Patent ID: 7029562

Claim:
A method for analyzing samples comprising the steps of: introducing fluorephore-labeled samples into plural capillaries having fluorescence detecting parts which are arranged in a same plane; separating said fluorephore-labeled samples by electrophoresis within said plural capillaries; irradiating said plural capillaries by a laser source; scanning said plural capillaries using a laser beam from said laser source, a scanning period being t 1 ; and detecting fluorescence emitted by said fluorephore labels using a lens to collect fluorescence from said fluorephore-labeled samples, a detecting period being t 2 , wherein an equation t 1 ≦t 2 is satisfied, and the laser beam is irradiated at an angle θ 0 , θ 0 being ≦90° and being an angle between the laser beam and the plane, and the fluorescence is detected at an angle θ 3 , θ 3 being ≦90° and being an angle between a central axis of said lens and the plane.