| 摘要 |
PURPOSE:To obtain a surveying device which tracks the movement and vibration of a measurement target point although accurate automatic collimation is possible by providing a laser light projection part with an acoustooptic polariscope for vibrating and scanning the projection direction of laser luminous flux in two dimensions. CONSTITUTION:This surveying device consists of a surveying means 1 and a measurement target means 2 and the acoustooptic polariscope 44 of the means 2 is so controlled with a signal from a control part 45 so that the direction of luminous flux from a projection lens 43 is scanned and vibrated up and down, and right and left. Further, the control part 45 controls a horizontal plane turning driving motor 29, etc., to displace a movable housing in the horizontal and vertical directions. Therefore, even if the direction of the means 2 deviates slightly from a measuring machine main body 3, the laser luminous flux projected toward the main body 3 is scanned and vibrated over a wide range about the optical axis of the projection lens 43 and made incident on the objective 22 of the main body 3. Consequently, the main body 3 tracks the measurement target means 2 automatically even when the measurement target means 2 arranged at a measurement target point is not accurately collimated.
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