Abstract

The effect of diffraction by the negative grid, the problem of the formation of a shadow of the negative grid on the viewing screen, and the manufacture of grids are treated briefly. A brief note on mechanical design is included. Five references are cited.

© 1951 Optical Society of America

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References

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  1. R. A. Burton, J. Opt. Soc. Am. 39, 907–908 (1949).
    [Crossref]
  2. J. Hartmann, Fysysk Tidss. 3–4 (1940).
  3. Hubert Schardin, Ergeb. exakten Naturw. 20, 310–314 (1942). Invention credited to H. Maeker.
  4. T. E. Mortensen, Rev. Sci. Instr. 21, 3–6 (1950).
    [Crossref]
  5. A. Kantrowitz and R. L. Trimpi, J. Aeronaut. Sci. 17, No. 5 (1950).
  6. Zip-a-Tone screens can be obtained from the Para-Tone Company, 343 S. Dearborn Street, Chicago, Illinois.

1950 (2)

T. E. Mortensen, Rev. Sci. Instr. 21, 3–6 (1950).
[Crossref]

A. Kantrowitz and R. L. Trimpi, J. Aeronaut. Sci. 17, No. 5 (1950).

1949 (1)

1942 (1)

Hubert Schardin, Ergeb. exakten Naturw. 20, 310–314 (1942). Invention credited to H. Maeker.

1940 (1)

J. Hartmann, Fysysk Tidss. 3–4 (1940).

Burton, R. A.

Hartmann, J.

J. Hartmann, Fysysk Tidss. 3–4 (1940).

Kantrowitz, A.

A. Kantrowitz and R. L. Trimpi, J. Aeronaut. Sci. 17, No. 5 (1950).

Mortensen, T. E.

T. E. Mortensen, Rev. Sci. Instr. 21, 3–6 (1950).
[Crossref]

Schardin, Hubert

Hubert Schardin, Ergeb. exakten Naturw. 20, 310–314 (1942). Invention credited to H. Maeker.

Trimpi, R. L.

A. Kantrowitz and R. L. Trimpi, J. Aeronaut. Sci. 17, No. 5 (1950).

Ergeb. exakten Naturw. (1)

Hubert Schardin, Ergeb. exakten Naturw. 20, 310–314 (1942). Invention credited to H. Maeker.

Fysysk Tidss. (1)

J. Hartmann, Fysysk Tidss. 3–4 (1940).

J. Aeronaut. Sci. (1)

A. Kantrowitz and R. L. Trimpi, J. Aeronaut. Sci. 17, No. 5 (1950).

J. Opt. Soc. Am. (1)

Rev. Sci. Instr. (1)

T. E. Mortensen, Rev. Sci. Instr. 21, 3–6 (1950).
[Crossref]

Other (1)

Zip-a-Tone screens can be obtained from the Para-Tone Company, 343 S. Dearborn Street, Chicago, Illinois.

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Figures (2)

Fig. 1
Fig. 1

Diagram illustrating the screening of light from a point on the viewing screen by the negative grid.

Fig. 2
Fig. 2

Camera, showing alignment system. The motions available are: rotation of negative grid about the optical axis, translation of the lens-grid unit along the optical axis, and movement of the flat to register the source-grid image on the negative grid.

Equations (2)

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m / d 2 8000 ,
m 400 f d .