Patent attributes
An illumination system including at least one laser light source, at least one light spot shaping element and a light uniforming element is provided. The at least one laser light source emits at least one laser beam. The light spot shaping element is disposed on a transmission path of the at least one laser beam. At least one surface of the light spot shaping element has multiple microstructures, and a shape of an orthogonal projection of each one of the microstructures on a reference plane perpendicular to an optical axis of the light spot shaping element is a rectangle. The light uniforming element is disposed on the transmission path of the laser beam, and the light uniforming element has a rectangular light entering end, wherein an aspect ratio of each microstructure of the light spot shaping element corresponds to an aspect ratio of the rectangular light entering end.
