Patent ID: 7511367

Claim:
An optical device comprising: a base made of a molding resin and having an opening, a first face, and a second face; a lead frame buried in the base and having a part exposed from the base at the outer periphery of the second face of the base to serve as an outer terminal portion, a part exposed from the base in a region of the second face of the base surrounding the opening to serve as an inner terminal portion, and a part exposed from the base in a region of the second face between the outer terminal portion and the inner terminal portion to serve as an intermediate terminal portion; a transparent member attached to the first face of the base and covering the opening; a first resin member for sealing a gap between an edge of the transparent member and a portion of the first face of the base surrounding the opening; an optical element chip provided on the second face of the base and including an optical element electrically connected to the inner terminal portion, the optical element chip having a principal surface facing the transparent member with the opening sandwiched therebetween, the second face being at the opposite side of the first face; an integrated circuit chip bonded to a back surface of the optical element chip and including a semiconductor element electrically connected to the intermediate terminal portion; and a second resin member for sealing a gap between respective edges of the optical element chip and the integrated circuit chip and a portion of the second face of the base surrounding the opening.