| 摘要 |
An infrared pointer holder includes a stand for mounting, the stand having an upright post terminating in a ball socket, a ball rotated in the ball socket, the ball having a protruded connecting rod, lock means adapted to lock the ball in the ball socket of the stand in the desired angle, a holder base fixedly connected to the connecting rod of the ball, the holder base having a revolving shaft extended in direction perpendicular to the connecting rod of the ball, a DC motor controlled to rotate the revolving shaft, and a coupler coupled to the revolving shaft of the holder base and holding an infrared pointer for measuring the direction and distance of a target.
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