Barco R9832769 Zoom Long-Throw Lens Guide: PHWU-81B PHWX-81B PHXG-91B

Barco Original Lens R9832769 Zoom is an original optical accessory for Barco engineering projectors, in the Long Throw category, with a throw ratio of 2.80-4.50:1. The factory compatibility list covers 3 models, so before installation simply check the chassis model and panel size — there is no need to improvise with adapter rings. The value of an original lens lies not in a few extra rows of numbers in the spec sheet, but in the fact that it is calibrated at the factory to the optical path and mount of that model series: once fitted, the image circle, edge illumination and focus travel are all at their designed values, with no need to compensate for image quality with keystone correction.

I. Lens Specifications

The above specifications are subject to the original manufacturer data. Mechanical dimensions, flange distance and mount type are not listed in the spec table; please check them with us against your chassis model, as ordering on the basis of a similar model carries the risk of the lens not fitting.

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 (2.80-4.50:1), so a single image size corresponds to a range of distances, and any position within that range will focus correctly.

The above is the net distance from the front element of the lens to the screen, excluding space for rear cooling and cabling on the projector. Calculated on a 16:10 aspect ratio; actual values are subject to on-site measurement and the manufacturer's manual.

Image quality differs at the two ends of the zoom: toward the near end the image is brighter and the edges slightly soft; toward the far end the edges are sharper and the brightness slightly lower. Where the venue allows, it is recommended to stay in the middle of the range; after installation, find the sharpest position on the focus ring first, then fine-tune the lens shift.

III. Compatible Models (3 Units)

The table below is taken from the factory compatibility list; brightness and resolution are filled in from the model database, and entries that cannot be retrieved are marked "—" without speculation.

For models not on the list, please send us a photo of the chassis nameplate and of the existing lens so we can verify compatibility — platforms of the same generation often share a mount, but ordering on the basis of a similar model number is not worth the risk.

Throw Ratios by Model Series

The same R9832769 Zoom mounted on the series below has different nominal throw ratios, so model selection must follow the series your actual chassis belongs to.

IV. Three Things to Confirm Before Replacement

• Confirm the chassis chip and resolution.Original lenses are designed for a specific panel size; if the panel specification differs, the image circle cannot cover the full frame, and the result after fitting is vignetting or light loss at the edges.
• Calculate the installation distance first.This lens is rated at a throw ratio of 2.80-4.50:1 — apply the table in Section II to your own venue dimensions; a fixed-focus lens leaves no margin, and even a zoom lens needs 10–20 cm of allowance at both ends.
• Verify the mount and locking mechanism.Original lenses are calibrated to the mount of that model series, and you must hear it click into the locked position after fitting; a skewed image or soft edges are usually caused by incomplete locking, not by a fault in the lens itself.

If you are unsure, take one photo of the chassis nameplate and one of the nameplate on the existing lens and send them to us — verifying against the physical items is the safest approach.