Patent ID: 6670616
Filing Date: 2003-12-30
Classification: G03F,H01L

Abstract:
An ultraviolet-light irradiation apparatus comprising:a plurality of low-pressure mercury lamps arranged in parallel; a placement stage provided under the low-pressure mercury lamps so that an object onto which an ultraviolet light emitted by the low-pressure mercury lamps is irradiated is placed on the placement stage; a reflective mirror arranged above the low-pressure mercury lamps so as to reflect the ultraviolet light emitted by the low-pressure mercury lamps; and an exhaust passage defined by the reflective mirror, the exhaust passage suctioning air around the low-pressure mercury lamps and exhausting the suctioned air to outside, wherein said reflective mirror has a plurality of openings arranged along a longitudinal direction of the low-pressure mercury lamps, and some of the openings have a size different from a size of other openings; and wherein said exhaust passage has a closed end and a suction end opposite to the closed end along a longitudinal direction thereof so as to suction air through said openings by exhausting the air from the suction end, and the size of said openings gradually increases from the suction end toward the closed end of said exhaust passage.