PROBLEM TO BE SOLVED: To develop influence reducing means for scattered powdered-medicine which is suitable for an imaging measurement method.SOLUTION: An imaging unit 23 is surrounded by a powdered-medicine incoming blocking member 30 and a transparent member 31 is used at a portion in an imaging direction. A wiping/sweeping member 32 for wiping or sweeping the transparent member 31 is attached. Oscillation interlocking mechanisms 33, 34 and 35 are used to transmit oscillation of an upper casing 20 to a base part 40, and thereby the wiping/sweeping member 32 is activated. When a detachable dust-collecting-path extension member 50 having a U-shaped upper end aperture 52 is attached to the base part 40, a lower end aperture 51 of the dust-collecting-path extension member 50 is communicated with an inlet port 44 of a dust collecting duct 43 at the base part 40, and furthermore, the upper end aperture 52 comes to a lower portion of the powdered-medicine incoming blocking member 30 and also comes closer to a hopper holding mechanism 41 and a retention hopper 42 with an on-off valve.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT