Transmittance of Near‐inrared Energy by Binary Glasses*

Abstract

All curves demonstrate the reproducibility which can be attained with the apparatus.A study has been made of the transmittance of near-infrared energy by a number of binary glasses. Of the systems studied, the lithid-ailica and lead oxide-silica glasses were found to have the highest transmittance of energy in the range of wave lengths from 3.0 to 5.0 microns. The transmittance of lithid-silica glass is compared with that of the other alkali-silica glasses. Values cf transmittance are given for lead silicate glasses of higher lead content than previously reported in the literature.

Electrode function (pH response), hygroscopicity, and chemical durability of soda-lead oxide-silica glasses

“…The glasse investigatcd were from a series furnish ed by F. W. Glaze and J. M. Florence as a part of th eir gen eral study of infrared transmittance of glasses [25,26]. The compositions of these glasses w er e computed from the ba tch and arc identified throughout the text of this paper as weight p ercent in th e ratio of Na20:PbO: Si02.…”

Colorimetry and spectrophotometry :

“…Glass (see also Lovibond, Signal colors and glasses) binary, infrared transmit tance 412 German, spectral transmittance 416 infrared, transmittance 153, 403, 412 luminous transmittance 22,87,216,217,219 optical, spectral transmittance 454 spectral transmittance 21, 34, 37, 47, 87, 153, 216, 217, 416, 504 ultraviolet transmittance 47, 153 Glass wedge colorimeter 148 Glasses, eye-protective spectral transmittance 39, 153, 298a, 410a infrared transmittance 153, 298a, 410a ultraviolet transmittance 39, 153, 298a, 410a Gloss, geometry 467,470,471,506,579 measurement 136, 154, 161, 235, 254, 259, 263, 273, 275, 280, 289, 309, 341, 344, 363, 368, 384, 398, 427, 440, 449, 455, 467, 470, 471, 483a, 506 259,273,275,279,341,348,363,384,398,427,435,440,467,470,471,506 Glossmeters 419,435 Hering,theory 349,411,419,435,528 Hess-Ives tint photometer 171 Heterochromatic photometry, see Photometry, heterochromatic Hiding power, measurement 104, 455, 483a Highway marking yellow 434, 488a Highway signs 578 Hilger sector photometer 25, 93,…”

Infrared transmittance of some calcium aluminate and germanate glasses

“…The proced ure for t.he preparation of the glasses and for t he transmittance measurements has b een given in previous publications [1,2]. During Lhe finin g of several of the glasses, dry air was introduced into th e bottom of the m el t by m eans of a platinum Lube for 2 hI'.…”

“…The st udy of lhe transm ittance of infrared energy b.\-glass [1,2,3] '~ at the National Bureau of tandarcls has resulted in t he p reparation of glasses departing from t he ol'clinar)' glass compositions. The common glass-forming oxides ar e B20 3, P 20 5, and S IO~.…”

“…Bussem and Eitel [6] found that t he composition 52 .2 percen t Al20 3 and 47.S p ercent ~ICaO could b e quenched to glass. 1 Presented at tbe Fifty,Seventb Annual M eelin of the American Ceramic Society, C in cinnati , Ohio, April 27, 1955.…”