Optical device

The embodiment of the utility model provides an optical device which can be applied to an FTTR scene. The optical device comprises a circuit board, an optical transceiver assembly and a shell part, wherein the optical transceiver assembly is arranged on the circuit board; the optical transceiver assembly comprises a main body, an optical transmitting end device and an optical receiving end device, the main body, the optical transmitting end device and the optical receiving end device are all accommodated in the shell part, the main body comprises a top, a bottom and a side part, the top, the bottom and the circuit board are arranged along a first direction, and the side part is connected between the top and the bottom; the side part comprises a first mounting end, a second mounting end and a third mounting end; the first mounting end is connected with the light emitting end device, and the light emitting end device is connected with the shell part in the first direction; the second mounting end is used for being connected with a light receiving end device, and the light receiving end device is connected with the shell part in the first direction, so that the risk that a seesaw effect is formed between the light emitting device and the tail sheath due to overlarge pressure is reduced, and the light transmission quality of the optical device is improved.