Switchable lens

Details Switchable lens Switchable lens

2011-08-23

2011-08-23

Nelms, David (Department: 2871)

Liquid crystal cells, elements and systems

Liquid crystal system

Stereoscopic

C349S095000, C349S096000, C349S132000, C349S179000, C349S200000

Reexamination Certificate

active

08004621

ABSTRACT:
A display apparatus has a switchable birefringent lens array. The display apparatus produces a substantially linearly polarised output. The lens array comprises birefringent material arranged between a planar surface of a first substrate and a relief substrate of a second substrate defining an array of cylindrical lenses. The lens array has electrodes for applying a control voltage across the birefringent material for electrically switching the birefringent material between a first mode and a second mode. In the first mode the lens array modifies the directional distribution of incident light polarised in a predetermined direction. In the second mode the lens array has substantially no effect on incident light polarised in said predetermined direction.

REFERENCES:
patent: 4959641 (1990-09-01), Bass et al.
patent: 5144462 (1992-09-01), Otsuka et al.
patent: 5504597 (1996-04-01), Sprague et al.
patent: 5930044 (1999-07-01), Schleipen
patent: 6069650 (2000-05-01), Battersby
patent: 6288767 (2001-09-01), Murata et al.
patent: 6590605 (2003-07-01), Eichenlaub
patent: 2007/0008617 (2007-01-01), Shestak et al.
patent: 0645661 (1995-03-01), None
patent: 0721131 (1996-07-01), None
patent: 0829743 (1998-03-01), None
patent: 0829744 (1998-03-01), None
patent: 0833183 (1998-04-01), None
patent: 62-237435 (1987-10-01), None
patent: 2-46423 (1990-02-01), None
patent: 2063005 (1990-03-01), None
patent: 5-34656 (1993-02-01), None
patent: 05-249564 (1993-09-01), None
patent: 6-118416 (1994-04-01), None
patent: 08149494 (1996-06-01), None
patent: 9-203980 (1997-08-01), None
patent: 9-258271 (1997-10-01), None
patent: 2000-503424 (2000-03-01), None
patent: WO 98/21620 (1998-05-01), None
patent: WO 03/015424 (2003-02-01), None
patent: WO 03/053071 (2003-06-01), None
English language translation of abstract and pertinent parts of JP 62-237435 (published Oct. 17, 1987).
English language translation of abstract and pertinent parts of JP 2-46423 (published Feb. 15, 1990).
English language translation of abstract of JP 5-34656 (published Feb. 12, 1993).
English language translation of abstract of JP 6-118416 (published Apr. 28, 1994).
English language translation of abstract of JP 2000-503424 (published Mar. 21, 2000).
English language translation of abstract of JP 9-203980 (published Aug. 5, 1997).
English language translation of abstract of JP 9-258271 (published Oct. 3, 1997).
English language translation of abstract and pertinent parts of JP 05-249564 (Published Sep. 28, 1993).
Suyama, et al.; “3-D Display System with Dual-Frequency Liquid-Crystal Varifocal Lens,” SID 97 Digest, pp. 273-2763.
Eichenlaub; “Developments in Autostereoscopic Technology at Dimension Technologies Inc.,” SPIE vol. 1915 Stereoscopic Displays and Applications IV, 1993, pp. 177-186.
Commander, et al.; “Electrode Designs for Tunable Microlenses;” Microlens Arrays, EOS Topical Meeting, May 1997, National Physical Laboratories, pp. 48-53.
Okoshi; “Three Dimensional Imaging Techniques;” Academic Press, 1976.
Van Berkel, et al.; “Multiview 3D-LCD;” Proc. SPIE, vol. 2653, 1996, pp. 32-39.
Bryan-Brown, et al.; “Grating Aligned Bistable Nematic Device;” SID 97 Digest, 1997, pp. 37-40.
Contoret, et al.; “Polarized Electroluminescence from an Anisotropic Nematic Network on a Non-Contact Photoalignment Layer;” Advanced Materials, vol. 12, No. 13, Jul. 5, 2000, pp. 971-974.
English language translation of abstract of JP 08149494 (published Jun. 7, 1996).

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