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首页> 外文期刊>Optical engineering >Pivoting a beam about a fixed point with steering mirrors
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Pivoting a beam about a fixed point with steering mirrors

机译：使用转向镜将光束绕固定点旋转

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This article presents a method of adjusting steering mirrors to achieve alignment in just two adjustments. The steering mirrors are adjusted in a way that creates a point that the beam always passes through. The beam pivots about this point as the pointing angle is changed. If the fixed point is located at the center of an aperture, the beam can then be pointed straight to a second aperture, thus completing the alignment. The pivot effect happens naturally when the second mirror is adjusted proportionally more than the first. If the extra amount was 10% and the adjustment to mirror 1 was 3 turns then mirror 2 gets 3.3 turns. The first three turns on both mirrors translates the beam sideways and parallel. The extra 0.3 turns the beam inward slightly in the direction opposite translation, so it crosses over the original beam line at a point that remains fixed. Further adjustments at this same ratio will change the angle through that point, and it appears like it pivots. The extra portion is the ratio A/B, which is the distance between steering mirrors divided by the distance from mirror 2 to the pivot.
机译：本文介绍了一种调整转向镜的方法，只需两次调整即可实现对齐。调节转向镜的方式可以使光束始终通过。随着指向角的改变，光束围绕该点旋转。如果固定点位于孔的中心，则光束可以直接指向第二个孔，从而完成对齐。当第二个镜子比第一个镜子按比例调整得更多时，枢轴效果自然发生。如果多余的量是10％，并且对反射镜1的调整是3圈，那么反射镜2将获得3.3圈。两个反射镜的前三个转向将光束横向和平行平移。额外的0.3会沿与平移相反的方向将光束稍微向内旋转，因此它在保持固定的点上越过原始光束线。以相同的比例进一步调整将改变该点的角度，看起来像是在旋转。额外的部分是比率A / B，即转向镜之间的距离除以从反光镜2到枢轴的距离。

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