WE299 Projector Lens 0.5–0.6:1 for Blue Sheng Kadun D130K and 1 Other Engineering Projector

The WE299 is a short-throw lens for 0.65/0.66/0.67-inch panel groups (BlueSun Kaden), with a throw ratio of 0.5–0.6:1 and lens shift. It is compatible with 1 projector model and 1 model series. This article lays out the lens specifications, installation distances, model compatibility list, and replacement tips all at once.

1. Lens Specifications

Shift capability is the key differentiator of this lens. A shift range of ±35% horizontal and ±10% vertical means the projector can be installed off the screen's center axis and the image brought back via lens shift, without resorting to keystone correction. Keystone correction comes at a cost—each step of correction loses a portion of actual pixels, and text edges become soft. In engineering installations, anything that can be solved with shift should never be solved with keystone correction; this is the baseline for image quality.

2. Converting Throw Ratio to Installation Distance

Throw ratio is the ratio of installation distance to image width. This lens is zoom (0.5–0.6:1), 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 are clear distances from the lens face to the screen, excluding rear ventilation and cabling space behind the chassis. Calculated for 16:10 aspect ratio; actual values are subject to on-site measurement and the 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 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—moving both variables at once makes it hard to find the sweet spot.

3. Compatible Models (1 unit, BlueSun Kaden)

The table below is ordered from newest to oldest by model production date, including each model's resolution, brightness, and original lens zoom ratio, for quick reference by project requirements.

Common Traits of This Batch

The original standard lenses of this 1 model mostly have throw ratios concentrated at Depends on the lens. The 0.5–0.6:1 model in this article represents an adjustment in focal range—the same projection distance can produce a different image 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 0.67-inch panels. Machines with different panel sizes or resolutions will show some differences in projection performance; it is safest to verify against the chassis nameplate before installation.
• Interface and locking structure. Interface compatibility is good within the same generation platform, but 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.
• Shift margin must be factored into installation. The shift range leaves room for installation, but edge image quality degrades when pushed to the limit; it is recommended to keep actual use within 70% of the rated value.

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