Patent ID: 7201499

Claim:
A vehicle lamp unit comprising: a light emitting element disposed near or on an optical axis extending in a longitudinal direction of the lamp unit so as to be directed forward; a light transmitting member covering the light emitting element from a front side of the light emitting element, wherein a frontal surface of the light transmitting member comprises an ellipsoid of revolution having a center axis on the optical axis and a rear primary focal point at a point near the light emitting element on the optical axis, the light transmitting member comprises a light emitting surface on a central region on the frontal surface positioned near the optical axis and a light reflecting surface on a circumferential edge region on the frontal surface positioned outer circumferentially of the central region, the light emitting surface emits light from the light emitting element forward, and the light reflecting surface internally reflects the light from the light emitting element so as to be directed towards a secondary focal point of the ellipsoid of revolution; and a reflector that is provided on a perimeter of the light transmitting member and reflects forward the light from the light emitting element which is internally reflected on the light reflecting surface on the circumferential edge region and is then emitted from the light emitting surface on the central region.