COMPACT LIGHT-MIXING LED LIGHT ENGINE AND WHITE LED LAMP WITH NARROW BEAM AND HIGH CRI USING SAME

摘要

The directional lamp includes a light source, a beam forming optical system configured to form light from the light source into a light beam, and an optical mixing diffuser configured to diffuse the light beam. The light source, the beam forming optical system and the optical mixing diffuser are fixed together as a single lamp. The beam forming optical system includes a condensing reflector having an entrance aperture for receiving light from the light source and an exit aperture larger than the entrance aperture and a lens disposed in an exit aperture of the condensing reflector . The light source is located along the optical axis of the beam forming optical system at a distance of +/- 10% of the focal length of the lens from the lens.