Semiconductor light source apparatus and lighting unit

A semiconductor light source apparatus, comprising:

• a motor having a rotation axis structure;
• a substrate having a mounting surface and a rotation axis structure, and the rotation axis structure of the substrate being connected to the rotation axis structure of the motor so that the mounting surface of the substrate is rotated in a plane by the motor, the plane being at a substantially right angle with respect to the rotation axis structure of the substrate;
• at least one phosphor layer disposed on the mounting surface of the substrate via an adhesive material, and the at least one phosphor layer composed of at least one of a glass phosphor and a phosphor ceramic which includes substantially no resin component;
• and
• a semiconductor light source having an optical axis and a light-emitting area, the semiconductor light source located adjacent to the at least one phosphor layer so that the optical axis of the semiconductor light source intersects with the mounting surface of the substrate at an angle between 0 degrees and 90 degrees while the light-emitting area of the semiconductor light source is located on the at least one phosphor layer to wavelength-convert light emitted from the semiconductor light source by the at least one phosphor layer, and wherein the light source is configured such that light emitted from the semiconductor light source travelling along the optical axis changes direction toward the at least one phosphor layer after being reflected from at least one of the substrate and the adhesive material.

A semiconductor light source apparatus, comprising:

• a motor having a rotation axis structure:
• a substrate having a mounting surface and a rotation axis structure, and the rotation axis structure of the substrate being connected to the rotation axis structure of the motor so that the mounting surface of the substrate is rotated in a plane by the motor, the plane being at a substantially right angle to the rotation axis structure of the substrate;
• at least one phosphor layer disposed on the mounting surface of the substrate via an adhesive material and including a cutaway so as to expose a part of the substrate from the at least one phosphor layer, and the at least one phosphor layer composed of at least one of a glass phosphor and a phosphor ceramic including a substantially no resin component;
• and
• a blue light-emitting device having an optical axis and a light-emitting area, the blue light-emitting device located adjacent to the at least one phosphor layer so that the optical axis of the blue light-emitting device intersects with the mounting surface of the substrate at an angle between 0 and 90 degrees while the light-emitting area of the blue light-emitting device is located on the part of the substrate exposed from the at least one phosphor layer to reflect blue light emitted from the blue light-emitting device, and the light-emitting area of the blue light-emitting device is located on the at least one phosphor layer to wavelength-convert blue light emitted from the blue light-emitting device by the at least one phosphor layer;
• and the blue light-emitting device is configured such that light emitted along the optical axis of the blue light-emitting device changes direction toward the at least one phosphor layer after being reflected from the substrate.

A semiconductor light source apparatus, comprising:

• a motor having a rotation axis structure;
• a substrate having a rotation axis structure and including a cavity having a bottom surface, and the rotation axis structure of the substrate being connected to the rotation axis structure of the motor so that when the motor is operated, the bottom surface of the cavity is rotated in a rotational plane that is at a substantially right angle to the rotation axis structure of the substrate;
• at least one glass phosphor layer disposed adjacent the bottom surface of the cavity of the substrate;
• and
• a semiconductor light source having an optical axis and a light-emitting area, the semiconductor light source located adjacent to the at least one glass phosphor layer so that the optical axis of the semiconductor light source intersects with the bottom surface of the cavity of the substrate at an angle between 0 and 90 degrees while the light-emitting area of the semiconductor light source is located on the at least one glass phosphor layer to wavelength-convert light emitted from the semiconductor light source by the at least one glass phosphor layer, and wherein the semiconductor light source is configured such that light emitted from the semiconductor light source and travelling along the optical axis of the semiconductor light source changes in direction toward the at least one glass phosphor layer after being reflected from the bottom surface of the cavity of the substrate.