公开(公告)号：EP0639764A1

公开(公告)日：1995-02-22

申请号：EP94306078.0

申请日：1994-08-17

Applicant: Philip Morris Products Inc.

Inventor： Grollimund, Gary E. ,  Longest, Herbert C.,Jr. ,  Smith, Barry S. ,  Vanderlinden, Roy E.

IPC: G01N21/88 ,  A24C5/34

CPC classification number: B07C5/3422 ,  A24C5/3412 ,  B07C5/365 ,  G01N21/952 ,  G01N2021/8887 ,  G01N2201/102

Abstract: Improved systems for optical inspection are provided. The improved systems use modified camera boxes (10) to provide increased, and more uniform, illumination of the objects being inspected through the use of illuminator windows. The lens arrangement of the improved camera boxes is contained within a self-contained, sealed housing (12) that is separate from the camera to prevent particle contamination of the lens arrangement and provide improved flexibility during installation of the camera boxes on the inspection systems.
Illumination light is transmitted along fibres (62), into illuminator (44) and through windows (50), which act as waveguides, and exit as light rays (64). The reflected image, in the form of light rays (66) is captured by mirrors (48) and reflected through windows (50) to prism (36). Prism (36) takes each subimage and directs it to a central focal point, which may occur at a folding mirror (52) or on the camera lens directly.

Abstract translation: 提供了改进的光学检测系统。 改进的系统使用改进的相机盒（10）来通过使用照明器窗口来提供对被检查物体的增加和更均匀的照明。 改进的相机盒的透镜布置被包含在与相机分离的独立的密封壳体（12）中，以防止透镜装置的颗粒污染并且在将相机盒安装在检查系统上时提供改进的灵活性。 照明光沿着光纤（62）传输到照明器（44）中并通过作为波导的窗口（50），并作为光线射出（64）。 以光线（66）的形式的反射图像由反射镜（48）捕获并通过窗口（50）反射到棱镜（36）。 棱镜（36）取每个子图像并将其引导到可能在折叠镜（52）处或照相机镜头上直接发生的中心焦点。

公开(公告)号：EP0570163A3

公开(公告)日：1994-02-09

申请号：EP93303544.6

申请日：1993-05-07

Applicant: Philip Morris Products Inc.

Inventor： Grollimund, Gary ,  Smith, Barry Scott ,  Longest, Cary H., Jr. ,  Osmalov, Jerome S. ,  Evani, Bhanu M.

IPC: G01N21/88 ,  A24C5/34

CPC classification number: G01N21/952 ,  A24C5/3412 ,  B07C5/3422 ,  G01N2021/8887 ,  G01N2201/102

Abstract: In the embodiment, the entire cylindrical surface of a cylindrical object such as a cigarette is optically inspected by first inspecting at least 180° of the circumference of a first side of the surface, and then inspecting at least 180° of the circumference of the other side. Each of the inspection stations illuminates more than 180° of the circumference and images the surface from two angularly spaced directions to ensure that at least 180° of the circumference is seen at each station. Any object having a defective image is automatically rejected from the apparatus, and the images and other statistical information regarding the performance of the system are displayed by the system. The images are formed in such a way as to greatly increase the speed at which the inspection system operates so that it an keep up with the very high rates at which objects such as cigarettes are made in modern machinery (e.g., approximately 10,000 cigarettes per minute). The images are analyzed using techniques which make possible the detection of very small defects and also compensate for possible nonuniform illumination of the objects in the circumferential direction. In another embodiment, inspection of completed cigaretes is accomplished by the cigarettes travelling on a rolling drum (1) pas a single stationary rolling block (512) with perferably two cameras (5,14) connected to a vision system. The first camera views the cigarette before the rolling block, the cigarette is then rolled approximately 180° and then the second camera views the previousl hidden portion of the cigarette. Cigarettes are accepted or rejected based on a comparison of the viewed cigarettes to a predetermined set of characteristics.

Abstract translation: 在该实施例中，通过首先检查表面的第一侧的圆周的至少180°，然后检查另一侧的圆周的至少180°来光学地检查诸如香烟的圆柱形物体的整个圆柱表面 侧。 每个检测站都照射180°以上的圆周，并从两个有角度间隔的方向对表面进行成像，以确保每个工作站至少可以看到180°的圆周。 任何具有缺陷图像的物体都会被自动拒绝，并且系统会显示与系统性能有关的图像和其他统计信息。 这些图像以这样的方式形成，以便极大地提高检查系统的运行速度，从而使其能够跟上现代机械中制造诸如香烟等物体的非常高的速率（例如，每分钟大约10,000支香烟 ）。 使用能够检测非常小的缺陷并且还补偿物体在圆周方向上可能的不均匀照射的技术来分析图像。 在另一个实施例中，完成的香烟的检查是通过在滚筒（1）上行进的香烟完成的，所述香烟通过连接到视觉系统的优选两个照相机（5,14）通过单个固定滚动块（512）。 第一台摄像机在滚动块前查看卷烟，然后将卷烟卷起大约180°，然后第二台摄像机查看卷烟的上一个隐藏部分。 基于所观察到的香烟与预定的一组特征的比较，接受或拒绝香烟。

公开(公告)号：EP0370569B1

公开(公告)日：1994-02-09

申请号：EP89202910.9

申请日：1989-11-16

Applicant: HEUFT SYSTEMTECHNIK GMBH

Inventor： Swart, Nicolaas Cornelis

IPC: G01N21/88

CPC classification number: G01N21/909 ,  G01N2021/8887 ,  G01N2201/102

公开(公告)号：EP0458418A3

公开(公告)日：1992-09-02

申请号：EP91201212.7

申请日：1991-05-21

Applicant: MITSUI MINING & SMELTING CO., LTD.

Inventor： Moriya, Kazuo ,  Wada, Hedio, Grand.Demeure Fukiage 203 ,  Hirai, Katsuyuki, Grand.Demeure Fukiage 203

IPC: G01N21/88

CPC classification number: G01N21/9505 ,  G01N2021/1782 ,  G01N2021/393 ,  G01N2021/4735 ,  G01N2021/8887 ,  G01N2021/8896 ,  G01N2201/102

Abstract: A method for measuring internal defects of a specimen, comprising the steps of allowing a finely focused laser beam to be incident into a specimen from its surface and observing the scattered light of the said laser beam from inside the said specimen from the surface of the specimen and in a different direction to the optical axis of incidence of the laser beam.

公开(公告)号：EP0497477A2

公开(公告)日：1992-08-05

申请号：EP92300419.6

申请日：1992-01-17

Applicant: Toyo Glass Company Limited

Inventor： Minato, Nobuhiro

IPC: G01N21/88 ,  G01N21/90

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 which can accurately detect any of defects caused by deformation of the object end in horizontal and vertical directions. Light from an end of an object (3) is received by a pair of image sensors (1, 2) disposed at a predetermined angle, and brightness outputs of picture elements of the image sensors are stored into a memory (15, 16). From the stored signals, a bright line produced by light from an edge of the object end 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. The digital amounts are added and subtracted between the image sensors, and a defect is judged from results of the addition and subtraction.

Abstract translation: 一种用于检查物体的端部的缺陷的方法和装置，其可以精确地检测由水平和垂直方向上的物体端部的变形引起的任何缺陷。 物体（3）的端部的光由设置在预定角度的一对图像传感器（1,2）接收，图像传感器的图像元素的亮度输出被存储在存储器（15,16）中。 从存储的信号中，针对每个图像传感器检测由对象端的边缘的光产生的亮线，并且从每个图像传感器的多个图像元素计算亮线的位置作为数字量。 在图像传感器之间添加和减去数字量，并且根据加法和减法的结果来判断缺陷。

公开(公告)号：EP0397833A4

公开(公告)日：1991-10-30

申请号：EP89912810

申请日：1989-10-26

Applicant: INEX-VISTECH TECHNOLOGIES INCORPORATED

Inventor： NGUYEN, CAP, VAN ,  FITZMORRIS, TYCE ,  ESPENHAHN, ERIC ,  KLINE, DALE, W. ,  CHANG, ROGER

IPC: G01N21/88 ,  G01N21/90 ,  H04N7/18 ,  G01N21/00 ,  H04N5/30

CPC classification number: G01N21/9054 ,  G01N21/8806 ,  G01N2021/8887 ,  G01N2201/102

公开(公告)号：EP0231941B1

公开(公告)日：1991-09-18

申请号：EP87101522.8

申请日：1987-02-05

Applicant: OMRON TATEISI ELECTRONICS CO.

Inventor： Kobayashi, Shigeki Omron Tateisi Electronics Co. ,  Tateisi, Yoshio Omron Tateisi Electronics Co. ,  Yagawa, Toshio Omron Tateisi Electronics Co. ,  Utsunomiya, Shunji Omron Tateisi Electronics Co. ,  Takahara, Hideaki Omron Tateisi Electronics Co.

IPC: G06F7/02 ,  G01N21/88 ,  G01N21/91 ,  G01N21/84 ,  G01R31/28

CPC classification number: G01N21/956 ,  G01N2021/8845 ,  G01N2021/8887 ,  G01N2021/95615 ,  G01N2021/95638 ,  G01N2201/102 ,  G01R31/2806 ,  G01R31/309

公开(公告)号：EP0370570A1

公开(公告)日：1990-05-30

申请号：EP89202911.7

申请日：1989-11-16

Applicant: HEUFT-QUALIPLUS B.V.

Inventor： Swart, Nicolaas Cornelis

IPC: G01N21/88

CPC classification number: G01N21/909 ,  G01N2021/8887 ,  G01N2201/102

Abstract: The invention has for its purpose to provide a method and an apparatus for inspecting the bent edge of a disc-shaped object, e.g. the annular edge of a metal lid bounding a gutter for sealing compound.
In order to realize such an inspection with great reliability according to the invention the resolution is made as great as possible by means of the following steps:

(2) directing a light beam onto the edge zone of the object under an angle of incidents, such that the bent edge gives a shadow in said edge zone;
(3) previously determining the shape of the reflection picture also determined by said shadow of said illuminated edge zone in case of an object satisfying a predetermined standard;
(4) determining the reflection picture of the edge zone of an object to be inspected; and
(5) comparing the results of steps (4) and (3) and generating a rejection signal in case of a detected deviation lying outside a previously chosen tolerance range.

Abstract translation: 本发明的目的是提供一种用于检查盘形物体的弯曲边缘的方法和装置，例如， 金属盖的环形边缘，用于封闭沟槽，用于密封化合物。 为了实现根据本发明的可靠性的这种检查，通过以下步骤使分辨率尽可能大：（2）将光束以事件角度引导到物体的边缘区域，如 弯曲的边缘在所述边缘区域中产生阴影; （3）在满足预定标准的物体的情况下，预先确定所述照明边缘区域的所述阴影的所述反射图像的形状; （4）确定待检查物体的边缘区域的反射图像; 和（5）比较步骤（4）和（3）的结果，并且在检测到的偏差位于先前选择的公差范围之外的情况下产生拒绝信号。 ñ

公开(公告)号：EP0370569A1

公开(公告)日：1990-05-30

申请号：EP89202910.9

申请日：1989-11-16

Applicant: HEUFT SYSTEMTECHNIK GMBH

Inventor： Swart, Nicolaas Cornelis

IPC: G01N21/88

CPC classification number: G01N21/909 ,  G01N2021/8887 ,  G01N2201/102

Abstract: A stroboscope-lamp, via a half-transparant mirror (2), illuminates the gutter (3) of a lid (4), in which filling compound (5) has been applied. On places where this filling mass or compound (5) is absent, the reflection of the light by the bottom of the gutter will be substantially stronger than in case of filling compound (5) being present.
A video-camera (6) senses the gutter (5) by means of reflection through the half-transparant mirror (2). If gutter (3) is in accordance with the standard filled with filling compound (5), the video-camera (6) senses a dark annular gutter. Regions with lacking filling compound can be sensed as bright spots in this ring, which can readily be detected by means of existing techniques for processing pictures.
The reflection direction of the light is dependent on the angular position of the reflecting surface. Since the reflection of light directly emanating from lamp (1) from the inner side of gutter (3) is directed in a direction outside the angle of view of the camera, there no lacking filling compound will be detected.
By illuminating said surface from an other direction by means of a cylindrical mirror (7) the mentioned area, in this case of lacking of filling compound (5), will also reflect light in the direction of camera (6).

Abstract translation: 频闪仪灯，通过半透射镜（2），照射（3）的盖子（4），其中填充（5）已被施加的排水沟化合物。 上的地方该填充质量或化合物（5）不存在时，光的由槽的底部的反射将是基本上比在填充化合物（5）存在的情况下强。 一种摄像机（6）通过半透光镜通过反射的装置检测所述檐槽（5）（2）。 如果槽（3）是在舞蹈雅与填充有填充物的标准（5），所述摄像机（6）感测的暗环形设计排水沟。 与缺少填充物区可以被感测为在该环的亮点，这可以通过用于处理图像的现有技术的方法可以容易地检测到。 的光的反射方向是依赖于反射面的角度位置。 由于光的反射从直接电灯（1）从沟槽的内侧发出的（3）是针对在视相机的角度以外的方向上，有没有缺乏填充化合物将被检测到。 由柱面镜（7）所提到的区域的方式从其他方向照射所述表面，在这种情况下缺乏填充化合物的（5），这将在摄像机的方向反射的光（6）。

公开(公告)号：EP0271230A3

公开(公告)日：1989-11-08

申请号：EP87310055.6

申请日：1987-11-13

Applicant: AccuRay Corporation

Inventor： Williams, Paul

IPC: G01N21/89 ,  G01D1/14

CPC classification number: G01N21/89 ,  G01D3/022 ,  G01N2021/8874 ,  G01N2021/8887 ,  G01N2021/95615 ,  G01N2201/102

Abstract: The invention provides an apparatus for pre-processing sensor data that represent measurements of a physical parameter of a material under inspection. Sensors are employed to provide a multiplicity of data associated with a corresponding multiplicity of small areas of the material; and a multiplicity of reference data are also generated, each reference datum being associated with a particular sensor datum. From the sensor data and the reference data there are derived a multi­plicity of output signals to be delivered to a signal processor, each output signal being dependent on at least two reference data and an associated sensor datum.