Abstract: A vehicle-mounted camera (1) comprises a lower case (2) constituting a part of a case, an upper case (3) provided with lenses (3a, 3b) constituting the case integrally with the lower case (2), an imaging element (4) for converting light passing through the lenses (3a, 3b) into an electrical signal, an MID-mounting substrate (6) with the imaging element (4) mounted, substrate mounting bosses (3c, 3d) for mounting the MID-mounting substrate (6) to the upper case (3), and spacers (7a, 7b) interposed between the MID-mounting substrate (6) and the substrate mounting bosses (3c, 3d) for adjusting the clearance between the lenses (3a, 3b) and the light receiving plane of the imaging element (4), structured to fix the lower case (2) to the upper case (3) while the MID-mounting substrate (6) mounted with the imaging element (4) is being fixed to the upper case (3) by the substrate mounting bosses (3c, 3d).