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1. 发明授权

US5033847A Angular positioning and calibration of projected reference light planes 失效
标题翻译：投影参考光平面的角度定位和校准
公开(公告)号：US5033847A
公开(公告)日：1991-07-23
申请号：US462653
申请日：1990-01-09
申请人： David L. Hamblin , Edward E. Hart
发明人： David L. Hamblin , Edward E. Hart
IPC分类号： G01C15/00
CPC分类号： G01C15/004
摘要： A portion of first reference light plane is intercepted by a first one of a pair of angularly oriented reflective surfaces and reflected by the second of the pair of reflective surfaces as a second reference light plane at a selectable angle relative to the first reference light plane. The first and second reflective surfaces are movably mounted such that the first reflective surface can be rotated about a first axis coincident with or parallel to an incidence line in the first reflective surface which receives the first light plane and the second reflective surface can be rotated about a second axis parallel to but spaced from the first axis. The first and second reflective surfaces are mounted such that when the first reflective surface moves through an angle of a/2 degrees, the second reflective surface moves through an angle of a degrees. The first reflective surface is further mounted for rotation about a third axis coincident with or parallel to the first axis to vary the projection angle of the second reference light plane relative to the first reference light plane generator. Independent control of the rotational movement of the first reflective surface about the third axis serves to calibrate the pointing direction of the second light plane.
摘要翻译：第一参考光平面的一部分被一对角度取向的反射表面中的第一个被第一个反射表面所截取，并被该对反射表面中的第二个作为相对于第一参考光平面以可选择的角度的第二参考光平面反射。第一反射表面和第二反射表面可移动地安装，使得第一反射表面可以围绕与接纳第一光平面的第一反射表面中与入射线重合或平行的第一轴线旋转，并且第二反射表面可以围绕与第一轴平行但间隔的第二轴。安装第一和第二反射表面，使得当第一反射表面移动1/2度角时，第二反射表面移动一度角。第一反射表面进一步安装成围绕与第一轴线重合或平行于第一轴线的第三轴线旋转，以改变第二参考光平面相对于第一参考光平面发生器的投影角度。围绕第三轴的第一反射表面的旋转运动的独立控制用于校准第二光平面的指向方向。

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