Patent ID: 8785839

Claim:
An optical sensor, comprising: a base made of a glass material and having a substantially plate shape, a concave portion formed in a surface of the base, and a plurality of notches each formed at a corner of a peripheral edge along an outside surface of the base; a lid portion made of a glass material, the lid portion having a flat plate shape and being stacked and bonded onto the surface of the base so as to close the concave portion to form a cavity portion; an optical element having a light receiving portion for receiving light, the optical element being disposed on a back surface of the lid portion opposite to the base so that the light receiving portion faces the back surface of the lid portion, and the optical element being configured to photoelectrically convert light transmitted through the lid portion and received by the light receiving portion; a plurality of internal wirings formed on the back surface of the lid portion opposed to the base, the plurality of internal wirings each including an element connection portion connected to the optical element and a wiring connection portion disposed at a position opposed to a corresponding one of the plurality of notches of the base; and a plurality of external wirings disposed along a surface of the corresponding one of the plurality of notches so that one end is connected to the wiring connection portion of a corresponding one of the plurality of internal wirings and another end is exposed on a surface of the base on an opposite side of the lid portion.