Composite double opposite-transmission photoelectric sensor and corresponding security inspection device

The invention discloses a composite double opposite-transmission photoelectric sensor and a corresponding security inspection device. The photoelectric sensor comprises an A-end module and a B-end module, and the A-end module and the B-end module respectively comprise a transmitting circuit and a receiving circuit; the transmitting circuit of the A-end module is configured to emit modulated lightto the receiving circuit of the B-end module to form a path of opposite-transmission optoelectronic detection; the transmitting circuit of the B-end module is used to emit the modulated light to the receiving circuit of the A-end module to form another path of opposite-transmission photoelectric detection; the receiving circuits of the A-end module and the B-end module are oppositely arranged, sothat the directions of the modulated light of the two paths of opposite-transmission photoelectric detection are opposite. The sensor and the inspection device in the invention not only can meet the requirement for double-path