Gallery
DPI® Lens arrays masters
| DPI® (Dynamic Part Indexing) is a patented technology developed by Wielandts UPMT. This unique system brings the best ultra-precision machining technique, i.e. on-axis diamond turning, to produce arrays of all kinds. By shifting the workpiece with respect to the main spindle in a dynamic, balanced and ultra precise way, each surface of an array can be machined sequentially. With this technique, the outstanding form accuracy, surface finish and geometric freedom that is achievable by ultra-precision diamond turning on a single on-axis lens can be obtained on each lens of each array of a fully populated master.
DPI® brings many advantages compared to classical freeform machining techniques like amongst others: lower surface form error, reduced machining times, increased geometrical freedom, true 100% fill factor (with extremely sharp edges between intersecting lenses), lower surface roughness, etc, which makes DPI® a unique solution for your next lens array application. Masters have been successfully manufactured for a broad range of customers’ applications like: polymer-on-glass replication for automotive illumination, lens arrays for augmented- and virtual reality, consumer goods sensors and imaging devices, medical applications, etc. |
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2
nm
Ra Roughness
100
nm p.-v.
Surface irregularity
<
1
µm
Position accuracy
HiFi Optics® replicated lens arrays
| HiFi Optics® is a replication technology to produce full thermoplastic lens arrays on a wafer level. Based on a DPI® master and a specially adapted molding process, various kinds of lenses and arrays can be replicated in a highly productive way, which makes it perfectly suitable for high volume applications. Wafers containing multiple elements can subsequently be handled, coated and diced. |  |
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| For lenses having extreme design requirements, a second molding step is added to complete the HiFi Optics® molding process. This second step is an isothermal compression molding step designed to bring the lenses to their final shape with outstanding accuracy. By compressing the lenses in a closed-cavity cycle, small features are replicated with high fidelity while allowing particularly low minimum thickness across the part and high aspect ratio. |  |
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| HiFi Optics® has been used to produce parts for various kinds of customers and applications like: medical imaging devices, augmented- and virtual reality, mobile imaging, LiDAR, automotive applications,etc. |
Single Point Diamond Turning
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Wielandts UPMT provides single-point diamond turning services for single parts and series production of space mirrors, infrared lenses, prototype imaging or illumination lenses, … The company is equipped with State-of-the-Art ultra-precision machines operating in a thermally stable and vibration free clean room environment. Beside these machining equipments, a broad range of metrology instruments guarantee the utmost quality of every part that is manufactured.
The company can also offer in-house diamond fly-cutting and diamond milling, as well as rough turning/milling using conventional CNC machines. Combining different techniques for machining, fixturing and compensation, light-weighted parts can for example be machined with an extreme accuracy. Equipped with a fast-tool-servo, the company can also machine various types of freeforms in the most efficient way. With these technologies and its highly skilled staff, Wielandts UPMT offers its customers a complete service from the bulk material to the finished part. Multiple projects have been successfully realized: mirrors for space instrumentation, observation, laser and UV, prototype imaging and illumination lenses, ZnSe infrared lenses, gratings, … |
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Metrology equipment
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about us
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Wielandts UPMT is a start-up company that has developed a unique patented technology called DPI® (Dynamic Part Indexing) that is a real breakthrough solution for the machining of lens arrays and monolithic multi-cavity molds. Using this technology, Wielandts UPMT manufactures lens array masters to customer specifications for diverse applications: MLA masters for automotive lighting, fully populated masters for optical structure replication processes, IR lens batch machining and optics at wafer level. Based on its DPI® tools, the company also provides replication services of full thermoplastic lenses and MLAs from prototyping to volume production with a technology called HiFi Optics®. These replicated optics are particularly suited to new demanding applications like LiDAR, consumer goods diffusers, imaging MLAs, … Finally, and thanks to its highly skilled and experienced personnel, the company also provides ultra-precision machining services. Wielandts UPMT is a 100% family owned business that started in a garage in 2013 based on a problem that was solved by its founder, Marc Wielandts, during its free time. Nowadays, the company employs mechanical and physician engineers as well as highly skilled technicians aiming to provide solutions to the micro-optics market. |
They support us
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ContactWielandts UPMT SA VAT : BE0537.956.555 Phone: +32 4 378 03 20 |
