WK201 Projector Lens 0.46:1 for Optoma ZK1050, ZK750 and 2 Engineering Models

WK201 is a short-throw lens for 0.65/0.66/0.67 panels (Optoma), with a 0.46:1 throw ratio and lens shift. It is compatible with 2 projector models across 1 model series. This article presents the lens specifications, installation distance, model compatibility list, and replacement key points all in one place.

1. Lens Specifications

Lens shift capability is the key differentiator of this lens. With a shift range of 85.2% horizontally and 39.6% vertically, the projector can be installed off-center from the screen's centerline and the image can be brought back into alignment using lens shift, without relying on keystone correction. Keystone correction comes at a cost—each correction step sacrifices some effective pixels, leaving text edges blurred. In professional installations, always use lens shift instead of keystone correction whenever possible; this is the image-quality baseline.

2. Calculating Installation Distance from Throw Ratio

The throw ratio is the ratio of installation distance to image width. This lens is a prime (fixed-focal-length) lens (0.46:1), so the installation distance changes linearly with image size, leaving no room for adjustment. Accurate measurements are essential before installation.

The figures above represent the clear distance from the lens front face to the screen and do not include clearance behind the chassis for heat dissipation and cable connections. They are calculated for a 16:10 image aspect ratio; actual values are subject to on-site measurements and the manual.

3. Compatible Models (2 Models, Optoma)

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

Common Features of These Models

The factory standard lenses for these 2 models mostly have throw ratios listed as Depends on the lens. The 0.46:1 model featured in this article effectively adjusts the focal length, allowing the same projection distance to produce a different image size—which is the direct reason for replacing the lens. It also retains the full lens shift capability, so the image can still be aligned after the focal length is adjusted.

4. Confirm Three Things Before Replacement

• Make sure the panel and resolution match. This model is compatible with 0.67 inches panels. Projectors with different panel sizes or resolutions will display some differences in projection performance; for the most reliable match, verify against the chassis nameplate before installation.
• Check the interface and locking mechanism. Interfaces are generally compatible within the same platform generation, but the position of the locking latch varies between generations. If the image appears skewed or the edges look soft after installation, the latch is usually not fully engaged, rather than the lens itself being faulty.
• Allow for lens shift headroom in the installation. The shift range provides some installation flexibility, but edge image quality degrades when the range is pushed to its limits. We recommend keeping actual use within 70% of the specified values.

To confirm whether an unlisted model is compatible, it is safer to send us the chassis nameplate and photos of the original lens for verification—same-generation platforms often share interfaces, but ordering solely because the model names are similar carries unnecessary risk.