WB013 Projector Lens 0.78–0.81:1 for Vivitek HX500, HX650S, HW600S and 12 Other Models

WB013 is a short-throw lens for 0.64-inch panels (YINGSHI), with a 0.78–0.81:1 throw ratio and lens shift. It is compatible with 15 projector models in 1 model series. This article presents the lens specifications, installation distances, model compatibility list, and replacement considerations all in one place.

I. Lens Specifications

Lens shift is the key differentiator of this lens. Its shift range of 76.00% horizontally and 47.70% vertically allows the projector to be installed off the screen's central axis while lens shift brings the image back into position, eliminating the need for keystone correction. Keystone correction comes at a cost—each adjustment sacrifices some effective pixels and blurs text edges. In professional installations, always use lens shift rather than keystone correction whenever possible; preserving image quality is the bottom line.

II. Throw Ratio Conversion and Installation Distance

The throw ratio is the ratio of the installation distance to the image width. This is a zoom lens (0.78–0.81:1), so each image size corresponds to a range of distances, and the lens can be focused at any position within that range during installation.

The values above represent the clear distance from the front of the lens to the screen and do not account for clearance behind the chassis for heat dissipation and cabling. They are calculated based on a 16:10 image; actual distances should be verified through on-site measurements and the manual.

Image quality differs at the two ends of the zoom range: at the short end, the image is brighter and the edges are slightly softer; at the long end, the edges are sharper and brightness is slightly lower. When the installation environment allows, use the middle of the range. After installation, first find the sharpest position using the focus ring, then fine-tune the lens shift—adjusting both variables at the same time makes precise alignment difficult.

III. Compatible Models (15 Models, YINGSHI)

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

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

Common Traits of These Models

The original standard lenses for most of the 15 models have throw ratios that fall mainly within the 1.16-1.9 range. The 0.78–0.81:1 model featured in this article effectively changes the lens focal range, allowing the same projection distance to produce a different image size—this is the direct reason for replacing the lens. It also retains full lens-shift capability, allowing the image to be realigned after the focal range is adjusted.

IV. Three Checks Before Replacement

• Confirm that the panel and resolution match. This model is compatible with 0.64-inch panels. Projectors with different panel sizes or resolutions will produce somewhat different projection results, so the most reliable approach is to verify the chassis nameplate before installation.
• Check the interface and locking mechanism. Interfaces are generally shared within the same platform generation, but the positions of the locking tabs vary between generations. If the image appears skewed or the edges are not sharp after installation, the lock is usually not fully engaged; this is not an issue with the lens itself.
• Allow for lens-shift margin in the installation. The shift range provides installation leeway, but image quality at the edges degrades when the lens is pushed to its limits. Keep actual lens shift within 70% of the specified values.

For models not on the list, it is safer to send us the chassis 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 carries unnecessary risk.