Light-field imaging system based on surface plasmon-coupled emission effect

The invention relates to a light-field imaging system based on the surface plasmon-coupled emission effect. The system comprises a light source unit, a laser projection unit, a detection unit, a calculation and control system and an objective table. Slide glass is arranged on the objective table. The light source unit generates laser and couples laser to the laser projection unit. The laser projection unit projects the laser to the slide glass. The system is characterized in that an illuminated face of the slide glass is covered with a nano-size metal film and a metal nanoparticle is adsorbed on the surface of the nano-size metal film; when the metal nanoparticle is positioned in a light field, the metal nanoparticle generates scattered light, and a component in the scattered light that satisfies SP wave vector matching condition generates a SPCE signal at the surface plasma resonance angle due to the surface plasmon-coupled emission effect; and the calculation and control system is used for making the metal nanoparticle to be located at different positions in the light field of the laser by moving the objective table, detecting intensity of the SPCE signal generated when the metal nanoparticle is located at each position through the detection unit and generating intensity distribution of the light field accordingly.