An object of the present invention is to provide a method and a device for constantly setting the energy distribution of a laser beam on an irradiating face, and uniformly irradiating the laser beam to the entire irradiating face. The instrument also includes a four-bar handle assembly attached to the housing for actuating a drive rod assembly. These carbon nanotubes can be grown from a sidewall of the catalytic metal layer. Strap clamps are integrated into the frame so as to permit the sections to be secured when folded closed.