Appotronics AL-TL070FR Fixed Short-Throw Projector Lens

Appotronics Genuine Lens AL-TL070FR Fixed is an original optical accessory for Appotronics engineering projectors. It is a short-throw (Short Throw) lens with a throw ratio of 0.70:1. The value of a genuine lens lies not in the extra figures in its specification sheet, but in the fact that it is factory-calibrated to the optical path and mount of that projector series: once installed, the image circle, edge illumination, and focusing travel all meet the design values, eliminating the need to use keystone correction to compensate for image quality.

I. Lens Specifications

The above specifications are subject to the original manufacturer’s specifications. For mechanical dimensions, flange distance, and mount type not shown in the specification table, please verify them against your projector model with us. 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 has a fixed focus (0.70:1), so the installation distance varies linearly with the image size, with no adjustment margin. Accurate measurements are therefore essential before installation.

The above distances are clear distances from the front of the lens to the projection screen and do not include clearance behind the projector for heat dissipation and cable connections. They are calculated for a 16:10 aspect ratio; actual values must be confirmed through on-site measurement and the original manufacturer’s manual.

III. Compatible Models

The original manufacturer’s model compatibility list for this model has not yet been added. You can provide your projector model, and we will verify compatibility.

Throw Ratios by Model Series

When the same AL-TL070FR Fixed lens is installed on the following series, the nominal throw ratio varies. Select the value based on the series of the actual projector.

IV. Three Checks Before Replacement

• Check the projector panel and resolution. The genuine lens is designed for a specific panel size. If the panel specifications differ, the image circle cannot cover the full image, resulting in vignetting or light loss at the edges after installation.
• Calculate the installation distance first. This lens has a nominal throw ratio of 0.70:1. Use the table in Section II to calculate the distance based on the actual dimensions of your installation site. As a fixed-focus lens, it has no adjustment margin; even when using a zoom lens, allow 10–20 cm at both ends.
• Verify the mount and locking mechanism. The genuine lens is calibrated to the mount of projectors in that series. After installation, you must hear it click into the fully locked position. A skewed image or soft edges are usually caused by incomplete locking rather than a problem with the lens itself.

If you are unsure, take one photo of the projector nameplate and one photo of the current lens nameplate, then send them to us. Verification against the physical items is the most reliable approach.