LC016 1.5–3:1 Lens, 10 Ricoh Models: PJ RU6608L/PJ RU6605L/WUL6670/WUL71114/WUL71110/PJ RU11000

LC016 is a medium-to-long-throw lens for the 0.65/0.66/0.67 panel group (Ricoh), featuring a 1.5–3:1 throw ratio and lens shift. It supports 10 models across 2 model series. This guide consolidates the lens specifications, installation distances, model compatibility list, and replacement considerations.

1. Lens Specifications

Lens shift is this lens’s key differentiator. Its horizontal shift range of +64 %, -44 % and vertical shift range of +34 %, -27 % allow the projector to be installed off the screen’s central axis, with lens shift bringing the image back into alignment without requiring keystone correction. Keystone correction comes at a cost—each adjustment reduces the effective pixel count and softens text edges. In professional installations, use lens shift instead of keystone correction whenever possible; this is a fundamental safeguard for image quality.

2. Calculating Installation Distance from Throw Ratio

The throw ratio is the ratio of the installation distance to the image width. For a given image size, this zoom lens (1.5–3:1) covers a range of installation distances and can be focused at any position within that range.

These figures represent the clear distance from the front of the lens to the screen and do not include clearance for rear housing ventilation or cable connections. They are calculated for a 16:10 image; actual distances should be verified on site and against the manual.

Image quality varies between the two ends of the zoom range: near the short end, the image is brighter and the edges appear slightly softer; near the long end, the edges are sharper and brightness decreases slightly. When the venue allows, use the middle of the range. After installation, find the sharpest position on the focus ring first, then fine-tune the lens shift—adjusting both variables at once makes precise alignment difficult.

3. Compatible Models (10 Models, Ricoh)

The following table is arranged from newest to oldest by model production date and includes each model’s resolution, brightness, and zoom ratio for the factory-supplied lens, enabling quick selection according to project requirements.

The zoom ratio is the zoom factor of the model’s factory-supplied standard lens (upper ÷ lower limits of the factory lens’s throw ratio range), not the zoom range of the lens featured in this article.

Factory-Replaceable Lens Models

2 models in this range can be fitted with original Ricoh lenses. Their corresponding throw ratios are listed below for comparison with factory solutions.

Original Ricoh Lens

The 1.5–3:1 throw ratio of the model featured here is closest to the focal-length range of the original A3A (1.22-1.52) lens, enabling a direct comparison before selecting an option.

Common Features Across These Models

The factory-supplied standard lenses for these 10 models generally have throw ratios within 1.22-1.52:1. The 1.5–3:1 model featured here provides an adjusted focal-length range, allowing a different image size at the same projection distance—this is the primary reason for replacing the lens. Full lens shift capability is retained, so the image can still be aligned after the focal-length range is changed.

4. Three Checks Before Replacement

• Confirm the panel and resolution match. This model is designed for 0.67 inch panels. Projectors with different panel sizes or resolutions may produce different projection results; checking the chassis nameplate before installation is the safest approach.
• Check the interface and locking mechanism. Interfaces are generally interchangeable within the same platform generation, but locking latch positions vary between generations. If the image appears skewed or the edges are not sharp after installation, the lock is usually not fully engaged rather than the lens being defective.
• Factor the lens-shift margin into the installation. The shift range provides installation flexibility, but edge image quality declines at the limits. In practice, use no more than 70% of the rated shift values.

For compatibility with a model not on the list, it is safest to send us the chassis nameplate and a photo of the original lens for verification. Same-generation platforms often share the same interface, but ordering based only on a similar model name carries unnecessary risk.