Abstract

A null test is described for a deeply aspheric lens. This test uses a spherical mirror that would be unable to produce enough distortion of the reflected wavefront to compensate for the asphericity of the lens if this were to be tested in air. Immersion of the lens (n=1.523) in a small water tank (n=1.333) reduces the wavefront distortion produced by the lens to about one-third of its value when in air, which is sufficient to allow compensation. The sensitivity of the test is also reduced by a factor of nearly 3, but this is of little importance in the application described below. It is thought that this use of a water tank may be original.

© 2011 Optical Society of America

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References

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  1. http://www.perkinelmer.com.
  2. http://www.excelitas.com.
  3. http://www.rs-components.com.
  4. http://www.comaroptics.com.
  5. A. Offner, “A null corrector for paraboloidal mirrors,” Appl. Opt. 2, 153–155 (1963).
    [CrossRef]
  6. R. V. Willstrop, “The flat-field Mersenne-Schmidt,” Mon. Not. R. Astron. Soc. 216, 411–427 (1985).
  7. R. V. Willstrop, “Atmospheric dispersion compensator for a wide-field three-mirror telescope,” Mon. Not. R. Astron. Soc. 225, 187–198 (1987).
  8. G. W. C. Kaye and T. H. Laby, “Radiation and optics,” in Tables of Physical and Chemical Constants, 14th ed., A.E.Bailey, ed. (Longman, 1973), p. 95.
  9. D. S. Brown, Grubb-Parsons, Walkergate, Newcastle-upon-Tyne, UK (personal communication, 1984).
  10. J. Vos, Comar Instruments, 70 Hartington Grove, Cambridge CB1 7UH, UK (personal communication, 14 March 2011).
  11. G. R. Harrison, “Simply constructed ultraviolet monochromators for large area illumination,” Rev. Sci. Instrum. 5, 149–152 (1934).
    [CrossRef]
  12. C. Christiansen, “Untersuchungen uber die optischen Eigenschaften von fein vertheilten Korpen. Erste theil,” Ann. Phys. u. Chem. 23, 298–306 (1884).
    [CrossRef]
  13. C. Christiansen, “Untersuchungen uber die optischen Eigenschaften von fein vertheilten Korpen. Zweiter theil,” Ann. Phys. u. Chem. 24, 439–446 (1885).
    [CrossRef]
  14. J. Strong, “Optics: light sources, filters and optical instruments,” in Procedures in Experimental Physics (Prentice-Hall, 1939).
  15. D. Malacara, “Appendix 2: Some useful null testing configurations,” in Optical Shop Testing, D.Malacara, ed. (Wiley, 1992).

1987 (1)

R. V. Willstrop, “Atmospheric dispersion compensator for a wide-field three-mirror telescope,” Mon. Not. R. Astron. Soc. 225, 187–198 (1987).

1985 (1)

R. V. Willstrop, “The flat-field Mersenne-Schmidt,” Mon. Not. R. Astron. Soc. 216, 411–427 (1985).

1963 (1)

1934 (1)

G. R. Harrison, “Simply constructed ultraviolet monochromators for large area illumination,” Rev. Sci. Instrum. 5, 149–152 (1934).
[CrossRef]

1885 (1)

C. Christiansen, “Untersuchungen uber die optischen Eigenschaften von fein vertheilten Korpen. Zweiter theil,” Ann. Phys. u. Chem. 24, 439–446 (1885).
[CrossRef]

1884 (1)

C. Christiansen, “Untersuchungen uber die optischen Eigenschaften von fein vertheilten Korpen. Erste theil,” Ann. Phys. u. Chem. 23, 298–306 (1884).
[CrossRef]

Brown, D. S.

D. S. Brown, Grubb-Parsons, Walkergate, Newcastle-upon-Tyne, UK (personal communication, 1984).

Christiansen, C.

C. Christiansen, “Untersuchungen uber die optischen Eigenschaften von fein vertheilten Korpen. Zweiter theil,” Ann. Phys. u. Chem. 24, 439–446 (1885).
[CrossRef]

C. Christiansen, “Untersuchungen uber die optischen Eigenschaften von fein vertheilten Korpen. Erste theil,” Ann. Phys. u. Chem. 23, 298–306 (1884).
[CrossRef]

Harrison, G. R.

G. R. Harrison, “Simply constructed ultraviolet monochromators for large area illumination,” Rev. Sci. Instrum. 5, 149–152 (1934).
[CrossRef]

Kaye, G. W. C.

G. W. C. Kaye and T. H. Laby, “Radiation and optics,” in Tables of Physical and Chemical Constants, 14th ed., A.E.Bailey, ed. (Longman, 1973), p. 95.

Laby, T. H.

G. W. C. Kaye and T. H. Laby, “Radiation and optics,” in Tables of Physical and Chemical Constants, 14th ed., A.E.Bailey, ed. (Longman, 1973), p. 95.

Malacara, D.

D. Malacara, “Appendix 2: Some useful null testing configurations,” in Optical Shop Testing, D.Malacara, ed. (Wiley, 1992).

Offner, A.

Strong, J.

J. Strong, “Optics: light sources, filters and optical instruments,” in Procedures in Experimental Physics (Prentice-Hall, 1939).

Vos, J.

J. Vos, Comar Instruments, 70 Hartington Grove, Cambridge CB1 7UH, UK (personal communication, 14 March 2011).

Willstrop, R. V.

R. V. Willstrop, “Atmospheric dispersion compensator for a wide-field three-mirror telescope,” Mon. Not. R. Astron. Soc. 225, 187–198 (1987).

R. V. Willstrop, “The flat-field Mersenne-Schmidt,” Mon. Not. R. Astron. Soc. 216, 411–427 (1985).

Ann. Phys. u. Chem. (2)

C. Christiansen, “Untersuchungen uber die optischen Eigenschaften von fein vertheilten Korpen. Erste theil,” Ann. Phys. u. Chem. 23, 298–306 (1884).
[CrossRef]

C. Christiansen, “Untersuchungen uber die optischen Eigenschaften von fein vertheilten Korpen. Zweiter theil,” Ann. Phys. u. Chem. 24, 439–446 (1885).
[CrossRef]

Appl. Opt. (1)

Mon. Not. R. Astron. Soc. (2)

R. V. Willstrop, “The flat-field Mersenne-Schmidt,” Mon. Not. R. Astron. Soc. 216, 411–427 (1985).

R. V. Willstrop, “Atmospheric dispersion compensator for a wide-field three-mirror telescope,” Mon. Not. R. Astron. Soc. 225, 187–198 (1987).

Rev. Sci. Instrum. (1)

G. R. Harrison, “Simply constructed ultraviolet monochromators for large area illumination,” Rev. Sci. Instrum. 5, 149–152 (1934).
[CrossRef]

Other (9)

G. W. C. Kaye and T. H. Laby, “Radiation and optics,” in Tables of Physical and Chemical Constants, 14th ed., A.E.Bailey, ed. (Longman, 1973), p. 95.

D. S. Brown, Grubb-Parsons, Walkergate, Newcastle-upon-Tyne, UK (personal communication, 1984).

J. Vos, Comar Instruments, 70 Hartington Grove, Cambridge CB1 7UH, UK (personal communication, 14 March 2011).

J. Strong, “Optics: light sources, filters and optical instruments,” in Procedures in Experimental Physics (Prentice-Hall, 1939).

D. Malacara, “Appendix 2: Some useful null testing configurations,” in Optical Shop Testing, D.Malacara, ed. (Wiley, 1992).

http://www.perkinelmer.com.

http://www.excelitas.com.

http://www.rs-components.com.

http://www.comaroptics.com.

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Figures (2)

Fig. 1
Fig. 1

Scale drawing of the null test. M, spherical mirror; S, light source; C, center of curvature of the spherical mirror; F, field lens; W, water tank containing the aspheric lens; I, final image. Only two rays are drawn: one at the margin of the mirror M, and the other near to the edge of the illuminated part of the field lens.

Fig. 2
Fig. 2

Cross section of the water tank and aspheric lens in the vertical plane. V, air vent, above; D, water inlet and drain, below. O rings are needed to make the tank watertight, and to prevent damage to the glass windows when the components of the tank are held together by screws (not shown). The dotted line at the upper left side of the lens shows a sphere that departs from the lens surface by a maximum of 0.29 mm .

Tables (5)

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Table 1 Relay Lens Design a

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Table 2 Convergence of Null Test Arrangement a

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Table 3 Optical Arrangement of the Null Test for an Aspheric Lens a

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Table 4 Optical Arrangement of the Null Test for the Aspheric Lens Using a Water Trough a

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Table 5 Optical Arrangement of the Null Test for the Aspheric Lens in Air, Using the Spherical Mirror in Double Pass a

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