An optical coupling device and an optical coupling unit comprising the optical coupling device. The optical coupling device comprises a right angle reflecting prism (23) and an optical fiber movable connector (21). A reflecting surface of the right angle reflecting prism (23) is provided with a curved reflecting surface (24), so that rays of light transmitted by an optical fiber are gathered and reflected. The optical fiber movable connector (21) is fixed to the right angle reflecting prism (23), so that the rays of light transmitted by the optical fiber are incident on the curved reflecting surface (24) of the right angle reflecting prism (23).
