LANTERN FOR LIGHTHOUSE BY USING A LASER DIODE AND PHOSPHOR POSITIONED AT THE PARABOLIC FOCUS

摘要

Disclosed is a lighthouse lantern. The lighthouse lantern comprises: a first reflector which has a parabolic cross-sectional shape vertically cut with respect to the circumference thereof, and a parabolic surface obtained by rotating the parabola around an axis of the parabola passing through a focus of the parabola defined as an inner surface, and is formed with an opening in a center part of the parabolic surface; a second reflector which has a focal point of the parabola defined as an apex, wherein the apex is in a cone shape inverted toward parabolic surface, and an outer surface of the cone shape is placed at 35 to 55 degrees with respect to the traveling direction of light reflected from the parabolic surface; a laser diode which is located under the second reflector, and has an output terminal outputting a laser disposed toward the opening to irradiate the laser toward the opening; a phosphor connected with the second reflector to be located at the apex of the cone shape, and emitting the light when the laser is incident; and a power supplying part supplying a power source to the laser diode.