Computed Axial Lithography (CAL) For 3D Additive Manufacturing

UC Berkeley's approach surpasses recently-reported volumetric aperiodic 3D structure fabrication using holographic light fields in its geometric flexibility.  Similarly, the inherently volume-based approach of this technology provides an order-of-magnitude improvement in fabrication speed over conventional layer-by-layer "2 1/2D" printing techniques. Finally, the surface roughness problems imposed by layer-by-layer fabrication are substantially reduced if not removed entirely. Past/current use has included improvement to photopolymer-based additive manufacturing Faster part generationImproved surface quality, no stair step artifacts from layeringReduction of geometric constraints that arise from 2D layer slicing, simplified post-processing

Additive manufacturing generated optics with high quality surface finishHollow or overhanging structuresLarge dynamic range mesoscale AM structuresPrinting/fabrication on a previously fabricated 3D structure immersed in the resinProcessing very soft, flexible or brittle polymers and geometrically delicate/fragile structures (as there is no relative structure/fluid motion during printing).

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Additional Technologies by these Inventors

• Robust Superhydrophobic Coating for Aluminum Surfaces
• Selective Transfer Of A Thin Pattern From Layered Material Using A Patterned Handle

Tech ID/UC Case

28754/2017-197-0

Related Cases

2017-197-0

USA