Fabrication and Testing of Long Wavelength Optical Materials and Components.

摘要

The effort in this program was directed towards two primary objectives. The first was to study the problems associated with the definition, assessment and maintenance of quality in infrared optical elements and to recommend suitable test and evaluation procedures. The second was to document the procedures employed by the Frankford Arsenal for the grinding and polishing of germanium lenses. Based on a survey of recent literature and on conversations with lens fabricators and optical equipment manufacturers, optical quality for imaging and non-imaging systems has been defined in terms of specific performance criteria and physical parameters. Techniques and equipment which represent the current state-of-the-art and which are suitable for obtaining quantitative and objective measurements of the various aspects of optical quality in a production process have been identified. A draft specification for optical quality germanium is included. Personnel of the Frankford Arsenal optical shop were interviewed to document the equipment, material and procedures which are currently in use at Frankford Arsenal for the fabrication of germanium lenses. (Author)