Ricoh 512960 Wide Zoom #B2 Standard-Throw Projector Lens for PJ KU12000

Genuine Ricoh Lens 512960 Wide Zoom #B2 is an original optical accessory for Ricoh business projectors. It is a standard-throw lens (Standard Throw) with a throw ratio of 1.02-1.36:1. The manufacturer’s compatibility list covers 1 model. Before installation, simply verify the projector model and panel size—no adapter ring workaround is needed. The value of a genuine lens lies not in the extra figures on a specification sheet, but in the fact that it is factory-calibrated to the optical path and mount of the projector series. Once installed, image-circle coverage, edge illumination, and focusing travel all meet their design values, so there is no need to use keystone correction to compensate for image quality.

I. Lens Specifications

The above specifications are subject to the manufacturer’s official specifications. For mechanical dimensions, flange distance, and mount type not shown in the specifications table, please contact us with the projector model for verification. Placing an order solely because the model names are similar carries the risk that the lens will not fit.

II. Calculating Installation Distance from Throw Ratio

The throw ratio is the ratio of the installation distance to the image width. This genuine lens is a zoom lens (1.02-1.36:1), so the same image size corresponds to a range of distances, and it can focus at any position within that range.

These figures represent the clear distance from the front surface of the lens to the screen and do not include clearance behind the projector for ventilation and cable connections. They are calculated for a 16:10 image; actual on-site measurements and the manufacturer’s manual take precedence.

Image quality differs at the two ends of the zoom range: the image is brighter and the edges are slightly softer near the near end, while the edges are sharper and brightness is slightly lower near the far end. Where the venue allows, use the middle of the range. After installation, find the sharpest position using the focus ring, then fine-tune the lens shift.

III. Compatible Models (1 model)

The following list is taken from the manufacturer’s compatibility list. Brightness and resolution are populated from the model database; entries that cannot be retrieved are shown as “—” rather than estimated.

To check whether a model outside the list is supported, send us photos of the projector nameplate and the existing lens. Platforms of the same generation often share the same mount, but placing an order solely based on a similar model name is not worth the risk.

Throw Ratio by Projector Series

The published throw ratio varies by series when the same 512960 Wide Zoom #B2 is used. Select the value based on the series of the actual projector.

IV. 3 Checks to Confirm Before Replacement

• Confirm the projector’s imaging chip and resolution. The genuine lens is designed for a specific panel size. If the panel specifications differ, the image circle cannot provide full coverage, resulting in vignetting or light loss at the edges.
• Calculate the installation distance first. This lens has a rated throw ratio of 1.02-1.36:1. Use the table in Section II to match it to your venue dimensions. A fixed-focus lens offers no adjustment margin, and even a zoom lens requires 10–20 cm of margin at both ends.
• Verify the mount and locking mechanism. The genuine lens is calibrated to the mount of this projector series. You must hear it lock into place after installation. A skewed image and soft edges are usually caused by incomplete locking rather than a fault in the lens itself.

If you are unsure, send us one photo each of the projector nameplate and the nameplate on the existing lens. Verification against the physical equipment is the safest approach.