公开(公告)号：US06577405B2

公开(公告)日：2003-06-10

申请号：US09754991

申请日：2001-01-05

申请人： David M. Kranz ,  Eric P. Rudd ,  David Fishbaine ,  Carl E. Haugan

发明人： David M. Kranz ,  Eric P. Rudd ,  David Fishbaine ,  Carl E. Haugan

IPC分类号： G01B1124

CPC分类号： H04N5/372 ,  G01B11/2518 ,  G01B11/30

摘要： An optical system for computing a height of a target on a surface includes a light projector for projecting light. The light passes through a patterned reticle and a projector lens so as to illuminate the target with an image of the pattern. The light is projected telecentrically between the reticle and the projector lens, and a camera is positioned along a receive optical path. The camera receives an image of the target through a receive lens. The target and the pattern move at least three times with respect to each other, and the camera acquires an image of the object at each of at least three positions.

摘要翻译： 用于计算表面上的目标的高度的光学系统包括用于投射光的投光器。 光通过图案化的掩模版和投影仪透镜，以用图案的图像照亮目标。 光线以中心方式投影在标线片和投影仪透镜之间，并且相机沿着接收光路定位。 相机通过接收镜头接收目标的图像。 目标和图案相对于彼此移动至少三次，并且相机在至少三个位置中的每一个处获取对象的图像。

公开(公告)号：US06750899B1

公开(公告)日：2004-06-15

申请号：US09524133

申请日：2000-03-10

申请人： David Fishbaine ,  Timothy A. Skunes ,  Eric P. Rudd ,  David M. Kranz ,  Carl E. Haugan

发明人： David Fishbaine ,  Timothy A. Skunes ,  Eric P. Rudd ,  David M. Kranz ,  Carl E. Haugan

IPC分类号： H04N718

CPC分类号： G06T7/0004 ,  G01B11/2518 ,  G01B11/30 ,  G01N21/95684 ,  G06T2207/10152 ,  G06T2207/30152 ,  H04N5/372

摘要： A novel inspection system for inspecting an article of manufacture, such as a printed circuit board, is disclosed, where the system includes a strobed illuminator adapted to project light through a reticle so as to project a pattern of light onto an area of the printed circuit board. A board transport responsively positions the board to at least two distinct positions, where each position corresponding to a different phase of the projected light. Also included is a detector adapted to acquire at least two images of the area, each image corresponding to one of the at least two different phases. An encoder monitors the movement of the board and outputs a position output, and a processor connected to the encoder, the board transport, the illuminator and the detector controlledly energizes the illuminator to expose the area as a function of the position output, the processor co-siting the at least two images and constructing a height map image with the co-sited images.

摘要翻译： 公开了一种用于检查诸如印刷电路板的制品的新型检查系统，其中系统包括频闪照明器，其适用于通过掩模版投射光以将光线投射到印刷电路的区域上 板。 板传输响应地将板定位到至少两个不同的位置，其中每个位置对应于投影光的不同相位。 还包括检测器，其适于获取该区域的至少两个图像，每个图像对应于至少两个不同相中的一个。 编码器监视电路板的移动并输出位置输出，连接到编码器的处理器，电路板传输，照明器和检测器控制地照亮照明器，使位置输出的函数露出该区域，处理器 选择所述至少两个图像并且使用所述共同图像构建高度图图像。

公开(公告)号：US06678062B2

公开(公告)日：2004-01-13

申请号：US10021288

申请日：2001-12-07

申请人： Paul R. Haugen ,  David Fishbaine ,  Eric P. Rudd ,  David M. Kranz ,  Carl E. Haugen ,  Adam Reinhardt

发明人： Paul R. Haugen ,  David Fishbaine ,  Eric P. Rudd ,  David M. Kranz ,  Carl E. Haugen ,  Adam Reinhardt

IPC分类号： G01B525

CPC分类号： G01B11/30 ,  H05K13/08

摘要： An automated system includes improved height sensing. In one aspect, a on-head camera performs the dual functions of fiducial imaging and height sensing using an auxiliary off-axis light source and triangulation. In another aspect, an on-head height sensor is positioned to measure height at a location that is not beneath any nozzles. The sensor provides height information at a plurality of locations over the board, and a height map of the board is created. In yet another aspect of the invention, the above features are combined to provide an on-head camera that images fiducials and measures height at a plurality of locations such that a height map is created.

摘要翻译： 自动化系统包括改进的高度感测。 一方面，头戴式摄像机使用辅助离轴光源和三角测量来执行基准成像和高度感测的双重功能。 在另一方面，头部高度传感器被定位成在不在任何喷嘴下方的位置处测量高度。 传感器在板上的多个位置提供高度信息，并且创建板的高度图。 在本发明的另一方面，上述特征被组合以提供在多个位置上对基准进行成像和测量高度的头戴式相机，从而创建高度图。

公开(公告)号：US6049384A

公开(公告)日：2000-04-11

申请号：US820380

申请日：1997-03-18

申请人： Eric P. Rudd ,  David Fishbaine ,  Paul R. Haugen ,  David M. Kranz

发明人： Eric P. Rudd ,  David Fishbaine ,  Paul R. Haugen ,  David M. Kranz

IPC分类号： G01B11/25 ,  G01B21/22

CPC分类号： G01B11/2527

摘要： An apparatus for three dimensional imaging using multi-phased structured light. Measurement of dimensions as small as two hundred microns within one percent accuracy is possible, and multiple scans of a target object, such as the solder pads on an electronic circuit board substrate, are not required. A light source, having a pair of synchronized lamps and a specially designed reticle, projects two different phases of structured light onto a target object. The two phases are projected nearly instantaneously, and the detector is able to discriminate between the two exposures presented by the two out of phase illuminations. The method for presenting the three dimensional image uses filtering techniques and certain assumptions to resolve intensity equations having three unknowns from the two exposures of out of phase structured light.

摘要翻译： 一种使用多相结构光的三维成像装置。 可以在一百分之一精度内测量尺寸小至二百微米，并且不需要对目标物体（例如电子电路板基底上的焊盘）进行多次扫描。 具有一对同步灯和特别设计的光罩的光源将两个不同阶段的结构光投射到目标物体上。 两相投影几乎瞬时，检测器能够区分由两个相位不同相位呈现的两次曝光。 用于呈现三维图像的方法使用滤波技术和某些假设来解决来自相位结构光的两次曝光的具有三个未知数的强度方程。

公开(公告)号：US08388204B2

公开(公告)日：2013-03-05

申请号：US12886784

申请日：2010-09-21

申请人： Carl E. Haugan ,  Timothy A. Skunes ,  Paul R. Haugen ,  Eric P. Rudd ,  Beverly Caruso

发明人： Steven K. Case ,  Carl E. Haugan ,  Timothy A. Skunes ,  Paul R. Haugen ,  Eric P. Rudd

IPC分类号： F21V8/00

CPC分类号： H04N7/188 ,  G01N21/9501 ,  G01N21/956 ,  H04N13/243 ,  H04N2013/0081

摘要： An optical inspection system and method are provided. A workpiece transport moves a workpiece in a nonstop manner. An illuminator includes a light pipe and is configured to provide a first and second strobed illumination field types. First and second arrays of cameras are arranged to provide stereoscopic imaging of the workpiece. The first array of cameras is configured to generate a first plurality of images of the workpiece with the first illumination field and a second plurality of images of the feature with the second illumination field. The second array of cameras is configured to generate a third plurality of images of the workpiece with the first illumination field and a fourth plurality of images of the feature with the second illumination field. A processing device stores at least some of the first, second, third, and fourth pluralities of images and provides the images to an other device.

摘要翻译： 提供光学检查系统和方法。 工件传送以不间断的方式移动工件。 照明器包括光管并且被配置为提供第一和第二选通照明场类型。 照相机的第一和第二阵列被布置成提供工件的立体成像。 第一阵列相机被配置为利用第一照明场和具有第二照明场的特征的第二多个图像来生成工件的第一多个图像。 第二阵列相机被配置为利用第一照明场和具有第二照明场的特征的第四多个图像来生成工件的第三多个图像。 处理装置存储第一，第二，第三和第四多个图像中的至少一些，并将图像提供给另一个装置。

公开(公告)号：US06593705B1

公开(公告)日：2003-07-15

申请号：US09977006

申请日：2001-10-12

申请人： Eric P. Rudd ,  Carl E. Haugan

发明人： Eric P. Rudd ,  Carl E. Haugan

IPC分类号： H05B3700

CPC分类号： G01B11/2518 ,  G01B11/30 ,  G06T1/0007 ,  G06T7/0002 ,  G06T7/0004 ,  G06T2207/30152 ,  H03K3/57 ,  H05B41/34

摘要： A flashlamp circuit includes a charge reservoir that receives a first voltage from an external source. The charge reservoir is coupled to a resonator and a plurality of discharge capacitors to provide a second voltage to the plurality of discharge capacitors that is greater than the first voltage. A switch is disposed between at least one of the discharge capacitors and ground to selectively charge the at least one discharge capacitor based upon an input to the switch. Discharge energy is passed from the discharge capacitor(s) to a flashlamp through a discharge bank without passing through any inductive elements. A bleeder circuit can be interposed between the power supply and the reservoir to discharge the reservoir upon shutdown.

摘要翻译： 闪光灯电路包括从外部源接收第一电压的电荷贮存器。 电荷贮存器耦合到谐振器和多个放电电容器，以向大于第一电压的多个放电电容器提供第二电压。 开关设置在至少一个放电电容器和接地之间，以基于对开关的输入来选择性地对所述至少一个放电电容器充电。 放电能量通过放电组件从放电电容器通过闪光灯，而不通过任何电感元件。 在电源和储存器之间可以插入泄放电路，以在关闭时排出储存器。

公开(公告)号：US20120133920A1

公开(公告)日：2012-05-31

申请号：US13309211

申请日：2011-12-01

申请人： Timothy A. Skunes ,  Carl E. Haugan ,  Paul R. Haugan ,  Eric P. Rudd ,  Steven K. Case ,  Beverly Caruso

发明人： Timothy A. Skunes ,  Carl E. Haugan ,  Paul R. Haugan ,  Eric P. Rudd ,  Steven K. Case ,  Beverly Caruso

IPC分类号： G01P3/40

CPC分类号： G01P3/40 ,  G01N21/8806 ,  G01N21/956 ,  H04N7/188 ,  H04N13/243 ,  H04N2013/0081

摘要： An optical inspection system includes a printed circuit board (PCB) transport and an illuminator that provides at least a first strobed illumination field. The illuminator includes a light pipe having a first end proximate the PCB, and a second end opposite the first end and spaced from the first end. An array of cameras is configured to digitally image the PCB and to generate a plurality of images of the PCB with the at least first strobed illumination field type. At least one structured light projector is disposed to project structured illumination on the PCB. The at least one array of cameras is configured to digitally image the PCB while the PCB is illuminated with structured light, to provide a plurality of structured light images. A processing device is configured to generate an inspection result as a function of the plurality of images and the plurality of structured light images.

摘要翻译： 光学检查系统包括印刷电路板（PCB）传输和提供至少第一选通照明场的照明器。 照明器包括具有靠近PCB的第一端的光管和与第一端相对并与第一端间隔开的第二端。 摄像机阵列被配置为对PCB进行数字成像并利用至少第一选通的照明场类型生成PCB的多个图像。 设置至少一个结构化的投光器以将结构化照明投影到PCB上。 所述至少一个相机阵列被配置为在PCB被结构化光照射的同时对PCB进行数字成像，以提供多个结构化的光图像。 处理装置被配置为产生作为多个图像和多个结构光图像的函数的检查结果。

公开(公告)号：US06385335B1

公开(公告)日：2002-05-07

申请号：US09654278

申请日：2000-09-01

申请人： Eric P. Rudd ,  David Fishbaine

发明人： Eric P. Rudd ,  David Fishbaine

IPC分类号： G06K952

CPC分类号： G06T7/73 ,  G06T7/70 ,  G06T2207/30141

摘要： A computer implemented software device for estimating background tilt and offset is disclosed to preferably be adaptable to an optical measurement instrument wherein the estimated parameters are resolved to generate a reference plane to be subtracted from a height map of a phase profile. A set of histograms of heights is used to develop a merit function. A two-dimensional high speed iterative search is used to optimize the merit function to generate a reference plane coincident with the spatial tilt of the phase profile. The invention enables real-time measurement of substrate height for preferred use in high-speed image processing operations relating to circuit-board production lines.

摘要翻译： 公开了一种用于估计背景倾斜和偏移的计算机实现的软件设备，以优选地适用于光学测量仪器，其中所估计的参数被分辨以产生要从相位轮廓的高度图中减去的参考平面。 使用一组高度的直方图来开发优点函数。 使用二维高速迭代搜索来优化优值函数以生成与相位轮廓的空间倾斜一致的参考平面。 本发明能够实现基板高度的实时测量，以便优选用于与电路板生产线有关的高速图像处理操作。

公开(公告)号：US6115491A

公开(公告)日：2000-09-05

申请号：US159857

申请日：1998-09-24

申请人： Eric P. Rudd ,  David Fishbaine

发明人： Eric P. Rudd ,  David Fishbaine

IPC分类号： G06T7/00 ,  G06K9/52 ,  G06T1/20 ,  G06T3/00 ,  G06T5/40

CPC分类号： G06T7/0042 ,  G06T7/004 ,  G06T2207/30141

摘要： A computer implemented software device for estimating background tilt and offset is disclosed to preferably be adaptable to an optical measurement instrument wherein the estimated parameters are resolved to generate a reference plane to be subtracted from a height map of a phase profile. A set of histograms of heights is used to develop a merit function. A two-dimensional high speed iterative search is used to optimize the merit function to generate a reference plane coincident with the spatial tilt of the phase profile. The invention enables real-time measurement of substrate height for preferred use in high-speed image processing operations relating to circuit-board production lines.

公开(公告)号：US06288786B1

公开(公告)日：2001-09-11

申请号：US09517677

申请日：2000-03-02

申请人： Eric P. Rudd ,  William P. Kennedy ,  Troy R. Pesola ,  David D. Madsen

发明人： Eric P. Rudd ,  William P. Kennedy ,  Troy R. Pesola ,  David D. Madsen

IPC分类号： G01B1114

CPC分类号： G01S17/48 ,  G01B11/026 ,  G01S7/481 ,  G01S7/4811 ,  G01S7/491

摘要： A digital range sensor comprises a light source, an optical element to focus the light from the source down to a small spot on a target, a second optical element that is mounted obliquely from the source axis, and a prism mounted on a multi-element detector, which in turn is mounted at the focus of the light returning from the target. The purpose of the prism on the detector is to direct the light onto the active surface of the detector at an angle closer to normal incidence than would otherwise be possible. The detector produces digital data which is transferred to a control module for processing and to produce a numerical range measurement.

摘要翻译： 数字范围传感器包括光源，将来自源的光聚焦到目标上的小点的光学元件，从源轴倾斜安装的第二光学元件和安装在多元件上的棱镜 检测器，其又安装在从目标返回的光的焦点处。 检测器上的棱镜的目的是将光以比其他方式更接近的正常入射角将光引导到检测器的有效表面上。 检测器产生数字数据，传送到控制模块进行处理并产生数值范围测量。