2results about How to "Evenly mixed light" patented technology

This utility model discloses a light source module, comprising: a light-emitting unit, which includes four LEDs arranged in two columns along a first direction and in two rows along a second direction perpendicular to the first direction; the four chips in each LED emit different colors; for two adjacent LEDs in the first direction, the two adjacent chips in the first direction emit different colors; for two adjacent LEDs in the second direction, the two adjacent chips in the second direction emit different colors; and a lens, which includes an incident end, with LEDs disposed at the incident end. The light-emitting unit of this utility model can achieve a light-emitting surface with four colors evenly distributed; and the lens concentrates the light emitted by the LEDs into a smaller angle beam, while the light spots formed by the light-emitting units overlap, thereby obtaining a high-brightness light spot with uniform color.

The application discloses a layout optimization method of N-color LED packaging devices; the number of each LED packaging device in the method is a multiple of 4, and a phased optimization strategy is adopted; in the first phase, hierarchical layout optimization is realized through a genetic algorithm, light source modules are divided into lattices according to a four-quadrant symmetrical structure, a double-sequence dynamic mapping model is established, the layout of the N-color LED packaging devices is decomposed into N-level progressive single-color optimization processes, and multiple groups of candidate schemes are generated with the maximum illumination uniformity as the target; in the second phase, the color temperature of the working area is calculated through spectral fitting, and the optimal layout scheme is screened with the minimum color temperature standard deviation as the target. Through discrete coordinate solving, the application can reduce the calculation complexity; through the construction of the illumination uniformity and the color temperature uniformity double evaluation indexes, the mixed light of the multi-color LED light source module can be more uniform, the color ghosting problem can be solved, and the illumination uniformity and the color temperature uniformity of the working surface can be improved.