"I love Wielandts UPMT - Ultra-Precision Machining Technologies"

2022-05-10 08:12:35

Skip to contentMenuHomeServicesDPI® Lens Arrays MasterHiFi Optics® replicated partsDiamond TurningNewsAbout us – Contactyour nextfull plastic wafer level lens arrays|lens array prototype|100% fill factor lens array|lens array master Our services DPI® Lens Arrays Master Diamond turned masters.Unique capabilities.Outstanding accuracies. HiFi Optics® MLA Replicated full plastic lens arrays.On a wafer level. SPDT Services Experienced people.High quality parts.Best lead time. Gallery DPI® Lens arrays mastersDPI® (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. DPI® On-axis Diamond Turning ShapesAspheres, mild freeforms, each lens can have a different optical definitionFeature sizes> 10 µmLens sag> 10 µm, < 10 mmForm irregularity100 nm p-vRa roughness2 nmEdge slopes< 80°, limited by tool clearance100% fill factorYesPosition accuracyLens to lens: < 1 µmMLA to MLA: < 1 µmDiffractive structuresYes (axis symmetric)Master sizeUp to 8”Number of lensesUp to tens of thousandsMaster materialNiP, brass, PMMA, CuBe, …2nmRa Roughness100nm p.-v.Surface irregularity