Spr device

An SPR device, comprising:

• a detection platform having a detection area and an optical component affixed to a top surface of the detection area, where the optical component includes a light-entering side and a light-exiting side for receiving an incident light and providing an output light correspondingly;
• a light source for generating the incident light;
• and
• an optical detector for receiving an output light;
• where the optical component includes an incident light guiding structure and a reflected light guiding structure, the incident light guiding structure including a first mirror assembly for guiding the incident light to the detection area along an oblique incident path, and the reflected light guiding structure including a second mirror assembly for guiding a reflected light from the detection area to provide the output light;
• where the detection area includes a slot and a detection module plugged in the slot, the slot having a light-transmissive top surface, and the detection module including, from top to bottom, a prism, an SPR excitation layer and a microfluidic chip.