Optical waveguides – With optical coupler – Switch
Reexamination Certificate
2006-06-06
2006-06-06
Healy, Brian M. (Department: 2883)
Optical waveguides
With optical coupler
Switch
C385S015000, C385S011000, C385S014000, C385S129000, C385S130000, C385S033000, C385S901000, C349S017000, C349S018000, C349S041000, C349S057000, C349S062000, C359S464000, C359S465000, C359S015000, C359S023000, C353S007000, C353S008000
Reexamination Certificate
active
07058252
ABSTRACT:
A light direction switching apparatus and method is described. The light direction switching apparatus comprises a passive birefringent lens (138), e.g. a birefringent lenticular screen, and a switchable polariser (146). By switching the polariser (146), different directional distributions of output light are provided. The light direction switching apparatus may be used with or incorporated in a display device, such as a liquid crystal display device, to provide a display device switchable between a two dimensional mode and an autostereoscopic three dimensional mode, or to provide a multi-user display device where different images are displayed to different viewers. The light direction switching apparatus may also be used to provide switchable brightness enhancement of reflective or transflective display devices. The light direction switching apparatus may also be used to provide a fiber-optic switching apparatus. The switchable polariser may be mechanically switchable or electrically switchable.
REFERENCES:
patent: 2788707 (1957-04-01), Land
patent: 3520592 (1970-07-01), Leib et al.
patent: 3536921 (1970-10-01), Caulfield
patent: 4717949 (1988-01-01), Eichenlaub
patent: 4959641 (1990-09-01), Bass et al.
patent: 5175651 (1992-12-01), Marron et al.
patent: 5493427 (1996-02-01), Nomura et al.
patent: 5500765 (1996-03-01), Eichenlaub
patent: 5592332 (1997-01-01), Nishio et al.
patent: 5691788 (1997-11-01), Kim
patent: 5956001 (1999-09-01), Sumida et al.
patent: 6046787 (2000-04-01), Nishiguchi
patent: 6069650 (2000-05-01), Battersby
patent: 6116739 (2000-09-01), Ishihara et al.
patent: 6157424 (2000-12-01), Eichenlaub
patent: 6304381 (2001-10-01), Hayashi
patent: 2001/0002165 (2001-05-01), Shinohara et al.
patent: 2004/0196253 (2004-10-01), Eichenlaub
patent: 2004/0222945 (2004-11-01), Taira et al.
patent: 2004/0240777 (2004-12-01), Woodgate et al.
patent: 2005/0111100 (2005-05-01), Mather et al.
patent: 2 171 535 (1986-08-01), None
patent: 2171535 (1986-01-01), None
patent: 03-292092 (1990-04-01), None
patent: 11-271744 (1997-07-01), None
patent: 0785457 (1997-07-01), None
patent: 0829743 (1998-03-01), None
patent: 0829744 (1998-03-01), None
patent: 2354899 (1999-10-01), None
patent: 1118883 (2001-07-01), None
patent: 0721131 (2003-04-01), None
patent: 0833183 (2004-06-01), None
patent: 0860728 (2004-06-01), None
patent: WO 98/21620 (1998-05-01), None
Commander, LG, et al. M, 1.7 Electrode designs for tunable microlenses, Microlens Arrays, EOS Topical Meeting, National Physical Laboratory, 1997, pp. 48-53.
Eichenlaub, Jesse B., Developments in Autostereoscopic Technology at Dimension Technologies Inc., SPIE, Stereoscopic Displays and Applications IV, 1993, pp. 177-186, vol. 1915.
Hamada, H., et al., P3.6-1 A New High Definition Microlens Array Built in p-SI TFT-LCD Panel, ASIA Display, 1995, pp. 887-890.
Hamagishi, G., et al., 32.1: Invited Paper : A Display System with 2-D/3-D Compatibility, SID, 1998.
History of Three-Dimensional Imaging Techniques, pp. 12, 14, 20.
Huang, Yi-Pai, et al., 26.3: Multidirectional Asymmetrical Microlens-Array Light Control Firms for High Performance Reflective Liquid Crystal Displays, SID 02 Digest, 2002, pp. 1-4.
ITOH, Yasuhisa, et al., 16.2: Influence of rough surface upon optical characteristics of reflective LCD with a polarizer, SID, 1998.
Leuzinger, Andrew, Liquid-crystal technology implementation for optical switching, ICD - Fiber Optics, Electronics Design Magazine, 2001, pp. 1-4.
Nakayama, E., et al., 2-D/3-D Compatible LC Display without Special Glasses, Proceedings of Third International Displays Workshops, 1996, pp. 453-456, vol. 2.
Pancharatnam, S., Archromatic Combinations of Birefringent Plates, Part 1. An Achromatic Circular Polarizer, Memoir No. 71 of the Raman Research Institute, Bangalore, 1955, pp. 130-136.
Pitcher Graham, Making a display - A Dera spin off is creating lightweight, low power displays, New Electronics, 2000, pp. 71-72.
Suyama, S., et al., 17:4:3-D Display System with Dual-Frequency Liquid-Crystal Varifocal Lens, SID 97 Digest, 1997, pp. 273-276.
Traut, S., Holographically recorded gratings on microienses for a minaturized spectrometer array, Optical Engineering, 2000, pp. 290-298, vol. 39, No. 1.
Trout, T. John, 15.3: Invited Paper: Volume Holographic Components for Display Applications, SID 00 Digest, 2000, pp. 202-205.
Turkatte, Cindana A., et al., Passive Component Technologies for WDM Networks, Fibre Optic Product News, 2000.
Valliath, G. T., Design of Hologram for Brightness Enhancement in Color LCDs, SID, 1998.
Woodgate, Graham J., et al., Flat panel autostereoscopic displays - characterisation and enhancement, SPIE, Steroscopic Displays and Virtual Reality Systems VIII, 2000, pp. 153-164, vol. 3957.
Harrold Jonathan
Woodgate Graham John
Foley & Lardner LLP
Healy Brian M.
Ocuity Limited
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