Christie 144-105107-XX HB Zoom Long-Throw Projector Lens Guide: 10-Model Compatibility

Christie Genuine Lens 144-105107-XX HB Zoom is an OEM optical accessory for Christie professional projectors. It is a long-throw (Long Throw) lens with a throw ratio of 1.63-2.17:1. The factory compatibility list covers 10 projector models; before installation, simply verify the projector model and panel size, with no need to improvise using adapter rings. The value of a genuine lens lies not in the extra figures it adds to a specification sheet, but in its factory calibration 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, so there is no need to use keystone correction to compensate for image quality.

1. Lens Specifications

These specifications are subject to the official factory specifications. For mechanical dimensions, flange distance, and mount type not shown in the table, please contact us with the projector model. Ordering directly based 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 installation distance to image width. This genuine zoom lens (1.63-2.17:1) produces a range of installation distances for a given image size, and any position within that range can be focused.

The distances above are the clear distances from the front surface of the lens to the screen and do not include clearance behind the projector for heat dissipation and cable connections. They are calculated for a 16:10 image; for the actual installation, rely on on-site measurements and the factory manual.

Image quality varies at the two ends of the zoom range: toward the short-throw end, the image is brighter and the edges are slightly softer; toward the long-throw end, the edges are sharper and brightness decreases slightly. Where the venue allows, use the middle of the range. After installation, first find the sharpest position using the focus ring, then fine-tune the lens shift.

3. Compatible Models (10 Models)

The following table is taken from the factory compatibility list. Brightness and resolution are taken from the model database; where the data is unavailable, “—” is shown rather than making assumptions.

To check whether a model not on the list can be used, send us photos of the projector nameplate and the existing lens. Same-generation platforms often share the same mount, but ordering based solely on a similar model name is not worth the risk.

Throw Ratio by Model Series

The nominal throw ratio differs among the following projector series when the same 144-105107-XX HB Zoom lens is installed, so select the value according to the actual projector series.

4. Three Checks Before Replacement

• Confirm the projector chip and resolution. Genuine lenses are designed for a specific panel size. If the panel specifications differ, the image circle cannot cover the full panel, resulting in vignetting or light loss at the edges after installation.
• Calculate the installation distance first. This lens has a nominal throw ratio of 1.63-2.17:1. Apply the table in Section 2 to your venue dimensions; a fixed-focus lens offers no adjustment margin, and a zoom lens should also leave 10–20 cm at both ends.
• Verify the mount and locking mechanism. The genuine lens is calibrated to the mount of that 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, not by a problem with the lens itself.

If you are unsure, send us a photo of each nameplate—the projector nameplate and the nameplate on the existing lens. Verification against the actual products is the safest approach.