Patent attributes
A detection device including a light guide element, a sensing element, a surface plasma resonance layer and a spatial filter element is provided. The light guide element has a top surface and a bottom surface opposite to the top surface. The sensing element is disposed beside the bottom surface of the light guide element. The surface plasma resonance layer is disposed on the top surface of the light guide element and is adapted to receive biopolymers. The spatial filter element is disposed between the bottom surface of the light guide element and the sensing element. The spatial filter element has a plurality of first light channels and a plurality of second light channels. The plurality of first light channels extend in a first direction, the plurality of second light channels extend in a second direction, and the first direction and the second direction are intersected. A normal direction of the top surface of the light guide element and the second direction form an included angle β, and the included angle β corresponds to a resonant angle γ of the surface plasma resonance layer.
