Christie 140-158105-01 Zoom Lens: Jazz 4K1600-JS, Jazz 4K2100-JS, Jazz DWU1800-JS, Jazz DWU2400-JS

Christie Original Lens 140-158105-01 Zoom is an original optical accessory for Christie engineering projectors. It is a Standard Throw lens with a throw ratio of 1.30-1.80:1. The official compatibility list covers 4 models; before installation, simply verify the projector model and panel size—no adapter rings needed. The value of an original lens lies not in the extra rows of numbers in the specification sheet, but in the fact that it is calibrated at the factory 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, so there is no need to use keystone correction to compensate for image quality.

1. Lens Specifications

Brand	Christie (Christie)
Lens Model	140-158105-01 Zoom
Throw Ratio	1.30-1.80:1
Product Type	Standard Throw lens (Standard Throw)
Compatible Models	4 models
Warranty	12 months; damage not caused by user error is eligible for after-sales service, based on the date shown on the shipping document

The above specifications are subject to the manufacturer's official specifications. For mechanical dimensions, flange distance, and mount type not shown in the specification table, please verify them with us using the exact projector model. Ordering solely on the basis of 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 original zoom lens (1.30-1.80:1) supports a range of distances for the same image size and can achieve focus at any position within that range.

Image Size	Image Width	Required Installation Distance
100 inches	2.15 m	Approx. 2.79 – 3.87 m
120 inches	2.58 m	Approx. 3.35 – 4.64 m
150 inches	3.22 m	Approx. 4.19 – 5.80 m
200 inches	4.30 m	Approx. 5.59 – 7.74 m

These figures represent the clear distance from the front element of the lens to the screen and do not include space behind the chassis for cooling and cable connections. They are calculated for a 16:10 image; actual values should be confirmed through on-site measurements and the manufacturer's manual.

Image quality differs 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 is slightly lower. Where site conditions allow, the middle of the range is recommended. After installation, find the sharpest position on the focus ring, then fine-tune the lens shift.

3. Compatible Models (4 Models)

The table below is taken from the manufacturer's compatibility list. Brightness and resolution are populated from the model database; unavailable values are shown as “—”, and no assumptions are made.

Model	Brightness	Resolution
Jazz 4K1600-JS	—	—
Jazz 4K2100-JS	—	—
Jazz DWU1800-JS	—	—
Jazz DWU2400-JS	—	—

For models not on the list, please send us photos of the projector nameplate and existing lens so we can verify compatibility—same-generation platforms often share mounts, but ordering based solely on a similar model is not worth the risk.

Throw Ratio by Model Series

The rated throw ratio varies when the same 140-158105-01 Zoom lens is installed on the series listed below. Select the value according to the actual projector series.

Model Series	Throw Ratio
—	1.30-1.80:1

4. Confirm These Three Points Before Replacement

• Confirm the projector chipset and resolution. The original lens is designed for a specific panel size. With different panel specifications, the image circle cannot cover the full image, resulting in vignetting or light loss at the edges.
• Calculate the installation distance first. The rated throw ratio of this lens is 1.30-1.80:1. Use the table in Section 2 to apply it to your site dimensions; a fixed-focus lens offers no adjustment margin, and a zoom lens should also allow 10–20 cm of extra room at both ends.
• Check the mount and locking mechanism. The original lens is calibrated to the mount of that projector series, and you must hear it lock into place after installation. A skewed image and 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, then send them to us. Verification against the actual items is the safest approach.