The present disclosure describes increasing a maximum angle of incidence and a maximum angle of output, of an optical element package, with respect to an optical element contained therein, the optical element being reflective. A sealing resin (5) is filled into a gap between an LCOS element (2) and a package housing (1). The sealing resin (5) covers side surfaces (2s) and a rear surface (2b) of the LCOS element (2).