In Denmark, !%Foss A/S%! of Hillerød has become the main shareholder in !%6423%%Ibsen Photonics A/S%! of Farum through the purchase of an additional 73 percent of shares from existing shareholders. Foss now owns about 85 percent of Ibsen, and the investment reflects a growing partnership over the past few years between the two companies. Privately owned Ibsen makes holographic, fused-silica transmission gratings and spectrometer modules for telecom, analytical, sensing and laser applications. Family-owned Foss uses Ibsen products in its analytical instruments and, by becoming the main shareholder, the company said, ensures the continued supply of high-quality spectrometers.