Small lamp and power supply assembly

摘要

A light source comprises a high intensity lamp that is clamped between four half-shell finned heatsinks. The upper heatsink half-shells for the anode and cathode ends of the lamp are mounted to an upper printed circuit board and the lower heatsink half-shells are mounted to a lower main printed circuit board. A direct current powered fan is positioned on one side to blow horizontally through the matrix of heatsinks and out the opposite side. Only the lamp igniter and fan power supply circuits are included in the upper printed circuit board which receives lamp power from the lower printed circuit boards through the anode and cathode heatsinks and one additional connection comprising a flexible wire. The main power supply is included on the lower printed circuit board and it converts and preregulates 110 VAC or 220 VAC to 160 VDC to a transistor chopping switch that in turn provides the required low voltage lamp power. A cooling ring is mounted to the front of the lamp and includes a tilted hot mirror that reflects infrared light back to the lamp but off-axis five to ten degrees to improve lamp life. A fiberoptic cable adapter and backing ring are mounted and optically aligned in front of the lamp such that the fiberoptic cable adapter can be changed from the outside without affecting the optical pre-alignment. The whole is packaged in a housing that assists the fan in cooling the lamp by directing airflow through the heatsinks.