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公开(公告)号：EP2171526B1
公开(公告)日：2015-10-07
申请号：EP08794407.0
申请日：2008-07-03
发明人： KOKONASKI, William , HADDOCK, Joshua, N. , CLARKE, Roger , SHUPNICK, Mark-Mattison , BLUM, Ronald, D.
CPC分类号： G02C7/06 , G02B5/1895 , G02C7/061 , G02C7/083 , G02C2202/20
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公开(公告)号：EP2111563B8
公开(公告)日：2018-05-16
申请号：EP08728084.8
申请日：2008-01-22
CPC分类号： G02F1/1313 , G02C7/083 , G02C2202/20 , G02C2202/22 , G02F1/13718 , G02F1/29
摘要： Embodiments of the present invention relate to a cholesteric liquid crystalline material which may be usable in an electro-active element for providing fail safe operation, polarization insensitivity, low electrical power consumption requirements, and a small number of electrical connections. The cholesteric liquid crystalline material may be usable in an electro-active element for providing a diffractive efficiency or focusing efficiency above 90% in an activated state of the electro-active element and a diffractive efficiency or focusing efficiency below 10% in a deactivated state of the electro-active element.
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3.发明公开FAIL-SAFE ELECTRO-ACTIVE LENSES AND METHODOLOGY FOR CHOOSING OPTICAL MATERIALS FOR FAIL-SAFE ELECTRO-ACTIVE LENSES 审中-公开电活性FAIL-SAFE镜片和方法选择光材料电活性FAIL-SAFE镜片
公开(公告)号：EP2883105A2
公开(公告)日：2015-06-17
申请号：EP13828417.9
申请日：2013-08-09
发明人： CLARKE, Roger , HADDOCK, Joshua, N.
IPC分类号： G02C7/06
CPC分类号： G02C7/083 , G02C2202/20 , G02F1/1313 , G02F1/13718 , G02F1/29
摘要： A fail-safe electro-active lens is presented in which the lens includes a substrate having a diffractive relief surface and an electro-active material in optical communication with the substrate. The electro-active material can include a nematic liquid crystal host. The refractive index of the susbstrate is equal to the average refractive index of the liquid crystal at a wavelength in the blue light spectrum.
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公开(公告)号：EP2111563B1
公开(公告)日：2017-12-20
申请号：EP08728084.8
申请日：2008-01-22
CPC分类号： G02F1/1313 , G02C7/083 , G02C2202/20 , G02C2202/22 , G02F1/13718 , G02F1/29
摘要： Embodiments of the present invention relate to a cholesteric liquid crystalline material which may be usable in an electro-active element for providing fail safe operation, polarization insensitivity, low electrical power consumption requirements, and a small number of electrical connections. The cholesteric liquid crystalline material may be usable in an electro-active element for providing a diffractive efficiency or focusing efficiency above 90% in an activated state of the electro-active element and a diffractive efficiency or focusing efficiency below 10% in a deactivated state of the electro-active element.
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