MAINTAINING COLOR CONSISTENCY IN LED LIGHTING DEVICE HAVING DIFFERENT LED TYPES

摘要

A lighting device has a plurality of LEDs of at least two types connected in series. At least one of the LEDs of the first type and LEDs of the second type is connected in parallel to a resistor assembly, such that the temperature-dependent resistance of the resistor assembly stabilizes a ratio of luminous flux output at different junction temperatures of the LEDs.