WK091 0.46:1 Projector Lens for 5 Appotronics Models: AL-FU715, FU10K, FU805, FU705, FU905

WK091 is a short-throw lens for the 0.65/0.66/0.67 panel group (Appotronics), with a 0.46:1 throw ratio and lens shift. It is compatible with 5 models across 1 model series. This article presents the lens specifications, installation distances, model compatibility list, and replacement considerations in one place.

1. Lens Specifications

Lens shift is the key distinguishing feature of this lens. The shift range of 85.2% horizontal and 39.6% vertical allows the projector to be installed off the screen’s central axis, with lens shift used to reposition the image without keystone correction. Keystone correction comes at a cost—each adjustment reduces the effective pixel count and can blur text edges. In engineering installations, never use keystone correction when lens shift can resolve the issue; preserving image quality is essential.

2. Converting Throw Ratio to Installation Distance

The throw ratio is the ratio of installation distance to image width. This lens has a fixed focus (0.46:1), so installation distance varies linearly with image size, with no adjustment margin. Accurate measurements are essential before installation.

The distances above are the clear distances from the front of the lens to the screen and do not account for rear chassis cooling and cable-management space. These figures are based on a 16:10 image; actual installation should be verified through on-site measurements and the manual.

3. Compatible Models (5 Models, Appotronics)

The table below is ordered by model production date, from newest to oldest, and lists each model’s resolution, brightness, and factory-lens zoom ratio for quick selection according to project requirements.

Common Features of These Models

For the factory-standard lenses on these 5 models, the throw ratio generally Depends on the lens. The 0.46:1 model featured in this article provides an adjusted focal range, enabling different image sizes at the same projection distance—this is the direct reason for replacing the lens. It also retains full lens-shift capability, so the image can still be realigned after the focal range is adjusted.

4. Three Checks Before Replacement

• Confirm the panel and resolution match. This model is compatible with a 0.67-inch panel. Projectors with a different panel size or resolution may produce different projection performance, so check the nameplate on the chassis before installation.
• Check the interface and locking mechanism. Interfaces are generally compatible within the same platform generation, but the position of the locking tabs can vary by generation. If the image appears skewed or the edges are not sharp after installation, the lock is usually not fully engaged rather than the lens itself being faulty.
• Allow for shift margin during installation. The shift range provides installation flexibility, but image quality at the edges degrades when the lens is shifted to its limit. Keep actual use within 70% of the rated values.

For reliable confirmation of compatibility with models not on the list, send us a photo of the projector nameplate and the original lens. Models on the same platform generation often share interfaces, but ordering based only on a similar model number carries unnecessary risk.