Patent ID: 9347631
Filing Date: 2016-05-24
CPC Classification: F21K,F21S,F21V,F21Y,H01L,H05B,H05K

Claim Text:
1. A light engine comprising: a printed circuit board; a plurality of LED groups on said printed circuit board coupled between a power supply input and a respective one of a plurality of return paths associated with said LED group; each of said LED groups comprising a plurality of LED sets coupled in parallel; each of said LED sets comprising a plurality of LEDs coupled in series; wherein a first one of said LED groups is comprised of at least a subset of LEDs having a first colour temperature, and a second one of said LED groups is comprised of at least a subset of LEDs having a second colour temperature different from said first colour temperature; wherein at least one of said LEDs having a first colour temperature from said first LED group and at least one of said LEDs having a second colour temperature from said second LED group are intertwined on said light engine.