-
公开(公告)号：US06301420B1
公开(公告)日：2001-10-09
申请号：US09070747
申请日：1998-05-01
IPC分类号： G02B602
CPC分类号： G02B6/02338 , C03B37/01205 , C03B2203/14 , C03B2203/34 , C03B2203/42 , G02B6/02042 , G02B6/021 , G02B6/02347 , G02B6/02385
摘要： An optical fiber for transmitting radiation comprising two or more core regions, two or more core regions, each core region comprising a substantially transparent core material and having a core refractive index, a core length, and a core diameter, wherein said core regions are arranged within a cladding region, said cladding region comprising a length of first substantially transparent cladding material, having a first refractive index, wherein said first substantially transparent cladding material has an array of lengths of a second cladding material embedded along its length, wherein the second cladding material has a second refractive index which is less than said first refractive index, such that radiation input to said fiber propagates along at least one of said core regions. The cladding region and the core regions may be arranged such that radiation input to said optical fiber propagates along one or more said lengths of said core regions in a single mode of propagation. The optical fiber may be used as a bend sensor, a spectral filter or a directional coupler. The invention also relates to a method of manufacturing a multicore optical fiber.
摘要翻译： 一种用于透射辐射的光纤，包括两个或更多个芯区域，两个或更多个芯区域，每个芯区域包括基本上透明的芯材料并且具有芯折射率，芯长度和芯直径，其中所述芯区域布置 在包层区域内，所述包层区域包括具有第一折射率的第一基本上透明的包层材料的长度，其中所述第一基本上透明的包层材料具有沿其长度嵌入的第二包层材料的长度阵列，其中所述第二包层 材料具有小于所述第一折射率的第二折射率，使得输入到所述纤维的辐射沿着所述芯区域中的至少一个传播。 包层区域和核心区域可以被布置成使得输入到所述光纤的辐射在单个传播模式中沿着一个或多个所述核心区域的长度传播。 光纤可以用作弯曲传感器，光谱滤波器或定向耦合器。 本发明还涉及一种制造多芯光纤的方法。
-
公开(公告)号：US20120293769A1
公开(公告)日：2012-11-22
申请号：US13299466
申请日：2011-11-18
申请人： Thomas D. Raymond , Paul Pulaski , Stephen W. Farrer , Daniel R. Neal , Alan H. Greenaway , David M. Faichnie , Heather I. Campbell Dalgarno , Graham N. Craik
发明人： Thomas D. Raymond , Paul Pulaski , Stephen W. Farrer , Daniel R. Neal , Alan H. Greenaway , David M. Faichnie , Heather I. Campbell Dalgarno , Graham N. Craik
CPC分类号： G01M11/0292 , A61B3/1015 , G01J9/00
摘要： A phase diversity wavefront sensor includes an optical system including at least one optical element for receiving a light beam; a diffractive optical element having a diffractive pattern defining a filter function, the diffractive optical element being arranged to produce, in conjunction with the optical system, images from the light beam associated with at least two diffraction orders; and a detector for detecting the images and outputting image data corresponding to the detected images. In one embodiment, the optical system, diffractive optical element, and detector are arranged to provide telecentric, pupil plane images of the light beam. A processor receives the image data from the detector, and executes a Gerchberg-Saxton phase retrieval algorithm to measure the wavefront of the light beam.
摘要翻译： 相位分集波前传感器包括光学系统，该光学系统包括用于接收光束的至少一个光学元件; 具有限定滤光器功能的衍射图案的衍射光学元件，所述衍射光学元件布置成与所述光学系统结合产生与至少两个衍射级相关联的光束的图像; 以及用于检测图像并输出与检测到的图像相对应的图像数据的检测器。 在一个实施例中，光学系统，衍射光学元件和检测器被布置成提供光束的远心光瞳平面图像。 处理器从检测器接收图像数据，并且执行Gerchberg-Saxton相位检索算法来测量光束的波前。
-
公开(公告)号：US08118429B2
公开(公告)日：2012-02-21
申请号：US12259381
申请日：2008-10-28
申请人： Thomas D. Raymond , Paul Pulaski , Stephen W. Farrer , Daniel R. Neal , Alan H. Greenaway , David M. Faichnie , Heather I. Campbell Dalgarno , Graham N. Craik
发明人： Thomas D. Raymond , Paul Pulaski , Stephen W. Farrer , Daniel R. Neal , Alan H. Greenaway , David M. Faichnie , Heather I. Campbell Dalgarno , Graham N. Craik
CPC分类号： G01M11/0292 , A61B3/1015 , G01J9/00
摘要： A phase diversity wavefront sensor includes an optical system including at least one optical element for receiving a light beam; a diffractive optical element having a diffractive pattern defining a filter function, the diffractive optical element being arranged to produce, in conjunction with the optical system, images from the light beam associated with at least two diffraction orders; and a detector for detecting the images and outputting image data corresponding to the detected images. In one embodiment, the optical system, diffractive optical element, and detector are arranged to provide telecentric, pupil plane images of the light beam. A processor receives the image data from the detector, and executes a Gerchberg-Saxton phase retrieval algorithm to measure the wavefront of the light beam.
摘要翻译： 相位分集波前传感器包括光学系统，该光学系统包括用于接收光束的至少一个光学元件; 具有限定滤光器功能的衍射图案的衍射光学元件，所述衍射光学元件布置成与所述光学系统结合产生与至少两个衍射级相关联的光束的图像; 以及用于检测图像并输出与检测到的图像相对应的图像数据的检测器。 在一个实施例中，光学系统，衍射光学元件和检测器被布置成提供光束的远心光瞳平面图像。 处理器从检测器接收图像数据，并且执行Gerchberg-Saxton相位检索算法来测量光束的波前。
-
公开(公告)号：US06547406B1
公开(公告)日：2003-04-15
申请号：US09529671
申请日：2000-05-02
申请人： Alan H. Greenaway , Paul Harrison , Robin Dickson
发明人： Alan H. Greenaway , Paul Harrison , Robin Dickson
IPC分类号： G02B508
CPC分类号： G02B23/12 , G02B15/00 , G02B26/0825 , H04N5/33
摘要： An infra-red imaging system has two variable focal length optical components (6, 7) whose positions are fixed relative to one another. The system also comprises an image detector (8). Control means (13) is provided such that the focal length of one of the variable focal length optical components (7) can be varied in relation to the focal length of the other variable focal length optical component (6). The system can be used to produce an image of variable magnification while maintaining an in-focus image at the detector (8). The control means (13) may comprise a mechanical linkage, an electronic circuit, or a computer program. In an alternative embodiment the optical system is a beam expander. Controlling a focusing mirror can achieve a dither effect. Controlling a focusing mirror can also de-focus the image, giving a mean scene temperature evaluation.
摘要翻译： 红外成像系统具有两个相对于彼此固定位置的可变焦距光学部件（6,7）。 该系统还包括图像检测器（8）。 设置控制装置（13），使得可变焦距光学部件（7）之一的焦距可以相对于另一个可变焦距光学部件（6）的焦距变化。 该系统可用于产生可变放大图像，同时保持检测器（8）处的对焦图像。 控制装置（13）可以包括机械联动装置，电子电路或计算机程序。 在替代实施例中，光学系统是光束扩展器。 控制聚焦镜可以实现抖动效果。 控制聚焦镜还可以对图像进行对焦，给出平均场景温度评估。
-
-
-
搜索结果
4 条记录 (耗时 0.029 秒)
