Vivitek SS-5811141776-VV Semi Long Zoom Projector Lens: Compatible with DK10000Z, DK8500Z-BK

Vivitek Original Lens SS-5811141776-VV Semi Long Zoom is a genuine optical accessory for Vivitek engineering projectors. It is a long-throw lens with a throw ratio of 2.50-4.70:1, designed for DK series (laser engineering) inch panels. The original compatibility list covers 3 projector models; before installation, simply verify against the projector model and panel size—no adapter rings needed. The value of an original lens isn't a few extra rows of numbers on 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 are all at their design values, with no need to compensate image quality using keystone correction.

1. Lens Specifications

Brand	Vivitek (Vivitek)
Lens Model	SS-5811141776-VV Semi Long Zoom
Throw Ratio	2.50-4.70:1
Product Type	Long Throw
Compatible Panel	DK series (laser engineering) inch
Compatible Models	3 units
Warranty	12 months; after-sales service available for non-human damage, based on the date on the shipping document

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 the projector model—ordering based on model similarity alone 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 (2.50-4.70:1), so the same image size corresponds to a range of distances; as long as installation falls within this range, focus can be achieved.

Image Size	Image Width	Required Installation Distance
100 inch	2.15 m	Approx. 5.38 – 10.11 m
120 inch	2.58 m	Approx. 6.45 – 12.13 m
150 inch	3.22 m	Approx. 8.06 – 15.16 m
200 inch	4.30 m	Approx. 10.75 – 20.21 m

The above figures are the clear distance from the lens front to the screen, excluding rear ventilation and cabling space behind the projector body. Calculated for 16:10 aspect ratio; actual values are subject to on-site measurement and the original manufacturer's 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. Where 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 (3 units)

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.

Model	Brightness	Resolution
DK10000Z	10000 lumens	4K (3840 x 2160)
DK8500Z-BK	7500 lumens	3840x2160
DK8500Z-WH	7500 lumens	3840x2160

To check whether models outside the list can be used, please send us photos of the projector nameplate and the existing lens for verification—same-generation platforms often share mounts, but the risk of ordering based on model similarity alone is not worth it.

Throw Ratios Across Model Series

The same SS-5811141776-VV Semi Long Zoom installed on the following series has different nominal throw ratios; selection should be based on the actual series of the projector body.

Model Series	Throw Ratio
—	2.50-4.70:1

4. Three Things to Confirm Before Replacement

• Panel size must match. The SS-5811141776-VV Semi Long Zoom is designed for DK series (laser engineering) inch panels. Machines with different panel sizes or resolutions may experience image circle and edge illumination issues even if the mount fits.
• Calculate installation distance first. This lens has a nominal throw ratio of 2.50-4.70:1; use the table in Section 2 to determine the distance for your venue size. 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 and soft edges are usually caused by incomplete locking, not by 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 most reliable approach.