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公开(公告)号：US08260024B2
公开(公告)日：2012-09-04
申请号：US13356131
申请日：2012-01-23
申请人： Stephen W Farrer , James Copland , Thomas D Raymond , Wei Xiong
发明人： Stephen W Farrer , James Copland , Thomas D Raymond , Wei Xiong
IPC分类号： G06K9/00
CPC分类号： G01B11/2513 , A61B3/107 , G01M11/005 , G01M11/025 , G01M11/0264
摘要： A system for determining a surface shape of a test object includes a pattern having a plurality of first elements dispose about a central axis and defining an aperture containing the central axis. The first elements includes a plurality of common elements having a common form and a reference element having a reference form that is different than the common form. The system further comprises a detector array and an optical system. The optical system is adapted to provide an image of the first elements when light reflects off a surface of a test object, passes through the aperture, and is received by the detector array. The reference form may be configured to facilitate an association between the common elements and the spot images of the common elements.
摘要翻译： 用于确定测试对象的表面形状的系统包括具有围绕中心轴布置并且限定包含中心轴线的孔的多个第一元件的图案。 第一元件包括具有共同形式的多个公共元件和具有不同于通用形式的参考形式的参考元件。 该系统还包括检测器阵列和光学系统。 当光从测试对象的表面反射出来时，该光学系统适于提供第一元件的图像，通过该孔并由检测器阵列接收。 参考表格可以被配置为便于公共元素与公共元素的斑点图像之间的关联。
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2.发明申请公开(公告)号：US20100123873A1
公开(公告)日：2010-05-20
申请号：US12607368
申请日：2009-10-28
CPC分类号： G01B11/2513 , A61B3/1015 , A61B3/107 , G01M11/0264
摘要： A method of determining a wavefront of a received light beam includes: (a) receiving a light beam; (b) producing a group of light spots from the light beam; (c) qualifying a set of the light spots for use in determining a wavefront of the received light beam; and (d) determining the wavefront of the received light beam using the qualified set of light spots. Qualifying the set of light spots includes, for each light spot: calculating a first calculated location of the light spot using a first calculation algorithm; calculating a second calculated location of the light spot using a second calculation algorithm; and when a difference between the first and second calculated locations for the light spot is greater than an agreement threshold, excluding the light spot from the set of light spots and/or from being employed in determining the wavefront of the received light beam.
摘要翻译： 确定接收光束的波前的方法包括：（a）接收光束; （b）从光束产生一组光斑; （c）限定用于确定所接收的光束的波前的一组光点; 和（d）使用合格的一组光斑确定接收光束的波前。 对于每个光点，对该组光点进行合格包括：使用第一计算算法计算光点的第一计算位置; 使用第二计算算法计算所述光点的第二计算位置; 并且当光点的第一和第二计算位置之间的差值大于协议阈值时，排除来自该组光点的光斑和/或不用于确定接收光束的波前。
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公开(公告)号：US20120113391A1
公开(公告)日：2012-05-10
申请号：US13356131
申请日：2012-01-23
申请人： Stephen W. Farrer , James Copland , Thomas D. Raymond , Wei Xiong
发明人： Stephen W. Farrer , James Copland , Thomas D. Raymond , Wei Xiong
IPC分类号： A61B3/107
CPC分类号： G01B11/2513 , A61B3/107 , G01M11/005 , G01M11/025 , G01M11/0264
摘要： A system for determining a surface shape of a test object includes a pattern having a plurality of first elements dispose about a central axis and defining an aperture containing the central axis. The first elements includes a plurality of common elements having a common form and a reference element having a reference form that is different than the common form. The system further comprises a detector array and an optical system. The optical system is adapted to provide an image of the first elements when light reflects off a surface of a test object, passes through the aperture, and is received by the detector array. The reference form may be configured to facilitate an association between the common elements and the spot images of the common elements.
摘要翻译： 用于确定测试对象的表面形状的系统包括具有围绕中心轴布置并且限定包含中心轴线的孔的多个第一元件的图案。 第一元件包括具有共同形式的多个公共元件和具有不同于通用形式的参考形式的参考元件。 该系统还包括检测器阵列和光学系统。 当光从测试对象的表面反射出来时，该光学系统适于提供第一元件的图像，通过该孔并由检测器阵列接收。 参考表格可以被配置为便于公共元素与公共元素的斑点图像之间的关联。
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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。
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公开(公告)号：US20090002631A1
公开(公告)日：2009-01-01
申请号：US11769054
申请日：2007-06-27
摘要： A system measures a corneal topography of an eye. The system includes a group of first light sources arranged around a central axis, the group being separated from the axis by a radial distance defining an aperture in the group; a plurality of second light sources; a detector array; and an optical system adapted to provide light from the second light sources through the aperture to a cornea of an eye, and to provide images of the first light sources and images of the second light sources from the cornea, through the aperture, to the detector array. The optical system includes an optical element having a focal length, f. The second light sources are disposed to be in an optical path approximately one focal length, f, away from the optical element.
摘要翻译： 系统测量眼睛的角膜地形。 该系统包括围绕中心轴布置的一组第一光源，该组与该轴线分开限定该组中的孔的径向距离; 多个第二光源; 检测器阵列; 以及光学系统，其适于将来自所述第二光源的光通过所述孔提供给眼睛的角膜，并且提供所述第一光源和所述第二光源的图像从所述角膜通过所述孔到所述检测器的图像 数组。 光学系统包括具有焦距f的光学元件。 第二光源设置成离光学元件大约一个焦距f的光路。
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公开(公告)号：US20240215822A1
公开(公告)日：2024-07-04
申请号：US18401475
申请日：2023-12-30
CPC分类号： A61B3/113 , A61B3/0008 , A61B3/0025 , A61B3/0041 , A61B3/102 , A61B3/103 , A61B3/12 , A61B3/135 , A61B3/16 , G16H40/67
摘要： An eye measurement system includes an optical system. The eye measurement system is disposed in a housing which includes an aperture for providing light to and from the optical system and a subject's eye while the subject is separated and spaced apart from the housing, and the eye is not maintained in a fixed positional relationship with respect to the housing. An optical system movement arrangement moves the optical system. An automatic eye tracking arrangement ascertains a current positional relationship of the eye with respect to the optical system without human assistance, and in response thereto controls the optical system movement arrangement to move the optical system into a predetermined positional relationship with respect to the eye, for measurement of the eye, without human assistance. The eye measurement system can make objective, and/or subjective, refraction measurements of the eye.
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公开(公告)号：US11857259B2
公开(公告)日：2024-01-02
申请号：US17715457
申请日：2022-04-07
CPC分类号： A61B3/113 , A61B3/0008 , A61B3/0025 , A61B3/0041 , A61B3/102 , A61B3/103 , A61B3/12 , A61B3/135 , A61B3/16 , G16H40/67
摘要： An eye measurement system includes an optical system. The eye measurement system is disposed in a housing which includes an aperture for providing light to and from the optical system and a subject's eye while the subject is separated and spaced apart from the housing, and the eye is not maintained in a fixed positional relationship with respect to the housing. An optical system movement arrangement moves the optical system. An automatic eye tracking arrangement ascertains a current positional relationship of the eye with respect to the optical system without human assistance, and in response thereto controls the optical system movement arrangement to move the optical system into a predetermined positional relationship with respect to the eye, for measurement of the eye, without human assistance. The eye measurement system can make objective, and/or subjective, refraction measurements of the eye.
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公开(公告)号：US11324400B2
公开(公告)日：2022-05-10
申请号：US17321409
申请日：2021-05-15
摘要： An eye measurement system includes an optical system. The eye measurement system is disposed in a housing which includes an aperture for providing light to and from the optical system and a subject's eye while the subject is separated and spaced apart from the housing, and the eye is not maintained in a fixed positional relationship with respect to the housing. An optical system movement arrangement moves the optical system. An automatic eye tracking arrangement ascertains a current positional relationship of the eye with respect to the optical system without human assistance, and in response thereto controls the optical system movement arrangement to move the optical system into a predetermined positional relationship with respect to the eye, for measurement of the eye, without human assistance. The eye measurement system can make objective, and/or subjective, refraction measurements of the eye.
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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。
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公开(公告)号：US08126246B2
公开(公告)日：2012-02-28
申请号：US12350895
申请日：2009-01-08
申请人： Stephen W. Farrer , James Copland , Thomas D. Raymond , Wei Xiong
发明人： Stephen W. Farrer , James Copland , Thomas D. Raymond , Wei Xiong
IPC分类号： G06K9/00
CPC分类号： G01B11/2513 , A61B3/107 , G01M11/005 , G01M11/025 , G01M11/0264
摘要： A system for determining a surface shape of a test object includes a pattern having a plurality of first elements dispose about a central axis and defining an aperture containing the central axis. The first elements includes a plurality of common elements having a common form and a reference element having a reference form that is different than the common form. The system further comprises a detector array and an optical system. The optical system is adapted to provide an image of the first elements when light reflects off a surface of a test object, passes through the aperture, and is received by the detector array. The reference form may be configured to facilitate an association between the common elements and the spot images of the common elements.
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