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Comparison measurements on regular spectral transmittance

✍ Scribed by Farshid Manoochehri; Erkki Ikonen; Leif Liedquist

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
528 KB
Volume
21
Category
Article
ISSN
0361-2317

No coin nor oath required. For personal study only.

✦ Synopsis

Comparison Measurements on Regular Spectral Transmittance

A comparison ojthe scales of regular spectral transmittance of the Helsinki University of Technology (HUT) and the Swedish National Testing and Research Institute (SP) was made using a set of 3 absorption neutral-density glassjlters and a flat piece of UV grade synthetic silica. The nominal transmittances of the samples were 0.01, 0. I, 0.5, and 0.93. The spatial transmittance profrle and the temperature coefJicient of spectral transmittance of the filters were measured. A good agreement wus found between the results oj-SP and HUT, since mosl of the dijiwnces in transmittance values arc within the relative standard uncertainty of the comparison ranging from 0.2-2% (level of confidence 68%).0 1996 John Wiky & Sori.s. Inc.

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