Title:
NOVEL GRATING
Document Type and Number:
WIPO Patent Application WO2001069718
Kind Code:
A8
Abstract:
A grating comprising a plurality of substantially parallel members having a conducting surface of depth L, separated by a dielectric layer gap, and having of pitch lambda g and where L>16 lambda g. The members are preferably metallic or comprise metallic foil covered plastic. The gap may be filled wholly or partially with dielectric material including liquid crystal whose refractive index can be controlled by suitable application of voltage across the gap.
Inventors:
SAMBLES JOHN ROY (GB)
LAWRENCE CHRISTOPHER ROBERT (GB)
LAWRENCE CHRISTOPHER ROBERT (GB)
Application Number:
PCT/GB2001/000976
Publication Date:
January 03, 2002
Filing Date:
March 07, 2001
Export Citation:
Assignee:
QINETIQ LTD (GB)
SAMBLES JOHN ROY (GB)
LAWRENCE CHRISTOPHER ROBERT (GB)
SAMBLES JOHN ROY (GB)
LAWRENCE CHRISTOPHER ROBERT (GB)
International Classes:
H01Q1/42; H01Q3/44; H01Q15/00; H01Q15/14; H01Q17/00; (IPC1-7): H01Q1/42; H01Q3/44; H01Q17/00
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