Collimated optical source

A collimated lighting source for inspection, comprising:

• a base;
• a plurality of first solid-state lighting assemblies and a plurality of second solid-state lighting assemblies, the plurality of first solid-state lighting assemblies and the plurality of second solid-state lighting assemblies being alternatively arranged in a single row on the base, wherein the first solid-state lighting assemblies each comprise at least one first unit cell and one fluorescent portion illuminated by a light beam emitted by the first unit cell to emit fluorescence;
• a column of semi-cylindrical lenses arranged along the single row, counts of the semi-cylindrical lenses corresponding to total counts of the first and second solid-state light emitting modules, each of the semi-cylindrical lenses having a cylindrical, unidirectionally collimating, light-refracting outer edge extending along a major axis, the major axis being oriented perpendicular to the single row;
• a semi-cylindrical elongated lens disposed on the base and oriented perpendicular to the major axis of each of the semi-cylindrical lenses;
• at least one photomask configured to:
• when the second solid-state lighting assemblies are enabled to emit light beams, mask the light beams from entering the fluorescent portions of the first solid-state lighting assemblies, and when the first solid-state lighting assemblies are enabled to emit light beams, expose the first solid-state lighting assemblies.