The present invention concerns a method of synthesizing fluoxetine hydrochloride. The filter element has a spatially varying X-ray absorption capability along a cross direction which is perpendicular to both the beam axis of the X-ray beam and to a rotation axis of a gantry. The system for assembling the optical module further includes a stage having the light-emitting element mounted thereon, a holding mechanism configured to hold and position the optical components to desired positions based on the measurements from the FFP andor NFP optical measurement systems. The fore-end portion of the antenna is made to be displaceable outwardly in the tire radial direction by centrifugal force generated in the rotation of the tire. The second pattern region includes second phase-shifting and transparent parts.