发明公开
EP3011371A1 ELÉMENT DE FILTRAGE OPTIQUE ANGULAIRE POUR LE FILTRAGE ANGULAIRE À SÉLECTIVITÉ ANGULAIRE CONTRÔLÉE
有权
ANGLED光学滤波元件护角成形过滤与控制锥角聚能选择性
- 专利标题： ELÉMENT DE FILTRAGE OPTIQUE ANGULAIRE POUR LE FILTRAGE ANGULAIRE À SÉLECTIVITÉ ANGULAIRE CONTRÔLÉE
- 专利标题（英）： Angular optical filtering element for angular filtering having controlled angular selectivity
- 专利标题（中）： ANGLED光学滤波元件护角成形过滤与控制锥角聚能选择性
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申请号： EP14731258.1申请日： 2014-06-17
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公开(公告)号： EP3011371A1公开(公告)日： 2016-04-27
- 发明人: SAKAT, Emilie , HAÏDAR, Riad , PELOUARD, Jean-Luc , BOUCHON, Patrick , VINCENT, Grégory
- 申请人： Centre National de la Recherche Scientifique (CNRS) , Office National d'Etudes et de Recherches Aérospatiales
- 申请人地址： 3, rue Michel-Ange 75794 Paris Cedex 16 FR
- 专利权人： Centre National de la Recherche Scientifique (CNRS),Office National d'Etudes et de Recherches Aérospatiales
- 当前专利权人： Centre National de la Recherche Scientifique (CNRS),Office National d'Etudes et de Recherches Aérospatiales
- 当前专利权人地址： 3, rue Michel-Ange 75794 Paris Cedex 16 FR
- 代理机构： Osha Liang
- 优先权： FR1355653 20130617
- 国际公布： WO2014202636 20141224
- 主分类号： G02B5/00
- IPC分类号： G02B5/00 ; G02B5/18 ; G02B5/20
摘要：
According to one aspect, the invention relates to an angular optical filtering element (E
i ) optimised for angular filtering about a given operating angle of incidence (θ
i , φ
i ) in a given spectral band. The angular filtering element (E
i ) comprises a first nanostructured, band-pass, spectral filter (11
i , 301) and a second nanostructured, band-pass, spectral filter (12
i , 302). Each of the first and second spectral filters comprises, respectively, in said spectral band, a first and a second central filtering wavelength that respectively has a first and second angular dispersion curve defined depending on the angle of incidence (θ
inc ) on the optical filtering element (E
i ), the curves of angular dispersion being secant about the operating angle of incidence (θ
i , φ
i ) of the optical filtering element. The invention applies to the production of a selective angular filtering device and to a multidirectional optical detection system.
i ) optimised for angular filtering about a given operating angle of incidence (θ
i , φ
i ) in a given spectral band. The angular filtering element (E
i ) comprises a first nanostructured, band-pass, spectral filter (11
i , 301) and a second nanostructured, band-pass, spectral filter (12
i , 302). Each of the first and second spectral filters comprises, respectively, in said spectral band, a first and a second central filtering wavelength that respectively has a first and second angular dispersion curve defined depending on the angle of incidence (θ
inc ) on the optical filtering element (E
i ), the curves of angular dispersion being secant about the operating angle of incidence (θ
i , φ
i ) of the optical filtering element. The invention applies to the production of a selective angular filtering device and to a multidirectional optical detection system.
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