Imaging system using array lens to realize polarization detection

Provided is an imaging system using an array lens to realize polarization detection. The system comprises a light gathering optical system, a first array lens (6), an array polaroid (12), and a receiving image surface (13). The first array lens (6) is a 2*2 array formed by four same plus lenses. The first array lens (6) is on the diaphragm position of the system. The array polaroid (12) is a 2*2 array formed by four polaroids in different polarization states. A target incident ray is firstly gathered on the diaphragm position through the light gathering optical system. The first array lens (6) divides full-field light beams gathered on the diaphragm position into four beams. The array polaroid (12) performs different polarization state processing on the four beams of light, and linearly polarized lights in four polarization directions of 0 DEG, 45 DEG, 90 DEG, and 135 DEG are formed, and then the lights form imaging on the receiving image surface (13), so as to form four images of a same target in different polarization states. The system can realize large view field and high precision polarization detection on the premise of not increasing load volume weight.