LIGHT EMITTING DEVICE

To provide a light emitting device (50, 50A) and a leaning vehicle (10, 10A) including the light emitting device, the light emitting device (50, 50A) being capable of suppressing occurrence of bright/dark contrast in a light emission area (71R, 71R1-71R3, 71L, 71L1-71L3) while the light emission area becomes larger. A control device (90, 90A) causes the quantity of light outputted from at least one light source (72, 72L, 72R) included in a first cornering lamp (70L) to vary in accordance with the lean angle of a vehicle body such that a single left-front light emission area ( 71L, 71L1-71L3 ) becomes larger as the lean angle of the vehicle body increases, the single left-front light emission area being formed on a road surface at the left-front of the vehicle body by light outputted from the at least one light source included in the first cornering lamp when the leaning vehicle turns left. The control device causes the quantity of light outputted from at least one light source included in a second cornering lamp (70R) to vary in accordance with the lean angle of the vehicle body such that a single right-front light emission area ( 71R, 71R1-71R3 ) becomes larger as the lean angle of the vehicle body increases, the single right-front light emission area being formed on a road surface at the right-front of the vehicle body by light outputted from the at least one light source included in the second cornering lamp when the leaning vehicle turns right.