KNOWLEDGE-BASED DRIVER APPARATUS FOR HIGH LUMEN MAINTENANCE AND END-OF-LIFE ADAPTATION
摘要
A knowledge-based driver is provided for powering a solid-state light source with a constant current, including a memory that stores lumens per amp and volts per amp performance characterizations of the light source over time, and a controller that operates in a test mode to estimate the light source degradation based on voltage feedback obtained at a predetermined test current value, and to adjust the drive current in normal operating mode according to the estimated device degradation to implement constant lumens control without external optical feedback components.
申请公布号
WO2011049715(A3)
申请公布日期
2011.06.09
申请号
WO2010US50472
申请日期
2010.09.28
申请人
GENERAL ELECTRONIC COMPANY;ROBERTS, BRUCE, RICHARD;AURONGZEB, DEEDER;PAYNE, KEVIN, CARR