Barco R98017211 Long Zoom Lens: Medea Compatibility

Barco Genuine Lens R98017211 Long Zoom is an original optical accessory for Barco engineering projectors. It is a long-throw (Long Throw) lens with a throw ratio of 2.00-3.00:1. The manufacturer's compatibility list covers 1 compatible projector model; before installation, simply verify the projector model and panel size, with no need for adapter rings or other makeshift solutions. The value of a genuine lens lies not in the extra rows of specifications, 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 operate at their design values, eliminating the 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 shown in the specifications table, please provide your projector model so we can verify compatibility. Placing an order solely on the basis of a similar model carries the risk that the lens may not fit.

2. Converting Throw Ratio to Installation Distance

The throw ratio is the ratio of the installation distance to the image width. This genuine zoom lens (2.00-3.00:1) provides a range of installation distances for a given image size, and it can achieve focus at any point within that range.

These figures represent the clear distance from the front surface of the lens to the screen and do not include space for rear projector ventilation or cable connections. They are calculated for a 16:10 image; verify the actual distance on site and according to the manufacturer's manual.

Image quality differs at the two ends of the zoom range: at the short-throw end, the image is brighter and the edges are slightly softer; at the long-throw end, the edges are sharper and brightness is slightly lower. When site conditions allow, use a position near the middle of the range. After installation, find the sharpest image by adjusting the focus ring, then fine-tune the lens shift.

3. Compatible Projector Models (1 model)

The table below is taken from the manufacturer's compatibility list. Brightness and resolution are populated from the model database; where the data is unavailable, “—” is shown rather than estimated.

For a model not included in the list, send us photos of the projector nameplate and the existing lens for verification. Projector platforms of the same generation often share the same mount, but ordering solely because the model looks similar is not worth the risk.

Throw Ratio by Projector Series

The nominal throw ratio for the same R98017211 Long Zoom lens varies by projector series, as shown below. When selecting a lens, use the value corresponding to the series of the actual projector.

4. Three Checks Before Replacement

• Confirm the projector imaging chip and resolution. Genuine lenses are designed for specific panel sizes. 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 rated throw ratio of 2.00-3.00:1. Use the table in Section 2 to calculate the distance for your installation site. A fixed-focus lens provides no adjustment margin, while even a zoom lens should be allowed 10–20 cm of clearance at both ends of the range.
• Verify the mount and locking mechanism. Genuine lenses are calibrated to the mount of the applicable projector series, and you must hear the lock engage fully after installation. 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 nameplate on the existing lens, then send them to us. Verification against the actual products is the safest approach.