WF203 Projector Lens 0.5:1 for NEC NP-CS5500HL and 1 Other Model

WF203 is a short-throw lens designed for the 0.65/0.66/0.67 panel group (NEC), with a 0.5:1 throw ratio. It is compatible with 1 projector 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

II. Calculating Installation Distance from Throw Ratio

The throw ratio is the ratio of the installation distance to the image width. This is a fixed-focal-length lens (0.5:1), so the installation distance varies linearly with the image size, leaving no room for adjustment. Accurate measurements are essential before installation.

These figures represent the clear distance from the front of the lens to the screen and do not account for ventilation and cable-management space at the rear of the chassis. Calculations are based on a 16:10 image; actual values are subject to on-site measurements and the manual.

III. Compatible Models (1 Model, NEC)

The following table is arranged from newest to oldest by model production date and includes each model’s resolution, brightness, and original lens zoom ratio for quick reference based on project requirements.

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

Common Characteristics of This Model

The original standard lens for this model typically has a throw ratio in the 1.4-2.24 range. The 0.5:1 ratio of the model featured here effectively changes the focal range, allowing a different image size from the same projection distance—the direct reason for replacing the lens. Full lens-shift capability is retained, so the image can still be aligned after adjusting the focal range.

IV. Three Checks Before Replacement

• Match the panel and resolution. This model supports a 0.65-inch panel. Projectors with a different panel size or resolution may show differences in projection performance, so checking the chassis nameplate before installation is the safest approach.
• Check the interface and locking mechanism. Interfaces are generally compatible across platforms of the same generation, but the positions of the locking latches vary by generation. If the image appears skewed or the edges look soft after installation, the lock is usually not fully engaged; this is not an issue with the lens itself.
• A fixed focal length leaves no room for zoom adjustment. The image size can only be changed by moving the projector, so the site dimensions must be measured accurately, with an additional 10–20 cm allowed at each endpoint.

For models not included in the list, the safest approach is to send us the chassis nameplate and a photo of the original lens for verification. Platforms of the same generation often share the same interface, but placing an order based solely on a similar model designation carries unnecessary risk.