Patent ID: 7726855

Claim:
A lamp unit of a vehicle lamp comprising: a projection lens disposed on an optical axis extending in a longitudinal direction of a vehicle; a light-emitting element disposed near the optical axis so as to face upward behind a rear focal point of the projection lens, the light-emitting element comprising a plurality of light-emitting chips disposed adjacent to each other in a vehicle width direction; a reflector disposed so as to cover the light-emitting element from above and to reflect light from the light-emitting element forward toward the optical axis; a mirror member provided between the reflector and the projection lens, the mirror member comprising an upward reflecting surface that upward reflects a portion of the reflected light from the reflector; and a diffusing and reflecting portion that diffuses and reflects the reflected light from the reflector and is formed in the upward reflecting surface so as to bridge over the optical axis in the vehicle width direction, wherein the diffusing and reflecting portion comprises a plurality of grooves extending in the longitudinal direction so as to be adjacent to one another in the vehicle width direction.