Christie 144-103105-01 HB Zoom Standard-Throw Lens for 11 Models

Christie Genuine Lens 144-103105-01 HB Zoom is an official optical accessory for Christie engineering projectors. It is a standard throw lens (Standard Throw) with a throw ratio of 1.13-1.31:1. The official compatibility list covers 11 models; before installation, simply verify the chassis model and panel size—there is no need to improvise with adapter rings. The value of a genuine lens lies not in the extra figures on a specification sheet, but in the fact that it is calibrated at the factory to the optical path and mount of that projector series. Once installed, image-circle coverage, edge illumination, and focus travel all meet the design specifications, so there is no need to use keystone correction to compensate for image quality.

1. Lens Specifications

Brand	Christie (Christie)
Lens Model	144-103105-01 HB Zoom
Throw Ratio	1.13-1.31:1
Product Type	Standard throw (Standard Throw)
Compatible Models	11 models
Warranty	12 months; damage not caused by the user is covered by after-sales service, based on the date on the shipping documents

Official specifications take precedence. Mechanical dimensions, flange distance, and mount type are not listed in the table; please check them with us using the chassis 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 genuine lens is a zoom lens (1.13-1.31:1), so a given image size corresponds to a range of installation distances. It can focus anywhere within that range.

Image Size	Image Width	Required Installation Distance
100 inches	2.15 m	approx. 2.43 – 2.82 m
120 inches	2.58 m	approx. 2.92 – 3.38 m
150 inches	3.22 m	approx. 3.64 – 4.22 m
200 inches	4.30 m	approx. 4.86 – 5.63 m

The distances shown are clear distances from the lens front surface to the screen and do not include space behind the chassis for heat dissipation or cable connections. They are calculated based on a 16:10 image; in practice, on-site measurements and the official manual take precedence.

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

3. Compatible Models (11 models)

The table below is taken from the official compatibility list. Brightness and resolution are populated from the model database; where they cannot be retrieved, the entry is marked with “—”, and no values are estimated.

Model	Brightness	Resolution
Boxer 2K20	—	—
Boxer 2K25	—	—
Boxer 2K30	—	—
Boxer 30	—	—
Boxer 4K20	—	—
Boxer 4K30	—	—
D4K40-RGB	40000 lumens	4096x2160
Mirage 304K	—	—
Mirage 4K40-RGB	—	—
Mirage SST	—	—
Roadie 4K40-RGB	—	—

For models not included in the list, please send us photos of the chassis nameplate and the existing lens so we can verify compatibility. Platforms of the same generation often share the same mount, but ordering based on a similar model is not worth the risk.

Throw Ratios by Model Series

The nominal throw ratio varies by projector series when the same 144-103105-01 HB Zoom lens is used, so select the value based on the series of the actual chassis.

Model Series	Throw Ratio
—	1.13-1.31:1

4. Three Checks Before Replacement

• Confirm the chassis imaging chip and resolution. The genuine lens is designed for a specific imaging panel size. If the panel specifications differ, the image circle cannot cover the full image, resulting in vignetting or edge light falloff.
• Calculate the installation distance first. With a nominal throw ratio of 1.13-1.31:1 for this lens, use the table in Section 2 to calculate the distance for your site. Fixed-focus lenses offer no adjustment margin, and zoom lenses should also allow an additional 10–20 cm at both ends of the range.
• Verify the mount and locking mechanism. The genuine lens is calibrated to the mount of that projector series and must audibly click into the locked position after installation. A skewed image or soft edges are most often due to incomplete locking, not to the lens itself.

If you are unsure, send us one photo each of the chassis nameplate and the existing lens nameplate. Verification against the actual hardware is the safest approach.