Unique ultra precision machining and replication technologies for your next generation products

Wielandts UPMT is a specialized optical engineering company that develops unique ultra-precision machining and replication processes to turn the most demanding optical concepts into physical reality. By mastering the entire vertical value chain under one roof—from nanometer-level diamond turning to bespoke replication—we eliminate outsourcing risks and provide custom manufacturing solutions with sub-micron predictability.

Our Origin: Breaking Through Industry Bottlenecks

Wielandts UPMT was founded in 2013 on a foundation of pure, hands-on problem solving. Driven by a desire to overcome the rigid physical constraints of manufacturing high-density lens arrays and monolithic multi-cavity molds with uniform accuracy, our founder, Marc Wielandts, engineered a revolutionary solution from his private workshop. This breakthrough led directly to the development and patenting of our DPI® (Dynamic Part Indexing) technology.

Before DPI®, achieving sub-micron form accuracy across dense optical arrays was a massive industry bottleneck. Our proprietary solution shattered those limitations, allowing optical designers to scale array density and geometric complexity without sacrificing surface finish or form fidelity. What began as a singular technological triumph has evolved into an agile, highly specialized engineering house serving demanding markets such as AR/VR, automotive, space, defense, and specialized lighting.

Second-Generation Leadership, Uncompromised Independence

Still 100% family-owned, the company’s day-to-day operations are managed by the second generation of leadership with an absolute focus on continuous technological evolution and deep engineering continuity. Operating intentionally as a highly focused team, this allows us to pivot instantly, innovate without corporate bureaucracy, and treat our customers’ intellectual property with absolute accountability.

Our day-to-day philosophy balances two core pillars:

• Continuous Technological Development: We systematically expand our state-of-the-art equipment, lab capabilities, and in-house processes—including galvanic NiP plating, 5-axis micro-milling, and precision dicing—to provide appropriate, single-roof manufacturing loops.
• Human-Scale Precision: Ultra-precision is as much an art as it is a science. Our highly skilled team owns the process chain from toolmaking to advanced metrology validation, ensuring an uninterrupted loop of expertise that no automated assembly line can replicate.

Your Designs Demand Nanometer Accuracy. Partner With the Team Who Can Prove It.

We don't just machine parts; we co-engineer the entire process chain to make your optical breakthroughs scalable. Let’s discuss your project's toughest geometric challenges.