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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 18 — Aug. 30, 2010
  • pp: 18932–18944

Design and fabrication of a fingerprint imager with compact LED illumination and compact imaging optics

Jae Young Joo, Do-Kyun Woo, Soon Sub Park, and Sun-Kyu Lee  »View Author Affiliations

Optics Express, Vol. 18, Issue 18, pp. 18932-18944 (2010)

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In this study, we presented a light-emitting diode-based (LED) miniaturized optical pattern imager for slim mobile phone application. To meet volume constraints, we designed a miniaturized compact illuminating and imaging optical component. The objective was to minimize optical loss using several nano- and micro-fabrication methods. After integration into a single optical body, the prototype imager–with dimensions of 6.8 × 2.2 × 2.5 mm and a weight of 0.4 g–demonstrated clear feasibility in measuring 2D micropatterns with widths of 50 and 10 μm.

© 2010 OSA

OCIS Codes
(110.2970) Imaging systems : Image detection systems
(130.3120) Integrated optics : Integrated optics devices
(220.1920) Optical design and fabrication : Diamond machining
(220.4000) Optical design and fabrication : Microstructure fabrication
(230.3670) Optical devices : Light-emitting diodes
(110.2945) Imaging systems : Illumination design
(080.4295) Geometric optics : Nonimaging optical systems

ToC Category:
Imaging Systems

Original Manuscript: June 10, 2010
Revised Manuscript: August 14, 2010
Manuscript Accepted: August 18, 2010
Published: August 20, 2010

Jae Young Joo, Do-Kyun Woo, Soon Sub Park, and Sun-Kyu Lee, "Design and fabrication of a fingerprint imager with compact LED illumination and compact imaging optics," Opt. Express 18, 18932-18944 (2010)

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  1. I. Fujieda, K. Tai, E. Matsuyama, and M. Kurita, “Dual-LED imaging system for secure fingerprint identification,” Proc. of SPIE 6049, 60490B–1- 60490B–9 (2005).
  2. http://www.crucialtec.com/ .
  3. X. J. Yu, Y. L. Ho, L. Tan, H. C. Huang, and H. S. Kwok, “LED Based Projection Systems,” J. Disp. Technol. 3(3), 295–303 (2007). [CrossRef]
  4. R. Iijima, M. Fujimoto, Y. Maruo, M. Nakatsuka, T. Inui, S. Abe, and Y. Unuma, “Document scanner using polymer waveguides with a microlens array,” Opt. Eng. 41(11), 2743–2748 (2002). [CrossRef]
  5. L. Nguyen, “Wafer-Level chip-scale packaging,” in Proceedings of Professional Development Course 55th Electronic Components & Technology Conference, (Orlando, Florida, 2005), pp. 4–19.
  6. P. Schreiber, S. Kudaev, P. Dannberg, and A. Gebhardt, “Microoptics for homogeneous LED-illumination,” Proc. SPIE 6196, 61960–1 - 61960–9 (2006).
  7. Y. Ding, X. Liu, Z. R. Zheng, and P. F. Gu, “Freeform LED lens for uniform illumination,” Opt. Express 16(17), 12958–12966 (2008). [CrossRef] [PubMed]
  8. F. Fournier and J. Rolland, “Design Methodology for High Brightness Projectors,” J. Disp. Technol. 4(1), 86–91 (2008). [CrossRef]
  9. X. Zhao, Z. L. Fang, J. C. Cui, X. Zhang, and G. G. Mu, “Illumination system using LED sources for pocket-size projectors,” Appl. Opt. 46(4), 522–526 (2007). [CrossRef] [PubMed]
  10. T. Imamura, K. Kakutani, and I. Fujieda, “Imaging simulated smeared fingers with a sensor based on scattered-light detection,” Opt. Rev. 15(3), 143–147 (2008). [CrossRef]
  11. K. Tai, E. Matsuyama, M. Kurita, and I. Fujieda, “Dual-LED imaging for finger liveliness detection and its evaluation with replicas,” Appl. Opt. 45(24), 6263–6269 (2006). [CrossRef] [PubMed]
  12. C. C. Sun, W. T. Chien, I. Moreno, C. C. Hsieh, and Y. C. Lo, “Analysis of the far-field region of LEDs,” Opt. Express 17(16), 13918–13927 (2009). [CrossRef] [PubMed]
  13. I. Ashdown, and M. Salsbury, “A Near-field Goniospectroradiometer for LED Measurements,” Proc. SPIE 6342, 634215–1 - 634215–11 (2006).
  14. F. Hu, K. Y. Qian, and Y. Luo, “Far-field pattern simulation of flip-chip bonded power light-emitting diodes by a Monte Carlo photon-tracing method,” Appl. Opt. 44(14), 2768–2771 (2005). [CrossRef] [PubMed]
  15. I. Moreno and C. C. Sun, “LED array: where does far-field begin?” Proc. SPIE 7058, 70580R (2008). [CrossRef]
  16. J. Y. Joo, C. S. Kang, S. S. Park, and S. K. Lee, “LED beam shaping lens based on the near-field illumination,” Opt. Express 17(26), 23449–23458 (2009). [CrossRef]
  17. C. C. Sun, T. X. Lee, S. H. Ma, Y. L. Lee, and S. M. Huang, “Precise optical modeling for LED lighting verified by cross correlation in the midfield region,” Opt. Lett. 31(14), 2193–2195 (2006). [CrossRef] [PubMed]
  18. I. Moreno and C. C. Sun, “Modeling the radiation pattern of LEDs,” Opt. Express 16(3), 1808–1819 (2008). [CrossRef] [PubMed]
  19. J. Y. Joo and S. K. Lee, “Miniaturized TIR Fresnel lens for miniature optical LED applications,” Int. J. Precis. Eng. Manuf. 10(2), 137–140 (2009). [CrossRef]
  20. N. Maluf, and K. Williams, An Introduction to microelectromechanical systems engineering (Artech house Inc., Norwood, 2004).
  21. F. L. Pedrotti, and S. Leno, Introduction to optics (Prentice-Hall, New Jersey, 1987).
  22. D. K. Woo, K. Hane, and S. K. Lee, “Fabrication of a multi-level lens using independent-exposure lithography and FAB plasma etching,” J. Opt. A, Pure Appl. Opt. 10(4), 044001 (2008). [CrossRef]
  23. D. K. Woo, K. Hane, and S. K. Lee, “High order diffraction grating using v-shaped groove with refractive and reflective surfaces,” Opt. Express 16(25), 21004–21011 (2008). [CrossRef] [PubMed]
  24. J. S. Fender and J. E. Harvey, “Specifying surface finish and scattering tolerances of conical optical elements,” Opt. Eng. 21, 983–986 (1982).
  25. J. Y. Joo, C. S. Kang, S. S. Park, and S. K. Lee, “Fabrication of a beam shaping lens for chip scale packaged LEDs,” International Conference on Precision Engineering 2010 (to be published).
  26. S. H. Ng and Z. F. Wang, “Hot embossing on polymethyl methacrylate,” Singapore Inst. Manuf. Technol. Rep. 8(3), 174–177 (2007).
  27. M. T. Gale, “Replication techniques for diffractive optical elements,” Microelectron. Eng. 34(3-4), 321–339 (1997). [CrossRef]

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