Vivitek D86-04705 Short Zoom 1 Short-Throw Projector Lens: Compatible with DU7099Z+, DU7099Z-BK

Vivitek Original Lens D86-04705 Short Zoom 1 is a genuine optical accessory for Vivitek engineering projectors. It is a short-throw lens with a throw ratio of 0.47-0.50:1, designed for DU/DW/DX engineering series panels. The original compatibility list covers 8 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 factory-calibrated to the optical path and mount of that series: once installed, the image circle, edge illumination, and focus travel are all at design values, so you don't need keystone correction to compensate for image quality.

1. Lens Specifications

Brand	Vivitek
Lens Model	D86-04705 Short Zoom 1
Throw Ratio	0.47-0.50:1
Product Type	Short Throw
Compatible Panel	DU/DW/DX engineering series inches
Covered Models	8 units
Warranty	12 months; non-human damage eligible for after-sales service, 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 your projector model—ordering based on similar model numbers carries the risk of incompatibility.

2. Throw Ratio Conversion for Installation Distance

The throw ratio is the ratio of installation distance to image width. This original lens is zoom (0.47-0.50:1), 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 inches	2.15 m	Approx. 1.01 – 1.07 m
120 inches	2.58 m	Approx. 1.21 – 1.29 m
150 inches	3.22 m	Approx. 1.52 – 1.61 m
200 inches	4.30 m	Approx. 2.02 – 2.15 m

The above is the clear distance from the lens front to the screen, excluding rear ventilation and cabling space behind the projector. Calculated at 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. If the venue allows, 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 (8 units)

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

Model	Brightness	Resolution
DU7099Z+	—	—
DU7099Z-BK	7600 lumens	1920x1200
DU7099Z-WH	7600 lumens	1920x1200
DU7099Z-WH Plus	7600 lumens	1920x1200
DU7199Z+	—	—
DU7199Z-WH +	—	—
DU7299Z-BK	9600 lumens	1920x1200
DU7299Z-WH	9600 lumens	1920x1200

For models not on the list, 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 similar model numbers is not worth it.

Throw Ratios Across Model Series

The same D86-04705 Short Zoom 1 installed on the following series has different nominal throw ratios; selection should be based on the actual series of the projector.

Model Series	Throw Ratio
—	0.47-0.50:1

4. Three Things to Confirm Before Replacement

• Panel size must match. The D86-04705 Short Zoom 1 is designed for DU/DW/DX engineering series inch panels. Machines with different panel sizes or resolutions may have image circle and edge illumination issues even if the mount fits.
• Calculate installation distance first. This lens has a nominal throw ratio of 0.47-0.50:1; use the table in Section 2 to map it to your venue dimensions. Prime lenses have no margin, and even zoom lenses need 10–20 cm clearance 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 usually 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 most reliable.