Abstract

In this Letter we aim to bring an understanding to the apparition of multiple spots when using a Shack–Hartmann (SH) wavefront sensor behind diffractive lenses. In contrast to previous work, this phenomenon is described in terms of diffractive orders. It is illustrated with Zemax simulations, where three kinds of diffractive lenses (monofocal, bifocal, and trifocal) are set behind a microlens array. The presence of multiple spots is related to the phase jump of the diffractive profile and also to the number of steps seen through the microlens pupil. The possibility of assessing the optical quality of such lenses using SH measurements is discussed, in particular within the field of ophthalmology, where the need for precautions is underlined.

© 2011 Optical Society of America

Full Article  |  PDF Article

References

  • View by:
  • |
  • |
  • |

  1. J. Schwiegerling and E. DeHoog, Appl. Opt. 49, D62 (2010).
    [CrossRef] [PubMed]
  2. C. Campbell, J. Refract. Surg. 24, 308 (2008).
    [PubMed]
  3. W. Charman, R. Montés-Micó, and H. Radhadkrishnan, J. Refract. Surg. 24, 280 (2008).
    [PubMed]
  4. D. Gatinel, J. Cataract. Refract. Surg. 34, 1817 (2008).
    [CrossRef] [PubMed]
  5. D. Ortiz, J. Alio, G. Bernabeu, and V. Pongo, J. Cataract. Refract. Surg. 34, 755 (2008).
    [CrossRef] [PubMed]
  6. F. Castignoles, T. Lepine, P. Chavel, and G. Cohen, presented at 5th European Meeting on Visual and Physiological Optics (EMVPO) (Stockholm, Sweden August 22–24, 2010).
  7. F. Castignoles, M. Flury, and T. Lepine, Opt. Express 18, 5245 (2010).
    [CrossRef] [PubMed]

2010

2008

C. Campbell, J. Refract. Surg. 24, 308 (2008).
[PubMed]

W. Charman, R. Montés-Micó, and H. Radhadkrishnan, J. Refract. Surg. 24, 280 (2008).
[PubMed]

D. Gatinel, J. Cataract. Refract. Surg. 34, 1817 (2008).
[CrossRef] [PubMed]

D. Ortiz, J. Alio, G. Bernabeu, and V. Pongo, J. Cataract. Refract. Surg. 34, 755 (2008).
[CrossRef] [PubMed]

Alio, J.

D. Ortiz, J. Alio, G. Bernabeu, and V. Pongo, J. Cataract. Refract. Surg. 34, 755 (2008).
[CrossRef] [PubMed]

Bernabeu, G.

D. Ortiz, J. Alio, G. Bernabeu, and V. Pongo, J. Cataract. Refract. Surg. 34, 755 (2008).
[CrossRef] [PubMed]

Campbell, C.

C. Campbell, J. Refract. Surg. 24, 308 (2008).
[PubMed]

Castignoles, F.

F. Castignoles, M. Flury, and T. Lepine, Opt. Express 18, 5245 (2010).
[CrossRef] [PubMed]

F. Castignoles, T. Lepine, P. Chavel, and G. Cohen, presented at 5th European Meeting on Visual and Physiological Optics (EMVPO) (Stockholm, Sweden August 22–24, 2010).

Charman, W.

W. Charman, R. Montés-Micó, and H. Radhadkrishnan, J. Refract. Surg. 24, 280 (2008).
[PubMed]

Chavel, P.

F. Castignoles, T. Lepine, P. Chavel, and G. Cohen, presented at 5th European Meeting on Visual and Physiological Optics (EMVPO) (Stockholm, Sweden August 22–24, 2010).

Cohen, G.

F. Castignoles, T. Lepine, P. Chavel, and G. Cohen, presented at 5th European Meeting on Visual and Physiological Optics (EMVPO) (Stockholm, Sweden August 22–24, 2010).

DeHoog, E.

Flury, M.

Gatinel, D.

D. Gatinel, J. Cataract. Refract. Surg. 34, 1817 (2008).
[CrossRef] [PubMed]

Lepine, T.

F. Castignoles, M. Flury, and T. Lepine, Opt. Express 18, 5245 (2010).
[CrossRef] [PubMed]

F. Castignoles, T. Lepine, P. Chavel, and G. Cohen, presented at 5th European Meeting on Visual and Physiological Optics (EMVPO) (Stockholm, Sweden August 22–24, 2010).

Montés-Micó, R.

W. Charman, R. Montés-Micó, and H. Radhadkrishnan, J. Refract. Surg. 24, 280 (2008).
[PubMed]

Ortiz, D.

D. Ortiz, J. Alio, G. Bernabeu, and V. Pongo, J. Cataract. Refract. Surg. 34, 755 (2008).
[CrossRef] [PubMed]

Pongo, V.

D. Ortiz, J. Alio, G. Bernabeu, and V. Pongo, J. Cataract. Refract. Surg. 34, 755 (2008).
[CrossRef] [PubMed]

Radhadkrishnan, H.

W. Charman, R. Montés-Micó, and H. Radhadkrishnan, J. Refract. Surg. 24, 280 (2008).
[PubMed]

Schwiegerling, J.

Appl. Opt.

J. Cataract. Refract. Surg.

D. Gatinel, J. Cataract. Refract. Surg. 34, 1817 (2008).
[CrossRef] [PubMed]

D. Ortiz, J. Alio, G. Bernabeu, and V. Pongo, J. Cataract. Refract. Surg. 34, 755 (2008).
[CrossRef] [PubMed]

J. Refract. Surg.

C. Campbell, J. Refract. Surg. 24, 308 (2008).
[PubMed]

W. Charman, R. Montés-Micó, and H. Radhadkrishnan, J. Refract. Surg. 24, 280 (2008).
[PubMed]

Opt. Express

Other

F. Castignoles, T. Lepine, P. Chavel, and G. Cohen, presented at 5th European Meeting on Visual and Physiological Optics (EMVPO) (Stockholm, Sweden August 22–24, 2010).

Cited By

OSA participates in CrossRef's Cited-By Linking service. Citing articles from OSA journals and other participating publishers are listed here.

Alert me when this article is cited.


Figures (4)

Fig. 1
Fig. 1

Three diffractive lenses used for Zemax simulations: (a) monofocal lens ( P = + 23 D ), (b) bifocal lens ( P = + 20 D / + 23 D ), and (c) trifocal lens ( P = + 17 D / + 20 D / + 23 D ).

Fig. 2
Fig. 2

Model of the diffractive lens measured by an SH sensor.

Fig. 3
Fig. 3

Simulation of the spots with an SH sensor behind a (a) monofocal lens, (b) bifocal lens, and (c) trifocal lens.

Fig. 4
Fig. 4

Diffractive efficiency of a parabolic bifocal diffractive lens versus wavelength.

Metrics