Nanometer light bar capable of automatically adjusting brightness

The utility model discloses a nanometer light bar capable of self-adjusting brightness, which relates to the technical field of light bars and comprises a far lighting lamp, a magnetic piece is fixed at the upper end of the far lighting lamp, a power supply line is fixed on the side edge of the far lighting lamp, and the other end of the power supply line opposite to the far lighting lamp is connected with a universal serial bus (USB) connector. According to the utility model, the far illuminating lamp, the middle illuminating lamp and the near illuminating lamp are connected together through the connecting plate, and the brightness sensor is used for sensing the illumination intensity, so that the illumination concentration is reduced; the brightness upper limit of the high-distance illuminating lamp, the middle illuminating lamp and the low-distance illuminating lamp is controlled through the brightness adjusting button, so that the illumination brightness is flexibly adjusted. 本实用新型公开了一种自调节亮度的奈米灯条，涉及灯条技术领域