Patent ID: 8721142
Filing Date: 2014-05-13
Classification: B60Q,F21S

Abstract:
1. A vehicular lighting fixture for producing light in a desired pattern, comprising: a base member; a substrate mounted to said base member, said substrate being in thermal communication with said base member; at least one semiconductor light source mounted to said substrate, said at least one semiconductor light source being in thermal communication with said substrate; and at least one optical body mounted on said substrate and being operable for receiving light from said at least one semiconductor light source for producing a desired beam pattern, the optical body formed by two opposing side surfaces and a peripheral surface coupling edges of the two side surfaces to each other, the two opposing side surfaces having a general D-shape profile with a light receiving area formed by a portion of the peripheral surface along flat side of the D-shape profile and a light output area formed by a portion of the peripheral surface adjacent to curved side of the D-shape profile having a general D-shape profile with a flat surface of the D-shape serving as a light receiving surface, a curved surface of the D-shape serving a light output surface and two opposing side surfaces, wherein a dimension measured between the two opposing side surfaces increases with distance from the light receiving area surface to the light output area surface and is positioned at a distance from the light emitting surface that ensures rays of light enter the light receiving surface at an angle of no more than forty-five degrees.