Accession Number : AD0635670

Title :   INFRARED COATING STUDIES.

Descriptive Note : Quarterly rept. no. 11, 15 Dec 65-14 Mar 66.

Corporate Author : BAUSCH AND LOMB INC ROCHESTER N Y RESEARCH AND DEVELOPMENT DIV

Personal Author(s) : Sulzbach, F. ; Turner,A. F.

Report Date : 14 MAR 1966

Pagination or Media Count : 33

Abstract : An experimental study was made of the reflectance of thick evaporated films in their reststrahlen regions of the infrared spectrum. Although only a few of the materials studied gave films having an efficient rst reflectance, many of them appeared optically acceptable for use as interference films. These may be as being clear without color and free of turbidity, i.e. designated therein as clear or only slightly scattering (sl. scatter.) They include films showing no cracks in optical thickness up to six microns or more, depending on substrate temperature, of Al2O3, Nd2O3, CaF2, siO2, Ti2O3, MgO, MgF2, LiF, HfO2 and ZrO2. For rst reflectance purposes, e.g. reflection filtering, films of MgO were best, there being no difficulty in obtaining the full reflectance of the parent crystal.

Descriptors :   (*OPTICAL COATINGS, *INFRARED OPTICAL MATERIALS), (*INFRARED FILTERS, FILMS), REFLECTION, ALUMINUM COMPOUNDS, OXIDES, NEODYMIUM COMPOUNDS, CALCIUM COMPOUNDS, FLUORIDES, SILICON COMPOUNDS, TITANIUM COMPOUNDS, MAGNESIUM COMPOUNDS, LITHIUM COMPOUNDS, HAFNIUM COMPOUNDS, ZIRCONIUM COMPOUNDS, VAPOR PLATING, INFRARED RADIATION, INFRARED SPECTRA

Subject Categories : Coatings, Colorants and Finishes
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE