Patent ID: 8262888
Filing Date: 2012-09-11
Classification: G01N

Abstract:
1. A capillary electrophoresis apparatus; comprising: a single exciting light source; two capillary arrays, each consisting of a plurality of capillaries having irradiated parts adapted to be irradiated with exciting light and arranged in parallel on a plane in such a way that the irradiated parts of capillaries contained in each array are arranged in parallel with each other on the same plane; a beam splitter configured to split light from the single exciting light source; a first reflector configured to lead a first light from the beam splitter in a first direction to a first irradiated part, and second and third reflectors configured to lead a second light from the beam splitter to a second irradiated part from a second direction mutually opposite to the first direction, wherein, each of the reflectors is adapted to irradiate the irradiated parts with exciting light in such a manner that the exciting light passes through the irradiated parts of all the capillaries included in a respective capillary array; light cutoff means arranged between the irradiated parts of the capillaries of the two capillary arrays, wherein the light cutoff means is configured to prevent light from entering an adjacent capillary array; and one optical detection system arranged in a direction perpendicular to a plane where the irradiated parts of the capillaries contained in the two capillary arrays are arranged, the optical detection system being adapted to detect light emission generated by the capillaries contained in the two capillary arrays, wherein: each of the capillary arrays is individually removable, the irradiated parts of the two capillary arrays are positioned across an optical transmission central axis of the optical detection system as viewed from above, such that one irradiated part is positioned on one side of the central axis and another irradiated part is positioned on the other side of the central axis, the light cutoff means prevents transmitted light that has traveled through one of the capillary arrays from entering the other of the capillary arrays, in simultaneously detecting light emission at the optical detection system, both of the capillary arrays are in a state where they are fixed to the capillary electrophoresis apparatus, and signal intensities of all of the capillaries used for measurement vary by 0.13 or less.