Abstract

Currently the major issues in applying the laser as an illumination source for projectors are beam shaping and laser speckle. We present a compact total solution for both issues by using a diffractive beam shaper associated with a cylindrical lens for the illumination optics and a vibrating motor attached to the beam shaper to eliminate speckle on the projection screen. The diffractive beam shaper features a double-sided microlens array with a lateral shift to each other. The illumination pattern is free of zero diffraction order mainly due to the continuous and spherical surface relief of the lenslet, which can be accurately fabricated with diamond turning and injection molding without quantizing surface relief, so that the illumination pattern on the microdisplay can match the design very well with high diffraction efficiency. In addition, the vibration of the diffractive beam shaper in the longitudinal mode has been found effective for eliminating the dot pattern in the illumination and reducing laser speckle on the projection screen. The proposed laser illuminator has been implemented on a three-panel LCoS projector engine to replace the traditional UHP lamp. The uniformity and speckle contrast are measured to be 78% and 5.5% respectively, which demonstrates the feasibility and potential of the proposed scheme.

© 2012 OSA

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References

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2010 (4)

2009 (2)

P. C. Chen, C. C. Chen, P. H. Yao, and C. H. Chen, “Double side lenslet array for illumination optics of laser projector,” Proc. SPIE 7232, 72320X, 72320X-9 (2009).
[CrossRef]

L. Golan and S. Shoham, “Speckle elimination using shift-averaging in high-rate holographic projection,” Opt. Express 17(3), 1330–1339 (2009).
[CrossRef] [PubMed]

2008 (1)

A. Furukawa, N. Ohse, Y. Sato, D. Imanishi, K. Wakabayashi, S. Ito, K. Tamamura, and S. Hirata, “Effective speckle reduction in laser projection displays,” Proc. SPIE 6911, 69110T, 69110T-7 (2008).
[CrossRef]

2007 (5)

2000 (2)

L. L. Wang, T. Tschudi, M. Boeddinghaus, A. Elbert, T. Halldorsson, and P. Petursson, “Speckle reduction in laser projections with ultrasonic waves,” Opt. Eng. 39(6), 1659–1664 (2000).
[CrossRef]

C. M. Chang and H. P. D. Shieh, “Design of illumination and projection optics for projectors with single digital micromirror devices,” Appl. Opt. 39(19), 3202–3208 (2000).
[CrossRef] [PubMed]

1998 (1)

1996 (1)

T. Iwai and T. Asakura, “Speckle reduction in coherent information processing,” Proc. IEEE 84(5), 765–781 (1996).
[CrossRef]

1976 (2)

Akram, M. N.

Asakura, T.

T. Iwai and T. Asakura, “Speckle reduction in coherent information processing,” Proc. IEEE 84(5), 765–781 (1996).
[CrossRef]

Boeddinghaus, M.

L. L. Wang, T. Tschudi, M. Boeddinghaus, A. Elbert, T. Halldorsson, and P. Petursson, “Speckle reduction in laser projections with ultrasonic waves,” Opt. Eng. 39(6), 1659–1664 (2000).
[CrossRef]

Bräuer, A.

Chang, C. M.

Chang, J. Y.

Chen, C. C.

P. C. Chen, C. C. Chen, P. H. Yao, and C. H. Chen, “Double side lenslet array for illumination optics of laser projector,” Proc. SPIE 7232, 72320X, 72320X-9 (2009).
[CrossRef]

Chen, C. H.

P. C. Chen, C. C. Chen, P. H. Yao, and C. H. Chen, “Double side lenslet array for illumination optics of laser projector,” Proc. SPIE 7232, 72320X, 72320X-9 (2009).
[CrossRef]

Chen, P. C.

P. C. Chen, C. C. Chen, P. H. Yao, and C. H. Chen, “Double side lenslet array for illumination optics of laser projector,” Proc. SPIE 7232, 72320X, 72320X-9 (2009).
[CrossRef]

Chen, X. Y.

Craggs, G. M. J.

G. M. J. Craggs, F. Riechert, Y. Meuret, H. Thienpont, U. Lemmer, and G. Verschaffelt, “Low-speckle laser projection using farfield nonmodal emission of a broad-area vertical-cavity surface-emitting laser,” Proc. SPIE 7720, 772020, 772020-8 (2010).
[CrossRef]

Cui, J. C.

Dannberg, P.

Dorrer, C.

Elbert, A.

L. L. Wang, T. Tschudi, M. Boeddinghaus, A. Elbert, T. Halldorsson, and P. Petursson, “Speckle reduction in laser projections with ultrasonic waves,” Opt. Eng. 39(6), 1659–1664 (2000).
[CrossRef]

Fang, Z. L.

Furukawa, A.

A. Furukawa, N. Ohse, Y. Sato, D. Imanishi, K. Wakabayashi, S. Ito, K. Tamamura, and S. Hirata, “Effective speckle reduction in laser projection displays,” Proc. SPIE 6911, 69110T, 69110T-7 (2008).
[CrossRef]

Golan, L.

Goodman, J. W.

Halldorsson, T.

L. L. Wang, T. Tschudi, M. Boeddinghaus, A. Elbert, T. Halldorsson, and P. Petursson, “Speckle reduction in laser projections with ultrasonic waves,” Opt. Eng. 39(6), 1659–1664 (2000).
[CrossRef]

Halldórsson, T.

Hirata, S.

A. Furukawa, N. Ohse, Y. Sato, D. Imanishi, K. Wakabayashi, S. Ito, K. Tamamura, and S. Hirata, “Effective speckle reduction in laser projection displays,” Proc. SPIE 6911, 69110T, 69110T-7 (2008).
[CrossRef]

Imanishi, D.

A. Furukawa, N. Ohse, Y. Sato, D. Imanishi, K. Wakabayashi, S. Ito, K. Tamamura, and S. Hirata, “Effective speckle reduction in laser projection displays,” Proc. SPIE 6911, 69110T, 69110T-7 (2008).
[CrossRef]

Ito, S.

A. Furukawa, N. Ohse, Y. Sato, D. Imanishi, K. Wakabayashi, S. Ito, K. Tamamura, and S. Hirata, “Effective speckle reduction in laser projection displays,” Proc. SPIE 6911, 69110T, 69110T-7 (2008).
[CrossRef]

Iwai, T.

T. Iwai and T. Asakura, “Speckle reduction in coherent information processing,” Proc. IEEE 84(5), 765–781 (1996).
[CrossRef]

Kartashov, V.

Lan, H. C.

Lemmer, U.

G. M. J. Craggs, F. Riechert, Y. Meuret, H. Thienpont, U. Lemmer, and G. Verschaffelt, “Low-speckle laser projection using farfield nonmodal emission of a broad-area vertical-cavity surface-emitting laser,” Proc. SPIE 7720, 772020, 772020-8 (2010).
[CrossRef]

Meuret, Y.

G. M. J. Craggs, F. Riechert, Y. Meuret, H. Thienpont, U. Lemmer, and G. Verschaffelt, “Low-speckle laser projection using farfield nonmodal emission of a broad-area vertical-cavity surface-emitting laser,” Proc. SPIE 7720, 772020, 772020-8 (2010).
[CrossRef]

Mu, G. G.

Nafarrate, A. B.

Norton, R. E.

Ohse, N.

A. Furukawa, N. Ohse, Y. Sato, D. Imanishi, K. Wakabayashi, S. Ito, K. Tamamura, and S. Hirata, “Effective speckle reduction in laser projection displays,” Proc. SPIE 6911, 69110T, 69110T-7 (2008).
[CrossRef]

Ouyang, G.

Ouyang, G. M.

Pan, J. W.

Petursson, P.

L. L. Wang, T. Tschudi, M. Boeddinghaus, A. Elbert, T. Halldorsson, and P. Petursson, “Speckle reduction in laser projections with ultrasonic waves,” Opt. Eng. 39(6), 1659–1664 (2000).
[CrossRef]

Pétursson, P. R.

Rawson, E. G.

Riechert, F.

G. M. J. Craggs, F. Riechert, Y. Meuret, H. Thienpont, U. Lemmer, and G. Verschaffelt, “Low-speckle laser projection using farfield nonmodal emission of a broad-area vertical-cavity surface-emitting laser,” Proc. SPIE 7720, 772020, 772020-8 (2010).
[CrossRef]

Sato, Y.

A. Furukawa, N. Ohse, Y. Sato, D. Imanishi, K. Wakabayashi, S. Ito, K. Tamamura, and S. Hirata, “Effective speckle reduction in laser projection displays,” Proc. SPIE 6911, 69110T, 69110T-7 (2008).
[CrossRef]

Shieh, H. P. D.

Shoham, S.

Sinzinger, S.

Sun, W. S.

Tamamura, K.

A. Furukawa, N. Ohse, Y. Sato, D. Imanishi, K. Wakabayashi, S. Ito, K. Tamamura, and S. Hirata, “Effective speckle reduction in laser projection displays,” Proc. SPIE 6911, 69110T, 69110T-7 (2008).
[CrossRef]

Thienpont, H.

G. M. J. Craggs, F. Riechert, Y. Meuret, H. Thienpont, U. Lemmer, and G. Verschaffelt, “Low-speckle laser projection using farfield nonmodal emission of a broad-area vertical-cavity surface-emitting laser,” Proc. SPIE 7720, 772020, 772020-8 (2010).
[CrossRef]

Tong, Z. M.

Tschudi, T.

L. L. Wang, T. Tschudi, M. Boeddinghaus, A. Elbert, T. Halldorsson, and P. Petursson, “Speckle reduction in laser projections with ultrasonic waves,” Opt. Eng. 39(6), 1659–1664 (2000).
[CrossRef]

L. L. Wang, T. Tschudi, T. Halldórsson, and P. R. Pétursson, “Speckle reduction in laser projection systems by diffractive optical elements,” Appl. Opt. 37(10), 1770–1775 (1998).
[CrossRef] [PubMed]

Verschaffelt, G.

G. M. J. Craggs, F. Riechert, Y. Meuret, H. Thienpont, U. Lemmer, and G. Verschaffelt, “Low-speckle laser projection using farfield nonmodal emission of a broad-area vertical-cavity surface-emitting laser,” Proc. SPIE 7720, 772020, 772020-8 (2010).
[CrossRef]

Wakabayashi, K.

A. Furukawa, N. Ohse, Y. Sato, D. Imanishi, K. Wakabayashi, S. Ito, K. Tamamura, and S. Hirata, “Effective speckle reduction in laser projection displays,” Proc. SPIE 6911, 69110T, 69110T-7 (2008).
[CrossRef]

Wang, C. M.

Wang, K. V.

Wang, L. L.

L. L. Wang, T. Tschudi, M. Boeddinghaus, A. Elbert, T. Halldorsson, and P. Petursson, “Speckle reduction in laser projections with ultrasonic waves,” Opt. Eng. 39(6), 1659–1664 (2000).
[CrossRef]

L. L. Wang, T. Tschudi, T. Halldórsson, and P. R. Pétursson, “Speckle reduction in laser projection systems by diffractive optical elements,” Appl. Opt. 37(10), 1770–1775 (1998).
[CrossRef] [PubMed]

Wippermann, F.

Yan, X.

Yao, P. H.

P. C. Chen, C. C. Chen, P. H. Yao, and C. H. Chen, “Double side lenslet array for illumination optics of laser projector,” Proc. SPIE 7232, 72320X, 72320X-9 (2009).
[CrossRef]

Zeitner, U.-D.

Zhang, S.

S. Zhang, “A simple bi-convex refractive laser beam shaper,” J. Opt. A, Pure Appl. Opt. 9(10), 945–950 (2007).
[CrossRef]

Zhang, X.

Zhao, X.

Zuegel, J. D.

Appl. Opt. (4)

J. Opt. A, Pure Appl. Opt. (1)

S. Zhang, “A simple bi-convex refractive laser beam shaper,” J. Opt. A, Pure Appl. Opt. 9(10), 945–950 (2007).
[CrossRef]

J. Opt. Soc. Am. (2)

J. Opt. Soc. Am. B (1)

Opt. Eng. (1)

L. L. Wang, T. Tschudi, M. Boeddinghaus, A. Elbert, T. Halldorsson, and P. Petursson, “Speckle reduction in laser projections with ultrasonic waves,” Opt. Eng. 39(6), 1659–1664 (2000).
[CrossRef]

Opt. Express (3)

Opt. Lett. (2)

Proc. IEEE (1)

T. Iwai and T. Asakura, “Speckle reduction in coherent information processing,” Proc. IEEE 84(5), 765–781 (1996).
[CrossRef]

Proc. SPIE (3)

P. C. Chen, C. C. Chen, P. H. Yao, and C. H. Chen, “Double side lenslet array for illumination optics of laser projector,” Proc. SPIE 7232, 72320X, 72320X-9 (2009).
[CrossRef]

A. Furukawa, N. Ohse, Y. Sato, D. Imanishi, K. Wakabayashi, S. Ito, K. Tamamura, and S. Hirata, “Effective speckle reduction in laser projection displays,” Proc. SPIE 6911, 69110T, 69110T-7 (2008).
[CrossRef]

G. M. J. Craggs, F. Riechert, Y. Meuret, H. Thienpont, U. Lemmer, and G. Verschaffelt, “Low-speckle laser projection using farfield nonmodal emission of a broad-area vertical-cavity surface-emitting laser,” Proc. SPIE 7720, 772020, 772020-8 (2010).
[CrossRef]

Other (2)

R. M. Tasso, Sales, Geoffrey Gretton, G. Michael Morris, and Daniel H. Raguin, “Beam shaping and homogenization with random microlens arrays,” in Diffractive Optics and Micro-Optics, R. Magnusson, ed., Vol. 75 of OSA Trends in Optics and Photonics Series (Optical Society of America, 2002), paper DMA3.

J. W. Goodman, Speckle Phenomena in Optics: Theory and Applications (Roberts & Company, 2006).

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