Abstract

A device for making comparator settings by photoelectric scanning of spectrum line images is described. The fiducial position is determined by matching mirror image oscilloscope traces of the line contour. This method combines the advantages of increased speed, precision, objectivity of setting, and decreased eye and nervous strain on the operator. The device is readily adaptable to comparators of the fixed microscope-moving plate type, and conversion from photoelectric to visual setting can be accomplished in a few minutes.

© 1951 Optical Society of America

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References

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  1. T. B. Rymer and J. S. Halliday, J. Sci. Instr. 27, 50 (1950).
    [CrossRef]
  2. R. Fürth and W. D. Oliphant, J. Sci. Instr. 25, 289 (1948).
    [CrossRef]

1950 (1)

T. B. Rymer and J. S. Halliday, J. Sci. Instr. 27, 50 (1950).
[CrossRef]

1948 (1)

R. Fürth and W. D. Oliphant, J. Sci. Instr. 25, 289 (1948).
[CrossRef]

Fürth, R.

R. Fürth and W. D. Oliphant, J. Sci. Instr. 25, 289 (1948).
[CrossRef]

Halliday, J. S.

T. B. Rymer and J. S. Halliday, J. Sci. Instr. 27, 50 (1950).
[CrossRef]

Oliphant, W. D.

R. Fürth and W. D. Oliphant, J. Sci. Instr. 25, 289 (1948).
[CrossRef]

Rymer, T. B.

T. B. Rymer and J. S. Halliday, J. Sci. Instr. 27, 50 (1950).
[CrossRef]

J. Sci. Instr. (2)

T. B. Rymer and J. S. Halliday, J. Sci. Instr. 27, 50 (1950).
[CrossRef]

R. Fürth and W. D. Oliphant, J. Sci. Instr. 25, 289 (1948).
[CrossRef]

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Figures (3)

Fig. 1
Fig. 1

Optical system of comparator setting device.

Fig. 2
Fig. 2

View of comparator setter.

Fig. 3
Fig. 3

Oscilloscope patterns for various spectrum line shapes. A. Sharp line set 2 microns away from position of coincidence. B. Wide line set 2 microns away from position of coincidence. C. Asymmetrical line set to measure position of line center at approximately half-maximum intensity. D. Partially resolved hyperfine structure flag pattern.