A mobile device with an integrated camera responsive to signals from a camera activator. The laser surface is provided with a mask masking away parts of its surface to be prevented from dry etching. The through hole is formed at its peripheral edge with a recessed portion that dents from a top surface of the die pad and is associated with the through hole. The terminal 142 is formed integrally with the housing 110. This configuration reduces the oil volume required for operation, which ultimately reduces the back pressure applied against the diaphragm.