International Journal of Photoenergy / 2014 / Article / Fig 4

Research Article

Implementation and Test of a LED-Based Lamp for a Lighthouse

Figure 4

Normalized light intensity, in arbitrary units. Solid line: contribution only from the cone. It can be seen that beyond the range −29/18 deg the contribution is largely due to the light coming directly from the concave mirror (stray light).
574270.fig.004

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