LIGHT BEAM DEVICE AND VEHICLE LAMP ASSEMBLY

The present application provides a light beam adjusting device and a vehicle lamp assembly. The light beam adjusting device (100,100') includes: a first optical deflection unit (10,10') having a first light incidence face (11,11') and a first light exit face (12,12'), the first optical deflection unit (10,10') being arranged to deflect a light which is incident from the first light incidence face (11,11') and exits from the first light exit face (12,12') at a first deflection angle; and a second optical deflection unit (20,20') having a second light incidence face (21,21') and a second light exit face (22,22'), the second light incidence face (21,21') being arranged to face the first light exit face (12,12'), and the second light incidence face (21,21') comprising an array of prisms (32) which are arranged to deflect the light exiting from the first light exit face (12,12') at a second deflection angle. The light beam adjusting device can obtain the desired deflection direction of the incident light beam by a compact structure by providing two-stages of optical deflection units to achieve the deflection of an incident light beam.