Patent ID: 7501602

Claim:
An optical path axis aligning device of a laser beam machine having an optical path with multiple mirrors for transmitting a laser beam from a laser oscillator to a machining torch, comprising: a laser beam detecting device located at a mirror position to which the laser beam is irradiated; a personal computer for receiving laser beam data detected by the laser beam detecting device, subjecting the same to image processing, and displaying the same on a screen; and a mirror from which the laser beam is irradiated, the tilt angle of the mirror being aligned based on the data displayed on the personal computer, wherein the laser beam detecting device comprises: an adaptor for attaching the laser beam detecting device at a desired center position of the optical path of the laser beam machine; a beam splitter for splitting and branching the laser beam passing through the adapter; a beam absorber for absorbing a high-power beam split by the beam splitter; and a detecting element for receiving the laser beam passing an optical system for converting a low-power beam split by the beam splitter to have a beam width and energy suitable for detection.