Abstract

The field-of-view (FOV) of a simple imaging system can be dramatically improved using a liquid crystal spatial light modulator (SLM). A SLM can be used to correct the off-axis aberrations that often limit the useful FOV of an imaging system giving near diffraction-limited performance at much larger field angles than would otherwise be possible. Foveated imaging refers to the variation in spatial resolution across the image caused by using the SLM in this application, and it is useful in reducing bandwidth requirements for data transmission.

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References

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  1. See for example, R. R. Shannon, The art and science of optical design (Cambridge University Press, New York, 1997), Ch. 7.
    [CrossRef]
  2. G. K. Wallace, "The JPEG still picture compression standard," Communications of the ACM 34, 30-44 (1991).
    [CrossRef]
  3. N. Tsumura, C. Endo, H. Haneishi, and Y. Miyake, "Image compression and decompression based on gazing area," Proc. SPIE 2657, 361-367 (1996).
    [CrossRef]
  4. W. S. Geisler and J. S. Perry, "A real-time foveated multi-resolution system for low-bandwidth video communication," Proc. SPIE 3299, 294-305 (1998).
    [CrossRef]
  5. E. Chang, S. Mallat, and C. K. Yap, "Wavelet foveation," Applied and Computational Harmonic Analysis 9, 312-35 (2000).
    [CrossRef]
  6. S.R. Restaino, J. T. Baker, D. C. Dayton, D. Werling, and S. L. Browne, "State of the art in liquid crystal technologies for wavefront compensation: an AFRL perspective," Proc. SPIE 4167, 157-161 (2000).
  7. P. F. McManamon, T. A. Dorschner, D. L. Corkum, L. J. Friedman, D. S. Hobbs, M. Holtz, S. Liberman, H. Q. Nguyen, D. P. Resler, R. C. Sharp, and E. A. Watson, "Optical phased array technology," Proc. IEEE 84, 268-298 (1996).
    [CrossRef]
  8. G. D. Love, "Wave-front correction and production of Zernike modes with a liquid-crystal spatial light modulator," Appl. Opt. 36, 1517-1524 (1997).
    [CrossRef] [PubMed]
  9. D. S. Acton, "Correction of static optical errors in a segmented adaptive optical system," Appl. Opt. 34, 7965-7968 (1995).
    [CrossRef] [PubMed]

Other (9)

See for example, R. R. Shannon, The art and science of optical design (Cambridge University Press, New York, 1997), Ch. 7.
[CrossRef]

G. K. Wallace, "The JPEG still picture compression standard," Communications of the ACM 34, 30-44 (1991).
[CrossRef]

N. Tsumura, C. Endo, H. Haneishi, and Y. Miyake, "Image compression and decompression based on gazing area," Proc. SPIE 2657, 361-367 (1996).
[CrossRef]

W. S. Geisler and J. S. Perry, "A real-time foveated multi-resolution system for low-bandwidth video communication," Proc. SPIE 3299, 294-305 (1998).
[CrossRef]

E. Chang, S. Mallat, and C. K. Yap, "Wavelet foveation," Applied and Computational Harmonic Analysis 9, 312-35 (2000).
[CrossRef]

S.R. Restaino, J. T. Baker, D. C. Dayton, D. Werling, and S. L. Browne, "State of the art in liquid crystal technologies for wavefront compensation: an AFRL perspective," Proc. SPIE 4167, 157-161 (2000).

P. F. McManamon, T. A. Dorschner, D. L. Corkum, L. J. Friedman, D. S. Hobbs, M. Holtz, S. Liberman, H. Q. Nguyen, D. P. Resler, R. C. Sharp, and E. A. Watson, "Optical phased array technology," Proc. IEEE 84, 268-298 (1996).
[CrossRef]

G. D. Love, "Wave-front correction and production of Zernike modes with a liquid-crystal spatial light modulator," Appl. Opt. 36, 1517-1524 (1997).
[CrossRef] [PubMed]

D. S. Acton, "Correction of static optical errors in a segmented adaptive optical system," Appl. Opt. 34, 7965-7968 (1995).
[CrossRef] [PubMed]

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Figures (5)

Fig. 1.
Fig. 1.

Optical layout for fast imaging system (f/# = 2.4) with a +/-45o field-of-view

Fig. 2.
Fig. 2.

Foveated image created from an aerial picture of airport

Fig. 3.
Fig. 3.

OPD ray fans with no correction on the SLM at (a) 0° and (b) 45°

Fig. 4.
Fig. 4.

OPD ray fans with correction on the SLM for 45° at (a) 0° and (b) 45°

Fig. 5.
Fig. 5.

OPD ray fans with correction on the SLM for 0° at (a) 0° and (b) 45°

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