The utility model discloses an illumination optimization lamp group and illumination optimization device, the illumination optimization lamp group comprises at least two basic units, each basic unit comprises a first lead, a second lead and an
LED lamp string formed by connecting a plurality of
LED lamp beads in series, the first lead comprises a first end and a second end, the second lead comprises a third end and a fourth end, and the third end is connected with the fourth end. The
wire resistance of the first wire is the same as that of the second wire, one end of the
LED lamp string is electrically connected with the first end, the other end of the LED lamp string is electrically connected with the fourth end, and the first end of the basic unit located at the foremost end is electrically connected with one of the positive
electrode and the negative
electrode of a power source. And the fourth end of the basic unit at the rearmost end is electrically connected with the other one of the positive
electrode and the negative electrode of the power supply. The utility model mainly solves the problem of inconsistent front and back brightness of a plurality of groups of light sources, and by additionally arranging the second lead and changing the
current loop, the first lead and the second lead have the same
wire resistance, thereby achieving the effect of consistent front and back brightness of the plurality of groups of light sources.