| 摘要 |
The invention provides a simple alignment device which is mounted on the golf club and which enables the golfer to determine when the club face is properly aligned without the assistance of another person. The alignment device comprises a linearoptic or lenticular screen (28) which provides a three-dimensional visual image of an indicating mark below the surface of the screen. When the position of the screen changes relative to the golfer's eyes, the position of the indicating mark (34) changes at a magnified rate, thereby providing a readily apparent indication of the position of the club face. In one embodiment of the alignment device the screen provides the image of a line (34) which is aligned with lines (35,36) on the club above and below the screen when the club face is aligned square to the target. When the club shaft and club face are rotated slightly out of alignment, the line on the screen moves out of alignment with the lines on the club. In another embodiment of the alignment device no image is visible on the screen when the club face is properly aligned, but an indicating mark or color becomes visible if the club is rotated out of alignment in either direction. <IMAGE> |
