Endoscope system and capsule endoscope

An endoscope system, comprising:

• a capsule endoscope provided for being placed into and movable in a biological body, wherein the capsule endoscope includes:
• a capsule shell having a light-guiding structure and an observation end portion, wherein the capsule shell has a light input surface and a light output surface that is opposite to the light input surface, and the observation end portion corresponds in position to the light output surface;
• a magnetic attraction member arranged inside of the light-guiding structure;
• a camera module arranged inside of the light-guiding structure and facing toward the observation end portion;
• and
• a light emitting diode (LED) module arranged inside of the light-guiding structure and facing toward the light input surface, wherein the LED module and the camera module are respectively located at two opposite sides of the magnetic attraction member, and wherein the LED module is configured to emit light that travels into the light-guiding structure by passing through the light input surface, and the light-guiding structure is configured to enable the light therein to travel onto and pass through the light output surface for scattering toward the observation end portion;
• a signal processing device electrically coupled to the capsule endoscope;
• and
• a wireless controller being not in contact with the capsule endoscope, wherein the wireless controller is configured to generate a magnetic field to control the magnetic attraction member of the capsule endoscope located in the biological body from outside of the biological body.