Ultraviolet, visible and near-infrared light three-band optical imaging system

The invention discloses an ultraviolet, visible and near-infrared light three-band optical imaging system relating to an optical imaging system. The invention solves the problems of poor imaging quality of each waveband, low image resolution and large system volume and difficulty in meeting the strict requirement of the system volume because incident light beams of the traditional multi-band imaging system pass through the same optical lens subassembly and decomposed by using a prism. A target light beam transmits through a glass window to a three-band decomposition prism, reflects an ultraviolet light beam on a first gluing surface of the three-band decomposition prism and then enters an ultraviolet band system to form a target ultraviolet band image; the transmitted visible light beam and near-infrared light beam enter a visible light band system after the visible light beam is reflected by a second gluing surface to form a target visible light band image; and the transmitted near-infrared light beam enters to a near-infrared band system to form a target near-infrared band image. The ultraviolet, visible and near-infrared light three-band optical imaging system can obtain image information of a target in three bands at the same time, and is suitable for the field of industrial detection.