Blair L. Unger

TL;DR: The very high efficiency solar cell (VHESC) program is developing integrated optical system-PV modules for portable applications that operate at greater than 50% efficiency as mentioned in this paper.

TL;DR: In this article, a small, integrated photovoltaic module was designed, fabricated, and tested, consisting of two separately-contacted, high efficiency, multijunction solar cells and non-imaging optics that both concentrate and spectrally split the incoming light.

TL;DR: In this article, an elongated LED lighting arrangement comprises a light pipe with homogeneous optical material between first and second ends and a first dichroic mirror tuned to pass blue light.

TL;DR: A light collection and concentration system comprises a single light guide apparatus, a light-transmitting medium layer disposed immediately adjacent the single light-guide apparatus, and a primary light concentrator component disposed adjacent to the light transmissive medium layer, including a plurality of primary concentrator elements each of which is in optical registration with a respective one of the light injection elements of the single guide apparatus as mentioned in this paper.

TL;DR: In this article, a library of 13 chalcogenide glasses with broad IR transmission (NIR through LWIR bands) was developed to satisfy these criteria, including glass design and synthesis, sheet fabrication, preform making, lens molding and surface finishing.