Patent ID: 8012327

Claim:
A capillary electrophoresis apparatus comprising: an exchangeable capillary; an optical irradiation system including a light source which irradiates the capillary with excitation light; an optical detection system which has a wavelength dispersion device and a two-dimensional detector, the wavelength dispersion device dispersing fluorescent light from the capillary, the two-dimensional detector detecting a fluorescence spectrum image acquired from the wavelength dispersion device; a capillary position measuring light source which irradiates the capillary with a capillary position measuring light when the capillary is exchanged; and a filter including a band pass filter or long-pass filter positioned on the output side of the capillary position measuring light source, wherein when the capillary is configured to be irradiated with the light from the capillary position measuring light source, the two dimensional detector is configured to: detect a two-dimensional image of the capillary, set a plurality of data acquisition areas based on the position of the image of the capillary, and obtain a plurality of fluorescence spectrum images corresponding to a plurality of positions on the capillary from the plurality of data acquisition areas on the two-dimensional detector.