Spare disk drive management in a storage system. The objective lens is divided into two lens portions with respect to a direction transverse to a beam transmitting path and provided with a short-wave pass filter. Embodiments of this invention are particularly advantageous for use in the apparel industry, for example, in the manufacture of garments such as t-shirts. The semiconductor substrate, the insulating layer and the copper sheet are press-bonded by a press machine into a single block. 5 ins at 1000 psi and show no pressure slope break up to 8000 psi.