Appotronics AL-TL200LZ Zoom Long-Throw Projector Lens

Appotronics Genuine Lens AL-TL200LZ Zoom is an original optical accessory for Appotronics engineering projectors. It is a long-throw lens (Long Throw) with a throw ratio of 2.00-4.10:1. 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 lens mount of that projector series: once installed, the image circle, edge illumination, and focusing travel all meet the design specifications, with no need to use keystone correction to compensate for image quality.

I. Lens Specifications

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

II. Converting Throw Ratio into Installation Distance

The throw ratio is the ratio of the installation distance to the image width. This genuine lens is a zoom lens (2.00-4.10:1), so a given image size corresponds to a range of distances, and the lens can focus at any distance within that range during installation.

These figures represent the clear distance from the front surface of the lens to the screen and do not include clearance for rear ventilation or cable connections. The distances are calculated for a 16:10 image; actual values should be verified on site and according 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 the venue allows, use a position around the middle of the range. After installation, first find the sharpest setting using the focus ring, then fine-tune the lens shift.

III. Compatible Projector Models

The manufacturer's compatibility list for this model has not yet been added to our records. You can provide your projector model so that we can verify compatibility.

Throw Ratios by Projector Series

The stated throw ratio varies by series when the same AL-TL200LZ Zoom is installed on the following series. When selecting a lens, use the value for the series of the projector you actually have.

IV. Three Things to Confirm Before Replacement

• Confirm the projector chip and resolution. The genuine lens is designed for a specific panel size. If the panel specification differs, the image circle cannot cover the full image, resulting in vignetting or reduced illumination at the edges after installation.
• Calculate the installation distance first. This lens has a rated throw ratio of 2.00-4.10:1. Use the table in Section II to calculate the distance for your venue. A fixed-focus lens provides no adjustment margin, and even a zoom lens requires 10–20 cm of clearance at both ends.
• Verify the lens mount and locking mechanism. The genuine lens is calibrated to the lens mount of that projector series. You must hear it lock into place after installation. A skewed image or soft edges are usually caused by incomplete locking, rather than by a problem with the lens itself.

If you are unsure, take one photo of the projector nameplate and one photo of the nameplate on your current lens, then send both to us. Checking against the actual products is the safest approach.