LEDs application in solar cells in a unique way

Light Emitting Diode (LED) is being used by many Car manufacturers in their car´s headlights. The LEDs can also be seen in street lights. The LEDs are used in these two areas because it has high directivity and high light quality. It is common to see that solar cells are placed over these street lights. But there is another way of placing the solar cells, that is, the solar cells can be placed on the road just right below the LED. By placing like this, one can recycle the light, that is, LED to Solar cell to LED. To put it another way, we know only about sunlight to solar cell and from solar cell to bulb. But this paper talks about how to recycle the light that emits from the LED in a street light. Along with LED light recycling, the same solar cell can be used to capture sunlight. Not only this, the same solar cell can be used to capture the light from the car´s headlight. In total we have three benefits by placing the solar cells on the street light. This is a remarkable approach that opens new thinking.