Patent ID: 7253886

Claim:
An analysis device for irradiating with detection light an analysis disc having an analysis object therein, and for reading a state of such an analysis object, wherein the analysis device configured for receiving an analysis disc in which a first reading area having an analysis object therein and a second reading area not having an analysis object therein are recorded, respectively, in different diameter ranges, the analysis device, comprising: a first pickup for irradiating the first reading area of an analysis disc with detection light and detecting detection light from the first reading area, and a second pickup for irradiating the second reading area of an analysis disc with detection light and detecting track information from detection light of the second reading area, wherein means for controlling the device to keep a constant interval in a radial direction of the analysis disc between the first pickup and the second pickup, and to move the first and second pickups in the radial direction, and means for supplying a tracking signal to a tracking actuator of the second pickup so as to drive an optical path of the second pickup in the radial direction of an analysis disc and trace a track, and a signal identical to the tracking signal of the second pickup is applied to a tracking actuator of the first pickup for driving an optical path of the first pickup in the radial direction of an analysis disc, so that an analysis object is read.