公开(公告)号：US4609939A

公开(公告)日：1986-09-02

申请号：US631761

申请日：1984-07-17

申请人： Kunio Kozawa ,  Soichi Ishikawa ,  Mamoru Yoshida

发明人： Kunio Kozawa ,  Soichi Ishikawa ,  Mamoru Yoshida

IPC分类号： H04N5/232 ,  G01M11/06 ,  H04N7/18 ,  G01J1/00

CPC分类号： G01M11/067 ,  G01M11/064 ,  H04N7/18

摘要： Disclosed is a method of correcting the position of a TV camera for taking up the image of an object to produce video signals of the image, suitable for use in, for example, automotive headlamp beam testing system. The images of reference points which are provided for the purpose of correcting the TV camera position are taken up by the TV camera. Then, the position data representing the positions of the reference points in the field of vision of the TV camera is determined. The position data are compared with predetermined reference point data representing the positions of the reference points in the field of vision of the TV camera as obtained when the TV camera is in the correct position, thereby determining the amount of deviation of the TV camera. Then, the driving unit is operated in accordance with the thus determined amount of deviation to adjust the optical axis of said TV camera so as to eliminate the deviation of the TV camera position. Disclosed also is a method in which the measurement data obtained through the TV camera is corrected in accordance with the amount of deviation of the TV camera, as well as an apparatus suitable for carrying out these methods.

摘要翻译： 公开了一种校正用于摄取对象的图像的TV摄像机的位置以产生适合用于例如汽车前照灯束测试系统的图像的视频信号的方法。 为了校正电视摄像机位置而提供的参考点的图像由TV摄像机占据。 然后，确定表示TV摄像机的视野中的参考点的位置的位置数据。 将位置数据与表示TV摄像机处于正确位置时获得的TV摄像机的视野中的参考点的位置的预定参考点数据进行比较，从而确定TV摄像机的偏差量。 然后，根据如此确定的偏差量操作驱动单元，以调节所述TV摄像机的光轴，以消除TV摄像机位置的偏差。 还公开了一种通过TV摄像机获得的测量数据根据TV摄像机的偏移量以及适于执行这些方法的设备进行校正的方法。

公开(公告)号：US4647195A

公开(公告)日：1987-03-03

申请号：US631780

申请日：1984-07-17

申请人： Soichi Ishikawa ,  Mamoru Yoshida ,  Kunio Kozawa

发明人： Soichi Ishikawa ,  Mamoru Yoshida ,  Kunio Kozawa

IPC分类号： G01M11/06 ,  G01J1/00

CPC分类号： G01M11/064 ,  G01M11/065 ,  G01M11/067

摘要： A headlamp testing method of the invention involves the steps of applying the low beam of the headlamp onto a screen, determining the position of the geometrical center of a closed area of illuminance higher than a predetermined level, determining the position of a cut off line cross point from the position of the geometrical center and a predetermined amount of offset, and determining a presumption line cut off line from the cut off line cross point. The presumption line thus determined is displayed together with a mark which indicates the within which the cross point should fall, and the headlamp beam is judged as being acceptable when the cross point is located within this range.

摘要翻译： 本发明的前照灯测试方法包括以下步骤：将前照灯的近光灯施加到屏幕上，确定高于预定水平的照度的闭合区域的几何中心的位置，确定切断线十字的位置 从所述几何中心的位置指定预定量的偏移量，并且确定从所述切断线交叉点切断的推定线。 如此确定的推测线与表示交叉点应该落下的标记一起显示，并且当交叉点位于该范围内时，前照灯光束被判断为可接受。