Vivitek GB942G Short Zoom Standard-Throw Lens for D5500 D5510 D6010 D6510

Vivitek OEM Lens GB942G Short Zoom is an OEM optical accessory for Vivitek professional projectors. It features a standard throw (Standard Throw), a throw ratio of 1.33-1.79:1, and is designed for D/H Engineering·Cinema Series panels in inches. The OEM compatibility list covers 4 models; before installation, simply verify the projector model and panel size—no need to resort to an adapter ring. The value of an OEM lens lies not in the extra figures in the specification table, but in its factory calibration to the optical path and mount of projectors in this series. Once installed, the image circle, edge illumination, and focusing travel all meet their design values, with no need to use keystone correction to compensate for image quality.

1. Lens Specifications

The above specifications are subject to the OEM specifications. For mechanical dimensions, flange distance, and mount format not shown in the specifications table, please contact us with the projector model. Ordering directly based on a similar model carries the risk that the lens will not fit.

2. Calculating Installation Distance from the Throw Ratio

The throw ratio is the ratio of the installation distance to the image width. This OEM lens is a zoom lens (1.33-1.79:1), so a given image size corresponds to a range of distances. It can focus at any installation distance within that range.

The distances above are the clear distances from the lens front surface to the screen and do not include clearance behind the projector for ventilation and cable connections. These figures are calculated for a 16:10 image; in practice, follow on-site measurements and the OEM manual.

Image quality differs at the two ends of the zoom range: at the near end, the image is brighter and the edges are slightly softer; at the far end, the edges are sharper and brightness is slightly lower. If venue conditions permit, target the middle of the range. After installation, first find the sharpest position using the focus ring, then fine-tune the lens shift.

3. Compatible Models (4 Models)

The table below is taken from the OEM compatibility list. Brightness and resolution are populated from the model database; where the data is unavailable, “—” is shown rather than estimated.

For models not listed, please send us photos of the projector nameplate and the existing lens so we can verify compatibility—platforms of the same generation often share a mount, but ordering based on a similar model is not worth the risk.

Throw Ratios by Model Series

The rated throw ratio of the same GB942G Short Zoom lens varies across the series listed below. Select the value according to the series of the actual projector.

4. Three Checks Before Replacement

• The panel size must match. GB942G Short Zoom is designed for D/H Engineering·Cinema Series panels in inches. For projectors with a different panel size or resolution, even if the mount fits, the image circle and edge illumination may be affected.
• Calculate the installation distance first. This lens has a rated throw ratio of 1.33-1.79:1. Use the table in Section 2 to calculate the distance for your venue; a fixed-focus lens offers no adjustment margin, and even a zoom lens needs 10–20 cm of clearance at both ends.
• Check the mount and locking mechanism. The OEM lens is calibrated to the mount of projectors in this series, and you must hear the lock engage fully after installation. A skewed image or soft edges are usually caused by incomplete locking rather than the lens itself.

If you are unsure, send us one photo each of the projector nameplate and the nameplate on the existing lens. Verification against the actual items is the safest approach.