Vivitek D86-1216 Semi Short Zoom Standard Throw Projector Lens: Compatible with DU7099Z+

Vivitek Original Lens D86-1216 Semi Short Zoom is a genuine optical accessory for Vivitek engineering projectors. It belongs to the standard throw category, with a throw ratio of 1.25-1.60:1, and is designed for DU/DW/DX engineering series panels. The original compatibility list covers 10 models; before installation, simply verify against the projector model and panel size—no adapter rings needed. The value of an original lens isn't about extra rows of numbers in a spec sheet, but that it is calibrated at the factory to the optical path and mount of that series: once installed, the image circle, edge illumination, and focus travel all match design values, so you don't need keystone correction to compensate for image quality.

1. Lens Specifications

The above specifications are subject to the original manufacturer's specifications. For mechanical dimensions, flange focal distance, and mount type not shown in the spec table, please verify with us against your projector model—ordering based on similar model numbers carries the risk of incompatibility.

2. Converting Throw Ratio to Installation Distance

Throw ratio is the ratio of installation distance to image width. This original lens is a zoom lens (1.25-1.60:1), so the same image size corresponds to a range of distances; as long as installation falls within this range, focus can be achieved.

The above figures are the clear distance from the lens front to the screen, excluding rear ventilation and cabling space. Calculated for 16:10 aspect ratio; actual values are subject to on-site measurement and the original manual.

Image quality differs at the two ends of the zoom range: toward the near end the image is brighter with slightly softer edges; toward the far end the edges are sharper with slightly reduced brightness. If space permits, it is recommended to land in the middle of the range; after installation, first find the sharpest position on the focus ring, then fine-tune the shift.

3. Compatible Models (10)

The table below is taken from the original compatibility list; brightness and resolution are filled in from the model database, with "—" where unavailable, without speculation.

To determine whether models outside the list are compatible, please send us photos of the projector nameplate and the existing lens for verification—same-generation platforms often share mounts, but ordering based on similar model numbers is not worth the risk.

Throw Ratios Across Model Series

The same D86-1216 Semi Short Zoom installed on the following series has different nominal throw ratios; selection should be based on the actual series of the projector.

4. Three Things to Confirm Before Replacement

• Panel size must match. The D86-1216 Semi Short Zoom is designed for DU/DW/DX engineering series inch panels. For projectors with different panel sizes or resolutions, even if the mount fits, the image circle and edge illumination will be problematic.
• Calculate installation distance first. This lens has a nominal throw ratio of 1.25-1.60:1; apply it to your venue dimensions using the table in Section 2. Prime lenses have no margin, and even zoom lenses should leave 10–20 cm at both ends.
• Verify the mount and locking. The original lens is calibrated to the mount of that series; after installation, you must hear it lock into place. Image skew or soft edges are mostly due to incomplete locking, not the lens itself.

If unsure, take a photo of the projector nameplate and the existing lens nameplate and send them to us—verification against the actual hardware is the safest approach.