A unit pixel array of an image sensor includes a semiconductor substrate having a plurality of unit pixels, an interlayer insulating layer disposed on a front side of the semiconductor substrate, a plurality of color filters disposed on a back side of the semiconductor substrate, a plurality of light path converters, each of the light path converters being disposed adjacent to at least one color filter and having a pair of slanted side edges extending from opposing ends of a horizontal bottom edge, and a plurality of micro lenses disposed on the color filters.