公开(公告)号：US4679935A

公开(公告)日：1987-07-14

申请号：US664828

申请日：1984-10-25

申请人： Yutaka Fukuda ,  Koji Minagawa ,  Hiroichi Nabeshima ,  Koihiro Muneki ,  Yoshikatsu Asano ,  Kazuo Aoki ,  Yutaka Ishizaka

发明人： Yutaka Fukuda ,  Koji Minagawa ,  Hiroichi Nabeshima ,  Koihiro Muneki ,  Yoshikatsu Asano ,  Kazuo Aoki ,  Yutaka Ishizaka

IPC分类号： G01M11/06 ,  G01J1/00

CPC分类号： G01M11/065 ,  G01M11/064

摘要： A method and apparatus for determining or adjusting a projecting direction of a light beam emitted from an automobile headlight is provided. In a first aspect of the present invention, the peripheral region of a light beam is used in determining its projecting direction. In particular, a region definable in a light pattern of the projected beam having a proportionality relation between log S and I, where S indicates the value of an area having light intensity I or above, is determined and its outer contour or any predetermined point in the contour is used in determining the projecting direction. In a second aspect, apparatus for determining a projecting direction of a light beam emitted from an automobile headlight includes an indicator which automatically indicates a predetermined position of a light pattern of the light beam projected. In a third aspect, there is provided a system for automatically adjusting a projecting direction of a light beam if it deviates from a predetermined direction using a motor engageable with a mounting structure of the headlight.

摘要翻译： 提供了一种用于确定或调整从汽车前灯照射的光束的投射方向的方法和装置。 在本发明的第一方面中，光束的周边区域用于确定其投射方向。 特别地，确定具有log S和I之间的比例关系的投影光束的光图案区域，其中S表示具有光强度I或更高的区域的值，并且其外轮廓或任何预定点在 轮廓用于确定投影方向。 在第二方面中，用于确定从汽车前灯发射的光束的投影方向的装置包括自动指示投射的光束的光图案的预定位置的指示器。 在第三方面中，提供一种系统，用于如果使用可与前灯的安装结构接合的电动机偏离预定方向，则自动调节光束的投射方向。