Barco R9829997 Very Long Zoom Lens for 30 Compatible Models

Genuine Barco Lens R9829997 Very Long Zoom is a factory-supplied optical accessory for Barco professional projectors. It is a long-throw (Long Throw) lens with a throw ratio of 6.92-10.21:1. The official model compatibility list covers 30 models, so simply verify the projector model and panel size before installation—no need to improvise with an adapter ring. The value of a genuine lens lies not in the additional figures in the specification sheet, but in the fact that it is calibrated at the factory to the optical path and mount of the relevant projector series: the image circle, edge illumination, and focusing travel all match the design values, eliminating the need to use keystone correction to compensate for image quality.

1. Lens Specifications

The above specifications are based on Barco's official specifications. For mechanical dimensions, flange distance, and mount type not shown in the specification table, please provide your projector model so we can verify compatibility. Ordering solely on the basis of a similar model carries the risk that the lens will not fit.

2. Throw Ratio and Installation Distance

The throw ratio is the ratio of the installation distance to the image width. This genuine lens is a zoom lens (6.92-10.21:1), so each image size corresponds to a range of installation distances. It can focus at any distance within that range.

These figures show the clear distance from the front surface of the lens to the screen and exclude space for rear housing ventilation and cable connections. They are calculated for a 16:10 image; actual distances should be verified by on-site measurement and in accordance with the manufacturer's manual.

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

3. Compatible Projector Models (30 Models)

The table below is taken from Barco's official model compatibility list. Brightness and resolution are populated from the model database; unavailable data is shown as “—” and is not estimated.

To check whether a model not listed is compatible, send us photos of the projector nameplate and the existing lens for verification. Platforms of the same generation often share a mount, but ordering solely because the model names are similar is not worth the risk.

Throw Ratio by Model Series

The rated throw ratio of the same R9829997 Very Long Zoom lens differs across the model series listed below. Use the value for the actual projector series when selecting a lens.

4. Three Checks Before Replacement

• Confirm the projector's imaging device and resolution. Genuine lenses are designed for specific panel sizes. If the panel specifications differ, the image circle cannot cover the full frame, resulting in vignetting or light loss at the edges.
• Calculate the installation distance first. The lens has a rated throw ratio of 6.92-10.21:1. Use the table in Section 2 to calculate the distance for your venue. A fixed lens offers no adjustment margin, while a zoom lens should still allow an additional 10–20 cm at both ends.
• Verify the mount and locking mechanism. Genuine lenses are calibrated to the mount of the corresponding projector series. After installation, you must hear the lock engage. A skewed image or soft edges are usually caused by incomplete locking, not by 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 hardware is the safest approach.