Abstract

We utilize spatial and angular diversity to achieve speckle reduction in laser illumination. Both free-space and imaging geometry configurations are considered. A fast two-dimensional scanning micromirror is employed to steer the laser beam. A simple experimental setup is built to demonstrate the application of our technique in a two-dimensional laser picture projection. Experimental results show that the speckle contrast factor can be reduced down to 5% within the integration time of the detector.

© 2010 Optical Society of America

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  1. J. W. Goodman , Speckle Phenomena in Optics: Theory and Applications (Roberts, 2006).
  2. S. Lowenthal and D. Joyeux , “Speckle removal by slowly moving diffuser associated with a motionless diffuser,” J. Opt. Soc. Am. 61, 847-851 (1971).
    [CrossRef]
  3. L. Wang , T. Tschudi , T. Halldorsson , and P. R. Petursson , “Speckle reduction in laser projection systems by diffractive optical elements,” Appl. Opt. 37, 1770-1775 (1998).
    [CrossRef]
  4. L. Wang , T. Tschudi , M. Boeddinghaus , A. Elbert , T. Halldorsson , and P. R. Petursson , “Speckle reduction in laser projections with ultrasonic waves,” Opt. Eng. 39, 1659-1664(2000).
    [CrossRef]
  5. N. George and A. Jain , “Speckle reduction using multiple tones of illumination,” Appl. Opt. 12, 1202-1212 (1973).
    [CrossRef] [PubMed]
  6. K. Kasazumi , Y. Kitaoka , K. Mizuuchi , and K. Yamamoto , “A practical laser projector with new illumination optics for reduction of speckle noise,” Jpn. J. Appl. Phys. 43, 5904-5906 (2004).
    [CrossRef]
  7. V. Yurlov , A. Lapchuk , S. Yun , J. Song , and H. Yang , “Speckle suppression in scanning laser display,” Appl. Opt. 47, 179-187(2008).
    [CrossRef] [PubMed]
  8. V. Yurlov , A. Lapchuk , S. Yun , J. Song , I. Yeo , H. Yang , and S. An , “Speckle suppression in scanning laser displays: aberration and defocusing of the projection system,” Appl. Opt. 48, 80-90 (2009).
    [CrossRef]
  9. M. Nadeem Akram , V. Kartashov , and Z. Tong , “Speckle reduction in line-scan laser projectors using binary phase codes,” Opt. Lett. 35, 444-446 (2010).
    [CrossRef] [PubMed]
  10. S. An , A. Lapchuk , V. Yurlov , J. Song , H. Park , J. Jang , W. Shin , S. Karagpoltsev , and S. Yun , “Speckle suppression in scanning laser display using several partially coherent beams,” Opt. Express 17, 92-103 (2009).
    [CrossRef] [PubMed]
  11. J. I. Trisnadi , “Hadamard speckle contrast reduction,” Opt. Lett. 29, 11-13 (2004).
    [CrossRef] [PubMed]
  12. J. I. Trisnadi , “Speckle contrast reduction in laser projection displays,” Proc. SPIE 4657, 131 (2002).
    [CrossRef]
  13. I. Peled , M. Zinou , B. Greenberg , and Z. Kotler , “MEMS based speckle reduction obtained by angle diversity for fast imaging,” in Conference on Lasers and Electro-Optics/International Quantum Electronics Conference (Optical Society of America, 2009), paper JTuD44.
  14. W.-C. Wang , J. Lu , and A. K. Y. Yen , “Electro-optic polymer prism beam deflector,” Opt. Eng. 48, 1146011(2009).
    [CrossRef]
  15. Texas Instruments “Single panel DLP projection system optics,” Application report, discovery DLPA002 (2005).

2010

M. Nadeem Akram , V. Kartashov , and Z. Tong , “Speckle reduction in line-scan laser projectors using binary phase codes,” Opt. Lett. 35, 444-446 (2010).
[CrossRef] [PubMed]

2009

S. An , A. Lapchuk , V. Yurlov , J. Song , H. Park , J. Jang , W. Shin , S. Karagpoltsev , and S. Yun , “Speckle suppression in scanning laser display using several partially coherent beams,” Opt. Express 17, 92-103 (2009).
[CrossRef] [PubMed]

V. Yurlov , A. Lapchuk , S. Yun , J. Song , I. Yeo , H. Yang , and S. An , “Speckle suppression in scanning laser displays: aberration and defocusing of the projection system,” Appl. Opt. 48, 80-90 (2009).
[CrossRef]

W.-C. Wang , J. Lu , and A. K. Y. Yen , “Electro-optic polymer prism beam deflector,” Opt. Eng. 48, 1146011(2009).
[CrossRef]

2008

2004

K. Kasazumi , Y. Kitaoka , K. Mizuuchi , and K. Yamamoto , “A practical laser projector with new illumination optics for reduction of speckle noise,” Jpn. J. Appl. Phys. 43, 5904-5906 (2004).
[CrossRef]

J. I. Trisnadi , “Hadamard speckle contrast reduction,” Opt. Lett. 29, 11-13 (2004).
[CrossRef] [PubMed]

2002

J. I. Trisnadi , “Speckle contrast reduction in laser projection displays,” Proc. SPIE 4657, 131 (2002).
[CrossRef]

2000

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

1998

1973

1971

Akram, M. Nadeem

M. Nadeem Akram , V. Kartashov , and Z. Tong , “Speckle reduction in line-scan laser projectors using binary phase codes,” Opt. Lett. 35, 444-446 (2010).
[CrossRef] [PubMed]

An, S.

V. Yurlov , A. Lapchuk , S. Yun , J. Song , I. Yeo , H. Yang , and S. An , “Speckle suppression in scanning laser displays: aberration and defocusing of the projection system,” Appl. Opt. 48, 80-90 (2009).
[CrossRef]

S. An , A. Lapchuk , V. Yurlov , J. Song , H. Park , J. Jang , W. Shin , S. Karagpoltsev , and S. Yun , “Speckle suppression in scanning laser display using several partially coherent beams,” Opt. Express 17, 92-103 (2009).
[CrossRef] [PubMed]

Boeddinghaus, M.

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

Elbert, A.

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

George, N.

Goodman, J. W.

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

Greenberg, B.

I. Peled , M. Zinou , B. Greenberg , and Z. Kotler , “MEMS based speckle reduction obtained by angle diversity for fast imaging,” in Conference on Lasers and Electro-Optics/International Quantum Electronics Conference (Optical Society of America, 2009), paper JTuD44.

Halldorsson, T.

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

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

Jain, A.

Jang, J.

S. An , A. Lapchuk , V. Yurlov , J. Song , H. Park , J. Jang , W. Shin , S. Karagpoltsev , and S. Yun , “Speckle suppression in scanning laser display using several partially coherent beams,” Opt. Express 17, 92-103 (2009).
[CrossRef] [PubMed]

Joyeux, D.

Karagpoltsev, S.

S. An , A. Lapchuk , V. Yurlov , J. Song , H. Park , J. Jang , W. Shin , S. Karagpoltsev , and S. Yun , “Speckle suppression in scanning laser display using several partially coherent beams,” Opt. Express 17, 92-103 (2009).
[CrossRef] [PubMed]

Kartashov, V.

M. Nadeem Akram , V. Kartashov , and Z. Tong , “Speckle reduction in line-scan laser projectors using binary phase codes,” Opt. Lett. 35, 444-446 (2010).
[CrossRef] [PubMed]

Kasazumi, K.

K. Kasazumi , Y. Kitaoka , K. Mizuuchi , and K. Yamamoto , “A practical laser projector with new illumination optics for reduction of speckle noise,” Jpn. J. Appl. Phys. 43, 5904-5906 (2004).
[CrossRef]

Kitaoka, Y.

K. Kasazumi , Y. Kitaoka , K. Mizuuchi , and K. Yamamoto , “A practical laser projector with new illumination optics for reduction of speckle noise,” Jpn. J. Appl. Phys. 43, 5904-5906 (2004).
[CrossRef]

Kotler, Z.

I. Peled , M. Zinou , B. Greenberg , and Z. Kotler , “MEMS based speckle reduction obtained by angle diversity for fast imaging,” in Conference on Lasers and Electro-Optics/International Quantum Electronics Conference (Optical Society of America, 2009), paper JTuD44.

Lapchuk, A.

S. An , A. Lapchuk , V. Yurlov , J. Song , H. Park , J. Jang , W. Shin , S. Karagpoltsev , and S. Yun , “Speckle suppression in scanning laser display using several partially coherent beams,” Opt. Express 17, 92-103 (2009).
[CrossRef] [PubMed]

V. Yurlov , A. Lapchuk , S. Yun , J. Song , I. Yeo , H. Yang , and S. An , “Speckle suppression in scanning laser displays: aberration and defocusing of the projection system,” Appl. Opt. 48, 80-90 (2009).
[CrossRef]

V. Yurlov , A. Lapchuk , S. Yun , J. Song , and H. Yang , “Speckle suppression in scanning laser display,” Appl. Opt. 47, 179-187(2008).
[CrossRef] [PubMed]

Lowenthal, S.

Lu, J.

W.-C. Wang , J. Lu , and A. K. Y. Yen , “Electro-optic polymer prism beam deflector,” Opt. Eng. 48, 1146011(2009).
[CrossRef]

Mizuuchi, K.

K. Kasazumi , Y. Kitaoka , K. Mizuuchi , and K. Yamamoto , “A practical laser projector with new illumination optics for reduction of speckle noise,” Jpn. J. Appl. Phys. 43, 5904-5906 (2004).
[CrossRef]

Park, H.

S. An , A. Lapchuk , V. Yurlov , J. Song , H. Park , J. Jang , W. Shin , S. Karagpoltsev , and S. Yun , “Speckle suppression in scanning laser display using several partially coherent beams,” Opt. Express 17, 92-103 (2009).
[CrossRef] [PubMed]

Peled, I.

I. Peled , M. Zinou , B. Greenberg , and Z. Kotler , “MEMS based speckle reduction obtained by angle diversity for fast imaging,” in Conference on Lasers and Electro-Optics/International Quantum Electronics Conference (Optical Society of America, 2009), paper JTuD44.

Petursson, P. R.

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

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

Shin, W.

S. An , A. Lapchuk , V. Yurlov , J. Song , H. Park , J. Jang , W. Shin , S. Karagpoltsev , and S. Yun , “Speckle suppression in scanning laser display using several partially coherent beams,” Opt. Express 17, 92-103 (2009).
[CrossRef] [PubMed]

Song, J.

S. An , A. Lapchuk , V. Yurlov , J. Song , H. Park , J. Jang , W. Shin , S. Karagpoltsev , and S. Yun , “Speckle suppression in scanning laser display using several partially coherent beams,” Opt. Express 17, 92-103 (2009).
[CrossRef] [PubMed]

V. Yurlov , A. Lapchuk , S. Yun , J. Song , I. Yeo , H. Yang , and S. An , “Speckle suppression in scanning laser displays: aberration and defocusing of the projection system,” Appl. Opt. 48, 80-90 (2009).
[CrossRef]

V. Yurlov , A. Lapchuk , S. Yun , J. Song , and H. Yang , “Speckle suppression in scanning laser display,” Appl. Opt. 47, 179-187(2008).
[CrossRef] [PubMed]

Tong, Z.

M. Nadeem Akram , V. Kartashov , and Z. Tong , “Speckle reduction in line-scan laser projectors using binary phase codes,” Opt. Lett. 35, 444-446 (2010).
[CrossRef] [PubMed]

Trisnadi, J. I.

J. I. Trisnadi , “Hadamard speckle contrast reduction,” Opt. Lett. 29, 11-13 (2004).
[CrossRef] [PubMed]

J. I. Trisnadi , “Speckle contrast reduction in laser projection displays,” Proc. SPIE 4657, 131 (2002).
[CrossRef]

Tschudi, T.

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

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

Wang, L.

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

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

Wang, W.-C.

W.-C. Wang , J. Lu , and A. K. Y. Yen , “Electro-optic polymer prism beam deflector,” Opt. Eng. 48, 1146011(2009).
[CrossRef]

Yamamoto, K.

K. Kasazumi , Y. Kitaoka , K. Mizuuchi , and K. Yamamoto , “A practical laser projector with new illumination optics for reduction of speckle noise,” Jpn. J. Appl. Phys. 43, 5904-5906 (2004).
[CrossRef]

Yang, H.

V. Yurlov , A. Lapchuk , S. Yun , J. Song , I. Yeo , H. Yang , and S. An , “Speckle suppression in scanning laser displays: aberration and defocusing of the projection system,” Appl. Opt. 48, 80-90 (2009).
[CrossRef]

V. Yurlov , A. Lapchuk , S. Yun , J. Song , and H. Yang , “Speckle suppression in scanning laser display,” Appl. Opt. 47, 179-187(2008).
[CrossRef] [PubMed]

Yen, A. K. Y.

W.-C. Wang , J. Lu , and A. K. Y. Yen , “Electro-optic polymer prism beam deflector,” Opt. Eng. 48, 1146011(2009).
[CrossRef]

Yeo, I.

V. Yurlov , A. Lapchuk , S. Yun , J. Song , I. Yeo , H. Yang , and S. An , “Speckle suppression in scanning laser displays: aberration and defocusing of the projection system,” Appl. Opt. 48, 80-90 (2009).
[CrossRef]

Yun, S.

V. Yurlov , A. Lapchuk , S. Yun , J. Song , I. Yeo , H. Yang , and S. An , “Speckle suppression in scanning laser displays: aberration and defocusing of the projection system,” Appl. Opt. 48, 80-90 (2009).
[CrossRef]

S. An , A. Lapchuk , V. Yurlov , J. Song , H. Park , J. Jang , W. Shin , S. Karagpoltsev , and S. Yun , “Speckle suppression in scanning laser display using several partially coherent beams,” Opt. Express 17, 92-103 (2009).
[CrossRef] [PubMed]

V. Yurlov , A. Lapchuk , S. Yun , J. Song , and H. Yang , “Speckle suppression in scanning laser display,” Appl. Opt. 47, 179-187(2008).
[CrossRef] [PubMed]

Yurlov, V.

V. Yurlov , A. Lapchuk , S. Yun , J. Song , I. Yeo , H. Yang , and S. An , “Speckle suppression in scanning laser displays: aberration and defocusing of the projection system,” Appl. Opt. 48, 80-90 (2009).
[CrossRef]

S. An , A. Lapchuk , V. Yurlov , J. Song , H. Park , J. Jang , W. Shin , S. Karagpoltsev , and S. Yun , “Speckle suppression in scanning laser display using several partially coherent beams,” Opt. Express 17, 92-103 (2009).
[CrossRef] [PubMed]

V. Yurlov , A. Lapchuk , S. Yun , J. Song , and H. Yang , “Speckle suppression in scanning laser display,” Appl. Opt. 47, 179-187(2008).
[CrossRef] [PubMed]

Zinou, M.

I. Peled , M. Zinou , B. Greenberg , and Z. Kotler , “MEMS based speckle reduction obtained by angle diversity for fast imaging,” in Conference on Lasers and Electro-Optics/International Quantum Electronics Conference (Optical Society of America, 2009), paper JTuD44.

Appl. Opt.

V. Yurlov , A. Lapchuk , S. Yun , J. Song , I. Yeo , H. Yang , and S. An , “Speckle suppression in scanning laser displays: aberration and defocusing of the projection system,” Appl. Opt. 48, 80-90 (2009).
[CrossRef]

Appl. Opt.

J. Opt. Soc. Am.

Jpn. J. Appl. Phys.

K. Kasazumi , Y. Kitaoka , K. Mizuuchi , and K. Yamamoto , “A practical laser projector with new illumination optics for reduction of speckle noise,” Jpn. J. Appl. Phys. 43, 5904-5906 (2004).
[CrossRef]

Opt. Express

S. An , A. Lapchuk , V. Yurlov , J. Song , H. Park , J. Jang , W. Shin , S. Karagpoltsev , and S. Yun , “Speckle suppression in scanning laser display using several partially coherent beams,” Opt. Express 17, 92-103 (2009).
[CrossRef] [PubMed]

Opt. Lett.

M. Nadeem Akram , V. Kartashov , and Z. Tong , “Speckle reduction in line-scan laser projectors using binary phase codes,” Opt. Lett. 35, 444-446 (2010).
[CrossRef] [PubMed]

Opt. Eng.

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

W.-C. Wang , J. Lu , and A. K. Y. Yen , “Electro-optic polymer prism beam deflector,” Opt. Eng. 48, 1146011(2009).
[CrossRef]

Opt. Lett.

Proc. SPIE

J. I. Trisnadi , “Speckle contrast reduction in laser projection displays,” Proc. SPIE 4657, 131 (2002).
[CrossRef]

Other

I. Peled , M. Zinou , B. Greenberg , and Z. Kotler , “MEMS based speckle reduction obtained by angle diversity for fast imaging,” in Conference on Lasers and Electro-Optics/International Quantum Electronics Conference (Optical Society of America, 2009), paper JTuD44.

Texas Instruments “Single panel DLP projection system optics,” Application report, discovery DLPA002 (2005).

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

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Figures (6)

Fig. 1
Fig. 1

(a) MEMS two-dimensional micromirror and (b) Lissajous scan pattern of the reflected laser beam after the scanning micromirror.

Fig. 2
Fig. 2

Random surface transmission geometry.

Fig. 3
Fig. 3

Free-space speckle geometry and angle diversity.

Fig. 4
Fig. 4

Free-space geometry: (a) speckle image with micromirror stationary and (b) speckle image with micromirror oscillating.

Fig. 5
Fig. 5

Experimental setup for picture projection.

Fig. 6
Fig. 6

Picture projection geometry: (a) speckle image with micromirror stationary and (b) speckle image with micromirror oscillating.

Tables (1)

Tables Icon

Table 1 Speckle Contrast Factor C and Effective Number of Independent Speckle Patterns N Estimated Experimentally for Different Configurations

Equations (10)

Equations on this page are rendered with MathJax. Learn more.

C = σ I I = I 2 I 2 I ,
C = 1 N .
μ A ( q 1 , q 2 ) = M h ( Δ q z ) Ψ ( Δ q t ) ,
Ψ ( Δ q t ) = + I ( α , β ) e j Δ q t · α t d α d β + I ( α , β ) d α d β ,
q = q t + q z z = k o k i ,
| μ A ( q 1 , q 2 ) | 2 = | M h ( Δ q z ) | 2 | Ψ ( Δ q t ) | 2 .
| M h ( Δ q z ) | 2 = e σ h 2 Δ q z 2 ,
| Ψ ( Δ q t ) | 2 = [ 2 J 1 ( 0.5 D Δ q t ) 0.5 D Δ q t ] 2 ,
Δ q z = 2 π λ ( n 2 sin 2 θ i 2 n 2 sin 2 θ i 1 ) ,
Δ q t = 2 π λ ( sin θ i 2 sin θ i 1 ) .

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