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Applied Optics

Applied Optics


  • Vol. 7, Iss. 2 — Feb. 1, 1968
  • pp: 341–342

Automatic Interferometer with Digital Readout for Refractometric Analysis

W. Kinder, J. Neumann, H. Plesse, and R. Torge  »View Author Affiliations

Applied Optics, Vol. 7, Issue 2, pp. 341-342 (1968)

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The paper describes an interference refractometer for liquids and gases which operates automatically and reads out in digital or analog form. A compensating technique using white light is used for measurement. Zero adjustment is achieved by rotating the compensator and capturing the zero-order white light fringe by photoelectric means. Measurement of the path difference compensated by the compensator is based on electronic interpolation and counting of interference fringes by optointerferometric means, a time division multiplex technique with pulse amplitude modulation being used to obtain the electrical fringe signals.

© 1968 Optical Society of America

Original Manuscript: July 11, 1967
Published: February 1, 1968

W. Kinder, J. Neumann, H. Plesse, and R. Torge, "Automatic Interferometer with Digital Readout for Refractometric Analysis," Appl. Opt. 7, 341-342 (1968)

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  1. W. Kinder, Deutsches Bundes Patent1,100, 325 (1958).
  2. S. Namba, Rev. Sci. Instr. 30, 642 (1959). [CrossRef]
  3. E. R. Peck, B. N. Khanna, J. Opt. Soc. Am. 56, 1059 (1966). [CrossRef]
  4. W. Kinder, Optik 24, 323 (1966/67).
  5. G. Hansen, Deutsches Bundes Patent1,075, 861 (1956).
  6. T. S. Kolomiitsova, I. V. Novikova, Opt. Spectry. 8, 189 (1960).
  7. R. Torge, Z. Instrumentenk. 75, 155 (1967).

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