Thermoelectric Cooling Driver for Laser Projection Systems

Abstract

In this paper, we present our new design of a thermoelectric cooling driver for laser projection systems. It is a reliable, effective cooling solution for semiconductor laser diodes that are used instead of traditional displays or projectors when higher brightness or contrast is required. Typical applications are multimedia shows, quality improvement in production facilities or marketing in public areas. The laser animations usually require rapid changes in the output power that are difficult to predict. Our driver is capable of reacting to them by actively pumping the excess power generated by the diodes into the main heatsink of the system. The heat transfer speed is regulated by the driver in real time to maintain an optimum working temperature.