Patent ID: 8422523
Filing Date: 2013-04-16
Classification: H01S,H04N

Abstract:
1. A laser light-source apparatus comprising: a circuit board; a thermal insulation spacer placed on the circuit board; a heat receiving plate that is placed on the thermal insulation spacer, and thermally separated from the circuit board; a laser light-source module that is mounted on the heat receiving plate so as to be thermally connected to the heat receiving plate, and driven by being electrically connected the circuit board; a heat sink that is thermally connected to the heat receiving plate via a first heat pipe and a second heat pipe, the first heat pipe being partially set in grooves in both the heat sink and heat receiving plate, and the second heat pipe connected to the heat sink and said heat receiving plate so as to be orthogonal to the first heat pipe; and a holder plate that holds the heat sink so as to be positioned higher than the heat receiving plate, wherein the first heat pipe and second heat pipe respectively contains water as a coolant in a decompressed state; the heat receiving plate is configured to evaporate the water with heat generated thereby so as to move the water upward inside the first heat pipe and second heat pipe; and the heat sink is configured to condense the evaporated water in the vicinity thereof so that the heat is transported from the heat receiving plate to the heat sink, and to return the condensed water again toward the heat receiving plate due to the difference in the height between the heat sink and the heat receiving plate.