WE216 Projector Lens 0.52–0.64:1 for Hualu HL-E555U and 1 Engineering Model

WE216 is a short-throw lens for 0.64-inch panels (Hualu), with a 0.52–0.64:1 throw ratio and lens shift. It is compatible with 1 model from 1 model series. This article presents the lens specifications, installation distance, model compatibility list, and replacement considerations in one place.

I. Lens Specifications

Lens shift is the key differentiator of this lens. A shift range of ±18% horizontally and ±13% vertically allows the projector to be installed off the screen’s central axis, with lens shift used to reposition the image without relying on keystone correction. Keystone correction comes at a cost—each adjustment reduces the effective pixel resolution and blurs text edges. In professional installations, use lens shift whenever possible instead of keystone correction; this is the baseline for image quality.

II. Converting Throw Ratio to Installation Distance

The throw ratio is the ratio of installation distance to image width. This is a zoom lens (0.52–0.64:1), so a given image size corresponds to a range of installation distances, and the lens can be focused at any position within that range.

The distances above are the clear distances from the front of the lens to the screen and do not account for rear housing ventilation and cabling clearance. They are calculated for a 16:10 image aspect ratio; actual values are subject to on-site measurement and the manual.

Image quality varies at the two ends of the zoom range: toward the wide-angle end, the image is brighter but the edges are slightly softer; toward the telephoto end, the edges are sharper and brightness is slightly reduced. Where venue conditions allow, the middle of the range is recommended. After installation, first find the sharpest setting on the focus ring, then fine-tune the lens shift—adjusting both variables at the same time makes precise alignment difficult.

III. Compatible Models (1 Model, Hualu)

The following table is ordered by model production date, from newest to oldest. It includes each model’s resolution, brightness, and the zoom ratio of its original lens, making it easy to identify the right option for your project requirements.

The zoom ratio refers to the zoom factor of the model’s original standard lens (upper ÷ lower limits of the original throw ratio range), not the zoom range of the lens featured in this article.

Common Characteristics

The original standard lenses for this model group typically have throw ratios concentrated around 1.08-1.76. The 0.52–0.64:1 model featured here effectively adjusts the focal range, allowing different image sizes at the same projection distance—this is the direct reason for replacing the lens. It also retains full lens-shift capability, so the image can still be aligned after the focal range is adjusted.

IV. Three Checks Before Replacement

• The panel and resolution must match. This model is designed for 0.64-inch panels. Projectors with different panel sizes or resolutions will show some differences in projection performance; checking against the projector nameplate before installation is the safest approach.
• Check the interfaces and locking mechanism. Interfaces on platforms of the same generation generally offer good compatibility, but locking latch positions can differ between generations. If the image appears skewed or the edges remain soft after installation, the locking mechanism is usually not fully engaged, rather than the lens itself being faulty.
• Factor the shift margin into the installation. The shift range provides some installation flexibility, but edge image quality declines at the limits. Actual use should therefore be kept within 70% of the rated values.

For compatibility with a model not on the list, it is safer to send us the projector nameplate and a photo of the original lens for verification—platforms of the same generation often share interfaces, but ordering based only on a similar model number carries unnecessary risk.