 image; actual distances should be verified on site and are subject to the original manufacturer's manual.

III. Compatible Models (3 Models)

The following table is taken from the official compatibility list. Brightness and resolution have been populated from the model database; values that cannot be retrieved are listed as “—”, with no assumptions made.

To determine whether a model not on the list can be used, please send us a photo of the projector nameplate and the current lens for verification. Platforms of the same generation often share the same lens mount, but ordering based on a similar model is too risky.

Throw Ratio by Projector Series

The nominal throw ratio varies by projector series when the same R9832740 Fixed lens is used. Select the ratio based on the series of the actual projector.

IV. Three Checks Before Replacement

• Confirm the projector imaging chip and resolution. Each original lens is designed for a specific panel size. If the panel specifications differ, the image circle cannot cover the full panel, resulting in vignetting or light loss at the edges after installation.
• Calculate the installation distance first. This lens has a nominal throw ratio of 0.77:1; use the table in Section II to calculate the distance for your installation site. As it is fixed-focus with no adjustment margin, even a zoom lens should allow 10–20 cm at both ends.
• Verify the lens mount and locking mechanism. The original lens is calibrated to the lens mount of that projector series. After installation, you must hear the lens lock into place. A skewed image or soft edges usually indicate that the lens is not fully locked, rather than a problem with the lens itself.

If you are unsure, send us one photo of the projector nameplate and one of the nameplate on the current lens. Verification against the actual items is the most reliable approach.