Centrifugal Separator and Analyzer with the Same

The present invention relates to a centrifugal separator including a rotor ( 51 ) which is to be rotated to apply a centrifugal force to a container ( 9 ) and which includes a detection target portion ( 57 ) utilized for detecting a particular portion of the rotor ( 51 ), and also relates to an analytical apparatus provided with the centrifugal separator. The detection target portion ( 57 ) is so designed as to cause outputting of at least three kinds of signals which are distinguishable from each other. For instance, the detection target portion ( 57 ) includes a first detection target region ( 57 A) having a higher reflectivity than a surface of the rotor ( 51 ), and a second detection target region ( 57 b) which reflects light in a manner different from the surface of the rotor and the first detection target region ( 57 A). For instance, the second detection target region ( 57 b) includes a plurality of linear portions ( 57 Ba) regularly spaced from each other.