Lens cone

The utility model relates to a lens cone, including main part (1), follow for the cavity column body main part (1) the axial of main part (1) main part (1) one end is and has set gradually annular protruding (11) on the terminal surface that the slope set up, being provided with on the surface of annular protruding (11) rough surface structure (2). The lower extreme of main part is the one end ofbeing close to imaging lens, it is protruding to set up a plurality of annulars on the terminal surface that the slope of main part lower extreme set up, thereby make the surface of terminal surface form the different interlacing structure of height, and then effectively solved the terminal surface and leaded to having the problem than high reflectivity for smooth surface, protruding and set up the mode that the rough surface structure combined together on annular bellied surface through set up the annular on the terminal surface, thereby the effectual terminal surface that has improved the lens cone lower extreme res