Appotronics AL-TL160LZ Long Zoom Lens Guide: Fits AL-TU22KA and AL-TU26KA

Appotronics Genuine Lens AL-TL160LZ Long Zoom is an original optical accessory for Appotronics professional projectors. It is a long-throw lens (Long Throw) with a throw ratio of 1.60-2.29:1. The official compatibility list covers 2 models; before installation, simply verify the projector model and panel size—there is no need to make do with an adapter ring. The value of a genuine lens lies not in the extra rows of specifications, but in the fact that it is calibrated at the factory to the optical path and mount of that model series: once installed, the image circle, edge illumination, and focusing travel all meet their design values, eliminating the need to use keystone correction to compensate for image quality.

1. Lens Specifications

These specifications are subject to the manufacturer's official specifications. For mechanical dimensions, flange distance, and mount type not listed in the table, please provide your projector model so we can verify them. Ordering solely because the model numbers are similar carries the risk that the lens will not fit.

2. Calculating Installation Distance from Throw Ratio

The throw ratio is the ratio of the installation distance to the image width. This genuine zoom lens (1.60-2.29:1) provides a range of installation distances for a given image size, and it can focus at any distance within that range.

These figures represent the clear distance from the front of the lens to the screen and do not account for rear cooling clearance or cable connection space behind the projector. They are calculated for a 16:10 image; actual distances should be verified on site and are subject to the manufacturer's manual.

Image quality differs at the two ends of the zoom range: near the close end, the image is brighter and the edges are slightly softer; near the far end, the edges are sharper and brightness decreases slightly. Where site conditions allow, using the middle of the range is recommended. After installation, first find the sharpest image by adjusting the focus ring, then fine-tune the lens shift.

3. Compatible Models (2 Models)

The following table is taken from the manufacturer's compatibility list. Brightness and resolution are supplemented from the model database; where the data is unavailable, “—” is shown without making assumptions.

To check whether a model outside the list is compatible, send us a photo of the projector nameplate and the existing lens. Projectors based on the same platform generation often share the same mount, but it is not worth the risk of ordering based only on a similar model number.

Throw Ratios for Different Model Series

When the same AL-TL160LZ Long Zoom lens is installed on the series listed below, the rated throw ratio differs. Select the value according to the actual projector series.

4. Three Checks Before Replacement

• Confirm the projector chip and resolution. The genuine lens is designed for a specific panel size. With different panel specifications, the image circle cannot cover the full frame, resulting in vignetting or edge light loss after installation.
• Calculate the installation distance first. The rated throw ratio of this lens is 1.60-2.29:1; apply the table in Section 2 to the dimensions of your installation site. A fixed-focus lens provides no adjustment margin, while a zoom lens should still 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 model series, and you must hear it lock fully into place after installation. A skewed image or soft edges usually indicate that the lens is not fully locked, rather than a problem with the lens itself.

If you are unsure, send us one photo each of the projector nameplate and the nameplate on the existing lens; verifying against the actual hardware is the safest approach.