Barco R9832761 Zoom Standard Throw Lens: RLS-W12 Compatibility

Barco Original Lens R9832761 Zoom is an original optical accessory for Barco professional projectors. It features a standard throw (Standard Throw) and a throw ratio of 1.56-1.86:1. The manufacturer's compatibility list covers 1 model; before installation, simply verify the projector model and panel size, with no need to resort to adapter rings. The value of an original lens lies not in the additional figures in its specifications, but in the fact that it is factory-calibrated to the optical path and mount of that model series: once installed, the image circle, edge illumination, and focus travel are all at their design values, with no need to use keystone correction to compensate for image quality.

I. Lens Specifications

Brand	Barco (Barco)
Lens Model	R9832761 Zoom
Throw Ratio	1.56-1.86:1
Product Type	Standard-throw lens (Standard Throw)
Compatible Projector Models	1 model
Warranty	12 months; after-sales service is available for damage not caused by human error, subject to the date on the shipping receipt

The above specifications are based on the manufacturer's specifications. For mechanical dimensions, flange distance, and mount type not shown in the specifications table, please contact us to verify them using the projector model. Ordering based solely on a similar model carries the risk that the lens will not fit.

II. Converting Throw Ratio into Installation Distance

The throw ratio is the ratio of the installation distance to the image width. This original lens is a zoom lens (1.56-1.86:1), so a given image size corresponds to a range of distances, and it can focus at any installation distance within that range.

Image Size	Image Width	Required Installation Distance
100 inches	2.15 m	Approximately 3.35 – 4.00 m
120 inches	2.58 m	Approximately 4.02 – 4.80 m
150 inches	3.22 m	Approximately 5.03 – 6.00 m
200 inches	4.30 m	Approximately 6.71 – 8.00 m

The above figures represent the clear distance from the front surface of the lens to the projection screen and do not account for rear projector ventilation or cabling space. They are calculated for a 16:10 image; actual distances should be confirmed through on-site measurement and the manufacturer's manual.

Image quality differs at the two ends of the zoom range: toward the close end, the image is brighter and the edges are slightly softer; toward the far end, the edges are sharper and brightness is slightly lower. When site conditions allow, it is recommended to place the lens around the middle of the range. After installation, first find the sharpest setting on the focus ring, and then fine-tune the lens shift.

III. Compatible Projector Models (1 model)

The following table is taken from the manufacturer's model compatibility list. Brightness and resolution are populated from the model database; where the data is unavailable, “—” is shown and no assumptions are made.

Model	Brightness	Resolution
RLS-W12	11000 lumens	1920x1200

For compatibility with models not listed, please send us photos of the projector nameplate and the existing lens. Although platforms from the same generation often share the same mount, ordering based on a similar model is not worth the risk.

Throw Ratios Across Model Series

The nominal throw ratio varies by series when the same R9832761 Zoom is installed on the following series. When selecting a lens, use the value for the series of the actual projector.

Model Series	Throw Ratio
—	1.56-1.86:1

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 cover the image, resulting in vignetting or light loss at the edges.
• Calculate the installation distance first. This lens has a nominal throw ratio of 1.56-1.86:1. Use the table in Section II to calculate the distance for your venue. Fixed-focus lenses offer no adjustment margin, while zoom lenses still require 10–20 cm of clearance at both ends.
• Verify the mount and locking mechanism. The original lens is calibrated to the mount of that model series, and you must hear it click securely into place after installation. 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 each of the projector nameplate and the existing lens nameplate. Verification against the actual products is the safest approach.