Appotronics AL-120MA Zoom Long-Throw Lens: Compatible with Projection E-Vision 22000i 4K+

Appotronics Genuine Lens AL-120MA Zoom is a factory-original optical accessory for Appotronics professional projectors. It is a Long Throw lens with a throw ratio of 1.20-2.30:1. The factory compatibility list covers 1 model. Before installation, simply verify the projector model and panel size; no adapter rings are needed. The value of a genuine lens lies not in the extra figures on the 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, the image circle, edge illumination, and focus travel are all set to their design values, eliminating the need to use keystone correction to compensate for image quality.

I. Lens Specifications

Brand	Appotronics (Appotronics)
Lens Model	AL-120MA Zoom
Throw Ratio	1.20-2.30:1
Product Type	Long Throw
Compatible Models	1 model
Warranty	12 months; after-sales service is available for damage not caused by the user, based on the date shown on the shipping invoice

The above specifications are subject to the factory specifications. Mechanical dimensions, flange distance, and mount type are not listed in the specification table; please verify them with our team using the projector model. Ordering solely on the basis of a similar model carries the risk that the lens will not fit.

II. 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 (1.20-2.30:1), so a given image size corresponds to a range of installation distances. It can focus at any position within that range.

Image Size	Image Width	Required Installation Distance
100 inches	2.15 m	Approximately 2.58 – 4.94 m
120 inches	2.58 m	Approximately 3.10 – 5.93 m
150 inches	3.22 m	Approximately 3.87 – 7.42 m
200 inches	4.30 m	Approximately 5.16 – 9.89 m

These are net distances from the front surface of the lens to the screen, without allowing for cooling and wiring space at the rear of the projector. The figures are calculated for a 16:10 image; actual distances should be verified through on-site measurement and in accordance with the factory manual.

Image quality varies 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 is slightly lower. Where the venue allows, use the middle of the range. After installation, find the sharpest position on the focus ring and then fine-tune the lens shift.

III. Compatible Models (1 model)

The following table is taken from the factory compatibility list. Brightness and resolution are populated from the model database; unavailable data is shown as “—” and has not been inferred.

Model	Brightness	Resolution
Projection E-Vision 22000i 4K+	—	—

To verify whether a model outside the list is compatible, send us photographs of the projector nameplate and current lens. Projector platforms of the same generation often share the same mount, but ordering based solely on a similar model carries unnecessary risk.

Throw Ratios by Projector Series

The rated throw ratio varies by series when the same AL-120MA Zoom is used. Select the value according to the series of the actual projector.

Model Series	Throw Ratio
—	1.20-2.30:1

IV. 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 image, resulting in vignetting or edge light loss after installation.
• Calculate the installation distance first. This lens has a rated throw ratio of 1.20-2.30:1. Use the table in Section II to calculate the distance for your venue. A fixed-focus lens offers no adjustment margin, while a zoom lens should still allow an additional 10–20 cm at both ends.
• Verify the mount and locking mechanism. Genuine lenses are calibrated to the mount of the corresponding projector series. You must hear the lens click into the locked position after installation. A skewed image and soft edges are usually caused by incomplete locking rather than a problem with the lens itself.

If you are unsure, photograph the projector nameplate and the nameplate of the current lens, and send both to us. Verification against the physical products is the most reliable approach.