TY  - JOUR
TI  - Two-Mirror Compact System for Ideal Concentration of Diffuse Light
AU  - Shlomi Steinberg
AU  - Nandor Bokor
AU  - Nir Davidson
PY  - 2022
T2  - Journal of the Optical Society of America A
UR  - https://ssteinberg.xyz/2022/02/15/2mc-diffuse-light-concentrators/
DO  - 10.1364/JOSAA.447493
VL  - 39
IS  - 4
SP  - 628
EP  - 633
AB  - We introduce a simple, compact two-mirror system for diffuse light concentration. The design principle is based on local conservation of optical brightness. The system design is flexible, and we are able to compute mirror shapes given arbitrary incident beam direction and target cross-sectional shape. As illustration, we showcase our design for flat and cylindrical target geometries, and we also demonstrate that our system is able to concentrate efficiently along one or two dimensions. We perform numeric experiments that confirm our theoretical results and provide diffuse light concentration very close to the thermodynamic limit in all cases we considered.
KW  - optics
KW  - solar
KW  - sunlight
KW  - sun
KW  - light
KW  - concentrators
KW  - diffusivity
ER  -