Magnification feedback lens based on variable resistance form

The utility model discloses a magnification feedback lens based on a variable resistance form, which comprises an outer cylinder, an eyepiece assembly is fixed at the upper end of the outer cylinder,an objective lens assembly is fixed at the lower end of the outer cylinder, the eyepiece assembly is fixedly connected with the objective lens assembly through an inner lens cylinder, and a zooming linkage assembly is movably connected to the inner lens cylinder. The zooming linkage assembly comprises a rotating assembly which is rotatably arranged outside the inner lens cone in a sleeving mode, asignal feedback assembly is arranged at the upper end of the rotating assembly, and the signal feedback assembly moves up and down to feed back and output the multiplying power of the zooming linkageassembly in a variable resistance mode. The multiplying power feedback circuit outputs multiplying power feedback in a variable resistance mode, and the multiplying power feedback precision and the anti-electromagnetic interfe