PROBLEM TO BE SOLVED: To provide a mist separator which dispenses with a waterproof structure by irradiating water with light to heat and evaporate the water thereby generating mist, efficiently forms water into mist and can be made compact.SOLUTION: The mist generator 1A includes: a light source 13 a water supply part 12 which has an irradiation surface 12a irradiated with the light from the light source 13 and which supplies the water to the irradiation surface 12a and a water storage tank 11 for replenishing the water to the water supply part 12. The light source 13 evaporates the water supplied to the irradiation surface 12a with the irradiation light and forms the water into mist.COPYRIGHT: (C)2009,JPO&INPIT【課題】光を照射して水を加熱し蒸発させてミストを発生させることで防水構造を不要とすると共に、ミスト化を効率的に行うができ、小型化も可能にする。【解決手段】ミスト発生装置1Aは、光源13と、光源13からの光が照射される照射面12aを有し、この照射面12aに水を供給する水供給部12と、水供給部12に水の補給を行う貯水タンク11とを備えている。光源13は、照射光によって、照射面12aに供給された水を蒸発させてミスト化する。【選択図】図1