JVC GLMZ-4014SZG Zoom Long-Throw Projector Lens Guide for DLA-VS4600

JVC Genuine Lens GLMZ-4014SZG Zoom is an OEM optical accessory for JVC professional projectors. It is a long-throw (Long Throw) lens with a throw ratio of 1.27-2.54:1. The OEM compatibility list covers 1 model. Before installation, simply verify the projector model and panel size—no adapter rings are needed. The value of an OEM lens lies not in the additional figures in the specification sheet, but in the fact that it is calibrated at the factory to the optical path and mount of the projector series. Once installed, the image circle, edge illumination, and focus travel all operate at their design values, eliminating the need to compensate for image quality with keystone correction.

1. Lens Specifications

The above specifications are based on the OEM specifications. Mechanical dimensions, flange distance, and mount type are not listed in the specifications above. Please provide the projector model when contacting us; ordering solely based on a similar model carries the risk that the lens will not fit.

2. Calculating Installation Distance from Throw Ratio

The throw ratio is the ratio of the installation distance to the projected image width. This OEM lens is a zoom lens (1.27-2.54:1), so the same image size corresponds to a range of installation distances. The lens can focus at any position within this range.

The distances above are the clear distance from the front of the lens to the screen and do not include space for rear cooling and cable connections. These figures are based on a 16:10 image; actual on-site measurements and the OEM manual take precedence.

Image quality varies at the two ends of the zoom range: images are brighter but slightly less sharp at the edges near the near end, while edges are more defined but slightly dimmer near the far end. If space permits, use the middle of the range. After installation, find the sharpest setting on the focus ring, then fine-tune the lens shift.

3. Compatible Models (1 Model)

The following table is taken from the OEM compatibility list. Brightness and resolution are populated from the projector model database; values that cannot be obtained are marked with “—” and are not estimated.

To check whether a model outside the list is compatible, send us photos of the projector nameplate and your existing lens. Same-generation platforms often share the same mount, but ordering based solely on model similarity is not worth the fitment risk.

Throw Ratios by Model Series

The nominal throw ratio varies by projector series when the same GLMZ-4014SZG Zoom is installed. Select the value according to the series of the actual projector.

4. Three Checks Before Replacement

• Confirm the projector imaging chip and resolution.OEM lenses are designed for a specific panel size. If the panel specifications differ, the image circle cannot cover the full image, resulting in vignetting or edge light loss.
• Calculate the installation distance first.The nominal throw ratio of this lens is 1.27-2.54:1. Use the table in Section 2 to calculate the distance for your venue. A fixed-focus lens has no adjustment margin; even with a zoom lens, allow a 10–20 cm margin at both ends of the range.
• Verify the mount and locking mechanism.The OEM lens is calibrated to the mount of that projector series. You must hear it lock into place after installation. A skewed image or soft edges usually indicate that the lock is not fully engaged, rather than a problem with the lens itself.

If you are unsure, take one photo of the projector nameplate and one photo of the current lens nameplate and send them to us. Verification against the physical products is the safest approach.