Accession Number : AD0282239

Title :   INVESTIGATION OF LONG WAVELENGTH INFRARED GLASSES.

Descriptive Note : Interim engineering rept. no. 1, 16 Apr-15 Jul 62,

Corporate Author : SERVO CORP OF AMERICA HICKSVILLE N Y

Report Date : 15 JUL 1962

Pagination or Media Count : 23

Abstract : Information on infrared transmitting glasses is presented. This information consists of composition-property data obtained on new glasses selected from the As-S-Se-Te field. Part I is essentially a property measurement section designed to determine selected optical, thermal and physical properties on 20 different glass compositions. Samples were selected from a collection of proprietary glasses developed from the As-S-Se-Te composition field. The glasses are in the process of being melted. Part II consists of developing new glass compositions having transmittance to beyond 16 microns. The best glasses from Part I are used as a basis with additions of other elements to obtain additional glasses with improved infrared transmission characteristics. A rapid method for preliminary evaluation of glass compositions was developed for evaluating a wide variety of composition changes in a short time. This method was utilized to examine numerous glasses comprised of As, Se, and Te with additions of Cu, Sb, Ag, and Bi. Results are given in terms of composition and extent of glass formation. A detailed description of the method is provided. (Author)

Descriptors :   *INFRARED OPTICAL MATERIALS, *OPTICAL GLASS, ABSORPTION, ARSENIC, COUNTERMEASURES, INFRARED OPTICAL SYSTEMS, INFRARED RADIATION, MEASUREMENT, OPTICAL COATINGS, PHYSICAL PROPERTIES, PURIFICATION, REFLECTION, REFRACTION, SELECTION, SELENIUM, SULFUR, TELLURIUM, WAVE PROPAGATION

Distribution Statement : APPROVED FOR PUBLIC RELEASE