WK100 Projector Lens 0.46:1 for 8 Appotronics Engineering Projectors

WK100 is a short-throw lens for the 0.65/0.66/0.67 panel group (Appotronics), featuring a 0.46:1 throw ratio and lens-shift capability. It is compatible with 8 models across 2 model series. This guide presents the lens specifications, installation distances, model compatibility list, and replacement considerations in one place.

1. Lens Specifications

Lens-shift capability is the key differentiator of this lens. Horizontal shift of 85.2% and vertical shift of 39.6% allow the projector to be installed off-center relative to the screen and the image repositioned through lens shift without relying on keystone correction. Keystone correction comes at a cost—each adjustment reduces the effective pixel count and can blur text edges. In professional installations, always use lens shift instead of keystone correction whenever possible; preserving image quality is essential.

2. Calculating Installation Distance from Throw Ratio

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

The values above represent the clear distance from the front of the lens to the screen and do not include space behind the chassis for cooling and cable connections. They are calculated for a 16:10 aspect ratio; actual values are subject to on-site measurements and the product manual.

3. Compatible Models (8 Models, Appotronics)

The following table is arranged from newest to oldest by model production date and includes the resolution, brightness, and factory-lens zoom ratio for each model, enabling quick identification according to project requirements.

The zoom ratio is the zoom factor of the factory-standard lens for each model (upper limit ÷ lower limit of the factory throw-ratio range), not the zoom range of the lens featured in this article.

Common Characteristics of These Models

The factory-standard lenses for the 8 models generally have throw ratios concentrated within 1.23-1.97. The 0.46:1 ratio of the lens featured in this article effectively changes the focal-length range, allowing the same projection distance to produce a different image size—this is the direct reason for replacing the lens. Full lens-shift capability is retained, so the image can still be aligned after adjusting the focal-length range.

4. Three Checks Before Replacement

• The panel and resolution must match. This model is compatible with a 0.67-inch panel. Projectors with different panel sizes or resolutions may exhibit different projection performance, so the safest approach is to verify the chassis nameplate before installation.
• Check the interfaces and locking mechanism. Interfaces are generally compatible within the same platform generation, but the position of the locking catch differs between generations. If the image appears skewed or the edges look soft after installation, the lock is usually not fully engaged rather than the lens itself being faulty.
• Factor lens-shift clearance into the installation. The shift range provides some installation flexibility, but edge image quality declines when it is pushed to the limit. We recommend keeping actual use within 70% of the nominal values.

For a model not on the list, the safest option is to send us a photo of the chassis nameplate and the original lens for verification. Although platforms from the same generation often share interfaces, ordering solely because the model names are similar carries unnecessary risk.