Light transmission device and computer system

The utility model relates to a light transmission device and a computer system. The light transmission device is used for transmitting a first light signal generated by a first light emitting unit, and comprises a light guiding unit with one end connected with the first light emitting unit, and used for transmitting the first light signal generated by the first light emitting unit to the other end of the light guiding unit, a light sensing unit connected with the other end of the light guiding unit and used for sensing the first light signal transmitted by the light guiding unit and generating a light sensed result, an a second light emitting unit coupled with the light sensing unit, used for generating a second light signal corresponding to the first light signal according to the light sensed result. By using the light transmission device and the computer system of the utility model, the transmission distance and efficiency can be improved, a light source signal can be transmitted effectively and correctly,