Patent ID: 8052316

Claim:
A lighting device comprising: first, second, and third light sources which each emit monochromatic light in the same direction, wherein the light emitted from the first, second, and third light sources are different colors; first, second, and third beam shapers corresponding to the first, second, and third light sources, respectively, wherein light from the first, second, and third light sources are incident, respectively, on the first, second and third, beam shapers, and light emitted from the first, second, and third beam shapers is parallel and has a predetermined cross-sectional shape; and first, second, and third light dividing members, each comprising a light receiving surface corresponding to the cross-sectional shape of the light emitted from the first, second, and third beam shapers, wherein each of the light dividing members divides the monochromatic light incident thereon into a plurality of monochromatic light beam groups which are parallel to each other and have a predetermined width and interval therebetween, wherein the plurality of monochromatic beam groups emitted from the first light dividing member are parallel to the plurality of monochromatic beam groups emitted from the second and third light dividing members such that the plurality of monochromatic light beam groups emitted from all of the light dividing members are emitted in a spatially alternating, repeating pattern.