International Journal of Photoenergy / 2012 / Article / Fig 2

Research Article

Design of Novel Compound Fresnel Lens for High-Performance Photovoltaic Concentrator

Figure 2

Determination of the critical radius. (a) The direct refractive sawtooth. (b) The TIR sawtooth. The sawteeth and the angle of incident ray are locally exaggerated, only for interpreting conveniently.

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