Patent ID: 8851694
Filing Date: 2014-10-07
Classification: F21S,F21V,F21W,F21Y

Abstract:
1. A semiconductor light source apparatus, comprising: a phosphor layer having a top surface, a bottom surface, an inner surface, an outer surface, a cavity, a top edge located between the top surface and the outer surface and a bottom edge located between the bottom surface and the outer surface, and including at least one phosphor material, the at least one phosphor material configured to convert at least one energy of blue light and ultraviolet light into light having a wavelength, the top surface including at least one of a planar surface, a convex surface and a concave surface, the bottom surface having a ring shape, the cavity defined at least in part by the inner surface of the phosphor layer, an opening surrounded by the bottom surface and an end of the cavity located opposite the opening, and the cavity configured to narrow from the opening toward the end of the cavity; a clad layer having a first opening, a second opening and an inner surface, and configured in a ring shape, the inner surface of the clad layer including a reflective material and being located adjacent the outer surface of the phosphor layer, the first opening of the clad layer located adjacent the top edge of the phosphor layer, and the second opening of the clad layer located adjacent the bottom edge of the phosphor layer; and a semiconductor laser diode having an optical axis and configured to emit a laser light including at least one of a blue light and an ultraviolet light when the semiconductor laser diode operates, the optical axis of the semiconductor laser diode intersecting with the inner surface of the phosphor layer at an intersection location so that a first portion of the laser light enters into the phosphor layer at the intersection location and a second portion of the laser light is reflected by the inner surface of the phosphor layer, wherein the inner surface of the phosphor layer is configured to again receive and allow entry of at least a part of the second portion of the laser light at a location closer to the end of the cavity in the phosphor layer than the intersection location.