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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 18 — Sep. 3, 2007
  • pp: 11328–11335

Liquid crystal lens with large focal length tunability and low operating voltage

Hongwen Ren, David W. Fox, Benjamin Wu, and Shin-Tson Wu  »View Author Affiliations

Optics Express, Vol. 15, Issue 18, pp. 11328-11335 (2007)

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We demonstrate a tunable focus liquid crystal (LC) lens by sandwiching a homogeneous LC layer between a planar electrode and a curved electrode. The curved electrode which is made of conductive polymer has parabolic shape with a large apex distance. Such design dramatically reduces the phase loss which leads to a short focal length (~15 cm). By using a thin top glass substrate on the curved electrode side, the operating voltage of the lens cell for achieving the shortest focal length is reduced to ~23 Vrms. This LC lens has advantages in large focal length tunability, low operating voltage, and good mechanical stability.

© 2007 Optical Society of America

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(160.3710) Materials : Liquid crystals
(220.3620) Optical design and fabrication : Lens system design

ToC Category:
Adaptive Optics

Original Manuscript: June 7, 2007
Revised Manuscript: July 18, 2007
Manuscript Accepted: August 17, 2007
Published: August 22, 2007

Hongwen Ren, David W. Fox, Benjamin Wu, and Shin-Tson Wu, "Liquid crystal lens with large focal length tunability and low operating voltage," Opt. Express 15, 11328-11335 (2007)

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  1. S. Sato, "Liquid-crystal lens-cells with variable focal length," Jpn. J. Appl. Phys. 18, 1679-1684 (1979). [CrossRef]
  2. H. Ren, D. W. Fox, P. A. Anderson, B. Wu, and S. T. Wu, "Tunable-focus liquid lens controlled using a servo motor," Opt. Express 14, 8031-8036 (2006). [CrossRef] [PubMed]
  3. H. Ren and S. T. Wu, "Variable-focus liquid lens," Opt. Express 15, 5931-5936 (2007). [CrossRef] [PubMed]
  4. W. L. IJzerman, S. T. de Zwart, and T. Dekker, "Design of 2D/3D switchable displays," SID Symposium Digest, 36, 98-101 (2005). [CrossRef]
  5. S. Suyama, M. Date, and H. Takada, "Three-dimensional display system with dual-frequency liquid-crystal varifocal lens," Jpn. J. Appl. Phys. Part 1,  38, 480-484 (2000). [CrossRef]
  6. M. Hain, R. Glockner, S. Bhattacharya, D, Dias, S. Stankovic, and T. Tschudi "Fast switching liquid crystal lenses for a dual focus digital versatile disc pickup,"Opt. Commun,  188, 291-299 (2001). [CrossRef]
  7. T. L. Kelly, A. F. Naumov, M. Yu. Loktev, and M. A. Rakhmatulin, "Focusing of astigmatic laser diode beam by combination of adaptive liquid crystal lenses," Opt. Commun. 181, 295-301 (2000). [CrossRef]
  8. H. Ren and S. T. Wu, "Inhomogeneous polymer-dispersed liquid crystals with gradient refractive index," Appl. Phys. Lett. 81, 3537-3539 (2002). [CrossRef]
  9. H. Ren, Y. H. Fan, and S. T. Wu, "Tunable Fresnel lens using nanoscale polymer-dispersed liquid crystals," Appl. Phys. Lett. 83, 1515-1517 (2003). [CrossRef]
  10. B. Wang, M. Ye, M. Honma, T. Nose, and S. Sato, "Liquid crystal lens with spherical electrode," Jpn. J. Appl. Phys. 41, L1232 -L1233 (2002). [CrossRef]
  11. H. Ren, Y. H. Fan, S. Gauza, and S. T. Wu, "Tunable flat liquid crystal spherical lens," Appl. Phys. Lett. 84, 4789-4791 (2004). [CrossRef]
  12. B. Wang, M. Ye, and S. Sato, "Lens of electrically controllable focal length made by a glass lens and liquid crystal layers," Appl. Opt. 43, 3420-3425 (2004). [CrossRef] [PubMed]
  13. B. Wang, M. Ye, and S. Sato, "Experimental and numerical studies on liquid crystal lens with spherical electrode", Mol. Cryst. Liq. Cryst.,  433, 217-227 (2005). [CrossRef]
  14. Y. H. Fan, H. Ren, X. Liang, H. Wang, and S. T. Wu, "Liquid crystal microlens arrays with switchable positive and negative focal lengths," J. Display Technology. 1, 151-156 (2005). [CrossRef]
  15. H. Ren and S. T. Wu, "Adaptive liquid crystal lens with large focal length tunability," Opt. Express 14, 11292-11298 (2006). [CrossRef] [PubMed]
  16. I. Bruce, "Concerning drops," Am. J. Phys. 52, 1102-1105 (1984). [CrossRef]
  17. S. Vafaei and M. Z. Podowski, "Theoretical analysis on the effect of liquid droplet geometry on contact angle," Nuclear Engineering and Design 235, 1293-1301 (2005). [CrossRef]
  18. S. T. Wu, U. Efron, and L. D. Hess, "Birefringence measurements of liquid crystals," Appl. Opt. 23, 3911-3915 (1984). [CrossRef] [PubMed]
  19. S. Gauza, H. Wang, C. H. Wen, S. T. Wu, A. J. Seed and R. Dąbrowski, "High birefringence isothiocyanato tolane liquid crystals," Jpn. J. Appl. Phys. Part 1,  42, 3463-3466 (2003). [CrossRef]
  20. A. Spadło, R. Dąbrowski, M. Filipowicz, Z. Stolarz, J. Przedmojski, S. Gauza, Y. H. Fan, and S. T. Wu "Synthesis, mesomorphic and optical properties of isothiocyanatotolanes," Liq. Cryst. 30, 191-198 (2003). [CrossRef]

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