Solar Concentrator Bio-Inspired by the Superposition Compound Eye for High-Concentration Photovoltaic System up to Thousands Fold Factor

We have proposed a fruitful design principle targeting concentration ratio (CR) >1000× for typical high concentrating photovoltaics (HCPV) system, on account of two-concentrator system + homogenizer. The primary dual-lens concentrator unit, completely analogous basic optics seen in the superposition compound eyes, is trend not hitherto reported solar concentrators to our knowledge. Such consisting two aspherical lenses, can be applied minify sunlight and reveal useful effects. underline that, at this stage, CR attained by orders magnitude simply varying radius such lenses known from side. output beam spatially minimized nearly parallel, exactly as occurs eye. In scheme, thanks an array design, sequence equidistant focal points formed. secondary consists multi-reflective channel, which collect all concentrated beams small area where cell placed. located right underneath concentrator. optical characteristics are substantiated simulations that confirm applicability thousands-fold gain value, ~1100×. This, however, also reduced uniformity illumination area. To regain uniformity, we devise fully new homogenizer, hinging scattering principle. A calculated efficiency entire ~75%. Experimentally, prototype implemented evaluate converging features. As final note, mention approach may extended implement even higher CR, it taking extra unit. With simple part, allow fabrication process modeling method large acceptant angle (0.6°), assess its potential part general strategy highly efficient CPV with minimal critical elaboration steps flexibility.