Christie 144-129103-01 Zoom Lens: Eclipse G3, Griffyn 4K32-RGB, Griffyn 4K35-RGB & Griffyn 4K50-RGB

Christie Genuine Lens 144-129103-01 Zoom is an OEM optical accessory for Christie professional projectors. It is a Standard Throw lens with a throw ratio of 1.13-1.66:1. The OEM compatibility list covers 4 models. Before installation, simply verify the projector model and panel size; there is no need to improvise with adapter rings. The value of a genuine lens lies not in additional specification data, but in its factory calibration to the optical path and mount of the projector series. Once installed, the image circle, edge illumination, and focusing travel all meet their design values, eliminating the need to compensate for image quality with keystone correction.

I. Lens Specifications

Specifications are subject to the OEM specifications. Mechanical dimensions, flange distance, and mount type are not listed in the specifications. Please verify them with us using the exact projector model; ordering based solely on a similar model carries the risk that the lens will not fit.

II. Converting Throw Ratio to Installation Distance

The throw ratio is the ratio of the installation distance to the image width. This genuine zoom lens (1.13-1.66:1) corresponds to a range of distances for a given image size and can focus at any distance within that range.

These figures represent the clear distance from the front surface of the lens to the screen and do not account for rear cooling and cable connection space on the projector. Figures are calculated for a 16:10 image; verify the actual distances on site and follow the OEM manual.

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

III. Compatible Projector Models (4 Models)

The table below is taken from the OEM compatibility list. Brightness and resolution are populated from the projector model database. Unavailable data is shown as “—” and is not estimated.

For compatibility with a model outside the list, please send us photos of the projector nameplate and the existing lens for verification. Platforms from the same generation often share the same mount, but the risk of ordering based on a similar model outweighs the convenience.

Throw Ratio by Projector Model Series

The nominal throw ratio of the same 144-129103-01 Zoom varies across the projector series listed below. Select the ratio based on the series of the actual projector.

IV. Three Checks Before Replacement

• Confirm the projector imaging chip and resolution. The genuine lens is designed for a specific panel size. If the panel specifications differ, the image circle will not cover the full image, resulting in vignetting or light loss at the edges after installation.
• Calculate the installation distance first. The lens has a rated throw ratio of 1.13-1.66:1. Use the table in Section II to calculate the distance based on your venue dimensions. A fixed-focus lens offers no adjustment margin, and even a zoom lens needs 10–20 cm of extra room at each end.
• Verify the mount and locking mechanism. The genuine lens is calibrated to the mount of that projector series, and you must hear it lock into place 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 physical products is the safest approach.