Abstract

A range measurement technique is presented which allows real-time range data acquisition for all points in an image. The technique relies upon the systematic variation in the Fresnel diffraction pattern of a grating as a function of propagation distance. The technique uses a single view of the volume in question so there are no hidden points. Furthermore, there is no need for beam scanning or is any off-line processing required. An extensive theory of operation is presented along with grating and illumination design methods which allow one to tailor the technique to specific measurement requirements. Qualitative experimental results are given along with quantitative results.

© 1984 Optical Society of America

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  1. P. Chavel, T. C. Strand, “Pseudocolor Encoding of Depth Information Using Talbot Effect,” in Optics in Four Dimensions—1980, M. A. Machado, L. M. Narducci, Eds. (American Institute of Physics, New York, 1981).
  2. A. Jain, U.S. Patent4,210,399 (1July1980).
  3. F. A. Talbot, Philos. Mag. 9, 401 (1836).
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  5. E. A. Heideman, M. A. Breazeale, J. Opt. Soc. Am. 49, 372 (1959).
  6. G. L. Rogers, Proc. R. Soc. London Ser. B 157, 83 (1962).
  7. J. T. Winthrop, C. R. Worthington, J. Opt. Soc. Am. 55, 373 (1965).
  8. W. D. Montgomery, J. Opt. Soc. Am. 57, 772 (1967).

1967

1965

1962

G. L. Rogers, Proc. R. Soc. London Ser. B 157, 83 (1962).

1959

1957

J. M. Cowley, A. F. Moodie, Proc. R. Soc. London Ser. B 70, 497 (1957).

1836

F. A. Talbot, Philos. Mag. 9, 401 (1836).

Breazeale, M. A.

Chavel, P.

P. Chavel, T. C. Strand, “Pseudocolor Encoding of Depth Information Using Talbot Effect,” in Optics in Four Dimensions—1980, M. A. Machado, L. M. Narducci, Eds. (American Institute of Physics, New York, 1981).

Cowley, J. M.

J. M. Cowley, A. F. Moodie, Proc. R. Soc. London Ser. B 70, 497 (1957).

Heideman, E. A.

Jain, A.

A. Jain, U.S. Patent4,210,399 (1July1980).

Montgomery, W. D.

Moodie, A. F.

J. M. Cowley, A. F. Moodie, Proc. R. Soc. London Ser. B 70, 497 (1957).

Rogers, G. L.

G. L. Rogers, Proc. R. Soc. London Ser. B 157, 83 (1962).

Strand, T. C.

P. Chavel, T. C. Strand, “Pseudocolor Encoding of Depth Information Using Talbot Effect,” in Optics in Four Dimensions—1980, M. A. Machado, L. M. Narducci, Eds. (American Institute of Physics, New York, 1981).

Talbot, F. A.

F. A. Talbot, Philos. Mag. 9, 401 (1836).

Winthrop, J. T.

Worthington, C. R.

J. Opt. Soc. Am.

Philos. Mag.

F. A. Talbot, Philos. Mag. 9, 401 (1836).

Proc. R. Soc. London Ser. B

J. M. Cowley, A. F. Moodie, Proc. R. Soc. London Ser. B 70, 497 (1957).

G. L. Rogers, Proc. R. Soc. London Ser. B 157, 83 (1962).

Other

P. Chavel, T. C. Strand, “Pseudocolor Encoding of Depth Information Using Talbot Effect,” in Optics in Four Dimensions—1980, M. A. Machado, L. M. Narducci, Eds. (American Institute of Physics, New York, 1981).

A. Jain, U.S. Patent4,210,399 (1July1980).

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