Lens Arrays and Lens Array Masters
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Offering type ?
PRODUCT:
Component or system, which is commercialized. It is available for ordering multiple pieces and liability is assumed by the provider/seller. Necessary certification of the product was obtained (e.g. CE certification). The product sheet and/or conditions of use are defined.
PROTOTYPE:
Component or system, which has been successfully tested under real or real-like conditions. The prototype is not commercialized as the main purpose is to use it for demonstration and experimentation, including user and market acceptance.
TECHNICAL SERVICE:
Tools and processes and its combination, which are necessary to prepare and test prototypes or products.
- Masters (origination)
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Market
- AR/VR/MR
- Automotive
- Consumer Products
- Decoration & Luxury
- Healthcare & Life Sciences
- Imagers & Displays
- Lighting
- Optical instrumentation
- Transportation
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Manufacturing Pillar
- Wafer-scale
- Roll-2-Plate
- Roll-2-Roll
- Other
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Technology
- Diamond Micro Machining
Wielandts UPMT offers ultra-precise, fully populated lens array masters using its patented DPI® (Dynamic Part Indexing) technology. These masters feature high form accuracy, surface quality, and geometric flexibility, including aspheres and freeforms, with 100% fill factor and sharp transitions.
Offering Description
Wielandts UPMT 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 by diamond machining. 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.
With DPI®, 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.
This technology 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.
Offering Specifications
DPI® On-axis Diamond Turning
- Shapes: Aspheres, mild freeforms, each lens can have a different optical definition
- Feature sizes: > 10 µm
- Lens sag: > 10 µm, < 10 mm
- Form irregularity: 100 nm p-v
- Ra roughness: 2 nm
- Edge slopes: < 80°, limited by tool clearance
- 100% fill factor
- Position accuracy: Lens to lens: < 1 µm, MLA to MLA: 1 µm
- Diffractive structures: Yes (axis symmetric)
- Master size: Up to 8”
- Number of lenses: Up to tens of thousands
- Master material: NiP, brass, PMMA, CuBe, Al, …
