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Committee on Glass Forms Subcommittee on Optical Properties

ASTM International Committee C14 on Glass and Glass Products has formed a new subcommittee, C14.11 on the Optical Properties of Glass. The scope of C14.11 is to develop standards relevant to optical property testing, including transmittance, the index of refraction, dispersion, reflectivity, absorption, flatness, optical distortion and haze. The new subcommittee will meet for the first time during the C14 meeting Oct. 19 in Corning, N.Y.

According to C14.11 chair Alex Redner, Strainoptic Technologies, transmittance is an important characteristic of glass that will be the focus of the new task group. “Glass is essentially used because it is transparent,” says Redner. “This is one of its essential characteristics that is reported by primary glass producers, and specified by most users. But, as of this date, there is no C14 test method for measuring transmittance.”

Redner says that proposed activities for C14.11 include developing a variety of test methods, practices and specifications concerned with the optical properties of glass, as well as conducting seminars and symposia on the subject.

For further technical information, contact Alex Redner, Strainoptic Technologies Inc., North Wales, Pa. (phone: 215/661-0100). Committee C14 meets Oct. 19 in Corning, N.Y. For membership or meeting details, contact Tom O’Toole, ASTM International (phone: 610/832-9739). //

Copyright 2004, ASTM International