Hung, Y.-T.Y.-T.HungGUO-DUNG JOHN SU2018-09-102018-09-102009http://www.scopus.com/inward/record.url?eid=2-s2.0-78751623071&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/350029High concentration photovoltaic (HCPV) utilizes point-focus cost-effective plastic Fresnel lens. And a millimeter-sized Ill-V compound multi-junction solar cell is placed underneath focusing optics which can achieve cell efficiency potential of up to 40.7 %. The advantage of HCPV makes less solar cell area and higher efficiency; however, the acceptance angle of HCPV is about ±1°, which is very small and the mechanical tracking of the sun is necessary. In order to reduce the power consumption and the angle tracking error of tracking systems, a light collector model with larger acceptance angle is designed with ZEMAX®. In this model, the original radially symmetric Fresnel lens of HCPV is replaced by cylindrically symmetric Fresnel lens and a parabolic reflective surface. Light is collected in two dimensions separately. And a couple of lenses and a light pipe are added before the solar cell chip in order to collect more light when sun light deviates from incident angle of 00. An acceptance angle of ±10° is achieved with GCR 400. © 2009 Copyright SPIE - The International Society for Optical Engineering.Fresnel lens; geometric concentration ratio; HCPV[SDGs]SDG7Acceptance angle; Angle tracking; Cell efficiency; Concentration ratio; Focusing optics; Fresnel lens; HCPV; High concentration; High-concentration photovoltaic; Higher efficiency; Incident angles; Light collector; Light pipes; Multi junction solar cells; Power Consumption; Reflective surfaces; Tracking system; Two-dimension; Concentration (process); Optical instrument lenses; Photovoltaic effects; Solar cells; Solar concentrators; Lightconference paper10.1117/12.826789