Adjusting device for optical lens in narrow space

The utility model discloses an adjusting device for an optical lens in a narrow space, which comprises a Y-direction fixed base frame detachably and fixedly connected with an external interface piece of an optical system; the optical element positioning seat is used for supporting and positioning the optical element; the X-direction fixed foundation frame is adjustably connected with the Y-direction fixed foundation frame in the Y direction; the X-direction guide rail is fixedly connected with the X-direction fixed foundation frame, the X-direction sliding block is in relative sliding fit with the X-direction guide rail, and the optical part positioning seat is fixedly connected with the X-direction sliding block; the Y-direction guide rail is fixedly connected with the Y-direction fixed foundation frame, and the Y-direction sliding block is matched with the Y-direction guide rail in a relative sliding mode. According to the device, the relative matching relation between the X-direction sliding block and the