Barco R9801785 Fixed Ultra Short Throw Lens: 15 Compatible Models

Barco Original Lens R9801785 Fixed is an original optical accessory for Barco professional projectors. It is an ultra short throw (Ultra Short Throw) lens with a 0.36:1 throw ratio. The official compatibility list covers 15 models. Before installation, simply verify the projector model and panel size; there is no need to make do with an adapter ring. The value of an original lens lies not in the extra figures on 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 all meet their design values, with no need to use keystone correction to compensate for image quality.

1. Lens Specifications

These specifications are subject to the original manufacturer's specifications. Mechanical dimensions, flange distance, and mount type are not listed in the specification table, so please verify them with us based on the projector model. Ordering directly based only on a similar model carries the risk that the lens will not fit.

2. Converting Throw Ratio to Installation Distance

The throw ratio is the ratio of the installation distance to the image width. This original lens has a fixed focal length (0.36:1), so the installation distance varies linearly with image size and offers no adjustment margin. Accurate measurements are essential before installation.

These figures represent the clear distance from the front surface of the lens to the screen and do not include space behind the projector for cooling and cable connections. They are calculated for a 16:10 image; actual distances must be confirmed through on-site measurements and the original manufacturer's manual.

3. Compatible Models (15 Units)

The table below is taken from the original manufacturer's compatibility list. Brightness and resolution have been populated from the model database; where this information is unavailable, “—” is shown, with no assumptions made.

To check whether a model not listed here is compatible, please send us photos of the projector nameplate and the existing lens. Projector platforms from the same generation often share a lens mount, but the risk of ordering based solely on a similar model is not worth taking.

Throw Ratios by Model Series

The nominal throw ratio for the R9801785 Fixed lens varies depending on the projector series listed below. When selecting a model, use the value corresponding to the actual projector series.

4. Three Checks Before Replacement

• Confirm the projector imaging panel and resolution. Original lenses are designed for a specific panel size. With different panel specifications, the image circle cannot cover the image area, resulting in vignetting or edge light loss.
• Calculate the installation distance first. This lens has a nominal throw ratio of 0.36:1; use the table in Section 2 to calculate the distance for your venue. A fixed-focal-length lens offers no adjustment margin, and even a zoom lens requires 10–20 cm of clearance at both ends.
• Verify the mount and lock. Original lenses are calibrated to the mount of that projector series, and you must hear the lens click securely into place after installation. 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 of the projector nameplate and one of the existing lens nameplate, then send them to us. Verification against the actual hardware is the most reliable approach.