Development of high power 2π-LED total luminous flux standard lamp

Résumé fourni par la source

A large luminous flux 2π-LED total luminous flux standard lamp (2π-LED standard lamp) based on the 200 LED chips arranged in a rectangular structure and cooled by a thermoelectric cooler (TEC) is reported. The overall size of the 200 LED chips is 167.9 mm × 78.6 mm. Under the conditions of the driving voltage is 52.5 V, the current is 1.4125 A, the TEC cooling temperature and the ambient temperature are set to 25 °C, the total luminous flux of the 2π-LED standard lamp exceeds 10000 lm, the luminous efficiency reaches 135.3 lm/W. The photometric instability and non-repeatability are only 0.07% within 200 h and 0.04%, respectively. The deviation between the luminous intensities at different angles is 2%, and the colour space uniformity is 0.001. This type of standard lamp has important application for improving the efficiency and reliability of the traceability of photometric parameters such as total luminous flux, illuminance, and luminance of a high-power 2π-LED lighting.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.