The Furukawa Electric Co., Ltd.

Kenichi Namba

Masaaki Yamamoto

Shu Namiki

Yuichi Kimura

Jun Niekawa

Shinya Nagamatsu

A light source including at least one laser diode module and a heat pipe having a heat absorbing portion and a heat radiating portion. The laser diode module includes a metal substrate mounting a laser diode chip and an optical component, and a peltier device thermally connected with the metal substrate. The heat absorbing portion of the heat pipe is thermally connected with the peltier device. The light source preferably includes a plurality of densely placed laser diode modules, each of which has an output of at least 100 mW. The light source also preferably includes a plurality of heat pipes having heat radiating fins on the heat radiating portions thereof.

Light source comprising laser diode module

A flat type heat pipe for mounting a heating power element, which is capable of forming an optionally shaped heat transferring path with high accuracy, which is of a thin type and to which fins are easily attached. The flat type heat pipe includes at least two aluminum plates substantially in parallel with each other and brazed to each other so as to form a heat transferring path therebetween. The flat type heat pipe also includes an operating liquid which fills the heat transferring path. Because the heat transferring path is formed by means of press molding, punching, laser beam machining, or cutting various shapes of heat transferring paths can be formed finely and with high accuracy. The flexible flat type heat pipe can be made thin, which allows for a variety of uses. Grooves and wicks can be disposed in the heat transferring path, thereby improving the heat conductivity. Because the surface is flat, the fins can be easily attached thereto, thereby a satisfactory radiation effect can be obtained.

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Tokyo, Japan

Kenichi Namba