9 Computer software and downloadable software for characterizing and mapping both the spatial and angular distribution of light radiating from light sources; photometric tool, namely, a charge coupled device and integrated software to measure and analyze light sources; computer software for the design and analysis of optical systems; imaging photometers and colorimeters used to measure the properties of light and materials, namely, radiance, luminance, chromacity, reflectance, transmittance, scatter, bidirectional reflectance distribution function (BRDF), bidirectional transmittance function (BRTF), color, contrast, color temperature, spectral power distribution and illuminance; computer software for color calibration of displays, large video screens and scoreboards