Illumination system for fiber optic lighting instruments

摘要

The illumination system has primary and secondary light sources with a lamp current sensor control circuit for automatically switching from the primary lamp to the secondary lamp in the event the primary lamp fails. An illumination directing mirror is positioned between the light sources and directs one or the other of the light sources towards a fiber optic cable. The lamps are mounted on a movable carriage which is remotely controllable by a pneumatic cylinder. The carriage moves to alter the distance from the lamp to the port of the fiber optic cable. This controls the intensity of illumination entering the cable without changing the color temperature of the light.