A solid state imaging device has a global shutter structure and includes: a photodetector; a wiring layer; a first transparent insulating film disposed immediately above the photodetector and penetrating the wiring layer; a transparent protective film covering the wiring layer and the first transparent insulating film, and having a higher refractive index than the first transparent insulating film; a first projection provided on the transparent protective film and having a quadrilateral shape in top view; and a second transparent insulating film having a lower refractive index than the first projection.