Optical imaging device comprising at least: - an array of light sources, produced on a substrate and forming a display screen; - an array of photo-detectors produced on the substrate and interlaced with the array of light sources; - an optical medium, covering the light sources and the photo-detectors, through which light intended to be emitted by the light sources is capable of propagating, and forming a capture surface against which an element to image is intended to be arranged and a detection surface substantially parallel to the capture surface and against which the arrays of light sources and photo-detectors are arranged, characterized in that the optical medium has a thickness greater than the pitch of the photo-detectors of the array of photo-detectors, and in that the optical imaging device further comprises command and reading means (134, 136, 138, 140) configured for successively lighting and switching off each of a part of the light sources and, during the lighting of each of said part of the light sources, reading at least one part of the photo-detectors intended to receive light rays (113, 115) coming from the lit light source and having undergone reflection against the capture surface while forming, with the capture surface, an angle of incidence estimated as a function of the optical medium and the element to image, and in that each of the light sources is configured to form, on the detection surface, a region the size of which is greater than at least two times the size of an emitting surface of the light source, and in that the value of the angle of incidence is comprised between, or equal to, that of a first limit angle of refraction defined by the optical index of the optical medium and the optical index of the atmosphere in which the element to image is located, and that of a second limit angle of refraction defined by the optical index of the optical medium and an additional optical index of value greater than that of the optical index of the atmosphere in which the element to image is located and less than or equal to that of the optical index of the element to image. - an array of light sources, produced on a substrate and forming a display screen; - an array of photo-detectors produced on the substrate and interlaced with the array of light sources; - an optical medium, covering the light sources and the photo-detectors, through which light intended to be emitted by the light sources is capable of propagating, and forming a capture surface against which an element to image is intended to be arranged and a detection surface substantially parallel to the capture surface and against which the arrays of light sources and photo-detectors are arranged, characterized in that the optical medium has a thickness greater than the pitch of the photo-detectors of the array of photo-detectors, and in that the optical imaging device further comprises command and reading means (134, 136, 138, 140) configured for successively lighting and switching off each of a part of the light sources and, during the lighting of each of said part of the light sources, reading at least one part of the photo-detectors intended to receive light rays (113, 115) coming from the lit light source and having undergone reflection against the capture surface while forming, with the capture surface, an angle of incidence estimated as a function of the optical medium and the element to image, and in that each of the light sources is configured to form, on the detection surface, a region the size of which is greater than at least two times the size of an emitting surface of the light source, and in that the value of the angle of incidence is comprised between, or equal to, that of a first limit angle of refraction defined by the optical index of the optical medium and the optical index of the atmosphere in which the element to image is located, and that of a second limit angle of refraction defined by the optical index of the optical medium and an additional optical index of value greater than that of the optical index of the atmosphere in which the element to image is located and less than or equal to that of the optical index of the element to image.