Optical detection device for identifying counterfeiting of security and detection method thereof

The invention discloses an optical detection device for identifying the counterfeiting of a security and a detection method thereof. The optical detection device comprises two contact image sensors, three infrared sources and three ultraviolet sources; the two contact image sensors are respectively and oppositely arranged at both sides of the security to be detected; and an optical filter is arranged at the front end of each contact image sensor. According to the invention, the anti-counterfeiting is implemented by detecting the difference of a special printing material on the security on the adsorption rate for the ultraviolet light or the infrared light. Various detection modes, such as ultraviolet reflection, ultraviolet transmission, infrared reflection, infrared transmission and the like, are integrated in the same optical detection device, so that the range of the anti-counterfeiting detection is widened, the counterfeiting identification accuracy of a security counterfeiting identification technology i