Camera head and imaging system

A camera head that has an elongated shape and is used for imaging an imaging area located in a vicinity of a leading end portion in a longitudinal direction, comprising:

• a camera module;
• two or more light source units disposed at positions farther from the leading end portion than the camera module is in the longitudinal direction;
• and
• a light guide unit disposed radially outside an outer surface of the camera module and configured to guide light emitted from each of the two or more light source units to the vicinity of the leading end portion so that the imaging area is irradiated with the light,
• wherein at least two light source units of the two or more light source units are disposed at different positions in the longitudinal direction,
• wherein the light guide unit includes two or more optical fibers respectively corresponding to at least two light source units of the two or more light source units, and the two or more optical fibers are disposed around the camera module so as to be spaced apart from each other in a circumferential direction and lined up in the circumferential direction, and
• wherein each of the two or more light source units is disposed at a position farther from the leading end portion than the camera module is in the longitudinal direction at which a portion thereof overlaps the camera module when viewed from a front in the longitudinal direction.

A camera head that has an elongated shape and is used for imaging an imaging area located in a vicinity of a leading end portion in a longitudinal direction, comprising:

• a camera module;
• two or more light source units disposed at positions farther from the leading end portion than the camera module is in the longitudinal direction;
• a light guide unit disposed radially outside an outer surface of the camera module and configured to guide light emitted from each of the two or more light source units to the vicinity of the leading end portion so that the imaging area is irradiated with the light;
• an imaging filter disposed at a position that is on a leading end side of the camera head and on a leading end side of the camera module so as to cover a front of a light receiving portion;
• an illumination filter disposed at a position that is on a leading end side of the camera head and on a leading end side of the light guide unit;
• and
• a light blocking structure provided between the imaging filter and the illumination filter and configured to block light,
• wherein at least two light source units of the two or more light source units are disposed at different positions in the longitudinal direction, and
• wherein the light guide unit includes two or more optical fibers respectively corresponding to at least two light source units of the two or more light source units, and the two or more optical fibers are disposed around the camera module so as to be spaced apart from each other in a circumferential direction and lined up in the circumferential direction.