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

<table>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).</table>

International Journal of Photoenergy

fig4

Figure 4

Figure 4: Implementation and Test of a LED-Based Lamp for a Lighthouse 