Optical: systems and elements – Optical modulator – Light wave temporal modulation
Reexamination Certificate
2007-09-04
2007-09-04
Dang, Hung (Department: 2873)
Optical: systems and elements
Optical modulator
Light wave temporal modulation
C359S315000, C359S244000
Reexamination Certificate
active
10531080
ABSTRACT:
A method of controlling the switching of an optically addressable spatial light modulator (OASLM), to a first surface of which a write light signal is applied and to a second surface of which a read light signal is applied. The method comprises applying a bipolar switching waveform to control electrodes of the (OASLM) during each write cycle such that the leading pulse of the waveform applies a voltage across the (OASLM) which is in the photosensitive direction and the trailing pulse applies a voltage which is not in the photosensitive direction.
REFERENCES:
patent: 5130830 (1992-07-01), Fukushima et al.
patent: 5555115 (1996-09-01), Mitsuoka et al.
patent: 5617203 (1997-04-01), Kobayashi et al.
patent: 5912758 (1999-06-01), Knipe et al.
patent: 0 525 424 (1993-02-01), None
patent: 2 269 238 (1994-02-01), None
patent: 5027256 (1993-02-01), None
Fukushima, et al. “Ferroelectric liquid-crystal spatial light modulator achieving biopolar image operation and cascadability”, Applied Optics,pp. 6859-6868 (1992).
Yim et al., “Comparison of operation parameters between binary and analogue switching pixellated light valves”, IEEE, pp. 236-242 (1998).
Perennes et al., “Optimization of ferroelectric liquid crystal optically addressed spatial light modulator performance”, Opt. Eng., pp. 2294-2301 (1997).
Moddel, “Ferroelectric liquid crystal spatial light modulators”, Spatial Light Modulator Technology: materials, devices and applicaitons, pp. 287-360 (1995).
Brown Carl Vernon
Coomber Stuart David
Hughes Jonathan Rennie
Topping Alexander John
Dang Hung
Marger & Johnson & McCollom, P.C.
Martinez Joseph
Qinetiq Limited
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