Abstract

Assuming the Ronchi and the Hartmann tests to be null tests, we were able to design special screens for each test that produce aligned straight fringes and a square array for the observed patterns. It also became clear that the screen filter and observing planes for both tests can be interchanged.

© 1990 Optical Society of America

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References

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  1. D. Malacara, A. Cornejo, M. V. R. K. Murty, “Bibliography of Various Optical Testing Methods,” Appl. Opt. 14, 1065–1080 (1975).
    [CrossRef] [PubMed]
  2. A. Cornejo-Rodriguez, H. J. Caulfield, W. Friday, “Testing of Optical Surfaces: A bibliography,” Appl. Opt. 20, 4148–4148 (1981).
    [CrossRef] [PubMed]
  3. A. Cornejo-Rodriguez, “Ronchi Test,” Optical Shop Testing, D. Malacara, Ed. (Wiley, New York, 1978), Chap. 9.
  4. I. Ghozeil, “Hartmann and Other Screen Tests,” Optical Shop Testing, D. Malacara, Ed. (Wiley, New York, 1978), Chap. 10.
  5. A. A. Sherwood, “Ronchi Test Charts for Parabolic Mirrors,” J. Proc. R. Soc. New South Wales 43, 19 (1960).
  6. D. Malacara, “Geometrical Ronchi Test of Aspherical Mirrors,” Appl. Opt. 4, 1371–1373 (1965).
    [CrossRef]

1981 (1)

1975 (1)

1965 (1)

1960 (1)

A. A. Sherwood, “Ronchi Test Charts for Parabolic Mirrors,” J. Proc. R. Soc. New South Wales 43, 19 (1960).

Caulfield, H. J.

Cornejo, A.

Cornejo-Rodriguez, A.

A. Cornejo-Rodriguez, H. J. Caulfield, W. Friday, “Testing of Optical Surfaces: A bibliography,” Appl. Opt. 20, 4148–4148 (1981).
[CrossRef] [PubMed]

A. Cornejo-Rodriguez, “Ronchi Test,” Optical Shop Testing, D. Malacara, Ed. (Wiley, New York, 1978), Chap. 9.

Friday, W.

Ghozeil, I.

I. Ghozeil, “Hartmann and Other Screen Tests,” Optical Shop Testing, D. Malacara, Ed. (Wiley, New York, 1978), Chap. 10.

Malacara, D.

Murty, M. V. R. K.

Sherwood, A. A.

A. A. Sherwood, “Ronchi Test Charts for Parabolic Mirrors,” J. Proc. R. Soc. New South Wales 43, 19 (1960).

Appl. Opt. (3)

J. Proc. R. Soc. New South Wales (1)

A. A. Sherwood, “Ronchi Test Charts for Parabolic Mirrors,” J. Proc. R. Soc. New South Wales 43, 19 (1960).

Other (2)

A. Cornejo-Rodriguez, “Ronchi Test,” Optical Shop Testing, D. Malacara, Ed. (Wiley, New York, 1978), Chap. 9.

I. Ghozeil, “Hartmann and Other Screen Tests,” Optical Shop Testing, D. Malacara, Ed. (Wiley, New York, 1978), Chap. 10.

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Figures (4)

Fig. 1
Fig. 1

Parameters used for the simulation of Ronchigrams.

Fig. 2
Fig. 2

(a) Simulated Ronchigram for aparabolic mirror. (b) Observed null Ronchigram for the Ronchi-Hartmann screen designed using the Ronchigram of (a). (c) Observed null Ronchigram for unfinished parabolic mirror.

Fig. 3
Fig. 3

Parameters used for the expected squared dots pattern in the null Hartmann test.

Fig. 4
Fig. 4

(a) Designed Hartmann screen for testing a parabolic mirror in the null method. (b) Observed Hartmanngram in the null Hartmann test, showing the squared array of image dots points for the screen of Fig. 4(a).

Equations (9)

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T A ( S ) = ( l + L - 2 Z ) [ 1 - ( d Z d S ) 2 ] + 2 d Z d S [ S - ( l - z ) ( L - Z ) S ] ( l - Z S ) [ 1 - ( d Z d S ) 2 ] + 2 d Z d S ,
T A = m d Sin Θ .
S P = S { 1 - [ Z ( S max ) - Z ( S ) L - Z ( S ) ] [ 1 - T A S ] } .
x = m d ,
y = n d ,
T = m 2 + n 2 d ,
x P = S P ( m / m 2 + n 2 ) ,
y P = S P ( n / m 2 + n 2 ) .
T ( S o ) + d T d S Δ S = m 2 + n 2 d ,

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