Production of Fresnel lens for ELS CPV

Today, what I want to introduce is the use of Fresnel lens to improve the generating efficiency of solar cell which we manufactured and supplied sample to L company.  These days, we can see price indication with crystal which is used in the E-book of big hyper market. E-book needs electricity although power consumption is small compared with LCD. Therefore internally, battery or solar cell is used.  Hyper market manager is inclined to use solar cell in the aspect of management.

The core of this project is to increase the amount of light by means of lens as the solution when due to the internal environment of hyper market, it is not easy to get enough solar energy.

As illustrated in the picture below, light was collected using the lens slightly bigger than the solar cell panel, and as the result, we could verify that there was the effect of increase of generation quantity, However, due to the direction of focus that lens has, we could not realize the increase of omnidirectional generation quantity which basically solar cell shall satisfy. 

At present, though this project is cut off as there was no additional request, we wish that we can improve the increase of m=omnidirectional generation quantity by giving changes to the lens.







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