Abstract

No wholly adequate standards have existed until now for checking the accuracy of the photometric scale of modern, high-precision, recording spectrophotometers. A sample of glass has been found which has the characteristics required of such a standard. A densitometer was developed for two commercial spectrophotometers to calibrate these standards. By using this densitometer the absorptivity of the standards was measured with a coefficient of variation approaching 0.1%.

© 1962 Optical Society of America

Some Observations Regarding Photometric Reproducibility between Ultraviolet Spectrophotometers

Lee Cahn
J. Opt. Soc. Am. 45(11) 953-957 (1955)

Investigation of Screens as Spectrophotometric Absorption Standards

J. M. Vandenbelt
J. Opt. Soc. Am. 52(3) 284-287 (1962)

A Grating Spectrophotometer for the Ultraviolet and Visible Regions

T. B. Thomas and E. E. Schneider
J. Opt. Soc. Am. 41(12) 1002-1005 (1951)

Residual Photometric Errors in the Commercial Recording Spectrophotometer*

Orrin W. Pineo
J. Opt. Soc. Am. 30(7) 276-289 (1940)

Problem of Realizing the Primary Standard of Light

C. L. Sanders and O. C. Jones
J. Opt. Soc. Am. 52(7) 731-746 (1962)