To provide an exposure apparatus that allows an understanding of the condition of the apparatus and that can prevent a leakage or scattering of a liquid. The number of colors within a cell of the input image is reduced. The pair of slots aligns with the pair of primary pegs when the side flanking panels fold onto the middle panel, and the slots permit the primary pegs to outwardly extend there through. A first layer of encapsulant extends over the first semiconductor die and over the first set of wire bonds. A focusing unit focuses the illumination light in the direction toward the optical axis and is provided downstream of the combining unit.