Barco R9803073 ILD Long Zoom Lens Guide: Compatible with 9 Models

Barco Genuine Lens R9803073 ILD Long Zoom is an OEM optical accessory for Barco engineering projectors. It is a long-throw lens with a throw ratio of 4.00-7.40:1. The manufacturer’s compatibility list covers 9 models. Before installation, simply verify the projector model and panel size; no adapter ring is needed. The value of an OEM lens lies not in the additional specifications, but in the fact that it is calibrated at the factory to the optical path and mount of that projector series. Once installed, the image circle, edge illumination, and focus travel are all at their design values, eliminating the need to use keystone correction to compensate for image quality.

I. 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 specification table, please contact us with the projector model for verification. Ordering solely based on a similar model carries the risk that the lens will not fit.

II. Calculating Installation Distance from the Throw Ratio

The throw ratio is the ratio of the installation distance to the image width. This OEM lens is a zoom lens with a throw ratio of 4.00-7.40:1. A given image size corresponds to a range of installation distances, and the lens can focus at any distance within that range.

These figures represent the clear distance from the front of the lens to the screen and do not include clearance at the rear of the projector for heat dissipation and cable connections. Figures are based on a 16:10 image; actual distances should be confirmed by on-site measurement and the manufacturer’s manual.

Image quality differs at the two zoom extremes. At the short-throw end, the image is brighter and the edges are slightly softer; at the long-throw end, the edges are more defined and the brightness is slightly reduced. When site conditions allow, use the middle of the range. After installation, find the sharpest position using the focus ring, then fine-tune the lens shift.

III. Compatible Models (9 Models)

The table below is taken from the manufacturer’s compatibility list. Brightness and resolution are listed based on the model database; unavailable values are shown as —, with no assumptions made.

To determine whether a model not listed here is compatible, send us a photo of the projector nameplate and the existing lens. Same-generation platforms often share the same mount, but ordering based solely on a similar model is not worth the risk.

Throw Ratio by Model Series

The nominal throw ratio of the same R9803073 ILD Long Zoom varies by projector series. Select the ratio based on the series of the actual projector.

IV. Three Checks Before Replacement

• Confirm the projector panel and resolution.OEM lenses are designed for a specific panel size. If the panel specifications differ, the image circle cannot cover the full image, resulting in vignetting or loss of illumination at the edges.
• Calculate the installation distance first.The nominal throw ratio of this lens is 4.00-7.40:1. Apply the table in Section II to the dimensions of your venue. A fixed-focus lens provides no adjustment margin, while a zoom lens should retain 10–20 cm at both ends of its range.
• Verify the mount and locking mechanism.OEM lenses are calibrated to the mount of the corresponding projector series. After installation, you must hear the lens click into the locked position. A skewed image or soft edges are usually caused by incomplete locking, rather than an issue 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 hardware is the most reliable approach.