Abstract

In order to make projector compact and efficient, we propose that the 2D laser source module is consisted of VCSEL array and micro-lens array. It describes packaging structure design of VCSEL array and thermal resistance calculation. A thermal 3D analysis of 3$\times$3 array based on the finite-element method (FEM) is presented. The analysis shows that the maximum internal temperature of a VCSEL array reaches 51 $^{\circ}{{C}}$. Then, it describes the principle of the micro-lens array. By ZEMAX simulation, in the micro-lens array illumination system, we have got the energy efficiency 67.3%, the light uniformity is 95.5%, respectively, on the micro-display chip at the distance of 65 mm. We have successfully built the complete 3-LCOS projection system based on the 2D source module. It can provide 1362 lm D65 light, and its total volume is ${{260}}\times {{200}}\times {{160}}\ {{mm}}^{3}$ which is more compact than the commercial projector.

© 2013 IEEE

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  1. K. V. Chellappan, E. Erden, H. Urey, "Laser-based displays: A review," Appl. Opt. 49, (2010).
  2. F. C. Gibeau, K. K. McKinney, "Compact solid state laser projector," Proc. SPIE (1997) pp. 354-361.
  3. G. Duggan, D. A. Barrow, T. Calvert, M. Maute, V. Hung, B. McGarvey, J. D. Lambkin, T. Wipiejewski, "Red vertical cavity surface emitting lasers (VCSELs) for consumer applications," Proc. SPIE (2008) pp. 69080G.
  4. J. Wang, Z. Yuan, L. Kang, K. Yang, Y. Zhang, X. Liu, "Study of the mechanism of “smile” high power diode laser arrays and strategies in improving near-field linearity," IEEE 59th Electron. Compon. Technol. Conf. (2009) pp. 837-842.
  5. P. Y. Wang, A. Gheen, Z. Wang, "Beam shaping technology for laser diode arrays," Proc. SPIE (2002) pp. 131-135.
  6. D. Rui, Z. Lin, K. Qi, W. Chen, "Optical design in illumination system of digital light processing projector using laser and gradient-index lens," Opt. Eng. 51, 013004 (2012).
  7. K. Kasazumi, Y. Kitaoka, K. Mizuuchi, K. Yamamoto, "A practical laser projector with new illumination optics for reduction of speckle noise," Jpn. J. Appl. Phys. 43, 5904-5906 (2004).
  8. L. D. Hennig P., "Highly thermally conductive substrates with adjustable CTE for diode laser bar packaging," Proc. SPIE (2003) pp. 174-185.
  9. M. Osinski, W. Nakwaski, "Thermal analysis of closely-packed two-dimensional etched well surface-emitting laser arrays," IEEE J. Sel. Topics Quantum Electron. 1, 681-696 (1995).
  10. J. Wang, I. Savidis, E. G. Friedman, "Thermal analysis of oxide-confined VCSEL arrays," Microelectron. J. 42, 820-825 (2011).
  11. G. F. Jin, W. B. Lee, C. F. Cheung, S. To, "Microlens array homogenizer for laser illuminated projector," Key Eng. Mater. 364–366, 143-147.
  12. I. Harder, M. Lano, N. Lindlein, J. Schwider, "homogenization and beam shaping with microlens arrays," Proc. SPIE (2004) pp. 99-107.
  13. J. W. Goodman, "Some fundamental properties of speckle," J. Opt Soc. Amer. 66, 1145-1150 (1976).
  14. J. W. Goodman, "Speckle with a finite number of steps," Appl. Opt. 47, A111-A118 (2008).

2012

D. Rui, Z. Lin, K. Qi, W. Chen, "Optical design in illumination system of digital light processing projector using laser and gradient-index lens," Opt. Eng. 51, 013004 (2012).

2011

J. Wang, I. Savidis, E. G. Friedman, "Thermal analysis of oxide-confined VCSEL arrays," Microelectron. J. 42, 820-825 (2011).

2010

K. V. Chellappan, E. Erden, H. Urey, "Laser-based displays: A review," Appl. Opt. 49, (2010).

2008

2004

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

1995

M. Osinski, W. Nakwaski, "Thermal analysis of closely-packed two-dimensional etched well surface-emitting laser arrays," IEEE J. Sel. Topics Quantum Electron. 1, 681-696 (1995).

1976

J. W. Goodman, "Some fundamental properties of speckle," J. Opt Soc. Amer. 66, 1145-1150 (1976).

Appl. Opt.

K. V. Chellappan, E. Erden, H. Urey, "Laser-based displays: A review," Appl. Opt. 49, (2010).

J. W. Goodman, "Speckle with a finite number of steps," Appl. Opt. 47, A111-A118 (2008).

IEEE J. Sel. Topics Quantum Electron.

M. Osinski, W. Nakwaski, "Thermal analysis of closely-packed two-dimensional etched well surface-emitting laser arrays," IEEE J. Sel. Topics Quantum Electron. 1, 681-696 (1995).

J. Opt Soc. Amer.

J. W. Goodman, "Some fundamental properties of speckle," J. Opt Soc. Amer. 66, 1145-1150 (1976).

Jpn. J. Appl. Phys.

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

Key Eng. Mater.

G. F. Jin, W. B. Lee, C. F. Cheung, S. To, "Microlens array homogenizer for laser illuminated projector," Key Eng. Mater. 364–366, 143-147.

Microelectron. J.

J. Wang, I. Savidis, E. G. Friedman, "Thermal analysis of oxide-confined VCSEL arrays," Microelectron. J. 42, 820-825 (2011).

Opt. Eng.

D. Rui, Z. Lin, K. Qi, W. Chen, "Optical design in illumination system of digital light processing projector using laser and gradient-index lens," Opt. Eng. 51, 013004 (2012).

Other

I. Harder, M. Lano, N. Lindlein, J. Schwider, "homogenization and beam shaping with microlens arrays," Proc. SPIE (2004) pp. 99-107.

L. D. Hennig P., "Highly thermally conductive substrates with adjustable CTE for diode laser bar packaging," Proc. SPIE (2003) pp. 174-185.

F. C. Gibeau, K. K. McKinney, "Compact solid state laser projector," Proc. SPIE (1997) pp. 354-361.

G. Duggan, D. A. Barrow, T. Calvert, M. Maute, V. Hung, B. McGarvey, J. D. Lambkin, T. Wipiejewski, "Red vertical cavity surface emitting lasers (VCSELs) for consumer applications," Proc. SPIE (2008) pp. 69080G.

J. Wang, Z. Yuan, L. Kang, K. Yang, Y. Zhang, X. Liu, "Study of the mechanism of “smile” high power diode laser arrays and strategies in improving near-field linearity," IEEE 59th Electron. Compon. Technol. Conf. (2009) pp. 837-842.

P. Y. Wang, A. Gheen, Z. Wang, "Beam shaping technology for laser diode arrays," Proc. SPIE (2002) pp. 131-135.

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