LIGHT PROJECTOR

摘要

A light projector (1) includes a light source (130), a first parabolic reflector (20), and a second parabolic reflector (110). The first and second parabolic reflectors each have a center point (40) which lies in a common axis with the light source and the first parabolic reflector has a circumference which is smaller than a circumference of the second parabolic reflector. The first parabolic reflector and the light source are movable along the common axis relative to the second reflector and the light source is maintained at a distance from the first parabolic reflector that is equal to the focal distance of the first parabolic reflector. The light projector may also include a redirecting reflector (140) disposed between the light source and the first and second parabolic reflectors such that substantially all of the light emitted from the light sources is incident on one of the first parabolic reflector, the second parabolic reflector and the redirecting reflector, and the light incident on the redirecting reflector is refcted onto on of the first and second parabolic reflectors. Alternatively, the redirecting reflector may be employed in a light projector having a signal parabolic reflector.