The grating adjustment mount adapter from LBTEK can be installed on Ø1-inch smooth-bore optical adjustment mounts. This assembly approach facilitates the adjustment of the pitch and yaw angles of the clamped grating. Morever, the adapter is characterized by a simple structure. By sliding the clamping blocks located above and below the adapter, the connecting screws on the rear side of the blocks can move along the machined slots, enabling height adjustment for the clamped grating and rectangular lenses. Tightening the two M3 connecting screws on the rear side secures the positions of the grating and rectangular lenses. This adapter adopts a three - point fixation mechanism, and its adjustable mounting system comprises two bottom contact lines and a top contact that utilizes a planar spring.