Coastal Optical Systems Inc. of West Palm Beach, Fla., and Liebmann Optical Co. of Easthampton, Mass., have merged. Both subsidiaries of Jenoptik AG of Jena, Germany, they will be known as Jenoptik Optical Systems Inc. and will be based in Jupiter, Fla. The new company will offer design and manufacturing capabilities for prototype optical assemblies as well as high-volume component manufacturing.