| 摘要 |
Apparatus and method for focusing a laser. Embodiments of the invention provide a multiple focal mirror device having at least a first reflective surface and a second reflective surface and a light condensing device. An incident laser beam is reflected from each of the reflective surfaces to produce resultant, respective partial laser beams. The partial laser beams are directed to the light condensing device which operates to focus the partial laser beams according to respective focal points of the partial laser beams, the focal points being different from each other. |
