Miniature freeform flow-line lightguide for sensing: from design to fabrication.

We present the development of a compact (about 1.3 × 2.0 × 20 mm) freeform optical lightguide for sensing applications, from the conceptual design to the fabrication through injection molding.

Compact illumination optic with three freeform surfaces for improved beam control.

Multi-chip and large size LEDs dominate the lighting market in developed countries these days. Nevertheless, a general optical design method to create prescribed intensity patterns for this type of extended sources does not exist. We present a design strategy in which the source and the target pattern are described by means of "edge wavefronts" of the system.