Movable or removable closures – With protective grille or safety guard – Removable
Reexamination Certificate
2009-06-21
2011-10-11
Rude, Timothy L (Department: 2871)
Movable or removable closures
With protective grille or safety guard
Removable
Reexamination Certificate
active
08033054
ABSTRACT:
Variable liquid crystal devices for controlling the propagation of light through a liquid crystal layer use a frequency dependent material to dynamically reconfigure effective electrode structures in the device. The frequency of a drive signal that generates an electric field in the device may be varied, and the frequency dependent material has different charge mobilities for the different frequencies. At a low charge mobility, the frequency dependent material has little effect on the existing electrode structures. However, at a high charge mobility, the frequency dependent material appears as an extension of the fixed electrodes, and may be used to change the effective electrode structure and, thereby, the spatial profile of the electric field. This, in turn, changes the optical properties of the liquid crystal, thus allowing the optical device to be frequency controllable.
REFERENCES:
patent: 4066333 (1978-01-01), Dargent et al.
patent: 4236150 (1980-11-01), Chern
patent: 4279474 (1981-07-01), Belgorod
patent: 4394069 (1983-07-01), Kaye
patent: 4834508 (1989-05-01), Fergason
patent: 4838657 (1989-06-01), Miura et al.
patent: 4919520 (1990-04-01), Okada et al.
patent: 5047847 (1991-09-01), Toda et al.
patent: 5473338 (1995-12-01), Prince et al.
patent: 5805243 (1998-09-01), Hatano et al.
patent: 6011930 (2000-01-01), Okubo et al.
patent: 6456419 (2002-09-01), Winker et al.
patent: 6469683 (2002-10-01), Suyama et al.
patent: 6652075 (2003-11-01), Jacobson
patent: 6888590 (2005-05-01), Nishioka et al.
patent: 7218429 (2007-05-01), Batchko
patent: 7221429 (2007-05-01), Cavanaugh et al.
patent: RE39874 (2007-10-01), Berge et al.
patent: 7427201 (2008-09-01), Meisner
patent: 7633671 (2009-12-01), Maram et al.
patent: 7724347 (2010-05-01), Tseng et al.
patent: 7738344 (2010-06-01), Ooi et al.
patent: 7755583 (2010-07-01), Meredith
patent: 2002/0145701 (2002-10-01), Sun et al.
patent: 2005/0018127 (2005-01-01), Galstian et al.
patent: 2005/0073739 (2005-04-01), Meredith et al.
patent: 2005/0099594 (2005-05-01), Blum et al.
patent: 2006/0159610 (2006-07-01), Stenzel et al.
patent: 2007/0211207 (2007-09-01), Lo et al.
patent: 2007/0229754 (2007-10-01), Galstian
patent: 2007/0263293 (2007-11-01), Batchko et al.
patent: 2298354 (2001-08-01), None
patent: 2298354 (2001-08-01), None
patent: 2470493 (2004-12-01), None
patent: 2470493 (2004-12-01), None
patent: 2644024 (2007-09-01), None
patent: 2008-203360 (2008-04-01), None
patent: WO 2007/098602 (2007-09-01), None
M. Amberg, A. Oeder, S. Sinzinger, P. J. W. Hands, and G. D. Love. Tuneable Planar Integrated Optical Systems, Optics Express, 2007, pp. 10607-10614, vol. 15, Issue 17.
Pishnyak, S. Sato, O. Lavrentovich, Electrically tunable lens based on a dual-frequency nematic liquid crystal, Applied Optics, 2006, pp. 4576-4582,V. 45, No. 19.
Lara Scolari, Thomas Alkeskjold, Jesper Riishede, Anders Bjarklev, David Hermann, Anawati Anawati, Martin Nielsen, and Paolo Bassi, Continuously tunable devices based on electrical control of dual-frequency liquid crystal filled photonic bandgap fibers, Opt. Express 13, 2005, pp. 7483-7496.
P. J.W. Hands, A. K. Kirby, and G. D. Love, Adaptive modally addressed liquid crystal lenses, Liq. Cryst. VIII, I.-C. Khoo ed., 2004, pp. 136-143, Proc. SPIE 5518.
Shiro Suyama, Munekazu Date and Hideaki Takada, Three-Dimensional Display System with Dual-Frequency Liquid-Crystal Varifocal Lens, Japanese Journal of Applied Physics, Feb. 2000, pp. 480-484, vol. 39, Part1, No. 2A.
Gleb Vdovin, Mikhail Loktev, Alexander Naumov, On the possibility of intraocular adaptive optics, Optics Express, Apr. 7, 2003, pp. 810-817, vol. 11, No. 7.
Mao Ye, Bin Wang, Masaru Uchida, Satoshi Yanase, Shingo Takahashi, Maki Yamaguchi and Susumu Sato, Low-Voltage-Driving Liquid Crystal Lens, Japanese Journal of Applied Physics, Oct. 10, 2010, pp. 1-3, vol. 49.
I.R.Guralnik, V.N. Belopukhov, G.D.Love and A.F.Naumov, Interdependence of the Electrical and Optical Properties of Liquid Crystals for Phase Modulation Applications, Journal of Applied Physics, May 1, 2000, pp. 4069-4074, vol. 87, No. 9.
A.F.Naumov, M.Yu Loktev, I.R.Guralnik and G.Vdovin, Liquid-Crystal Adaptive Lenses with Modal Control, Optics Letters, pp. 992-994, Jul. 1, 1998, vol. 23, No. 13, Optical Society of America.
M.Ye, B.Wang and S.Sato, Realization of Liquid Crystal Lens of Large Aperture and Low Driving Voltages Using Thin Layer of Weakly Conductive Material, Optics Express, pp. 4302-4308, Mar. 17, 2008, vol. 16, No. 6, Optical Society of America.
Mao Ye, Bin Wang, Maki Yamaguchi and Susumu Sato, Reducing Driving Voltages for Liquid Crystal Lens Using Weakly Conductive Thin Film, Japanese Journal of Applied Physics, pp. 4597-4599, Jun. 13, 2008, vol. 47, No. 6, 2008.
Asatryan Karen
Bagramyan Aram
Galstian Tigran
Presniakov Vladimir
Tork Amir
Arent & Fox LLP
LensVector Inc.
Rude Timothy L
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