Black gold optical shaft

The invention specifically relates to a high-performance black gold optical shaft. The black gold optical shaft consists of an optical shaft matrix, a composite compound layer and a metal oxide layer, wherein the composite compound layer and the metal oxide layer are prepared by nitrogen-carbon-lanthanum ion impregnant, ion activation impregnant and oxygen ion impregnant permeated in the surface of the optical shaft matrix layer by layer. Because the surface of the black gold optical shaft is bright black, the black gold optical shaft is called as black gold; nonmetallic elements and trace metal elements are permeated in the surface of the optical shaft to form the composite compound layer and the metal oxide layer on the surface of the optical shaft, and an antiseptic wearing layer is formed on the surface of the optical shaft, so that the wear resistance and the corrosion resistance of the optical shaft are largely improved; and when oxygen ions are permeated, residual harmful ions on the surface of the opt