Abstract

Based on the optical principle of a slide projector, a visual tristimulus projection colorimeter has been developed. The calorimeter operates with easily interchangeable sets of primary color filters placed in a frame at the objective. The apparatus has proved to be fairly accurate. The reproduction of the color matches as measured by the standard deviation is equal to the visual sensitivity to color differences for each observer. Examples of deviations in the matches among individuals as well as deviations compared with the CIE 1931 Standard Observer are given. These deviations are demonstrated to be solely due to individual differences in the perception of metameric colors. Thus, taking advantage of an objective observation (allowing all adjustments to be judged by a group of impartial observers), the colorimeter provides an excellent aid in the study of discrimination, metamerism, and related effects which are of considerable interest in current research in colorimetry and in the study of color vision tests.

© 1971 Optical Society of America

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References

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  1. S. Rösch, Math. Naturwiss. Unterricht IV, 156 (1951).
  2. L. Bergmann, Der Kleinbildprojektor im naturwissenschaftlichen Unterricht (Fa. Leitz, Wetzlar, 1959).
  3. K. Miescher, Color 5, 46 (1968).
  4. K. Miescher, lecture held at the 1st International AIC Congress, Stockholm, 1969 (to be published in AIC Proceedings, Musterschmidt, 1970).
  5. A. Valberg, Color 5, 46 (1968). The author has also used the modified projectors with success in a guest lecture on colors given at the Norwegian School of Art and Fine Works, Oslo, 1969.
  6. A. Valberg, thesis presented to Mat. Nat. vit. Fakultet, U. of Oslo (Sept.1967).
  7. A. Valberg, lecture held at the 1st International AIC Congress, Stockholm, 1969 (to be published in AIC Proceedings, Musterschmidt, 1970).
  8. A. Valberg, Vision Res. to be published.
  9. W. D. Wright, The Measurement of Colour (Hilger & Watts Ltd., London, 1964).
  10. D. L. MacAdam, J. Opt. Soc. Amer. 32, 247 (1942).
    [CrossRef]
  11. W. S. Stiles, G. Wyszecki, J. Opt. Soc. Amer. 52, 58 (1962).
    [CrossRef]

1968

K. Miescher, Color 5, 46 (1968).

A. Valberg, Color 5, 46 (1968). The author has also used the modified projectors with success in a guest lecture on colors given at the Norwegian School of Art and Fine Works, Oslo, 1969.

1962

W. S. Stiles, G. Wyszecki, J. Opt. Soc. Amer. 52, 58 (1962).
[CrossRef]

1951

S. Rösch, Math. Naturwiss. Unterricht IV, 156 (1951).

1942

D. L. MacAdam, J. Opt. Soc. Amer. 32, 247 (1942).
[CrossRef]

Bergmann, L.

L. Bergmann, Der Kleinbildprojektor im naturwissenschaftlichen Unterricht (Fa. Leitz, Wetzlar, 1959).

MacAdam, D. L.

D. L. MacAdam, J. Opt. Soc. Amer. 32, 247 (1942).
[CrossRef]

Miescher, K.

K. Miescher, Color 5, 46 (1968).

K. Miescher, lecture held at the 1st International AIC Congress, Stockholm, 1969 (to be published in AIC Proceedings, Musterschmidt, 1970).

Rösch, S.

S. Rösch, Math. Naturwiss. Unterricht IV, 156 (1951).

Stiles, W. S.

W. S. Stiles, G. Wyszecki, J. Opt. Soc. Amer. 52, 58 (1962).
[CrossRef]

Valberg, A.

A. Valberg, Color 5, 46 (1968). The author has also used the modified projectors with success in a guest lecture on colors given at the Norwegian School of Art and Fine Works, Oslo, 1969.

A. Valberg, thesis presented to Mat. Nat. vit. Fakultet, U. of Oslo (Sept.1967).

A. Valberg, Vision Res. to be published.

A. Valberg, lecture held at the 1st International AIC Congress, Stockholm, 1969 (to be published in AIC Proceedings, Musterschmidt, 1970).

Wright, W. D.

W. D. Wright, The Measurement of Colour (Hilger & Watts Ltd., London, 1964).

Wyszecki, G.

W. S. Stiles, G. Wyszecki, J. Opt. Soc. Amer. 52, 58 (1962).
[CrossRef]

Color

K. Miescher, Color 5, 46 (1968).

A. Valberg, Color 5, 46 (1968). The author has also used the modified projectors with success in a guest lecture on colors given at the Norwegian School of Art and Fine Works, Oslo, 1969.

J. Opt. Soc. Amer.

D. L. MacAdam, J. Opt. Soc. Amer. 32, 247 (1942).
[CrossRef]

W. S. Stiles, G. Wyszecki, J. Opt. Soc. Amer. 52, 58 (1962).
[CrossRef]

Math. Naturwiss. Unterricht

S. Rösch, Math. Naturwiss. Unterricht IV, 156 (1951).

Other

L. Bergmann, Der Kleinbildprojektor im naturwissenschaftlichen Unterricht (Fa. Leitz, Wetzlar, 1959).

K. Miescher, lecture held at the 1st International AIC Congress, Stockholm, 1969 (to be published in AIC Proceedings, Musterschmidt, 1970).

A. Valberg, thesis presented to Mat. Nat. vit. Fakultet, U. of Oslo (Sept.1967).

A. Valberg, lecture held at the 1st International AIC Congress, Stockholm, 1969 (to be published in AIC Proceedings, Musterschmidt, 1970).

A. Valberg, Vision Res. to be published.

W. D. Wright, The Measurement of Colour (Hilger & Watts Ltd., London, 1964).

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