Patent ID: 9667030
Date: 2017-05-30
CPC Classifications: H01S

Claim:
1. A laser apparatus comprising: a laser oscillation part including a heat receiving part to which heat generated by a laser light source is transmitted; a housing in which the laser oscillation part is arranged; an air cooling machine having a heat absorption part which absorbs heat of internal air of the housing; a dehumidifier having a low temperature part and a high temperature part whose temperature is higher than the low temperature part; and a cooling water supply device including a cooling water pipe through which a cooling water is supplied to the heat receiving part, the heat absorption part and the high temperature part, wherein the air cooling machine and the dehumidifier are arranged in the housing, the housing has a sealed structure in which the internal space is substantially sealed, the cooling water pipe is branched so that the heat receiving part, the heat absorption part, and the high temperature part are connected in parallel, and the cooling water supply device supplies a common cooling water of the same temperature to the heat receiving part, the heat absorption part, and the high temperature part.