Multispectral imager based on liquid zooming technology

The invention discloses a multispectral imager based on a liquid zooming technology. The multispectral imager comprises an optical filter array, a front optical system, a liquid zooming lens array, a detector and a liquid zooming lens control module, wherein the optical filter array is placed on the front surface of the front optical system, an imaging target and the liquid zooming lens array meet an object image relationship through the front optical system, the main surface of the front optical system and the detector meet an object image relationship through the liquid zooming lens array, and the liquid zooming lens control system is used for realizing digitalized programming control of the focus length of each lens in the liquid zooming lens array. The multispectral imager is capable of eliminating a mechanical focusing mechanism in a multispectral imaging system based on a micro-lens array, and thus the complexity of a system structure is reduced, the stability of the system is enhanced, the response spe