Patent ID: 6206527
Filing Date: 2001-03-27
Classification: G02B,G02F

Abstract:
Device for oblique light irradiation which comprises:a lamp for emitting irradiation light which contains UV radiation;a focusing mirror positioned in an optical path of the irradiation light emitted by the lamp for focusing the light from said lamp;an integrator lens positioned to receive light focused by said focusing mirror;a collimator which converts light emerging from the integrator lens into parallel light;a flat mirror positioned to receive light from said collimator; anda mirror drive device for driving the flat mirror in a linear direction and an angular direction,wherein angling of the flat mirror is changed by the mirror drive device at the same time that the flat mirror is moved in a direction in which a length of the optical path of the irradiation light is variable, so that an angle by which light is reflected by the flat mirror and at which the light is obliquely incident on a workpiece is variable.