Light-emitting diode array light source and optical engine having the same

A light-emitting diode (LED) array light source comprising:

• a substrate;
• a meshed light-shielding layer disposed on the substrate, the meshed light-shielding layer comprising a plurality of bar-shaped light-shielding patterns intersected with one another to define a plurality of openings arranged in array, wherein each of the bar-shaped light-shielding patterns has a bottom surface in contact with the substrate, a top surface, and two side surfaces, a width of the top surface is smaller than a width of the bottom surface, and a thickness of the meshed light-shielding layer is T1;
• a plurality of LED chips, each of the LED chips being exclusively located in one of the openings and disposed on the substrate;
• and
• a micro-lens array covering the substrate, the meshed light-shielding layer, and the LED chips, the micro-lens array comprising a plurality of micro-lenses arranged in array, each of the micro-lenses respectively comprising a base portion and a lens portion connected to the base portion and being disposed corresponding to one of the openings, respectively, wherein a vertical distance from a top portion of each of the micro-lenses to the bottom surface is T2, and 0.278≦T1/T2≦0.833.