公开(公告)号：US5760907A

公开(公告)日：1998-06-02

申请号：US621087

申请日：1996-03-22

申请人： Norbert Basler ,  Jorg Fiedler ,  Bryan Hayes ,  Frank Hermann

发明人： Norbert Basler ,  Jorg Fiedler ,  Bryan Hayes ,  Frank Hermann

IPC分类号： G01N21/95 ,  G11B7/0037 ,  G11B7/26 ,  G11B27/36 ,  G01B11/00

CPC分类号： G01N21/9506 ,  G11B27/36 ,  G11B7/00375 ,  G11B7/26

摘要： A process and device for the optical testing of a surface in which the surface can be illuminated substantially from above by at least one upper light and from the side by at least one lower light, at a sharp angle with respect to the surface. The light reflected and/or scattered by the surface is recorded in a test period by at least one light-sensitive receiver and at least one actual image which is compared with at least one desired image is produced. To permit an improved test provision is made for the surface to be recorded by the light-sensitive receiver at least twice during the test period. During the recording periods in question the surface is illuminated by an at least intermittent illumination from above and/or from the side in a different manner in order to obtain at least two actual images with different illumination of the surface.

摘要翻译： 一种用于光学测试表面的方法和装置，其中表面可以从上方基本上由至少一个上部光线从一侧照射至少一个较低的光线，相对于该表面成锐角。 由表面反射和/或散射的光通过至少一个感光接收器记录在测试周期中，并且产生与至少一个所需图像进行比较的至少一个实际图像。 为了允许在测试期间对由光敏接收机记录的表面进行至少两次改进的测试。 在所讨论的记录周期期间，以不同的方式从上方和/或从侧面以至少间歇照明照射表面，以便获得具有不同表面照明的至少两个实际图像。

公开(公告)号：US5880848A

公开(公告)日：1999-03-09

申请号：US621116

申请日：1996-03-22

申请人： Norbert Basler ,  Jorg Fiedler, deceased ,  Bryan Hayes ,  Frank Herrmann

发明人： Norbert Basler ,  Jorg Fiedler, deceased ,  Bryan Hayes ,  Frank Herrmann

IPC分类号： G01M11/00 ,  G01N21/95 ,  G11B7/26 ,  G11B33/10 ,  G01B11/00 ,  G01N21/00

CPC分类号： G01M11/005 ,  G01N21/9506 ,  G11B33/10 ,  G11B7/26

摘要： The invention relates to a process for the optical testing of a surface of an object, particularly a compact disc, in which the surface is illuminated by at least one light source and the light reflected and/or scattered by the surface is projected onto at least one substantially flat, light-sensitive element of a light-sensitive receiver. The receiver consists of several pixels in the form of a grid in the line direction and the space direction. In a test phase at least one actual image is generated that is compared with at least one desired image which was produced in a read-in phase. To produce an image of the surface with more information the invention provides that during the read-in phase and/or the test phase at least two images of the surface are taken and the image of the surface which is projected on the light-sensitive element is displaced by at least a fraction of the dimension of a pixel in each case in at least one direction with respect to the light-sensitive element. In this way it is possible to detect the ambient field of a pixel so that the printed regions or the like can be classified for an improved evaluation, particularly when producing the desired image.

摘要翻译： 本发明涉及用于光学测试物体表面，特别是光盘的方法，其中表面被至少一个光源照射，并且由表面反射和/或散射的光至少投射到 光敏接收器的一个基本平坦的感光元件。 接收器由在线方向和空间方向上的网格形式的几个像素组成。 在测试阶段，生成与在读入阶段中产生的至少一个期望图像进行比较的至少一个实际图像。 为了产生具有更多信息的表面的图像，本发明提供了在读入阶段和/或测试阶段期间拍摄表面的至少两个图像，并且投射在光敏元件上的表面的图像 在相对于感光元件的至少一个方向上在每种情况下被移位至少一个像素尺寸的一部分。 以这种方式，可以检测像素的环境场，使得印刷区域等可以被分类以进行改进的评估，特别是当产生期望的图像时。