Opt Lett. 2022 Nov 1;47(21):5712-5714. doi: 10.1364/OL.469118.
A 2D scan generated from two single-axis scanning mirrors often has the beam steered about two distant axes that lead to scan artifacts, such as displacement jitters, telecentric errors, and spot variations. Previously, this problem has been addressed with complicated optical and mechanical designs, such as 4f relays and gimbaled mechanics, which ultimately limit the performance of the system. Here, we show that two single-axis scanners alone can produce a 2D scanning pattern nearly identical to a single-pivot gimbaled scanner through an apparently previously undiscovered simple geometry. This finding broadens the design parameter space of beam steering applications.
从两个单轴扫描反射镜生成的 2D 扫描通常会使光束转向两个不同的轴，从而导致扫描伪影，例如位移抖动、远心误差和光斑变化。以前，这个问题是通过复杂的光学和机械设计来解决的，例如 4f 继电器和万向架机构，这最终限制了系统的性能。在这里，我们展示了两个单轴扫描器本身可以通过一个明显以前未被发现的简单几何形状产生几乎与单枢轴万向架扫描器相同的 2D 扫描图案。这一发现拓宽了光束转向应用的设计参数空间。
