The group's principal activities are to design, develop, manufacture and market optics and on-line yield enhancement solutions for the semiconductor and industrial manufacturing markets. the selected semiconductor and industrial manufacturing customers include bosch, canon, caterpillar, cummins engine, ibm, kla-tencor, nikon and svg. telecommunications customers include agilent, axsun, cidra, coherent, corning rochester photonics, lightchip, lucent, nortel networks, tyco and vytran. the group owns 98 united states and 50 foreign patents. industrial manufacturing components accounted for 48% of fiscal 2002 revenues; Semiconductor devices, 44% & telecommunication components, 8%.