Patent ID: 8905590

Claim:
A lamp assembly comprising: a light source the rays of light from which emanate from the vicinity of a center line, the vicinity being defined as points located less than a maximum source radius from the center line, and which rays radiate predominantly into a sector of space having the center line as its vertex, a first plane that contains the center line defining a first boundary of the sector, and a second plane that contains the center line defining a second boundary of the sector, the sector being characterized by an included angle that is the angle traversing the sector between the first plane and the second plane; a reflecting surface disposed a distance greater than the maximum source radius from the center line, the cross-section of which reflecting surface is substantially constant in size, shape, and orientation in all planes perpendicular to the center line that intersect the light source, the reflecting surface exhibiting primarily specular reflectance of light, the reflecting surface extending to intercept light emitted at angles between the angle of the first plane bounding the sector and the angle of a cutoff plane within the sector, which cutoff plane contains the center line, the reflecting surface not intercepting light at angles between the cutoff plane and the angle of the second plane bounding the sector, the shape of the reflecting surface being such that light reflected by the reflecting surface adds, on an object surface, illumination that supplements the direct illumination by light not intercepted by the reflecting surface.