Abstract: An analyzing device 1 includes position detection marks 18, each having one of a reflective surface, a refractive surface, and a light shielding surface that block output light incident on a sensor 113 from a light source 12 when the output light reaches a rotation detection position just before or behind measurement spots 17a, 17b, and 17c of the analyzing device 1. Output signals from the sensor 113 for reading the measurement spots 17a, 17b, and 17c are stored in a memory 28, the positions of the measurement spots 17a, 17b, and 17c are determined based on light receiving data stored in the memory 28, and only a desired analyzing signal is extracted. Thus even when the number of measurement spots increases, it is possible to read the measurement spots without adding any components.

Abstract: An analyzing device 1 includes position detection marks 18, each having one of a reflective surface, a refractive surface, and a light shielding surface that block output light incident on a sensor 113 from a light source 12 when the output light reaches a rotation detection position just before or behind measurement spots 17a, 17b, and 17c of the analyzing device 1. Output signals from the sensor 113 for reading the measurement spots 17a, 17b, and 17c are stored in a memory 28, the positions of the measurement spots 17a, 17b, and 17c are determined based on light receiving data stored in the memory 28, and only a desired analyzing signal is extracted. Thus even when the number of measurement spots increases, it is possible to read the measurement spots without adding any components.

Abstract: The movement of a window can be optimally controlled by storing, in window memory, information indicating a movement made by a distance corresponding to a window size, thereby preventing duplicate detection of the same cell and eliminating the need for recapturing data every time the window size is changed. Thus, it is possible to provide a cell analysis apparatus which can obtain the number of desired cells with one data acquisition and conduct an accurate analysis in a short time.