Imaging device with protective resin layer and stress relaxation region

An imaging device including: a photoelectric converter; a protection member provided on a light incidence side of the photoelectric converter; a substrate opposed to the protection member with the photoelectric converter interposed therebetween and having a first surface on the photoelectric converter side and a second surface opposed to the first surface; a rewiring layer provided in a selective region of the second surface of the substrate; and a protective resin layer provided on the second surface of the substrate, the second surface of the substrate having an external terminal coupling region exposed from the protective resin layer, and a stress relaxation region exposed from the protective resin layer and disposed at a position different from the external terminal coupling region.