An endoscope includes an objective optical system at a distal end of an inserted portion to acquire a subject image a part that splits the subject image into two optical images focused differently an imaging device that acquires two images by simultaneously capturing the optical images arranged on an imaging surface and a part for cutting out at least abutting portions of the optical images on the imaging device, wherein A+B>C+D, where A is half the maximum length of light-receiving regions for the optical images at the imaging surface where TW is an entry angle at the imaging surface when A is at the maximum image height and d is an optical-path-length difference between the optical images, B=d×tan TW C is half the length of the light-receiving regions in a direction of the optical images arranged on the imaging surface and D is a distance between the two light-receiving regions.
