| 摘要 |
PURPOSE:To obtain the accurate result of detection by providing two adjusting mechanisms, namely, one for adjusting the posture of a detector so that a detecting axis may be parallel to the first plane including a reference axis, and the other for adjusting the posture of the detector so that the detecting axis may be parallel to the second plane perpendicularly crossing the first plane. CONSTITUTION:A pitch angle speedometer 7 and a yawing angle speedometer 11 respectively output signals according to a tilt angle in the direction of the optical axis L of a detecting axis by rolling motion. When the tilt angle is found, a pitch tilt adjusting machine screw 16 is operated to oscillate the detecting axis in the longitudinal direction of a camera centering around an axis shown by a base plate 6, and the detecting axis therefore changes in a direction so as to be parallel to a plane (the first plane) parallel to a pitch rotation axis xp. The inclinations of the speedometers 7, 11 are adjusted so that the detecting axes of the speedometers 7, 11 may coincide with the rotation axis xp and the yawing axis xy in their directions as the speedometers 7, 11 respectively keep a state parallel to the first plane. Thus the detecting axis becomes parallel to the rotation axis xp and moreover to the second plane parpendicularly crossing the first plane. |
