WH301 Projector Lens 0.76–1.19:1 for Panasonic PT-VMQ65 VMQ75 VMQ85 BAZ622C BAZ722C BAZ822C BMZ82C

The WH301 is a short-throw lens for 0.64-inch panels (Panasonic), with a throw ratio of 0.76–1.19:1. It is compatible with 50 projector models across 1 model series. This article lays out the lens specifications, installation distances, model compatibility list, and replacement tips all at once.

1. Lens Specifications

2. Converting Throw Ratio to Installation Distance

The throw ratio is the ratio of installation distance to screen width. This lens is a zoom lens (0.76–1.19:1), so the same screen 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 face 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 instruction 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—adjusting both variables at once makes it hard to find the sweet spot.

3. Compatible Models (50 Units, Panasonic)

The table below is arranged from newest to oldest by model production date, including each model's resolution, brightness, and original lens zoom ratio, making it easy to quickly locate models by project requirements.

The zoom ratio is the zoom factor of the model's original standard lens (upper limit of the original throw ratio range ÷ lower limit), not the zoom range of the lens described in this article.

Common Features of This Batch

The original standard lens throw ratios of these 50 models are mostly concentrated at 1.09-1.77:1. The 0.76–1.19:1 of this article's model represents an adjustment in focal range—the same projection distance can produce a different screen size, which is precisely the direct reason for changing lenses; at the same time, full shift capability is retained, so the image can still be aligned after adjusting the focal range.

4. Three Things to Confirm Before Replacement

• Panel and resolution must match. This model is for 0.64-inch panels. Machines with different panel sizes or resolutions will show some differences in projection performance; it is safest to verify against the unit's nameplate before installation.
• Interface and locking structure. Interface compatibility is good within the same generation platform, but the locking latch positions differ between generations. If the image is skewed or edges are soft after installation, it is most likely that the lock is not fully engaged, not a problem with the lens itself.
• Leave margin for zoom. When measuring distance, add 10–20 cm beyond the range endpoints, as transport and installation errors may push it out of range.

For models not on the list, it is more reliable to send us the unit's nameplate and a photo of the original lens for verification—same-generation platforms often share interfaces, but ordering based on model similarity alone is a risk not worth taking.