Patent ID: 8866406
Filing Date: 2014-10-21
Classification: F21K,F21V,F21W,F21Y,Y10T

Abstract:
1. A method of determining efficacy of one or more light sources in a luminaire housing for a given set of operating conditions comprising: a. thermally characterizing the luminaire housing for effectiveness as a heat sink comprising determining a housing temperature for the given set of operating conditions based on one or more of: b. determining one or more light source output degradation factors for the one or more light sources at the given set of operating conditions based, at least in part, on (i) a measured light output of said one or more light sources at one or more operating conditions, and (ii) the thermal characterization of the luminaire housing or a deviation between the light output measurements and a reference data at the given set of operating conditions; and c. predicting actual light output and/or efficacy of the one or more light sources at the operating conditions based on (i) the thermal characterization of the luminaire housing, (ii) a rated efficacy of the one or more light sources, and (iii) the one or more degradation factors.