Optical Constants and Bulk Optical Properties of Soda Lime Silica Glasses for Windows

Publication Type

Journal Article

LBNL Report Number

LBL-13572

Abstract

A comprehensive set of optical constants and a partial set of bulk optical properties are listed for clear, absorbing, and low-iron glasses used for windows. The measurements extend from the near ultraviolet to the far infrared, covering the range of interest for calculating solar and thermal radiative transfer through windows. This information is also needed to calculate the properties of thin-film coatings on glass substrates. Large variations in solar absorption are observed among these glasses, whereas the far-infrared properties are almost constant for all glass types. An important quantity, the hemispherical total emissivity, is 0.837 at 20 degrees C, as determined from reflectance data measured with an IBM Fourier-transform spectrometer. Solar properties are determined from conventional transmission and reflection measurements.

Journal

Solar Energy Materials

Volume

12

Year of Publication

1985

Pagination

275-288

Call Number

LBL-13572