Patent ID: 7933019

Claim:
A surface plasmon resonance sensor having a rotating mirror, comprising: (a) an incident light source unit for oscillating a laser as incident light; (b) a polarizer for polarizing the incident light; (c) a rotating mirror having cylindrical or plane shapes for reflecting the polarized incident light to radiate disk-shaped light, wherein the (c) rotating mirror having a cylindrical shape is manufactured by adhering two half-cylindrical prisms, in which a flat surface of either of the two half-cylindrical prisms is coated with a metal; (d) a light shielding film for allowing part of the disk-shaped light to pass therethrough and located adjacent to a central axis of the rotating mirror; (e) a cylinder lens for focusing the light passed through the light shielding film thereon; (f) a metal thin film for receiving the light focused on the cylinder lens to generate surface plasmon resonance; (g) a dielectric medium provided under the metal thin film; and (h) a detector for detecting an image corresponding to a minimal intensity of the light reflected from the metal thin film, thereby measuring a resonance angle in real time.