A vehicular lamp for use in an automobile, comprises: a light source module for generating light; an optical member operable to emit the light produced by the light source module out of the vehicular lamp; and a light source fixing member for fixing the light source module to a reference position a relative position of which with respect to the optical member is predetermined, wherein the light source module includes: a reference member which is fixed to be fitted to the reference position when the light source module is fixed to the optical member, a semiconductor light emitting element for emitting light from a lighting region that is predetermined; and a holding member for fitting a center of the lighting region to a position a relative position of which with respect to the reference member is predetermined, so as to hold the semiconductor-emitting light.

 
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> Apparatus and method for curing materials with radiation

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