Chromatogram offsets
The line of chromatogram curve offsets distinctly when adjust led currently. what the reason for that?
We are know that the white light come form blue led excite by yellow phosphor . when forward current is reduce , the blue led light actually increased and the yellow phosphor wasn’t given portion of reduce , and it will cause main wave length of spectrum is increased. so blue led light directly affect spectrum and color temperature . for example:

when the forward current at350mA, the color temperature as 5734K.
when the forward current current increase to 350mA, the color temperature will offset to 5636K. the color temperature will change to warm white when the current further reduce,