AUTOFOCUS LIGHT SOURCE MODULE

摘要

A case made of a magnetic material is provided on an LED serving as the source of light in an autofocus l ighting module employing a linear actuator for lens focus. The LED case serves as the yoke for the linear actuator by mounting a coil around the case and a magnet assembly around the coil. The coi l is mounted to a carriage which extends forward of the diode for a distance approximately equal to the minimum required distance between the lens and diode, and a lens assembly is mounted to the forward end of the carriage. Since this module will require only sufficient clearance in front of it to accommodate the full distance traveled by the lens, and total length it will occupy is essentially the minimum possible length.