Endoscope system

An endoscope system, comprising:

• a rigid endoscope, comprising an external lens tube and a connection housing;
• and
• a camera system, comprising a photographic objective lens group and an image sensor;
• wherein, the external lens tube comprises a first end and a second end, the connection housing is directly connected with the second end of the external lens tube, the photographic objective lens group is arranged on a side of the connection housing away from the external lens tube, and the image sensor is arranged on a side of the photographic objective lens group away from the connection housing,
• the camera system is detachably connected with the connection housing, the photographic objective lens group is configured to directly magnify and image an image transmitted by the rigid endoscope, and the image sensor is configured to convert the image as magnified into an electrical signal,
• no eyepiece group is provided in the rigid endoscope, the rigid endoscope further comprises:
• at least one light-emitting chip located at the first end of the external lens tube;
• an objective lens group located inside the external lens tube and at an end of the light-emitting chip close to the connection housing;
• and
• a rod lens group located inside the external lens tube and at an end of the objective lens group close to the connection housing,
• the connection housing comprises a power supply interface configured to be connected with the at least one light-emitting chip.