Christie 140-102104-xx Zoom Long-Throw Lens: Fits 28 Models

Christie Genuine Lens 140-102104-xx Zoom is a factory-supplied optical accessory for Christie professional projectors. It is a long-throw lens with a 1.52-2.89:1 throw ratio. The factory compatibility list covers 28 models; before installation, simply verify the projector model and panel size—there is no need to make do with adapter rings. The value of a genuine lens lies not in the extra figures on the specification sheet, but in the fact that its optical path and mount are calibrated to the projector series at the factory: once installed, the image circle, edge illumination, and focusing travel are all at their designed values, so there is no need to use keystone correction to compensate for image quality.

1. Lens Specifications

The above specifications are subject to the factory specifications. For mechanical dimensions, flange distance, and mount type not shown in the specification table, please contact us with the projector model. Ordering based solely on a similar model carries the risk that the lens will not fit.

2. Calculating Installation Distance from Throw Ratio

The throw ratio is the ratio of the installation distance to the image width. This factory-supplied lens is a zoom lens (1.52-2.89:1), so a given image size corresponds to a range of installation distances. It can focus anywhere within that range.

These distances represent the clear distance from the front surface of the lens to the screen and do not include space for rear housing ventilation or cable connections. They are calculated for a 16:10 image; actual distances should be verified on site and according to the factory manual.

Image quality varies at the two ends of the zoom range: near the short end, the image is brighter and the edges are slightly softer; near the long end, the edges are sharper and brightness decreases slightly. Where the installation site allows, the middle of the range is recommended. After installation, set the focus ring to the sharpest position, then fine-tune the lens shift.

3. Compatible Models (28 Models)

The following list is taken from the factory compatibility list. Brightness and resolution have been verified against the model database; entries that could not be verified are shown as "—", with no assumptions made.

To determine whether a model not on the list is compatible, please send photos of the projector nameplate and current lens so we can verify it—platforms of the same generation often share a mount, but ordering based only on a similar model is not worth the risk.

Throw Ratio by Model Series

The rated throw ratio of the same 140-102104-xx Zoom lens varies across the series listed below. When selecting a lens, use the ratio for the series of the actual projector.

4. Three Checks Before Replacement

• Confirm the projector chip and resolution. Genuine lenses are designed for a specific panel size. If the panel specification differs, the image circle cannot cover the full image, resulting in vignetting or light loss at the edges.
• Calculate the installation distance first. This lens has a rated throw ratio of 1.52-2.89:1. Use the table in Section 2 to calculate the distance for your site dimensions; a fixed lens offers no adjustment margin, while a zoom lens should also allow 10–20 cm at both ends.
• Verify the mount and locking mechanism. The genuine lens is calibrated to the mount for that projector series, and you must hear it lock fully into place after installation. A skewed image or soft edges are usually caused by incomplete locking, not by the lens itself.

If you are unsure, take one photo of the projector nameplate and one of the current lens nameplate and send them to us. Verification against the actual units is the safest approach.