A stereomicroscopy system is disclosed for viewing an object andor an intermediate image produced of an object, in microsurgery. The coating comprises a collagen matrix mineralized with calcium phosphate. Darkfield radiation is provided by two adjustable height laser beams which illuminate the surface of the wafer from approximately 6 to 39 degrees. The method includes subjecting the at least partially leached PCD table and a substrate to a second HPHT process effective to at least partially infiltrate the at least partially leached PCD table with a cobalt-based alloy infiltrant having a composition at or near a eutectic composition of the cobalt-based alloy infiltrant. This can allow the driver to figure out the driving skill thereof, and improve the driving skill. The p-type layer structure with a layer of p-type nano-dots imbedded therein provides good vertical conductivity and UV transparency.