Christie 140-115108-XX Zoom Lens for 18 Compatible Models

Christie Original Lens 140-115108-XX Zoom is an original optical accessory for Christie professional projectors, offering a standard throw (Standard Throw) with a throw ratio of 1.02-1.36:1. The factory compatibility list covers 18 models; simply verify the projector model and panel size before installation, with no need to rely on adapter rings. The value of an original lens lies not in the extra figures it adds to a specification sheet, but in the factory calibration for the optical path and mount of that projector series: once installed, the image circle, edge illumination, and focusing travel all meet their design values, with no need to use keystone correction to compensate for image quality.

I. Lens Specifications

The above specifications are subject to the original manufacturer's specifications. For mechanical dimensions, flange distance, and mount type not shown in the specification table, please verify them with us using the projector model. Ordering based solely on a similar model carries the risk of the lens not fitting.

II. Calculating Installation Distance from Throw Ratio

The throw ratio is the ratio of the installation distance to the image width. This original lens is a zoom lens (1.02-1.36:1), so the same image size corresponds to a range of installation distances, and it can focus at any position within that range.

These values represent the clear distance from the front surface of the lens to the screen and do not include clearance for rear cooling or cable connections. They are calculated for a 16:10 image; actual values should be verified on site and are subject to the original manufacturer's manual.

Image performance differs 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 more defined and brightness decreases slightly. Where the venue allows, we recommend using the middle of the range. After installation, first find the sharpest setting using the focus ring, then fine-tune the lens shift.

III. Compatible Models (18 Units)

The following list is taken from the OEM compatibility list. Brightness and resolution have been populated from the model database; unavailable values are shown as “—” and have not been estimated.

For models not listed, please send us photos of the projector nameplate and current lens for verification—projector platforms from the same generation often use the same mount, but ordering based on a similar model name is not worth the risk.

Throw Ratios by Model Series

The specified throw ratio varies by model series even when the same 140-115108-XX Zoom lens is installed. Select the value that applies to the series of the actual projector.

IV. Three Checks Before Replacement

• Confirm the projector imaging chip and resolution. Original 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 edge light loss after installation.
• Calculate the installation distance first. This lens has a specified throw ratio of 1.02-1.36:1. Use the table in Section II to calculate the required distance for your venue; a fixed-focus lens offers no adjustment margin, and even a zoom lens should allow an additional 10–20 cm at both ends of the range.
• Verify the mount and locking mechanism. The original lens is calibrated for the mount used on that projector series, and you must hear it click into the locked position 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 each of the projector nameplate and the nameplate on the existing lens and send them to us. Verification against the actual items is the safest approach.