Patent ID: 8705033

Claim:
A multi-channel surface plasmon resonance sensor using beam profile ellipsometry, comprising: a vertical illumination focused-beam ellipsometer in which light is polarized, a part of the polarized light is focused to a metal thin film having multi-channels by using an objective lens part, and then the polarized light reflected from the metal thin film is detected so as to measure an ellipsometric phase change; a surface plasmon resonance (SPR) sensing part which is provided at the objective lens part of the focused-beam ellipsometer so as to generate surface plasmon resonance (SPR) according to an angle change of the polarized light; and a multi-channel flow unit which supplies a buffer solution containing a bio material binding to or dissociation from the metal thin film generating surface plasmon, wherein the SPR and the ellipsometric phase change by change in an angle and a wavelength are simultaneously detected, wherein the SPR sensing part comprises: a first lens which is a cylindrical shape converging lens for linearly focusing a part of the polarized light; and a second lens which is a single cylindrical lens or a group of cylindrical lenses that the metal thin film is deposited on a final surface of the second lens.