Based on an unpublished revision of the standard reference in the German optics industry. Designed as a source of facts, data and definitions, it reflects state--of--the--art technology and current practices in the United States and abroad. Practical in nature, it presents optical engineers with comprehensive coverage of material, tool and design methods and testing of the final product. Easily accessible with tables, graphs and equations, it will help professionals quickly and accurately find the most suitable solutions to their optical challenges.