Vivitek 3797866500-SVK Ultra Short Fixed Ultra-Short-Throw Projector Lens: DK10000Z Compatibility

Vivitek Original Lens 3797866500-SVK Ultra Short Fixed is a genuine optical accessory for Vivitek engineering projectors. It is an ultra short throw lens with a throw ratio of 0.38:1, designed for the universal engineering lens (LNS/GB/GC/VL) inch panel. The factory compatibility list covers 1 projector model; 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 in the 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, 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 the projector model — ordering based on similar model numbers carries the risk of incompatibility.

2. Throw Ratio Conversion to Installation Distance

The throw ratio is the ratio of installation distance to image width. This original lens is fixed-focal (0.38:1), so the installation distance changes linearly with image size and has no adjustment margin — it must be measured accurately before installation.

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

3. Compatible Models (1 unit)

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.

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 a risk not worth taking.

Throw Ratios Across Model Series

The same 3797866500-SVK Ultra Short Fixed lens installed on the following series has different nominal throw ratios; selection should be based on the series of the actual projector.

4. Three Things to Confirm Before Replacement

• Panel size must match. The 3797866500-SVK Ultra Short Fixed is designed for universal engineering lens (LNS/GB/GC/VL) inch panels. Projectors with a different panel size or resolution may have image circle and edge illumination issues even if the mount fits.
• Calculate the installation distance first. This lens has a nominal throw ratio of 0.38:1; apply it to your venue dimensions using the table in Section 2. Fixed focal length has no margin, and even zoom lenses should leave 10–20 cm at both ends.
• Check 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 one photo of the projector nameplate and one of the existing lens nameplate and send them to us — verification against the actual hardware is the safest approach.