| 摘要 |
PURPOSE:To prevent interrupting work after indication by causing an indicating device for performing surgical treatments by use of a computerized tomogram scanner or the like to split a beam of light into three parts or more and then to converge the beams to one point through a holed lens. CONSTITUTION:A beam L1 of light emitted from a semiconductor laser generator 10 is split into two beams L2, L3 of light by a beam splitter B1, the beam L2 is reflected at a mirror M1 and converted into a beam L4 parallel to the beam L3 and the beams L3, L4 are allowed to pass through respective beam splitters B2, B3. Therefore, beams L5, L6 of light going toward an objective lens 11 are each split and beams L7, L8 of light passing through the respective beam splitters B2, B3 are reflected at respective mirrors M2, M3 to form beams L9, L10. The four parallel beams L5, L6, L9, L10 are allowed to pass through the objective lens 11 having a jig through hole portion 11a and converge to a spot S at one point. |
