Light Bar Fabrication Using Luminescent Sorting for Uniformity

The patent applies preliminary action by measuring and classifying the luminescent characteristics of light beads before assembly. Specifically, the luminescence intensity of each light bead is measured in advance, and beads are sorted into different groups based on their characteristics. This pre-screening process ensures that when beads are disposed on the printed circuit board, they are arranged in a sequence that compensates for natural variations, thereby achieving uniform light emission across the light bar while maintaining a manageable fabrication process.

The patent applies local quality by arranging light beads with different luminescent characteristics at specific positions rather than using uniform beads throughout. The method measures and categorizes light beads by their luminescence intensity, then strategically places beads with higher intensity at certain positions and lower intensity beads at other positions. This position-specific arrangement compensates for individual bead variations, achieving consistent overall light emission while allowing the use of beads with naturally different characteristics, thus maintaining fabrication ease.

The patent applies parameter changes by measuring and utilizing the luminescence intensity parameter of each light bead. Instead of treating all beads as identical, the method measures the actual luminescence intensity of each bead and uses this parameter to determine its optimal position on the printed circuit board. By changing from a uniform arrangement approach to a parameter-based arrangement approach, the patent achieves high luminescence uniformity while maintaining reasonable productivity through an efficient measurement and sorting process.