Liquid crystal cells – elements and systems – Liquid crystal optical element
Reexamination Certificate
2005-03-14
2008-10-21
Font, Frank G (Department: 2883)
Liquid crystal cells, elements and systems
Liquid crystal optical element
C349S015000, C349S200000, C359S490020, C359S490020, C359S665000
Reexamination Certificate
active
07440075
ABSTRACT:
The invention relates to an optical system comprising a fluid chamber1and a birefringent part. The fluid chamber comprises first and second fluids10, 12having different indices of refraction, the interface between the fluids forming a meniscus14. The birefringent part is capable of varying characteristics of a first radiation beam3band a second radiation beam3c, the first and second radiation beams having different polarisations. Variation in the configuration of the meniscus causes variation in the characteristics of the first radiation beam and the second radiation beam. Variation in the configuration of the meniscus may be controlled by electrowetting.
REFERENCES:
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patent: WO 03/071335 (2003-08-01), None
patent: WO03071335 (2003-08-01), None
patent: WO2004027490 (2004-04-01), None
patent: WO2004027490 (2004-04-01), None
patent: WO2005093489 (2005-10-01), None
“DVD Pick-Up System Reads Two Layers Simultaneously”; Optics and Lasers Europe, Sep. 2000.
Hendriks Bernardus Hendrikus Wilhelmus
Kuiper Stein
Liedenbaum Coen Theodorus Hubertus Fransiscus
Stallinga Sjoerd
Belk Michael E.
Font Frank G
Koninklijke Philips Electronics , N.V.
Mooney Michael P
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