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

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References

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    [CrossRef]
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    [CrossRef]
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    [CrossRef]
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    [CrossRef]
  5. “Report on Absorption Spectroscopy,” ASTM Preprint65, (1958).
  6. J. M. Vandenbelt, J. Opt. Soc. Am. 52, 284 (1962).
    [CrossRef]
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    [CrossRef]
  8. K. S. Gibson and M. M. Balcom, J. Opt. Soc. Am. 37, 593 (1947).
    [CrossRef] [PubMed]
  9. J. E. Stewart, Appl. Opt. 1, 75 (1962).
    [CrossRef]
  10. N. T. Gridgeman, Anal. Chem. 24, 445 (1952).
    [CrossRef]
  11. W. R. Blevin, Optica Acta 6, 99 (1959).
    [CrossRef]
  12. Perforated Products, Inc., Brookline, Massachusetts.

1962 (2)

1959 (1)

W. R. Blevin, Optica Acta 6, 99 (1959).
[CrossRef]

1954 (1)

1953 (3)

1952 (1)

N. T. Gridgeman, Anal. Chem. 24, 445 (1952).
[CrossRef]

1947 (1)

1934 (1)

K. S. Gibson, G. K. Walker, and M. E. Brown, J. Opt. Soc. Am. 24, 58 (1934).
[CrossRef]

Balcom, M. M.

Beckman, A. O.

L. S. Goldring, R. C. Hawes, G. H. Hare, A. O. Beckman, and M. E. Stickney, Anal. Chem. 25, 869 (1953).
[CrossRef]

Blevin, W. R.

W. R. Blevin, Optica Acta 6, 99 (1959).
[CrossRef]

Bosley, D. E.

Brode, W. R.

Brown, M. E.

K. S. Gibson, G. K. Walker, and M. E. Brown, J. Opt. Soc. Am. 24, 58 (1934).
[CrossRef]

Gibson, K. S.

K. S. Gibson and M. M. Balcom, J. Opt. Soc. Am. 37, 593 (1947).
[CrossRef] [PubMed]

K. S. Gibson, G. K. Walker, and M. E. Brown, J. Opt. Soc. Am. 24, 58 (1934).
[CrossRef]

Goldring, L. S.

L. S. Goldring, R. C. Hawes, G. H. Hare, A. O. Beckman, and M. E. Stickney, Anal. Chem. 25, 869 (1953).
[CrossRef]

Gould, J. H.

Gridgeman, N. T.

N. T. Gridgeman, Anal. Chem. 24, 445 (1952).
[CrossRef]

Hare, G. H.

L. S. Goldring, R. C. Hawes, G. H. Hare, A. O. Beckman, and M. E. Stickney, Anal. Chem. 25, 869 (1953).
[CrossRef]

Hawes, R. C.

L. S. Goldring, R. C. Hawes, G. H. Hare, A. O. Beckman, and M. E. Stickney, Anal. Chem. 25, 869 (1953).
[CrossRef]

Heidt, L. J.

Stewart, J. E.

Stickney, M. E.

L. S. Goldring, R. C. Hawes, G. H. Hare, A. O. Beckman, and M. E. Stickney, Anal. Chem. 25, 869 (1953).
[CrossRef]

Vandenbelt, J. M.

Walker, G. K.

K. S. Gibson, G. K. Walker, and M. E. Brown, J. Opt. Soc. Am. 24, 58 (1934).
[CrossRef]

Whitney, J. E.

Wyman, G. M.

Anal. Chem. (2)

L. S. Goldring, R. C. Hawes, G. H. Hare, A. O. Beckman, and M. E. Stickney, Anal. Chem. 25, 869 (1953).
[CrossRef]

N. T. Gridgeman, Anal. Chem. 24, 445 (1952).
[CrossRef]

Appl. Opt. (1)

J. Opt. Soc. Am. (6)

Optica Acta (1)

W. R. Blevin, Optica Acta 6, 99 (1959).
[CrossRef]

Other (2)

Perforated Products, Inc., Brookline, Massachusetts.

“Report on Absorption Spectroscopy,” ASTM Preprint65, (1958).

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Figures (1)

Fig. 1
Fig. 1

Typical test run of three calibrated photometric filter glasses on the model 350 spectrophotometer. The test points are indicated.

Tables (2)

Tables Icon

Table I Sample measurements at 640 mμ.

Tables Icon

Table II Filter calibration data and accuracy.

Equations (1)

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log 10 [ ( 1 - R ) / T ] = t ,