公开(公告)号：US07440108B2

公开(公告)日：2008-10-21

申请号：US10518418

申请日：2003-06-19

申请人： John Edward Perrigo Beale ,  Andrew Robert Harvey ,  David William Fletcher-Holmes

发明人： John Edward Perrigo Beale ,  Andrew Robert Harvey ,  David William Fletcher-Holmes

IPC分类号： G01B9/02

CPC分类号： G01J3/4537 ,  G01J3/0205 ,  G01J3/2823

摘要： The present invention relates to an imaging apparatus and comprises input and output polarisers, a first polarising beam splitter and at least one additional polarising beam splitter, a light sensitive detector and focussing means arranged on an axis. The input polariser resolves incident light into a single linear polarisation state. The first polarising beam splitter receives light from the input polarises, and resolves it into equal magnitude orthogonally polarised rays which are mutually spaced and have a path difference therebetween. The or each additional polarising beam splitter is arranged to receive light from the first polarising beam splitter. The transmission axis of the output polariser is parallel to or perpendicular to the transmission axis of the input polarises to resolve the orthogonally polarised light rays having past through the or each additional polarising beam splitter into the same or perpendicular polarisation state as light resolved by the, first polariser. The first polarising beam splitter, the or each additional polarising beam splitter and the focussing means are mutually spaced such that said mutually spaced rays are brought to coincidence whereby interference fringes are produced, the detector being arranged to detect the interference fringes. One beam splitter is mounted for movement perpendicular to said axis, whereas the other beam splitter(s) is/are rigidly mounted against movement.

摘要翻译： 本发明涉及一种成像装置，包括输入和输出偏振器，第一偏振分束器和至少一个附加的偏振分束器，光敏检测器和布置在轴上的聚焦装置。 输入偏振器将入射光分解为单线性偏振状态。 第一偏振分束器从输入偏振器接收光，并将其分解成相等的正交偏振光线，它们彼此间隔开并且在它们之间具有路径差。 该或每个附加的偏振分束器布置成接收来自第一偏振分束器的光。 输出偏振器的透射轴平行于或垂直于输入偏振器的透射轴，以将已经通过该或每个附加的偏振光束分离器的正交偏振光束解析为与由该光束分辨的光分解的相同或垂直的偏振状态， 第一个偏振器 第一偏振分束器，或每个附加的偏振分束器和聚焦装置相互间隔开，使得所述相互间隔的射线变得一致，从而产生干涉条纹，检测器被布置成检测干涉条纹。 一个分束器安装成垂直于所述轴线移动，而另一个分束器被刚性地安装成抵抗运动。

公开(公告)号：US20050237532A1

公开(公告)日：2005-10-27

申请号：US10518418

申请日：2003-06-19

申请人： John Edward Perrigo Beale ,  Andrew Harvey ,  David Fletcher-Holmes

发明人： John Edward Perrigo Beale ,  Andrew Harvey ,  David Fletcher-Holmes

IPC分类号： G01J3/28 ,  G01J3/453 ,  G01B9/02

CPC分类号： G01J3/4537 ,  G01J3/0205 ,  G01J3/2823

摘要： The present invention relates to an imaging apparatus and comprises input and output polarisers, a first polarising beam splitter and at least one additional polarising beam splitter, a light sensitive detector and focussing means arranged on an axis. The input polariser resolves incident light into a single linear polarisation state. The first polarising beam splitter receives light from the input polarises, and resolves it into equal magnitude orthogonally polarised rays which are mutually spaced and have a path difference therebetween. The or each additional polarising beam splitter is arranged to receive light from the first polarising beam splitter. The transmission axis of the output polariser is parallel to or perpendicular to the transmission axis of the input polarises to resolve the orthogonally polarised light rays having past through the or each additional polarising beam splitter into the same or perpendicular polarisation state as light resolved by the, first polariser. The first polarising beam splitter, the or each additional polarising beam splitter and the focussing means are mutually spaced such that said mutually spaced rays are brought to coincidence whereby interference fringes are produced, the detector being arranged to detect the interference fringes. One beam splitter is mounted for movement perpendicular to said axis, whereas the other beam splitter(s) is/are rigidly mounted against movement.

摘要翻译： 本发明涉及一种成像装置，包括输入和输出偏振器，第一偏振分束器和至少一个附加偏振分束器，光敏检测器和布置在轴上的聚焦装置。 输入偏振器将入射光分解为单线性偏振状态。 第一偏振分束器从输入偏振器接收光，并将其分解成相等的正交偏振光线，它们彼此间隔开并且在它们之间具有路径差。 该或每个附加的偏振分束器布置成接收来自第一偏振分束器的光。 输出偏振器的透射轴平行于或垂直于输入偏振器的透射轴，以将已经通过该或每个附加的偏振光束分离器的正交偏振光束解析为与由该光束分辨的光分解的相同或垂直的偏振状态， 第一个偏振器 第一偏振分束器，或每个附加的偏振分束器和聚焦装置相互间隔开，使得所述相互间隔的射线变得一致，从而产生干涉条纹，检测器被布置成检测干涉条纹。 一个分束器安装成垂直于所述轴线移动，而另一个分束器被刚性地安装成抵抗运动。