AXIOMATIC DESIGN OF A BEAM ADJUSTER FOR A LASER MARKER

The usage of a beam scanning type laser marker is rapidly increasing in the field of semiconductor equipment. A device called a “beam adjuster” is employed to adjust the visible diode laser, which points to the marking position for various settings. The device is very sensitive to manufacturing tolerances and assembling conditions. The axiomatic approach is applied to the design of the device. An existing design is analyzed based on the Independence Axiom, but the existing design is discovered to violate the axiom. Two new designs are proposed to satisfy the Independence Axiom. The Information Axiom is utilized to evaluate the designs, and the selected design has minimum information content. The significance of this research is that a full cycle of axiomatic design is applied to a real engineering product.