公开(公告)号：US4934370A

公开(公告)日：1990-06-19

申请号：US242448

申请日：1988-09-09

申请人： Charles E. Campbell

发明人： Charles E. Campbell

IPC分类号： A61B8/10

CPC分类号： A61B8/10

摘要： A prior art ultrasonic eye measuring device is fitted with pinhole optics. A fixation target is provided with the pinhole optics. The instrument is used to measure the dimension of the eye typically preparatory to cataract surgery. In use of the instrument, the patient has the cornea anesthetized. The patient is thereafter told to fixate on the spot of light leaking from the pinhole optics as the eye examiner brings the instrument into contact with the cornea of the eye. The point source of light approaches the eye. As it approaches, the point source increases in size. When the light source becomes sufficiently large, the fixation target becomes visible. Upon touching of the instrument to the eye, ultrasound measurement of the dimension of the eye preferably along the visual axis occurs. By the expedient of aligning the interrogating ultrasound axis to the line of sight of the fixation target, measurement of the visual axis length of the eye occurs. The appearance of the fixation target immediately before eye measurement minimizes undesired off axis measurement. In a preferred embodiment of the instrument, the conjugate image of a pinhole light source is relayed by optics through the lens of the eye. Consequently, the fixation target is not diffraction limited.

摘要翻译： 现有技术的超声波眼睛测量装置配有针孔光学器件。 固定目标设置有针孔光学器件。 该仪器用于测量通常准备白内障手术的眼睛的尺寸。 在使用仪器时，患者有角膜麻醉。 随后眼睛检查员将仪器与眼睛的角膜接触，患者随后被告知要固定在针孔光学器件漏出的光线上。 点光源接近眼睛。 随着点数越来越大，点源越来越大。 当光源变得足够大时，固定目标变得可见。 当将仪器接触眼睛时，优选地沿着视轴测量眼睛的尺寸。 通过将询问超声轴对准固定目标的视线的方式，发生眼睛的视轴长度的测量。 紧接在眼睛测量之前的固定目标的外观使不期望的离轴测量最小化。 在仪器的优选实施例中，针孔光源的共轭图像通过光学器件通过眼睛的透镜进行中继。 因此，固定目标不是衍射受限的。

公开(公告)号：US06871953B1

公开(公告)日：2005-03-29

申请号：US10675510

申请日：2003-09-29

申请人： Robert B. Mandell ,  Charles E. Campbell

发明人： Robert B. Mandell ,  Charles E. Campbell

IPC分类号： G02C7/04 ,  A61F2/16

CPC分类号： G02C7/048 ,  G02C7/042 ,  G02C7/043 ,  G02C7/045

摘要： A monocentric bifocal contact lens with upper and lower optical power zones is connected by a transition comprising a family of sigmoidal curves. The sigmoidal curve begins with a common tangent at the boundary of the near zone and, with a reversal of sign from the near zone curve, climbs with increasing positive slope to an inflection point, whereupon it continues to climb with decreasing positive slope until reaching the distance zone curve, with which it has a common tangent. There is no discontinuity in the first derivative of the curve throughout its length. A sigmoidal curve can be constructed from numerous mathematical functions, examples of which include polynomial, conic, transendental, or cumulative distribution curves.

摘要翻译： 具有上光功率区和下光功率区的单中心双焦隐形眼镜通过包括一系列S形曲线的转变来连接。 S形曲线从近区边界处的普通切线开始，并且随着近区曲线的符号反转，随着正斜率增加到拐点，随后以正斜率下降，直到达到 距离区曲线，它具有共同的切线。 曲线的一阶导数在整个长度上没有不连续性。 可以从许多数学函数构造S形曲线，其示例包括多项式，圆锥，Transendental或累积分布曲线。

公开(公告)号：US06593879B1

公开(公告)日：2003-07-15

申请号：US09928700

申请日：2001-08-09

申请人： Charles E. Campbell

发明人： Charles E. Campbell

IPC分类号： H04B7185

CPC分类号： G01S19/53

摘要： In the absence of a gyroscope, the attitude and attitude rate of a receiver can be determined using signals received by antennae on the receiver. Based on the signals received by the antennae, the Doppler difference between the signals is calculated. The Doppler difference may then be used to determine the attitude rate. With signals received from two signal sources by three antennae pairs, the three-dimensional attitude rate is determined.

摘要翻译： 在没有陀螺仪的情况下，可以使用接收机上的天线接收的信号来确定接收机的姿态和姿态速率。 基于天线接收的信号，计算信号之间的多普勒差。 然后可以使用多普勒差异来确定姿态速率。 通过三个天线对从两个信号源接收的信号，确定三维姿态速率。

公开(公告)号：US6082856A

公开(公告)日：2000-07-04

申请号：US188432

申请日：1998-11-09

申请人： Stephen A. Dunn ,  Charles E. Campbell

发明人： Stephen A. Dunn ,  Charles E. Campbell

IPC分类号： G02C7/04 ,  G06F17/50

CPC分类号： G02C7/028 ,  G02C7/04

摘要： A method for constructing a soft contact lens having a prescribed power correction for focusing light on the retina of an eye is described. The method provides a soft contact lens that, when in place ("flexed") on the wearer's eye, is designed and manufactured to provide a substantially ellipsoidal anterior surface. In the method, an eye model including a cornea, a crystalline lens and a retina is constructed. Then a shape for an anterior surface of the cornea is selected to be a conic section having an eccentricity in the range of about 0.14

公开(公告)号：US5521515A

公开(公告)日：1996-05-28

申请号：US394108

申请日：1995-02-17

申请人： Charles E. Campbell

发明人： Charles E. Campbell

IPC分类号： G01D5/24 ,  G01N27/22 ,  G01R27/26

CPC分类号： G01N27/221 ,  G01D5/2405

摘要： A capaciflector sensor system scanned in frequency is used to detect the permittivity of the material of an object being sensed. A capaciflector sensor element, coupled to current-measuring voltage follower circuitry, is driven by a frequency swept oscillator and generates an output which corresponds to capacity as a function of the input frequency. This swept frequency information is fed into apparatus e.g. a digital computer for comparing the shape of the capacitance vs. frequency curve against characteristic capacitor vs. frequency curves for a variety of different materials which are stored, for example, in a digital memory of the computer or a database. Using a technique of pattern matching, a determination is made as to the identification of the material. Also, when desirable, the distance between the sensor and the object can be determined.

摘要翻译： 使用频率扫描的电容式传感器系统来检测被感测物体的材料的介电常数。 耦合到电流测量电压跟随器电路的电容器传感器元件由频率扫描振荡器驱动，并且产生对应于作为输入频率的函数的容量的输出。 该扫频信息被馈送到装置例如 数字计算机，用于将存储在例如计算机或数据库的数字存储器中的各种不同材料比较电容与频率曲线的形状与特征电容器对频率曲线。 使用模式匹配技术，确定材料的识别。 此外，当需要时，可以确定传感器和物体之间的距离。

公开(公告)号：US5323194A

公开(公告)日：1994-06-21

申请号：US854550

申请日：1992-03-20

申请人： Charles E. Campbell ,  Vincent M. Patella

发明人： Charles E. Campbell ,  Vincent M. Patella

IPC分类号： A61B3/024 ,  A61B3/00

CPC分类号： A61B3/024

摘要： A perimeter is disclosed in which the projection surface of the bowl includes a hemispherical section bounded by a cylindrical perimeter to impart to the interior projection surface of the instrument a "bullet shaped" profile. The perimeter of preferred dimension includes a reduced diameter hemisphere occupying the central 45.degree. of solid angle from the fixated patient's eye. The cylindrical perimeter is joined to the hemisphere and is generated about a cylindrical axis commencing at the spherical center of the hemisphere and extending outward normally from the hemisphere to the point of patient eye placement. The diameter of the cylinder matches and forms a projection continuum with the radius of the hemisphere.

摘要翻译： 公开了一种周边，其中碗的突出表面包括由圆柱形周边限定的半球形部分，以将仪器的内部投影表面赋予“子弹形状”轮廓。 优选尺寸的周长包括从固定的患者眼睛占据与中心45°的立体角的减径直径半球。 圆柱形周边连接到半球，并且围绕从半球的球形中心开始的圆柱轴线产生，并且从半球向外延伸到患者眼睛放置点。 圆柱体的直径与半球的半径相匹配并形成一个投影连续体。

公开(公告)号：US08585687B2

公开(公告)日：2013-11-19

申请号：US12119293

申请日：2008-05-12

申请人： Charles E. Campbell

发明人： Charles E. Campbell

IPC分类号： A61B18/20

CPC分类号： A61F9/00814 ,  A61B3/1015 ,  A61B3/107 ,  A61B5/4836 ,  A61F9/00804 ,  A61F9/00806 ,  A61F9/00808 ,  A61F9/00812 ,  A61F2009/00848 ,  A61F2009/00872 ,  A61F2009/0088 ,  A61F2009/00882

摘要： Methods, software, and systems are provided for determining an ablation target shape for a treatment for an eye of a patient. Techniques include determining wavefront information from the eye of the patient with a wavefront eye refractometer, determining anterior corneal shape information from the eye with a corneal topography device, and combining the wavefront information and the anterior corneal shape information to determine the ablation target shape.

摘要翻译： 提供了用于确定用于患者眼睛的治疗的消融靶形状的方法，软件和系统。 技术包括使用波前眼睛折射仪从患者的眼睛确定波前信息，使用角膜地形设备从眼睛确定前角膜形状信息，以及组合波前信息和前角膜形状信息以确定消融目标形状。

公开(公告)号：US07976163B2

公开(公告)日：2011-07-12

申请号：US11769054

申请日：2007-06-27

申请人： Charles E. Campbell ,  Stephen W. Farrer ,  Daniel R. Neal ,  William S. Powers ,  Thomas D. Raymond

发明人： Charles E. Campbell ,  Stephen W. Farrer ,  Daniel R. Neal ,  William S. Powers ,  Thomas D. Raymond

IPC分类号： A61B3/107

CPC分类号： A61B3/107 ,  A61B3/145 ,  G01B11/25

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。

公开(公告)号：US07826146B2

公开(公告)日：2010-11-02

申请号：US12173756

申请日：2008-07-15

申请人： Charles E. Campbell

发明人： Charles E. Campbell

IPC分类号： G02B1/06 ,  G02B3/12

CPC分类号： A61B3/0285 ,  G02B26/004

摘要： Optical devices, systems, and methods can produce and/or measure cylindrical (as well as spherical) lens shapes throughout a range of both powers and cylindrical axes. Fluid focus lenses employ electrical potentials to vary the shape of a fluid/fluid interface between two immiscible fluids having differing indices of refractions by controlling localized angles between the interface and a surrounding container wall. Spherical power, cylindrical power, and cylindrical access alignment may be varied with no moving parts (other than the fluids).

摘要翻译： 光学器件，系统和方法可以在两个功率和圆柱轴的范围内产生和/或测量圆柱形（以及球形）透镜形状。 流体聚焦透镜通过控制界面和周围容器壁之间的局部角度而采用电位来改变具有不同折射率的两种不混溶流体之间的流体/流体界面的形状。 球形动力，圆柱形动力和圆柱形进给对准可以随着移动部件（流体除外）而变化。

公开(公告)号：US06910770B2

公开(公告)日：2005-06-28

申请号：US10364766

申请日：2003-02-10

申请人： Charles E. Campbell

发明人： Charles E. Campbell

IPC分类号： A61B3/103 ,  A61B3/107 ,  G01J9/00 ,  A61B3/10

CPC分类号： A61B3/103 ,  A61B3/107 ,  G01J9/00

摘要： Methods and systems for measuring optical aberrations of an eye are provided. In one embodiment, the present invention provides transmitting light from the eye along an optical path to an aberration sensor. An adaptive optic is disposed along the optical path between a target optical system and the aberration sensor. Aberrations of the adaptive optic can be adjusted in response to a signal generated by the aberration sensor so as to provide a desired sensed aberration. The shape of the adjusted adaptive optic can be determined with the aberration sensor by transmitting an adaptive optic configuration measurement beam along the optical path.

摘要翻译： 提供了用于测量眼睛的光学像差的方法和系统。 在一个实施例中，本发明提供了将来自眼睛的光沿光路传输到像差传感器。 沿着目标光学系统和像差传感器之间的光路布置自适应光学元件。 可以响应于由像差传感器产生的信号来调整自适应光学元件的像差，以便提供期望的感测像差。 通过沿着光路发送自适应光学配置测量光束，可以用像差传感器来确定经调整的自适应光学器件的形状。