WE552 Projector Lens 0.5–0.6:1 for Winmate C-4K900 and 1 Other Engineering Projector

WE552 is a short-throw lens for 0.65/0.66/0.67 panels (WINMATE), with a 0.5–0.6:1 throw ratio and lens shift. It is compatible with 1 model from 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 differentiator of this lens. A shift range of ±35% horizontally and ±10% vertically allows the projector to be installed off the screen's central axis, with lens shift bringing the image back into alignment without requiring keystone correction. Keystone correction comes at a cost—each correction level sacrifices some effective pixels and makes text edges appear soft. In engineering installations, never use keystone correction when lens shift can solve the alignment; preserving image quality is the baseline requirement.

2. Calculating Installation Distance from Throw Ratio

The throw ratio is the ratio of the installation distance to the image width. This is a zoom lens (0.5–0.6:1), so each image size corresponds to a range of installation distances. The lens can be focused at any point within that range during installation.

The distances above are clear distances from the front of the lens to the screen and do not include space behind the chassis for cooling and wiring. Calculated for a 16:10 image; actual on-site measurements and the manual take precedence.

Image quality differs at the two ends of the zoom range: the image is brighter with slightly softer edges near the short end, while the edges are sharper and brightness is slightly lower near the long end. When site conditions allow, target the middle of the range. After installation, first find the sharpest setting on the focus ring, then fine-tune the lens shift—adjusting both at the same time makes precise alignment difficult.

3. Compatible Models (1 Model, WINMATE)

The table below is arranged by model production date from newest to oldest and lists each model's resolution, brightness, and zoom ratio for the original factory lens, making it easy to identify the appropriate option for each project.

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

Common Traits of These Models

The original standard lenses for this group of models generally have throw ratios centered around 1.4-2.5:1. The 0.5–0.6:1 ratio of the model in this article effectively changes the focal-length range, allowing different image sizes at the same projection distance—this is the direct reason for replacing the lens. At the same time, full lens-shift capability is retained, so the image can still be aligned after the focal range is adjusted.

4. Three Checks Before Replacement

• Panel size and resolution must match. This model is designed for a 0.67-inch panel. Projectors with a different panel size or resolution will show some differences in projection performance; checking the chassis nameplate before installation is the safest approach.
• Interfaces and locking mechanism. Interfaces are generally interchangeable across platforms of the same generation, but the positions of locking tabs vary between generations. If the image appears skewed or the edges look soft after installation, the most likely cause is incomplete locking rather than a problem with the lens itself.
• Account for lens-shift margin in the installation. The shift range provides some installation flexibility, but edge quality declines when it is pushed to the limit. In practice, keep shift usage within 70% of the specified values.

For models not on the list, the safest approach is to send us the chassis nameplate and a photo of the original lens for verification. Same-generation platforms often share interfaces, but ordering solely based on similar model names poses unnecessary risk.