Shadowless operation lamp with spot size automatically adjusted by sensing distance through radar

The invention provides a shadowless operation lamp with the spot size automatically adjusted by sensing the distance through radar. The shadowless operation lamp comprises a handle, a shell and lens modules, wherein the lens modules are arranged inside the shell and rotate around a fixed shaft relative to the shell; a motor, a worm, a worm jacket and the radar are arranged inside the handle; the lens modules are movably connected to the worm jacket through connectors, the worm drives the worm jacket to move vertically when rotating, the connectors and the lens modules rotate around the shell through the vertical movement of the worm jacket, and therefore the spot effect can be adjusted; the worm drives the worm jacket for adjusting the angles of the lens modules, in the actual use process, staff do not need to adjust the spot effect with extra time, the adjustment accuracy is high, the radar can detect the actual distance accurately and can feed back signals in time, and the motor drives the worm to rotate so