About UST lenses

The narrow depth of field in Ultra Short Throw (UST) lenses makes precise installation and adjustment critical for achieving sharp focus across the entire image. Here are a few key points to keep in mind:

1. Follow instructions: Always adhere to the specific guidelines in this manual for installing and adjusting the UST lens. These instructions are designed to help you achieve the best possible image quality.
2. Precise alignment: Ensure that the projector is perfectly level and positioned at the correct distance from the screen. Even small deviations can significantly impact focus due to the narrow depth of field.
3. Back Focal Length: Having the back focal length in its nominal position before installing the UST lens is crucial. This ensures that the focus plane is correctly aligned with the screen.
4. Solid position: Ensure that the projector and projection screen cannot move. Even a slight position change can result in a loss of sharp focus.

The ILD 0.37 UST 90° lens

• The ILD 0.37 UST 90° lens has a primary motorized focus for precise adjustments and a secondary manual adjustment ring for fine-tuning at different throw distances. The secondary ring has a limited impact on overall focus, hence it's called secondary manual focus.
• Due to optical and mechanical tolerances, the position of the primary motorized focus can vary. Each UST lens is measured at the factory, and the reference position of the primary motorized focus is indicated on a label on the lens body. This reference value is crucial for starting the adjustment of the primary motorized focus, especially given the narrow depth of field..
• A 90° lens uses an intermediate image in its optics, causing the top to become the bottom and left become right. Therefore, the projector orientation settings must be adjusted: Ceiling Mount becomes Table Mount and Front Projection becomes Rear Projection.
• The UST 90° lens can be configured to project left, right, up, or down by repositioning the lens body relative to the lens flange. The default orientation is to the left.
• The UST 90° lens is quite large and heavy. To avoid vibrations in the projected image and ensure that the lens axis remains parallel to the projector optics, the installation of the lens support is mandatory.

For correct installation see “ILD 0.37 UST 90° lens installation process”, and related detailed step-by-step procedures.

The ILD 0.5 UST lens

The installation of the ILD 0.5 UST lens is more straightforward. The lens support is not required. However, in case of vibrations the lens support is recommended. To install the lens with lens support see following procedures:

• “Installing the lens support bottom plate”.
• “Lens installation”.
• “Installing the lens support bracket”.

The ILD 0.5 UST lens has a secondary manual adjustment ring for fine-tuning at different throw distances. The secondary ring has a limited impact on overall focus, hence it's called secondary manual focus.

Lens support

In the case where the heaviness of the lens leads to vibrations in the project image and to ensure that the lens axis remains parallel to the projector optics, it is recommended to install the lens support.

Caution: The lens support secures the lens in place. After installation, do not shift the lens horizontally or vertically. To ensure this, disable the lens shift feature in the software.