Techniques for 3D printing fiber optic-like structures have been developed at Disney Research. The fiber optic core is printed in a clear plastic and the cladding is printed in another material. This multi-material approach allows light to bounce through the fiber with little loss. Further, because this is 3D printed, arbitrary shapes can be created. Disney demonstrates animated eyes illuminated with small projectors and interesting lightbulb meant to diffuse light in interesting ways.
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