公开(公告)号：US5408104A

公开(公告)日：1995-04-18

申请号：US74404

申请日：1993-06-10

Applicant: Patrick Gorria ,  Hafid Jender ,  Michel Paindavoine ,  Frederic Truchetet ,  Pascal Gerard ,  Phu-An Ngo

Inventor： Patrick Gorria ,  Hafid Jender ,  Michel Paindavoine ,  Frederic Truchetet ,  Pascal Gerard ,  Phu-An Ngo

IPC: G01N21/89 ,  G01N21/952 ,  G06T7/00 ,  G01N21/88

CPC classification number: G06T7/001 ,  G01N21/89 ,  G01N2021/8887 ,  G01N21/952 ,  G01N2201/102 ,  G06T2207/10016 ,  G06T2207/30136 ,  G06T2207/30164

Abstract: An apparatus and a process for detecting surface defects on moving long metallic products utilizing linear CCD cameras for effecting exposures at successive times t1, t2,t3 . . . Tn. A processing device calculates differences observed for each pixel or assemble of pixels at the successive times and any variations in the differences makes it possible to detect defects and the extent of the defects. The use of thresholds allows for reduction in the background noise and different orientations of the optical axis of the camera permit the detection of different types of defects.

Abstract translation: 一种利用线性CCD照相机检测移动的长金属制品上的表面缺陷的装置和方法，用于在连续的时间t1，t2，t3进行曝光。 。 。 Tn。 处理装置计算在每个像素处观察到的差异或在连续时间组装像素，并且差异的任何变化使得可以检测缺陷和缺陷的程度。 使用阈值允许减少背景噪声，并且相机的光轴的不同取向允许检测不同类型的缺陷。

公开(公告)号：US5343288A

公开(公告)日：1994-08-30

申请号：US980556

申请日：1992-11-23

Applicant: Brian E. Cohen ,  William M. Greenberg ,  William V. Pagryzinski ,  Brian E. Smith

Inventor： Brian E. Cohen ,  William M. Greenberg ,  William V. Pagryzinski ,  Brian E. Smith

IPC: G01N21/896 ,  G01N21/958 ,  G01N21/88

CPC classification number: G01N21/958 ,  G01N2021/8887 ,  G01N2021/9586 ,  G01N2201/102

Abstract: A system for evaluating the head-up display aperture of a vehicle windshield with respect to established optical standards, independently of the projection system with which it is to be utilized. A fixture is provided for mounting a windshield in a predetermined position. An object plate having a series of accurately spaced parallel slits therethrough is positioned so that a light source positioned behind the object plate directs a series of narrow elongated light beams corresponding to the slits against the interior surface of the windshield within the display area. A line scan camera array system scans the display area and produces signals indicative of the apparent positions of the primary and secondary images of the beams reflected by the opposite surfaces of the windshield. The signals are transmitted to and stored within a computer system as a measured data base or map. An illuminated calibration plate identical to the object plate and positioned at the ideal virtual image plane of the windshield and camera system, is similarly scanned by the line scan camera array system in the absence of a windshield. The camera produces signals indicative of the positions of the lines and transmits them to the computer system for storage as a reference or calibration data base or map.

Abstract translation: 一种用于相对于建立的光学标准来评估车辆挡风玻璃的平视显示孔径的系统，独立于要利用其的投影系统。 提供了用于将挡风玻璃安装在预定位置的固定装置。 定位具有一系列精确间隔开的平行狭缝的物体板，使得位于物体板后面的光源将对应于狭缝的一系列窄的细长光束导向显示区域内挡风玻璃的内表面。 线扫描相机阵列系统扫描显示区域并产生指示由挡风玻璃的相对表面反射的光束的主图像和次图像的表观位置的信号。 将信号作为测量数据库或地图发送到计算机系统并存储在计算机系统中。 在不存在挡风玻璃的情况下，与行扫描相机阵列系统类似地扫描与对象板相同并且位于挡风玻璃和照相机系统的理想虚像平面处的照明校准板。 相机产生指示线的位置的信号，并将它们发送到计算机系统作为参考或校准数据库或地图进行存储。

公开(公告)号：US4922337B1

公开(公告)日：1994-05-03

申请号：US24938588

申请日：1988-09-26

Applicant: PICKER INT INC

Inventor： HUNT ROBERT P ,  GILBLOM DAVID L

IPC: B65H26/00 ,  D06H3/08 ,  G01N21/84 ,  G01N21/88 ,  G01N21/89 ,  G01N21/898 ,  G01N21/93 ,  G06T1/00 ,  H04N5/253 ,  H04N5/372 ,  H04N7/18

CPC classification number: H04N5/37206 ,  G01N21/88 ,  G01N21/89 ,  G01N2021/845 ,  G01N2021/8887 ,  G01N2201/102 ,  H04N5/253 ,  H04N7/188

公开(公告)号：US5260766A

公开(公告)日：1993-11-09

申请号：US862078

申请日：1992-04-02

Applicant: Mark H. Armitage

Inventor： Mark H. Armitage

IPC: B29C65/18 ,  B29C65/82 ,  G01N21/89 ,  G01N21/88

CPC classification number: G01N21/89 ,  B29C65/18 ,  B29C65/8253 ,  B29C66/0326 ,  B29C66/1122 ,  B29C66/232 ,  B29C66/4312 ,  B29C66/80 ,  B29C66/8122 ,  B29C66/81427 ,  B29C66/81435 ,  B29C66/8322 ,  B29C66/849 ,  B29C2793/009 ,  B29C66/81267 ,  B29C66/81422 ,  B29C66/81423 ,  B29C66/9672 ,  B29K2909/08 ,  G01N2021/8887 ,  G01N2201/102 ,  G01N2201/1085

Abstract: An apparatus and method for detection of an imperfect seal between a plurality of plastic sheets. A transparent heated seal bar is tightly applied against the plurality of plastic sheets with the heat producing a welding between the sheets. A light source is projected into the seal bar with reflection occurring back through the seal bar from the seal area producing an image. This image is then picked up by a camera and transmitted to a visual analyzing computer which compares the produced seal to an image of a perfect seal and if significant differences are noted the computer causes activation of an annunciator to make known the creation of the imperfect seal.

Abstract translation: 一种用于检测多个塑料片之间的不完美密封的装置和方法。 透明的加热密封条紧紧地施加到多个塑料片上，其中热量在片之间产生焊接。 光源被投射到密封条中，反射通过密封条从密封区域返回，产生图像。 然后，该图像由照相机拾取并传输到视觉分析计算机，该计算机将所生成的印章与完美印章的图像进行比较，并且如果注意到显着的差异，则计算机引起报警器的激活以使得知道不完美密封的产生 。

公开(公告)号：US5249034A

公开(公告)日：1993-09-28

申请号：US820975

申请日：1992-01-15

Applicant: Nobuhiro Minato

Inventor： Nobuhiro Minato

IPC: G01N21/88 ,  G01N21/90 ,  G06T1/00

CPC classification number: G01N21/88 ,  G01N2021/8887 ,  G01N2201/102

Abstract: A method of and an apparatus for inspecting an end of an object for a defect by which not only a defect caused by deformation of an end of an object in a horizontal direction but also another defect caused by deformation in a vertical direction can be detected with a high degree of accuracy. Light from an end portion of an object is received by a pair of one- or two-dimensional image sensors and disposed at a predetermined angle relative to each other, and brightness outputs of individual picture elements of the image sensors are stored into memories. From the stored signals, a bright line produced by light from an edge of the object end portion is detected for each image sensor, and a position of the bright line is calculated as a digital amount from a number of picture elements for each image sensor. Then, the digital amounts are added and substracted between the image sensors. A defect is judged from results of the addition and subtraction.

公开(公告)号：US5125035A

公开(公告)日：1992-06-23

申请号：US671168

申请日：1991-03-15

Applicant: Terrence McCarthy ,  Gerard Haring

Inventor： Terrence McCarthy ,  Gerard Haring

IPC: G01N21/956 ,  G06T7/00

CPC classification number: G06T7/0042 ,  G01N21/95692 ,  G01N2021/8887 ,  G01N2201/102

Abstract: A system for automatically inspecting the true position of cooling holes manufactured in hot section turbine blades and vanes. The system includes a computer controlled rotary tilt table for correctly positioning the blade or vane having the cooling holes, and computer controlled, a coordinate measuring machine for positioning a video camera in the X, Y, Z directions so that it can look straight into the selected cooling hole of the blade or vane. An image analyzer receives the image from the video camera, calculates the centroid of the image, and the host computer calculates and reports deviation between the actual or true position of the cooling hole and data relating to the correct position of the same. A touch probe is also provided with the coordinate measuring machine to verify the correct position of the blade or vane prior to imaging.

Abstract translation: 一种用于自动检查热段涡轮叶片和叶片中制造的冷却孔的真实位置的系统。 该系统包括用于正确地定位具有冷却孔的叶片或叶片的计算机控制的旋转倾斜台和计算机控制的坐标测量机，用于将摄像机定位在X，Y，Z方向上，使得它可以直视为 所选择的叶片或叶片的冷却孔。 图像分析仪从摄像机接收图像，计算图像的质心，主计算机计算并报告冷却孔的实际位置或真实位置之间的偏差以及与其正确位置相关的数据。 在坐标测量机之前，还提供一个探针，以便在成像之前验证刀片或叶片的正确位置。

公开(公告)号：US5058178A

公开(公告)日：1991-10-15

申请号：US454210

申请日：1989-12-21

Applicant: Rajarshi Ray

Inventor： Rajarshi Ray

IPC: G01B11/30 ,  B23K1/00 ,  G01N21/88 ,  G01N21/93 ,  G01N21/956 ,  G06T1/00 ,  G06T7/00 ,  H04N7/18 ,  H05K3/34

CPC classification number: G06T7/0006 ,  G01N21/95684 ,  G01N2021/8825 ,  G01N2021/8867 ,  G01N2021/8887 ,  G01N2021/95661 ,  G01N2201/102 ,  G06T2207/30152

Abstract: Defective or missing solder bumps (18) on a surface (13) of an article (10) such as a chip carrier are detected by first illuminating the surface with dark field illumination. Next, the image of the surface of the article is captured, typically by a television camera (30). The captured image is processed to detect defects by first creating a window (57) in the image about each group of solder bumps and then creating a bounding box (58) about each bump in each window. Each of a set of attributes, including: the number, size and location of the windows, the size location and number of boxes in each window, and the dimensions, shape and brightness of the image in each box, is measured. The value of each attribute is compared to a reference value, representing the value of the attribute when no defects are present. If the attribute differs by more than a predetermined tolerance for its reference value, than a particular defect is prevent. Verification of certain defects may be accomplished by repeating the above-described process using bright field illumination.

Abstract translation: 通过首先用暗场照明照射表面，来检测诸如芯片载体的物品（10）的表面（13）上的缺陷或缺失的焊料凸块（18）。 接下来，通常通过电视摄像机（30）拍摄物品表面的图像。 处理捕获的图像以通过首先在关于每组焊料凸块的图像中创建窗口（57），然后在每个窗口中围绕每个凸起创建边界框（58）来检测缺陷。 一组属性中的每一个，包括：窗口的数量，大小和位置，每个窗口中的框的大小位置和数量，以及每个框中的图像的尺寸，形状和亮度。 将每个属性的值与参考值进行比较，表示当没有缺陷存在时属性的值。 如果属性对于其参考值差异超过预定的公差，则防止特定缺陷。 可以通过使用亮场照明重复上述过程来实现某些缺陷的验证。

公开(公告)号：US4972093A

公开(公告)日：1990-11-20

申请号：US439553

申请日：1989-11-20

Applicant: Don W. Cochran ,  James R. Austin

Inventor： Don W. Cochran ,  James R. Austin

IPC: G01N21/84 ,  G01N21/88 ,  G01N21/954 ,  G01N21/956

CPC classification number: G01N21/8806 ,  G01N2021/8455 ,  G01N2021/8887 ,  G01N2201/06153 ,  G01N2201/102

Abstract: An engineered lighting system for use in an inspection system is comprised of an array of light emitting diodes. A specimen is brought into the viewing area, and a current pulse is provided to the diodes of the array to selectively flash all or a portion of the diodes of the array. Reflected light from the specimen is sensed and a digitized image is generated therefrom. An illumination level of the digitized image is adjustable, in whole or in part, by varying the effective lighting intensity of one or more of the diodes of the array during a flash period. The digitized image of the specimen is compared to data indicative of acceptability of the specimen, and acceptance or rejection of the specimen is decided on a basis of a comparison therebetween.

Abstract translation: 用于检查系统的工程照明系统由发光二极管阵列组成。 将样本带入观察区域，并且向阵列的二极管提供电流脉冲以选择性地闪烁阵列的二极管的全部或一部分。 检测到来自样本的反射光并从其中产生数字化图像。 通过在闪光期间改变阵列的一个或多个二极管的有效照明强度，数字化图像的照明水平可以全部或部分地调整。 将样本的数字化图像与指示样品可接受性的数据进行比较，并且基于它们之间的比较来确定样品的接受或排除。

公开(公告)号：US4930890A

公开(公告)日：1990-06-05

申请号：US210097

申请日：1988-06-22

Applicant: Yasuhiko Hara ,  Kenzo Endo

Inventor： Yasuhiko Hara ,  Kenzo Endo

IPC: G01N21/88 ,  G01N21/64 ,  G01N21/956 ,  G01R31/28 ,  G01R31/309 ,  H05K3/00 ,  H05K13/08

CPC classification number: G01R31/309 ,  G01N21/95692 ,  G01R31/2806 ,  H05K13/08 ,  G01N2021/8887 ,  G01N2021/95653 ,  G01N21/64 ,  G01N2201/102

Abstract: A method and apparatus for detecting through-hole voids in a multi-layer printed circuit board. The through-hole is formed with an electrical conductor for interconnecting wiring patterns of upper layers and wiring patterns of lower layers of the printed wiring board and is illuminated with a beam having a wavelength falling within a specified wavelength band capable of exciting an luminescent beam from a layer material. The layer material is exposed by a through-hole void in the through-hole of the printed wiring board. The luminescent beam excited by the illumination beam impinging upon the layer material by way of the through-hole void in the through-hole is focussed by means of a focussing optical system and a photoelectric converter. The photoelectric converter converts the luminescent beam into an electrical signal. The presence of a through-hole void is indicated by the electrical signal.

Abstract translation: 一种用于检测多层印刷电路板中的通孔空隙的方法和装置。 通孔形成有电导体，用于互连印刷线路板的上层的布线图案和下层的布线图案，并且用波长落在能够激发发光束的规定波长带内的波长照射 一层材料。 层状材料通过印刷电路板的通孔中的通孔空洞露出。 由通过通孔中的通孔空穴撞击在层材料上的照明光束激发的发光束通过聚焦光学系统和光电转换器聚焦。 光电转换器将发光束转换为电信号。 电气信号表示通孔空隙的存在。

公开(公告)号：US4853776A

公开(公告)日：1989-08-01

申请号：US176540

申请日：1988-04-01

Applicant: Hisao Itaya ,  Toshihiko Okada ,  Morishige Hata ,  Shunji Koike ,  Takahiro Onishi

Inventor： Hisao Itaya ,  Toshihiko Okada ,  Morishige Hata ,  Shunji Koike ,  Takahiro Onishi

IPC: D06H3/08 ,  G01N21/898 ,  H04N7/18

CPC classification number: H04N7/18 ,  G01N21/8983 ,  H04N7/188 ,  G01N2021/8867 ,  G01N2021/8887 ,  G01N2201/102

Abstract: An inspection method and apparatus for searching a fabric in strip form to find lump type and void type flaws on both faces of the fabric. Strobes and image pickup elements are arranged at opposite sides of the fabric in transportation. The strobes at one side of the fabric are caused to emit light, and the image pickup elements at the same side detect light reflected by the fabric while the image pickup elements at the other side detect light passing through the fabric.

Abstract translation: 一种检索方法和装置，用于以织带形式搜索织物以在织物的两个面上发现块状和空隙型缺陷。 色带和图像拾取元件布置在运输中织物的相对两侧。 使织物一侧的闪光灯发光，同时侧面的图像拾取元件检测由织物反射的光，同时另一侧的图像拾取元件检测穿过织物的光。