Conclusions
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1.
A criterion for the sensitivity of the raster method of superposing lines has been determined by diffraction theory.
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2.
In order to increase the angular sensitivity of the method in the case of photoelectric recording, it is essential to increase the diameter of the objective, and to create an initial displacement of the rasters equal to half the width of the lines.
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3.
Autocollimators with markings in the form of rasters may be used to measure small changes in physical quantities capable of producing a change in the direction of the light beams, for example, a change in the refractive index or linear expansion [2].
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Literature cited
R. V. Jones, Sci. Inst.,36, No. 2 (1959).
R. V. Jones, Sci. Inst.,38, No. 2 (1961).
R. Ditchburn, Physical Optics [Russian translation], Mir, Moscow (1965).
A. Mareschal and M. Françon, Structure of an Optical Image [Russian translation], Mir, Moscow (1964).
Additional information
Translated from Izmeritel'naya Tekhnika, No. 12, pp. 34–35, December, 1971.
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Sokol'skii, M.N., Lapo, L.M. Sensitivity of a raster autocollimator for measuring small angular quantities. Meas Tech 14, 1834–1836 (1971). https://doi.org/10.1007/BF00994943
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DOI: https://doi.org/10.1007/BF00994943