Consider All Design Possibilities & Choose the Best
With the number of LEDs calculated, consider all the possibilities to accomplish the design goals. Since each LED is a small light source and has a much longer lifetime than traditional light sources, LEDs can be integrated into luminaires with new and unusual design elements. Designers can take full advantage of LED light’s directionality and wide variety of available secondary optics to create original designs.
At the same time, keep in mind that there are many different regulations that constrain the design choices. Providing a comprehensive list of worldwide standards applicable to LED luminaires is beyond the scope of this document, but Table 7 below gives examples of regulations that will apply in some portions of the world.
The rest of this section explains three design options for each system of our example LED luminaire: optical, thermal and electrical. For each system, guidelines for choosing the best option are provided.