A monolithic tip-tilt system with integrated mirror has been developed for the optical and infrared instrumentation division of the Netherlands Research School for Astronomy NOVA. Especially designed for stable tip-tilt manipulation, the system is completely play-free and self braking. A high gear ratio from actuator to mirror displacement reduces actuator demands and enhances displacement resolution and stability making it ideal for applications requiring accurate and reliable mirror positioning.

As part of our internal product qualification, we have developed a vison-based metrology system that performs 2D kinematic analysis of our actuator lineup. Vision based systems perform non-contact measurements and inspections, offering several advantages over traditional measurement methods.

For reliable thermal models, knowledge of thermal contact resistance is often key. However, resistance values for most material combinations in specific contact conditions (e.g., contact pressure, vacuum environment) are not available in literature. We developed a measurement tool to obtain values for contacts with high resistance, such as metal to glass with low contact pressure. This enables us to reliably predict temperature distributions of future designs.

As part of a custom vacuum tribometer we developed a sample interface that enables quick exchange of test samples. By fundamentally understanding the problem, we achieve a high coupling stiffness and nanometer-range mounting repeatability in all 6 degrees of freedom. A well-thought-out mechanical concept, and clever selection of construction materials all contribute to this performance.

By using magnetic simulation software, the magnetic stray field of neighboring permanent magnets were mapped and analyzed. Next, the feasibility of magnetic shielding could be assessed, and its design optimized. This allows us to develop a substrate table for magnetic sensitive wafer testing.

Using magnetic field simulations, we can analyze and predict the behavior of magnetic forces. This technical expertise has enabled the development of an innovative magnetic gravity off-loading system. This system is designed to facilitate controlled vertical displacement with very low dissipation, making it ideal for applications in vacuum and cryogenic environments.

As part of our internal R&D program, we have developed a high-vacuum-compatible sample manipulator that offers nanometric positioning performance. This cutting-edge technology ensures precision and reliability for the most demanding applications.

This piezo-based stick-slip actuator is designed for a telescope instrument. In total 110 actuators are used side by side to reposition individual optical masking elements at the micron level, operating in vacuum and cryogenic conditions. With so many actuators in the system, we designed for robust, reliable, and cost-effective technology. The actuator offers endless stroke capabilities, micron level resolution, zero energy dissipation when stationary, and an integrated guiding function for the optical elements.

Building on our expertise in vacuum positioning, we have developed a vacuum-compatible high-precision motion stage that offers nanometric repeatability. This advanced stage is designed to meet the demands of precision applications, ensuring reliable performance in challenging environments.