The first step is to evaluate the capabilities of the software that will be used for the design. A good lighting design including LEDs requires very accurate simulation and analysis tools. Thus optical design, photometry, colorimetry and photo-realism capabilities are necessary in the design process of LED-based systems.

For instance, photometry allows designers to simulate and analyze the intensity, illuminance and luminance of the 3D system. The more accurately these physical results can be simulated, the better optimized the final LED-based system will be.

Moreover, very accurate algorithms (full spectral propagation) based on real physical laws are a necessary condition for improving the design process. These reasons explain why very advanced software in optics is the necessary first step in dramatically improving the design process.

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