WK092 0.413:1 Projector Lens for Leli RL-10KU, RL-85U, RL-K1, RL-KU1200

WK092 is a short-throw lens for 0.76-inch panels (RELIGHT), with a 0.413:1 throw ratio and lens shift. It is compatible with 4 projector models in 1 model series. This guide presents the lens specifications, installation distances, model compatibility list, and key replacement considerations all in one place.

I. Lens Specifications

Lens shift is the key differentiator of this lens. The 47.5% horizontal and 20.8% vertical shift range allows the projector to be installed off the screen centerline and the image to be repositioned using lens shift, eliminating the need for keystone correction. Keystone correction comes at a cost—each adjustment reduces the effective pixel count and softens text edges. In professional installations, keystone correction should never be used when lens shift can achieve the required alignment; this is the minimum standard for image quality.

II. Calculating Installation Distance from Throw Ratio

The throw ratio is the ratio of installation distance to image width. This is a fixed-focal-length lens (0.413:1), so the installation distance varies linearly with image size and offers no adjustment margin. Accurate measurements are essential before installation.

The values above are the clear distance from the front face of the lens to the screen and do not account for space needed for rear projector ventilation or cable connections. They are calculated for a 16:10 image; actual values must be verified through on-site measurements and the manual.

III. Compatible Models (4 Models, RELIGHT)

The following table is ordered from newest to oldest by model production date and lists the resolution, brightness, and original lens zoom ratio of each model, allowing quick selection based on project requirements.

The zoom ratio is the zoom factor of the model's original standard lens (upper limit ÷ lower limit of the original throw ratio range), not the zoom range of the lens featured in this article.

Common Features of These Models

The original standard lenses for these 4 models mostly fall within the 1.42-2.64:1 throw ratio range. The 0.413:1 ratio of the model featured here effectively adjusts the focal range, allowing the same projection distance to produce different image sizes—this is the direct reason for replacing the lens. It also retains full lens-shift capability, so the image can still be aligned after adjusting the focal range.

IV. Three Checks Before Replacement

• Match the panel and resolution. This model is compatible with 0.76-inch panels. Projectors with different panel sizes or resolutions may produce somewhat different results; checking the nameplate on the projector before installation is the safest option.
• Check the interface and locking mechanism. Interfaces are generally compatible across platforms of the same generation, but the locking clip position varies between generations. If the image is skewed or the edges look soft after installation, the lock is usually not fully engaged; this is not an issue with the lens itself.
• Factor lens-shift margin into the installation. The shift range provides installation flexibility, but edge image quality declines when the lens is pushed to its limit. In practice, keep the actual shift within 70% of the rated value.

For compatibility with a model not listed, the safest option is to send us the projector nameplate and a photo of the original lens for verification. Same-generation platforms often share the same interface, but ordering based on a similar model designation carries unnecessary risk.